JP4769102B2 - Vehicle information acquisition system - Google Patents

Description

  The present invention relates to a vehicle information acquisition system.

Conventionally, a vehicle equipped with a CCD camera and recognizing other vehicles based on images taken by the CCD camera while the vehicle is running, that is, a vehicle for avoiding danger is provided. Has been. However, since the range that can be photographed by the CCD camera is limited, danger avoidance cannot be performed for other vehicles existing at positions where photographing cannot be performed. Therefore, when a sensor, a communication device, etc. are arranged on the road, and another vehicle is detected by the sensor, information on the other vehicle, that is, other vehicle information is transferred to the own vehicle, that is, the own vehicle via the communication device. A vehicle information acquisition system is provided (see, for example, Patent Document 1).
JP-A-10-261195

  However, in the conventional vehicle information acquisition system, the sensor is usually not suitable for detecting a moving body, and therefore cannot accurately detect the situation of another vehicle.

  Moreover, since there are blind spots in the sensors, it is necessary to arrange many sensors in order to accurately detect the situation of other vehicles. Therefore, it becomes difficult to improve the infrastructure, and the cost for acquiring information on other vehicles increases.

  The present invention solves the problems of the conventional vehicle information acquisition system, can detect the status of other vehicles with high accuracy, and can reduce the cost for acquiring other vehicle information. The purpose is to provide a system.

Therefore, in the vehicle information acquisition system of the present invention, the vehicle information acquisition processing means for acquiring the vehicle information consisting of the travel information and the position information detected as the vehicle travels, and the acquired vehicle information Own vehicle information transmission processing means for transmitting to other vehicles via the communication section; other vehicle information reception processing means for receiving other vehicle information transmitted from the other vehicles via the communication section; and Based on the position information, specific vehicle selection processing means for selecting a specific vehicle that satisfies a selection condition among other vehicles, and a situation determination process for determining a vehicle status for a predetermined vehicle of the specific vehicle Means and notification processing means for notifying the driver of the determination result of the situation of the vehicle.
The specific vehicle selection processing means determines whether the other vehicle is traveling within a certain range centered on the own vehicle position, whether the traveling direction of the own vehicle is different from the traveling direction of the other vehicle, and other It is judged whether the vehicle is approaching the host vehicle, traveling within a certain range centered on the host vehicle position, the traveling direction of the host vehicle is different from the traveling direction, and it is determined that the host vehicle is approaching. Select another vehicle as the specific vehicle.
Further, the situation determination processing unit selects a vehicle closest to the own vehicle among the specific vehicles as a situation determination target vehicle, and determines a communication state between the host vehicle and the situation determination target vehicle. In the case where the communication state is normal, based on the position information and the operation information in the other vehicle information of the situation determination target vehicle, a traveling situation representing a traveling state on the road of the situation determination target vehicle is determined, Based on the vehicle state information and maintenance information in the other vehicle information of the situation determination target vehicle, the situation of the vehicle representing the state of the situation determination target vehicle is determined.
When the communication state is not normal, the situation determination target vehicle is not normal, or the situation determination target vehicle is not normal, the notification processing means notifies the driver to that effect. To do.

According to the present invention, in the vehicle information acquisition system, the vehicle information acquisition processing means for acquiring the vehicle information including the travel information and the position information detected as the vehicle travels, and the acquired vehicle information Own vehicle information transmission processing means for transmitting to other vehicles via the communication section; other vehicle information reception processing means for receiving other vehicle information transmitted from the other vehicles via the communication section; and Based on the position information, specific vehicle selection processing means for selecting a specific vehicle that satisfies a selection condition among other vehicles, and a situation determination process for determining a vehicle status for a predetermined vehicle of the specific vehicle Means and notification processing means for notifying the driver of the determination result of the situation of the vehicle.
The specific vehicle selection processing means determines whether the other vehicle is traveling within a certain range centered on the own vehicle position, whether the traveling direction of the own vehicle is different from the traveling direction of the other vehicle, and other It is judged whether the vehicle is approaching the host vehicle, traveling within a certain range centered on the host vehicle position, the traveling direction of the host vehicle is different from the traveling direction, and it is determined that the host vehicle is approaching. Select another vehicle as the specific vehicle.
Further, the situation determination processing unit selects a vehicle closest to the own vehicle among the specific vehicles as a situation determination target vehicle, and determines a communication state between the host vehicle and the situation determination target vehicle. In the case where the communication state is normal, based on the position information and the operation information in the other vehicle information of the situation determination target vehicle, a traveling situation representing a traveling state on the road of the situation determination target vehicle is determined, Based on the vehicle state information and maintenance information in the other vehicle information of the situation determination target vehicle, the situation of the vehicle representing the state of the situation determination target vehicle is determined.
When the communication state is not normal, the situation determination target vehicle is not normal, or the situation determination target vehicle is not normal, the notification processing means notifies the driver to that effect. To do.

