JP2017033270A - Drive evaluation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive evaluation device that can appropriately evaluate a drive operation of a lane change.SOLUTION: A drive evaluation device is configured to: process video images taken by a main on-vehicle camera to recognize a location of each zone line of a driving lane marked on a road; detect a distance to each zone line from either end part of a vehicle to record the detected distance together with time; also record information expressing presence or absence of an operation of a direction indicator together with time; upon analyzing recorded data, after detecting a lane change start time based on the distance for each lane change event, search for data in a direction retroactive to the time from a portion where the lane changes to specify an operation start time of the direction indicator; calculate a time lag between two times as an evaluation object; further output a result having the evaluation object subjected to statistical processing as an evaluation result; and conduct a list display so as to enable comparison of the evaluation result with an evaluation reference value or comparison thereof with a tendency of a plurality of crew members or an individual difference.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a driving evaluation apparatus for evaluating a driving operation of a driver who drives a vehicle.

  Conventionally, in-vehicle devices such as digital tachographs mounted on vehicles for business use and devices for analyzing and evaluating operation record data recorded by the on-vehicle devices have an overspeed warning function (for example, patents). Reference 1). There is also a function to evaluate driving based on information such as the number of times of excess.

  Further, for example, in the vehicle safe driving degree recording device of Patent Document 2, it is shown that a safe driving action is determined based on information recording a driving situation, and the result is evaluated and recorded. Further, in FIG. 2 of Patent Document 2, “abrupt lane change” which is one of the “safe driving action items” indicates that “the time from the blinker operation to the steering operation is equal to or greater than a specified value”. .

  Moreover, in the driving advice notification system of Patent Document 3, it is shown that advice relating to driving of the host vehicle is performed by utilizing claim information corresponding to horning of horns by other vehicles.

JP2013-206420A JP 2002-225586 A JP 2013-114353 A

  However, it is not possible to appropriately evaluate whether or not the driver is performing safe driving only by evaluating excess speed as in Patent Document 1 or evaluating sudden acceleration / deceleration. For example, if you forcibly change the lane (lane change) even if another vehicle is approaching, or if you change the lane when the signal from the direction indicator is insufficient, the driver of the other vehicle will be inconvenienced. Although there is a danger of hanging or colliding, this situation cannot be reflected only by evaluating the speed and acceleration.

  For example, in the Road Traffic Law, it is stipulated that the direction indicator signal is issued 3 seconds before the course is changed and continues until the course change is completed. When another vehicle is driving in the lane (lane) to which the host vehicle is changed, the driver of the other vehicle can correctly predict the traveling direction of the host vehicle by visually checking the signal of the host vehicle, and is dangerous. It is possible to drive with care in advance so as not to cause a situation. However, if the own vehicle starts changing lanes immediately after giving a signal from the direction indicator, the drivers of other vehicles approach each other without seeing the signal, and other vehicles are forced to decelerate suddenly, There is a possibility of doing.

  Further, as in Patent Document 2, when detecting the time from the winker operation to the steering operation, this dangerous action cannot be detected when the driver changes the lane without performing the winker operation. In addition, it is inevitable that a time lag occurs between the steering operation and the actual start of lane change. In particular, when changing lanes on a curved road, the steering operation cannot be detected, and the start time of the steering operation may differ significantly from the actual lane change start time. .

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the driving | running evaluation apparatus which can evaluate the driving operation of a lane change appropriately.

In order to achieve the above-described object, the driving evaluation apparatus according to the present invention is characterized by the following (1) to (4).
(1) A driving evaluation device that evaluates a driving operation of a driver based on driving record data in which a predetermined event detected on a vehicle is recorded,
Based on the operation record data, a lane change start time in the vehicle and a direction indicator operation start time in the vicinity of the lane change start time are detected, respectively, and the direction indicator operation start time and the lane change start time are detected. An evaluation result output unit that outputs an evaluation result based on the time difference between
A driving evaluation apparatus comprising:

  According to this driving evaluation apparatus, the evaluation result output unit detects the lane change start time in the vehicle and the direction indicator operation start time in the vicinity of the lane change start time, and therefore correctly calculates the time difference between them. Therefore, appropriate evaluation can be performed based on this time difference. Further, for example, when a lane change is performed without the direction indicator operating, it can be recognized that the driving operation is abnormal.

