Storage system and storage control device

Abstract

To provide a technique capable of appropriately storing information on support control.SOLUTION: A storage system for storing operation information of a supporting system for supporting a driver of a vehicle includes: a storage device; a first acquisition part for acquiring the operation information from the supporting system; a second acquisition part for acquiring information on driving operation of the vehicle of the driver; a determination part for determining whether or not the driving operation is first operation for suppressing support by the supporting system, on the basis of the operation information acquired by the first acquisition part and the information on the driving operation acquired by the second acquisition part; and a storage part for storing the operation information and external information on a surrounding environment of the vehicle in association with each other, and storing the information in the storage device, according to the determination that the driving operation is the first operation by the determination part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a storage system and a storage control device. [Background technology]

[0002] Patent Document 1 discloses a storage system for storing vehicle information. This system includes multiple ECUs (Electronic Control Units). When an abnormality is detected by the self-diagnosis function of any of the ECUs, a storage command for storing the vehicle information is transmitted via a communication line to the other ECUs in which no abnormality is detected. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-193070 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, it is conceivable to mount an ECU (assistance ECU) that assists the driver of the vehicle on the system described in Patent Document 1. Then, in order to verify the operation of the assistance ECU, it is conceivable to store operation information of the assistance ECU and information on the environment outside the vehicle at the timing of assistance. The system described in Patent Document 1 stores information when an abnormality is detected in any of a plurality of ECUs including the assistance ECU. For this reason, it is difficult for the system described in Patent Document 1 to store information in a scene where assistance that is unnecessary for the driver is executed even though the system operation is normal. The present disclosure provides a technology that can appropriately store information on assistance control. [Means for solving the problem]

[0005] A storage system according to one aspect of the present disclosure stores operation information of an assistance system that assists a driver of a vehicle. The storage system includes a storage device, a first acquisition unit, a second acquisition unit, a determination unit, and a storage unit. The first acquisition unit acquires operation information from the assistance system. The second acquisition unit acquires information related to the driver's driving operation of the vehicle. The determination unit determines whether the driving operation is a first operation that suppresses assistance by the assistance system based on the operation information acquired by the first acquisition unit and the information related to the driving operation acquired by the second acquisition unit. In response to the determination by the determination unit that the driving operation is the first operation, the storage unit associates the operation information with external world information related to the surrounding environment of the vehicle and stores the information in the storage device.

[0006] In this storage system, operation information is obtained from the assistance system, and information related to the driver's driving operation of the vehicle is obtained. Then, it is determined whether the driver's driving operation is a first operation that suppresses assistance by the assistance system. In response to determining that the driving operation is the first operation, the operation information is associated with external information related to the surrounding environment of the vehicle and stored. The first operation is performed when the driver does not need assistance from the assistance system. Therefore, by storing information based on the driver's first operation, the storage system can store information on a scene in which assistance that is normal in terms of system operation but unnecessary for the driver is performed. Therefore, the storage system can appropriately store information related to assistance control.

[0007] In one embodiment, the storage device includes a first storage device and a second storage device, the first storage device temporarily stores the operation information and the external environment information in association with each other, the second storage device acquires and stores information from the first storage device, and the storage unit may output an instruction to the second storage device in response to the determination that the driving operation is the first operation by the determination unit to acquire and store the operation information and the external environment information stored in the first storage device during a period preceding the timing at which the first operation was performed, among the operation information and the external environment information stored in the first storage device. In this case, even if the driver's reaction to the assistance unnecessary for the driver is delayed, the storage system can store information on the scene where the assistance unnecessary for the driver was performed.

[0008] In one embodiment, the first operation may be at least one of the driving operations: an operation to change the headlight illumination position set by the assistance system, a steering operation in the opposite direction during steering assistance by the assistance system, a braking operation during acceleration assistance by the assistance system, and an accelerator operation during deceleration assistance by the assistance system.