  In this case, based on the other vehicle information, the specific vehicle satisfying the selection condition among the other vehicles is selected, the vehicle situation is determined for a predetermined vehicle of the specific vehicle, and the determination result of the situation is the driver Therefore, it is possible to accurately detect the situation of other vehicles.

  In addition, since there is no blind spot in detecting the situation of other vehicles, it is not necessary to provide many sensors. Therefore, it is not necessary to maintain infrastructure, and the cost for acquiring other vehicle information can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a vehicle information acquisition system according to an embodiment of the present invention.

  In the figure, Vh0 is the own vehicle, Vhi (i = 1, 2,..., M) is another vehicle, 21 is a home server as a user terminal, 63 is a network, and the own vehicle Vh0, other vehicle Vhi, home A vehicle information acquisition system is configured by the server 21, the network 63, and the like. In the present embodiment, the host vehicle Vh0 is an electric vehicle, and has a drive motor (not shown) as a drive source and as an electric machine, and is generated by driving the drive motor. Torque is distributed to front wheel torque and rear wheel torque to rotate the front and rear wheels.

  In the present embodiment, an example applied to an electric vehicle has been described. Instead of an electric vehicle, a vehicle in which torque is generated by driving an engine as a drive source, A hybrid that generates a torque by driving a drive motor as a first drive source as an electric machine and a generator as a second drive machine as a second drive source It can be applied to a type vehicle or the like.

  The own vehicle Vh0 is provided with a vehicle information acquisition control device 11 for acquiring vehicle information. In addition, each other vehicle Vhi is also provided with a vehicle information acquisition control device 11 in the same manner as the own vehicle Vh0.

  The vehicle information acquisition control device 11 receives a GPS sensor 15 as a current location detection unit that detects the current location of the host vehicle Vh0 as the vehicle location, and a database (DB) 16 as an information recording unit in which various information is recorded. On the basis of the obtained information, the vehicle control unit 17 that performs various arithmetic processes, the operation unit 34 as an input unit for a driver as an operator to perform a predetermined input, and various images according to an image displayed on a screen (not shown) Display unit 35 as a first output unit for displaying and notifying the vehicle information to the driver, various notifications by voice, and as a second output unit for notifying the driver of the vehicle information Audio output unit 37, communication unit 38 as a transmission / reception unit functioning as a communication terminal, sensor unit 44 as a detection unit including various sensors (not shown), a predetermined portion of the vehicle, the present embodiment The vehicle control unit 17 includes a camera 49 and the like as an imaging device that is attached to the front end of the vehicle and captures the front of the vehicle and as a monitoring device. The vehicle control unit 17 includes a GPS sensor 15, a database 16, and an operation unit. 34, the display part 35, the audio | voice output part 37, the communication part 38, the sensor part 44, and the camera 49 are connected. The communication unit 38 may be attached at the vehicle manufacturing stage or retrofitted.

  In addition to the camera 49, a front monitoring device (not shown) for monitoring the front of the vehicle can be provided at a predetermined location at the front end of the vehicle. The forward monitoring device is constituted by a radar such as a laser radar or a millimeter wave radar, an ultrasonic sensor, or a combination thereof.

  The GPS sensor 15 detects the position of the vehicle on the earth by receiving radio waves generated by an artificial satellite, and also detects the time, the direction of the vehicle Vh0, and the like.

  Further, the sensor unit 44 includes an accelerator sensor as an engine load detection unit that detects an accelerator pedal operation amount by a driver based on an accelerator opening degree, a depression speed, and the like, and an operation amount of a brake pedal by a driver. , A brake sensor as a brake detection unit that detects the depression speed, a steering angle sensor as a turning detection unit that detects a steering wheel operation amount by a driver by a steering angle, and a vehicle speed sensor as a vehicle speed detection unit that detects a vehicle speed , A magnetic pole position sensor as a magnetic pole position detector for detecting the magnetic pole position of the rotor of the drive motor, a rotational speed sensor as a rotational speed detector for detecting the rotational speed of the motor, which is the rotational speed of the drive motor, and the drive motor Current sensor as a current detection unit for detecting current, voltage detection unit for detecting voltage (battery voltage) applied to the inverter And a voltage sensor includes lateral G sensor or the like as a lateral acceleration detecting unit for detecting a lateral acceleration of the vehicle Vh0.