(2) equipped with an on-vehicle device that is mounted on the vehicle and records the operation record data;
The vehicle-mounted device recognizes the position of the traveling lane boundary line marked on the road and the position of the own vehicle based on the video taken by the in-vehicle camera, and the traveling lane boundary line in the vehicle width direction and the own vehicle A lane change information generating unit that generates lane change information representing a positional relationship with the lane change information and records the lane change information as part of the operation record data.
The driving evaluation apparatus according to (1), characterized in that:

  According to this driving evaluation device, since the positional relationship between the traveling lane boundary line in the vehicle width direction and the host vehicle is grasped based on the video taken by the in-vehicle camera, the lane change start time can be correctly specified. Further, since the lane change information is recorded as a part of the operation record data, when the operation record data is read, the situation can be understood by going back in time. That is, after detecting the lane change, it is possible to detect the timing of the operation start of the direction indicator that is expected to occur at a timing earlier than that.

(3) The evaluation result output unit calculates the time difference for each of a plurality of driving operations related to lane change, aggregates the plurality of time differences, performs predetermined statistical processing, and evaluates the result of the statistical processing as an evaluation result Output as
The driving evaluation apparatus according to (1), characterized in that:

  According to this driving evaluation device, even if there is a large variation in the driving operation of each driver depending on the situation, the average value obtained by statistical processing, for example, Can understand the trend. Therefore, an evaluation result suitable for use for the purpose of teaching safe driving can be obtained.

(4) The evaluation result output unit displays the evaluation result in a state in which a difference between a predetermined evaluation reference value and the evaluation result can be distinguished.
The driving evaluation apparatus according to (3), characterized in that:

  According to this driving evaluation apparatus, the deviation between the evaluation result representing the individual tendency of the driver and the evaluation reference value can be easily grasped from the displayed contents.

  Moreover, the driving | running evaluation apparatus which concerns on this invention may become like following (5)-(9).

(5) The lane change information generation unit generates a distance in the vehicle width direction between the vehicle width direction end of the host vehicle and the travel lane boundary line as the lane change information.
The driving evaluation apparatus according to (2), characterized in that:

  According to this driving evaluation device, it becomes easy to specify the timing when the lane change is actually started based on the lane change information.

(6) The on-vehicle device monitors an operation state of the direction indicator on the vehicle or an operation on the direction indicator, detects at least a time when the direction indicator starts an operation, and determines the time A direction indicator operation start time recording unit for recording as part of the operation record data,
The driving evaluation apparatus according to (2) or (5), characterized in that:

  According to this driving evaluation apparatus, the lane change start time in the vehicle and the direction indicator operation start time in the vicinity of the lane change start time can be detected based on the operation record data.

(7) The evaluation result output unit individually processes the operation record data associated with each of a plurality of drivers, and displays the list in a state where the evaluation results of each of the plurality of drivers can be compared. ,
The driving evaluation apparatus according to (3) or (4), characterized in that:

  According to this driving evaluation apparatus, it is possible to easily grasp the tendency of each driver's driving operation, etc., by comparing a plurality of drivers. Therefore, for example, it is possible to easily identify a driver who needs guidance for safe driving among a large number of drivers.

(8) a first in-vehicle camera capable of photographing a scenery outside the passenger compartment including the road surface;
A second in-vehicle camera capable of photographing the driver in the passenger compartment;
With
The vehicle-mounted device records a video captured by the first vehicle-mounted camera and a video captured by the second vehicle-mounted camera, respectively, as a part of the operation record data.
The driving evaluation apparatus according to (2), characterized in that:

  According to this driving evaluation device, whether or not the driver has performed a safety confirmation operation before performing the driving operation for changing the lane by reading the operation record data and reproducing the video taken by the second in-vehicle camera. You can check whether or not.

(9) The evaluation result output unit is mounted on the vehicle-mounted device.
The driving evaluation apparatus according to (2), characterized in that:

  According to this driving evaluation device, when the driver makes a lane change before a sufficient time has elapsed since the driver started the operation of the direction indicator, the vehicle-mounted device immediately responds to the driver. It is possible to urge you to do safe warnings and encourage safe driving.

  According to the driving evaluation apparatus of the present invention, it is possible to appropriately evaluate the driving operation for changing lanes. That is, since the evaluation result output unit detects the lane change start time in the vehicle and the direction indicator operation start time in the vicinity of the lane change start time, it is possible to correctly calculate these time differences. An appropriate evaluation can be performed based on this time difference. Further, for example, when a lane change is performed without the direction indicator operating, it can be recognized that the driving operation is abnormal.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a block diagram illustrating a configuration example of a driving evaluation apparatus according to an embodiment of the present invention. FIG. 2 is a flowchart showing main operations of the driving evaluation apparatus in the embodiment of the present invention. FIG. 3 is a plan view illustrating an example of a state of a road on which the vehicle travels. FIG. 4 is a front view showing a display example of evaluation results.

