JPH11339174A - Method for presenting automobile running condition, method for searching and presenting optimum route, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the processing time and to make acquiring of data easy by calculating the speed in every direction of roads in a mesh through statistic processing by utilizing on-vehicle data. SOLUTION: An on-vehicle data recording part 1 is mounted on many automobiles and when each information recorded on the part 1 is supplied to a speed result information acquiring part 2, a traveling direction is discriminated for every position and speed results information 2a is produced by combining it with a speed at this time. A statistic speed operating part every direction 3a of mesh correspondence of a processing part 3 divides road map data 4 in a mesh shape by using mesh graphic data 5 and extracts speed information for every direction of automobiles located in each mesh from the information 2a as well. The calculated statistic speed for every direction of each mesh is supplied to a speed displaying part for every direction 3b of mesh correspondence, data of a form corresponding to a speed for every direction is set in each mesh and the speed for every direction is shown together with a road map divided by meshes on a display part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for presenting a vehicle operating condition using on-vehicle data, a method for searching for and presenting an optimum route, and a recording medium.

In recent years, vehicles such as trucks for transporting large and small luggage have become the core of physical distribution, and it is important for the industry related to physical distribution, especially for companies that transport vehicles to operate these vehicles efficiently. It has become a theme. In other words, when carrying luggage to a destination via various roads, it is convenient to know which road from the current location to the destination can be reached as soon as possible. I don't know what to do, so it is awaited.

[0003]

2. Description of the Related Art In a transportation company, when transporting luggage by car, each driver may voluntarily select a route. However, a manager considers traffic volume in advance according to the destination. There is a method of instructing the created route to the driver.

[0004] In recent years, road traffic information has been provided by various organizations.
A route that avoids congestion may be selected at any time. Furthermore,
Some vehicles are equipped with GPS (Global Positioning System), and the number of users who check the current position using a navigation system linked to the GPS (latitude and longitude information) and select (guide) the direction to the target position is increasing. ing.

However, in general, when various routes exist from a certain starting point to a destination in an area having a relatively large traffic volume, the operation manager or the driver has a relatively long driving experience or can. In many cases, a route where a car is expected to move smoothly is specified or selected.

[0006]

SUMMARY OF THE INVENTION In the above-mentioned conventional transportation companies, even if the operation manager and the driver have abundant experience,
The flow of a real car is constantly changing, and according to experience, it often differs from the actual situation, and how long it takes to drive a car from a starting point to a destination by using which route, In other words, it was not possible to grasp how fast the vehicle could run (how long it could reach the destination).

[0007] In addition, an organization that provides road information informs various situations such as traffic congestion time and occurrence of accidents by broadcasting or telephone, but the information is limited to major national roads, intersections, and highways. Therefore, information such as the degree of congestion on general roads (national roads, prefectural roads, city roads, etc.) is not provided, so if these general roads are included in the destination route, how fast will they be? I couldn't predict if I could run.

[0008] Further, since position information of data (called on-vehicle data) obtained by a vehicle equipped with GPS does not include link information with road map data, it takes processing time to specify an individual road section. In addition, there is a problem that the specified road does not always coincide with the actually driven road due to the accuracy of the GPS and the road map.

According to the present invention, when a vehicle is driven from a departure point to a destination, a vehicle capable of presenting vehicle speed information on a road for each region in order to select a route that can be operated efficiently. Another object of the present invention is to provide a method for searching for and presenting an optimum route of a vehicle and to provide a recording medium.

[0010]

FIG. 1 shows the principle of the present invention. In the figure, reference numeral 1 denotes an in-vehicle data recording unit provided in a vehicle equipped with a GPS, 1a to 1d represent examples of data collected as in-vehicle data, 1a denotes a position of the vehicle (latitude and longitude obtained by GPS), 1b is speed, 1c is date and time, 1d
Is information of each road type. Reference numeral 2 denotes an actual speed information acquisition unit for detecting the direction and speed of the vehicle at each position (latitude and longitude) by collecting and analyzing a large number of in-vehicle data;
a is actual speed information, 3 is a processing unit, 3a is a statistical speed calculation unit for each direction corresponding to a mesh, 3b is a speed display unit for each direction corresponding to a mesh, 3c is a road type corresponding unit, 4 is road map data, and 5 is a Reference numeral 6 denotes a display section of mesh graphic data composed of a large number of rectangular figures having a determined length.

