JP6874299B2 - Traffic support system - Google Patents

Description

The present invention relates to a traffic support system capable of assisting a vehicle in driving safely by, for example, calling attention to an information terminal possessed by the driver of the vehicle.

From a data center that has map data representing geographic information in a certain area and an information processing device that acquires various traffic information in this area in real time, various traffic participants located in this area (for example, A traffic support system that transmits traffic information to vehicle drivers and pedestrians is known.

In this type of transportation system, vehicle drivers and pedestrians own information terminals (for example, smartphones) capable of wireless communication, and each information terminal sends its own position information to an information processing device in a data center. It is repeatedly transmitted at predetermined time intervals.
Therefore, the information processing device can recognize the position of each information terminal on the map represented by the map data in real time from the map data and each information terminal.
Further, each information terminal transmits ID information representing itself together with the position information to the information processing device. Therefore, if the ID information includes the attribute information of the traffic participants moving together with the information terminal specified by the ID information, the information processing apparatus can recognize the attributes of each traffic participant. That is, the information processing device can recognize whether each traffic participant is a vehicle driver, a pedestrian, a bicycle, or another type of traffic participant.

The information processing device repeatedly transmits the information collected from each information terminal to, for example, an information terminal owned by the driver of the vehicle at predetermined time intervals.
For example, if the information sent to this information terminal contains information that "there is a pedestrian near your vehicle," the driver who owns this information terminal is concerned with driving the vehicle. It becomes possible to pay attention.

Further, in recent years, for example, map data recorded in an information processing device of a data center operated by a public institution may include information on a traffic accident-prone area. That is, when there is a specific area in the entire area represented by this map data in which a traffic accident is likely to occur, the data corresponding to the specific area in the map data may include information indicating that the traffic accident frequently occurs area. is there.
Therefore, for example, when the information processing device determines that a vehicle moving with a certain information terminal is traveling around a traffic accident-prone area, the information processing device tells the information terminal that "traffic accidents frequently occur near your vehicle." It is possible to send warning information that "there is an area".

The information terminal that has acquired the alert information alerts the driver by voice, for example. In addition, the information terminal that has acquired the alert information displays a map image on its own display and displays the traffic accident-prone area on this map image more prominently than the surrounding area (for example, in a color different from other parts). By displaying), the driver is alerted.
Therefore, the driver of the vehicle can recognize that there is a traffic accident-prone area near the position where the vehicle is currently located.

JP-A-2007-323578

For example, when the time when the information terminal receives the alert information is midnight, the traffic volume around the traffic accident-prone area is generally extremely small.
Therefore, in this case, it is less necessary for the driver of the vehicle, which is the owner of the information terminal that has received the alert information, to drive in this traffic accident-prone area while paying special attention.
That is, the alert information received by the information terminal may include information that is not useful to the owner of the information terminal.

Therefore, it is ideal if the information terminal can determine whether or not the received alert information is useful.
For example, based on the current time, the information processing device should determine whether or not to send the warning information that "there is a traffic accident-prone area near your vehicle" to the information terminal, and send it. It is possible to send the alert information to the information terminal only when the judgment is made.

By the way, the information processing device transmits the alert information to the information terminal when each of the following processes 1 to 3 is completed.
Process 1: The information terminal transmits its own position information and ID information to the information processing device.
Process 2: Based on the position information received by the information processing device, the information on the area where traffic accidents frequently occur, and the information on the time and the like, a process of determining whether or not to send the alert information to the information terminal is performed.
Process 3: When it is determined that the alert information should be transmitted to the information terminal, the information processing device transmits the alert information to the information terminal.

However, a predetermined time (for example, several seconds) is required to execute all the processes 1 to 3.
Therefore, if the owner of the information terminal that receives the alert information is the driver of the vehicle, the position of the information terminal changes by several tens of meters or more while the information processing apparatus executes processes 1 to 3. there is a possibility. In other words, the position of the information terminal received by the information processing apparatus in the process 1 and the position of the information terminal receiving the information transmitted by the information processing apparatus after the end of the process 3 may be separated by several tens of meters or more.
Therefore, there is a possibility that the vehicle has already entered the traffic accident-prone area before the time when the information terminal receives the alert information arrives.

The present invention has been made to address the above-mentioned problems. That is, one of the objects of the present invention is to determine at an appropriate timing whether or not the alert information transmitted from the information processing device that acquires the position information of a plurality of traffic participants to the information terminal is useful. Moreover, it is an object of the present invention to provide a traffic support system capable of switching the mode of the alert activation operation by the information terminal according to the determination result.

The traffic support system according to the aspect of the present invention for achieving the above object is
An information terminal (25) that can move together with the target moving object (50), which is a vehicle,
Map information representing the place where the information terminal is located and the area including the surrounding area, and the caution recommended area (DA1) to call attention to the target moving object that is a part of the area and is about to enter. , DA2, 30Z), and an information processing device (16) having a warning recommended area information.
It is a traffic support system (10) equipped with
The information processing device
The target moving body position information acquisition means (16) capable of acquiring the target moving body position information which is the position of the target moving body, and
Based on the target vehicle location information and the alert recommendation region information the subject vehicle location information acquisition unit acquires the position of the front Symbol target mobile the target mobile is in the outside of the reminder recommended area A determination means (16) for determining whether or not to transmit the alert information to the information terminal by determining whether or not the distance from the to the recommended alert area is equal to or less than a predetermined distance.
When it is determined that the distance from the position of the target moving object to the caution recommended area is equal to or less than the predetermined distance, the transmission means (16) for transmitting the caution information to the information terminal and the transmission means (16).
With
The information terminal
A terminal-side receiving means (29) capable of receiving the warning information transmitted from the transmitting means, and
A behavior information acquisition unit that acquires behavior information including the traveling direction of the vehicle and position information about the turn signal of the vehicle which is the subject moving body,
Peripheral mobile information acquisition means (29) for acquiring peripheral mobile information, and
When the terminal-side receiving means receives the warning information, the usefulness determination for determining the usefulness of the warning information received by the terminal-side receiving means using the behavior information and the peripheral mobile body information. Means (27) and
Based on the determination result of the usefulness determining means, the switching means (27) for switching the mode of the alerting activation operation based on the alerting information by the alerting means (54, 55),
To be equipped.

For example, available smart phone, a tablet computer, and a notebook personal computer as an information terminal.

For example, determine the usefulness of the alert information usefulness determination unit of the information terminal that has acquired the alert information from the information processing apparatus, Zui small without a base in one of the behavior information and the peripheral mobile information To do.
Then, the switching means switches the mode of the alert activation operation of the alert means according to the determination result of the usefulness determination means.

Moreover usefulness determination means is not based on the information from the information processing apparatus determines the usefulness of alert information based on at least one obtains information of behavior information acquisition unit and the peripheral mobile body information acquiring hand stage ..
Therefore, the information terminal can determine the usefulness of the alert information earlier than the case where the determination is based on the information from the information processing device. That is, the information terminal can determine the usefulness of the alert information at an appropriate timing.

In one aspect of the invention
The information terminal
Equipped with a time acquisition means (25, 50) for acquiring the time,
When the terminal side receiving means has received the alert information, and based also before SL at time, determine the usefulness of the reminder information the terminal side receiving means receives.

