JP6772603B2 - Vehicle false start suppression device - Google Patents

Description

The present invention relates to an erroneous start suppression device that suppresses erroneous start of a vehicle.

When a vehicle is to be started or the like in a situation where it should not be started or accelerated, a vehicle equipped with a device for suppressing the start or the like (erroneous start suppression device) is known. For example, Patent Document 1 describes a device for suppressing a start (erroneous start) when an attempt is made to start the own vehicle when the preceding vehicle is stopped in front or when the traffic light in front is a red light. Suppressor) is disclosed.

In the erroneous start suppression device disclosed in Patent Document 1, whether or not the erroneous start is made is determined based on the data acquired by vehicle-to-vehicle communication or road-to-vehicle communication. For example, whether or not the preceding vehicle continues to stop depending on whether or not at least one of the parking brake and the brake pedal is depressed (on) based on the driving data of the preceding vehicle acquired by vehicle-to-vehicle communication. Is determined. Further, based on the traffic light data acquired by the road-to-vehicle communication, it is determined whether or not the next signal in the traveling direction of the own vehicle is a red light. Then, based on the driving data of the own vehicle, it is determined whether or not the own vehicle starts depending on whether or not the shift position is running and the brake pedal is not operated (off).

As a result, if it is determined that the preceding vehicle immediately before the own vehicle continues to stop and the own vehicle starts, it is determined that the start of the own vehicle is an erroneous start. Further, if the next signal in the traveling direction of the own vehicle is a red light and it is determined that the own vehicle starts, it is determined that the start of the own vehicle is an erroneous start. When it is determined that the vehicle has started erroneously, for example, a warning display is displayed to notify the driver that the vehicle has started erroneously. Further, by limiting the opening degree of the throttle to reduce the engine output or forcibly increasing the braking force, the start of the vehicle is suppressed even if the accelerator pedal is depressed. This avoids a rear-end collision with the preceding vehicle and improves safety.

Japanese Unexamined Patent Publication No. 2015-176372

Here, for example, when there is an obstacle in front of the own vehicle (such as a preceding vehicle stopped due to traffic jam), if the brake pedal and the accelerator pedal are mistakenly pressed, it is necessary to suppress this as an erroneous start. On the other hand, even under a situation where the erroneous start suppressing device determines that the vehicle has started erroneously, it may not be an erroneous start and may not correspond to a starting mode that suppresses the erroneous start. For example, when the vehicle is stopped at an intersection or the like, the brake lamp of the preceding vehicle is turned off to predict the start of the preceding vehicle, and the driver depresses the accelerator pedal, it is not always necessary to suppress the start. In this case, if the shift position of the preceding vehicle is neutral, the parking brake is on, and the brake pedal is off, the brake lamp is turned off even if the preceding vehicle is stopped. In this state, even if the brake lamp is turned off, it is determined that the preceding vehicle continues to stop, and the start of the own vehicle is suppressed. On the other hand, the preceding vehicle starts immediately by setting the shift position and turning off the parking brake.

Therefore, if the start of the own vehicle is suppressed, the own vehicle may not be able to start smoothly following the preceding vehicle. In particular, when the vehicle is stopped in the middle of an uphill, the accelerator opening at the time of starting is larger than that on a flat road, so that the vehicle starting with the brake lamp of the preceding vehicle turned off may be determined to be an erroneous start. The sex becomes high. If the start is suppressed on an uphill, it becomes more difficult to follow the preceding vehicle and start the vehicle smoothly. Therefore, it is required to improve safety by suppressing erroneous start, appropriately raise (stricter) the conditions for suppressing erroneous start, and reduce unnecessary suppression of erroneous start.

Therefore, the present invention provides an erroneous start suppression device capable of suppressing erroneous start, reducing unnecessary erroneous start suppression, and starting the vehicle more smoothly.

The vehicle erroneous start suppression device of the present invention includes an imaging unit that images the brake lamp of the preceding vehicle of the own vehicle, an operating condition setting unit that sets the start suppression operating condition that suppresses the start of the own vehicle, and the own vehicle and the preceding vehicle. When the distance between the vehicle and the vehicle is within the reference distance, the false start suppression unit that suppresses the start of the own vehicle when the start suppression operation condition is satisfied, and the start that makes it more difficult to suppress the start of the own vehicle than the start suppression operation condition. suppression operating flame conditions, and a working condition changing unit that changes the setting of the start suppression operating conditions. When the brake lamp is turned off from the state in which the brake lamp is lit, the operating condition changing unit changes the setting of the starting suppression operating condition to the starting suppressing operation difficult condition, and the false start suppressing operating condition is changed to the starting suppressing operating condition. If set changed conditions, it suppresses the start of the vehicle due to the establishment of the start inhibit actuation flame conditions.

