JP2014048845A - Vehicle information system and center-side device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle information system and a center-side device with which information obtained from vehicles can be effectively used.SOLUTION: A center-side device receives and accumulates information sent from a vehicle-side device, and performs predetermined analysis processes on information on driving conditions for respective points using the accumulated information and generates analysis results. The analysis result of a point located in a specific area that includes a position indicated by current position information included in the information received from the vehicle-side device installed in a target vehicle that is one of vehicles with vehicle-side devices installed and the received information are compared, and information to be sent to the vehicle-side device installed in the target vehicle is generated.

Description

  The present invention relates to a vehicle information system and a center side device.

  In recent vehicles, electronic control is widely performed, and various types of vehicle information are shared via a network in the vehicle such as a CAN (Control Area Network). Such various vehicle information includes, for example, a wide range of information such as brake operation, wiper operation, position information acquired by the car navigation system, and whether or not lights are turned on.

  Patent Document 1 includes a navigation device and a navigation server. When the navigation server has a primary disaster caution point as an entry point from the current position of the vehicle to the disaster occurrence area on the searched route, By communicating with the device, the disaster occurrence mesh colored according to the level of the disaster level and the primary disaster sign indicating the primary disaster content arranged at the primary disaster caution point are displayed on the navigation device. Technology is disclosed.

JP 2010-054386 A

  Conventionally, however, information received from vehicles has been used for generating real-time information indicating traffic jams, accidents, etc., but has not been accumulated and used for analysis and has not been used effectively. .

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle information system and a center side device that can effectively use information obtained from a vehicle.

  The present invention for solving the problems of the above-described conventional example is a vehicle information system including a vehicle side device and a center side device, wherein the vehicle side device is mounted on a vehicle, information on a current position, vehicle Acquisition means for acquiring information related to the driving situation, transmission means for transmitting the acquired information to the center side apparatus, reception means for receiving information from the center side apparatus, and output for outputting the received information Means for receiving the information transmitted by the vehicle-side device, storage means for storing the received information, and using the stored information, the center side device A vehicle-side device mounted on the vehicle of interest, with one of the vehicles equipped with the analysis means for generating information and an analysis means that executes a predetermined analysis process on the information relating to the driving situation and the vehicle-side device as the vehicle of interest Should be transmitted to the vehicle-side device mounted on the vehicle of interest by comparing the analysis result regarding the point within a predetermined range including the position represented by the current position information included in the received information with the received information. Determining means for determining whether or not to generate information; and generating means for generating information when the determining means determines that information to be transmitted to the vehicle-side device mounted on the vehicle of interest is generated. And transmitting means for transmitting the generated information when the generating means generates information.

  One embodiment of the present invention is a center-side device that is communicably connected to a vehicle-side device mounted on a vehicle, and is transmitted by the vehicle-side device and is a current position of the vehicle on which the vehicle-side device is mounted. Information on the driving situation of the vehicle, information on the driving situation of the vehicle, storage means for storing the received information, and information on the driving situation at each point using the stored information. Included in the information received from the vehicle-side device mounted on the target vehicle, with the analysis means for executing the predetermined analysis processing and generating one of the analysis results as one of the vehicles mounted with the vehicle-side device as the target vehicle Whether to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest by comparing the analysis result regarding the point in the predetermined range including the position represented by the current position information and the received information Determining means for determining whether the information to be transmitted to the vehicle-side device mounted on the vehicle of interest is generated by the determining means; and the generating means for generating the information; And transmitting means for transmitting the generated information when the information is generated.

  Here, the information related to the driving situation of the vehicle received by the receiving means includes information representing the operating speed of the vehicle, the analyzing means calculates an average of the operating speed of the vehicle, and the determining means It is good also as judging whether the information which should be transmitted to the vehicle side apparatus carried in the attention vehicle is generated by comparison with the operation speed of the attention vehicle, and the average.

  According to the present invention, information obtained from a vehicle can be used effectively.

