JP2020077238A - Information provision system, information provision method, and computer program - Google Patents

Abstract

To provide an information provision system, etc., with which it is possible for the occupant of an other vehicle to easily grasp that a hindrance to the travel of the host vehicle occurs, on the basis of a measured value pertaining to the weather condition measured by one vehicle.SOLUTION: An information provision device 6 comprises: a communication unit 61 for receiving weather-related information from a first vehicle 2A and receiving first unique information and position information and second unique information from a second vehicle 2B; a specification unit 631 for specifying a road section in which the first vehicle has traveled, on the basis of the position information; a generation unit 632 for adding a unique condition of the first unique information to the measured value of the weather-related information and generating evaluation information that indicates the degree of effect on vehicles of the weather condition with respect to the road section; a determination unit 633 for determining, on the basis of the evaluation information and the second unique information, whether or not a hindrance to the traveling of the second vehicle occurs in the road section; and processing unit 634 for controlling the communication unit so as to transmit provision information conforming to the determination result of the determination unit to the second vehicle onboard terminal.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information providing system, an information providing method, and a computer program.

In recent years, a system in which a vehicle transmits weather information detected by various sensors to a server via a communication network, and the server transmits the received weather information and its accompanying information to other vehicles via the communication network. Proposed.
For example, in Non-Patent Document 1, the vehicle not only detects information such as the slipperiness of the road surface based on the wheel speed signal and provides the detected information to the passengers of the own vehicle but also through a communication network. Distributing to other vehicles is disclosed.

  Further, in Patent Document 1, a vehicle transmits information indicating the detected fluctuation of the own vehicle to a server via a communication network, and the server generates a crosswind based on the received information indicating the fluctuation and map information. An information system is disclosed that specifies a position and transmits the position of occurrence to another vehicle via a communication network.

Sumitomo Rubber Industries, Ltd., "Developing tire sensing technology" SENSING CORE "", [online], May 16, 2017, [Search August 27, 2018], internet <http://www.srigroup.co .jp / newsrelease / 2017 / sri / 2017_054.html>

JP, 2014-141191, A JP, 2001-247027, A

  The slipperiness of the road surface detected in Non-Patent Document 1 is affected by the vehicle specific conditions such as the load applied to each tire depending on the weight of the vehicle, the type and wear of the tire, and the wheel drive system. Similarly, the vehicle wobbling detected in Patent Document 1 is also affected by vehicle specific conditions such as the height of the center of gravity of the vehicle and the area of the vehicle that receives a side wind. For this reason, it is difficult to understand whether or not there will be a hindrance to the travel of other vehicles by using the actual measurement values for the weather conditions such as the slipperiness of the road surface and the wobbling of the vehicles that were actually measured for one vehicle. is there.

  In view of such an actual situation, the present invention can easily understand that an occupant of another vehicle has an obstacle in traveling of the own vehicle based on an actual measurement value relating to a weather condition actually measured in one vehicle. The purpose is to provide a possible information providing system.

  An information providing system according to an aspect of the present invention includes a first vehicle-mounted terminal mounted on a first vehicle, a second vehicle-mounted terminal mounted on a second vehicle, the first vehicle-mounted terminal and the second vehicle-mounted terminal, respectively. An information providing system that communicates with the first vehicle-mounted terminal, wherein the first vehicle-mounted terminal displays meteorological-related information including a measured value regarding a meteorological condition actually measured by the first vehicle, and unique conditions of the first vehicle. The first vehicle-mounted communication unit that transmits the first unique information indicating the first vehicle position information and the position information of the first vehicle to the outside, and the second vehicle-mounted terminal transmits second unique information indicating the unique condition of the second vehicle to the outside A second vehicle-mounted communication unit for transmitting is provided, and the information providing device receives the weather-related information, the first unique information, and position information from the first vehicle-mounted communication unit, and the second vehicle-mounted communication unit receives the second information. A communication unit that receives the unique information, a specifying unit that specifies the road section on which the first vehicle has traveled based on the position information, and a measured value of the weather-related information with the unique condition of the first unique information. In addition, a generation unit that generates evaluation information indicating the degree of influence of the weather condition on the vehicle for the road section, and the second vehicle in the road section based on the evaluation information and the second unique information. And a processing unit that controls the communication unit to transmit the provided information according to the determination result of the determination unit to the second vehicle-mounted terminal. , An information providing system.

  An information providing method according to an aspect of the present invention is an information providing method executed by an information providing apparatus that communicates with each of a first vehicle-mounted terminal mounted on a first vehicle and a second vehicle-mounted terminal mounted on a second vehicle. Then, from the first vehicle-mounted terminal, meteorological-related information including a measured value regarding a meteorological condition actually measured by the first vehicle, first unique information indicating a unique condition of the first vehicle, and a position of the first vehicle. A receiving step of receiving information and second unique information indicating a unique condition of the second vehicle from the second vehicle-mounted terminal, and a road section in which the first vehicle has traveled based on the position information. Generating evaluation information indicating a degree of influence of the weather condition on the vehicle for the road section by adding a specific step of specifying and the measured value of the weather-related information to the specific condition of the first specific information And a determination step of determining whether or not the traveling of the second vehicle will be hindered in the road section based on the evaluation information and the second unique information, and provision according to the determination result of the determination step. And a processing step of controlling the communication unit to transmit information to the second vehicle-mounted terminal.

  A computer program according to one aspect of the present invention causes a computer to function as an information providing device that communicates with each of a first vehicle-mounted terminal mounted in a first vehicle and a second vehicle-mounted terminal mounted in a second vehicle. A program, comprising: a computer, weather-related information including a measured value related to a weather condition measured in the first vehicle from the first vehicle-mounted terminal, first unique information indicating a unique condition of the first vehicle, and A communication unit that receives the position information of the first vehicle and also receives the second unique information indicating the unique condition of the second vehicle from the second vehicle-mounted terminal, and the first vehicle based on the position information. An evaluation indicating the degree of influence of the weather condition on the vehicle regarding the road section, by adding the specific condition of the first specific information to the measured value of the weather related information and the specifying unit that specifies the road section that has traveled. A generation unit that generates information, a determination unit that determines, based on the evaluation information and the second unique information, whether the traveling of the second vehicle will be hindered in the road section, and a determination of the determination unit It is a computer program for making it function as a processing part which controls the above-mentioned communication part so that provision information according to a result may be transmitted to the 2nd on-vehicle terminal.

