JP2017182678A - Driving state determination device, driving state determination method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving state determination device capable of determining with improved accuracy whether a vehicle is in a dangerous driving state.SOLUTION: A driving state determination device receives vehicle detection information including at least sensing information and positional information from a determination object vehicle and a plurality of other vehicles other than the determination object vehicle. Then, it determines the driving state of the determination object vehicle on the basis of the sensing information and positional information included in the vehicle detection information received from the other vehicles and the vehicle detection information obtained from the determination object vehicle travelling at a position indicated by the positional information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an operation state determination device, an operation state determination method, and a program.

  An apparatus for determining a driving state of a vehicle has been studied for the purpose of improving safety when driving a vehicle such as an automobile. For example, Patent Document 1 discloses a technique for preventing a driver from relying too much on a safety device. Patent Document 2 discloses a technique for monitoring a driver, detecting a current driving situation of a vehicle, and transmitting a warning signal only in a predetermined driving situation when a driver's attention defect is confirmed. Yes.

JP 2008-107974 A Special table 2014-532930 gazette

  There is a need for a technique for determining the driving state of a vehicle with higher accuracy as described above.

  Then, this invention aims at providing the driving | running state determination apparatus, the driving | running state determination method, and program which can solve the above-mentioned subject.

  According to the first aspect of the present invention, the driving state determination device receives vehicle detection information including at least sensing information and position information from the determination target vehicle and a plurality of other vehicles other than the determination target vehicle. Based on the information receiving unit, the sensing information included in the vehicle detection information received from the other vehicle, the position information, and the vehicle detection information acquired from the determination target vehicle traveling at the position indicated by the position information. And a driving state determination unit that determines the driving state of the determination target vehicle.

  According to the second aspect of the present invention, the driving state determination method receives vehicle detection information including at least sensing information and position information from a determination target vehicle and a plurality of other vehicles other than the determination target vehicle. The determination target based on the sensing information included in the vehicle detection information received from the other vehicle, the position information, and the vehicle detection information acquired from the determination target vehicle traveling at the position indicated by the position information. The driving state of the vehicle is determined.

  According to the third aspect of the present invention, the program causes the computer of the driving state determination device to detect vehicle detection information including at least sensing information and position information as a determination target vehicle and a plurality of other than the determination target vehicle. Vehicle detection information receiving means for receiving from a vehicle, the vehicle acquired from the determination target vehicle traveling in the sensing information, the position information, and the position indicated by the position information included in the vehicle detection information received from the other vehicle Based on the detection information, it is made to function as driving state determination means for determining the driving state of the determination target vehicle.

  According to the present invention, based on vehicle detection information including at least sensing information and position information received from a plurality of other vehicles and vehicle detection information received from the determination target vehicle, a position where the determination target vehicle is traveling The driving state of the determination target vehicle can be determined with higher accuracy.

It is a figure which shows the outline of the driving | running state determination system by one Embodiment of this invention. It is a functional block diagram of the driving | running state determination apparatus by one Embodiment of this invention. It is a figure which shows the hardware constitutions of the driving | running state determination apparatus by one Embodiment of this invention. It is a figure which shows the processing flow of the driving | running state determination apparatus by one Embodiment of this invention. It is a figure which shows the example of the data table by one Embodiment of this invention. It is a figure which shows the minimum structure of the driving | running state determination apparatus by one Embodiment of this invention.