[0009] In one embodiment, the assistance system provides assistance by informing the driver of a target speed, the determination unit further determines whether the driving operation is a second operation of driving at a speed that deviates from the target speed notified to the driver by a threshold speed or more, and the storage unit may store the operation information and the external environment information in the storage device in association with each other in response to the determination by the determination unit that the driving operation is the second operation. The second operation is performed when the assistance content provided by the assistance system is unnecessary for the driver, similar to the first operation. Therefore, the storage system can store information on a scene in which assistance that is normal as a system operation but unnecessary for the driver is performed by storing information based on the second operation of the driver.

[0010] A storage control device according to another aspect of the present disclosure stores operation information of an assistance system that assists a driver of a vehicle in a storage device. The storage control device includes a first acquisition unit, a second acquisition unit, a determination unit, and a storage unit. The first acquisition unit acquires operation information from the assistance system. The second acquisition unit acquires information related to the driver's driving operation of the vehicle. The determination unit determines whether the driving operation is a first operation that suppresses assistance by the assistance system based on the operation information acquired by the first acquisition unit and the information related to the driving operation acquired by the second acquisition unit. In response to the determination by the determination unit that the driving operation is the first operation, the storage unit associates the operation information with external world information related to the surrounding environment of the vehicle and stores the information in the storage device. This storage control device achieves the same effect as the storage system described above. Effect of the Invention

[0011] According to the present disclosure, a technique is provided that can appropriately store information related to assistance control. [Brief description of the drawings]

[0012] [Figure 1] 1 is a block diagram of a vehicle equipped with a storage system according to an embodiment. [Diagram 2] 10 is a flowchart illustrating an example of the operation of the storage system according to an embodiment. [Diagram 3] FIG. 13 is a diagram illustrating information taken out from a buffer. [Figure 4] 10 is a flowchart illustrating another example of the operation of the storage system according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description and in each drawing, the same or corresponding elements are designated by the same reference numerals, and redundant description will not be repeated.

[0014] (Vehicle configuration) FIG. 1 is a block diagram of a vehicle equipped with a storage system according to an embodiment. As shown in FIG. 1, the storage system 1 is mounted on a vehicle 2 as an example. The vehicle 2 is mounted with an assistance system that provides driving assistance to a driver. The content of the driving assistance is not particularly limited. The driving assistance provided may be a so-called ADAS (Advanced Driver Assistance System). The ADAS may include following driving assistance, vehicle distance control assistance, ABS (Anti-lock Braking System), brake assist, steering assistance, speed control assistance, display of external environment information, and the like. The storage system 1 stores operation information of the assistance system. The operation information includes information that can identify the assistance content. For example, the operation information of the following driving assistance is information such as the steering amount, steering timing, acceleration / deceleration amount, and acceleration / deceleration timing provided by the system. The storage system 1 can record information on the assistance that the driver feels is unnecessary among the driving assistance provided by performing a function described later.

[0015] The vehicle 2 includes, as an example, an external sensor 3, an internal sensor 4, an operation detection sensor 5, a driving assistance ECU 6, an HMI (Human Machine Interface) 7, an actuator 8, a drive recorder 9, a storage control ECU 10 (an example of a storage control device), and a storage device 20. The storage system 1 is configured to include the storage control ECU and the storage device 20.

[0016] The external sensor 3 is a detector that detects external information related to the surrounding environment of the vehicle 2. The surrounding environment includes the positions of objects around the vehicle 2, the status of the objects, and the like. The external information includes the positions, shapes, colors, and the like of objects ahead on the roadway on which the vehicle 2 is traveling. The objects include vehicles, pedestrians, traffic lights, road paint, and the like. The external sensor 3 is, for example, a camera, and the external information may be image information.

[0017] The camera is an imaging device that captures an image of the external situation of the vehicle 2. As an example, the camera is provided behind the windshield of the vehicle 2. The camera acquires imaging information related to the external situation of the vehicle 2. The camera may be a monocular camera or a stereo camera. The stereo camera has two imaging units arranged to reproduce binocular parallax. The imaging information of the stereo camera also includes information in the depth direction.

[0018] The external sensor 3 is not limited to a camera, and may be a radar sensor or the like. A radar sensor is a detector that detects objects around the vehicle 2 using radio waves (e.g., millimeter waves) or light. Radar sensors include, for example, millimeter wave radar or LIDAR (Laser Imaging Detection and Ranging). A radar sensor detects objects by transmitting radio waves or light to the vicinity of the vehicle 2 and receiving the radio waves or light reflected by the objects.

