JP2005006064A - Center device, mobile device, and information collection system - Google Patents

Abstract

Collecting request information generation for generating collection request information including request information for collecting information and district information indicating the district to collect. Information (information generating unit 417 and information editing unit 416), information transmitting unit 419 for wirelessly transmitting the generated collection request information, information collected as response information to the collection request information, and a position where the collected information is detected The communication unit 413 and the information receiving unit 412 that input the detected position information by either one of the predetermined network 230 and wireless, and the area including the position indicated by the collection area information of the input response information are obtained, and the response An information processing unit 421 that generates the content information using the collected information and associates the generated content information with the district information. I was painting.
[Selection] Figure 5

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to collection of original information for generating predetermined content information using a quasi-zenith satellite or the like.
[0002]
[Prior art]
Regarding data collection systems from mobile devices, there are dynamic management systems such as taxis and trucks. Also provided by the “Road Traffic Information Communication System Center” as an example of a system that collects predetermined information and generates predetermined content information based on the collected information and provides the generated content information. There is a “Road Traffic Information System (VICS)”.
As a method for collecting information in a dynamic management system such as a taxi or a truck, there is a method in which a mobile device autonomously notifies the center of information. In this system, since transmission is performed at regular intervals or every occurrence of an event, traffic is enormous. In addition, communication charges are in proportion to the increase in traffic. Furthermore, it is conceivable that the information to be collected is transmitted separately at different timings, and simultaneity cannot be ensured for the information to be collected.
As another information collection method, there is a polling method for calling the mobile device from the center side. In this system, a call is individually made to the mobile device from the center side.
According to the website of “VICS” provided by “Road Traffic Information Communication System Center”, “Road Traffic Information System (VICS)”
1. Systematically collect road traffic information
2. Process and edit the collected information
3. Transmit the processed information to the in-vehicle device
4). Users use information using onboard devices
It has the above four functions. Above 1. As for “collecting road traffic information systematically”, the VICS Center receives information from prefectural police and road managers, and creates traffic jam information, for example, based on the received information. The above information from the prefectural police and the road manager is mainly information on the main road. The traffic jam information indicates the degree of congestion in three stages. In addition, transmission of information to the in-vehicle device is transmitted from a beacon installed on a highway or a main trunk road, or is transmitted using FM multiplex broadcasting.
[0003]
[Non-Patent Document 1]
"VICS" homepage provided by "Road Traffic Information Communication System Center", [Search May 26, 2003], Internet <URL: http: // www. vics. or. jp />
[0004]
[Problems to be solved by the invention]
In the system in which the mobile device autonomously notifies the center of information, transmission is performed at regular intervals or every occurrence of an event, so traffic is enormous. In addition, communication charges are in proportion to the increase in traffic. Furthermore, it is conceivable that the information to be collected is transmitted separately at different timings, and it is difficult to ensure simultaneity for the information to be collected.
In addition, there is a polling method as a method for the mobile device to notify the center of information. In this method, since the mobile device is individually called from the center side, when the same instruction is given to a plurality of mobile devices, a request corresponding to the number of mobile devices is made and the mobile device is moved. Since it is necessary to obtain a response corresponding to the number of body devices, it is difficult to realize a large-scale system having a large number of mobile devices. In addition, the timing at which each mobile device receives a request shifts.
Also, if information on main roads is collected and traffic congestion information is generated, for example, the congestion status of roads other than main roads cannot be confirmed. In addition, when traffic congestion information is transmitted to a user, there are areas that are not covered by beacons and FM multiplex broadcasting, and the user may not be provided with information.
[0005]
Therefore, the present invention has the following objects.
When requesting the collection of information, it is performed for a plurality of mobile devices simultaneously and for a large number of mobile devices.
Eliminate traffic when requesting information collection.
Ensure response concurrency.
Eliminate response traffic.
[0006]
[Means for Solving the Problems]
The center device according to the present invention collects original information for generating content information, and generates content information using the collected original information.
A collection request information generating unit for generating collection request information including request information for collecting the original information and district information indicating a target district for collecting the original information;
A wireless transmission unit that wirelessly transmits the collection request information generated by the collection request information generation unit to a predetermined district including the target district;
A communication unit that receives response information including original information with respect to the collection request information transmitted from the wireless transmission unit;
A content information generating unit that generates the content information using original information of the response information received by the communication unit, and stores the generated content information as content information of a target district indicated by the district information;
It is provided with.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an image of the entire information collection system according to the first embodiment.
The center device 400 transmits collection request information including district information corresponding to each district and request information for requesting collection of predetermined information. The district information divides a predetermined area into a plurality of districts (for example, district A, district B, district C, etc.), and identifies each divided district. The collection request information is a request for collecting the information indicated by the request information from the mobile device 300 in the district corresponding to the district information. In FIG. 1, A district information, B district information, and C district information are shown as an example.
The quasi-zenith satellite 220 relays the collection request information transmitted from the center device 400 to a large number of vehicles equipped with mobile devices (S1, request).
The mobile device 300 receives the collection request information from the center device relayed by the quasi-zenith satellite 220. When the district information in the collection request information matches the district where the user exists (for example, any of district A, district B, or district C), the information requested to be collected by the request information is mounted on the vehicle. Response information for the collection request information is generated by acquiring from a sensor or by directly inputting information from a driver or the like. The generated response information is transmitted to the center apparatus 400 via the network 230 (S2, response, S3, collection).
The center device 400 generates content information (for example, traffic jam information) based on the response information received from the mobile device. The generated content information is provided to the customer connected as the information use side 240 via the network 231 (S4, information provision). By using the quasi-zenith satellite 220, it is possible to transmit the collection request information to a vehicle equipped with a mobile device in a place where radio waves are difficult to reach such as in a mountainous area or behind a building. it can. Further, the mobile device can receive the collection request information even in a place where radio waves are difficult to reach.
[0008]
FIG. 2 is a diagram illustrating an example of a configuration of the information collection system according to the first embodiment.
The information collection system includes a center device 400, a mobile device 300 (here, the mobile device 300 is mounted on a vehicle), a GPS (Global Positioning System) satellite 210, and a quasi-zenith satellite 220. Center device 400 connects mobile device 300 via network 230. The network 230 is a wireless network such as a mobile phone network. Furthermore, the center device 400 provides an information providing terminal 240A, an information providing terminal 240B,..., An information providing terminal 240N as an example of the information use side 240 that provides content information. The information providing terminal 240 ”) and the network 231.
The network 231 may be wired or wireless. Also, the type of communication network such as a public line, a dedicated line, the Internet, and a LAN (Local Area Network) is not limited.
As a specific example of the information use side 240, for example, a public institution center or a company center that uses traffic information and weather information can be considered. In addition, a personal computer in a private home can be considered.
[0009]
Here, the quasi-zenith satellite 220 will be described.
FIG. 3 is a diagram showing a technology related to the quasi-zenith satellite planned in the future.
In FIG. 3, the quasi-zenith satellite 220, as an example, orbits the surface of 35800 km above the ground so as to have an inclination angle of about 45 degrees from the equatorial plane in accordance with the rotation of the earth once a day. As an example, three quasi-zenith satellites 220 are arranged so as to be 120 degrees apart at the ascending intersection eclipse (intersection with the equatorial plane).
FIG. 4 is a diagram showing a technology related to a quasi-zenith satellite planned in the future.
FIG. 4 shows the locus of the quasi-zenith satellite 220 in FIG. 3 when the ground is fixed. As shown in FIG. 4, the quasi-zenith satellite 220 orbits so as to draw a “figure 8” having an intersection in the south of Japan. The three quasi-zenith satellites 220 are located above Japan without a break so that the orbital planes are different but change every 8 hours. Further, when considering the region in Japan, there will always be a quasi-zenith satellite 220 with an elevation angle of 70 degrees or more. Because it is located above Japan without a break, there is always a quasi-zenith satellite 220 with an elevation angle of 70 degrees or more, and when the receiver receives radio waves from the quasi-zenith satellite 220 on the ground, the radio waves can be blocked even in the valleys of the building. There is no.