It is a block diagram showing the structural example of the vehicle information system which concerns on embodiment of this invention. It is a block diagram showing the structural example of the center side apparatus which concerns on embodiment of this invention. It is explanatory drawing showing the example of a setting of the area which the center side apparatus which concerns on embodiment of this invention handles. It is a flowchart showing the operation example of the vehicle information system which concerns on embodiment of this invention. It is a flowchart figure showing the operation example of the center side apparatus which concerns on embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. As illustrated in FIG. 1, the vehicle information system according to the embodiment of the present invention includes a center side device 1 and vehicle side devices 3a, 3b,.

  The vehicle side device 3 includes, for example, a control unit 41, a storage unit 42, a network interface 43, a communication unit 44, and a display unit 45. Here, the control unit 41 is a program control device such as a CPU, and operates according to a program stored in the storage unit 42. Specifically, in the present embodiment, the control unit 41 is repeatedly performed at predetermined timings, identification information for identifying the vehicle 2, position information indicating the current position of the vehicle, vehicle speed, and presence / absence of a wiper operation. Information on the driving status such as whether or not the light is turned on, the brake depression ratio, and the accelerator opening is acquired via the network interface 43.

  And the control part 41 transmits the information regarding the positional information and driving condition which were acquired with respect to the center side apparatus 1 via the communication part 44. FIG. Further, the control unit 41 receives information transmitted by the center side device 1 via the communication unit 44, and outputs the received information on the display unit 45.

  The storage unit 42 is a memory device or the like, and holds a program executed by the control unit 41. This program may be provided via a computer-readable recording medium such as a DVD-ROM and stored in the storage unit 42. The program may be provided from a server on the Internet via a network and stored in the storage unit 42. Further, the storage unit 42 also operates as a work memory for the control unit 41.

  The network interface 43 is connected to a network (such as CAN) in the vehicle. The network interface 43 receives various types of information from a vehicle control device (ECU (Engine Control Unit, etc.)) or a car navigation system arranged in each part of the vehicle via the network in the vehicle, and the control unit 41 is output.

  The communication unit 44 is connected to a mobile phone communication network or the like, and transmits and receives various types of information to and from the center side device 1 via an external network. The communication unit 44 transmits the instructed information to the center side device 1 in accordance with the instruction input from the control unit 41. Further, the communication unit 44 outputs information received from the center side device 1 to the control unit 41 via the mobile phone communication network.

  The display unit 45 displays and outputs information on a display screen such as a car navigation system provided in the vehicle 2 in accordance with an instruction input from the control unit 41. As an example, the display unit 45 outputs a video signal for displaying the instructed information in accordance with an instruction input from the control unit 41. The display unit 45 may include a display and display information on the display in accordance with an instruction input from the control unit 41.

  As illustrated in FIG. 2, the center apparatus 1 includes a control unit 11, a storage unit 12, and a communication unit 13. The control unit 11 is a program control device such as a CPU, and operates according to a program stored in the storage unit 12.

  In the present embodiment, the control unit 11 receives from the communication unit 13 identification information for identifying the vehicle 2 on which the vehicle side device 3 is received, which is received by the communication unit 13 from the vehicle side device 3, and the current position of the vehicle. Position information indicating the vehicle speed, the presence / absence of a wiper operation, the presence / absence of lighting, the brake depression ratio, the accelerator opening degree, and other information related to the driving situation. Then, the control unit 11 accumulates the received information in the storage unit 12.

  Moreover, this control part 11 performs the analysis process predetermined about the information regarding the driving | running state for every point using the information accumulate | stored in the said memory | storage part 12, and produces | generates an analysis result. Further, the control unit 11 sets one of the vehicles on which the vehicle-side device is mounted as a target vehicle, and a predetermined range including a position represented by information on the current position included in the information received from the vehicle-side device mounted on the target vehicle. Whether or not to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest is determined based on a comparison between the analysis result relating to the point and the received information. When it is determined by this determination that information to be transmitted to the vehicle-side device mounted on the vehicle of interest is generated, the information is generated, and the generated information is transmitted. The specific processing contents of the control unit 11 will be described later.

  The storage unit 12 includes a memory device and a disk device. The storage unit 12 holds a program executed by the control unit 11. The storage unit 12 stores and holds information accumulated by the control unit 11. Further, the storage unit 12 includes a memory device that operates as a work memory of the control unit 11.