  Specific embodiments relating to the present invention will be described below with reference to the drawings.

First, an outline of the driving evaluation apparatus will be described.
A configuration example of the driving evaluation apparatus in the embodiment of the present invention is shown in FIG. The driving | running evaluation apparatus shown in FIG. 1 is provided with the onboard equipment 10 and office PC40.

  The vehicle-mounted device 10 has a function of a digital tachograph, that is, an operation recorder, and is used in a state where it is mounted on a business vehicle to be managed such as a taxi, a truck, or a bus. The vehicle-mounted device 10 can automatically acquire various information indicating the operation state of the host vehicle, and record and save the data in the recording medium 25.

  The office PC 40 is a management device installed in a company office or the like that owns a large number of vehicles and manages these operation tasks, and incorporates dedicated software for management into a general personal computer (PC). It is configured as a device. That is, this office PC 40 acquires and analyzes information on the operation state recorded by the vehicle-mounted device 10 mounted on each of a large number of vehicles, thereby managing the operation of each vehicle and the labor of each crew member driving each vehicle. It can be used for management and safe driving management.

  Data transfer between each vehicle-mounted device 10 and the office PC 40 can be performed by moving a recording medium 25 that is detachable from the vehicle-mounted device 10, or when the vehicle-mounted device 10 has a wireless communication function. Data can also be transferred by wireless communication.

  As a characteristic matter in the present embodiment, the vehicle-mounted device 10 recognizes the positions of lane markings that are marked on the road surface of the road on which the host vehicle travels and that represents the boundaries of the travel lanes, The distance from each partition line is calculated and recorded on the recording medium 25. In addition to the distance, information indicating the date and time, the current position (latitude / longitude) of the host vehicle, and the operating state of the direction indicator (turn signal) is also recorded.

  Further, information recorded on the recording medium 25 by each vehicle-mounted device 10 is accumulated on the rear analysis database 26 accessible by the office PC 40. The office PC 40 reads and analyzes the information recorded by each vehicle from the rear analysis database 26, and acquires necessary information. Specifically, the lane behavior determination function identifies the time when the vehicle has changed lanes, and identifies whether the lane has been changed to the left or right.

  Further, the office PC 40 searches for information in the past, that is, in a direction going back in time from the time (t00) at which the start of the lane change is detected, and specifies the time (t01) at which the direction indicator starts to operate. To do. Then, the time difference (t00−t01) between the two times is calculated. That is, at the time of the lane change event, the time difference (t00−t01) from the time when the signal from the direction indicator is started to the time when the lane change is actually started is specified. Further, the time difference is totaled for a number of lane change events recorded as data on the rear analysis database 26, and statistical processing is performed.

  When summing up the time differences, a result of summarizing the lane change in the left direction and a lane change in the right direction, respectively, and a result of summarizing without distinguishing the left and right are recorded. As a specific example of statistical processing, histogram creation, mode value, standard deviation, maximum value, minimum value, etc. are calculated.

  Then, the office PC 40 displays the result of statistical processing on the screen. When this display is performed, a difference between a predetermined evaluation reference value and an actual time difference is output in a state where it can be easily recognized visually. Further, since the office PC 40 can access the recorded data of a large number of crew members, the statistical processing is performed for each crew member, the results are displayed in a list, and the results are output in a state in which differences in behavior among a plurality of crew members can be compared. .

  Note that a part of the functions performed by the office PC 40 can be mounted on the vehicle-mounted device 10. In that case, based on the information recorded in the recording medium 25 on the vehicle-mounted device 10, the lane change start time (t 00) is detected by performing analysis in almost real time, and the time ( t01) is specified, and the time difference (t00-t01) between the two times can be calculated. Furthermore, the calculated time difference can be compared with a predetermined threshold value, and a warning can be given to the crew when the vehicle is not in safe driving.

Next, a configuration example of the vehicle-mounted device 10 will be described.
1 includes a video decoder 11, an image processing CPU 12, a read-only memory 13, a temporary storage memory 14, an NTSC signal processing unit 15, a monitor output unit 16, a control system processing CPU 17, and a read-only memory 18. , Temporary storage memory 19, vehicle signal interface 20, GPS position information acquisition unit 21, CAN interface 22, audio output unit 23, vibrator output unit 24, recording medium 25, PC setting unit 27, handy terminal connection unit 28, and nonvolatile memory A memory 29 (EEPROM) is provided.