[0010]
Therefore, the information collection system realizes that collection request information from the center device 400 can be transmitted to the mobile device 300 in a wide area by using the advantage of the quasi-zenith satellite 220 described above. Furthermore, it is possible to realize that the collection request information is received by the mobile device 300 with a high probability even in a place where radio waves are difficult to reach.
In addition, a quasi-zenith satellite is used to improve the position accuracy (in cm) and shorten the position calculation time (several seconds or less). A quasi-zenith satellite is used as one of the GPS satellites, and a high-precision positioning function is realized in combination with a ground electronic reference point.
In the following description, the district identifier is an identifier assigned to each of a plurality of divided districts by dividing a predetermined region (for example, a range in which the collection request information can be received) into a plurality of regions. A predetermined district is identified by the district identifier.
The district information is information related to the district specified by the district identifier, and can be searched by the district identifier.
[0011]
FIG. 5 is a diagram illustrating an example of the configuration of the center apparatus 400.
The antenna 411 transmits the collection request information via the quasi-zenith satellite 220. Also, response information from the mobile device 300 is received via the quasi-zenith satellite 220.
The information reception unit 412 receives response information received by the antenna 411 and outputs the response information to the information collection unit 414. The information receiving unit 412 is an example of a communication unit when wirelessly receiving response information from the mobile device 300.
The communication unit 413 receives response information from the mobile device 300 via the network 230. In addition, the communication unit 413 transmits predetermined content information generated by the center device 400 to the mobile device 300. Information received by the communication unit 413 from the mobile device 300 is output to the information collection unit 414. Communication unit 413 is an example of a communication unit when response information from mobile device 300 is received via network 230.
[0012]
The information collection unit 414 receives the response information received by the communication unit 413 and the information reception unit 412 and stores the response information in the collection information memory 415. For example, the information collection unit 414 stores, in the collection information memory 415, values obtained by collecting the input response information for each collection item for each collection date and time for each district.
The collection information memory 415 stores response information output from the information collection unit 414. Stored information can be searched by district information, collection date and time, and collection items.
[0013]
The information editing unit 416 generates item information indicating items of information to be collected from the mobile device 300, generates district information that specifies the districts from which the information is collected, and edits the district information to correspond to the item information. Do.
The item information and the district information generated by the information editing unit 416 may be specified in advance from the provision destination of the content information generated by the center device 400, or may be specified uniquely by the center device 400. In addition, the contents to be specified can be changed depending on the date, day of the week, or time. In addition, it is possible to make a spot designation in the event of a disaster.
[0014]
The information generation unit 417 adds response request instruction information indicating that the collection request information is a request for a response from the reception side to the collection request information edited by the information editing unit 416. The response request instruction information is, for example, a response request command. In addition to transmitting the collection request information to the mobile device 300, the center device 400 may transmit notification information for the purpose of notifying the mobile device 300. For this reason, response request instruction information is added in order for the mobile device 300 to distinguish between information intended for requesting a response and information intended for notification. If the information is intended for notification, the notification instruction information is added to the information to be notified.
The information editing unit 416 and the information generation unit 417 constitute a collection request information generation unit.
The transmission information memory 418 stores the collection request information generated by the information generation unit 417.
The transmission information memory 418 can be realized by using a ring-type file as an example. There are two pointers (write pointer and read pointer) as header information. At the time of writing, the transmission information memory 418 writes the collection request information to be transmitted from the address of the write pointer, and updates the write pointer to the address to be written next. The information transmission unit 419 described later reads the collection request information from the read pointer at the time of reading, and updates the read pointer to an address for starting the next reading. This is achieved by such a mechanism.
The information transmission unit 419 (an example of a wireless transmission unit) extracts the collection request information stored in the transmission information memory 418 and transmits it. When transmitting, collection request information for a plurality of districts is transmitted at the same frequency. Alternatively, when it is necessary to repeatedly transmit the same collection request information, the collection request information is repeatedly transmitted periodically at the same frequency. Further, different frequencies are assigned to the collection request information for a plurality of districts and transmitted in a multi-channel configuration. Also, collection request information for a plurality of districts is set and transmitted in one frame.
[0015]
The input unit 426 inputs information necessary for generating content information via the network 231 from the information use side 240 that uses the content information. As information necessary for generating content information, for example, an item of information to be collected, a district to be collected, a condition to be collected, a collection timing, a type of content to be created, and the like are input. For example, if the information use side 240 wants to provide content information of 24-hour traffic jam information on weekdays in the A district and B district, the collected information item is “speed value”, and the collected district is “A district” And B area ”, the collecting condition is“ speed value <20 km ”, the collecting timing is“ Monday to Friday from 0:00 to 11:59 every 5 minutes ”, and the type of content to be created is“ congestion information ” Become.
Alternatively, the input unit 426 inputs information necessary for creating content information for each type of content information provided uniquely by the center apparatus 400. The input information is stored in the customer information storage unit 427. For example, the types of content information provided by the center device 400 are (1) 24-hour traffic information of A district information, (2) 24-hour traffic information of B district information, and (3) 6, 7 of A district information. Suppose that it is the rainfall information of the moon for 24 hours. In the above case, the information necessary for generating each piece of content information is as follows.
(1) The item of information to be collected is “speed value”, the district to be collected is “A district”, the condition to be collected is “speed value <20 km”, the collection timing is “every day 24 hours 5 minutes”, and the content to be created The type of traffic information.
(2) Information items to be collected are “speed value”, the district to be collected is “B district”, the condition to be collected is “speed value <20 km”, the collection timing is “every day 24 hours 5 minutes”, the content to be created The type of traffic information.
(3) The item of information to be collected is “wiper speed value”, the area to be collected is “A district”, the condition to collect is “wiper speed value> 0”, and the timing to collect is “June 1 to July 31” “Every 24 hours and 5 minutes every day”, and the type of content to be created is “rainfall information”.
The input unit 426 stores the input information in the customer information storage unit 427.
The customer information storage unit 427 stores information necessary for generating the content input by the input unit 426 for each customer. The customer is the information use side 240, and the information use side 240 is a customer when viewed from the center device 400. Alternatively, it is stored for each type of content information to be generated.
The information editing unit 416 creates request information with reference to the information stored in the customer information storage unit 427.
The information processing unit 421 (an example of a content information generation unit) generates content information using the response information stored in the collected information memory 415. For example, when the type of content information is traffic jam information for the A district, the speed value for the A district is acquired from the collected information memory 415 and processed. The processing characteristics will be described later, but basically, a conventional processing method is used. Further, the type, district, and generation timing of the content information to be generated are acquired from the customer information storage unit 427. The generated content information is stored in the processing information memory 423.
The processing information memory 423 stores content information for each type of content and for each customer. Therefore, the information processing unit 421 stores the generated content information in the processing information memory 423 for each type of content and for each customer.
The output unit 424 (an example of the content providing unit) uses the network 231 for each customer based on the content information stored in the processing information memory 423 based on the information for each customer stored in the customer information storage unit 427. Provide (send) via
The correspondence relationship storage unit 422 is a table that associates a district identifier with a predetermined place (point). The district identifier is an example of district information.
FIG. 6 is a diagram illustrating an example of the correspondence relationship storage unit 422. The correspondence relationship storage unit 422 shown in FIG. 6 shows an example of storing the latitude range and longitude range corresponding to the district identifier. For a given district identifier, the numerical value stored in the latitude item “Y or higher” is Y1, the numerical value stored in “less than Y” is Y2, and the numerical value stored in the longitude item “Z or higher”. Is Z1, and the numerical value stored in “less than Z” is Z2, the predetermined area identifier has a latitude of Y1 or more and less than Y2 and a point having a longitude of Z1 or more and less than Z2 in the area of the above-mentioned area identifier. It means that it is divided.