[0019] The internal sensor 4 is a detector that detects the traveling state of the vehicle 2. The internal sensor 4 may include at least one of a vehicle speed sensor, an acceleration sensor, and a yaw rate sensor. The vehicle speed sensor is a detector that detects the speed of the vehicle 2. For example, a wheel speed sensor that is provided on the wheels of the vehicle 2 or a drive shaft that rotates integrally with the wheels and detects the rotation speed of the wheels is used as the vehicle speed sensor. The acceleration sensor is a detector that detects the acceleration of the vehicle 2. The acceleration sensor may include a longitudinal acceleration sensor that detects the acceleration in the longitudinal direction of the vehicle 2, and a lateral acceleration sensor that detects the acceleration of the vehicle 2. The yaw rate sensor is a detector that detects the yaw rate (rotational angular velocity) around the vertical axis of the center of gravity of the vehicle 2. For example, a gyro sensor can be used as the yaw rate sensor.

[0020] The operation detection sensor 5 is a detector that detects the driving operation of the driver of the vehicle 2. The operation detection sensor 5 includes, for example, at least one of a steering angle sensor, a lever operation detection sensor, and a pedal sensor. The steering angle sensor is a detector that detects the amount of rotation of the steering shaft of the vehicle 2. The lever operation detection sensor is a detector that detects the operation of the driver's seat operation lever (turn signal, headlight direction (high beam or low beam), etc.). The pedal sensor is a detector that detects the amount of operation of the brake pedal, the amount of operation of the accelerator pedal, etc.

[0021] The driving assistance ECU 6 functions as a driving assistance system that assists the driver of the vehicle 2. The driving assistance ECU 6 is an electronic control unit having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a CAN (Controller Area Network) communication circuit, and the like. The driving assistance ECU 6 is connected to a network that communicates using, for example, the CAN communication circuit, and is communicatively connected to the above-mentioned components of the vehicle 2. The driving assistance ECU 6 realizes a function to be described later by, for example, operating the CAN communication circuit to input and output data based on a signal output by the CPU, storing the data in the RAM, loading a program stored in the ROM into the RAM, and executing the program loaded into the RAM. The driving assistance ECU 6 may be composed of multiple electronic control units.

[0022] The HMI 7 is an interface between the occupants (including the driver) of the vehicle 2 and a system realized by the driving assistance ECU 6. The HMI 7 includes, for example, a touch display capable of displaying information and receiving operational inputs from the occupant.

[0023] The actuator 8 is a device that executes driving control of the vehicle 2. The actuator 8 includes at least an engine actuator, a brake actuator, and a steering actuator. The engine actuator controls the driving force of the vehicle 2 by changing the amount of air supplied to the engine (for example, changing the throttle opening) in response to driving operations or control signals from the driving assistance ECU 6. Note that, when the vehicle 2 is a hybrid vehicle or an electric vehicle, the engine actuator controls the driving force of a motor serving as a power source.

[0024] The brake actuator controls the brake system in response to a control signal from the driving assistance ECU 6, and controls the braking force applied to the wheels of the vehicle 2. For example, a hydraulic brake system can be used as the brake system. In addition, if the vehicle 2 is equipped with a regenerative brake system, the brake actuator may control both the hydraulic brake system and the regenerative brake system. The steering actuator controls the drive of an assist motor that controls the steering torque of the electric power steering system in response to a control signal from the driving assistance ECU 6. In this way, the steering actuator controls the steering torque of the vehicle 2.

[0025] The drive recorder 9 is a device that records images of the surroundings of the vehicle 2. The drive recorder 9 includes a camera that captures images of the surroundings of the vehicle 2 and an internal storage device. In other words, the drive recorder 9 is a device that acquires external information related to the surrounding environment of the vehicle 2. In FIG. 1, the external sensor 3 and the drive recorder 9 are shown separately for simplicity, but the drive recorder 9 may be included in the external sensor 3. The drive recorder 9 has a function of outputting images to an external storage device 20.