Hereinafter, an operation state determination apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an operation state determination system including an operation state determination device according to the present embodiment.
A driving state determination system 100 shown in FIG. 1 includes a driving state determination device 1 and a vehicle 2. The vehicle 2 is equipped with an ECU (Engine Control Unit) 21 and various sensors 22. For example, the ECU 21 outputs a vehicle speed pulse to the sensor. The sensor 22 senses the vehicle speed from the vehicle speed pulse. Alternatively, the sensor 22 receives a signal from a positioning satellite such as GPS (Global Positioning System) and calculates the position of the vehicle. The vehicle speed and position are one aspect of the sensing information. The sensing information may include various information such as acceleration, object detection information, human detection information, captured images, road surface unevenness information, weather information, wind speed, and temperature in addition to vehicle speed and position. The vehicle 2 may include a plurality of different sensors 22 that can detect the various sensing information. The vehicle 2 transmits vehicle detection information including at least sensing information and position information detected by the sensor 22 to the driving state determination device 1. The vehicle 2 is communicatively connected to the driving state determination device 1 via a public communication network such as a wireless network or a wired network.

  The driving state determination device 1 is based on sensing information and position information included in vehicle detection information received from a plurality of vehicles 2, and vehicle detection information acquired from a determination target vehicle 2A that travels a position indicated by the position information. The driving state of the determination target vehicle 2A is determined. The processing result of the driving state determination device 1 is used by an administrator who manages the driver. The manager examines the driving state of the driver using the processing result of the driving state determination device 1 and gives instructions on safe driving to the driver. The driving state determination device 1 is a computer server or the like provided in a data center or the like. The driving state determination device 1 may determine the driving state of the vehicle 2 using information acquired from devices other than the vehicle 2 such as geographic information and weather information.

FIG. 2 is a functional block diagram of the operating state determination apparatus according to the present embodiment.
The driving state determination device 1 is a computer. The operation state determination device 1 stores an operation state determination program. The CPU of the driving state determination device 1 executes a driving state determination program based on a user operation. The driving state determination device 1 exhibits the functions of the vehicle detection information reception unit 11, the threshold determination unit 12, the sensing information complementing unit 13, and the sensing information correction unit 14 illustrated in FIG. 2 by executing the driving state determination program. The driving state determination device 1 includes a database 16.

The vehicle detection information receiving unit 11 receives vehicle detection information including at least sensing information and position information of the vehicle 2 from the determination target vehicle 2 </ b> A and a plurality of other vehicles 2.
The threshold value determination unit 12 determines a threshold value for determining the driving state using sensing information or the like.
The sensing information complementing unit 13 supplements sensing information detected in the determination target vehicle 2A.
The sensing information correction unit 14 corrects the sensing information detected in the determination target vehicle 2A.
The driving state determination unit 15 determines the driving state of the determination target vehicle 2A based on the vehicle detection information received from the plurality of vehicles 2 and the vehicle detection information acquired from the determination target vehicle 2A.

FIG. 3 is a diagram illustrating a hardware configuration of the operation state determination device.
As shown in FIG. 3, the operating state determination device 1 includes a CPU (Central Processing Unit) 201, an IF (Interface) 202, a communication module 203, a ROM (Read Only Memory) 204, a RAM (Random Access Memory) 205, an HDD (Hard). Disk Drive) 206 and the like. The communication module 203 is hardware for communicating with the vehicle 2. The ROM 204, RAM 205, and HDD 206 constitute the database 16.

FIG. 4 is a diagram illustrating a processing flow of the operation state determination device.
Next, the process of the driving | running state determination apparatus 1 is demonstrated.
The driving state determination device 1 acquires vehicle detection information from the vehicle 2 (step S101). The vehicle detection information includes the ID, position and sensing information of the vehicle 2. When the driving state determination device 1 receives vehicle detection information from a plurality of different vehicles 2, the driving state determination device 1 stores the vehicle detection information in the database 16 (step S102). For example, the database 16 may record a data table in which the ID of each vehicle 2, the latitude / longitude as position information, and the sensing information are associated with each other. There are various methods for creating the data table, but the data table may be created in any way. Thereby, the data table in the database 16 is created based on the vehicle detection information obtained from the numerous vehicles 2.

FIG. 5 is a diagram illustrating an example of a data table.
As an example, the data table stores a vehicle ID, time, latitude and longitude, and a plurality of sensing information in association with each other as shown in FIG. The time may be information of year / month / day / hour / minute / second. Information other than the information shown in FIG. 5 may be recorded in association with the vehicle ID.