  As the magnetic pole position sensor and the rotation speed sensor, a resolver, an encoder, or the like can be used. The vehicle speed can be detected by the GPS sensor 15 or the vehicle speed can be calculated based on the motor rotation speed. In this case, the vehicle speed sensor becomes unnecessary.

  Further, the sensor unit 44 includes a state of each element of the host vehicle Vh0, for example, a state of a lighting device such as a headlamp and a brake lamp, a state of a brake pad, a state of a lubricating device for lubricating lubricating oil, and driving. Various maintenance sensors that detect the state of the cooling device for cooling the motor, the state of the battery, and the like, a distance meter that detects the travel distance of the host vehicle Vh0, and the like are included.

  The own vehicle position, direction, and the like are position information of the own vehicle Vh0, and a position information detection unit that detects position information by the GPS sensor 15 is configured. In this case, traveling data is configured by managing the vehicle position, direction, and the like together with time, and traveling history data is configured by managing the traveling data in time series. In the travel data, travel history data, etc., the vehicle position is represented by coordinates.

  Further, the operation amount of the accelerator pedal, the operation amount of the brake pedal, the operation amount of the steering wheel, etc. are operation information of the vehicle Vh0 by the driver, and the operation information is obtained by the accelerator sensor, the brake sensor, the steering angle sensor, etc. An operation information detection unit for detection is configured. The vehicle speed, magnetic pole position, motor rotational speed, current, voltage, lateral acceleration and the like are vehicle state information of the host vehicle Vh0, and the vehicle speed sensor, magnetic pole position sensor, rotational speed sensor, current sensor, voltage sensor, lateral sensor A vehicle state information detection unit for detecting vehicle state information is configured by the G sensor or the like. Further, the state of each element is maintenance information of the host vehicle Vh0, and a maintenance information detection unit for detecting maintenance information is configured by the maintenance sensor. The travel distance is travel record information of the host vehicle Vh0, and a travel record information detection unit for detecting the travel record information of the host vehicle Vh0 by a distance meter is configured.

  Further, the acceleration / deceleration calculation processing means (not shown) of the vehicle information acquisition control device 11 performs acceleration / deceleration calculation processing, reads the vehicle speed, and calculates acceleration or deceleration by differentiating. A drive motor target torque calculation processing means (not shown) of the vehicle information acquisition control device 11 performs a drive motor target torque calculation process, and the operation amount of the accelerator pedal, the operation amount of the brake pedal, the motor rotation speed, the current, the voltage, etc. The drive motor target torque is calculated based on the above. In this case, acceleration, deceleration, drive motor target torque, and the like are also vehicle state information of the host vehicle Vh0, and the vehicle state for detecting vehicle state information by the acceleration / deceleration calculation processing means and the drive motor target torque calculation processing means. An information detection unit is configured.

  In addition, in a vehicle equipped with an engine, an engine rotation speed sensor for detecting the rotation speed of the engine, that is, an engine rotation speed, in a hybrid vehicle, in addition to a motor rotation speed sensor, a rotation speed of a generator. That is, a generator rotation speed sensor that detects the generator rotation speed is provided. In this case, the vehicle state information is constituted by the engine rotation speed and the generator rotation speed, and the vehicle state information detection unit is constituted by the engine rotation speed sensor and the generator rotation speed sensor.

  The database 16 includes a map database composed of a map data file (not shown), and map data is recorded in the map database. The map data includes intersection data relating to intersections, road data relating to roads, search data processed for searching, facility data relating to facilities, and the like.

  The database 16 records various information such as position information, operation information, vehicle state information, maintenance information, and driving performance information of the host vehicle Vh0 and the other vehicle Vhi, as well as a VICS (registered trademark) center. Traffic information provided by a road traffic information center (not shown) such as general information provided by an FM broadcasting station is also recorded.