  According to the present invention, it is possible to easily understand that an occupant of another vehicle has trouble in traveling of the own vehicle, based on an actual measurement value of the weather condition actually measured by one vehicle.

1 is an overall configuration diagram of an information providing system according to an embodiment of the present invention. It is a block diagram which shows an example of an internal structure of a vehicle-mounted terminal. It is a figure which shows an example of a rank table. It is a flowchart which shows the process which an information provision apparatus performs. It is explanatory drawing which shows the service example of an information provision system. It is explanatory drawing which shows the other service example of an information provision system.

[Description of Embodiments of the Present Invention]
First, the contents of the embodiments of the present invention will be listed and described.
(1) An information providing system according to an embodiment of the present invention includes a first vehicle-mounted terminal mounted on a first vehicle, a second vehicle-mounted terminal mounted on a second vehicle, the first vehicle-mounted terminal and the second vehicle-mounted terminal. An information providing system comprising: an information providing device that communicates with each of the terminals, wherein the first vehicle-mounted terminal includes weather-related information including an actual measurement value regarding a weather condition actually measured by the first vehicle; The second vehicle-mounted terminal includes the first vehicle-mounted communication unit that transmits the first vehicle-specific information indicating the vehicle-specific information and the position information of the first vehicle to the outside, and the second vehicle-mounted terminal includes the second vehicle-specific information indicating the vehicle-unique condition of the second vehicle. Is transmitted to the outside, the information providing device receives the weather-related information, the first unique information and the position information from the first vehicle-mounted communication unit, and from the second vehicle-mounted communication unit. A communication unit that receives the second unique information, an identifying unit that identifies a road section on which the first vehicle has traveled based on the position information, and an actual measurement value of the weather-related information that includes the first unique information. Based on the evaluation information and the second unique information, a generation unit that generates evaluation information indicating the degree of influence of the weather condition on the vehicle in consideration of a unique condition, and the road section, based on the evaluation information and the second unique information. A determination unit that determines whether or not the traveling of the second vehicle will be hindered, and a processing unit that controls the communication unit to transmit the provided information according to the determination result of the determination unit to the second vehicle-mounted terminal. , Is provided.

According to the information providing system, the information providing device adds the specific condition of the first vehicle to the measured value of the weather condition actually measured by the first vehicle, and the weather condition of the road section in which the first vehicle travels. Evaluation information indicating the degree of influence on the vehicle by is generated. Then, the information providing device determines whether or not the traveling of the second vehicle will be hindered in the road section based on the evaluation information and the unique condition of the second vehicle, and provides the provided information according to the determination result. 2 Send to vehicle.
Accordingly, for example, only when the traveling of the second vehicle is hindered, the provision information is transmitted to the second vehicle so that the passenger of the second vehicle can easily hinder the traveling of the own vehicle. You can figure it out.

(2) It is preferable that the evaluation information is information in which the degree of influence is ranked and evaluated.
In this case, the information providing apparatus generates evaluation information that roughly evaluates the degree of influence of the weather condition on the road section on the vehicle according to the rank, based on the measured value regarding the weather condition measured on the first vehicle. be able to. Accordingly, the information providing device can easily determine whether or not the traveling of the second vehicle will be hindered.

(3) When the determination result of the determination unit is affirmative, it is preferable that the processing unit controls the communication unit so as to transmit the provided information including information that calls attention to the second vehicle-mounted terminal. ..
In this case, the passenger of the second vehicle can travel while paying attention to the road section by receiving the information calling attention.

(4) It is preferable that the weather-related information includes, as the measured value, a coefficient of friction between a road surface and a tire of the first vehicle.
In this case, the information providing device easily determines whether or not the tire of the second vehicle slips and the traveling is hindered, based on the friction coefficient between the road surface and the tire actually measured by the first vehicle. be able to.

(5) The first unique information and the second unique information are at least one of a load applied to each tire due to a vehicle weight, a tire type, a tire wear degree, and a wheel driving method as the unique condition. It is preferable to include one.
In this case, the information providing device uses, as the respective unique conditions of the first vehicle and the second vehicle that affect the friction coefficient between the road surface and the tire, the load applied to each tire depending on the weight of the vehicle, the type of the tire, the tire At least one of the degree of wear and the driving method of the wheels is used to generate the evaluation information of the road section and determine whether or not the traveling of the second vehicle will be hindered. With this, the information providing apparatus can more easily determine whether the tire of the second vehicle slips and the traveling is hindered.

(6) The weather-related information may include, as the measured value, the intensity of crosswind with respect to the first vehicle.
In this case, the information providing device can easily determine whether or not the second vehicle fluctuates due to the side wind and the traveling is hindered based on the intensity of the side wind actually measured by the first vehicle.

(7) The first unique information and the second unique information preferably include, as the unique condition, at least one of the height of the center of gravity of the vehicle and the area of the vehicle that receives a crosswind.
In this case, the information providing device uses at least one of the height of the center of gravity of the vehicle and the area of the vehicle that receives the crosswind as the respective unique conditions of the first vehicle and the second vehicle that affect the strength of the crosswind. , Generating the evaluation information of the road section and determining whether or not the traveling of the second vehicle will be hindered. Accordingly, the information providing apparatus can more easily determine whether or not the second vehicle fluctuates due to the side wind and thus hinders traveling.