When the information editing unit 416 generates district information, the original information to be generated is designated by (latitude Y, longitude Z) or directly by a district identifier. When specified by (latitude Y, longitude Z), the correspondence storage unit 422 is referred to obtain a district identifier corresponding to (latitude Y, longitude Z) and set as district information. When a direct district identifier is designated, the designated district identifier is used as district information. The mobile device 300 includes a correspondence relationship storage unit 326 that stores information having the same contents as the correspondence relationship storage unit 422. By having the same contents, the area indicated by (latitude Y, longitude Z) corresponding to the district identifier is unified.
Further, when the district information stored in the collected information memory 415 is a district identifier, the information processing unit 421 acquires (latitude Y, longitude Z) corresponding to the district identifier from the correspondence storage unit 422. Alternatively, by providing the information use side 240 with a storage unit having the same content as the correspondence storage unit 422 in advance, the information processing unit 421 receives the content information without converting the district identifier. In 240, the district identifier may be converted.
The map information storage unit 425 stores map information similar to or more detailed than the map information used in the conventional navigation device or the like.
[0016]
FIG. 7 is a diagram illustrating an example of the collection request information transmitted from the center apparatus 400.
7A shows a frame of the collection request information, FIG. 7B shows an example of the configuration of the data area 120A of one frame, and FIG. 7C shows a plurality of district information as one cycle. A case where information of a plurality of cycles is transmitted as collection request information is shown.
The collection request information 100 has one frame from the beginning of one header area to the beginning of the next header area. One frame includes a header area 110A and a data area 120A. In FIG. 7A, a plurality of frames are shown, and alphabets (A, B, C... X) are attached to the codes to distinguish each of the plurality of frames. However, when there is no need to distinguish between them, they are described as a header area 110 and a data area 120. Similarly, the reference numerals used in FIG. 7B may be omitted as well.
[0017]
The header area 110 sets frame management information and the like (for example, including the size of the data area 120). The data area 120 sets the content of data to be transmitted. The data area 120 includes a district identifier 121A, which is an example of district information, and request content information 122A. The request content information 122A sets the content of information collected from the mobile device 300 in the district indicated by the district identifier 121A.
Here, as an example, the collection request information has a format in which district information of each of a plurality of districts is arranged in order to create one cycle, and one cycle is repeatedly broadcast. FIG. 7C shows one cycle composed of the district A, the district B, the district C,..., The district X, and shows a state where one cycle is repeated in the broadcast signal.
[0018]
Here, the collection request information relayed by the quasi-zenith satellite 220 will be described with reference to FIG. FIG. 8 is a diagram illustrating an example of relaying different beam collection request information for each of the divided areas. The quasi-zenith satellite 220 includes an antenna corresponding to the number of beams. The quasi-zenith satellite 220 receives the collection request information transmitted from the center apparatus 400 using the antenna corresponding to each region, and irradiates the collection request information for each region. In this way, the quasi-zenith satellite 220 relays the collection request information transmitted from the center apparatus 400.
FIG. 8 shows an example in which the region of Japan is divided into N regions and beam collection request information corresponding to each region is relayed. In each area, it is possible to receive beam collection request information corresponding to the area.
[0019]
Next, the operation of the center apparatus 400 will be described using FIG. 5 and FIG.
FIG. 9 is a flowchart showing an example of the operation of the center apparatus 400.
FIG. 9A shows the operation of the collection request information transmission process for generating and transmitting the collection request information, and FIG. 9B shows the response information for the transmitted collection request information and receiving predetermined content information. The operation of content information generation processing to be generated is shown. It is assumed that the collection request information transmission process and the content information generation process can be performed in the center apparatus 400 in parallel. The timing at which the collection request information transmission processing operates is triggered when the collection request information is generated regularly and at a predetermined timing (for example, when the content information of traffic jam information is generated, the occurrence of an accident is triggered). In addition, when generating the content information of the rainfall information, it is performed for the area included in the range triggered by entering the range affected by the typhoon.), And the collection request information is generated. The collection request information transmission process transmits the collection request information at a predetermined timing. Prior to the description of the operation, an example of the contents stored in the customer information storage unit 427 will be described with reference to FIG.
The customer information storage unit 427 in FIG. 10 stores collection information and distribution information related to content information for each customer. In “general” of “customer”, collection information and distribution information for content information uniquely generated by the center apparatus 400 are set instead of generating content information in response to a request from a customer. The “collection information” includes “district”, “collection date / time”, “collection item”, and “collection condition”. “Distribution information” includes “district”, “distribution date / time”, and “distribution item”. In the collection request information transmission process, collection request information is generated based on “district”, “collection item”, and “collection condition” of “collection information”, and the collection request information is transmitted based on “collection date”. In the content information generation process, content information is generated based on “district”, “delivery date”, and “delivery item” of “distribution information”, and content information is generated based on “delivery date” and “delivery item”. Deliver.
[0020]
In the collection request information transmission process of FIG. 9A, the information editing unit 416 has arrived at the timing of creating the collection request information by confirming the “collection date” of the “collection information” from the customer information storage unit 427. A thing is selected (S31). For example, compare today's date and current time with “collection date” and select “collection date” that matches today ’s date and “collection date” is later than the current time. . In addition, since the “collection date / time” is set to “24 hours” or “17:00 to 22:00” and the time zone is set, the collection request information created once can be used. When selecting in S31, control is performed so as not to select redundantly. When the control is not performed, it is determined whether or not the current time is included in the time zone set in the “collection date and time”.
When the selection from the customer information storage unit 427 is completed, the information editing unit 416 converts the information set in the “district” into a district identifier corresponding to the district information. Further, item information indicating items to be collected and condition information for collection are generated based on the information set in the “collection conditions” (S32). If “district identifier” is set in advance in “district” as in “district A” as shown in FIG. 10, no conversion is necessary. When “latitude and longitude” is set in “district”, the correspondence storage unit 422 shown as an example in FIG. 6 is referred to and converted into a corresponding district identifier from “latitude and longitude”. The district identifier, item information, and condition information are edited in a format that can be understood on the mobile device 300 side. The information editing unit 416 outputs the edited district identifier, item information, and condition information to the information generation unit 417.
The information generation unit 417 inputs the district identifier, item information, and condition information, and adds response request instruction information indicating that a response is requested for the input information. Item information, condition information, and response request instruction information correspond to the request content information 122. When request content information is generated, header information is generated (S33). The generated request content information, district identifier, and header information are stored in the transmission information memory 418 as collection request information (S34).
[0021]
FIG. 11 is a diagram illustrating an example of the transmission information memory 418. In the example of FIG. 11, the collection request information is generated when the time period is set in the “collection date and time” in the above-described processing of S31 and the current time is included in the set time period. 4 shows an example of a memory that stores the generated collection request information. The transmission information memory 418 is composed of management information and transmission information. The management information includes a pointer that identifies an address and transmission order information that specifies the transmission order of collection request information to be transmitted. The pointer indicates the address of transmission information to be read next and the address of transmission information to be written next. As the initial value of the pointer, the head address of the transmission information is set. The transmission information includes a plurality of collection request information including header information, a district identifier, and request content information. The transmission order information is used, for example, when an accident occurs and a traffic jam is immediately confirmed, or when a rainfall is quickly confirmed by the approach of a typhoon. That is, in the transmission order information, the district identifier of the district where information is to be collected immediately is set, and the priority for transmitting the collection request information of the set district identifier is increased. For this reason, the transmission order information is not set particularly when there is no need to immediately confirm information on a predetermined area. If there is no transmission order information setting, the collection request information is extracted from the address of the pointer to be read next.
In addition, when the collection request information is generated earlier than the transmission timing of the collection request information (for example, when the collection request information is generated the day before transmission), the transmission timing is set before the header information. The transmission timing information shown is added. The transmission timing information is generated by the information editing unit 416 based on the “transmission date / time” in the customer information storage unit 427 in the process of S31. The generated transmission timing information is input to the information generation unit 417 and stored in the transmission information memory 418 together with the header information, the district identifier, and the request content information. At this time, since the read pointer designates the address to be read next, it is required that the transmission information memory 418 be stored in the order of the timing indicated by the transmission timing information. As described above, various file configurations can be considered for the file configuration of the transmission information memory 418. For this reason, the file structure of the transmission information memory 418 shown in FIG. 12 is an example, and is not limited to the structure shown in FIG.