  The driving state determination unit 15 acquires, for example, the ID of the determination target vehicle 2A among the vehicles 2 by an operation of the administrator or the like (step S103). The driving state determination unit 15 starts the determination process of the driving state of the determination target vehicle 2A indicated by the ID. The driving state determination unit 15 determines whether sensing information indicating an abnormal value is detected based on the sensing information and the threshold value (step S104). For example, if the sensing information is acceleration, the driving state determination unit 15 determines whether the acceleration exceeds the upper limit threshold. Alternatively, for example, if the sensing information is a speed, the driving state determination unit 15 determines whether the speed exceeds an upper limit threshold. Alternatively, for example, if the sensing information is a value indicating a road uneven state, the driving state determination unit 15 determines whether the value indicating the uneven state exceeds an upper threshold. The uneven state may be a combination of acceleration and time. For example, if the state of repeatedly exceeding the acceleration of the predetermined upper limit threshold and the lower limit continues for a predetermined upper limit time, it is determined that the uneven state has exceeded the upper limit threshold. Sensing information that exceeds the upper threshold is referred to as specific sensing information. The threshold value may be a threshold value for determining a dangerous driving state. The upper limit threshold is mainly used in the following processing flow, but depending on the sensing information, the lower threshold is used to determine whether the value indicated by the sensing information is lower than the lower threshold. You may determine with the sensing information which shows a value being detected. When the sensing information is acceleration, the acceleration may be acceleration in the front-rear direction of the vehicle or acceleration in the vertical direction. If the longitudinal acceleration indicates an abnormal value, the driving state determination unit 15 may determine that the driving state of the accelerator operation or the brake operation of the determination target vehicle 2A is abnormal. When the vertical acceleration indicates an abnormal value, the driving state determination unit 15 may determine that the state of the road surface on which the determination target vehicle 2A travels is abnormal.

  When the sensing information of the determination target vehicle 2 </ b> A exceeds the threshold (when the upper limit threshold is exceeded or when the sensing information is equal to or lower than the lower limit threshold), the driving state determination unit 15 detects the sensing information indicating an abnormal value. The time when the sensing information exceeding the threshold is received is specified as the determination target time (step S105). The determination target time may indicate only a specific time or may have a time range. Further, the determination target time is a predetermined time later (time indicating the future) than the time when sensing information indicating the abnormal value is detected when the sensing information of the determination target vehicle 2A exceeds the threshold. It may be a time, or a time before a predetermined time (a time indicating the past). The driving state determination unit 15 acquires the latitude and longitude from the vehicle detection information received from the determination target vehicle 2A at the determination target time (step S106). The latitude and longitude are referred to as determination target positions. The determination target position may include different latitudes and longitudes indicated by position information included in the plurality of vehicle detection information received from the determination target vehicle 2A at the determination target time. The driving state determination unit 15 is included in the time indicated by the determination target time among the combinations of time and position recorded in the data table in association with IDs of all other vehicles 2 other than the determination target vehicle 2A. The ID of the other vehicle 2 recorded in association with the combination of the time and the latitude and longitude included in the determination target position is specified (step S107). The driving state determination unit 15 acquires the sensing information recorded in the data table in association with each identified time included in the ID of the identified other vehicle 2 and the determination target time.

  The driving state determination part 15 acquires each value of specific sensing information among the sensing information acquired about the other vehicle 2 specified. Hereinafter, the other specified vehicle 2 is referred to as a specific vehicle 2B. The driving state determination unit 15 determines whether the value of the specific sensing information of the specific vehicle 2B exceeds a threshold value (step S108). The driving state determination unit 15 specifies the number of the specific vehicles 2B in which the value of the specific sensing information acquired from the specific vehicle 2B exceeds the threshold similarly to the value of the specific sensing information of the determination target vehicle 2A (step S109). . The driving state determination unit 15 determines whether or not the specific sensing information obtained from the specific vehicle 2B has a large number of the specific vehicles 2B exceeding the threshold in the same manner as the specific sensing information obtained from the determination target vehicle 2A (Step S1). S110). When the number of the specific vehicles 2B determined that the specific sensing information of the specific vehicle 2B exceeds the threshold similarly to the specific sensing information of the determination target vehicle 2A is large, the driving state determination unit 15 It is determined that the risk determination based on the specific sensing information obtained from 2A is alleviated (step S111).