(8) The communication unit receives the weather-related information, the first unique information, and the position information from the first vehicle-mounted terminals mounted on the plurality of first vehicles, and is mounted on the plurality of second vehicles. The second specific information is received from the second vehicle-mounted terminal, the specifying unit specifies the road section on which each of the first vehicles has traveled, based on the plurality of position information, and the generating unit is configured to specify each of the first and second road sections. The evaluation information about the road section on which one vehicle travels is generated by adding the specific condition of the first specific information corresponding to the first vehicle to the actual measurement value of the weather related information corresponding to the first vehicle. Then, the determination unit determines whether or not the traveling of each of the plurality of second vehicles is hindered in each of the road sections, the evaluation information of the road section, and the second uniqueness corresponding to the second vehicle. It is preferable to make a determination based on information, and the processing unit preferably controls the communication unit to transmit the provided information according to the determination result of the determination unit to the corresponding second vehicle-mounted terminal.
In this case, the information providing device determines, in each road section in which the plurality of first vehicles have traveled, whether or not the travel of each of the plurality of second vehicles will occur, and provides the provided information according to the determination result, It can be transmitted to the corresponding second vehicle.

  (9) The information providing method according to the embodiment of the present invention is an information providing method executed by the information providing apparatus that constitutes the above-described information providing system. Therefore, the information providing method of the present embodiment has the same operational effect as the above-described information providing system.

  (10) A computer program according to an embodiment of the present invention is a computer program for causing a computer to function as an information providing device included in the above information providing system. Therefore, the computer program of the present embodiment has the same operational effect as the above-described information providing system.

[Details of the embodiment of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that at least a part of the embodiments described below may be arbitrarily combined.
[Overall configuration of information provision system]
FIG. 1 is an overall configuration diagram of an information providing system according to an embodiment of the present invention. As shown in FIG. 1, the information providing system 1 according to the present embodiment includes a first vehicle-mounted terminal 3A mounted on a first vehicle 2A, a second vehicle-mounted terminal 3B mounted on a second vehicle 2B, a traffic control center, and the like. The information providing device 6 installed in the. The information providing device 6 can communicate with the plurality of first vehicle-mounted terminals 3A and the plurality of second vehicle-mounted terminals 3B via the public communication network 7 such as the Internet.

  The information providing device 6 of the present embodiment, based on the weather-related information and the like received from the plurality of first vehicle-mounted terminals 3A, the degree of influence on the vehicle by the weather conditions of the road section in which the plurality of first vehicles 2A travel. The evaluation information shown is generated. Then, the information providing device 6 determines whether or not the traveling of the second vehicle 2B will be hindered in the road section based on the generated evaluation information and the information received from the second vehicle-mounted terminal 3B. If the result is affirmative, it is possible to execute a service for transmitting information that calls attention to the second vehicle-mounted terminal 3B.

In the present specification, the term "vehicle" refers to all vehicles that can pass through a road, and includes vehicles such as automobiles (motor vehicles, motorized bicycles, light vehicles, trolley buses, etc.) as well as motorcycles, etc. Be done. Hereinafter, the common items of the first vehicle 2A and the second vehicle 2B will be collectively referred to as the vehicle 2.
The “in-vehicle terminal” is a terminal device installed in a vehicle that can communicate with the information providing device 6, and is, for example, a car navigation device in which an application for using the information received from the information providing device 6 is installed. .. Hereinafter, when the common items of the first vehicle-mounted terminal 3A and the second vehicle-mounted terminal 3B are described, they are collectively referred to as the vehicle-mounted terminal 3.

[Internal configuration of in-vehicle terminal]
FIG. 2 is a block diagram showing an example of the internal configuration of the vehicle-mounted terminal 3. As shown in FIG. 2, the vehicle-mounted terminal 3 includes a control unit (ECU: Electronic Control Unit) 30, a GPS receiver 31, a gyro sensor 32, a wheel rotation speed sensor 33, a storage unit 34, a display 35, a speaker 36, and an input device. 37, a side wind detection sensor 38, an in-vehicle communication unit 39, and the like.

The control unit 30 performs a route search for the vehicle 2 and controls other electronic devices 31 to 39.
The vehicle-mounted communication unit 39 is composed of a wireless communication device having an amplifier circuit, a frequency conversion circuit, a modulation and demodulation circuit, etc., which are necessary for wireless communication with a base station (not shown) connected to the public communication network 7.

The GPS receiver 31, the gyro sensor 32, and the wheel rotation speed sensor 33 are sensors that measure the current position, direction, and speed of the vehicle 2.
The control unit 30 obtains the vehicle position of the own vehicle from the GPS signal periodically acquired by the GPS receiver 31. The control unit 30 complements the vehicle position and direction based on the input signals of the gyro sensor 32 and the wheel rotation speed sensor 33, and grasps the accurate current position and direction of the vehicle 2. The output signal of the wheel rotation speed sensor 33 is also used for ABS (Antilock Brake System) control.

  The storage unit 34 includes a map database. The map database provides the control unit 30 with road map data. The road map data includes link data and node data, and is stored in a recording medium such as a DVD, CD-ROM, memory card, or HDD. The storage unit 34 reads out necessary road map data from the recording medium and provides it to the control unit 30.

The display 35 and the speaker 36 are output devices for notifying the passengers of the vehicle 2 of various information generated by the control unit 30.
Specifically, the display 35 displays an input screen at the time of route search, a map image around the vehicle, information about a route to a destination, and the like. The speaker 36 outputs an announcement or the like for guiding the vehicle 2 to the destination. These output devices can also notify the passenger of the provided information that the vehicle-mounted communication unit 39 has received from the information providing device 6.

  The input device 37 is a device for a passenger of the vehicle 2 to perform various input operations. The input device 37 is a combination of an operation switch provided on the handle, a joystick, and a touch panel provided on the display 35. The input device 37 may be a voice recognition device that receives an input by voice recognition of a passenger. The input signal generated by the input device 37 is transmitted to the control unit 30.

  The control unit 30 is configured by an arithmetic processing device such as a microcomputer that executes various control programs stored in the storage unit 34. The control unit 30 executes the above control program to display a map image on the display 35, calculate a travel route from the departure place to the destination, and guide the vehicle 2 to the destination according to the calculated travel route. It is possible to execute various navigation functions such as a function to perform.