If the present invention is carried out in this embodiment, the information terminal can determine the usefulness of the alert information at a more appropriate timing.

In one aspect of the invention
The information terminal
A weather information acquisition means (25, 50) for acquiring weather information around the target moving object is provided.
When the terminal side receiving means has received the alert information, prior SL also based on the weather information, determine the usefulness of the reminder information the terminal side receiving means receives.

If the present invention is carried out in this embodiment, the information terminal can determine the usefulness of the alert information at a more appropriate timing.

In one aspect of the invention
The switching means
The alerting means is configured to switch between a first state in which the alerting activation operation is executed and a second state in which the alerting activation operation is not executed.

Further, in another aspect of the present invention,
The switching means
Depending on the content of the alert activation operation, the alert activation means is used in a first state in which the alert activation operation is executed in the first aspect and in a second mode different from the first aspect. Is configured to switch to the second state, which executes.

In the above description, in order to help the understanding of the present invention, the names and / or symbols used in the embodiments are added in parentheses to the configurations of the invention corresponding to the embodiments described later. However, each component of the present invention is not limited to the embodiment defined by the reference numerals. Other objects, other features and accompanying advantages of the invention will be readily understood from the description of embodiments of the invention described with reference to the drawings below.

It is a figure which shows the traffic support system which concerns on embodiment of this invention. It is a figure which shows the pedestrian (child) who carries a beacon. It is a figure which shows the pedestrian (adult) who carries a beacon. It is a figure which shows the vehicle which moves with a smartphone. It is a figure which shows the display of a data center. It is a figure which shows the principle that the information processing apparatus of a data center estimates the position of a beacon based on the estimated distance from each smartphone to a beacon calculated by two smartphones based on the radio signal transmitted by a beacon. It is a figure which shows the principle that an information processing apparatus estimates the position of a beacon based on the estimated distance from each smartphone to a beacon calculated by three smartphones based on the radio signal transmitted by a beacon. It is a flowchart which shows the process which IC chip of a beacon executes. It is a flowchart which shows the process which the ECU of a smartphone executes. It is a flowchart which shows the process which the information processing apparatus executes. It is a flowchart which shows the process which the ECU of a smartphone executes.

Hereinafter, the traffic support system 10 according to the embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the traffic support system 10 of the present embodiment includes a data center 15, a beacon 20, and a smartphone 25 as main components.

The data center 15 includes an information processing device 16 (computer server) and a display 18.

As shown in FIG. 1, the information processing device 16 of the data center 15 performs data communication with each smartphone 25 via a network.
This network includes the communication network of the telecommunications carrier and the Internet network.
Each smartphone 25 performs wireless communication (data communication) with a base station of a telecommunications carrier. This base station is connected to the Internet network via the communication network of the telecommunications carrier.
The information processing device 16 performs data communication with the Internet network.
Further, as will be described later, each smartphone 25 can receive the radio wave transmitted by the beacon 20.

The information processing device 16 installed in the building of the data center 15 is an electronic control circuit having a microcomputer including a CPU, ROM, RAM, an interface, etc. as a main component. The CPU realizes various functions described later by executing instructions stored in a memory (ROM). Map data and various software described later are recorded in this memory. As is well known, the CPU executes each operation described later by executing an instruction of each software.

The dynamic map DM shown in FIG. 5 is displayed on the display 18 connected to the information processing device 16. This dynamic map DM is composed of a plurality of layers (layers) that are superposed on each other. The degree of change of the information represented by each layer according to the time change differs for each layer.
The layer with the smallest change (substantially unchanged) with time change is a map image based on the above map data. The other layers represent information that changes over time. For example, one layer separate from the map image represents the location information of the beacon 20 and the smartphone 25.

This map image represents a specific area around the data center 15.
The map image includes images of two roads R1 and R2 parallel to each other. Further, the map image includes roads R3, R4, R5, and R6 orthogonal to roads R1 and R2. All of these roads R1, R2, R3, R4, R5 and R6 are passable by vehicles (including bicycles and motorcycles) and pedestrians.
Roads R1 and R3 are divided into a left lane and a right lane by a central separating line drawn by a dashed line. The vehicle will pass in the left lane of roads R1 and R3.
There is no central separation line on roads R2, R5 and R6. However, the vehicle can travel on roads R2, R5, R6 in both directions (ie, not one way).
Road R4 is a one-way road. That is, the vehicle can travel on the road R4 only in the direction of the arrow.
The alternate long and short dash line indicates the guardrail. That is, a sidewalk is formed between the side edges of the roads R1, R3, R5, and R6 and the guardrail.
Further, a traffic light ts is installed at an intersection where the road R1 intersects the roads R3 and R5. No traffic light ts is installed in other places in the map image.
Road R5 is a bridge. A river LV parallel to the roads R1 and R2 flows below the road R5.
Further, the map image includes images of a plurality of buildings (houses, buildings, factories, etc.) BL.

This map image is composed of a large number of grids (minimum grid-like units). The length of each side of this grid is the distance corresponding to 2 m of the actual geography.
Therefore, when the current position of the beacon 20 (estimated position AC) and the current position of the smartphone 25 on the map image are obtained as described later, these current positions correspond to one grid.

On the map image, there are an accident-prone area DA1 and an accident-prone area DA2 drawn by a two-dot chain line. When a vehicle traveling on the road R4 enters the road R1, accidents in which a bicycle or / or a pedestrian and a vehicle come into contact with each other on the sidewalk on the left side of the road R1 actually occur frequently in the accident-prone area DA1. There is. Further, since the traffic light ts is not installed at the intersection indicated by the accident-prone area DA2, traffic accidents actually occur frequently in the accident-prone area DA2.
Further, the road R2 is a 30 km / h zone 30Z. That is, the speed limit of the vehicle when traveling on the road R2 is 30 km / h. Since the road R2 is an elementary school commuting route, the road R2 has a 30 km / h zone of 30Z.
These accident-prone areas DA1, DA2 and 30km / h zone 30Z are one of the recommended areas for calling attention.

Beacon 20 is a small and lightweight tag.
An IC chip 22, a battery 23, and an antenna 24 are provided inside the case 21 that constitutes the outer shape of the beacon 20.

The IC chip 22 is a small electronic component having one substrate and a large number of electronic components (for example, transistors, resistors, capacitors, and diodes) mounted on the substrate. The IC chip 22 has a function of generating a wireless signal (radio wave). The standard of radio waves generated by the IC chip 22 is Bluetooth Low Energy. That is, the IC chip 22 generates radio waves in the 2.4 GHz band. The IC chip 22 generates a radio signal every predetermined time (for example, every 100 milliseconds). Further, each time the IC chip 22 generates a radio signal, the IC chip 22 generates a beacon ID signal for distinguishing the beacon 20 from other beacons.

The battery 23 is a button type battery. The battery 23 always supplies electric power to the IC chip 22 and the antenna 24 until the capacity becomes zero. Since the standard of the radio wave generated by the IC chip 22 is Bluetooth Low Energy, the power consumption of the battery 23 per unit time is small.