[0026] The storage control ECU 10 is a device that controls the storage device 20. Like the driving assistance ECU 6, the storage control ECU 10 is an electronic control unit that has a CPU, a ROM, a RAM, a CAN communication circuit, and the like. The storage control ECU 10 is connected to the storage device 20, determines the target of information to be stored by the storage device 20, and causes the storage device 20 to store the information. Alternatively, the storage control ECU 10 can cause the storage device 20 to determine the target of information to be stored by the storage device 20 and store the information.

[0027] The storage device 20 is a device that stores information, and is composed of a ROM, a RAM, an HDD (Hard Disk Drive), etc. The storage device 20 is connected to the driving assistance ECU 6, and acquires operation information from the driving assistance ECU 6. The storage device 20 is connected to the drive recorder 9, and acquires outside world information from the drive recorder 9. In the following, an example of the outside world information will be described as image information. In the storage device 20, the operation information and the image information can be associated in chronological order. The storage device 20 stores the operation information and the image information based on a control signal (an example of an instruction) output from the storage control ECU 10.

[0028] The storage device 20 may start storing the operation information and the image information in association with each other, for example, based on the timing of receiving a storage start signal output from the storage control ECU 10. The storage device 20 may start storing the operation information and the image information in association with each other, based on the timing indicated by the start trigger signal. The storage device 20 may end the storage operation after a predetermined period has elapsed from the timing of receiving the storage start signal or the timing indicated by the start trigger signal. The storage device 20 may end the storage operation at the timing of receiving a storage end signal or the timing indicated by the end trigger signal.

[0029] The storage device 20 may temporarily store the operation information and image information, and may copy a specified range of the temporarily stored information from the temporary storage area to the non-temporary storage area based on a control signal output from the storage control ECU 10. This allows the storage device 20 to store information from a period before the timing of receiving the control signal from the storage control ECU 10, that is, going back in time. To realize such an operation, the storage device 20 has a buffer 21 (an example of a first storage device) and a storage 22 (an example of a second storage device). The buffer 21 is a storage device that temporarily stores the operation information and image information. Temporarily storing means storing in a form that is overwritten or erased when the capacity exceeds a threshold or an event occurs. Generally, the buffer 21 is configured to overwrite information from the top of the time series when the capacity exceeds a threshold. This allows the buffer 21 to continuously store time-series observation data and the like for a certain period of time.

[0030] The storage 22 acquires and stores information from the buffer 21. The storage 22 acquires and stores, from among the operation information and image information stored in the buffer, the operation information and image information stored during a period instructed by the storage control ECU 10. The period instructed by the storage control ECU 10 may be a period going back a predetermined time from the timing of receiving the storage start signal or the timing indicated by the start trigger signal. The predetermined time is a time that is arbitrarily set in advance.

[0031] The storage device 20 may temporarily store the operation information and the image information, and may prohibit overwriting or erasure of a designated range of the temporarily stored information based on a control signal output from the storage control ECU 10. In this case, the storage device 20 may include either the buffer 21 or the storage 22.

[0032] In this way, the storage control ECU 10 and the storage device 20 work in cooperation to associate operation information and image information for a period designated by the storage control ECU 10, and store them in a non-temporary area. The above-mentioned processing can be realized not only by the storage control ECU 10 and the control chip provided in the storage device 20 working in cooperation, but also by the control of the storage control ECU 10 alone.

[0033] (Details of the storage control ECU) Functionally, the memory control ECU 10 includes an assistance content acquisition unit 11 (an example of a first acquisition unit), an operation acquisition unit 12 (an example of a second acquisition unit), an action determination unit 13 (an example of a determination unit), and a memory unit 14.

[0034] The assistance content acquisition unit 11 acquires operation information from the driving assistance ECU 6. As described above, the operation information includes information capable of identifying the assistance content. The operation acquisition unit 12 acquires information related to the driving operation of the driver of the vehicle 2. The operation acquisition unit 12 acquires the information related to the driving operation from the operation detection sensor 5.