The wheel rotation speed sensor 33 is a sensor that detects the rotation speed of the wheels. The wheel rotation speed sensor 33 detects the rotation speed of the wheel every predetermined time (for example, several seconds).
As the wheel rotation speed sensor 33, a wheel speed sensor that uses an electromagnetic pickup or the like to generate a rotation pulse and measures the rotation speed of the wheel from the number of pulses; It is possible to use an angular velocity sensor including those that measure the rotational speed of the wheel.

Each time the wheel rotation speed sensor 33 detects the wheel rotation speed, the control unit 30 calculates the friction coefficient between the road surface and the tire based on the detected rotation speed using a known analysis method. Based on the calculated friction coefficient, the control unit 30 causes the output device such as the display 35 to output a reminder to the occupants who are driving the vehicle.
For example, when the coefficient of friction is less than or equal to the threshold value, the control unit 30 causes the display 35 to output a reminder to reduce the vehicle speed because the tire is likely to slip.

The crosswind detection sensor 38 is a sensor that detects a crosswind with respect to the vehicle 2. The crosswind detection sensor 38 detects a crosswind every predetermined time (for example, several seconds).
As the lateral wind detection sensor 38, a rolling sensor that detects rolling (inclination in the left-right direction) of the vehicle 2, a lateral acceleration sensor that detects lateral acceleration that acts on the vehicle 2, or the like can be used.

Each time the crosswind detection sensor 38 detects a crosswind, the control unit 30 calculates the crosswind intensity (for example, wind speed) based on the detected value, and based on the calculated crosswind intensity, the boarding while the host vehicle is driving. A warning for the person is output to an output device such as the display 35.
For example, when the intensity of the crosswind is equal to or higher than the threshold value, the control unit 30 causes the display 35 to output a caution for prompting a reduction in the vehicle speed because the vehicle tends to fluctuate due to the crosswind.

  Every time the wheel rotation speed sensor 33 detects the wheel rotation speed, the control unit 30 uses the information indicating the friction coefficient calculated as described above as the weather-related information including the actual measurement value regarding the weather condition around the vehicle 2. To generate. Further, every time the wheel rotation speed sensor 33 detects the wheel rotation speed, the control unit 30 outputs information indicating the vehicle position measured by the GPS receiver 31 or the like at the time of detection of the wheel rotation speed sensor 33 to the vehicle 2 It is generated as position information of.

  Each time the crosswind detection sensor 38 detects a crosswind, the control unit 30 generates information indicating the intensity of the crosswind calculated as described above as weather-related information including an actual measurement value regarding the weather condition around the vehicle 2. Further, every time the crosswind detection sensor 38 detects a crosswind, the control unit 30 generates information indicating the vehicle position measured by the GPS receiver 31 or the like as the position information of the vehicle 2 when the crosswind detection sensor 38 detects the crosswind. To do.

The control unit 30 generates unique information indicating the unique condition of the vehicle 2. The peculiar condition of the vehicle 2 is a peculiar condition of the vehicle 2 that affects an actual measurement value related to the weather condition around the vehicle 2.
For example, when the measured value is the coefficient of friction between the road surface and the tires, the specific condition of the vehicle 2 is that the weight of the vehicle 2 applies to each tire, the type of the tire, the degree of wear of the tire, and the driving of the wheels. Method etc. are mentioned. In addition, when the measured value is the strength of the crosswind, the unique conditions of the vehicle 2 include the height of the center of gravity of the vehicle 2 and the area of the vehicle 2 that receives the crosswind.

When the measured value is the coefficient of friction between the road surface and the tire, the control unit 30 of the present embodiment generates unique information including information indicating the tire type and the wheel driving method as the unique condition of the vehicle 2. To do.
Further, the control unit 30 of the present embodiment generates the unique information including the information indicating the height of the center of gravity of the vehicle 2 as the unique condition of the vehicle 2 when the measured value is the strength of the crosswind.

The control unit 30 causes the in-vehicle communication unit 39 to transmit the generated weather-related information (information indicating the friction coefficient, information indicating the cross wind strength), the unique information, and the position information to the information providing device 6.
Therefore, the vehicle-mounted communication unit 39 of the first vehicle-mounted terminal 3A transmits the weather-related information of the first vehicle 2A, the first characteristic information that is the characteristic condition of the first vehicle 2A, and the position information of the first vehicle 2A to the outside. It functions as a first in-vehicle communication unit. The in-vehicle communication unit 39 of the second in-vehicle terminal 3B functions as a second in-vehicle communication unit that transmits the second unique information, which is the unique condition of the second vehicle 2B, to the outside.

  Although the control unit 30 of the present embodiment causes the vehicle-mounted communication unit 39 to transmit the weather-related information, the unique information, and the position information to the information providing device 6, the control unit 30 of the second vehicle-mounted terminal 3B has at least the unique information. The in-vehicle communication unit 39 may transmit the (second unique information) to the information providing device 6.

  In the present embodiment, the friction coefficient between the road surface and the tire and the strength of the crosswind with respect to the vehicle 2 are used as the actual measurement values regarding the weather conditions around the vehicle 2, but only one of the friction coefficient and the strength of the crosswind is used. May be the actual measurement value. Further, as the actual measurement value, other than the friction coefficient and the intensity of the cross wind may be used as long as the actual measurement value is the actual weather condition around the vehicle 2. For example, since the field of view in front of the vehicle is affected by weather conditions such as fog and rain, a value obtained by actually measuring the degree of the field of view may be used as the actually measured value.

[Internal configuration of information providing device]
As shown in FIG. 1, the information providing device 6 includes a communication unit 61, a storage unit 62, a control unit 63, and the like.
The communication unit 61 is composed of a communication device having an amplifier circuit, a frequency conversion circuit, a modulation and demodulation circuit, etc., which are required for wired communication with the public communication network 7. The communication unit 61 receives information (weather-related information, position information, first unique information) received from the plurality of first vehicle-mounted terminals 3A via the public communication network 7, and the plurality of second vehicle-mounted terminals 3B to the public communication network 7. The information (second unique information) received via is given to the control unit 63. In addition, the communication unit 61 can transmit the information given by the control unit 63 to the plurality of first vehicle-mounted terminals 3A and the plurality of second vehicle-mounted terminals 3B via the public communication network 7.