The antenna 24 is connected to the IC chip 22. When the IC chip 22 supplied with the power of the battery 23 generates a wireless signal, the antenna 24 repeatedly transmits the generated wireless signal to the outside together with the beacon ID signal at predetermined time intervals (for example, every 100 milliseconds). To do. Hereinafter, the transmission cycle of the radio signal by the beacon 20 is referred to as a “beacon transmission cycle”.

Further, when the IC chip 22 generates a radio wave (that is, every 100 milliseconds, for example), the IC chip 22 generates a reference strength signal indicating the magnitude of the radio wave strength. The radio wave strength (reference strength) represented by the reference strength signal is the radio wave strength received by the receiver (for example, a smartphone) when the radio wave transmitted by the antenna 24 is received by the receiver (for example, a smartphone) at a position 1 m away from the beacon 20. Indicates the signal strength.

Each one reference strength signal and one beacon ID signal are superimposed on the radio signal generated by the IC chip 22 as one set. A set having a reference strength signal and a beacon ID signal can be superimposed on a radio signal, for example as a payload.
Then, the antenna 24 transmits the radio wave together with the beacon ID signal and the reference intensity signal.

In this embodiment, the pedestrians P1 and P2 shown in FIGS. 2, 3 and 5 carry the beacon 20.
More specifically, a pedestrian P1 who is a child (for example, an elementary school student) wears a bag P1a (for example, a school bag), and a beacon 20 is attached to the bag P1a.
Further, an adult pedestrian P2 wears a bag P2a, and a beacon 20 is attached to the bag P2a.
In the ROM of the information processing device 16 of the data center 15 and the ROM of each smartphone 25, information such as the names, ages, and addresses of the pedestrians P1 and P2 who are the owners of the beacon 20 is recorded in association with the beacon ID signal. Has been done.

The ECU 27, the battery 28, the wireless communication antenna 29, and the GPS receiving antenna 30 are provided inside the case 26 that constitutes the outer shape of the smartphone 25 shown in FIG.

The ECU 27 (electric control unit) is an electronic control circuit having a microcomputer including a CPU, ROM, RAM, an interface, etc. as a main component. The CPU realizes various functions described later by executing instructions stored in a memory (ROM). Further, various software (applications) are installed in the memory of the ECU 27. For example, a "traffic information display application" is installed in this memory.

The ECU 27 can generate a wireless signal.
Further, the ECU 27 can repeatedly generate a terminal ID signal for identifying each smartphone 25 from the other smartphone 25 at predetermined time intervals.

The battery 28 is a rechargeable battery, and always supplies electric power to the ECU 27, the wireless communication antenna 29, the GPS receiving antenna 30, and the display 31 until its capacity becomes zero.

The wireless communication antenna 29 is connected to the ECU 27. When the smartphone 25 is located within the reach of the radio signal transmitted by the beacon 20, the wireless communication antenna 29 transmits the radio signal, the beacon ID signal, and the reference intensity signal transmitted by the beacon 20 every predetermined time (for example, 100 mm). Receive repeatedly every second). Hereinafter, the reception cycle of the wireless signal, the beacon ID signal, and the reference intensity signal transmitted by the beacon 20 by the wireless communication antenna 29 is referred to as a “beacon transmission information reception cycle”. The beacon transmission information reception cycle can be made the same as, for example, the beacon transmission cycle.
Further, the ECU 27 records the received beacon ID signal and reference intensity signal in the RAM in time series.

The GPS receiving antenna 30 is connected to the ECU 27. As is well known, the GPS receiving antenna 30 receives GPS signals transmitted from GPS satellites to provide information regarding the position of the GPS receiving antenna 30 (smartphone 25) (hereinafter referred to as "GPS position information"). It is repeatedly acquired at predetermined time intervals (for example, every 1 second). Hereinafter, the reception cycle of GPS position information by the GPS reception antenna 30 is referred to as a “GPS information reception cycle”.
Further, the ECU 27 records the received GPS position information in the RAM in a time series in the same cycle as, for example, the GPS information reception cycle.

Further, as will be described later, the wireless communication antenna 29 repeatedly sends the beacon ID signal, GPS position information, terminal ID signal, etc. recorded in the RAM to the outside in the same cycle as the GPS information reception cycle, in response to a command from the ECU 27. Send wirelessly.
Further, the wireless communication antenna 29 can receive the wireless signal transmitted by the base station.

Further, a display 31 is provided on the surface of the case 26. This display 31 is also connected to the ECU 27.
Further, an input means (not shown) connected to the ECU 27 is provided on the surface of the smartphone 25. The format of this input means does not matter. That is, the input means may be, for example, a mechanical button that can move relative to the case 26, or a touch panel that forms a part of the display 31.

In the present embodiment, the drivers (not shown) of the plurality of vehicles 50 each possess the smartphone 25.
In FIG. 5, each vehicle 50 is represented by a separate reference numerals “50A”, “50B”, “50C”, “50D”, “50E”, “50F”, and “50G”. Therefore, in the following description, the code of each vehicle may be expressed by "50A", "50B", "50C", "50D", "50E", "50F", or "50G".
Further, in the following description, the codes of the smartphones 25 that move together with each vehicle 50A, 50B, 50C, 50D, 50E, 50F, 50G are referred to as "25A", "25B", "25C", "25D", and "25D". It may be expressed as "25E", "25F", or "25G".

Further, as shown in FIG. 4, each vehicle 50 includes an ECU 52, a transmission / reception means 53, an alarm device 54, and a brake device 55.

The ECU 52 is an electronic control circuit having a microcomputer as a main component including a CPU, a ROM, a RAM, an interface, and the like. The CPU realizes various functions described later by executing instructions stored in a memory (ROM). The ECU 52 is connected to the transmission / reception means 53, the alarm device 54, and the brake device 55.

The transmission / reception means 53 can execute wireless communication with the smartphone 25 by using wireless signals of various communication standards.

The alarm device 54 can generate an alarm sound.

As is well known, the brake device 55 exerts a braking force on each wheel when the brake pedal of the vehicle 50 is depressed by the driver. Further, as will be described later, even when the driver does not step on the brake pedal, the brake device 55 exerts a braking force on each wheel when receiving a command from the ECU 52.

Next, the outline of the operation of the traffic support system 10 will be described. The following description is based on the premise that the following states 1 to 4 are realized.
State 1: The capacities of the battery 23 of the beacon 20 and the battery 28 of the smartphone 25 are not zero.
State 2: The power switch of the smartphone 25 is in the ON state.
State 3: The ECU 27 of the smartphone 25 is reading the traffic information display application. As a result, the map image of the traffic information display application is displayed on the display 31. Further, the smartphone 25 performs wireless communication with the transmission / reception means 53 of the vehicle 50 to which the smartphone 25 moves together.
State 4: Pedestrians P1, P2, and vehicles 50A, 50B, 50C, 50D, 50E, 50F, and 50G are located in a certain area (an area that can be displayed on a map image of a traffic information display application).

In the present embodiment, the radio signal transmitted from the beacon 20 possessed by the pedestrians P1 and P2 reaches several tens of meters ahead of the beacon 20. In other words, when the smartphone 25 is located inside a circle having a radius of several tens of meters centered on the beacon 20, the wireless signal transmitted by the beacon 20 is received by the smartphone.