In this case, operating condition changing unit, based on inter-vehicle distance and the relative speed between the host vehicle and the preceding vehicle, changing the setting start suppression operating conditions to the calling proceeds suppression operating flame conditions.

For example, operating conditions change unit, when the inter-vehicle distance to the preceding vehicle is greater than a predetermined distance, changes the setting start suppression operating conditions to the calling proceeds suppression operating flame conditions.

Further, for example, operating conditions change unit, the relative speed of the vehicle if a rate such as to widen the inter-vehicle distance to the preceding vehicle, sets changes the start suppression operating conditions prior Symbol starting suppression operating flame conditions.

Originating proceeds suppression operating conditions is established when the operating speed of the opening degree and the accelerator pedal of the accelerator pedal exceeds a predetermined threshold. Start inhibit actuation flame conditions is established when the operating speed of the opening degree and the accelerator pedal A Kuserupedaru exceeds the larger threshold than the threshold of the start suppression operating conditions.

In addition, when the average speed of the own vehicle in the predetermined time immediately before is equal to or less than the predetermined speed, the operation condition changing unit sets the start suppression operation condition to the start suppression operation difficulty condition at the initial stage without changing the setting to the start suppression operation difficulty condition. Keep the set conditions.

According to the false start suppression device of the present invention, it is possible to suppress false start and reduce unnecessary false start suppression. As a result, the vehicle can be started more smoothly while improving safety.

The block diagram which shows the schematic structure of the erroneous start suppression device of the vehicle which concerns on one Embodiment of this invention. FIG. 3 is a control flow chart of a vehicle erroneous start suppression device according to an embodiment of the present invention. FIG. 3 is a control flow diagram of pretreatment for erroneous start suppression in the erroneous start suppression device for a vehicle according to an embodiment of the present invention. FIG. 3 is a control flow chart of an operation process of erroneous start suppression in a vehicle erroneous start suppression device according to an embodiment of the present invention. FIG. 3 is a control flow chart of an operation process of erroneous start suppression in a vehicle erroneous start suppression device according to an embodiment of the present invention. FIG. 3 is a control flow diagram of post-processing for erroneous start suppression in a vehicle erroneous start suppression device according to an embodiment of the present invention.

Hereinafter, the vehicle erroneous start suppression device according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. The erroneous start suppression device 1 of the present embodiment is a device for suppressing the start as an erroneous start when the vehicle is to be started in a situation where the vehicle should not be started. For example, the erroneous start suppression device 1 suppresses the start of the own vehicle when there is an obstacle in front of the own vehicle and the driver mistakenly presses the brake pedal and the accelerator pedal. In addition, the erroneous start suppression device 1 is characterized in that the operation of the vehicle start suppression is reduced in a situation where the start mode does not correspond to the extent that the start is suppressed. As a result, under such circumstances, the start suppression is activated to suppress the engine output and the like, but the operation is reduced and the start suppression is difficult to operate. In the description of the present embodiment, the starting is the driving mode (running state) of the vehicle including the acceleration, and is not particularly distinguished from the acceleration. The vehicle equipped with the erroneous start suppression device of the present embodiment may be a private passenger vehicle or a commercial vehicle such as a truck or a bus, and the use and vehicle type are not particularly limited.

FIG. 1 is a block diagram showing a schematic configuration of a vehicle erroneous start suppression device 1. As shown in FIG. 1, the erroneous start suppression device 1 includes an imaging unit 2, a detection unit 3, and a control unit 4.

The imaging unit 2 is a camera that captures the brake lamps of the preceding vehicle (more specifically, the preceding vehicle immediately before) of the own vehicle. As the camera constituting the image pickup unit 2, for example, a CCD camera, a CMOS camera, or the like is applied. The image pickup unit 2 is arranged in the own vehicle with the image pickup direction (light receiving unit) of the camera facing forward so that the brake lamp provided at the rear portion of the preceding vehicle can be imaged. The specific location of the image pickup unit 2 may be inside or outside the vehicle as long as the brake lamp can be accommodated within the angle of view.