The storage unit 62 is composed of a magnetic storage medium or a non-volatile storage medium such as a flash memory. The control unit 63 is composed of a microcomputer including a CPU, RAM, ROM, flash memory and the like.
The control unit 63 realizes various processes and functions by causing the CPU to read and execute the computer program recorded in the storage unit 62. The process executed by the control unit 63 includes, for example, a process of generating evaluation information indicating the degree of influence of the weather condition on the vehicle, and whether or not the traveling of the second vehicle 2B will be hindered based on the evaluation information. There is a determination process.

  The storage unit 62 stores, for example, a traffic situation map. The traffic situation map is a collection of data (virtual database) in which high-definition road map data, which is static information, is overlaid with dynamically changing dynamic information. In the traffic situation map of the present embodiment, as the dynamic information, weather-related information received from the plurality of first vehicle-mounted terminals 3A, position information, and first unique information, and evaluation information generated by the control unit 63 (described later). ) And are superimposed.

  The control unit 63 updates the dynamic information of the traffic situation map stored in the storage unit 62 every predetermined update cycle. For example, the control unit 63 collects the weather-related information, the position information, and the first unique information from the plurality of first vehicle-mounted terminals 3A for each predetermined update cycle, and based on the collected information, the traffic condition map. Update the dynamic information of.

  The storage unit 62 stores a rank table used when the control unit 63 generates the evaluation information. The rank table is a table showing a plurality of ranks set in advance according to the peculiar condition of the corresponding vehicle 2 for each type of the actual measurement value related to the weather condition.

  FIG. 3 is a diagram showing an example of the rank table used in this embodiment. As shown in FIG. 3, in the rank table of the present embodiment, there are four ranks in each of the case where the actual measurement value relating to the weather condition is the friction coefficient between the road surface and the tire and the case where the cross wind is strong. Is set. The rank table may be set in two or more stages.

  With respect to the friction coefficient between the road surface and the tires, the wheel drive system (AWD (All Wheel Drive), FF (Front engine Front drive), FR (Front engine Rear), which is a unique condition of the corresponding vehicle 2, is used. drive)) and the type of tire (studless tire, summer tire) are combined to set the rank. In the illustrated example, “AWD statless” is set as rank 1, “AWD summer tire” is set as rank 2, “FF summer tire” is set as rank 3, and “FR summer tire” is set as rank 4. For example, the rank value indicates a larger value for the combination that is more likely to slip.

  The cross wind strength is ranked according to the height of the center of gravity of the vehicle 2, which is a unique condition of the corresponding vehicle 2. In the example shown in the figure, Rank 1 is the height of the center of gravity of a sports car, Rank 2 is the height of the center of gravity of a sedan type vehicle, Rank 3 is the height of the center of gravity of a light vehicle, and Rank 4 is the center of gravity of a wagon type vehicle. "Height" is set respectively. The rank value is, for example, larger as the height of the center of gravity is higher.

[Functional configuration of control unit of information providing apparatus]
In FIG. 1, the control unit 63 of the information providing device 6 has a specific unit as a function of executing a process for transmitting information calling attention to the second vehicle-mounted terminal 3B based on the information received from the first vehicle-mounted terminal 3A. 631, a generation unit 632, a determination unit 633, and a processing unit 634. These functions are functions implemented by the CPU of the control unit 63 when the CPU of the control unit 63 reads and executes a program of one or more computers stored in the storage unit 62. However, at least a part of the functions may be realized by hardware such as an electronic circuit.

  The specifying unit 631 sets the road on which the plurality of first vehicles 2A have respectively traveled at regular time intervals (for example, several minutes) based on the position information of the first vehicle 2A and the road map data of the traffic situation map updated during that time. Specify the section. The identifying unit 631 passes the identified road section to the generating unit 632.

  The generation unit 632 adds the unique condition of the first unique information of the first vehicle 2A to the actual measurement value of the weather-related information received from the first vehicle-mounted terminal 3A of each of the plurality of first vehicles 2A, and the first value The evaluation information indicating the degree of influence on the vehicle by the weather condition of the road section on which the vehicle 2A travels is generated. The evaluation information of the present embodiment is information in which the degree of influence is ranked and evaluated based on a rank table (see FIG. 3).

  For example, when the measured value of the weather-related information is the friction coefficient between the road surface and the tire, the generation unit 632 determines that the friction coefficient included in the weather-related information and the unique condition (wheel drive) included in the first unique information. Method and tire type), an appropriate rank is selected from ranks 1 to 4 corresponding to the specific condition of the rank table. Then, the generation unit 632 generates evaluation information indicating the selected rank.

  When the measured value of the weather-related information is the crosswind strength, the generation unit 632 determines the crosswind strength included in the weather-related information and the unique condition (height of the center of gravity of the vehicle 2) included in the first unique information. In consideration of this, an appropriate rank is selected from ranks 1 to 4 corresponding to the specific condition in the rank table. Then, the generation unit 632 generates evaluation information indicating the selected rank.

  The generation unit 632 updates the dynamic information of the traffic situation map based on the evaluation information generated for the road section. It should be noted that the evaluation information may be information evaluated by other than the rank as long as it is information that evaluates the degree of influence of the weather condition on the road section on the vehicle.

  When the communication unit 61 receives the second unique information of each second vehicle 2B from the vehicle-mounted communication unit 39 of the second vehicle-mounted terminal 3B mounted on the plurality of second vehicles 2B, the determination unit 633 determines the second The unique information is acquired from the communication unit 61. Then, the determination unit 633 determines whether or not the traveling of each of the plurality of second vehicles 2B is hindered in each of the road sections, the evaluation information of the road section, and the second unique information corresponding to the second vehicle 2B. Judgment based on the unique condition of.