[0035] The behavior determination unit 13 determines whether the driving operation is a first operation that suppresses assistance by the driving assist ECU 6, based on the operation information acquired by the assistance content acquisition unit 11 and the information related to the driving operation acquired by the operation acquisition unit 12. The behavior determination unit 13 grasps the assistance content from the operation information of the driving assist ECU 6, and grasps the driving operation from the information related to the driving operation detected by the operation detection sensor 5. Then, the behavior determination unit 13 compares the assistance content with the driving operation to determine whether the driving operation is a first operation that suppresses assistance. "Suppressing assistance" refers to a state in which the driving operation is performed so as not to exert the effect of assistance or to reduce the effect of assistance.

[0036] For example, it is assumed that the assistance content acquisition unit 11 acquires operation information from the driving assistance ECU 6 that the headlight irradiation position has been set to high beam by the driving assistance ECU 6. Then, it is assumed that the operation detection sensor 5 detects information related to a driving operation of resetting the headlights, which were set to high beam, to low beam. In this case, the behavior determination unit 13 determines that the driving operation of resetting the headlights to low beam is a driving operation that prevents the effect of the assistance of setting the headlights to high beam from being exerted, that is, a first operation.

[0037] For example, it is assumed that steering assistance is provided by the driving assistance ECU 6 and the assistance content acquisition unit 11 acquires operation information including a steering direction from the driving assistance ECU 6. Then, it is assumed that the operation detection sensor 5 detects information related to a steering operation in a direction opposite to the steering direction during steering assistance by the driving assistance ECU 6. In this case, the behavior determination unit 13 determines that the operation of changing the headlight illumination position set by the driving assistance ECU 6 is a driving operation that prevents the effect of steering assistance by the driving assistance ECU 6 from being exerted, that is, a first operation.

[0038] For example, it is assumed that the driving assistance ECU 6 provides speed assistance, and the assistance content acquisition unit 11 acquires operation information including acceleration and deceleration from the driving assistance ECU 6. Then, it is assumed that the operation detection sensor 5 detects information related to a driving operation of depressing the brake pedal during acceleration assistance by the driving assistance ECU 6. In this case, the behavior determination unit 13 determines that the brake operation during acceleration assistance by the driving assistance ECU 6 is a driving operation that prevents the steering assistance by the driving assistance ECU 6 from being exerted, that is, a first operation. Similarly, it is assumed that the operation detection sensor 5 detects information related to a driving operation of depressing the accelerator pedal during deceleration assistance by the driving assistance ECU 6. In this case, the behavior determination unit 13 determines that the accelerator operation during deceleration assistance by the driving assistance ECU 6 is a driving operation that prevents the steering assistance by the driving assistance ECU 6 from being exerted, that is, a first operation.

[0039] In response to the action determination unit 13 determining that the driving operation is the first operation, the memory unit 14 associates the action information with the outside world information and stores them in the storage device 20. This allows the action information and the outside world information at the timing when the first operation is performed to be stored.

[0040] (Storage System Operation) Fig. 2 is a flowchart showing an example of the operation of the storage system according to an embodiment. The flowchart shown in Fig. 2 is started when, for example, the operation switch of the storage system 1 is turned on by the driver during assistance by the driving assistance ECU 6.

[0041] 2, as a temporary storage process (step S10), the storage device 20 of the storage system 1 stores the operation information of the driving assistance ECU 6 and the external environment information of the vehicle 2 (e.g., image information of the drive recorder 9) in the buffer 21. As a result, the buffer 21 stores the operation information and the image information for a certain period in association with each other.

[0042] As a first acquisition process (step S12), the assistance content acquisition unit 11 of the memory control ECU 10 acquires operation information from the driving assistance ECU 6. Then, as a second acquisition process (step S14), the operation acquisition unit 12 of the memory control ECU 10 acquires information related to the driving operation from the operation detection sensor 5.

[0043] As a judgment process (step S16), the behavior judgment unit 13 of the memory control ECU 10 judges whether the driving operation is a first operation based on the operation information acquired in step S12 and the information related to the driving operation acquired in step S14.

[0044] If the driving operation is determined to be the first operation (step S16: YES), the storage unit 14 outputs a start trigger signal to the storage device 20 as an instruction process (step S18). Next, the storage device 20 extracts, as an extraction process (step S20), data stored in the buffer 21 during a period from the start trigger signal to a timing going back a predetermined time.