[0022]
The information transmission unit 419 extracts the collection request information from the transmission information memory 418, converts the collection request information into the format shown in FIG. 7A, and wirelessly transmits the converted collection request information 100 via the antenna 411. . For example, “header information A, district information A, request content information A” in FIG. 11 is set in the header area 110A and data area 120A in FIG. 7, and “header information B, district information B, request content information B” is shown in FIG. 7 is set in the header area 110B and the data area 120B, and "header information C, district information C, request content information C" is set in the header area 110C and the data area 120C in FIG.
[0023]
An example of the collection request information having a data format different from the data format of the collection request information 100 shown in FIG. 7 is shown in FIG. FIG. 12A shows an example in which the request information having the same district identifier is included in one frame, and only the information notification to the mobile device 300 is set in the same frame. The data area 120A has one district identifier 121A, and a plurality of request information is set for each customer following the response request instruction information. The request information for customer A to the request information for customer D correspond to one district identifier 121A. Subsequently, information for only notification is set in the order of “traffic information”, “weather information”, and “location information” behind the notification instruction information. The “traffic information”, “weather information”, and “location information” also correspond to one district identifier 121A. In this way, it is also possible to set notification information for performing notification only together with request information for requesting a response to the mobile device 300 in the same frame.
In addition, request information and notification information for the same district can be set and collected in one frame.
FIG. 12B shows an example in which request information having the same district identifier is set in one frame.
FIG. 12C is an example for transmitting notification information toward a district corresponding to one district identifier. Although the data areas 120A to 120X have different sizes, the frames having different sizes can be connected to each other as shown in FIG. The length of each frame is set in the header area 110 attached to the head of each frame. For this reason, the length of each frame may be different.
When request information corresponding to the same district identifier is combined into one frame as shown in FIGS. 12A and 12B, the file format of the transmission information memory 418 is changed to a format different from that shown in FIG. There is a need to. Here, a description of a specific file format is omitted.
[0024]
As described above, the collection request information generated by the center device 400 is set for a plurality of request information for the same district identifier in one frame of the collection request information transmitted by the information transmission unit 419, or for each different district identifier. One or a plurality of pieces of request information can be set. Further, the present invention is characterized in that request information for requesting a response to one frame and notification information for notification can be set together.
[0025]
Since the information transmission unit 419 performs wireless transmission for each frame, the collection request information is broadcast to the mobile device 300 in the district corresponding to one or more district identifiers set in one frame. The Therefore, the mobile device 300 can receive the collection request information at the same timing, that is, simultaneously with other mobile devices. As a result, there is an effect that the center device 400 can ensure simultaneity in the response information transmitted from the mobile device 300.
[0026]
Further, since the collection request information is transmitted by designating the district, there is an effect that the traffic in transmission can be eliminated as compared with the case where the collection request information is individually transmitted to the plurality of mobile devices 300.
[0027]
Further, since it is possible to limit the response to only those satisfying the conditions by setting the condition information in the collection request information, the collection information can be narrowed down, and the response information traffic transmitted from the mobile device 300 can be reduced. There is an effect that can be eliminated.
[0028]
Next, content information generation processing for receiving response information and generating content information will be described.
FIG. 9B is a flowchart of the content information generation process.
In FIG. 9, the communication unit 413 receives response information for the collection request information from the mobile device 300 via the network 230 (S36). Here, the information receiving unit 412 may receive the response information. The communication part 413 receives via the network 230 which is a mobile telephone network. On the other hand, the information receiving unit 412 receives response information relayed to the quasi-zenith satellite 220 via the antenna 411. The communication unit 413 outputs the received response information to the information collection unit 414, and the information collection unit 414 stores the response information in the collection information memory 415 (S37). Here, an example of the format of the response information and an example of the format of the response information stored in the collected information memory 415 will be described.
FIG. 13 is a diagram illustrating an example of a format of response information. In FIG. 13A, the response information 130 includes header information 131, a district identifier 133 as position confirmation information for confirming a position where the mobile device that is the transmission source of the response information has transmitted the response information, and the center apparatus 400. The collection information 134 on the mobile device 300 side required by the mobile device 300. The position confirmation information may be position information indicating the position of the mobile device. Details of the collection information 134 are shown in FIG. According to FIG. 13B, the collection information 134 includes collection item information 134A indicating what information the mobile device 300 has collected, collection value information 134B that is a collected value, and a mobile device that is a transmission source. Sender information 134C specifying 300, sender location information 134D indicating the location of the mobile device 300, and transmission date information 134E indicating the transmission start date and time. The sender location information 134D is set when the location confirmation information set in the district identifier 133 is a district identifier, and is set when the location confirmation information set in the district identifier 133 is location information of a transmission source. Shall not be performed. Further, since necessary information varies depending on the type and content of the content information to be generated, the information included in the response information is not limited to that shown in FIG.
[0029]
FIG. 14 is a diagram illustrating an example of response information stored in the collected information memory 415. In FIG. 14, the collection information memory 415 stores “collection item”, “collection place”, “sender”, and “sender location” by collection date and time for each district. Regarding the correspondence with the information included in the response information, the “district” stores the district identifier determined by the position determination information set in the district identifier 133. When the district identifier set in the district identifier 133 is set as it is, and when the district identifier determined by referring to the correspondence storage unit 422 based on the location information of the transmission source set in the district identifier 133 is set. There is. “Collecting date / time” sets transmission date / time information 134E. The collection item information 134A is set in the “collection item”. Collected value information 134B is set in “collected value”. In the “sender”, sender information 134C is set. The “sender location” includes the case where the sender location information 134D is set and the case where the information set in the district identifier 133 is set. Since the collection information memory 415 stores information used when collecting the content information, it is desirable that the collection information memory 415 has a format that can easily generate the content information. The format of the collection information memory 415 shown as an example in FIG. 14 is not limited to this.
[0030]
In S38, the information processing unit 421 refers to the customer information storage unit 427, determines the type of content information to be generated, and collects original information necessary for generating the determined type of content information from the collection information memory 415. get. For example, when the type of content information indicates a traffic jam situation, a collected value whose “collection item” is “speed” is acquired as original information from FIG. Since the content information is generated for each district, the customer information storage unit 427 also acquires information for determining which district the content information is to be generated. The customer information storage unit 427 in FIG. 10 has “distribution information”, and this distribution information is information necessary for generating content information. The type of content information can be determined with reference to “delivery item”.
Further, the determination of the district in which the content information is generated can be determined with reference to “district”.
Other types of content information include rain conditions. When generating the content information of the rainfall situation, a collection value whose “collection item” is “wiper” is acquired from the collection information memory 415. The “wiper” is a value indicating the operation state of the vehicle wiper. When the value is “strong”, it is considered that there is a large amount of precipitation per unit time. For example, in the case of “strong”, the content information is processed by setting the precipitation amount to 50 mm / hour. The above is the content information processing S38. The information processing unit 421 stores the processed content information in the processing information memory 423 (S39). An example of the format of information stored in the machining information memory 423 is shown in FIG. In FIG. 15, the content information is stored in the “detailed provision information” in the processing information memory 423 by “date and time” by “district” by “provided information item” which is the type of content information. The content of the information stored in the processing information memory 423 varies depending on the content information required by the customer. Further, it differs depending on the content information provided uniquely by the center apparatus 400. Further, it differs depending on how the center apparatus 400 provides the information using side 240. For this reason, the content of the processing information memory 423 shown as an example in FIG. 15 is not limited to this.
The output unit 424 extracts the content information from the processing information memory 423 at a predetermined timing, and provides the content information to the information using side 240 via the network 231 (S40). At this time, the output unit 424 refers to the customer information storage unit 427 to confirm which content information is required by which customer at which timing, and automatically obtains the content information according to the timing required for each customer. To provide. Alternatively, when information requesting provision of content information from a customer is input (input is performed by the input unit 426), the requested content information is extracted from the processing information memory 423 and provided. It doesn't matter. Further, the processing information memory 423 may be provided as a database to an environment accessible from the Internet so that the content information can be accessed anytime and anywhere as long as the environment can be connected to the Internet.