When the wireless communication antenna 29 of the smartphone 25 receives the wireless signal, the beacon ID signal, and the reference intensity signal transmitted by the beacon 20, the ECU 27 actually receives the intensity of the wireless signal (hereinafter referred to as “actual intensity”) and Reference Intensity Compare the reference intensities represented by the signal. Then, the ECU 27 calculates (estimates) the estimated distance, which is the distance between the smartphone 25 and the beacon 20, based on the actual strength and the reference strength.

Specifically, the ECU 27 calculates the estimated distance as follows.
For example, when the actual strength is significantly larger than the reference strength, the ECU 27 estimates that the estimated distance is in the immediately region. This immediately area is an area where the distance between the beacon 20 and the smartphone 25 is extremely short (for example, an area of 1 m or less).
When the actual strength is slightly larger than the reference strength, the ECU 27 estimates that the estimated distance is in the near region. This near region is a region in which the distance between the beacon 20 and the smartphone 25 is short and far from the immediately region (for example, a region larger than 1 m and 3 m or less).
When the actual strength is smaller than the reference strength, the ECU 27 estimates that the estimated distance is in the far region. This far region is a region where the distance between the beacon 20 and the smartphone 25 is farther than the near region (for example, an region larger than 3 m and 10 m or less).
However, the relationship between the magnitude relationship between the actual strength and the reference strength and the relationship between the three estimated distances is not limited to this relationship.

When the ECU 27 of the smartphone 25 repeatedly calculates the estimated distance every predetermined time (for example, every 100 milliseconds), the ECU 27 calculates the calculated estimated distance together with the reference intensity signal and the beacon ID signal every predetermined time (for example, 100 milliseconds). Every) is recorded in the RAM in chronological order.

By the way, as described above, the ECU 27 records the received GPS position information in the RAM in a time series in the same cycle as the GPS information reception cycle.
When the ECU 27 records one GPS position information in the RAM, the estimated distance calculated by the ECU 27 during the GPS information reception cycle when the GPS position information is received by the GPS receiving antenna 30 and the wireless communication The beacon ID signal and the reference intensity signal received by the antenna 29 are recorded in the RAM as a set with the GPS position information. As described above, the GPS information reception cycle is longer than the beacon transmission information reception cycle, and a plurality of beacon transmission information reception cycles elapse while one GPS information reception cycle elapses. Therefore, one GPS position information, a plurality of estimated distances, a plurality of reference intensity signals, and a plurality of beacon ID signals are recorded in the RAM as one set. For example, when the GPS information reception cycle is 1 second and the beacon transmission information reception cycle is 100 milliseconds, one GPS position information, 10 estimated distances, 10 reference intensity signals, and 10 beacon ID signals. Is recorded in the RAM as one set. Hereinafter, this one set will be referred to as an "estimated distance and GPS information set".

Further, the wireless communication antenna 29 together with the GPS position information (or estimated distance and GPS information set) and the terminal ID signal as one set to the information processing device 16 of the data center 15 based on the command from the ECU 27. For example, it is repeatedly transmitted in a predetermined cycle (for example, 1 second) which is the same as the GPS information reception cycle.

The information processing device 16 receives GPS position information (or estimated distance and GPS information set) and terminal ID signals from a plurality of smartphones 25 for each center reception cycle having the same length as the GPS information reception cycle, and receives GPS position information (or an estimated distance and GPS information set). , GPS position information (or estimated distance and GPS information set) and terminal ID signal are recorded in the RAM in a predetermined cycle (for example, the same cycle as the center reception cycle).
When the estimated distance and the GPS information set are received from each smartphone 25, the information processing device 16 receives the estimated distance and the GPS information set, and based on the information regarding the plurality of estimated distances, the information processing device 16 performs the current position of the beacon 20 (pedestrians P1, P2) corresponding to the received beacon ID signal. Is estimated according to the following principle.

For example, when the estimated distance and GPS information set are received together with the corresponding terminal ID signals from only two smartphones 25 (25-1, 25-2) in one center reception cycle, the information processing device 16 is shown in FIG. The range estimated to include the current position of the beacon 20 is obtained based on the principle shown in 1.
That is, the information processing device 16 has an annular band C1 centered on the smartphone 25-1 and having the upper limit value of the estimated distance L1 (far region) calculated by the smartphone 25-1 as the outer diameter and the lower limit value as the inner diameter, and the smartphone. A tentative estimation region A-2 that overlaps with the annular band C2 centered on 25-2 and having the upper limit value of the estimated distance L2 (far region) calculated by the smartphone 25-2 as the outer diameter and the lower limit value as the inner diameter is obtained. .. This tentative estimation area A-2 is a range estimated to include the current position of the beacon 20. For example, when the estimated distance L1 is an intermediate region, the region where the circle C1 whose radius is the upper limit of the estimated distance L1 and the annular band C2 overlap is the tentative estimation region A-2.

The one estimated distance and the GPS information set received by the information processing device 16 from the smartphones 25-1 and 25-2 usually include a plurality of estimated distances. Therefore, when the information processing device 16 receives one estimated distance and GPS information set from each of the smartphones 25-1 and 25-2, it usually calculates four or more provisional estimation areas A-2.
These tentative estimation areas A-2 are calculated based on the radio signals of the same radio wave strength transmitted by the beacon 20. Therefore, the shapes of these tentative estimation regions A-2 are almost the same as each other.

Further, when the estimated distance and the GPS information set are received from the three smartphones 25 (25-1, 25-2, 25-3) together with the corresponding terminal ID signals in one center reception cycle, the information processing device 16 Finds the range estimated to include the current position of the beacon 20 based on the principle shown in FIG.
That is, the information processing device 16 has the annular band C1, the annular band C2, and the smartphone 25-3 as the center, and the upper limit value of the estimated distance L3 calculated by the smartphone 25-3 is the outer diameter and the lower limit value is the inner diameter. A tentative estimation region A-3 that overlaps with the annular zone C3 (near region) is obtained. This tentative estimation area A-3 is a range estimated to include the current position of the beacon 20.
Since the tentative estimation area A-3 is an area based on three estimated distances, it is highly possible that the current position of the beacon 20 is represented more accurately than the tentative estimation area A-2.
Also in this case as well, since the normal information processing device 16 receives a plurality of estimated distances from the three smartphones 25 in each center reception cycle, the information processing device 16 usually receives six or more provisional estimation areas A- for each center reception cycle. Find 3.

When the information processing device 16 receives the estimated distance and the GPS information set from four or more smartphones 25 together with the corresponding terminal ID signal in one center reception cycle, the information processing device 16 receives the four smartphones 25. Based on the estimated distance received from and the GPS information set, the areas corresponding to the provisional estimation areas A-2 and A-3 are obtained.
The greater the number of smartphones 25 that transmit the estimated distance and GPS information set to the information processing device 16, the more accurately the information processing device 16 determines the range estimated to include the current position of the beacon 20. It becomes possible.