  The communication unit 13 performs communication with the vehicle side device 3. Specifically, the communication unit 13 is a network interface or the like, and outputs information received from the vehicle side device 3 to the control unit 11 via the Internet or a mobile phone communication network, for example. The communication unit 13 transmits information to the vehicle-side device 3 that is the instructed destination according to an instruction input from the control unit 11 via, for example, the Internet or a mobile phone communication network.

  Next, operation | movement of the control part 11 of the center side apparatus 1 in this Embodiment is described. The control unit 11 receives the identification information for identifying the vehicle 2 on which the vehicle side device 3 is mounted, the position information indicating the current position of the vehicle, and the information on the driving situation, received from the vehicle side device 3. Here, the information related to the driving situation includes at least a part of the vehicle speed, the presence / absence of the wiper operation, the presence / absence of lighting, the brake depression ratio, the accelerator opening, and the like.

  Then, the control unit 11 stores the received identification information, position information, and information on the driving situation in the storage unit 12 in association with each other. Specifically, the control unit 11 may store the received information in association with each other in the order of reception. The control unit 11 executes a predetermined analysis process based on the accumulated information. As an example, the analysis process is as follows. That is, the control unit 11 refers to the position information included in the accumulated information and classifies the position information for each predetermined region.

  Specifically, the region used when classifying the position information is determined based on the map information. As an example, the map information may be obtained by dividing the map information into rectangular regions having a uniform size. In another example, an area in the vicinity of the road on the map may be divided into sections of a predetermined distance. The example illustrated in FIG. 3 is an example in which a region in the vicinity of a road on the map (a range of a predetermined distance (for example, 10 m) from the center line of each road) is divided into sections of a predetermined distance (for example, 500 m). Each of the regions obtained by the division is a region to which the location information is classified.

  The control part 11 totals the information regarding the driving | running state linked | related with the positional information classified into each area for every area | region which is a classification | category destination. For example, for each area i (i = 1, 2,...) That is a classification destination, the control unit 11 counts the number Ni of position information classified into the area i. The control unit 11 also includes, for example, the number ni_speed of information related to the driving situation where the vehicle speed exceeds a predetermined vehicle speed threshold, and the number ni_break of information related to the driving situation where the brake depression ratio exceeds a predetermined ratio threshold. The ratio ri_speed = ni_speed / Ni of these vehicles, ri_break = ni_break / Ni, etc. are obtained as analysis results. When there is a predetermined warning cause such as the ratio ri_speed or ri_break exceeding a predetermined value, the control unit 11 determines that area i (hereinafter, these areas are designated as specific areas for distinction). Find out). Here, the cause of warning refers to what is determined to be warned based on information on the driving situation.

  Moreover, whenever the communication part 13 outputs the information which the communication part 13 received from the vehicle side apparatus 3, the control part 11 refers to the positional information on the vehicle contained in the said information, and the area containing the said positional information is a specific area. Determine whether. When the region including the vehicle position information included in the information output from the communication unit 13 is a specific region, the control unit 11 includes the vehicle-side device 3 that is the transmission source of the information (within the specific region). Information to be transmitted to a vehicle side device 3) mounted on a certain vehicle 2 is generated.

  Specifically, the control unit 11 includes a region (ri_break = ni_break) in which the vehicle 2 on which the vehicle side device 3 that is the transmission source of the information is mounted has a vehicle with a driving situation in which the brake depression ratio exceeds a predetermined threshold. If it is located in a specific area where / N exceeds a predetermined value), character string information such as “a sudden braking frequent occurrence area” is sent to the vehicle side device 3. That is, the control unit 11 provides information related to the cause of warning in the specific area where the vehicle 2 on which the vehicle-side device 3 is mounted is located.

  The system according to the present embodiment is configured as described above, and operates as follows. As illustrated in FIG. 4, the vehicle side device 3 repeatedly obtains identification information for identifying the vehicle 2, position information indicating the current position of the vehicle, and information related to the driving situation, at predetermined timings ( S1). Here, the information regarding the driving situation includes vehicle speed, presence / absence of wiper operation, presence / absence of lighting, brake depression ratio, accelerator opening, and the like. The vehicle side device 3 transmits the identification information, the position information, and the information regarding the driving situation to the center side device 1 (S2).