  When the number of the specific vehicles 2B exceeding the threshold is large, for example, when the number of the specific vehicles 2B is greater than or equal to the threshold, or the number of the specific vehicles 2B whose specific sensing information exceeds the threshold is among all the specific vehicles 2B It may be a case where the ratio is equal to or greater than a predetermined ratio. When the number of the specific vehicles 2B whose specific sensing information value exceeds the threshold value is large, there is a possibility that the specific sensing information value obtained from the determination target vehicle 2A exceeds the threshold value due to some environment. For example, when unevenness occurs on the road after snowfall, the value of the uneven state in which almost all the vehicles repeat the state where the upper limit threshold is exceeded and the lower limit threshold is not reached at the same position is detected. Further, when the degree of decrease in acceleration per unit time in many specific vehicles 2B exceeds the upper limit threshold, it can be determined that the traffic situation requires sudden braking due to traffic congestion or the like. In such a case, the driving state determination unit 15 determines that the risk determination is eased so as not to determine that a dangerous driving is performed based on the value based on the specific sensing information obtained from the determination target vehicle 2A.

  When the driving state determination unit 15 determines to reduce the risk determination, the driving state determination unit 15 outputs identification information indicating which sensing information is the specific sensing information to the threshold determination unit 12. The threshold value determination unit 12 performs a threshold value update process according to the specific sensing information (step S112). For example, if the specific sensing information is a speed, the upper limit threshold of the speed is increased so that a higher speed is not judged as dangerous. Or if it is an acceleration, the upper limit threshold of acceleration is increased so as not to judge that even a larger acceleration is dangerous. Alternatively, if the specific sensing information is an uneven state value, the acceleration indicated by the upper limit threshold is increased, the acceleration value indicated by the lower limit threshold is decreased, and the duration value is increased. The threshold value determination unit 12 outputs the updated threshold value to the driving state determination unit 15.

  The driving state determination unit 15 determines whether the value of the specific sensing information of the determination target vehicle 2A exceeds the updated threshold value (step S113). The driving state determination unit 15 determines that there is a possibility of dangerous driving when the value of the specific sensing information of the determination target vehicle 2A exceeds the updated threshold value (step S114). On the other hand, when the value of the specific sensing information of the determination target vehicle 2A does not exceed the updated threshold value, the driving state determination unit 15 determines that there is no possibility of dangerous driving (step S115). The driving state determination unit 15 sets the determination result in which the ID of the determination target vehicle 2A, the determination target time, the determination target position, and information indicating the possibility of dangerous driving or the possibility of dangerous driving are associated with each other. It records in the database 16 (step S116). When the driving state determination unit 15 determines the driving state in real time, the driving state determination unit 15 may output a determination result to the determination target vehicle 2A.

  According to the above processing, the driving state determination apparatus 1 determines the determination target vehicle 2A based on the same sensing information obtained from the specific vehicle 2B even if the sensing information obtained from the determination target vehicle 2A exceeds the threshold value. It is determined whether the value of the sensing information detected in is unique. As a result, when the value of the sensing information exceeds the threshold value as in the value detected by the determination target vehicle 2A for the specific vehicle 2B, the driving state determination device 1 has a unique detection value for the sensing information in the determination target vehicle 2A. It is determined that it is not, and it is determined to reduce the degree of risk determination. Thereby, the driving state determination device 1 can perform the determination as to whether or not the determination target vehicle 2A is in a dangerous driving state with higher accuracy. In addition, since it is possible to determine whether or not a dangerous driving state has been obtained with higher accuracy, it is less likely that a dangerous driving state is erroneously determined, thereby reducing the amount of information recorded as a dangerous driving state. it can.