Further, when at least one of the estimated distances transmitted by each smartphone 25 to the information processing device 16 is a "near area" or a "far area", the tentative estimation area is a large area. In particular, when one of the estimated distances is the "far region", the tentative estimation region may become an extremely large region. In other words, in these cases, the tentative estimation region is likely to represent a region that is (significantly) wider than a single grid. Therefore, in these cases, it is inappropriate to treat this tentative estimation area as the current position of the beacon 20 (pedestrian P1).
Therefore, the information processing device 16 executes the following filtering process on the obtained tentative estimation area.

FIG. 5 shows a tentative estimation area A of the beacon 20 possessed by one pedestrian P1.
This tentative estimation area A overlaps with a part of the river LV and a part of the building BL.
However, it is unlikely that the pedestrian P1 is in the river LV. Further, it is considered unlikely that the pedestrian P1 is in the building BL at an address different from the address of the pedestrian P1 represented by the beacon ID signal of the beacon 20.
Therefore, the information processing apparatus 16 calculates the post-exclusion region A-e in which the region overlapping the river LV and the building BL in the provisional estimation region A is excluded from the provisional estimation region A. The excluded region A-e is a region shown by hatching in FIG.
The filtering process by the information processing device 16 is executed in this way.

Further, the information processing device 16 calculates the estimated position A-C, which is the central position of the excluded area A-e. That is, the information processing device 16 treats the calculated estimated positions A and C as the current positions of the pedestrian P1 (beacon 20).
Then, as shown in FIG. 5, the information processing device 16 associates each beacon 20 estimated position AC with the beacon ID signal and displays it on one grid on the display 18.

The information processing device 16 repeatedly executes the calculation work of the estimated positions AC in the same cycle as, for example, the center reception cycle. Further, the information processing device 16 records the calculated estimated positions A and C in the RAM in a time series in the same cycle as the center reception cycle.
Then, the display 18 repeatedly displays the estimated positions AC of the pedestrians P1 and P2 in the same cycle as, for example, the center reception cycle. That is, when the pedestrians P1 and P2 move, the positions of the pedestrians P1 and P2 on the map image change.

Further, the information processing device 16 superimposes and displays the position based on the GPS position information (target moving body position information) of the smartphone 25 corresponding to the received terminal ID signal on the map image of the dynamic map DM. That is, the position of the corresponding smartphone 25 is displayed superimposed on the position represented by the GPS position information on the map image.

In the ROM of the information processing device 16 of the data center 15, information such as the name, age, address, and the vehicle 50 owned by the owner of each smartphone 25 is recorded in association with the terminal ID signal.
Therefore, in FIG. 5, instead of the position of the smartphone 25, the positions of the vehicles 50A, 50B, 50C, 50D, 50E, 50F, and 50G that move together with the smartphone 25 are displayed.

Furthermore, the actual positions of each vehicle 50A, 50B, 50C, 50D, 50E, 50F, 50G may change over time. Since the information processing device 16 receives GPS position information from each smartphone 25 in chronological order together with the terminal ID signal, when the vehicles 50A, 50B, 50C, 50D, 50E, 50F, and 50G move with the passage of time, a map is displayed. The positions of the vehicles 50A, 50B, 50C, 50D, 50E, 50F, and 50G on the image change.

Further, the information processing device 16 of the data center 15 provides "warning information" to the smartphone 25 according to the positional relationship between each vehicle 50, the accident-prone area DA1, the accident-prone area DA2, and the 30 km / h zone 30Z. Send. For example, when the distance between the smartphone 25 (vehicle 50) and the accident-prone areas DA1, DA2, or the 30 km / h zone 30Z is less than or equal to a predetermined distance, the information processing device 16 sets the smartphone 25 that satisfies this condition. "Caution information" is sent.

For example, in the state shown in FIG. 5, if the distances from the vehicles 50A and 50B to the accident-prone areas DA1, DA2 and the 30 km / h zone 30Z are all longer than the predetermined distances, the map data and the map data which are the basis of the map image The information processing device 16 determines based on the GPS position information of the smartphones 25A and 25B that move together with the vehicles 50A and 50B, respectively.
Therefore, at this time, the information processing device 16 does not transmit the alert information to the smartphones 25A and 25B.

On the other hand, in the state shown in FIG. 5, the distances from the vehicles 50C, 50D, 50E, 50F, 50G to the accident-prone areas DA1, DA2 and / or the 30 km / h zone 30Z are all equal to or less than the predetermined distance. Then, based on the map data and the GPS position information of the smartphones 25C, 25D, 25E, 25F, and 25G, the information processing device 16 extends from these smartphones 25 to the accident-prone areas DA1, DA2 and / or 30 km / h zone 30Z. It is determined that the distances are all equal to or less than the predetermined distance.
Therefore, at this time, the information processing device 16 transmits the alert information to the smartphones 25C, 25D, 25E, 25F, and 25G.

Upon receiving the alert information, the ECU 27 of the smartphones 25C, 25D, 25E, 25F, 25G uses the vehicle 50C, 50D, which moves the alert information together with the smartphone 25, based on the instruction of the traffic information display application. Determine if it is useful for 50E, 50F, 50G.
Specifically, the ECU 27 of the smartphones 25C, 25D, 25E, 25F, and 25G determines whether or not the received alert information is useful based on at least one of the behavior information and the peripheral moving body information.
Here, the behavior information is information on the behavior of the vehicle 50 that moves together with the smartphone 25. That is, it is information on the speed, acceleration, traveling direction (position information of the blinker), and the like of the vehicle 50.
On the other hand, the peripheral moving body information is the position information of the pedestrians P1 and P2.

For example, at this time, the distance between the vehicle 50C and the accident-prone area DA1 is not more than a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the accident-prone area DA1" to the smartphone 25C.
At this time, the ECU 27 of the smartphone 25C receives the radio signal transmitted by the beacon 20 possessed by the pedestrian P2 on the sidewalk of the road R1 to obtain the estimated distance (peripheral moving body information) from the vehicle 50C to the beacon 20. Calculate. As a result, the ECU 27 recognizes that "there is a possibility that there is a pedestrian in the vicinity of the accident-prone area DA1".
Therefore, in this case, the ECU 27 of the smartphone 25C determines that "this arousal information is useful" based on the peripheral moving body information.
In this case, the smartphone 25C wirelessly transmits an operation signal to the transmission / reception means 53 of the vehicle 50C. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50C are activated. When the alarm device 54 is activated, the alarm device 54 gives a voice warning to the driver of the vehicle 50C that the vehicle is approaching the accident-prone area DA1. When the brake device 55 is activated, the brake device of the vehicle 50C automatically applies a braking force to each wheel even when the driver does not step on the brake pedal of the vehicle 50C. Therefore, the vehicle 50C is gradually decelerated.