  A main in-vehicle camera 31 and an optional in-vehicle camera 32 are connected to the two video input terminals of the video decoder (Decoder) 11, respectively. The main in-vehicle camera 31 is installed in the passenger compartment so as to be able to capture a landscape in front of the traveling direction of the host vehicle including the road surface, and outputs the captured image as an NTSC (National Television System Committee) standard video signal. . The optional in-vehicle camera 32 is installed in the passenger compartment so that a crew member driving the host vehicle can be photographed as a subject, and outputs the photographed video as an NTSC video signal.

  The video decoder 11 takes in video signals output from the main vehicle-mounted camera 31 and the optional vehicle-mounted camera 32, and generates digital image data that can be processed by a computer or the like for each frame. Digital image data corresponding to the video captured by the main vehicle-mounted camera 31 and digital image data corresponding to the video captured by the optional vehicle-mounted camera 32 are respectively input to the image processing CPU 12 and the control system processing CPU 17.

  The image processing CPU 12 is a microcomputer, and can execute predetermined image processing at high speed by executing a program incorporated in advance. Specifically, from the digital image data corresponding to the video of the main vehicle-mounted camera 31, the contour shape of the own vehicle and the position of each part are recognized, or each of the travel lane boundaries marked on the road surface included in the landscape A partition line (white line) can be recognized. The image processing CPU 12 can give the result of the image processing to the control system processing CPU 17.

  A read-only memory (ROM) 13 is a memory from which data can be read by accessing the image processing CPU 12, and stores various programs and various constants necessary for the operation of the image processing CPU 12 in advance. ing.

  The temporary storage memory (SDRAM) 14 is a memory in which data can be written and read by accessing the image processing CPU 12, and is used to temporarily store various data as necessary.

  The NTSC signal processing unit 15 generates an NTSC standard video signal based on an image such as a recognition result in the image processing CPU 12. This video signal is output to the monitor output unit 16. By connecting a predetermined monitor device (display) to the monitor output unit 16, the recognition result in the image processing CPU 12 can be monitored.

  The control system processing CPU 17 is a microcomputer, and can execute control for realizing various functions required for the vehicle-mounted device 10 by executing various programs incorporated in advance. Since the vehicle-mounted device 10 is a digital tachograph, the main operation of the control system processing CPU 17 is to automatically acquire various information related to the operation of the host vehicle and record it in the recording medium 25.

Information recorded on the recording medium 25 by the control system processing CPU 17 includes data D1 to D9 as shown below.
D1: Distance in the vehicle width direction from the left and right ends of the host vehicle to each lane marking at the boundary of the driving lane D2: Current time (date and time)
D3: Current position of the vehicle (latitude / longitude)
D4: Presence / absence of operation of left and right direction indicators D5: Ignition (IGN) on / off state D6: Brake operation on / off D7: Vehicle speed [km / h]
D8: Image data of crew members who are driving D9: Data representing the occurrence of various events such as alarms

  A read-only memory (ROM) 18 is a memory from which data can be read by accessing the control system processing CPU 17, and holds various programs and various constants necessary for the operation of the control system processing CPU 17 in advance. ing.

  The temporary storage memory (SDRAM) 19 is a memory in which data can be written and read by access of the control system processing CPU 17, and is used for temporarily storing various data as required.

  The non-volatile memory (EEPROM) 29 is a memory in which data can be written and read by accessing the control system processing CPU 17, and holds various parameters, various threshold values, tables, etc. for determining the operation mode of the vehicle-mounted device 10. be able to. The data held in the nonvolatile memory 29 can be rewritten as necessary.

The vehicle signal interface (I / F) 20 performs signal processing necessary for exchanging signals between the vehicle-mounted device 10 and various other electrical components on the vehicle. For example, the following signal input / output is performed via the vehicle signal interface 20.
SG1: Trigger signal (output)
SG2: Signal (input) indicating on / off of ignition (IGN)
SG3: Signal indicating the state of the manual switch that can be operated by the crew (input)
SG4: Signal indicating on / off of brake operation (input)
SG5: Signal indicating on / off of the left direction indicator (input)
SG6: Signal indicating on / off of the right direction indicator (input)

  The GPS position information acquisition unit 21 can acquire the latitude and longitude of the current position of the host vehicle by calculation using a receiver that receives radio waves from a GPS (Global Positioning System) satellite. The GPS receiver may be built in the vehicle-mounted device 10 or connected to the outside of the vehicle-mounted device 10.