In the above-described step S112, the threshold is updated as a process for reducing the degree of risk determination. However, instead of changing the threshold value, the sensing information correction unit 14 may correct the value of the specific sensing information acquired from the determination target vehicle 2A, thereby reducing the degree of risk determination. For example, when it is determined that the degree of experience determination is reduced, the sensing information correction unit 14 may reduce the acceleration value if the specific sensing information is acceleration in the sensing information obtained from the determination target vehicle 2A. Or the sensing information correction | amendment part 14 may reduce the value, if specific sensing information is speed among the sensing information obtained from 2 A of determination object vehicles.
That is, in this case, the sensing information correction unit 14 is included in the vehicle detection information received from the determination target vehicle 2A based on the vehicle detection information received from the specific vehicle 2B and the vehicle detection information received from the determination target vehicle 2A. Correct the sensing information.

The threshold determination unit 12 may correct the threshold based on sensing information included in the vehicle detection information received from the specific vehicle 2B. For example, based on sensing information received from the specific vehicle 2B, a threshold that can be statistically determined as dangerous is calculated. For example, at a point where many vehicles 2 brake, the acceleration at the time of braking can be acquired from the specific vehicle 2B. Based on the acceleration of the specific vehicle 2B, the threshold value at that point may be determined.
That is, in this case, the driving state determination unit 15 uses the sensing information included in the vehicle detection information acquired from the determination target vehicle 2A and the threshold corrected based on the sensing information included in the vehicle detection information acquired from the specific vehicle 2B. Based on this, the driving state of the determination target vehicle 2A is determined.

  When the predetermined sensing information acquired from the determination target vehicle 2A cannot be used, the driving state determination unit 15 supplements the sensing information detected in the determination target vehicle 2A based on the vehicle detection information received from the specific vehicle 2B. The complementary sensing information may be specified. In this case, the driving state determination unit 15 may determine the driving state using the complementary sensing information. More specifically, it is assumed that the sensor is a camera and the sensing information is a captured image. When the captured image acquired from the determination target vehicle 2A cannot be used for some reason, the driving state determination unit 15 instructs the sensing information complementing unit 13 to start processing. The sensing information complementing unit 13 generates supplemental sensing information indicating, for example, the state of the road, using captured images acquired from the plurality of specific vehicles 2B. Then, the driving state determination unit 15 determines the driving state of the determination target vehicle 2A based on the complementary sensing information. Alternatively, the driving state determination unit 15 supplements the other sensing information of the determination target vehicle 2A using the other sensing information of the determination target vehicle 2A and the complementary sensing information, and determines whether the value exceeds the upper limit threshold value. You may make it determine.

  In the above-described processing, the driving state determination device 1 may perform the driving state determination processing in real time using the vehicle detection information acquired from the determination target vehicle 2A that is currently traveling, or the past determination target vehicle 2A. You may make it carry out using the vehicle detection information acquired from.

  In the process of step S107 described above, the driving state determination device 1 uses the ID of the other vehicle 2 recorded in association with the combination of the time included in the time indicated by the determination target time and the latitude and longitude included in the determination target position. I have identified. However, you may make it identify ID of the other vehicle 2 in which the combination of determination object time, a determination object position, and a weather condition corresponds. In this case, weather condition information is registered in association with the vehicle ID in the items of the data table shown in FIG. That is, the driving state determination device 1 specifies another vehicle 2 that is traveling under the same conditions based on the combination of the position where the determination target vehicle 2A is traveling, time, and weather conditions, and compares it with the specific vehicle 2B. Then, it may be determined whether the driving state of the determination target vehicle 2A is unique. Or the driving | running state determination apparatus 1 specifies the other vehicle 2 which has drive | worked in the past time slot | zone in the same position based on the position and time which the determination object vehicle 2A has traveled, and compares it with the other vehicle 2 Then, it may be determined whether the driving state of the determination target vehicle 2A is unique. For example, it may be determined whether the driving state of the determination target vehicle 2A is unique as compared with other vehicles 2 such as 10 minutes ago, 30 minutes ago, and 1 year ago.