At this time, the distance between the vehicle 50D and the accident-prone area DA1 is less than or equal to a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the accident-prone area DA1" to the smartphone 25D.
At this time, the ECU 27 of the smartphone 25D acquires information (behavior information) regarding the position of the winker (not shown) of the vehicle 50D from the transmission / reception means 53 of the vehicle 50D by wireless communication. That is, the ECU 27 of the smartphone 25D acquires information on whether the blinker is located at the initial position, the left turn position, or the right turn position. Then, at this time, the ECU 27 acquires the information that "the blinker is in the initial position" from the transmission / reception means 53. That is, at this time, since the vehicle 50D goes straight on the road R1, there is no possibility of entering the accident-prone area DA1.
Therefore, at this time, if the information processing device 16 transmits the warning information "approaching the accident-prone area DA1" to the smartphone 25D, this warning information is not useful for the smartphone 25D (vehicle 50D). Absent. Therefore, the ECU 27 of the smartphone 25D determines that "this arousal information is not useful" based on the behavior information of the vehicle 50D.
In this case, the smartphone 25D does not wirelessly transmit the operation signal to the transmission / reception means 53 of the vehicle 50D. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50D do not operate.

At this time, the distance between the vehicle 50E and the accident-prone area DA2 is less than or equal to a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the accident-prone area DA2" to the smartphone 25E.
At this time, the ECU 27 of the smartphone 25E acquires information (behavior information) regarding the speed and acceleration of the vehicle 50E from the transmission / reception means 53 of the vehicle 50E. As a result, the ECU 27 of the smartphone 25E determines that "when the vehicle 50E enters the accident-prone area DA2 at this speed and acceleration, the vehicle 50E is unlikely to cause a traffic accident in the accident-prone area DA2." In other words, the ECU 27 of the smartphone 25E determines that "this arousal information is not useful".
In this case, the smartphone 25E does not wirelessly transmit the operation signal to the transmission / reception means 53 of the vehicle 50E. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50E do not operate.

Further, at this time, the distance between the vehicle 50E and the 30 km / h zone 30Z (road R2) is not more than a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the 30 km / h zone 30Z" to the smartphone 25E.
At this time, the ECU 27 of the smartphone 25E acquires the position information regarding the winker of the vehicle 50E from the transmission / reception means 53 of the vehicle 50E. As a result, the ECU 27 determines that "the position of the blinker is the initial position". Then, the ECU 27 determines that "the possibility that the vehicle 50E will enter the 30 km / h zone 30Z is low". In other words, the ECU 27 of the smartphone 25E determines that "this arousal information is not useful".
In this case, the smartphone 25E does not wirelessly transmit the operation signal to the transmission / reception means 53 of the vehicle 50E. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50E do not operate.

At this time, the distance between the vehicle 50F and the accident-prone area DA2 is less than or equal to a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the accident-prone area DA2" to the smartphone 25F.
At this time, the ECU 27 of the smartphone 25F acquires information (behavior information) regarding the speed and acceleration of the vehicle 50F from the transmission / reception means 53 of the vehicle 50F. As a result, the ECU 27 determines that "the speed and acceleration of the vehicle 50F are small".
Therefore, the ECU 27 of the smartphone 25F determines that "when the vehicle 50F enters the accident-prone area DA2 at this speed and acceleration, the vehicle 50F is unlikely to cause a traffic accident in the accident-prone area DA2." In other words, the ECU 27 of the smartphone 25F determines that "this arousal information is not useful".
In this case, the smartphone 25F does not wirelessly transmit the operation signal caused by this alert information to the transmission / reception means 53 of the vehicle 50F.

Further, at this time, the distance between the vehicle 50F and the 30 km / h zone 30Z (road R2) is not more than a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the 30 km / h zone 30Z" to the smartphone 25F.
At this time, the ECU 27 of the smartphone 25F acquires the position information (behavior information) regarding the winker of the vehicle 50F from the transmission / reception means 53 of the vehicle 50F. At this time, since the blinker is located at the initial position, the ECU 27 of the smartphone 25F determines that "the position of the blinker is the initial position". Then, the ECU 27 determines that "the vehicle 50F is likely to enter the 30 km / h zone 30Z".
Further, at this time, the ECU 27 of the smartphone 25F calculates the estimated distance (peripheral moving body information) from the vehicle 50F to the beacon 20 by receiving the wireless signal transmitted by the beacon 20 possessed by the pedestrian P1. Then, the ECU 27 may position the pedestrian P1 who is an elementary school student in the “30 km / h zone 30Z” based on the calculation result, the acquired beacon ID information, and the attribute information represented by each beacon ID information recorded in the ROM. Recognize that there is.
Therefore, in this case, the ECU 27 of the smartphone 25F determines that "this arousal information is useful" based on the behavior information and the peripheral moving body information.
In this case, the smartphone 25F wirelessly transmits an operation signal to the transmission / reception means 53 of the vehicle 50F. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50F are activated.

If the ECU 27 of the smartphone 25F determines that the owner of the beacon 20 transmitting the received radio waves is an adult, the ECU 27 of the smartphone 25F wirelessly transmits an operation signal to the transmission / reception means 53 of the vehicle 50F. do not.

At this time, the distance between the vehicle 50G and the accident-prone area DA2 is less than or equal to a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the accident-prone area DA2" to the smartphone 25G.
At this time, the ECU 27 of the smartphone 25G acquires information (behavior information) regarding the speed and acceleration of the vehicle 50G from the transmission / reception means 53 of the vehicle 50G. As a result, the ECU 27 of the smartphone 25G determines that "the speed and acceleration of the vehicle 50G are large". As a result, the ECU 27 of the smartphone 25G determines that "when the vehicle 50G enters the accident-prone area DA2 at this speed and acceleration, there is a high possibility that the vehicle 50G will cause a traffic accident in the accident-prone area DA2." In other words, the ECU 27 of the smartphone 25G determines that "this arousal information is useful".
In this case, the smartphone 25G wirelessly transmits an operation signal to the transmission / reception means 53 of the vehicle 50G. Therefore, the alarm device 54 and the brake device 55 of the vehicle 50G are activated.

Further, at this time, the distance between the vehicle 50G and the 30 km / h zone 30Z (road R2) is not more than a predetermined distance. Therefore, the information processing device 16 transmits the warning information of "approaching the 30 km / h zone 30Z" to the smartphone 25G.
At this time, the ECU 27 of the smartphone 25G acquires the position information (behavior information) regarding the winker of the vehicle 50G from the transmission / reception means 53 of the vehicle 50G. As a result, the ECU 27 of the smartphone 25G determines that "the position of the blinker is the right turn position". Then, the ECU 27 of the smartphone 25G determines that "the possibility that the vehicle 50G will enter the 30km / h zone 30Z is low". In other words, the ECU 27 determines that "this arousal information is not useful".
In this case, the smartphone 25G does not wirelessly transmit the operation signal caused by this alert information to the transmission / reception means 53 of the vehicle 50G.

Each smartphone 25 that has acquired the alert information from the information processing device 16 in this way determines the usefulness of the alert information based on at least one of the behavior information and the peripheral moving object information acquired from the vehicle 50 that moves together. .. Then, each smartphone 25 switches the mode of the alert activation operation of the alert means (alarm device 54 and brake device 55) depending on whether or not it is useful. That is, when it is determined that the alert information is useful, each smartphone 25 operates the alert means, while when it is determined that the alert information is not useful, each smartphone 25 does not operate the alert means. ..
Therefore, it is possible to prevent an alert activation operation that does not require an alert means.