  The database 16 includes a disk (not shown) such as a hard disk, a DVD, and an optical disk for recording the various data, and a read / write head for reading and writing various data. The head (not shown) is provided. Further, a memory card or the like can be used for the database 16. Each disk, memory card, and the like constitute an external storage device as a first storage device and a recording medium.

  The vehicle control unit 17 is a control device that performs overall control of the host vehicle Vh0 and a CPU 31 as an arithmetic device, a RAM 32 that is used as a working memory when the CPU 31 performs various arithmetic processes, In addition to the program for the above, a ROM 33 in which various programs for searching for a route to the destination, route guidance, etc. are recorded, a flash memory (not shown) used for recording various data, programs, etc. Prepare. The RAM 32, ROM 33, flash memory, and the like constitute an internal storage device as a second storage device. Further, an MPU can be used in place of the CPU 31.

  The operation unit 34 is used for communication with the other vehicle Vhi, the sensor unit 44, and the like when operated by a driver. The operation unit 34 is disposed independently of the display unit 35 as the operation unit 34. A keyboard, mouse, etc., not shown, can be used. Further, as the operation unit 34, a predetermined input operation is performed by touching or clicking an image operation unit such as various keys, switches, and buttons displayed as images on the screen formed in the display unit 35. It is possible to use a touch panel that can be used.

  A display is used as the display unit 35. Then, the vehicle information and other vehicle information can be displayed on various screens formed on the display unit 35, and the positions and directions of the own vehicle Vh0 and the other vehicle Vhi can be displayed on the map.

  The voice output unit 37 includes a voice synthesizer and a speaker (not shown), and various kinds of information, warnings for avoiding danger, and the like are output from the voice output unit 37 as, for example, voice synthesized by the voice synthesizer. The

  The communication unit 38 transmits predetermined information acquired between the host vehicle Vh0 and the other vehicle Vhi or the home server 21 to the other vehicle Vhi or the home server 21, or receives from the other vehicle Vhi or the home server 21. A transmitter / receiver (not shown) is provided. In the present embodiment, a wireless LAN is used as the network 63, and each information is transmitted and received between the host vehicle Vh0 and the other vehicle Vhi or the home server 21 via a hot spot. The local vehicle Vh0, the other vehicle Vhi, and the home server 21 are provided with LAN adapters, routers, and the like, and are assigned IP addresses.

  The communication unit 38 receives the traffic information transmitted from the road traffic information center as a radio beacon, an optical beacon, etc. via a radio beacon device, an optical beacon device, etc. disposed along the road. For example, a beacon receiver (not shown), an FM receiver (not shown) for receiving general information transmitted from an FM broadcasting station as FM multiplex broadcasting, and the like are also provided. Note that the beacon receiver and the FM receiver are usually unitized and arranged as a VICS receiver, but can be arranged separately.

  In this embodiment, the wireless LAN is used, but a mobile phone communication network can be used instead of the wireless LAN. In that case, each information is transmitted and received between the own vehicle Vh0 and the other vehicle Vhi or the home server 21 via the base station of the mobile phone.

  In the present embodiment, the database 16 records the map data, and information such as position information, operation information, vehicle state information, maintenance information, and traveling performance information of the host vehicle Vh0 and the other vehicle Vhi. However, a predetermined information provider, for example, an information center has the map data, and information such as position information, operation information, vehicle state information, maintenance information, and driving performance information of the own vehicle Vh0 and the other vehicle Vhi. Can be held.

  For this purpose, the information center includes a server, a communication unit connected to the server, a database, and the like, and the server includes a CPU, a RAM, a ROM, and the like as a control device and an arithmetic device. Note that an MPU can be used instead of the CPU.

  Therefore, the information center provides information, traffic information, general information, and the like collected from a plurality of vehicles (own vehicle Vh0 or other vehicle Vhi) in real time. And the communication part 38 of the own vehicle Vh0 receives and acquires the said map data transmitted from the said information center, and also each positional information of the own vehicle Vh0, operation information, vehicle state information, maintenance information, driving performance Each information such as information is received and acquired as own vehicle information, and each information such as position information, operation information, vehicle state information, maintenance information, driving performance information, etc. of other vehicle Vhi as other vehicle information can do.

  The home server 21 is installed at the operator's home, for example, as a control device, a CPU as a calculation device, a display unit as a notification device for notifying the operator of various information, an operation unit, RAM, ROM, a communication part, etc. are provided. An MPU can be used instead of the CPU, and a personal computer can be used instead of the home server 21.