FIG. 6 is a diagram showing the minimum configuration of the operating state determination device.
As shown in FIG. 6, the driving state determination device 1 may include at least the vehicle detection information receiving unit 11 and the driving state determination unit 15. The vehicle detection information receiving unit 11 receives vehicle detection information including at least sensing information and position information from the determination target vehicle 2A and a plurality of other vehicles 2 other than the determination target vehicle 2A. Further, the driving state determination unit 15 is based on the sensing information and the position information included in the vehicle detection information received from the other vehicle 2, and the vehicle detection information acquired from the determination target vehicle 2A that travels the position indicated by the position information. The driving state of the determination target vehicle 2A is determined.

  The above-described operating state determination device 1 has a computer system inside. Each process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing the program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Driving state determination apparatus, 2 ... Vehicle, 2A ... Determination object vehicle, 11 ... Vehicle detection information receiving part, 12 ... Threshold determination part, 13 ... Sensing information complement part, 14 ... Sensing information correction unit, 15 ... Driving state determination unit, 16 ... Database

Claims (8)

A vehicle detection information receiving unit that receives vehicle detection information including at least sensing information and position information from a determination target vehicle and a plurality of other vehicles other than the determination target vehicle;
The determination target based on the sensing information included in the vehicle detection information received from the other vehicle, the position information, and the vehicle detection information acquired from the determination target vehicle traveling at the position indicated by the position information. A driving state determination unit for determining a driving state of the vehicle;
A driving state determination device comprising: The driving state determination unit is based on the sensing information and the position information included in the vehicle detection information respectively received from the other vehicle that travels at the position indicated by the position information and the determination target vehicle at different times. The driving state determination device according to claim 1, wherein the driving state of the determination target vehicle is determined. The driving state determination unit is based on a threshold value obtained by correcting sensing information included in the vehicle detection information acquired from the determination target vehicle based on the sensing information included in the vehicle detection information received from the other vehicle. The driving state determination device according to claim 1 or 2, wherein the driving state of the determination target vehicle is determined.   The driving | running state determination apparatus of Claim 3 provided with the threshold value determination part which determines the said threshold value. A sensing information complementing unit for complementing the sensing information included in the vehicle detection information received from the determination target vehicle based on the sensing information and the position information included in the vehicle detection information received from the other vehicle; The driving | running state determination apparatus as described in any one of Claims 1-4 provided. Based on the sensing information and the position information included in the vehicle detection information received from the other vehicle, and the sensing information and the position information included in the vehicle detection information received from the determination target vehicle, A sensing information correction unit for correcting sensing information included in the vehicle detection information received from the determination target vehicle;
The driving | running state determination apparatus as described in any one of Claims 1-5 provided with these. Vehicle detection information including at least sensing information and position information is received from a determination target vehicle and a plurality of other vehicles other than the determination target vehicle;
The determination target based on the sensing information included in the vehicle detection information received from the other vehicle, the position information, and the vehicle detection information acquired from the determination target vehicle traveling at the position indicated by the position information. A driving state determination method for determining the driving state of a vehicle. The computer of the operating state determination device,
Vehicle detection information receiving means for receiving vehicle detection information including at least sensing information and position information from a determination target vehicle and a plurality of other vehicles other than the determination target vehicle;
The determination target based on the sensing information included in the vehicle detection information received from the other vehicle, the position information, and the vehicle detection information acquired from the determination target vehicle traveling at the position indicated by the position information. Driving state determining means for determining the driving state of the vehicle;
Program to function as.

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