Further, when each smartphone 25 determines the usefulness of the alert information based on the information received from the information processing device 16, the information processing device 16 determines whether or not it is useful and completes the process of transmitting the alert information. In the meantime, the vehicle 50 moving together with the smartphone 25 may move several tens of meters or more. Therefore, in this case, the smartphone 25 may not be able to receive the warning information before the vehicle 50 enters the accident-prone areas DA1, DA2, and the 30 km / h zone 30Z.
However, the smartphone 25 of the present embodiment determines the usefulness of the alert information based on the behavior information and the peripheral moving body information acquired from the vehicle 50 moving together.
Therefore, before the vehicle 50 enters the accident-prone areas DA1, DA2 and the 30 km / h zone 30Z, the smartphone 25 can receive the alert information from the information processing device 16 and determine the usefulness of the alert information.

The ECU 27 of each smartphone 25 may determine the usefulness of the arousal information based on information different from the behavior information and the peripheral moving body information. For example, the ECU 27 of each smartphone 25 may determine the usefulness of the alert information based on at least one of the current time and weather information.

For example, the smartphone 25 that has received the warning information that the information processing device 16 is approaching the 30 km / h zone 30Z has the current time acquired from the smartphone 25 itself or the time acquisition means (clock) of the vehicle 50. The usefulness of this alert information can be determined based on the information about. For example, when the current time is included in the school attendance time of the elementary school, the smartphone 25 determines that this alert information is useful. On the other hand, if the current time is not included in the elementary school attendance time, the smartphone 25 determines that this alert information is not useful.

For example, the smartphone 25 that has received the warning information that the information processing device 16 is approaching the accident-prone area DA1 relates to the current time acquired from the smartphone 25 itself or the time acquisition means (clock) of the vehicle 50. Based on the information, the usefulness of this alert information can be determined. For example, if the current time is midnight, it is presumed that it is unlikely that there are pedestrians and bicycles moving on the sidewalk of road R1. Therefore, in this case, the smartphone 25 determines that this alert information is not useful.

Further, for example, the smartphone 25 that has received the warning information that the information processing device 16 is approaching the accident-prone area DA1 may transmit the weather information acquisition means (for example, from the outside) of the smartphone 25 itself or the vehicle 50. It is possible to determine the usefulness of this alert information based on the current weather information acquired from the means for acquiring the weather information obtained by wireless communication). For example, if the current weather in the vicinity of the accident-prone area DA1 is fine, it is highly possible that the driver of the vehicle 50 can reliably recognize the positions of pedestrians, vehicles, and the like in the vicinity of the accident-prone area DA1. That is, in this case, the possibility that the vehicle 50 causes a traffic accident in the accident-prone area DA1 is not high. Therefore, in this case, the smartphone 25 determines that this alert information is not useful. On the other hand, if the current weather near the accident-prone area DA1 is rainy, the driver of the vehicle 50 may not be able to reliably recognize the positions of pedestrians, vehicles, etc. near the accident-prone area DA1. That is, in this case, the possibility that the vehicle 50 will cause a traffic accident in the accident-prone area DA1 is higher than in the fine weather. Therefore, in this case, the smartphone 25 determines that this alert information is useful.

Subsequently, specific operations executed by the beacon 20, the ECU 27 of each smartphone 25, the ECU 27 of the smartphone 25, and the information processing device 16 of the data center 15 will be described with reference to the flowcharts of FIGS. 8 to 11.

The IC chip 22 of the beacon 20 repeatedly executes the routine shown in the flowchart of FIG. 8 every time a predetermined time elapses.

The IC chip 22 first generates a beacon ID signal in step 801.
Further, the IC chip 22 proceeds to step 802 to generate a reference intensity signal.
Further, the IC chip 22 proceeds to step 803, and transmits the beacon ID signal and the reference intensity signal as one set from the antenna 24 together with the radio signal (radio wave) to the outside.
The IC chip 22 that has completed the process of step 803 temporarily ends this routine.

The ECU 27 of the smartphone 25 repeatedly executes the process of the flowchart shown in FIG. 9 every time a predetermined time elapses.

In step 901, the ECU 27 determines whether or not the wireless communication antenna 29 has received the beacon ID signal and the reference intensity signal from the beacon 20.

If it is determined to be Yes in step 901, the ECU 27 proceeds to step 902, and the beacon corresponding to the beacon ID signal received from the smartphone 25 is based on the actual strength and the reference strength signal of the radio signal received from the beacon 20 by the antenna 24. Calculate the estimated distance up to 20.

After completing the process of step 902, the ECU 27 proceeds to step 903 and records the beacon ID signal, the reference intensity signal, and the estimated distance together in the RAM.

After completing the process of step 903, the ECU 27 proceeds to step 904 and determines whether or not the GPS receiving antenna 30 is receiving the GPS position signal.
If No is determined in step 904, the ECU 27 temporarily ends this routine.

If it is determined to be Yes in step 904, the ECU 27 proceeds to step 905 and generates a terminal ID signal.

The ECU 27 that has completed the process of step 905 proceeds to step 906 and controls the wireless communication antenna 29. As a result, the estimated distance and GPS information set (or GPS position information) recorded (stored) in the RAM from the previous reception of the GPS position signal to the reception of the GPS position signal in step 904 of this routine, and , The terminal ID signal is transmitted from the wireless communication antenna 29.
The ECU 27 that has completed the process of step 906 temporarily ends this routine.

The information processing device 16 of the data center 15 repeatedly executes the process of the flowchart shown in FIG. 10 every time a predetermined time elapses.

In step 1001, the information processing device 16 determines whether or not the estimated distance, the GPS information set, and the terminal ID signal have been received from the plurality of smartphones 25.

If it is determined to be Yes in step 1001, the information processing apparatus 16 proceeds to step 1002 and obtains the estimated positions AC of the beacon 20 according to the above procedure.

The information processing apparatus 16 that has completed the process of step 1002 proceeds to step 1003 to display the estimated positions AC on the map image on the display 18.

The information processing apparatus 16 that has completed the process of step 1003 proceeds to step 1004 and determines whether or not the estimated distance, the GPS information set, and the terminal ID signal have been received from at least one smartphone 25.
If No is determined in step 1004, the information processing apparatus 16 temporarily terminates this routine.

If it is determined to be Yes in step 1004, the information processing apparatus 16 proceeds to step 1005 and records the estimated distance, the GPS information set, and the terminal ID signal in the RAM.
Further, the information processing device 16 displays the position of the smartphone 25 based on the GPS position information on the map image.

The information processing device 16 that has completed the process of step 1005 proceeds to step 1006 and determines whether or not the distance from the smartphone 25 that has transmitted the GPS position information to the attention-calling recommended area is equal to or less than a predetermined distance.
If No is determined in step 1006, the information processing device 16 temporarily terminates this routine.

If it is determined to be Yes in step 1006, the information processing device 16 proceeds to step 1007 and transmits the alert information to the smartphone 25 that has transmitted the GPS position information.
The information processing device 16 that has completed the process of step 1007 temporarily ends this routine.

Further, the ECU 27 of the smartphone 25 repeatedly executes the process of the flowchart shown in FIG. 11 every time a predetermined time elapses.

In step 1101, the ECU 27 determines whether or not the attention alert information has been received from the information processing device 16.
If No is determined in step 1101, the ECU 27 temporarily terminates this routine.