  The CAN interface 22 includes a transceiver for performing data communication of CAN (Controller Area Network) standard on the vehicle. The CAN interface 22 is connected to other devices such as a meter unit of an instrument panel and various electronic control units (ECUs) via a communication network on the vehicle. Therefore, the vehicle-mounted device 10 can acquire various information from other devices, for example, vehicle speed information, engine rotation speed information, and the like.

  The voice output unit 23 can generate a synthesized voice signal for outputting, for example, a warning or guidance message from a predetermined speaker as a pseudo voice heard by the driver. That is, the voice output unit 23 outputs a necessary voice message in accordance with an instruction from the control system processing CPU 17.

  The vibrator output unit 24 can drive a predetermined vibrator in accordance with an instruction from the control system processing CPU 17. The vibration generated by driving the vibrator can make the driver perceive a certain situation.

  The recording medium 25 is configured, for example, as a card-like device with a built-in nonvolatile memory. The recording medium 25 is detachably attached to a predetermined card slot provided in the vehicle-mounted device 10. In the storage area in the recording medium 25, information such as a crew ID representing a specific crew member (driver) using the storage medium 25 is registered in advance.

  The control system processing CPU 17 can access the recording medium 25 attached to the vehicle-mounted device 10 and write and read data to and from the recording medium 25. Actually, the operation information including the data D1 to D9 is sequentially written in the memory on the recording medium 25 under the control of the control system processing CPU 17. Note that special access control is performed so that the operation information written in the recording medium 25 is not falsified or deleted due to unauthorized access.

  For example, when the operation of the vehicle is completed, the crew member removes the recording medium 25 from the vehicle-mounted device 10 and takes it back to the office, and transfers various operation information recorded on the recording medium 25 to the server on the office PC 40. And can be registered in the backward analysis database 26. In addition, when the onboard equipment 10 is equipped with the wireless communication function, the operation information on the recording medium 25 may be automatically transferred to the server while the recording medium 25 is attached to the onboard equipment 10. Is possible.

  The PC setting unit 27 includes a terminal for connecting a personal computer (PC) to the vehicle-mounted device 10. By connecting a predetermined personal computer to the PC setting unit 27, for example, the state of the vehicle-mounted device 10 can be displayed on the screen of the personal computer.

  The handy terminal connection unit 28 includes a connection terminal for connecting a predetermined handy terminal (H / T). Although not shown, this handy terminal includes a plurality of buttons and a display that can be operated by a user (administrator). For example, when a predetermined administrator performs maintenance on the vehicle-mounted device 10, various parameters stored in the nonvolatile memory 29 can be read or updated by connecting a handy terminal to the vehicle-mounted device 10.

Next, recognition of lane change will be described. A specific example of a state in which the road on which the vehicle travels is viewed from above is shown in FIG.
In the state shown in FIG. 3, two traveling lanes L <b> 1 and L <b> 2 exist on the road 50 on which the host vehicle 54 is traveling, with the lane marking 52 as a boundary. Therefore, the host vehicle 54 can travel on the traveling lane L1 as shown in FIG. 3, or can travel on the adjacent traveling lane L2. Therefore, the host vehicle 54 may change the lane from the travel lane L1 to the travel lane L2, and conversely, the lane may be changed from the travel lane L2 to the travel lane L1.

  By the way, it is not always certain what kind of situation is regarded as the start of lane change. However, when viewed from the driver of another vehicle, if the host vehicle 54 protrudes from the travel lane L1, it can be regarded as a dangerous state that is different from normal.

  Therefore, for example, the lane change of the own vehicle 54 shown in FIG. 3 indicates that the distance A1 in the vehicle width direction, that is, the state in which the distance between the right end of the own vehicle 54 and the lane marking 52 has approached zero is “start lane change”. Can be determined.

  On the other hand, in the vehicle-mounted device 10 shown in FIG. 1, as described above, the image processing CPU 12 is based on the image, and the positions of the left and right ends of the host vehicle 54 and the positions of the lane markings 51, 52, and 53. Recognize each. Further, the control system processing CPU 17 uses the recognition result of the image processing CPU 12, the distance A1 in the vehicle width direction between the right end of the host vehicle 54 and the lane marking 52, and the left end of the host vehicle 54 and the lane marking 51. And a distance A2 in the vehicle width direction are detected. These distances A1 and A2 are recorded on the recording medium 25 together with the time (D2) as the operation information of the data D1.

  Therefore, in the office PC 40 that analyzes such operation information, for example, a state in which the distance between the right end of the own vehicle 54 and the lane marking 52 is close to 0, for example, “lane” from the situation in which the recorded distance A1 changes. "Start of change" can be recognized, and the time (t00) at that time can also be acquired from the data D2.