  The camera 49 is composed of a CCD element, and is mounted with the optical axis facing forward to monitor the front of the host vehicle Vh0, and is traveling in front of the host vehicle Vh0. The buildings, structures, and the like are photographed as objects to be photographed, and image data of the photographed objects are generated and sent to the CPU 31. The CPU 31 reads the image data and performs image processing on the image data, thereby recognizing each object to be photographed in the image as a recognition object. In the present embodiment, a CCD element is used as the camera 49, but a C-MOS element or the like can be used.

  The vehicle information acquisition system, the vehicle control unit 17, the CPU 31, the home server 21, the information center server, and the like function as a computer singly or in combination of two or more, and based on various programs, data, and the like. Perform arithmetic processing. In addition to the database 16, the RAM 32, and the ROM 33, the third storage device is configured by the RAM, ROM, and the like of the home server 21 and the database of the information center.

  Next, the basic operation of the vehicle information acquisition system configured as described above will be described.

  2 is a flowchart showing the operation of the vehicle information acquisition system in the embodiment of the present invention, FIG. 3 is a conceptual diagram showing the operation of the situation determination processing means in the embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a diagram showing a first display example of the display unit in FIG. 5, and FIG. 5 is a diagram showing a second display example of the display unit in the embodiment of the present invention.

  First, initialization processing means (not shown) of the CPU 31 performs initialization processing and initializes various data.

  Next, a travel information recording processing unit (not shown) of the CPU 31 performs a travel information recording process, and records travel information detected as the vehicle Vh0 travels. For this purpose, the travel information recording processing unit reads each information such as position information, operation information, vehicle state information, travel performance information, etc., and records it in the database 16 as own vehicle information. Information that does not need to be continuously recorded can be temporarily recorded in the RAM 32, and automatically erased from the oldest one after a predetermined time.

  When the GPS sensor 15 has a high accuracy, the travel information recording processing means specifies the detected current location as the vehicle position as it is. However, when the GPS sensor 15 has a low accuracy, the current location trajectory and the vicinity of the current location are identified. Based on the shape, arrangement, etc. of the road, it is determined on which road the host vehicle Vh0 is located, and the host vehicle position is specified.

  Subsequently, monitoring information recording processing means (not shown) of the CPU 31 performs monitoring information recording processing and records monitoring information. For this purpose, the monitoring information recording processing means reads the image of the object imaged by the camera 49, in this embodiment, the image data of the other vehicle Vhi, and performs image processing on the image data, thereby obtaining an image. The other vehicle Vhi inside is monitored and recognized as a recognition object. Moreover, the said monitoring information recording process means can monitor the said other vehicle Vhi based on the data read from the front monitoring apparatus, and can recognize it as a recognition target object.

  Next, the monitoring information recording processing means calculates the actual position of the other vehicle Vhi based on the recognition result, for example, the position of the other vehicle Vhi on the image, the own vehicle position, etc. Record in database 16. Similarly, other vehicle monitoring information can be recorded in the RAM 32.

  The monitoring information recording processing means reads the maintenance information and records it in the database 16 as own vehicle information. Similarly, information that does not need to be continuously recorded can be temporarily recorded in the RAM 32, and automatically deleted from the oldest one after a predetermined time.

  Next, the vehicle information acquisition processing means (not shown) of the CPU 31 performs vehicle information acquisition processing and reads predetermined vehicle information from the database 16, RAM 32, etc., or predetermined vehicle information from the information center. Each information is acquired by receiving.

  Subsequently, the host vehicle information transmission processing unit (not shown) of the CPU 31 performs host vehicle information transmission processing and transmits the acquired host vehicle information to the other vehicle Vhi. Therefore, the transmission destination search processing means of the own vehicle information transmission processing means performs transmission destination search processing, searches for the IP address and port of the other vehicle Vhi, and detects the other vehicle Vhi whose port is open. Subsequently, the transmission processing means of the own vehicle information transmission processing means performs transmission processing, designates the detected IP address and port of the other vehicle Vhi, and transmits the own vehicle information via the communication unit 38 to the IP address. And to the other vehicle Vhi corresponding to the port. For this purpose, a communication unit needs to be provided in the other vehicle Vhi. However, the communication unit may be attached at the vehicle manufacturing stage or retrofitted. The own vehicle Vh0 and the other vehicle Vhi may be manufactured by the same manufacturer or manufactured by different manufacturers.