  First, the determination unit 633 of the present embodiment specifies which of ranks 1 to 4 corresponding to the specific condition of the second table, the specific condition of the second vehicle included in the second specific information. Then, the determination unit 633 determines whether or not the traveling of the second vehicle 2B is hindered by comparing the value of the specified rank and the value of the rank of the evaluation information. For example, when the value of the specified rank is equal to or higher than the value of the rank of the evaluation information, the determination unit 633 determines that the traveling of the second vehicle 2B will be hindered, and the value of the specified rank is the rank of the evaluation information. When it is less than the value, it is determined that the traveling of the second vehicle 2B is not hindered. The determination unit 633 passes the determination result to the processing unit 634.

  The processing unit 634 executes a process for transmitting the provided information according to the determination result of the determination unit 633 to the corresponding second vehicle-mounted terminal 3B. When the determination result of the determination unit 633 is affirmative, the processing unit 634 of the present embodiment controls the communication unit 61 so as to transmit the provision information including the information that calls the corresponding second vehicle-mounted terminal 3B. Note that the provision information may include information indicating the position of the road section or information indicating an alternative travel route that avoids the road section, in addition to or instead of the information to call attention.

On the other hand, when the determination result of the determination unit 633 is negative, the processing unit 634 does not perform the process for transmitting the provision information to the corresponding second vehicle-mounted terminal 3B.
The processing unit 634 of the present embodiment transmits the provision information to the second vehicle-mounted terminal 3B only when the determination result of the determination unit 633 is affirmative, but also when the determination result is negative. The provision information (for example, only road section information) may be transmitted to the second vehicle-mounted terminal 3B.

[Processing of information providing device]
FIG. 4 is a flowchart showing the processing executed by the information providing device 6. As shown in FIG. 4, the information providing device 6 receives the weather related information, the first unique information, and the position information from the first vehicle 2A at predetermined time intervals (step ST11), and based on the received information. Update the dynamic information on the traffic situation map.

  The information providing device 6 specifies the road section on which the first vehicle 2A has traveled, at regular time intervals, based on the position information of the traffic condition map updated during that time (step ST12). Then, the information providing device 6 adds the unique condition of the first unique information of each first vehicle 2A to the measured value of the weather related information received from the plurality of first vehicles 2A, and the weather condition of the road section. The evaluation information indicating the degree of influence on the vehicle by is generated (step ST13), and the dynamic information of the traffic situation map is updated based on the generated evaluation information. The specific method of generating the evaluation information is as described above.

When the information providing device 6 receives the second unique information from the second vehicle 2B (in the case of "Yes" in step ST14), the information providing device 6 proceeds to the next step ST15. On the other hand, if the information providing device 6 does not receive the second unique information from the second vehicle 2B (in the case of “No” in step ST14), the processes of steps ST11 to ST13 are repeatedly executed.
In step ST15, the information providing device 6 determines whether or not the traveling of the second vehicle 2B will be hindered in the road section based on the second unique information received from the second vehicle 2B and the evaluation information of the road section. To judge. The specific determination method is as described above.

When the determination result of step ST15 is affirmative, the information providing device 6 transmits the provision information including the information for calling attention to the second vehicle-mounted terminal 3B and the road section information (step ST16), and ends the process.
On the other hand, when the determination result of step ST15 is negative, the information providing device 6 ends the process without transmitting the provided information to the second vehicle 2B.

[Service example of information provision system]
FIG. 5 is an explanatory diagram showing a service example of the information providing system 1. In FIG. 5, when the first vehicle 2A, which is the preceding vehicle, transmits the information indicating the coefficient of friction between the road surface and the tires to the information providing device 6 as the weather-related information, the second vehicle 2B, which is the rear vehicle, Describes examples of services to be provided. In this case, the first vehicle 2A transmits the first unique information including the information indicating the tire type and the wheel driving method to the information providing device 6. Similarly, the second vehicle 2B transmits the second unique information including information indicating the type of tire and the driving method of the wheels to the information providing device 6. Hereinafter, the weather related information, the first unique information, and the second unique information will be described by showing specific information included in these pieces of information.

  The plurality of first vehicles 2A transmit information indicating the coefficient of friction, position information, and information indicating the tire type and the wheel driving method to the information providing device 6 (step S21). The information providing device 6 identifies the road section on which the first vehicle 2A has traveled based on the received position information. Then, the information providing device 6 ranks the degree of influence of the weather condition on the vehicle for the specified road section on the basis of the rank table, and generates the evaluation information of the road section (step S22). At that time, the information providing device 6 sets in advance the friction coefficient of the rank table by adding information (specific condition) indicating the tire type and the wheel driving method to the information indicating the friction coefficient (measured value). An appropriate rank is selected from ranks 1 to 4.

  On the other hand, the second vehicle 2B transmits information indicating the type of tire of the own vehicle and the driving method of the wheels of the own vehicle to the information providing device 6 (step S23). The information providing device 6 determines that the unique condition of the second vehicle 2B is one of the ranks 1 to 4 of the rank table based on the rank table and the information indicating the tire type and the wheel driving method received from the second vehicle 2B. The rank is specified (step S24).

  The information providing device 6 compares the rank of the specified unique condition of the second vehicle 2B with the rank of the road section ranked in step S22, so that the tire of the second vehicle 2B slips in the road section. Then, it is determined whether or not the running will be hindered (step S25). For example, when the value of the rank of the road section is equal to or higher than the value of the rank of the unique condition, the information providing device 6 determines that the traveling of the second vehicle 2B is hindered, and the value of the rank of the road section is determined. Is less than the value of the rank of the unique condition, it is determined that the traveling of the second vehicle 2B is not hindered. When the information providing device 6 determines that the traveling of the second vehicle 2B will be hindered, the information providing device 6 transmits the provision information including the information for calling the second vehicle 2B and the road section information (step S26).