  The center side device 1 accumulates these pieces of information received from the vehicle side device 3 of each vehicle 2 in association with each other (S3). In addition, referring to the accumulated information, for each predetermined area, information on the driving situation associated with the position information included in the area is analyzed (S4). Here, as an example of analysis, as already described, the center side apparatus 1 includes position information included in the area i among the accumulated information for each area i (i = 1, 2,...). The number of information Ni is counted. The control unit 11 also includes the number ni_speed of information related to the driving situation in which the vehicle speed associated with the position information included in the area i exceeds a predetermined vehicle speed threshold, and the position information included in the area i. The number ni_break of information relating to the driving situation in which the brake depression ratio associated with the vehicle exceeds a predetermined ratio threshold is obtained, and the analysis results such as the ratio ri_speed = ni_speed / Ni of these vehicles and ri_break = ni_break / Ni Ask for.

  Further, the center-side device 1 may calculate and obtain the average value Save_i of the vehicle speed and the standard deviation Sσ_i as one of the analysis results for each region i (i = 1, 2,...). Further, the center-side device 1 finds an area (specific area) having a predetermined warning cause such as the above calculated ratio ri_speed or ri_break exceeding a predetermined value, and specifies the area that has become the specific area. Warning cause information may be stored in association with (regional identification information i may be used).

  Further, every time information is received from the vehicle-side device 3, the center-side device 1 performs the process illustrated in FIG. 5 with the vehicle 2 on which the vehicle-side device 3 that is the transmission source of the received information is mounted as the vehicle of interest. . That is, the center side device 1 refers to the position information of the vehicle of interest included in the received information, and finds an area including the position represented by the position information (S11). Then, it is checked whether or not the area is a specific area (whether or not there is a warning cause) (S12). If the area is not a specific area, the process ends. In this case, the center side apparatus 1 performs the process of storing the information as illustrated in FIG.

  On the other hand, when the said area is a specific area in process S12, the center side apparatus 1 transmits the information which concerns on a warning cause with respect to the vehicle side apparatus 3 of an attention vehicle (S13). For example, if the ratio ri_break of information related to the driving situation in which the brake depression amount exceeds a predetermined threshold as a cause of warning is related to the area, a character string such as “It is a sudden braking frequent occurrence zone” Send information. The vehicle side device 3 may receive this information and output it as a display output or an audio signal.

  Further, in the center side apparatus 1, attention is paid to the case where the average value Save_i and the standard deviation Sσ_i of the vehicle speed are calculated and calculated for each region i (i = 1, 2,...) As analysis processing. The position information included in the information received from the vehicle side device 3 of the vehicle and the speed information S included in the information indicating the driving situation are extracted. Then, the center-side device 1 specifies the area i including the extracted position information, and acquires the average value Save_i of the vehicle speed in the area i and the standard deviation Sσ_i.

  The center-side device 1 uses a predetermined natural number n, and when the extracted vehicle speed information S is S> Save_i + n · Sσ_i, the speed of the vehicle of interest is higher than that of an average vehicle traveling in the area. It is determined that the number is excessive, and information indicating that is transmitted to the vehicle-side device 3 of the vehicle of interest.

In addition, although the speed of the vehicle 2 was described here, you may perform the same process about other information, for example, accelerator opening. Further, the analysis process may be performed for each region according to the driving conditions determined by the presence or absence of the wiper operation or the presence or absence of lighting of the light. That is, the above-mentioned ri_speed, ri_break, average value Save_i and standard deviation Sσ_i of the speed are
(1) No wiper operation and no lighting (no precipitation in daytime)
(2) Wiper operation and no lighting (daytime precipitation)
(3) No wiper operation and lights on (no precipitation at night)
(4) With wiper operation and light on (with precipitation at night)
It is calculated | required according to each driving | running condition of this, and the presence or absence of a warning cause may be calculated | required according to said each condition of said (1) to (4).

  In this case, when the center-side device 1 receives information from the vehicle-side device 3, the vehicle 2 on which the vehicle-side device 3 is mounted is set as the attention vehicle. Then, the center-side device 1 refers to the position information of the vehicle of interest included in the received information, and finds an area including the position represented by the position information (area where the vehicle of interest is located). Also, information representing the presence / absence of a wiper operation and the presence / absence of lighting of the light included in the information is extracted. The center side device 1 checks whether or not there is a warning cause under the driving conditions corresponding to the presence or absence of the wiper operation and the lighting of the light in the area where the vehicle of interest is located.

