JP2011003013A - Driving evaluation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving evaluation device for precisely evaluating the driving act of a driver at a temporary stop place.SOLUTION: When an evaluation block is set in a temporary stop place where it is determined that an own vehicle travels, a driving evaluation device 1 evaluates the operating act of the driver of an own vehicle within an evaluation section when a stop time within the evaluation block is less than a first time t1, and a passing time within the evaluation block is less than a second time t2. Thus, stop or slow moving resulted from disturbance (preceding vehicle, passing vehicle, bicycle, pedestrian or the like) in an easily visible place is excluded, and the driving act of the driver on the basis of temporary stop after consciously confirming safety of the driver to a hardly visible place.

Description

  The present invention relates to a driving evaluation apparatus that evaluates a driving behavior of a driver at a temporary stop point.

  When the host vehicle travels through the temporary stop point, the driver of the host vehicle is temporarily stopped based on the frequency of temporary stop taking into account the transit time when the vehicle passes through the temporary stop point, the traffic congestion status, and the location. There is known a pause alarm device that issues a warning for fulfillment (see, for example, Patent Document 1).

JP 2007-17411 A

  In the temporary stop alarm device as described above, it is possible to determine that the temporary stop has been implemented only for the temporary stop after the driver consciously confirms the safety in a place that is difficult to visually recognize. is important. In other words, in a stop caused by a disturbance in a place where it is easy to visually recognize (preceding vehicle, passing vehicle, bicycle, pedestrian, etc .; hereinafter simply referred to as “disturbance”), the driver is consciously safe from places that are difficult to see. Since there is a possibility that confirmation has not been performed, it is not preferable to determine that such a stop has been implemented as a temporary stop.

  This invention is made | formed in view of such a situation, and it aims at providing the driving | running evaluation apparatus which can evaluate a driver | operator's driving action in a temporary stop location with sufficient precision.

  In order to achieve the above object, a driving evaluation apparatus according to the present invention is a driving evaluation apparatus that evaluates driving by a driver, and is evaluated as a temporary stop position when it is determined that the host vehicle travels through a temporary stop position. Whether or not the evaluation section including the divided section is to be evaluated according to the traveling state in the divided section, comprising: a traveling scene determining means for setting the section; and a dividing means for dividing the evaluation section into a plurality of divided sections. It is characterized by determining.

  In this driving evaluation apparatus, an evaluation section is set at a temporary stop point where it is determined that the host vehicle travels, the evaluation section is divided into a plurality of divided sections, and the divided sections are determined according to the driving state in the divided sections. It is determined whether or not to include the evaluation section to be evaluated. As a result, stopping and slowing down due to disturbance are excluded, and the driving behavior of the driver is evaluated based on the temporary stop after the driver consciously confirms safety in a place that is difficult to see. Will be. Therefore, according to this driving evaluation device, it is possible to accurately evaluate the driving behavior of the driver at the temporary stop point. As an example of the traveling state, parameters corresponding to the passing time such as the passing speed and the stop time can be used in addition to the passing time. For example, when the passage time is equal to or longer than a predetermined time, when the passage speed is equal to or lower than the predetermined speed, when the stop time is equal to or longer than the predetermined time, it is excluded from the evaluation target.

  Moreover, it is preferable that a driving | running | working scene determination means sets an evaluation area based on the curvature of the driving | running | working locus | trajectory of the own vehicle. According to this configuration, the driving behavior of the driver at the temporary stop point can be evaluated with higher accuracy. The curvature of the travel locus can be determined based on vehicle state quantities such as a steering angle, an acceleration in the vehicle width direction (so-called lateral acceleration), a yaw rate, a slip angle, and the like. Further, the curvature of the travel locus can be determined based on information other than the vehicle state quantity, such as a navigation system and GPS information, imaging data outside the vehicle, and the like.

  ADVANTAGE OF THE INVENTION According to this invention, the driver | operator's driving action in the temporary stop location can be evaluated accurately.