  Other vehicle information reception processing means (not shown) of the CPU 31 performs other vehicle information reception processing, and receives other vehicle information transmitted from the other vehicle Vhi via the communication unit 38. For this purpose, the port opening processing means of the other vehicle information reception processing means performs port opening processing to open the port of the vehicle control unit 17, and subsequently, the reception processing means of the other vehicle information reception processing means performs reception processing. The other vehicle information is received via the communication unit 38.

  Next, a specific vehicle selection processing unit (not shown) of the CPU 31 performs a specific vehicle selection process, analyzes the acquired other vehicle information, and selects a specific vehicle among the other vehicles Vhi as a specific vehicle Vhj (j = 1, 2, ..., n).

  For this purpose, the other vehicle detection processing means of the specific vehicle selection processing means performs other vehicle detection processing, calculates the position of the other vehicle based on each coordinate represented by the current location of the other vehicle Vhi, and determines the other vehicle Vhi. To detect.

  Subsequently, the first selection condition satisfaction determination processing means of the specific vehicle selection processing means performs a first selection condition satisfaction determination processing, and the other vehicle Vhi travels within a certain range centered on the own vehicle position. It is determined whether or not the first selection condition is satisfied depending on whether or not Therefore, the first selection condition establishment determination processing means reads the own vehicle position and the other vehicle position, and based on each coordinate, the distance Li (i = 1, 2,..., M between the own vehicle position and the other vehicle position). ) Is calculated, and it is determined whether the distance Li is shorter than the threshold value. If the distance Li is shorter than the threshold value, the first selection condition is satisfied.

  When the coordinates of the vehicle position are (x0, y0) and the coordinates of the other vehicle position are (xi, yi), the distance Li is

It is represented by

  In the present embodiment, the distance Li is a linear distance calculated based on the coordinates of the own vehicle position and the other vehicle position, but based on the road data in the map data, the distance Li You can also.

  Next, the second selection condition establishment determination processing means of the specific vehicle selection processing means performs a second selection condition establishment determination processing to determine whether the traveling direction of the host vehicle Vh0 is different from the traveling direction of the other vehicle Vhi. To determine whether the second selection condition is satisfied. For this purpose, the second selection condition establishment determination processing means determines the direction vectors B0, Bi () of the host vehicle Vh0 and the other vehicle Vhi based on the coordinates of the host vehicle position and the other vehicle position at the first and second timings. i = 1, 2,..., m) are calculated.

  Here, when the coordinate of the vehicle position at the first timing is (x0, y0) and the coordinate of the vehicle position at the second timing is (x0 ′, y0 ′), the direction vector B0 of the vehicle Vh0. Is represented by (X0, Y0),

become.

  Further, the coordinates of the other vehicle position at the first timing are (xi, yi), the coordinates of the other vehicle position at the second timing are (xi ', yi'), and the direction vector Bi of the other vehicle Vhi is (Xi , Yi)

become.

Then, the second selection condition establishment determination processing means has the direction vectors B0 and B1,
X0> 0
Xi> 0
Y0> 0
Yi> 0
If all of
X0> 0
Xi> 0
Y0 <0
Yi <0
If all of
X0 <0
Xi <0
Y0> 0
Yi> 0
If all of the above hold, and X0 <0
Xi <0
Y0 <0
Yi <0
When all of the above are satisfied, the traveling direction of the host vehicle Vh0 matches the traveling direction of the other vehicle Vhi, and the second selection condition is not satisfied. Otherwise, the traveling direction of the host vehicle Vh0 and the other Unlike the traveling direction of the vehicle Vhi, the second selection condition is satisfied.

  Further, the third selection condition establishment determination processing means of the specific vehicle selection processing means performs a third selection condition establishment determination processing, and the third selection condition is determined depending on whether or not the other vehicle Vhi is approaching the host vehicle Vh0. Determine if it is true. For this purpose, the third selection condition establishment determination processing means determines the own vehicle Vh0 and the other vehicle at the first and second timings based on the coordinates of the own vehicle position and the other vehicle position at the first and second timings. Distance Li, Li ′ between Vhi

Is calculated.

Subsequently, the third selection condition establishment determination processing means compares the distances Li and Li ′,
Li> Li ′
In this case, the other vehicle Vhi approaches the host vehicle Vh0, and the third selection condition is satisfied.