The signal of the image captured by the image capturing unit 2 is transmitted to the control unit 4 as image data at any time. The control unit 4 analyzes the transmitted image data and determines whether or not the brake lamp of the preceding vehicle is lit, specifically, whether or not the brake lamp is extinguished. At the same time, the presence or absence of the preceding vehicle is also determined depending on whether or not the vehicle can be captured in front of the own vehicle.

The detection unit 3 is a sensor that detects the traveling state of the own vehicle. In the present embodiment, the detection unit 3 is configured to include three detection units 31 to 33 according to the detection target. Each detection signal obtained by these detection units 31 to 33 is transmitted to the control unit 4 as detection data at any time.

The first detection unit 31 is a vehicle speed sensor that detects the speed of the own vehicle. As the vehicle speed sensor, for example, a magnetic sensor or an optical sensor is applied. As an example, the first detection unit 31 detects the rotation speed of the drive wheels of the own vehicle and outputs a vehicle speed signal according to the rotation speed.

The second detection unit 32 is a distance sensor that detects the distance between the own vehicle and the preceding vehicle. As the distance sensor, for example, a radar such as an infrared radar or a millimeter wave radar is applied. However, if the distance between the own vehicle and the preceding vehicle can be detected, a radar other than these radars may be applied as the second detection unit 32. For example, the inter-vehicle distance between the own vehicle and the preceding vehicle may be calculated by using the position information of the own vehicle and the preceding vehicle acquired from GPS. Further, the distance between the own vehicle and the preceding vehicle may be detected by using the imaging unit 2 that captures the brake lamp of the preceding vehicle.

The third detection unit 33 is an accelerator position sensor that detects the operation mode of the accelerator pedal of the own vehicle. As the accelerator position sensor, for example, a Hall IC or the like is applied. In the present embodiment, the opening degree of the accelerator pedal (hereinafter referred to as the accelerator opening degree) and the operating speed of the accelerator pedal (hereinafter referred to as the accelerator operating speed) are detected by the third detection unit 33.

The control unit 4 is configured as a microcomputer including a CPU, a memory, an input / output circuit, a timer, and the like. The control unit 4 reads various data by the input / output circuit, performs arithmetic processing on the CPU using the program read from the memory, and controls the start suppression operation of the own vehicle based on the processing result.

The control unit 4 is configured to include an operating condition setting unit 41, an operating condition changing unit 42, and an erroneous start suppressing unit 43 in order to execute specific control. The operating condition setting unit 41, the operating condition changing unit 42, and the erroneous start suppressing unit 43 are stored in the memory as a program, for example. The program may be stored in the cloud, and the control unit 4 may be appropriately communicated with the cloud so that a desired program can be used. In this case, the control unit 4 is configured to include a communication module with the cloud. Further, the operating condition setting unit 41, the operating condition changing unit 42, and the erroneous start suppressing unit 43 may be configured as, for example, independent microcomputers.

In the present embodiment, as an example, the control unit 4 (operating condition setting unit 41, operating condition changing unit 42, and erroneous start suppressing unit 43) is configured separately from the ECU (engine control unit) 5. However, the ECU 5 may include all or part of the operating condition setting unit 41, the operating condition changing unit 42, and the erroneous start suppressing unit 43.

The operating condition setting unit 41 sets a condition for operating (starting) the start suppression of the own vehicle (hereinafter, referred to as a start suppression operation condition). The start suppression operating condition is set based on the running state of the own vehicle. In the present embodiment, the operation mode of the accelerator pedal of the own vehicle is set as one of the start suppression operation conditions, and the start suppression operation condition is set based on the accelerator opening degree and the accelerator operation speed. The initial setting condition of the start suppression operation condition, that is, the threshold value of the accelerator opening and the accelerator operation speed (reference threshold value) for suppressing the start can be arbitrarily set. In the present embodiment, as an example, an accelerator opening degree of 50% and an accelerator operation speed of 200% / sec are set as threshold values (hereinafter referred to as first threshold values). As for the accelerator operation speed, the operation speed at which the accelerator pedal is depressed in one second is 100% / second.