It is a block diagram which shows the structure of one Embodiment of the driving | running evaluation apparatus which concerns on this invention. It is a figure for demonstrating the setting procedure of the evaluation area by the driving scene determination part of FIG. It is a figure for demonstrating the setting procedure of the evaluation area by the driving scene determination part of FIG. It is a flowchart which shows the process performed by driving | operation evaluation ECU of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a block diagram showing a configuration of an embodiment of a driving evaluation apparatus according to the present invention. As shown in FIG. 1, a driving evaluation device 1 includes a navigation system 2, a steering angle sensor 3, a vehicle speed sensor 4, an acceleration sensor 5, a driving evaluation ECU (Electronic Control Unit) 6, a drive recorder (memory). Means) 7. Whether the driver evaluation ECU 6 has consciously confirmed the safety of the driver of the host vehicle (that is, the vehicle on which the driving evaluation device 1 is mounted) for a place that is difficult to see in the evaluation section set as the temporary stop point. The driver's driving behavior is evaluated step by step regarding whether or not.

  The navigation system 2 has a GPS receiving unit that detects the position of the host vehicle by receiving radio waves from a plurality of GPS satellites, and map data that stores road structures, facility positions, and the like. The navigation system 2 transmits to the driving evaluation ECU 6 information related to a temporary stop point on the road on which the host vehicle travels based on the position of the host vehicle and map data.

  The steering angle sensor 3 detects the steering angle of the steering of the host vehicle and transmits information related to the steering angle to the driving evaluation ECU 6. The vehicle speed sensor 4 detects the vehicle speed of the host vehicle and transmits information related to the vehicle speed to the driving evaluation ECU 6, and the acceleration sensor 5 detects acceleration in the front-rear direction and the left-right direction of the host vehicle and drives information related to the acceleration. It transmits to evaluation ECU6. The drive recorder 7 stores various information such as information on the driving situation of the host vehicle and the driving behavior of the driver, starting with the evaluation result by the driving evaluation ECU 6.

  The driving evaluation ECU 6 is an electronic control unit including a CPU, a ROM, a RAM, and the like, and comprehensively controls the driving evaluation apparatus 1. The driving evaluation ECU 6 loads an application program stored in the ROM onto the RAM and executes it by the CPU, whereby a driving scene determination unit (driving scene determination unit) 8 and a stop time determination unit (stop time determination unit) 9 are obtained. The transit time determination unit (passage time determination unit) 11 and the driving behavior evaluation unit (driving behavior evaluation unit) 12 are configured by software.

The travel scene determination unit 8 includes information acquired from the navigation system 2 (including information on a temporary stop point on the road on which the host vehicle travels),
Using the information about the steering angle acquired from the steering angle sensor 3, the information about the vehicle speed acquired from the vehicle speed sensor 4, the information about the acceleration acquired from the acceleration sensor 5, etc., turn right or left at the intersection, lane change, acceleration or deceleration The traveling scene of the vehicle such as cornering is determined. When the traveling scene is a right turn or a left turn at an intersection, the traveling scene determination unit 8 determines whether or not the host vehicle travels through the temporary stop point based on information on the temporary stop point on the road on which the host vehicle travels. judge. And when it determines with the own vehicle driving | running | working a temporary stop location, the driving scene determination part 8 sets an evaluation area in the temporary stop location where the own vehicle drive | works based on the information regarding a steering angle.

  2 and 3 are diagrams for explaining the procedure for setting the evaluation section by the traveling scene determination unit in FIG. As shown in FIG. 2, the traveling scene determination unit 8 determines that the steering angle of the host vehicle V is δ (for example, 200 deg) at the temporary stop point S at the intersection where the road R1 on which the host vehicle V travels intersects the priority road R2. When it becomes above, it judges with the right turn or the left turn scene. Then, the traveling scene determination unit 8 sets P (s) as the point closest to the point where the steering angle associated with the right or left turn is maximized and the steering angle becomes δ or more at the start of turning of the steering wheel, P (s) and P (e) are defined as P (e), where P (e) is the point closest to the point at which the steering angle associated with the right or left turn is maximized and the steering angle is less than or equal to δ when the steering is turned back. Let P (c) be the central point.