According to the present invention, on-vehicle data recording unit 1 is mounted on a large number of vehicles that are actually traveling on roads in each area, and information such as speed corresponding to GPS position and road type is transmitted as on-vehicle data at a constant period. Recording is performed every time (for example, every 10 seconds) or when a change (a change in direction or the like) occurs. When the information recorded in the on-vehicle data recording unit 1 by a large number of vehicles is supplied to the actual speed information acquisition unit 2, the traveling direction is identified for each position, and the speed and the speed at that time are identified. The actual speed information 2a is generated in combination. The actual speed information 2a is supplied to the processing unit 3. The direction-specific statistical speed calculation unit 3a corresponding to the mesh of the processing unit 3 divides the road map data 4 into a mesh shape using the graphic data 5 of the mesh, and also obtains speed information for each direction of the vehicle located in each mesh. From the actual speed information 2a. At this time, it is determined which direction is included as the direction, the speed information is extracted, and a statistical value of the speed (such as an average speed) is obtained.

The obtained statistical speed of each mesh in each direction is supplied to a direction-specific speed display section 3b corresponding to the mesh, where the form (color and shape) corresponding to the speed in each direction in each mesh is provided. Is set, and the speed for each direction is displayed on the display unit 6 together with the road map divided by the mesh.

Further, by driving the road type corresponding section 3c, the statistical speed for each direction corresponding to the road type in each mesh can be calculated and displayed. Further, the calculation and display of the statistical speed in each mesh by the processing unit 3 is performed by selecting and displaying only the data corresponding to the designated time or day of the week, such as by time or by day of the week. A specific speed corresponding to a day of the week or the like can be displayed.

[0014] By observing the statistical speed in each direction when passing through a road in each area obtained by dividing the map displayed on the display unit 6 by a mesh, it is possible to select a route having a high speed from the starting point to the destination. it can. When the speed data for each road section in the mesh is obtained using the principle of FIG. 1, the Dijkstra method, which is a known algorithm, is used to determine the optimal route from the starting value to the target value while referring to the data. Can be calculated by

According to the present invention, the operation status of the vehicle is presented in the processing unit 3 shown in FIG. 1 by using the speed actual information 2a, the road map data 4, and the mesh figure data 5 in the direction-specific statistical speed calculation unit 3a corresponding to the mesh. The function of the direction-specific speed display unit 3b corresponding to the mesh can be realized by processing the program, and the computer can be configured as a computer-readable recording medium storing such a program. Further, according to this principle, a computer-readable recording medium storing a program for realizing a method of presenting an optimum route by a method of searching for an optimum route based on speed data for each road section can be configured.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 is a diagram showing a configuration for creating actual speed information data from on-vehicle data. In FIG. 2, reference numeral 1 denotes an in-vehicle data recording unit mounted on a vehicle, and 10 denotes G
PS receiver, 11 a vehicle speed sensor, 12 a recording unit, 13 a road type setting unit, 3 an information processing device (including a CPU and a memory, corresponding to 3 in FIG. 1), and 3d to 3f information processing devices 3 3d indicates a vehicle information acquisition unit, 3e indicates a traveling direction calculation unit, 3f indicates a speed actual information output unit, and 2 indicates output speed actual information.

A vehicle-mounted data recording unit 1 including at least a GPS receiver 10, a vehicle speed sensor 11, and a recording unit 12 in various types of vehicles such as trucks and passenger vehicles equipped with GPS is conventionally known. In response, a road type setting unit 13 is provided.
The type of the road on which the driver is traveling is set by the driver. However, the type may be, for example, a distinction between a highway (including a toll road) and a general road, and nothing is set when the vehicle runs on a general road. In addition, time information (year, month, day, hour, minute, etc.) is naturally recorded using the built-in clock for each recording operation.

The in-vehicle data recording unit 1 stores the current position in the recording unit 12 at regular time intervals while the vehicle is running.
, The vehicle speed at that time is obtained from the vehicle speed sensor 11, and the road type information from the road type setting unit 13 is recorded as additional data. When the contents of the recording unit 12 in the on-vehicle data recording unit 1 of many vehicles are input to the information processing device 3, the vehicle information acquisition unit 3d retrieves the on-vehicle data, and the traveling direction calculation unit 3e outputs each position (GPS data). Judgment from data)
The traveling direction of the vehicle at is calculated. Next, the calculated traveling direction information and vehicle speed information are output together with the position information and the road type information. This information is stored as speed actual information 2.

FIG. 3 is a diagram for explaining the acquisition of on-vehicle data. In the figure, a solid line with an arrow represents a route on which the car actually travels. This indicates that data recording has been performed, and these positions are acquired by GPS (latitude and longitude information), and are recorded in order together with information such as speed.