  And the said specific vehicle selection process means selects the vehicle in which the 1st-3rd selection conditions are satisfied among the other vehicles Vhi as the specific vehicle Vhj.

  Subsequently, a situation determination processing unit (not shown) of the CPU 31 performs a situation determination process. For a predetermined vehicle of the specific vehicle Vhj, in the present embodiment, a vehicle closest to the host vehicle Vh0, the vehicle Determine the situation. In addition, a notification processing unit (not shown) of the CPU 31 performs a notification process and notifies the driver of the determination result of the vehicle status.

  For this purpose, the situation determination target vehicle selection processing means of the situation determination processing means performs a situation determination target vehicle selection process, and selects the vehicle having the shortest distance Li among the specific vehicles Vhj as the situation determination target vehicle Vhx. .

  Subsequently, the communication state determination processing unit of the situation determination processing unit performs a communication state determination process, and determines whether or not the communication state between the host vehicle Vh0 and the situation determination target vehicle Vhx is good.

  When the communication state is bad, the notification processing means performs a notification process, displays on the display unit 35 that the communication state with the situation determination target vehicle Vhx is bad, and the voice output unit 37. To output to the driver and notify the driver.

  Further, the notification processing means reads other vehicle monitoring information acquired by the camera 49 or the front monitoring device and recorded in the database 16, displays the position, state, etc. of the other vehicle Vhi on the display unit 35 and outputs sound. The sound is output by the unit 37.

  On the other hand, when the communication state is good, the traveling state determination processing unit of the state determination processing unit performs a traveling state determination process, reads out other vehicle information and map data of the state determination target vehicle Vhx, and reads the other vehicle information. And based on map data, it is judged whether the driving | running | working state of the condition determination object vehicle Vhx is favorable. For this purpose, the traveling state determination processing means determines which lane on the road the state determination target vehicle Vhx is traveling based on the position information in the other vehicle information, Based on the operation information, it is determined whether or not it is going to accelerate or whether or not it is going to change the course.

  When the situation determination target vehicle Vhx is traveling on the lane in which the host vehicle Vh0 is traveling, is about to accelerate, or is about to change the course, the traveling situation determination processing means travels the situation determination target vehicle Vhx. It is determined that the state is bad, and the notification processing means displays on the display unit 35 that the running state of the situation determination target vehicle Vhx is bad, and also outputs a voice by the voice output unit 37, so that the driver Notify

  Further, the vehicle situation determination processing means of the situation determination processing means performs a vehicle situation determination process, reads other vehicle information of the situation determination target vehicle Vhx, and determines whether or not the vehicle situation of the situation determination target vehicle Vhx is good. To do. For this purpose, the vehicle situation determination processing means, based on the vehicle status information and maintenance information in the other vehicle information, the vehicle speed, magnetic pole position, motor rotation speed, current, voltage, lateral acceleration, acceleration of the situation determination target vehicle Vhx. , Deceleration, drive motor target torque and other detected values are within normal range, lighting device status, brake pad status, lubrication device status, cooling device status, battery status, etc. It is determined whether the state of is normal.

  When the detected value is not within a normal range, or when the state of each element is not normal, the vehicle situation determination processing unit determines that the vehicle situation of the situation determination target vehicle Vhx is bad, The notification processing means displays on the display unit 35 that the vehicle status of the situation determination target vehicle Vhx is defective, and outputs the result by voice by the voice output unit 37 to notify the driver.

  As described above, in the present embodiment, the situation of the other vehicle Vhi is determined and detected based on the received other vehicle information, so that the situation of the other vehicle Vhi can be detected with high accuracy. .

  In addition, when detecting the situation of the other vehicle Vhi, since there is no blind spot, there is no need to provide many sensors. Therefore, it is not necessary to maintain infrastructure, and the cost for acquiring other vehicle information can be reduced.

  Further, when the traveling state and the vehicle state of the situation determination target vehicle Vhx are both good, the notification processing means displays on the display unit 35 as shown in FIGS. 4 and 5 based on the selection by the driver. A screen is formed to display the traveling state of the host vehicle Vh0 and the situation determination target vehicle Vhx.

  For example, in FIG. 4, the vehicle speed, motor rotation speed, front wheel torque, rear wheel torque, and the like of the host vehicle Vh0 and the other vehicle Vhi are displayed. In FIG. 5, the host vehicle position p0, the other vehicle position pj of the specific vehicle Vhj (J = 1, 2,..., N) and the other vehicle position px of the situation determination target vehicle Vhx among the specific vehicles Vhj and a message indicating that the vehicle is being accelerated are displayed.