Further, the communication unit 413 may acquire content information from the processing information memory 423 and provide the acquired content information to the mobile device 300 via the network 230. At this time, for example, the “sender” of the response information stored in the collected information memory 415 is used as the destination for identifying the mobile device 300 that transmits the content information.
In addition, the information transmission unit 419 or the information editing unit 416 acquires content information with reference to the processing information memory 423, and obtains the content information from the information transmission unit 419 via the antenna 411 as notification information at the timing of transmitting the collection request information. You may transmit by radio. By transmitting from the information transmission unit 419, it is possible to perform broadcast transmission without designating each mobile device 300 in the target area.
[0031]
The response information received from the mobile device 300 by the center device 400 is ensured to be synchronized. For this reason, the content information to be generated is content information with high simultaneity. Conventionally, responses from mobile devices have been transmitted separately for each mobile device, so the simultaneity is low, and content information generated using response information with low simultaneity is content information with low simultaneity. It was. However, by using the center device of this embodiment, there is an effect that it is possible to generate content information having higher simultaneity than the conventional one.
Further, since customer information for instructing information necessary for generating content information is input from the user side who provides the content information, the content information to be provided can be truly desired by the customer. In addition, since content information for customers can be provided, high-quality services can be provided for each customer.
[0032]
Embodiment 2. FIG.
In Embodiment 2, the mobile device 300 will be described.
FIG. 16 is a diagram illustrating an example of the configuration of the mobile device 300.
The antenna 311 is installed outside the mobile device 300 and receives a GPS signal emitted from the GPS satellite 210.
The GPS signal receiving unit 312 receives the GPS signal received by the antenna 311.
The position measurement unit 313 calculates position information for specifying the position of the mobile device 300 using the GPS signal received by the GPS signal reception unit 312. Detailed calculation of the position information is omitted here. Further, in calculating the position information, a correction signal is used in order to acquire position information with high accuracy. However, description of this point is also omitted. Note that the accuracy of the position information can be improved by receiving the GPS signal and the correction signal via the quasi-zenith satellite 220.
[0033]
The antenna 321 is installed outside the mobile device 300 and receives the collection request information relayed by the center device 400 and relayed by the quasi-zenith satellite 220.
The wireless reception unit 322 inputs the collection request information received by the antenna 321.
The information selection unit 323 (an example of a district comparison unit) receives the collection request information received by the wireless reception unit 322, selects information using the district identifier included in the collection request information, and also includes response request instruction information and notification instruction. Information is selected depending on which information is included in the collection request information.
When the information selected by the information selection unit 323 needs to be displayed to the user of the mobile device 300, the output unit 324 outputs the information to the display device 325.
The map information storage unit 350 stores map information as used in the car navigation system. When the information selected by the information selection unit 323 needs to be mapped and displayed on the map information, the output unit 324 acquires the map information to be mapped from the map information storage unit 350, and information is obtained from the acquired map information. The information selected by the selection unit 323 is mapped and output to the display device 325.
[0034]
The display device 325 (an example of a display unit) is a device that displays information output by the output unit 324. As an example of the display device 325, any device that can display information (still images, moving images, text information, image information, etc.) such as a monitor and a liquid crystal screen may be used.
The correspondence relationship storage unit 326 is the same as the correspondence relationship storage unit 422 included in the center device 400 of FIG.
[0035]
The district determination unit 327 receives position information including latitude and longitude from the position measurement unit 313 and determines a district identifier corresponding to the input position information using the correspondence storage unit 326.
The sensor device 344 is installed outside the mobile device 300, and detects the speed of the vehicle on which the mobile device 300 is mounted, for example, by the speed sensor 345, or detects the operation state of the wiper of the vehicle by the wiper sensor 346. Alternatively, the light sensor 347 detects the light intensity of the vehicle light. The type of sensor differs depending on what the mobile device 300 is mounted on. Another sensor may be provided.
The detection device 340 (an example of a detection unit) inputs a sensor value from the sensor device 344. It is assumed that the sensor value is repeatedly input at a constant cycle. The speed detector 341 receives a speed sensor value from the speed sensor 345. The wiper detector 342 receives the wiper sensor value from the wiper sensor 346. The light detector 343 receives the light sensor value from the light sensor 347.
The input unit 328 receives an instruction from the condition determination unit 351, inputs a sensor value instructed from the detection device 340, and outputs the sensor value to the condition determination unit 351.
When the information selection unit 323 includes the response request instruction information in the collection request information, the condition determination unit 351 inputs the sensor value from the detection device 340 for the item information included in the request content information of the collection request information. To the input unit 328. When the sensor value is output from the input unit 328, the sensor value is input and output to the response information generation unit 352. At this time, if the condition information is set in the request content information, the input sensor value is compared with the condition set in the condition information, and the sensor value is returned to the response information generation unit only when the sensor value satisfies the condition. Output to 352.
The response information generation unit 352 generates response information using the sensor value, and outputs the response information to the communication unit 353. Here, the response information 130 of FIG. 13 is generated as the response information to be generated. It is assumed that the content of the response information is determined by the type and content of the content information generated by the center device 400.
The input device 329 (an example of an item response unit) is a device for a user to input information. For example, the device can transmit information input by the user to the input unit 328, such as a keyboard, keys such as a numeric keypad, and a mouse. I just need it.
The communication unit 353 transmits the response information via the network 230. Further, content information is input from the center device via the network 230.
The response signal transmission unit 354 receives response information from the response information generation unit 352 and wirelessly transmits the response information via the antenna 321.
[0036]
Next, the operation will be described.
First, the operation of the mobile device 300 will be described with reference to FIGS. 16 and 17.
FIG. 17 is a flowchart showing an example of the operation of the mobile device 300.
When the mobile device 300 is turned on (not shown in FIG. 16), the wireless reception unit 322 starts receiving the collection request information emitted from the quasi-zenith satellite 220 (in FIG. 17). Not shown). In addition, the positioning of its own position is started. That is, the GPS signal receiving unit 312 receives a GPS signal from the GPS satellite 210 via the antenna 311 (S11). The position positioning unit 313 performs positioning using the GPS signal received by the GPS signal receiving unit 312 and acquires its own position information (S12). Here, detailed description of positioning is omitted.
The position positioning unit 313 outputs the acquired position information to the district determination unit 327 (S13).
[0037]
The district determination unit 327 acquires the district identifier including the location information using the input location information with reference to the correspondence relationship storage unit 326 (S14). Since the position information includes latitude information and longitude information, the district identifier can be acquired from the correspondence storage unit 326 using the latitude information and longitude information. The acquired district identifier is output to the information selection unit 323. The collection request information received by the wireless reception unit 322 via the antenna 321 is output to the information selection unit 323. The information selection unit 323 periodically confirms reception of the collection request information (S15). The information selection unit 323 determines whether or not the district identifier of the collection request information matches the district identifier input from the district determination unit 327 (S16). If they do not match, the collection request information is discarded. If they match, it is further confirmed whether response request instruction information or notification instruction information is set in the collection request information (S17). If response request instruction information is set, response information generation processing is performed. If notification instruction information is set, processing for displaying the notification information is performed. If both are set, the process branches to the process of S22 to perform notification, and the information for which a response is requested branches to the process of S18 to perform two processes in parallel.