[0045] FIG. 3 is a diagram for explaining information taken out from the buffer. In FIG. 3, information stored in the buffer 21 is shown in chronological order as history. As shown in FIG. 3, the horizontal axis is the time axis t, and frame images G1 to G12 of the drive recorder 9 are stored in the buffer 21 in the order of capture as outside world information. Then, operation information D1 to D6 of the driving assistance ECU 6 is stored in chronological order in the buffer 21. Here, it is assumed that assistance that is unnecessary for the driver of the driving assistance ECU 6 is executed at occurrence timing H1. In response to this, it is assumed that a first operation is performed by the driver and a start trigger signal is output by the storage unit 14 (output timing H2). In this case, the storage device 20 stores the period H from timing H0 to output timing H2, which is a predetermined period T1 back from the output timing H2. Then, the storage device 20 extracts frame images G3 to G10 and operation information D2 to D5 included in the period H from the buffer 21.

[0046] Returning to Fig. 2, the memory device 20 stores the data extracted in step S20 in the storage 22 as a storage process (step S22). When step S22 is completed, or when it is determined that the driving operation is not the first operation (step S16: NO), the flowchart shown in Fig. 2 is completed. When the flowchart is completed, for example, it is determined whether or not the operation switch of the storage system 1 has been turned OFF by the operation of the occupant. If the operation switch has not been turned OFF, the process returns to step S10 and is repeated.

[0047] (Summary of the embodiment) For example, in an ADAS using a camera, false detections in camera recognition can cause operations that users find unnecessary, leading to reduced system performance and discomfort for the user. In order to determine the cause of such operations, information on the operation of the ADAS when the user felt it was unnecessary, and related information such as video at that time, are required. However, since operations that users find unnecessary are normal system operations, conventional devices cannot determine the timing to start recording.

[0048] In the storage system 1, operation information is acquired from the driving assistance ECU 6, and information related to the driving operation of the vehicle 2 by the driver is acquired from the operation detection sensor 5. Then, it is determined whether the driving operation of the driver is a first operation that suppresses assistance by the driving assistance ECU 6. In response to the determination that the driving operation is the first operation, the operation information and external information related to the surrounding environment of the vehicle 2 are associated and stored. The first operation is performed when the driver does not need assistance by the driving assistance ECU 6. Therefore, by storing information based on the first operation of the driver, the storage system 1 can store information on a scene in which assistance that is normal in terms of system operation but unnecessary for the driver is executed. Therefore, the storage system 1 can appropriately store information related to assistance control.

[0049] Since the memory device 20 includes not only the storage 22 but also the buffer 21 capable of temporary storage, the memory system 1 can store information on a scene in which unnecessary assistance for the driver is executed, even if the driver's reaction to unnecessary assistance is delayed in driving operations.

[0050] (Modification) Although exemplary embodiments have been described above, various omissions, substitutions, and modifications may be made without being limited to the above-described exemplary embodiments.

[0051] For example, the behavior determination unit 13 may detect a driving operation in a direction opposite to the steering direction by the driving assistance ECU 6 based on the detection result of the internal sensor 4 (yaw rate sensor) instead of the detection result of the operation detection sensor 5 (steering angle sensor). Information associated with the operation information may include not only external world information but also map information or host vehicle position information of a GPS.

[0052] The driving assistance ECU 6 may assist the driver as an ADAS by notifying the driver of a target speed. For example, a speed limit (one example of a target speed) obtained from a sign by image recognition may be displayed on a display panel in the vehicle cabin. Then, the behavior determination unit 13 determines whether the driving operation is a second operation of traveling at a speed that deviates from the speed limit notified to the driver by a threshold speed or more. The threshold speed is set in advance to determine whether the driving operation is the second operation. In response to determining that the driving operation is the second operation, the storage unit 14 may store the operation information and the external environment information in association with each other in the storage device.

[0053] Fig. 4 is a flowchart showing another example of the operation of the storage system according to an embodiment. The flowchart shown in Fig. 4 is the same as the flowchart shown in Fig. 3 except that step S17 is added. Below, only the differences will be described, and overlapping descriptions will not be repeated.