FIG. 4 shows the configuration of an information processing apparatus according to the present invention. In the figure, reference numerals 2 to 6 correspond to the same reference numerals in FIG. 1, reference numeral 2 denotes actual speed information data, reference numeral 3 denotes a processing unit, and reference numeral 4 denotes a processing unit.
Is road section data including road positions (road sections) and figures, and 5 is a mesh of a predetermined distance (for example, 1 km
Mesh data representing a figure divided by four sides), 6 is a display, 7 is a keyboard, 8 is statistical speed data obtained by arithmetic processing, 9 is a recording medium such as a CD-ROM or a flexible disk which stores programs and data. is there. The processing device 3 includes a CPU, a memory storing programs and data, and can read a recording medium 9 storing a program and data for executing the processing of the present invention and load the recording medium 9 into the memory of the processing device 3. Further, such programs and data can be loaded into the processing device 3 from a recording medium of an external terminal via a communication line.

FIGS. 5 and 6 show various data structures used in the embodiment (No. 1) and (No. 2). FIG. Indicates the data configuration of the actual speed information, which is the data 2 in FIG. This data is created by the configuration of FIG. 2 described above, and each speed actual information includes the operation actual date and time, the operation actual day,
The data includes latitude, longitude, vehicle speed average, traveling direction, and road classification (road type). As a road segment, in actuality, E.E. As shown in the above, there are many types of sections such as expressway national roads, urban expressways, general national roads, major local roads, etc. In this embodiment, expressway national roads and urban expressways are classified as road types in this embodiment. 1 ”
The road type of all other roads is set to “0”.

Next, FIG. Is data of a road section, and is composed of section type (road type) and direction section information corresponding to each road section on the map (a section sandwiched by road intersections). The direction division is shown in FIG. As shown in the figure, for example, when dividing into four directions, all directions (3
60 degrees) is divided into four parts, with the north direction being 0 degrees and the direction within 45 degrees to the left and right is defined as direction section 1, and each direction divided 90 degrees clockwise is defined as direction section 2 to direction section 4 deal with. The direction segment indicates the direction from the start point to the end point of each road section.

FIG. Is a mesh figure, and shows each figure of a mesh 1 to a mesh n obtained by dividing a road map into quadrangles of a fixed longitude and latitude (for example, corresponding to an actual distance of 1 km), and the attribute of each mesh figure is shown. To represent D. Are set, and each data of mesh 1, mesh 2,... Mesh n is constituted by a mesh code uniquely representing the mesh.

FIG. 7 is a processing flow according to the first embodiment of the present invention, which is executed by the processing apparatus having the configuration shown in FIG. FIG. Is a processing flow for calculating the statistical speed. First, the attribute of the statistical speed data is determined. That is, based on the speed actual information data 2 in FIG. 4, the data (A. in FIG. 5) of each speed actual information belongs to any of the mesh data 5 (C and D in FIG. 5), What is the direction segment, and the like is determined, and the statistical speed is calculated for each direction segment by grouping by mesh code, road type, and direction segment (A1 in FIG. 7).

FIG. 8 shows the principle of calculating the statistical speed for each direction in the mesh. In this case, the average is used as statistics. FIG. Is vehicle speed data in each direction in the mesh, and the road type is a general road. This contains nine vehicle speed data. From each of these data, FIG.
The data included in the direction sections 1 to 4 (see F. in FIG. 6) when the omnidirectional directions are divided into four by the processing of FIG. ~ E. And averaged for the vehicle speed included in each direction to obtain an average speed for each direction. In this example, the average value is used as the statistical information, but various other statistical information such as a maximum frequency, a maximum value, and a minimum value can be used.

FIG. 9 shows an example of statistical speed data and a statistical speed figure. Is composed of data of the statistical speed 1 to data of the statistical speed n, and each of the statistical speed data is a mesh code, a road type, a direction classification, a statistical speed, and the actual number (the number of data used for obtaining statistics). .

Thereafter, a statistical speed figure is created (S2 in FIG. 7A). In this case, in each record of the determined statistical speed data, a speed figure (for example, an isosceles triangle) representing the direction indicated by the direction section is created inside a mesh figure having the same mesh code.

An example of this statistical speed graphic is shown in FIG. Is shown in In the figure, a to d are statistical velocity figures when the azimuth is divided into four, and each of the figures a to d is shown in FIG.
F. , And these figures are shown in FIG. Used in the processing of Note that, in FIG. The figure corresponding to each direction is created when the data of the statistical velocity exists, and is not created when the data does not exist.