  On the other hand, when changing lanes, it is necessary to give a signal by a direction indicator prior to that. In the vehicle-mounted device 10 shown in FIG. 1, the presence / absence of each operation of the left and right direction indicators is recorded on the recording medium 25 as data D4 that is a part of the operation information. Therefore, when the office PC 40 analyzes the operation information on the rear analysis database 26, the timing at which the operation of the direction indicator starts can be specified based on the data D4, and the time (t01) can also be specified by the data D2.

  The office PC 40 can also calculate the time difference (t00−t01) between the two times. The length of this time difference is related to whether there is a margin of time necessary for the driver of the other vehicle to predict the course change accompanying the lane change of the own vehicle 54 and reflect it in the driving operation of the other vehicle. It is very important for proper driving. For example, as stipulated in the Road Traffic Law, a dangerous situation can be prevented from occurring by starting the direction indicator 3 seconds before the lane change start time (t00). It is highly possible.

  The main operation of the driving evaluation apparatus shown in FIG. 1 is shown in FIG. In the process shown in FIG. 2, steps S11 and S12 show the operation in the vehicle-mounted device 10, and the other steps S21 to S27 show the operation of the office PC 40. The operation shown in FIG. 2 will be described below.

  In the vehicle-mounted device 10, the image processing CPU 12 performs image processing on digital image data corresponding to a landscape image captured by the main vehicle-mounted camera 31, so that a white line on the road, that is, each partition line 51 shown in FIG. 52 and 53 are recognized (S11).

  In addition, the above-mentioned data D1 to D9, that is, the distance in the vehicle width direction from the left and right ends of the own vehicle to the respective lane markings on the lane boundary, the current time (date and time), the current position (latitude / longitude) of the own vehicle, The presence or absence of each operation of the direction indicator is automatically acquired by the control system processing CPU 17 and recorded on the recording medium 25 (S12).

  The operation information recorded on the recording medium 25 is a rear analysis database managed by the server of the office PC 40 by physical movement of the recording medium 25 or by wireless communication after the operation operation of the vehicle on that day is completed. 26.

  On the other hand, when a predetermined administrator evaluates the operation information on the office PC 40, the office PC 40 accesses the rear analysis database 26, and the operation information for each crew that is sequentially recorded as time series data. Is read from the position of the operation start time (S21).

  In step S22, the office PC 40 identifies whether or not the lane change is started by referring to the data D1 included in the read operation information. Also, a distinction is made between a lane change to the right side and a lane change to the left side.

  For example, when the host vehicle 54 moves from the travel lane L1 to the travel lane L2 shown in FIG. 3 (changes the lane), the data of the location where the value of the data D1 representing the distance A1 in the vehicle width direction approaches zero. The office PC 40 recognizes the position as the location where the lane change is started in S22.

  If the part which started the lane change is detected, it will progress from S22 to S23. In S23, the lane change start time (t00) is first acquired by referring to the data D2 included in the operation information of the location where the lane change is started. Furthermore, the time series data of the operation information for a predetermined time before and after the position of the lane change start time (for example, 5 seconds) is searched in order, the location where the operation of the direction indicator starts is specified based on the contents of the data D4, The direction indicator operation start time (t01) is obtained in S23 by referring to the data D2 at that location.

  In a normal driving operation, the lane change is started after the operation of the direction indicator is started. Therefore, when searching for the location where the operation of the direction indicator has started in S23, the time-series data is usually referred to in the order of going back in time from the location where the lane change is started. However, since there is a possibility that the crew may perform an abnormal driving operation, the search is performed both before and after the location where the lane change is started. In addition, there is a possibility of changing lanes without giving a signal from the direction indicator, but in that case, the search for the location where the operation of the direction indicator started fails and it is detected that the driving is abnormal. it can.

  In the next step S24, the time difference (t00-t01) from the direction indicator operation start time (t01) detected by the office PC 40 in S23 to the lane change start time (t00) is calculated, and this time difference is calculated as one evaluation object. Record as a value.

  If reading of all time-series data or all time-series data within the range designated by the administrator has not been completed, the process returns from S25 to S22 and the above processing is repeated. Therefore, the time difference (t00−t01) is recorded as the evaluation target value in S24 for each of all the lane change events recorded as the operation information.