[0054] If it is determined that the driving operation is not the first operation (step S16: NO), the behavior determination unit 13 of the memory control ECU 10 determines whether the driving operation is the second operation based on the action information (displayed speed information) acquired in step S12 and the current vehicle speed as a second determination process (step S17). For example, if the displayed speed is 100 km / s and the current speed is 40 km / s, it is highly likely that the displayed speed is a misrecognized speed and is ignored by the driver. If the threshold speed is set to 30 km / s, a driving operation of traveling at 40 km / s is determined to be the second operation.

[0055] If the driving operation is determined to be the second operation (step S17: YES), the memory unit 14 outputs a start trigger signal to the memory device 20 as an instruction process (step S18). If the driving operation is determined to not be the second operation (step S17: NO), the flowchart shown in Fig. 4 ends. By executing the flowchart shown in Fig. 4, the memory system 1 can more appropriately store information related to the assistance control. [Explanation of symbols]

[0056] 1...memory system, 2...vehicle, 3...external sensor, 4...internal sensor, 5...operation detection sensor, 6...driving assistance ECU, 9...drive recorder, 10...memory control ECU, 11...assistance content acquisition unit (an example of a first acquisition unit), 12...operation acquisition unit (an example of a second acquisition unit), 13...action judgment unit (an example of a judgment unit), 14...memory unit, 20...memory device, 21...buffer, 22...storage.

Claims

1. A storage system for storing operation information of an assistance system for assisting a driver of a vehicle, comprising: A storage device; A first acquisition unit that acquires motion information from the support system; A second acquisition unit that acquires information related to a driving operation of the vehicle by the driver; a determination unit that determines whether the driving operation is a first operation that suppresses assistance by the assistance system based on the action information acquired by the first acquisition unit and information related to the driving operation acquired by the second acquisition unit; a storage unit that, in response to the determination unit that the driving operation is the first operation, associates the operation information with external environment information related to a surrounding environment of the vehicle and stores the associated information in the storage device; Equipped with the storage device includes a first storage device and a second storage device; the first storage device temporarily stores the motion information and the external world information in association with each other; The second storage device acquires and stores information from the first storage device, The storage unit, in response to the determination that the driving operation is the first operation by the determination unit, outputs an instruction to the second storage device to acquire and store the operation information and the external environment information stored in the first storage device during a period preceding a predetermined time from the timing when the first operation is executed, among the operation information and the external environment information stored in the first storage device. Memory system.

2. 2. The memory system of claim 1, wherein the first operation is at least one of a driving operation of changing a headlight illumination position set by the assistance system, a steering operation in the opposite direction during steering assistance by the assistance system, a braking operation during acceleration assistance by the assistance system, and an accelerator operation during deceleration assistance by the assistance system.

3. The assistance system provides assistance in notifying the driver of a target speed, The determination unit further determines whether the driving operation is a second operation of driving at a speed that deviates from the target speed notified to the driver by a threshold speed or more, 3. The storage system according to claim 1, wherein the memory unit associates the operation information with the external environment information and stores them in the storage device in response to the determination by the determination unit that the driving operation is the second operation.

4. A storage control device that stores operation information of an assistance system that assists a driver of a vehicle in a storage device, A first acquisition unit that acquires motion information from the support system; A second acquisition unit that acquires information related to a driving operation of the vehicle by the driver; a determination unit that determines whether the driving operation is a first operation that suppresses assistance by the assistance system based on the action information acquired by the first acquisition unit and information related to the driving operation acquired by the second acquisition unit; a storage unit that, in response to the determination unit that the driving operation is the first operation, associates the operation information with external environment information related to a surrounding environment of the vehicle and stores the associated information in the storage device; Equipped with the storage device includes a first storage device and a second storage device; the first storage device temporarily stores the motion information and the external world information in association with each other; The second storage device acquires and stores information from the first storage device, The storage unit, in response to the determination that the driving operation is the first operation by the determination unit, outputs an instruction to the second storage device to acquire and store the operation information and the external environment information stored in the first storage device during a period preceding a predetermined time from the timing when the first operation is executed, among the operation information and the external environment information stored in the first storage device. Storage control device.

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