FIG. In FIG. This is a process of performing display using a statistical speed graphic created corresponding to each mesh created by the above. First, the color of the statistical speed graphic is set to a color corresponding to a predetermined speed width (B. in FIG. 7).
S1), the statistical speed graphic is superimposed on the map and displayed (S2). As the color of the figure corresponding to the speed, for example, if the speed is 60 km / h or more, it is reddish, and 60 km / h to 5 km.
0 km / h is between red and yellow, 50 km / h to 40 km
/ H is a color between yellow and green, 40Km / h to 30Km / h is a color between green and blue, and 30Km / h to 20Km / h is a color such as blue. Actually, the division of speed can be subdivided, and a fine color can be expressed by a combination of R, G, and B, each of which is composed of 8 bits.

If a program corresponding to the processing flow shown in FIG. 7 is recorded on a recording medium 9 such as a CD-ROM or a flexible disk shown in FIG. The operation status of the vehicle can be displayed by processing data such as performance information.

FIG. 10 shows an example of speed display for each mesh created by the processing of FIG. A fixed longitude and road map
Divide by the mesh of latitude, 4 each for each mesh
The color is displayed in the color corresponding to the speed on the statistical speed figure of the car in the direction.

In the processing of FIG. 7, although the road type is not mentioned, the statistical speed for each direction can be calculated and displayed for different road types. Specifically, statistical speeds of two types of expressways (including toll roads) and general roads are obtained from in-vehicle data, and for a mesh including two types of roads, respective speeds can be displayed. . Further, by performing the processing of FIG. 7 for each day of the week and for each hour, it is possible to display the statistical speed of each direction corresponding to the day of the week or the time zone.

FIG. 11 shows another example of the statistical speed graphic. In this example, the statistical speed obtained from the in-vehicle data is represented by the length of a line segment, and the line segment is displayed longer in a direction with a higher speed and shorter in a direction with a lower speed.

FIG. 12 shows a second embodiment including an optimum route search.
FIG. 3 is a diagram showing the configuration of FIG. In the figure, reference numeral 2 denotes actual speed information obtained by processing on-vehicle data (information obtained from FIG. 2), 3 denotes a processing device (CPU and memory), 4 denotes road section data, and 4a denotes a section type (road). Data indicating the section length, the statistical speed, and the pointer to the connecting road point, 5 is mesh data (graphic data to which a mesh code is added), and 15 is road point data.

Here, the relationship between the road points and the road sections will be described with reference to FIG. 13. As shown in FIG. 13, the changing points of the road (the road attributes, that is, the road type, the number of lanes, the width, etc. change). Points) and intersections are road points. A section connecting the road points is referred to as a road section.

FIG. 14 shows a processing flow of the second embodiment according to the present invention, which is executed by the processing device 3 shown in FIG. First, a statistical speed in each direction for each mesh is calculated (S1 in FIG. 13). Next, road section data (4 in FIG. 12)
And the mesh data (5 in FIG. 12) are geographically associated,
A mesh code is assigned to each road section. Further, a road type corresponding to the section type is assigned (S2 in FIG. 14). Next, statistical speed data corresponding to each road section data is set (S3 in FIG. 14), and an optimal route search is performed by the Dijkstra method (known graph search theory) (S4). The route obtained by this search can be displayed on the display device. A program corresponding to the processing flow shown in FIG. 14 is stored in a recording medium, and by reading the program, the program is stored in a processing device (3 in FIG. 4), and processing can be performed by inputting data. .

As a result, the calculation of the shortest route between the two points and the calculation of the required time can be performed using data that is close to reality.

[0038]

According to the present invention, the speed in each direction of the road in the mesh can be obtained by the statistical processing using the on-vehicle data, and the processing time can be greatly reduced. Further, it is not necessary to travel on all roads and acquire on-vehicle data, which facilitates data acquisition. In addition, since a wide-range map is displayed, it is possible to immediately know which road is in which direction and in which direction, so that the operation management of the vehicle can be performed reliably and easily.

[Brief description of the drawings]

FIG. 1 is a diagram showing a principle configuration of the present invention.

FIG. 2 is a diagram showing a configuration for creating actual speed information data from vehicle-mounted data.

FIG. 3 is an explanatory diagram of on-vehicle data acquisition.

FIG. 4 is a diagram illustrating a configuration of an information processing apparatus in which the present invention is implemented.

FIG. 5 is a (first) diagram illustrating various data structures used in the embodiment.

FIG. 6 is a (second) diagram illustrating various data structures used in the embodiment.

FIG. 7 is a diagram illustrating a processing flow according to the first embodiment of the present invention.

FIG. 8 is a diagram illustrating a principle of calculating a statistical speed for each direction in a mesh.

FIG. 9 is a diagram illustrating an example of statistical speed data and a statistical speed graphic.