  Thus, the central point P (c) between P (s) and P (e) is obtained because the steering angle is maximum even if the same driver takes the same right or left turn action at the time of right turn or left turn. This is because the points will vary. Even if the driver is the same, the steering method may be different between a right turn and a left turn, so the value of δ may be different between a right turn and a left turn.

  Subsequently, as shown in FIG. 3, the traveling scene determination unit 8 selects points at predetermined distances (for example, 1 m) from the point P (c) toward the front, respectively P (1), P (2) · .. P (n) (for example, n = 9). Then, the traveling scene determination unit 8 sets a section between P (3) and P (n-1) as an evaluation section A, and a section between P (c) and P (1), P ( A section between 1) and P (2)... P (n-1) and a section between P (n) are divided into sections D (1), D (2). ) And set. The section between P (3) and P (n-1) is set as the evaluation section A because the driver has consciously confirmed safety for a place that is difficult to see at the temporary stop. This is because the area in front of the temporary stop position is appropriate as the target area for driving evaluation from the viewpoint of driving evaluation.

  The stop time determination unit 9 determines whether or not the stop time that the host vehicle V is assumed to have stopped in the evaluation section A set by the traveling scene determination unit 8 is equal to or longer than the first time t1. Here, the stop time determination unit 9 determines whether or not the passing time during which the host vehicle V passes through each of the divided sections D (3) to D (n) is equal to or longer than the time t1 second. It is determined whether or not the stop time in A is longer than time t1. As an example, the stop time determination unit 9 determines whether or not the passing time for the host vehicle V to pass through each 1m divided section D (3) to D (9) is 5 seconds or more, thereby determining the stop time. It is determined whether or not is longer than 5 seconds. The reason is as follows.

  As will be described later, when the stop time is less than 5 seconds, the driving evaluation ECU 6 determines whether or not the driver of the host vehicle V has consciously confirmed safety for a place that is difficult to visually recognize. Evaluate driving behavior. When the driver consciously checks the safety at the temporary stop position, the average time is about 2 seconds. However, it is recommended to check the safety enough to shake the head right, left and right. The recommended time is about 3 seconds. However, it is actually necessary to take a margin for the recommended time. Therefore, the driving evaluation ECU 6 does not evaluate the driving behavior of the driver as being stopped due to a disturbance when the stop time is 5 seconds or more, and when the stop time is less than 5 seconds, The driver's driving behavior is evaluated. The reason why the divided sections D (3) to D (9) are to be determined is to exclude the case where the host vehicle V is stopped due to the preceding vehicle stopped near the temporary stop position. It is.

  The passage time determination unit 11 determines whether or not the passage time for the host vehicle V to pass through the evaluation section A set by the traveling scene determination unit 8 is equal to or longer than the second time t2. As an example, the passage time determination unit 11 determines whether or not the passage time for the host vehicle V to pass through a 5 m section between P (3) and P (8) is 10 seconds or more. The reason is as follows.

  As will be described later, the driving evaluation ECU 6 determines whether or not the driver of the host vehicle V has consciously confirmed safety for a place that is difficult to visually recognize when the passing time is less than 10 seconds. Evaluate driving behavior. Here, when the passing time is 10 seconds and the stop time is 5 seconds as described above, the average speed of the host vehicle V in the 5 m section between P (3) and P (8) is 3 .6 km / h, which is slower than the human walking speed (4 km / h). Therefore, when the passing time is 10 seconds or more, the driving evaluation ECU 6 does not evaluate the driving behavior of the driver as being slowed down due to a disturbance or stopped twice or more, and does not pass. When the time is less than 10 seconds, the driving behavior of the driver is evaluated. It should be noted that the section between P (3) and P (8) is determined as a determination target when the host vehicle V is stopped due to a preceding vehicle stopped near the temporary stop position. This is because it is excluded.

  When the evaluation section A is set by the driving scene determination unit 8, the driving behavior evaluation unit 12 determines that the stop time is less than the time t <b> 1 by the stop time determination unit 9 and the passing time by the passage time determination unit 11. Is determined to be less than time t2, the driving behavior of the driver of the host vehicle V in the evaluation section A is evaluated based on the transit time for the host vehicle V to pass through the evaluation section A, and the evaluation result is The data is stored in the drive recorder 7. Here, the driving behavior evaluation unit 12 evaluates the driving behavior on the assumption that the driver's safety confirmation time is longer as the passing time through which the host vehicle V passes through the evaluation section A is longer than the time t2.