The operating condition changing unit 42 raises the starting suppression operating condition set by the operating condition setting unit 41, and changes the setting to the starting suppressing operation difficult condition. The start suppression operation difficulty condition is a condition in which the start suppression operation condition is raised (stricter) in order to make it difficult to suppress the start of the own vehicle. In the present embodiment, the start suppression operation condition is changed to the start suppression operation difficulty condition based on the traveling state of the own vehicle. As the traveling state of the own vehicle, the distance between the own vehicle and the preceding vehicle and the relative speed of the own vehicle with respect to the preceding vehicle are used. The relative speed of the own vehicle with respect to the preceding vehicle is calculated by the operating condition changing unit 42 based on the vehicle speed data transmitted by the first detection unit 31 and the inter-vehicle distance data transmitted by the second detection unit 32. ..

For example, the operating condition changing unit 42 sets the threshold value of the operation mode of the accelerator pedal (one of the starting suppression operating conditions in the present embodiment) that suppresses the start of the own vehicle as the distance between the own vehicle and the preceding vehicle becomes longer. , The threshold value at which start suppression is difficult to operate. Further, the operating condition changing unit 42 suppresses the start of the accelerator pedal, for example, as the relative speed of the own vehicle increases the distance between the vehicle and the preceding vehicle. Is a threshold value that is difficult to operate. In the present embodiment, the threshold values of the accelerator opening and the accelerator operation speed are set to a threshold value (second threshold value or third threshold value) at which the start suppression is less likely to be activated than the threshold value of the start suppression operation condition (first threshold value). It is being changed in stages. The second threshold value is larger than the first threshold value (accelerator opening is 50% and accelerator operating speed is 200% / sec). In the present embodiment, the accelerator opening is 60% and the accelerator is acceleratord. The operation speed is set to 300% / sec. The third threshold value is a value between the first threshold value and the second threshold value. In the present embodiment, the accelerator opening is 50% or more and 60% or less, and the accelerator operation speed is 200% / sec. As mentioned above, it is set to a predetermined value of 300% / sec or less.

On the other hand, when there is a traffic jam, the operating condition changing unit 42 does not raise the starting suppression operating condition. The determination of whether or not there is a traffic jam is performed based on the image data transmitted by the imaging unit 2 and the vehicle speed data transmitted by the first detection unit 31. For example, the operating condition changing unit 42 determines whether or not the speed of the own vehicle at the predetermined time immediately before is equal to or lower than the predetermined speed and there is a preceding vehicle. In the present embodiment, as an example, when the average speed of the own vehicle for the immediately preceding 3 minutes is 10 km / h or less and there is a preceding vehicle, the operating condition changing unit 42 determines that the vehicle is in a traffic jam. When it is determined that the vehicle is in a traffic jam, the operating condition changing unit 42 sets the threshold values of the accelerator opening degree and the accelerator operating speed to the first threshold values without raising the starting suppression operating condition. The determination as to whether or not the vehicle is in a traffic jam may be made based on the position information of the own vehicle acquired from GPS and the traffic jam information of the car navigation system.

The erroneous start suppression unit 43 is based on whether or not the brake lamp of the preceding vehicle is lit, and the start suppression operation condition set by the operation condition setting unit 41 or the start suppression operation difficulty condition set by the operation condition change unit 42. Suppress the start of your vehicle. For example, the erroneous start suppression unit 43 outputs a control signal to the ECU 5 so as to suppress the start. As a result, the ECU 5 limits the opening of the throttle to reduce the engine output, forcibly increases the braking force, and the like, so that the vehicle can start even when the accelerator pedal is depressed. Suppress. At that time, when the brake lamp of the preceding vehicle is turned off and the conditions for making the start suppression operation difficult are satisfied, the erroneous start suppression unit 43 reduces the start suppression operation of the own vehicle and makes it difficult to suppress the start. ..

2 to 6 show a flow of control performed by the erroneous start suppressing device 1 in the present embodiment. Hereinafter, the control by the erroneous start suppressing device 1 and its operation will be described according to the flow shown in FIGS. 2 to 6. The erroneous start suppression device 1 is started at the same time as the engine is started unless a special stop operation is performed, and if the distance between the obstacle in front of the vehicle and the own vehicle is within the reference distance during driving, the erroneous start suppression device 1 is suppressed. It is ready for operation. Further, the start suppression operation condition is the initial setting condition in the post-processing of the false start suppression shown in FIG. 5, specifically, the operation mode of the accelerator pedal of the own vehicle (accelerator opening and accelerator operation speed) corresponding to such condition. ) Is the first threshold (details will be described later).