In the process of generating response information, first, the condition determination unit 351 inputs the collection request information from the information selection unit 323. The input unit 328 is instructed to input the sensor value of the item indicated by the item information included in the collection request information. The input unit 328 acquires a sensor value from the detector corresponding to the instructed item, and outputs the acquired sensor value to the condition determination unit 351. For example, if the item information is “speed”, the input unit 328 inputs the speed sensor value from the speed detector 341 and passes it to the condition determination unit 351 (S18). Furthermore, when the condition information is set in the collection request information, the condition determining unit 351 determines whether or not the acquired sensor value satisfies the condition (S19). For example, when “speed <20 km” is set in the condition information, if the acquired speed sensor value is 20 km, the condition is not satisfied and the process ends. When the sensor value is smaller than 20 km, the condition determination unit 351 outputs the collection request information and the sensor value to the response information generation unit 352. The response information generation unit 352 generates response information using the input sensor value and collection request information (S20). It has been described that the format of the response information is, for example, the format shown in FIG. When creating response information in the format of FIG. 13, the response information generation unit 352 sets the district identifier of the collection request information in the district identifier 133. Also, the collection item information 134A is set with the collection item of the collection request information. The acquired sensor value is set in the collected value information 134B. Information for identifying the mobile device 300 that is assigned with information unique to the mobile device 300 in advance and stored in the memory is set in the sender information 134C. Position information measured by the position positioning unit 313 is set in the sender position information 134D. Alternatively, if a district identifier is set in the district identifier 133, information may not be set in the sender location information 134D. In the transmission date / time information 134E, the date / time when the response information was generated or the date / time when the sensor value was detected is set. The response information generation unit 352 outputs the generated response information to the communication unit 353, and the communication unit 353 transmits the input response information to the center device 400 via the network 230 (S21). In addition to transmitting the response information from the communication unit 353, the response information may be wirelessly transmitted from the response signal transmission unit 354 (an example of the communication unit) via the antenna 321.
[0038]
Processing in the case of a notification instruction will be described. The information selection unit 323 outputs the collection request information to the output unit 324 when there is a notification instruction in S17. The output unit 324 displays information set subsequent to the notification instruction information from the display device 325. At this time, when mapping the map information to the notified information, the map information is input from the map information storage unit 350 to map the map information and the notification information (S22).
The output unit 324 displays the notification information mapped to the map information on the display device 325 (S23).
[0039]
In S <b> 18, the condition determination unit 351 has acquired the sensor value from the detection device 340 via the input unit 328. However, in addition to collecting sensor values, when collecting the work status of a user who uses the mobile device 300, or when the taxi is equipped with the mobile device 300, the vacant vehicle status of the taxi is collected as collection information. May be collected. In such a case, the display device 325 displays a message prompting the user to input information to be collected, waits for the user to input predetermined information from the input device 329, and inputs the predetermined information. The input device 329 thus provided outputs the input information to the condition determination unit 351. For example, when the truck of the courier is equipped with the mobile device 300, a message prompting the driver to input work information is displayed from the display device 325 if the request information is for collecting work status. The driver inputs the current work from the input device 329. The input work situation is input to the condition determination unit 351 and output to the response information generation unit 352. The input information input from the input device 329 is set in the collected value information to generate response information, and the response information is transmitted from the communication unit 353 or the response signal transmission unit 354 to the center device 400.
[0040]
When the communication unit 353 receives information for notification via the network 230, the processing from S22 is performed.
[0041]
The mobile device 300 operates as described above. In this system, it is desirable that the mobile device 300 is mounted on all vehicles in order to increase the collected information. However, for example, a traffic flow monitor sufficiently satisfies the function if the mounting rate is a certain level. Is described below with reference to FIG.
[0042]
A response rate when response information is transmitted from mobile device 300 to center device 400 will be described with reference to FIG.
FIG. 18 is a diagram illustrating an example of a graph showing a relationship between a traffic flow monitoring degree (link travel estimation time) and a mounting rate of a mobile device on a vehicle and a collection interval.
In FIG. 18, the vertical axis represents the link speed estimation error rate (hereinafter referred to as the error rate), the horizontal axis represents the probe car rate, and the communication cycle can be compared between every 5 minutes and every other minute. It is shown in the figure. The probe car rate indicates the rate of vehicles equipped with the mobile device 300 among all vehicles in a predetermined area, for example, the area A. The mounting rate is increasing from left to right on the graph. The error rate indicates an error rate at which response information does not arrive from the mobile device 300 to the center device 400. On the graph, the error rate decreases from top to bottom. In other words, the arrival rate increases downward. According to FIG. 18, when the probe car rate is 10%, the error rate when the communication cycle is 5 minutes is about 25%, and the error rate when the communication cycle is 1 minute is about 20%. When the probe car rate is 10%, the arrival rate when the communication cycle is 5 minutes is about 75% (100% -25%), and the arrival rate when the communication cycle is 1 minute is about 80%. % (100% -20%). When the probe car rate is 100%, the arrival rate when the communication cycle is 5 minutes is about 80%, and the arrival rate when the communication cycle is 1 minute is about 90%. For example, if traffic information is generated as content information in the center apparatus 400, a rate of 75% to 80% is assumed when the mobile device 300 is mounted on 10% of vehicles in the area to be investigated and the communication cycle is 1 minute. Can collect response information. Therefore, the content information created based on this response information is considered to be highly reliable traffic jam information. Furthermore, if the mobile device 300 is mounted on 100% of vehicles in the area to be surveyed, response information can be collected at a rate of 80% to 90%, assuming a communication cycle of 1 minute. Therefore, the content information created based on this response information is considered to be more reliable traffic jam information.
[0043]
Next, an example in which content information is notified from the center device 400 to the mobile device 300 and the content information received by the mobile device 300 is displayed on the display device 325 will be described.
FIG. 19 is a diagram illustrating an example in which content information is displayed on a display device. (A) is an example in which content information of traffic information indicating traffic congestion is displayed, and (B) is a content information of weather information indicating rainfall. (C) is an example showing content information of arrangement information such as security guards. Since the center device 400 can receive the response information having the synchronization from the mobile device 300, the content information created based on the response information having the synchronization is considered to be highly reliable. The mobile device 300 receives the collection request information and immediately returns response information. The center device 400 generates content information immediately after receiving the response information, and distributes the generated content information to the mobile device 300 immediately. For this reason, the mobile device 300 can acquire content information with high real-time characteristics, and has an effect of confirming content information close to the current state.
In addition, since the position of the mobile device 300 is measured using the quasi-zenith satellite, the positioning accuracy is high. For example, in the traffic information display of FIG. 19A, the traffic congestion between 5 km and 3 km is detailed. I can confirm. According to FIG. 19A, the road that goes straight on the cross road and the road that joins the road that turns left and goes straight are 3 km each, and the straight road after joining is a 5 km traffic jam. In addition, in the example of FIG. 19B, it is possible to confirm in detail the division between the region with a rainfall of 50 mm / hour and the region with a rainfall of 10 mm / hour. Further, in the example of FIG. 19C, it is possible to confirm in detail a point where 10 or more guards are arranged and a point where five or less are arranged.
[0044]
As described above, in the second embodiment, mobile device 300 receives collection request information having district information from center device 400, and when its own location is included in the district indicated by the district information. The requested collection information is acquired, and the acquired collection information is included in the response information and transmitted to the center apparatus 400. As described above, since the collection request information includes the district information, the mobile device 300 is the collection request information to be processed even if the information specifying each mobile device is not included in the collection request information. It can be determined whether or not there is.
In addition, since the condition information is set for the collected information, a response is made when the condition is satisfied, so that an unnecessary response can be avoided and the generation of traffic can be prevented. In addition, communication charges can be reduced.
In addition, the mobile device 300 measures its own position based on information from the quasi-zenith satellite. For this reason, for example, even if the vehicle on which the mobile device is mounted is traveling on a back road that is not known by a person other than the local one, rather than the main trunk road, it is possible to accurately respond to its own position to the center device. Also, even if the mobile device is in a position where it is difficult for radio waves to reach, such as on a mountain road or in a building, it is possible to measure its own position and respond to the center device. Further, since the response can be transmitted through the network or the quasi-zenith satellite, when one of the communication states is bad or one of the communication becomes impossible, the other communication means can respond.
In addition, since the content information created by the center device with high simultaneity and high real-time properties is received and displayed, the displayed content information can be used, for example, to avoid traffic jams or to arrange personnel positions. It is possible to achieve a high effect on the result of the response using the content information, changing the rain, dealing with the rain, etc.