  For example, the driving behavior evaluation unit 12 “pauses” when the passing time for the host vehicle V to pass through a 5 m section between P (3) and P (8) is 4 seconds or more and less than 10 seconds. If the passage time is 2 seconds or more and less than 4 seconds, it is “not paused but slow down. Is evaluated as “Cb” and when the passage time is less than 2 seconds, it is evaluated as “not even slow: Cc”.

  And after driving | running | working of the own vehicle V, driving evaluation ECU6 performs the notification of the evaluation result to a driver | operator, the advice of an advice, etc. based on the evaluation result memorize | stored in the drive recorder 7. FIG. For example, if the above-mentioned ratio of Cc evaluation is 30% or more, it is taught that “Let's stop at the temporary stop intersection.” Otherwise, if the above-mentioned ratio of Ca evaluation is 70% or less If the percentage of the Ca evaluation mentioned above is 90% or less other than that, teach "Let's make sure safety at any temporary intersection." In other cases, “That safety check at the temporary stop intersection is almost complete. It ’s wonderful. Let's continue to check the safety in this way.”

  The driving evaluation ECU 6 may reflect the past driving performance and the like when notifying the driver of the evaluation result and teaching advice. Further, as means for notifying the driver of the evaluation result and teaching advice, there are display on the display of the drive recorder 7 and the navigation system 2, and display on the display of a personal computer via the Internet. .

  Next, processing executed by the driving evaluation ECU 6 will be described with reference to FIG. FIG. 4 is a flowchart showing processing executed by the driving evaluation ECU of FIG.

  First, during traveling of the host vehicle, the travel scene determination unit 8 acquires information from the navigation system 2 (including information on a temporary stop point on the road on which the host vehicle travels), and the steering angle acquired from the steering angle sensor 3. Using the information on the vehicle, information on the vehicle speed acquired from the vehicle speed sensor 4, information on the acceleration acquired from the acceleration sensor 5, etc., the right or left turn at the intersection, lane change, acceleration or deceleration, cornering, etc. Determine. When the traveling scene is a right turn or a left turn at an intersection, the traveling scene determination unit 8 determines whether or not the host vehicle travels through the temporary stop point based on information on the temporary stop point on the road on which the host vehicle travels. Determine (S1). And when it determines with the own vehicle driving | running | working a temporary stop location, the driving | running | working scene determination part 8 sets an evaluation area to the temporary stop location where the own vehicle drive | works based on the information regarding a steering angle (curvature of a driving | running track). Set (S2).

  Subsequently, the stop time determination unit 9 determines whether or not the stop time that the host vehicle is supposed to have stopped within the evaluation section set by the traveling scene determination unit 8 is equal to or longer than the first time t1 ( S3). And when it determines with stop time being less than time t1, the passage time determination part 11 passes the evaluation area set by the driving scene determination part 8, and the passage time for which the own vehicle passes is 2nd time t2. It is determined whether or not this is the case (S4).

  As a result, when it is determined that the passing time is the second time t2, the driving behavior evaluating unit 12 is based on the passing time during which the host vehicle passes through the evaluation section set by the traveling scene determining unit 8. Then, the driving behavior of the driver of the own vehicle in the evaluation section is evaluated (S5), and the evaluation result is stored in the drive recorder 7 (S6). If it is determined in S3 that the stop time is greater than or equal to time t1, and if it is determined in S4 that the transit time is greater than or equal to time t2, the place where it is difficult to visually recognize at the temporary stop point. On the other hand, since it is difficult to perform the driving evaluation regarding whether or not the driver has consciously confirmed the safety, the process returns to the determination of S1.

  Subsequently, the driving evaluation ECU 6 determines whether or not traveling of the host vehicle has ended (S7). As a result, when it is determined that the traveling of the host vehicle has been completed, the driving evaluation ECU 6 notifies the driver of the evaluation result and teaches advice based on the evaluation result stored in the drive recorder 7. (S8).