  When reading of all time-series data or all time-series data within the range designated by the administrator is completed, the process proceeds to S26, and the office PC 40 performs predetermined statistical processing. Specifically, the evaluation target value (time difference) of all lane change events for the lane change in the right direction and the lane change in the left direction separately, and for those obtained by integrating both. To calculate the statistical value. For example, a histogram representing the distribution status of occurrence frequency for each length of time is created, and an average value, mode value, standard deviation, maximum value, minimum value, etc. are obtained.

  After the processing up to step S26 is completed, the office PC 40 creates a daily report 35 including information reflecting the result of the statistical processing of S26 as an evaluation result, and prints the daily report 35 on paper. Further, the driving evaluation screen is displayed on the display of the office PC 40 (S27).

  A display example of the evaluation result is shown in FIG. The display content shown in FIG. 4 represents a specific example of the driving evaluation screen displayed on the display of the office PC 40 in step S27 shown in FIG.

  The driving evaluation screen of FIG. 4 is obtained by outputting the evaluation results regarding the driving operation of each lane change of five crew members (driver A, driver B, driver C, driver D, driver E) as a histogram. Are displayed in a list so that the evaluation results of the crew members can be compared. This histogram represents a difference in frequency due to a difference in display density or coloring. Further, as evaluation reference values, vertical lines representing the positions of the values “1 second ago”, “2 seconds ago”, and “3 seconds ago” are displayed on the histogram as reference lines.

  In FIG. 4, time t0 corresponds to the time (t00) at which the lane change was actually started. Times t1, t2, and t3 represent reference times of “1 second ago”, “2 seconds ago”, and “3 seconds ago”, respectively, as relative times based on the position of time t0.

  For example, referring to the histogram of “Driver A” in the screen shown in FIG. 4, the most frequently evaluated value (t00-t01) is about 2.7 seconds, so “3” defined by the Road Traffic Law. It is equivalent to “second”, and it can be considered that the vehicle is almost safely operated. Further, referring to the histogram of “Driver E”, since the most frequently evaluated value is about 0.2 seconds, the lane change is started almost simultaneously with the start of the direction indicator signal. Therefore, it can be regarded as driving very dangerously.

  By displaying a list of evaluation results of a plurality of crew members side by side as shown in the screen of FIG. 4, the manager can easily grasp the tendency of the evaluation results of the entire crew members. Further, by displaying the position of the evaluation reference value, it is possible to easily grasp the difference from this evaluation reference value. Therefore, it is possible to easily identify a person who needs driving guidance, such as the crew of “Driver E” in FIG.

  On the other hand, the vehicle-mounted device 10 shown in FIG. 1 automatically records image data corresponding to the driver's video imaged by the optional vehicle-mounted camera 32 on the recording medium 25 as data D8. Therefore, when the manager evaluates the driving situation of each crew member, it is possible to reproduce the image data and grasp the driving situation of the driver. For example, you can easily search and display images showing the driver's behavior when changing lanes from the time, so you can check whether the left and right safety checks are being performed when changing lanes. It can also be reflected.

  In addition, about the conditions considered to be a lane change start, not only when the distance A1 or A2 of a vehicle width direction approaches 0, but conditions can be corrected as needed. In any case, by detecting the lane change based on the distances A1 and A2 in the vehicle width direction, highly accurate detection is possible regardless of the road conditions.