If it is determined to be Yes in step 1101, the ECU 27 proceeds to step 1102 and determines whether the received alert information is useful by judging from the behavior information, the peripheral moving body information, the time information, and / or the weather information.
If it is determined as No in step 1102, the ECU 27 temporarily ends this routine.

If it is determined to be Yes in step 1102, the process proceeds to step 1103, and the ECU 27 operates the alarm device 54 and the brake device 55 of the vehicle 50 by transmitting an operation signal from the wireless communication antenna 29 to the transmission / reception means 53.
The ECU 27 that has completed the process of step 1103 temporarily ends this routine.

The present invention is not limited to the above embodiments, and various modifications can be adopted within the scope of the present invention.

The standard of radio waves generated and transmitted by the beacon 20 is not limited to Bluetooth Low Energy. For example, the standard for this radio wave may be Bluetooth®.

The information terminal is not limited to the smartphone 25. For example, a tablet computer and a notebook personal computer can be used as an information terminal.

The information terminal (eg, smartphone 25) may include an antenna capable of receiving information from satellites of a global navigation satellite system (eg, Galileo) other than GPS.

Information installed in the area represented by the map image of the dynamic map DM as an information terminal that calculates the estimated distance to the beacon 20 based on the radio signal transmitted by the beacon 20 and transmits information on the estimated distance to the information processing device 16. A terminal may be used.

The types of moving objects that move together with the beacon 20 are not limited to pedestrians P1 and P2. For example, the moving body that moves with the beacon 20 may be a bicycle.

Further, the information terminal (for example, the smartphone 25) may move together with the pedestrian.

Further, an information terminal (for example, an information terminal having a car navigation function) fixed to a vehicle (for example, an automobile or a motorcycle) may be used as an information terminal.

When the vehicle 50 is equipped with a camera, information on the distance to the obstacle taken by the camera and / or the attribute of the obstacle (for example, whether or not it is a human being) (for example, using pattern matching or the like). The terminal side may make a judgment, and the information terminal may judge the usefulness of the alert information according to the judgment result.
For example, when the information terminal receives the warning information that the 30 km / h zone 30Z is nearby from the information processing device 16, and determines that the shooting data of the camera includes a child, this caution is given. The arousal information may be determined to be useful.

The information processing device 16 provides the positional relationship between each vehicle 50 (information terminal) and the recommended area for alerting (accident-prone areas DA1, DA2 and 30 km / h zone 30Z), as well as the position information and attributes of peripheral moving objects. Based on the above, it may be determined whether or not to transmit the alert information to the information terminal (for example, the smartphone 25).

An information terminal (for example, a smartphone 25) may be provided with a warning means.
For example, the smartphone 25 may be provided with an alarm device as a warning means.

When the information terminal (for example, the smartphone 25) receives the alert information, the alert means may be operated regardless of whether or not the alert information is determined to be useful. However, in this case, the information terminal changes the operation mode of the alerting means depending on whether or not the alerting information is useful. That is, when it is determined that the alerting information is useful, the alerting means is operated in the first aspect, while when it is determined that the alerting information is not useful, the alerting means is different from the first aspect. It operates in two modes.
For example, the information terminal operates the alarm device 54 and the brake device 55 of the vehicle 50 when it is determined that the alert information is useful, and when it is determined that the alert information is not useful, the alarm device 54 and the brake device Only the alarm device 54 out of 55 may be operated.

10 ... Traffic support system, 15 ... Data center, 16 ... Information processing device (judgment means) (Target moving body position information acquisition means) (Transmission means), 20 ... Beacon, 25 ... Smartphone (information terminal) (time acquisition means) (weather information acquisition means), 27 ... ECU (usefulness determination means) (switching means), 29 ... wireless communication antenna (terminal side receiving means) (behavior information) Acquisition means) (peripheral moving body information acquisition means), 50 ... vehicle (target moving body), 52 ... ECU, 53 ... transmission / reception means, 54 ... alarm device (warning means), 55.・ ・ Brake device (warning means), 30Z ・ ・ ・ 30km / h zone (recommended warning area), DA1, DA2 ・ ・ ・ Accident-prone area (recommended warning area), P1, P2 ・ ・ ・ Pedestrians (recommended warning area) Peripheral moving body).

Claims (5)

An information terminal that can move with the target moving object, which is a vehicle,
Map information representing the place where the information terminal is located and the area including the surrounding area, and the recommended area for calling attention to the target moving object that is a part of the area and is about to enter. An information processing device that has information on recommended areas to call attention,
It is a traffic support system equipped with
The information processing device
A target moving body position information acquisition means capable of acquiring the target moving body position information which is the position of the target moving body, and
Based on the target vehicle location information and the alert recommendation region information the subject vehicle location information acquisition unit acquires the position of the front Symbol target mobile the target mobile is in the outside of the reminder recommended area A determination means for determining whether or not to transmit the alert information to the information terminal by determining whether or not the distance from the to the recommended alert area is equal to or less than a predetermined distance.
When it is determined that the distance from the position of the target moving object to the caution recommended area is equal to or less than the predetermined distance, the transmission means for transmitting the caution information to the information terminal and the transmission means.
With
The information terminal
A terminal-side receiving means capable of receiving the warning information transmitted from the transmitting means, and
An information on the behavior of the vehicle which is the target mobile indicates the traveling direction of the vehicle, whether blinker of the vehicle is located in any of the initial position location and left Orii location and right Orii location Behavior information acquisition means for acquiring position information related to blinkers and behavior information including
Peripheral mobile information acquisition means for acquiring peripheral mobile information which is information about the peripheral mobile including the position of the peripheral mobile which is different from the target mobile.
When the terminal-side receiving means receives the warning information, the warning information received by the terminal-side receiving means is useful for the target moving body by using the behavior information and the peripheral moving body information. Usefulness determination means to determine whether or not
A switching means for switching the mode of the alert activation operation based on the alert information by the alert means based on the determination result of the usefulness determination means, and
With
The usefulness determination means, wherein the alert information when the vehicle based on the behavior information including the position information on the traveling direction and the front Symbol blinker of the vehicle is determined to not enter the reminder recommended area the Configured to determine that it is not useful for the target moving object,
Traffic support system. In the traffic support system according to claim 1,
The information terminal
Equipped with a time acquisition means to acquire the time
The usefulness determination means
It is configured to determine the usefulness of the alert information received by the terminal-side receiving means based on the time.
Traffic support system. In the traffic support system according to claim 2,
The information terminal
A weather information acquisition means for acquiring weather information around the target moving object is provided.
The usefulness determination means
It is configured to determine the usefulness of the alert information received by the terminal-side receiving means based on the weather information.
Traffic support system. In the traffic support system according to any one of claims 1 to 3,
The switching means
The alerting means is configured to switch between a first state in which the alerting activation operation is executed and a second state in which the alerting activation operation is not executed.
Traffic support system. A traffic support system according to any one of claims 1乃Itaru 3,
The switching means
Depending on the content of the alert activation operation, the alert activation means is used in a first state in which the alert activation operation is executed in the first aspect and in a second mode different from the first aspect. It was configured to switch to the second state, which runs
Traffic support system.

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