In addition, since the content information can be received via the network or via the quasi-zenith satellite, even if one of the communication means becomes unavailable, it can be received using the other communication means. .
In addition, since the information requested to be collected can be input by an input operation such as manual input, screen touch input, or pen input, it is possible to cope with a case where collection of information that cannot be mechanically acquired is requested. Further, when the means for collecting information mechanically becomes unavailable, it can be dealt with by an input operation instead of automatic input.
[0045]
Embodiment 3 FIG.
The transmission timing of the collection request information transmitted by the center device 400 will be described.
FIG. 20 is a diagram illustrating an example of the format of the collection request information. As shown in FIG. 20, the collection request information is generated for each district, and when transmitted from the center apparatus 400, the collection request information for different districts is mixed and transmitted in one frame. Further, in one frame, there may be a mixture of collection request information that are in the same district and have different collection request information. Further, in one frame, collection request information having the same information requesting collection and different districts may be mixed.
If the information requesting collection is different in the same district, a format in which a plurality of requested content information is added to one district as shown in FIG. 12 may be used.
Also, as shown in FIG. 12, information for requesting a response and information for giving a notification may be mixed in one frame.
The information transmission unit 419 of the center apparatus 400 transmits the collection request information included in one frame by broadcast.
[0046]
FIG. 21 is a diagram illustrating an example in which collection request information is periodically transmitted and an example in which collection request information is transmitted over multiple channels.
First, a specific example of periodically transmitting collection request information will be described.
For example, car life support (as an example of car life support, there is one that notifies the driver's safety by inputting information) that requires a response from the vehicle on which the mobile device 300 is mounted. The collection request information is periodically and repeatedly transmitted to ensure a response. On the other hand, for traffic information such as traffic information in which simultaneity is effective and the response may be several percent of the total, transmission may be performed once instead of periodically.
Next, a specific example of transmitting collection request information using multiple channels will be described.
Separate frequencies for each purpose (for example, collection request information for the purpose of creating traffic jam content information and collection request information for the purpose of creating weather information content information) Assign and send. If the purpose is different, you can change the frame.
The information transmission unit 419 of the center device 400 has a configuration that has a plurality of communication means and can transmit (broadcast) at the same timing for each channel even when transmitting in multiple channels. It shall be. Alternatively, when it is impossible to have a plurality of communication means, transmission is performed by shifting the timing for each channel.
[0047]
The district identifier shown in FIG. 21 has large, medium, and small levels. For example, “A district” is composed of “A district, I district, U district”, and the above “A district” is composed of “Ta district, Chi district, Tatsu district”. Use if you have. When the districts that collect information are “A district, i district, u district” by hierarchizing district identifiers, “A district, i district, u district” is not set separately. One area should be set.
[0048]
As described above, in this embodiment, the collection request information is periodically transmitted according to the purpose, or the frequency is assigned for each purpose and transmitted. For this reason, notification of response information suitable for the purpose is performed.
Even if there are a plurality of pieces of district information, collection request information for each piece of district information is transmitted in the same broadcast, so that the response information can be synchronized.
Even if there is one district information and multiple collection request information is set for one district information (in this case, the collection request information is different), the collection request information is sent by broadcast. Since it is transmitted, simultaneity can be secured in the response information. For this reason, when it is considered that there is some relationship between the different collection request information, the response information for each collection request information can be compared to confirm the relationship. For example, when there is some relationship between the traffic jam and the rainfall, the traffic information and the rainfall information can be compared to confirm the relationship between the two.
[0049]
Embodiment 4 FIG.
In this embodiment, a case where the mobile device 300 includes an authentication unit will be described.
For example, assume an environment in which the mobile device 300 is installed in each taxi owned by a plurality of different taxi companies. In such an environment, collection request information for the purpose of collecting unoccupied vehicle information is transmitted from the center device 400. However, for example, A, B, C, Suppose there is a case where it is desired to target taxis owned by Company A and Company B among Company D. In this case, if a means for distinguishing taxi companies is not provided, taxis of company C and company D receive the collection request information and perform processing. Therefore, the mobile device 300 is provided with an authentication means, and the center device 400 adds an electronic signature for determining the company to the collection request information. The mobile device 300 verifies the electronic signature of the received collection request information. If signature verification fails, the collection request information is discarded. If the signature verification is successful, the collection request information is processed.
[0050]
Embodiment 5 FIG.
In the embodiment described above, the district identifier is set in association with the latitude information and the longitude information as shown in FIG. However, for example, in the case of generating content information of traffic information for the entire Tomei Expressway (if it is not a whole, it may be a range that spans multiple districts), the district where the information is collected is indicated by latitude information and longitude It cannot be judged from information. Therefore, for example, it is considered that the highway is constituted by a plurality of breakpoints divided at predetermined distances. Then, latitude information and longitude information are made to correspond to each of a plurality of break points. Furthermore, an expressway identifier for identifying the expressway is set, and latitude information and longitude information of breakpoints constituting the expressway specified by the expressway identifier are linked to the expressway identifier. This highway identifier corresponds to the district identifier and can be set in the district information of the collection request information.
[0051]
Embodiment 6 FIG.
In this embodiment, the information processing unit 421 will be described.
Information transmitted as response information when the type of content information to be generated is traffic jam information is position information indicating at least a speed value and a position where the response information is generated. The position information is used when it is determined whether the vehicle that has transmitted the response information is traveling on the road or stopped. For example, if the speed value is 0 km / hour, it cannot be determined from the speed value alone whether the vehicle is stopped due to traffic congestion or is truly stopped. Whether the position indicated by the position information is a road, a parking lot, or a shoulder is determined from the map information storage unit using the position information. Based on this determination result, it is possible to determine whether the vehicle that has transmitted the response information is traveling on the road or stopped. And the vehicle which has stopped truly is excluded from the original information which produces | generates the content information of traffic jam information.
[0052]
What has been described as “to part” in the above description of the embodiment may be configured by a program that can be operated by a computer in part or in whole. These programs can be created in C language, for example.
In addition, what has been described as “˜unit” in the description of the embodiment may be realized by firmware stored in a ROM (Read Only Memory). Alternatively, it may be implemented by software, hardware, or a combination of software, hardware, and firmware.
Further, the program for implementing each of the above embodiments is recorded on a recording medium. As the recording medium, a recording apparatus using another recording medium such as a magnetic disk device, an FD (Flexible Disk), an optical disc, a CD (Compact Disc), an MD (Mini Disc), or a DVD (Digital Versatile Disk) may be used.
The program is loaded into a computer and executed based on the control of the processor.
Further, although the case where the quasi-zenith satellite is used as the means for sending the district information has been described, in the present invention, other means such as terrestrial digital broadcasting or geostationary satellite may be used as the broadcasting means.
[0053]
【The invention's effect】
Since the collection request information is transmitted by designating a district, there is an effect that the traffic in transmission can be eliminated as compared with the case where the collection request information is individually transmitted to a plurality of mobile devices.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an image of an entire information collection system according to a first embodiment.
FIG. 2 is a diagram illustrating an example of a configuration of an information collection system according to the first embodiment.
FIG. 3 is a diagram showing a technology related to a quasi-zenith satellite planned in the future.
FIG. 4 is a diagram showing a technology related to a quasi-zenith satellite planned in the future.
FIG. 5 is a diagram illustrating an example of a configuration of a center apparatus 400.
FIG. 6 is a diagram illustrating an example of a correspondence relationship storage unit.
7 is a diagram illustrating an example of collection request information transmitted from the center apparatus 400. FIG.
FIG. 8 is a diagram illustrating an example of collection request information transmitted from the center apparatus 400 and relayed by the quasi-zenith satellite.
FIG. 9 is a flowchart showing an example of the operation of the center apparatus 400 according to the first embodiment.
10 is a diagram illustrating an example of a customer information storage unit 427. FIG.
11 is a diagram showing an example of a transmission information memory 418. FIG.
FIG. 12 is a diagram showing an example of collection request information.