  FIG. 6 is an explanatory diagram showing another service example of the information providing system 1. FIG. 6 illustrates a service example performed by the first vehicle 2A, which is the preceding vehicle, to the second vehicle 2B, which is the rear vehicle, when the information indicating the crosswind intensity is transmitted to the information providing device 6 as the weather-related information. ing. In this case, the first vehicle 2A transmits the first unique information including the information indicating the height of the center of gravity of the own vehicle to the information providing device 6. Similarly, the second vehicle 2B transmits the second unique information including the information indicating the height of the center of gravity of the own vehicle to the information providing device 6. Hereinafter, the weather related information, the first unique information, and the second unique information will be described by showing specific information included in these pieces of information.

  The plurality of first vehicles 2A transmit information indicating the strength of the crosswind, position information, and information indicating the height of the center of gravity of the own vehicle to the information providing device 6 (step S31). The information providing device 6 specifies the road section in which the first vehicle 2A has traveled based on the received position information, and ranks the degree of influence of the weather condition on the specified road section on the vehicle based on the rank table. , Evaluation information of the road section is generated (step S32). At this time, the information providing device 6 sets in advance the cross wind strength of the rank table by adding information (unique condition) indicating the height of the center of gravity of the first vehicle 2A to the information indicating the cross wind strength (measured value). An appropriate rank is selected from among the given ranks 1 to 4.

  On the other hand, the second vehicle 2B transmits information indicating the height of the center of gravity of the own vehicle to the information providing device 6 (step S33). In the information providing device 6, the unique condition of the second vehicle 2B is any one of the ranks 1 to 4 in the rank table based on the received information indicating the height of the center of gravity of the second vehicle 2B and the rank table. Is specified (step S34).

  The information providing device 6 compares the rank of the specified unique condition of the second vehicle 2B with the rank of the road section ranked in step S32, so that the second vehicle 2B is swayed by a crosswind in the road section. Then, it is determined whether or not the travel will be hindered (step S35). For example, when the value of the rank of the road section is equal to or higher than the value of the rank of the unique condition, the information providing device 6 determines that the traveling of the second vehicle 2B is hindered, and the value of the rank of the road section is determined. Is less than the value of the rank of the unique condition, it is determined that the traveling of the second vehicle 2B is not hindered. When the information providing device 6 determines that the traveling of the second vehicle 2B will be hindered, the information providing device 6 transmits the provision information including the information for calling attention to the second vehicle 2B and the road section information (step S36).

[Effects of this embodiment]
According to the information providing system 1 of the present embodiment, the information providing device 6 determines that the first vehicle 2A takes into consideration the specific condition of the first vehicle 2A in addition to the actual measurement value regarding the weather condition actually measured in the first vehicle 2A. The evaluation information indicating the degree of influence of the weather condition on the vehicle for the road section on which the vehicle has run is generated. Then, the information providing device 6 determines whether or not the traveling of the second vehicle 2B will be hindered in the road section based on the evaluation information and the unique condition of the second vehicle 2B, and provides according to the determination result. The information is transmitted to the second vehicle 2B. As a result, for example, only when the traveling of the second vehicle 2B is disturbed, the passengers of the second vehicle 2B are disturbed by traveling of the own vehicle by transmitting the provided information to the second vehicle 2B. Can be easily grasped.

  Since the evaluation information is information in which the degree of influence is ranked and evaluated, the information providing device 6 determines the meteorological condition of the road section based on the measured value of the meteorological condition actually measured by the first vehicle 2A. It is possible to generate evaluation information that roughly evaluates the degree of influence on the vehicle by the rank. Thereby, the information providing device 6 can easily determine whether or not the traveling of the second vehicle 2B will be hindered.

  When the information providing device 6 determines that the travel of the second vehicle 2B will be hindered, the information providing device 6 transmits the provided information including the information for calling the attention to the second vehicle 2B, so that the passenger of the second vehicle 2B calls the attention. By receiving the information, it is possible to carefully drive the road section.

  When the weather-related information includes the friction coefficient between the road surface and the tire as the actual measurement value, the information providing device 6 uses the friction coefficient between the road surface and the tire actually measured by the first vehicle 2A. Therefore, it is possible to easily determine whether or not the tire of the second vehicle 2B slips to hinder traveling.

  The information providing device 6 uses the type of tire and the driving method of the wheels as the specific conditions of the first vehicle 2A and the second vehicle 2B that affect the friction coefficient between the road surface and the tire, and the The evaluation information is generated and it is determined whether or not the traveling of the second vehicle 2B will be hindered. Therefore, the information providing device 6 can more easily determine whether or not the tire of the second vehicle 2B slips to hinder traveling.

  When the weather-related information includes, as the measured value, the intensity of the crosswind to the vehicle, the information providing device 6 determines that the second vehicle 2B is swayed by the crosswind on the basis of the intensity of the crosswind measured by the first vehicle 2A. It is possible to easily determine whether or not the trouble will occur in traveling.

  The information providing device 6 uses the height of the center of gravity of the vehicle as the unique condition of each of the first vehicle 2A and the second vehicle 2B that affects the strength of the crosswind, and generates the evaluation information of the road section and the second vehicle. It is determined whether or not there will be a hindrance to 2B traveling. Therefore, the information providing device 6 can more easily determine whether or not the second vehicle 2B fluctuates due to the side wind and thus hinders traveling.

  When the information providing device 6 receives the weather-related information, the first unique information, and the position information from the plurality of first vehicles 2A, and the second unique information from the plurality of second vehicles 2B, the following operational effects are obtained. Play. The information providing device 6 evaluates the road section in which each first vehicle 2A has traveled, by adding the specific conditions corresponding to the actual measurement values to the actual measurement values related to the meteorological conditions actually measured by each of the plurality of first vehicles 2A. Generate information. Then, the information providing device 6 determines whether or not the traveling of each of the plurality of second vehicles 2B is hindered in each of the road sections, the evaluation information corresponding to the road section, and the unique information corresponding to the second vehicle 2B. The determination is made based on the condition, and the provision information according to the determination result is transmitted to the corresponding second vehicle 2B. Therefore, the information providing device 6 determines whether or not the traveling of each of the plurality of second vehicles 2B will be hindered in each road section where the plurality of first vehicles 2A have traveled, and the provision information according to the determination result. Can be transmitted to the corresponding second vehicle 2B.