As shown in FIG. 2, the erroneous start suppression device 1 sequentially performs a pre-processing (S201), an operation process (S202), and a post-processing (S203) for erroneous start suppression. The erroneous start suppression device 1 performs these processes (S201 to S203) only when the distance between the obstacle in front of the vehicle (for example, the preceding vehicle) and the own vehicle is within the reference distance, and exceeds the reference distance. If so, neither process is performed. The reference distance is a reference distance at which the false start suppression is activated, and is set to 4 m in the present embodiment. That is, if the distance between the own vehicle and the preceding vehicle is within 4 m, the false start suppression can be activated, but if it exceeds 4 m, the false start suppression is not activated.

In order to suppress the erroneous start of the own vehicle, first, as shown in FIG. 3, a pre-process for suppressing the erroneous start, in other words, a process for determining whether or not the operation of the erroneous start suppression can be reduced is performed. In such a determination process, the imaging unit 2 images the brake lamp of the preceding vehicle of the own vehicle (S301). The signal of the image captured by the imaging unit 2 is transmitted as image data to the operating condition setting unit 41 and the operating condition changing unit 42 at any time. The detection unit 3 detects the traveling state of the own vehicle (S302). Specifically, the first detection unit 31 detects the speed of the own vehicle, and the second detection unit 32 detects the inter-vehicle distance between the own vehicle and the preceding vehicle. Each of the detected detection signals is transmitted as detection data to the operating condition setting unit 41 and the operating condition changing unit 42 at any time.

The operating condition setting unit 41 analyzes the transmitted image data and determines whether or not the preceding vehicle is stopped (S303). That is, the operating condition setting unit 41 determines whether or not the brake lamp of the preceding vehicle is lit by analyzing the transmitted image data. As a result, if the brake lamp is lit, it is determined that the preceding vehicle is stopped (not running). On the other hand, if the brake lamp is off, it is determined that the preceding vehicle is running (not stopped).

When it is determined that the preceding vehicle is stopped, the operating condition setting unit 41 determines whether or not the vehicle is in a traffic jam (whether or not the own vehicle is in a congested convoy) (S304). That is, the operating condition setting unit 41 determines whether or not the average speed of the own vehicle within the predetermined time is equal to or less than the predetermined speed based on the speed data of the own vehicle transmitted within the predetermined time immediately before. In the present embodiment, as an example, if the average speed of the own vehicle for the last 3 minutes is 10 km / h or less, it is determined that the vehicle is in a traffic jam.

When it is determined that the vehicle is not in a traffic jam (for example, the average speed of the own vehicle for the last 3 minutes exceeds 10 km / h), the operating condition setting unit 41 analyzes the transmitted image data and the preceding vehicle moves. It is determined whether or not to continue the stopped state (S305). That is, the operating condition setting unit 41 determines whether or not the brake lamp of the preceding vehicle is lit, or simply whether or not the brake lamp is extinguished, by analyzing the transmitted image data. As a result, if the brake lamp is off, it is determined that the preceding vehicle starts traveling (the stopped state of the preceding vehicle is not continued). On the other hand, if the brake lamp remains lit, it is determined that the preceding vehicle continues to be stopped (the preceding vehicle does not start running).

When it is determined that the preceding vehicle starts traveling (the stopped state of the preceding vehicle is not continued), the operation process of suppressing the false start is performed as shown in FIGS. 4 and 5. In such an operation process, the operation condition changing unit 42 determines whether or not the inter-vehicle distance between the own vehicle and the preceding vehicle is within a predetermined distance (S401). The predetermined distance is set to a distance shorter than the reference distance (the inter-vehicle distance at which the false start suppression can be operated, which is 4 m in the present embodiment). In this embodiment, as an example, a predetermined distance is set to 3 m.

When it is determined that the inter-vehicle distance between the own vehicle and the preceding vehicle exceeds a predetermined distance, the operating condition changing unit 42 increases the relative speed of the own vehicle with respect to the preceding vehicle to increase the inter-vehicle distance with the preceding vehicle. It is determined whether or not there is (S402).