FIG. 13 is a diagram showing an example of response information.
FIG. 14 is a diagram illustrating an example of a collection information memory 415.
FIG. 15 is a diagram illustrating an example of a machining information memory 423.
FIG. 16 is a diagram illustrating an example of a configuration of a mobile device 300.
FIG. 17 is a flowchart showing an example of the operation of the mobile device 300.
FIG. 18 is a diagram showing an example of a graph showing a relationship between a traffic flow monitoring degree (link travel estimation time) and a mounting rate of a mobile device on a vehicle and a collection interval;
19 shows an example of information displayed on the display device 325 of the mobile device 300. FIG.
20 is a diagram showing an example of collection request information transmitted from the center apparatus 400. FIG.
FIG. 21 is a diagram showing an example of collection request information transmitted from the center apparatus 400.
[Explanation of symbols]
100 collection request information, 110 header area, 110A header area, 120 data area, 120A data area, 121 district identifier, 121A district identifier, 122 request content information, 122A request content information, 130 response information, 131 header information, 132 data section 133 district identifier, 134 collection information, 134A collection item information, 134B collection value information, 134C sender information, 134D sender location information, 134E transmission date and time information, 210 GPS satellite, 220 quasi-zenith satellite, 230,231 network, 240 Information usage side, 240A information providing terminal, 240B information providing terminal, 240N information providing terminal, 300 mobile device, 311 antenna, 312 GPS signal receiving unit, 313 position positioning unit, 321 antenna, 322 wireless receiving unit, 323 information selecting unit 3 24 output unit, 325 display device, 326 correspondence relationship storage unit, 327 district determination unit, 328 input unit, 329 input device, 340 detection device, 341 speed detector, 342 wiper detector, 343 light detector, 344 sensor device, 345 speed sensor, 346 wiper sensor, 347 light sensor, 350 map information storage unit, 351 condition determination unit, 352 response information generation unit, 353 communication unit, 354 response signal transmission unit, 400 center device, 411 antenna, 412 information reception unit 413 Communication unit, 414 Information collection unit, 415 Collection information memory, 416 Information editing unit, 417 Information generation unit, 418 Transmission information memory, 419 Information transmission unit, 421 Information processing unit, 422 Correspondence relation storage unit, 423 Processing information memory 424 output unit, 425 map information storage unit, 42 Input section, 427 customer information storage unit.

Claims (17)

In the center device that collects original information for generating content information and generates content information using the collected original information,
A collection request information generating unit for generating collection request information including request information for collecting the original information and district information indicating a target district for collecting the original information;
A wireless transmission unit that wirelessly transmits the collection request information generated by the collection request information generation unit to a predetermined district including the target district;
A communication unit that receives response information including original information with respect to the collection request information transmitted from the wireless transmission unit;
A content information generating unit that generates the content information using the original information of the response information received by the communication unit and stores the generated content information as content information of a target district indicated by the district information; A center device characterized by The request information includes item information indicating an item of the original information and condition information for collecting the original information,
The center device according to claim 1, wherein the communication unit receives response information that satisfies the condition information. 2. The center apparatus according to claim 1, wherein the wireless transmission unit broadcasts a plurality of the collection request information, each having different district information and the same request information. 2. The center apparatus according to claim 1, wherein the wireless transmission unit broadcasts a plurality of the collection request information having the same district information and different request information. The center device according to claim 1, wherein the wireless transmission unit allocates different channels to the plurality of collection request information, and broadcasts the plurality of collection request information. The center device according to claim 1, wherein the wireless transmission unit broadcasts the content information generated by the content information generation unit together with the collection request information. The response information includes source information for identifying the sender of the response information,
The center device according to claim 1, wherein the communication unit transmits the content information generated by the content information generation unit to a caller identified by the transmission source information. The center device includes an input unit for inputting content type information indicating the type of content information and content district information indicating a district where the content information is generated,
The collection request information generation unit generates the item information and the condition information based on the content type information input by the input unit, and generates the district information based on the content district information. The center device according to claim 2. The center device according to claim 1, further comprising a content providing unit that provides the content information generated by the content information generating unit via a network different from the predetermined network. A mobile device characterized by comprising the following elements: (a) a wireless receiver for wirelessly receiving collection request information having at least district information indicating a predetermined district and item information indicating items of information to be collected;
(B) a position positioning unit for determining position information by determining its own position;
(C) a district determination unit that determines a district including location information obtained by the location measurement unit and outputs district determination information;
(D) Comparing the district determination information output by the district determination unit with the district information of the collection request information received by the wireless reception unit, the result information of either matching or not matching is notified. District comparison department,
(E) a detection unit for detecting a predetermined sensor value from the outside;
(F) When the result information notified by the district comparison unit indicates that they match, the sensor value of the item indicated by the item information of the collection request information is input from the predetermined sensor value detected by the detection unit Input section,
(G) a response information generation unit that generates response information having the sensor value input by the input unit;
(H) A communication unit that transmits the response information generated by the response information generation unit via either a predetermined network or wireless. 11. The mobile device according to claim 10, wherein the response information generation unit includes either the position information or the district information in the response information in order to determine a position where the request information is generated. The collection request information includes condition information indicating conditions of information to be collected,
The mobile device includes a condition determination unit that compares the sensor value input by the input unit with the condition information and outputs the sensor value to the response information generation unit when a condition is satisfied.
11. The mobile device according to claim 10, wherein the response information generation unit generates the response information when the sensor value is output by the condition determination unit. The wireless reception unit wirelessly receives predetermined content information and district information corresponding to the content information,
The district comparison unit compares the district determination information output by the district determination unit with the district information corresponding to the content information received by the wireless reception unit, and either matches or does not match Notify the result information,
The mobile device includes a display unit that receives the result information from the district comparison unit and inputs and displays the content information when the result information indicates the coincidence. The mobile device according to claim 10. The communication unit receives the predetermined content information and the content information via the predetermined network,
The mobile device according to claim 10, further comprising a display unit that inputs and displays the content information. The mobile device includes an item response unit that inputs item response information for an item indicated by the item information of the collection request information,
The input unit inputs the item response information input by the item response unit,
The mobile device according to claim 10, wherein the response information generation unit generates response information including item response information input by the input unit and district information of the collection request information. A center device that wirelessly transmits collection request information for requesting collection of original information for generating predetermined content information;
An information collection system comprising a mobile device that wirelessly receives the collection request information wirelessly transmitted by the center device,
The center device is
A collection request information generating unit that generates collection request information by associating district information indicating a target area from which the original information is collected with request information for collecting the original information;
A wireless transmission unit that wirelessly transmits the collection request information generated by the collection request information generation unit;
A communication unit that inputs the original information and the district information of the collection request information as response information to the collection request information transmitted from the wireless transmission unit by one of a predetermined network and radio,
The district information of the district including the position indicated by the location information of the response information input by the communication unit is obtained, and the content information is generated using the original information of the response information. A content information generation unit corresponding to the information,
The mobile device is
A wireless reception unit that wirelessly receives the collection request information that is wirelessly transmitted from the wireless transmission unit of the center device and relayed by the satellite;
A positioning unit that determines its own position and obtains position information;
A district determination unit that determines the district including the location information obtained by the location measurement unit and outputs the district determination information;
The district comparison unit that compares the district determination information output by the district determination unit with the district information of the collection request information received by the wireless reception unit and notifies the result information of either matching or not matching When,
A detection unit for detecting a predetermined sensor value from the outside;
An input for inputting the sensor value of the item indicated by the item information of the collection request information from the predetermined sensed value detected by the detection unit when the result information notified by the district comparison unit is coincident And
A response information generating unit that generates response information including the sensor value input by the input unit and the district information of the collection request information;
An information collection system comprising: a communication unit that transmits the response information generated by the response information generation unit by either one of a predetermined network and radio. 17. The information collection system according to claim 16, wherein the information collection system includes a predetermined satellite that wirelessly receives the collection request information wirelessly transmitted from the center device and relays the collection request information received wirelessly. system.

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