  As described above, in the driving evaluation device 1, when the evaluation section is set at the temporary stop point at which the host vehicle is determined to travel, the stop time in the evaluation section is less than the first time t1, And when the passage time of the evaluation section is less than the second time t2, the driving behavior of the driver of the host vehicle in the evaluation section is evaluated. As a result, stopping and slowing down due to disturbance are excluded, and the driving behavior of the driver is evaluated based on the temporary stop after the driver consciously confirms safety in a place that is difficult to see. Will be. Therefore, according to the driving evaluation apparatus 1, it is possible to accurately evaluate the driving behavior of the driver at the temporary stop point.

  Further, since the traveling scene determination unit 8 sets the evaluation section based on the steering angle of the host vehicle, the driving behavior of the driver when the host vehicle turns right or left at the temporary stop point can be reliably evaluated. .

  In addition, the stop time determination unit 9 determines whether or not the passing time during which the host vehicle passes through each of the divided sections obtained by dividing the evaluation section into a plurality of times is equal to or longer than the first time t1. In order to determine whether or not the stop time at the time t1 is equal to or longer than the time t1, it is possible to reliably exclude the case where the host vehicle is assumed to have stopped in the evaluation section due to disturbance.

  In addition, the driving behavior evaluation unit 12 evaluates the driving behavior as the driver's safety confirmation time is longer as the passing time through which the host vehicle passes through the evaluation section is longer than the second time t2. As described above, since the driving behavior is evaluated based on the passing time through which the host vehicle passes through the evaluation section, it is simply and accurately determined whether or not the driver has consciously confirmed the safety for the difficult-to-view place. Can be determined.

  Moreover, since the evaluation result by the driving action evaluation part 12 is memorize | stored in the drive recorder 7, for example, after a driving | operation of the own vehicle is complete | finished, an evaluation result can be notified with respect to a driver | operator, and driving | operation improvement can be aimed at.

  The present invention is not limited to the above embodiment. For example, each processing unit in the driving evaluation ECU 6 may be configured by hardware instead of software. Further, the evaluation result by the driving behavior evaluation unit 12 may be stored in a hard disk or the like of the navigation system 2. The driving evaluation device according to the present invention can also be applied to the evaluation of the driving behavior of the driver at a temporary stop point (for example, a railroad crossing) other than the temporary stop intersection.

  The driving evaluation device according to the present invention determines whether or not an evaluation section including the divided section is to be evaluated according to the traveling state in the divided section. As an example of the running state, parameters corresponding to the passing time such as the passing speed and the stop time can be used in addition to the passing time. For example, when the passage time is equal to or longer than a predetermined time, when the passage speed is equal to or lower than the predetermined speed, when the stop time is equal to or longer than the predetermined time, it is excluded from the evaluation target.

  Then, the traveling scene determination means sets the evaluation section based on the curvature of the traveling locus of the host vehicle. The curvature of the travel locus can be determined based on vehicle state quantities such as a steering angle, an acceleration in the vehicle width direction (so-called lateral acceleration), a yaw rate, a slip angle, and the like. Further, the curvature of the travel locus can be determined based on information other than the vehicle state quantity, such as a navigation system and GPS information, imaging data outside the vehicle, and the like.

  DESCRIPTION OF SYMBOLS 1 ... Driving evaluation apparatus, 7 ... Drive recorder (memory | storage means), 8 ... Travel scene determination part (travel scene determination means), 9 ... Stop time determination part (stop time determination means), 11 ... Passing time determination part (passing time) Determination means), 12... Driving behavior evaluation section (driving behavior evaluation means).

Claims (2)

A driving evaluation device for evaluating driving by a driver,
When it is determined that the host vehicle travels through a temporary stop point, a driving scene determination unit that sets an evaluation section at the temporary stop point;
Dividing means for dividing the evaluation section into a plurality of divided sections,
A driving evaluation apparatus that determines whether or not the evaluation section including the divided section is to be evaluated according to a traveling state in the divided section.   The driving evaluation apparatus according to claim 1, wherein the traveling scene determination unit sets the evaluation section based on a curvature of a traveling locus of the host vehicle.

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