  As described above, in the present embodiment, when the traveling state or the vehicle state of the situation determination target vehicle Vhx is bad, the fact is displayed on the display unit 35 or is output by voice by the audio output unit 37. So you can avoid danger.

Next, a flowchart will be described.
Step S1 An initialization process is performed.
Step S2 A travel information recording process is performed.
Step S3: Monitor information recording processing is performed.
Step S4 Car information acquisition processing is performed.
Step S5 Car information transmission processing is performed.
Step S6 Car information reception processing is performed.
Step S7: A specific vehicle selection process is performed.
Step S8: Situation determination processing is performed.
Step S9 A notification process is performed and the process is terminated.

  In the present embodiment, the host vehicle information is transmitted to the other vehicle Vhi. However, since the host vehicle information can be transmitted to the home server 21, by operating the home server 21, Based on the vehicle information, a failure diagnosis of the host vehicle Vh0 can be performed.

  Further, since the position information of the own vehicle information can be acquired by operating the home server 21, for example, when the own vehicle Vh0 is stolen, the family is driving the own vehicle Vh0. For example, the host vehicle Vh0 can be easily searched.

  Therefore, when the own vehicle information acquisition processing unit acquires the own vehicle information, the own vehicle information transmission processing unit transmits the own vehicle information to the home server 21 via the communication unit 38. In the home server 21, the vehicle information reception processing means (not shown) of the CPU performs vehicle information reception processing, receives the vehicle information transmitted from the vehicle Vh0 via the communication unit, and A situation determination processing unit (not shown) performs situation determination processing, and determines the situation of the host vehicle Vh0 such as whether the host vehicle Vh0 is out of order or stolen based on the received host vehicle information. Therefore, the notification processing means of the CPU notifies the operator of the determination result.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a figure which shows the vehicle information acquisition system in embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle information acquisition system in embodiment of this invention. It is a conceptual diagram which shows operation | movement of the condition determination process means in embodiment of this invention. It is a figure which shows the 1st example of a display of the display part in embodiment of this invention. It is a figure which shows the 2nd example of a display of the display part in embodiment of this invention.

Explanation of symbols

21 Home server 31 CPU
38 communication unit 63 network p0 own vehicle position Vh0 own vehicle Vhi other vehicle Vhj specific vehicle Vhx situation determination target vehicle

Claims (1)

(A) own vehicle information acquisition processing means for acquiring own vehicle information comprising travel information and position information detected along with the travel of the own vehicle;
(B) own vehicle information transmission processing means for transmitting the acquired own vehicle information to another vehicle via a communication unit;
(C) Other vehicle information reception processing means for receiving other vehicle information transmitted from the other vehicle via the communication unit;
(D) based on position information in the other vehicle information , a specific vehicle selection processing means for selecting a specific vehicle that satisfies a selection condition among the other vehicles;
(E) situation determination processing means for determining a situation of the vehicle for a predetermined vehicle among the specific vehicles;
(F) notification processing means for notifying the driver of the determination result of the vehicle status;
(G) The specific vehicle selection processing means determines whether the other vehicle is traveling within a certain range centered on the own vehicle position, whether the traveling direction of the own vehicle is different from the traveling direction of the other vehicle, and Judges whether another vehicle is approaching the host vehicle, is traveling within a certain range centered on the host vehicle position, and determines that the traveling direction of the host vehicle is different from the traveling direction and is approaching the host vehicle select the other vehicle is a specified vehicle,
(H) The situation determination processing means selects a vehicle closest to the own vehicle among the specific vehicles as a situation determination target vehicle, and determines a communication state between the own vehicle and the situation determination target vehicle. and, if the communication state is normal, on the basis of the position information and operation information of the other vehicle information of the status determination target vehicle, as well as determining the running condition indicating a traveling state on a road status determination target vehicle , Based on the vehicle state information and maintenance information in the other vehicle information of the situation determination target vehicle , determine the situation of the vehicle representing the state of the situation determination target vehicle ,
(I) the notification processing unit, when the communication state is not normal, if the running state of the status determination target vehicle is not normal, or if the status of status determination of the target vehicle the vehicle is not normal, the driver to that effect The vehicle information acquisition system characterized by notifying .

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