Here, the features of the embodiment of the driving evaluation apparatus according to the present invention described above are briefly summarized and listed in the following [1] to [9], respectively.
[1] A driving evaluation device (the vehicle-mounted device 10 and / or the office PC 40) that evaluates a driving operation of a driver based on driving record data that records a predetermined event detected on a vehicle,
Based on the operation record data, a lane change start time (t00) in the vehicle and a direction indicator operation start time (t01) in the vicinity of the lane change start time are detected, respectively, and the direction indicator operation start time And an evaluation result output unit that outputs an evaluation result based on a time difference (t00-t01) between the lane change start time and the lane change start time,
A driving evaluation apparatus comprising:
[2] The driving evaluation apparatus according to [1] above,
An on-vehicle device (10) mounted on the vehicle for recording the operation record data;
The vehicle-mounted device recognizes the position of the travel lane boundary line (partition lines 51 to 53) marked on the road and the position of the host vehicle based on the video taken by the vehicle-mounted camera (main vehicle-mounted camera 31). Lane change information (distances A1 and A2 in the vehicle width direction) representing the positional relationship between the travel lane boundary line in the vehicle width direction and the host vehicle is generated, and the lane change information is used as part of the operation record data (D1). A lane change information generation unit (control system processing CPU 17) that records as
The driving | running evaluation apparatus characterized by the above-mentioned.
[3] The driving evaluation apparatus according to [1] above,
The evaluation result output unit calculates the time difference for each of a plurality of driving operations related to a lane change, aggregates the plurality of time differences, performs predetermined statistical processing, and evaluates the result of the statistical processing as an evaluation result (daily report 35). And output as a display screen 36).
The driving | running evaluation apparatus characterized by the above-mentioned.
[4] The driving evaluation apparatus according to [3] above,
The evaluation result output unit displays the evaluation result in a state where the difference between the evaluation reference value determined in advance and the evaluation result can be distinguished.
The driving | running evaluation apparatus characterized by the above-mentioned.
[5] The driving evaluation apparatus according to [2] above,
The lane change information generation unit generates distances (A1, A2) in the vehicle width direction between the vehicle width direction end of the host vehicle and the travel lane boundary line as the lane change information.
The driving | running evaluation apparatus characterized by the above-mentioned.
[6] The driving evaluation apparatus according to [2] or [5] above,
The vehicle-mounted device monitors an operation state of the direction indicator on the vehicle or an operation on the direction indicator, detects at least a time (t01) when the direction indicator starts operation, and determines the time A direction indicator operation start time recording unit (control system processing CPU 17) for recording as a part (D2) of the operation record data,
The driving | running evaluation apparatus characterized by the above-mentioned.
[7] The driving evaluation apparatus according to [3] or [4] above,
The evaluation result output unit individually processes the operation record data associated with each of a plurality of drivers, and displays the list in a state where the evaluation results of each of the plurality of drivers can be compared.
The driving | running evaluation apparatus characterized by the above-mentioned.
[8] The driving evaluation apparatus according to [2] above,
A first in-vehicle camera (main in-vehicle camera 31) capable of photographing the scenery outside the passenger compartment including the road surface;
A second in-vehicle camera (optional in-vehicle camera 32) capable of photographing a driver in the vehicle interior;
With
The vehicle-mounted device (10) records a video captured by the first vehicle-mounted camera and a video captured by the second vehicle-mounted camera, respectively, as a part of the operation record data.
The driving | running evaluation apparatus characterized by the above-mentioned.
[9] The driving evaluation apparatus according to [2] above,
The evaluation result output unit is mounted on the in-vehicle device,
The driving | running evaluation apparatus characterized by the above-mentioned.

10 On-vehicle equipment 11 Video decoder 12 Image processing CPU
13, 18 Read-only memory (ROM)
14, 19 Temporary memory (SDRAM)
15 NTSC signal processor 16 Monitor output unit 17 Control system processing CPU
DESCRIPTION OF SYMBOLS 20 Vehicle signal interface 21 GPS position information acquisition part 22 CAN interface 23 Audio | voice output part 24 Vibrator output part 25 Recording medium 26 Back analysis database 27 PC setting part 28 Handy terminal connection part 29 Non-volatile memory (EEPROM)
31 Main in-vehicle camera 32 Optional in-vehicle camera 35 Daily report 36 Display screen 40 Office PC
50 Roads 51, 52, 53 Dividing line 54 Own vehicle A1, A2 Distance in the vehicle width direction L1, L2 Travel lane

Claims (4)

A driving evaluation device that evaluates a driving operation of a driver based on driving record data that records a predetermined event detected on a vehicle,
Based on the operation record data, a lane change start time in the vehicle and a direction indicator operation start time in the vicinity of the lane change start time are detected, respectively, and the direction indicator operation start time and the lane change start time are detected. An evaluation result output unit that outputs an evaluation result based on the time difference between
A driving evaluation apparatus comprising: An on-vehicle device that is mounted on the vehicle and records the operation record data;
The vehicle-mounted device recognizes the position of the traveling lane boundary line marked on the road and the position of the own vehicle based on the video taken by the in-vehicle camera, and the traveling lane boundary line in the vehicle width direction and the own vehicle A lane change information generating unit that generates lane change information representing a positional relationship with the lane change information and records the lane change information as part of the operation record data.
The driving | running evaluation apparatus of Claim 1 characterized by the above-mentioned. The evaluation result output unit calculates the time difference for each of a plurality of driving operations related to lane change, aggregates the plurality of time differences, performs predetermined statistical processing, and outputs the result of the statistical processing as an evaluation result ,
The driving | running evaluation apparatus of Claim 1 characterized by the above-mentioned. The evaluation result output unit displays the evaluation result in a state where the difference between the evaluation reference value determined in advance and the evaluation result can be distinguished.
The driving | running evaluation apparatus of Claim 3 characterized by the above-mentioned.