[Other]
The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above meaning but by the scope of the claims, and is intended to include the meaning equivalent to the scope of the claims and all modifications within the scope.

1 Information Providing System 2A First Vehicle 2B Second Vehicle 3A First In-vehicle Terminal 3B Second In-vehicle Terminal 6 Information Providing Device 7 Public Communication Network 30 Control Unit 31 GPS Receiver 32 Gyro Sensor 33 Wheel Rotation Speed Sensor 34 Storage Unit 35 Display 36 Speaker 37 Input Device 38 Crosswind Detection Sensor 39 In-Vehicle Communication Section (First In-Vehicle Communication Section, Second In-Vehicle Communication Section)
61 communication unit 62 storage unit 63 control unit 631 identification unit 632 generation unit 633 determination unit 634 processing unit

Claims (10)

An information providing system including a first vehicle-mounted terminal mounted on a first vehicle, a second vehicle-mounted terminal mounted on a second vehicle, and an information providing apparatus that communicates with each of the first vehicle-mounted terminal and the second vehicle-mounted terminal. And
The first vehicle-mounted terminal externally outputs weather-related information including an actual measurement value regarding a weather condition actually measured by the first vehicle, first unique information indicating a unique condition of the first vehicle, and position information of the first vehicle. A first in-vehicle communication unit for transmitting to
The second vehicle-mounted terminal includes a second vehicle-mounted communication unit that transmits second unique information indicating a unique condition of the second vehicle to the outside,
The information providing device,
A communication unit that receives the weather-related information, the first unique information, and position information from the first vehicle-mounted communication unit, and receives the second unique information from the second vehicle-mounted communication unit;
A specifying unit that specifies a road section on which the first vehicle has traveled based on the position information;
A generation unit that adds evaluation conditions of the first specific information to the measured values of the weather-related information and generates evaluation information indicating the degree of influence of the weather condition on the road section on the vehicle;
A determination unit that determines, based on the evaluation information and the second unique information, whether traveling of the second vehicle will be hindered in the road section;
An information providing system, comprising: a processing unit that controls the communication unit to transmit the provided information according to the determination result of the determination unit to the second vehicle-mounted terminal.   The information providing system according to claim 1, wherein the evaluation information is information in which the degree of influence is ranked and evaluated.   The processing unit controls the communication unit so as to transmit the provided information including information to call attention to the second vehicle-mounted terminal when the determination result of the determination unit is affirmative. The information providing system according to item 2.   The information providing system according to claim 1, wherein the weather-related information includes a friction coefficient between a road surface and a tire of the first vehicle as the actual measurement value.   The first unique information and the second unique information include at least one of a load applied to each tire due to a vehicle weight, a tire type, a tire wear degree, and a wheel driving method as the unique condition. The information providing system according to claim 4.   The information providing system according to any one of claims 1 to 5, wherein the weather-related information includes, as the actual measurement value, a cross wind intensity with respect to the first vehicle.   The information providing system according to claim 6, wherein the first unique information and the second unique information include, as the unique condition, at least one of a height of a center of gravity of a vehicle and an area of a vehicle that receives a cross wind. The communication unit receives the weather-related information, the first unique information, and the position information from the first vehicle-mounted terminals mounted on the plurality of first vehicles, and the second vehicle-mounted mounted on the plurality of second vehicles. Receiving the second unique information from the terminal,
The specifying unit specifies a road section in which each of the first vehicles has traveled, based on a plurality of the position information,
The generation unit sets the evaluation information about the road section in which each of the first vehicles has traveled to the measured value of the weather-related information corresponding to the first vehicle to the first unique information corresponding to the first vehicle. Is generated by adding the unique conditions of
The determination unit determines whether the traveling of each of the plurality of second vehicles is hindered in each of the road sections based on the evaluation information of the road section and the second unique information corresponding to the second vehicle. Judge based on
The said processing part controls the said communication part so that the provision information according to the determination result of the said determination part may be transmitted to the said 2nd vehicle-mounted terminal corresponding to any one of Claims 1-7. Information provision system described. An information providing method executed by an information providing apparatus that communicates with each of a first vehicle-mounted terminal mounted on a first vehicle and a second vehicle-mounted terminal mounted on a second vehicle,
From the first vehicle-mounted terminal, receives meteorological-related information including measured values related to meteorological conditions measured by the first vehicle, first unique information indicating unique conditions of the first vehicle, and position information of the first vehicle. And a receiving step of receiving second unique information indicating a unique condition of the second vehicle from the second vehicle-mounted terminal,
A specifying step of specifying a road section on which the first vehicle has traveled based on the position information;
A generation step of generating the evaluation information indicating the degree of influence of the weather condition on the vehicle for the road section by adding the specific condition of the first specific information to the measured value of the weather-related information;
A determination step of determining, based on the evaluation information and the second unique information, whether or not the traveling of the second vehicle will be hindered in the road section;
An information providing method, comprising: a processing step of controlling the communication unit to transmit the provided information according to the determination result of the determination step to the second vehicle-mounted terminal. A computer program for causing a computer to function as an information providing device that communicates with each of a first vehicle-mounted terminal mounted on a first vehicle and a second vehicle-mounted terminal mounted on a second vehicle,
Computer,
From the first vehicle-mounted terminal, receives meteorological-related information including measured values related to meteorological conditions measured by the first vehicle, first unique information indicating unique conditions of the first vehicle, and position information of the first vehicle. And a communication unit that receives second unique information indicating the unique condition of the second vehicle from the second vehicle-mounted terminal,
A specifying unit that specifies a road section on which the first vehicle has traveled based on the position information;
A generation unit that adds evaluation conditions of the first specific information to the measured values of the weather-related information and generates evaluation information indicating the degree of influence of the weather condition on the road section on the vehicle;
A determination unit that determines, based on the evaluation information and the second unique information, whether traveling of the second vehicle will be hindered in the road section;
A computer program for causing a function as a processing unit that controls the communication unit to transmit the provided information according to the determination result of the determination unit to the second vehicle-mounted terminal.

Images