  Here, if there is a warning cause in the region and driving conditions, the center side device 1 transmits information representing the warning cause to the vehicle side device 3 of the vehicle of interest. Thus, for example, in a region where sudden braking increases when there is a large amount of precipitation at night, this can be notified under that condition.

  Furthermore, when the time information is included in the information received from the vehicle side device 3, or when the center side device 1 stores the information received from the vehicle side device 3, the information including the received time is stored. In such a case, analysis for each time zone may be performed.

  Further, a plurality of threshold values are set in relation to the number of information N_i for each region i, and whether or not the analysis is performed for each time zone each time each threshold value is exceeded, or as described above Whether or not to perform analysis according to various operating conditions may be varied. For example, in a region i where the number of information N_i is smaller than a predetermined first threshold value θ1, the analysis according to the time zone and the operating condition is not performed, and the first threshold value θ1 is exceeded. When the threshold value θ2 (θ2> θ1) is not exceeded, that is, in the region where θ2> N_i> θ1, the analysis according to the operating conditions is performed, but the analysis according to the time zone is not performed. The analysis method may be different for each.

  Further, in the description so far, the analysis result regarding the point in the predetermined range including the current position of the vehicle of interest that is the information transmission source is obtained by dividing the region, but this embodiment is not limited to this. I can't. For example, when the center-side apparatus 1 acquires the current position of the vehicle of interest, the center-side apparatus 1 is associated with position information within a range of, for example, a radius r kilometers (r is set in advance) from the current position. Extract information representing driving conditions. Then, an analysis result may be generated based on the extracted information and compared with information received from the vehicle of interest.

1 center side device, 2 vehicle, 3 vehicle side device, 11, 41 control unit, 12, 42 storage unit, 43 network interface, 44 display unit, 13, 45 communication unit.

Claims (3)

A vehicle information system including a vehicle side device and a center side device,
The vehicle side device is mounted on a vehicle,
An acquisition means for acquiring current position information and information related to a driving situation of the vehicle;
Transmitting means for transmitting the acquired information to a center side device;
Receiving means for receiving information from the center side device;
Output means for outputting the received information;
Including
The center side device is:
Receiving means for receiving information transmitted by the vehicle side device;
Storage means for storing the received information;
Using the accumulated information, an analysis unit that performs a predetermined analysis process on information related to the driving situation for each point and generates an analysis result;
Analysis result regarding a point in a predetermined range including the position represented by the information of the current position included in the information received from the vehicle side device mounted on the target vehicle, with one of the vehicles mounted with the vehicle side device as the target vehicle Determining means for determining whether to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest by comparing with the received information;
Generating means for generating information when it is determined by the determining means to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest;
A transmission unit that transmits the generated information when the generation unit generates the information;
A vehicle information system. A center-side device communicably connected to a vehicle-side device mounted on a vehicle,
Receiving means for receiving information on the current position of the vehicle on which the vehicle-side device is mounted and information related to the driving situation of the vehicle, transmitted by the vehicle-side device;
Storage means for storing the received information;
Using the accumulated information, an analysis unit that performs a predetermined analysis process on information related to the driving situation for each point and generates an analysis result;
Analysis result regarding a point in a predetermined range including the position represented by the information of the current position included in the information received from the vehicle side device mounted on the target vehicle, with one of the vehicles mounted with the vehicle side device as the target vehicle Determining means for determining whether to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest by comparing with the received information;
Generating means for generating information when it is determined by the determining means to generate information to be transmitted to the vehicle-side device mounted on the vehicle of interest;
A transmission unit that transmits the generated information when the generation unit generates the information;
A center-side device. The center side device according to claim 2,
The information related to the driving situation of the vehicle received by the receiving means includes information indicating the operation speed of the vehicle,
The analyzing means calculates an average of vehicle operating speed,
The center side apparatus which judges whether the said judgment means produces | generates the information which should be transmitted to the vehicle side apparatus mounted in the attention vehicle by the comparison with the operation speed of the said attention vehicle, and the said average.

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