10 is a diagram showing an example of speed display for each mesh created by the processing of FIG. 7;

FIG. 11 is a diagram showing another example of the statistical speed graphic.

FIG. 12 is a diagram illustrating a configuration of a second embodiment including a route search.

FIG. 13 is a diagram showing the relationship between road sections and road points.

FIG. 14 is a diagram showing a processing flow of Example 2 according to the present invention.

[Explanation of symbols]

 1 in-vehicle data recording unit 1a position 1b speed 1c date and time 1d road type 2 speed actual information acquisition unit 2a speed actual information 3 processing unit 3a mesh-specific statistical speed calculation unit 3b mesh-specific speed display unit 3c road type corresponding Part 4 Road map data 5 Mesh figure data

Continuation of the front page (72) Inventor Osamu Eto 1-403 Kosugi-cho, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Social Science Laboratory (72) Inventor Yukihiro Uchida 1-403 Kosugi-cho, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Address Fujitsu Social Science Laboratory Co., Ltd.

Claims (6)

[Claims] In a method of presenting a vehicle operation status, actual speed information including each position of a running vehicle and a corresponding direction and speed of the vehicle is obtained as input data, and a road map is determined by a predetermined distance. Provide mesh data delimited by meshes with
From the performance information that includes the position in each mesh,
For each direction segment in which all directions are divided at a fixed angle, the speed information of each position included in the same direction segment is extracted, and the speed for each direction in the mesh is statistically processed. Display form data corresponding to the processed speed value is added, and road map data,
A method for presenting a vehicle operation status, characterized by displaying the speed statistically processed for each direction of each mesh together with the mesh data. 2. A speed display figure for each direction for representing the speed of each direction segment as a display form corresponding to the value of the statistically processed speed for each direction segment.
A method for presenting a vehicle operating condition, wherein one or both of the color and the shape of each speed display graphic are made different in accordance with the value of the statistically processed speed. 3. The method according to claim 1, wherein information on a direction and a speed corresponding to each position is acquired as input speed data as the speed actual information, and the speed actual information is classified according to a direction category in a mesh. The statistically processed speed is calculated for each of the road types, and data in a form corresponding to the value of the statistically processed speed for each direction classification is added to each of the road types in each mesh. A method for presenting the operation status of a car, characterized in that the processed speed is displayed for each road type. 4. A method for searching and presenting an optimal route of a car,
The actual speed information including each position of the traveling vehicle and the corresponding direction and speed of the vehicle is obtained as input data, and mesh data for dividing a road map with a mesh having a predetermined distance is provided. From each of the above meshes, from the actual information including the position in each mesh, for each direction segment that divides all directions at a fixed angle,
The velocity information of each position included in the same direction is extracted, and the velocity of each direction in the mesh is statistically processed. The statistically processed velocity is stored in a memory corresponding to each road section, and is stored in the memory. And searching for and presenting an optimal route from a selected start point to an end point on a road map while referring to the statistically processed speed of the road section. 5. A computer-readable recording medium in which a program for presenting the operation status of a vehicle is recorded by an information processing device having a display device, wherein each position of the traveling vehicle and a corresponding vehicle location are recorded. When the actual speed information including the direction and the speed and the mesh data for dividing the road map by a mesh having a predetermined distance are input, the position in each mesh is determined for each of the meshes from the actual speed information. From the included performance information, for each direction segment that divides all directions at a fixed angle, the speed information of each position included in the same direction segment is extracted, and the speed for each direction in the mesh is statistically processed. Display data corresponding to the speed value statistically processed for each direction in the
A computer readable recording of a program for presenting the operation status of a vehicle, characterized in that the display device displays the speed statistically processed for each direction of each mesh together with the road map data and the mesh data in the assigned form. Recording medium. 6. A computer-readable recording medium in which a program for searching for and presenting an optimum route of a vehicle by an information processing device having a display device is recorded, wherein each position of a running vehicle and a corresponding vehicle are recorded. When actual speed information including the direction and speed of the vehicle and mesh data that divides the road map by a mesh having a predetermined distance are input, the speed actual information is used to determine the position in each mesh for each of the meshes. Is extracted from the performance information that includes the azimuths, for each direction segment that divides all directions at a fixed angle, the speed information of each position included in the same direction is extracted, and the speed for each direction in the mesh is statistically processed. The processed speed is stored in a memory corresponding to each road section, and the selected starting point on the road map is referred to by referring to the statistically processed speed of the road section stored in the memory. A computer-readable recording medium storing a program for searching for and presenting an optimum route of a vehicle, wherein the program searches and displays an optimum route from a point to an end point.