When it is determined that the relative speed of the own vehicle is such that the distance between the vehicle and the preceding vehicle is widened, the operating condition changing unit 42 raises the starting suppression operating condition and sets the threshold value of the accelerator operation mode to make the starting suppression operation difficult. The value corresponds to the condition (S403). That is, under the conditions for making the start suppression operation difficult, the threshold values of the accelerator opening degree and the accelerator operation speed are increased from the first threshold value to the second threshold value. In the present embodiment, as an example, the start suppression of the own vehicle is not activated until the accelerator opening degree exceeds 60% and the accelerator operation speed exceeds 300% / sec.

On the other hand, in S402, when it is determined that the relative speed of the own vehicle with respect to the preceding vehicle is not a speed that increases the distance between the preceding vehicle and the preceding vehicle, the operating condition changing unit 42 raises the starting suppression operating condition to suppress the start. Although it is a condition for making the operation difficult, the degree of pulling up (difficulty) is made smaller than that of S403 (S404). That is, under the conditions for making the start suppression operation difficult, the threshold values of the accelerator opening degree and the accelerator operation speed are increased from the first threshold value to the third threshold value between the first threshold value and the second threshold value. In the present embodiment, as an example, the start of the own vehicle is suppressed until the accelerator opening is 50% or more and 60% or less and the accelerator operation speed reaches a predetermined value of 200% / sec or more and 300% / sec or less. Does not work.

On the other hand, when it is determined in S401 that the distance between the own vehicle and the preceding vehicle is within a predetermined distance, the operating condition changing unit 42 also determines that the relative speed of the own vehicle with respect to the preceding vehicle is the distance between the preceding vehicle and the preceding vehicle. It is determined whether or not the speed is such that the speed is widened (S405).

When it is determined that the relative speed of the own vehicle is such that the distance between the vehicle and the preceding vehicle is widened, the operating condition changing unit 42 raises the starting suppression operating condition to make the starting suppression operating difficult condition. The degree of (difficulty) is made smaller than that of S403 (S406). In the present embodiment, as an example, the degree of raising (difficulty) of the start suppression operating condition is set to the same level as that of S404. That is, under the conditions for making the start suppression operation difficult, the threshold values of the accelerator opening degree and the accelerator operation speed are increased from the first threshold value to the third threshold value (similar to S404).

On the other hand, in S405, when it is determined that the relative speed of the own vehicle with respect to the preceding vehicle is not a speed that increases the distance between the preceding vehicle and the preceding vehicle, the operating condition changing unit 42 does not raise the starting suppression operating condition (S407). ). In this case, the operation condition changing unit 42 does not change the setting of the start suppression operation condition to the start suppression operation difficulty condition. Therefore, the start suppression operation condition is maintained at the initial setting condition, and the threshold values of the accelerator opening degree and the accelerator operation speed remain set to the first threshold value. It should be noted that the start suppression operation condition may be changed by setting the accelerator opening and the accelerator operation speed thresholds of the start suppression operation difficulty condition as the first threshold value.

After the start suppression operation condition is changed to the start suppression operation difficulty condition by the operation condition changing unit 42 or maintained as the initial setting condition, the erroneous start suppression operation unit 43 changes the start suppression operation condition (initial setting condition or It is determined whether or not the start suppression operation difficulty condition) is satisfied (S408). Specifically, the erroneous start suppression unit 43 has a threshold value (third) in which the operation mode (accelerator opening degree and accelerator operation speed) of the accelerator pedal of the own vehicle detected by the third detection unit 33 corresponds to the start suppression operation condition. It is determined whether or not the threshold value (1 to 3) is exceeded.

When the threshold value is exceeded and the start suppression operation condition is satisfied, the false start suppression unit 43 activates the start suppression of the own vehicle (suppresses the start) (S409). The specific method of starting suppression is not particularly limited. For example, the ECU 5 may reduce the engine output or forcibly increase the braking force. In this case, if the start suppression operation condition is maintained as the initial setting condition (the operation mode of the accelerator pedal is the first threshold value), the start suppression is operated as usual. On the other hand, if the start suppression operation condition is changed to the start suppression operation difficulty condition (the operation mode of the accelerator pedal is the second threshold value or the third threshold value), the start suppression operation is reduced and the start suppression is performed. It becomes difficult.

After activating the start suppression, the erroneous start suppression unit 43 determines whether or not a predetermined time has elapsed (S410). For example, the erroneous start suppression unit 43 operates the timer at the same time as the start suppression, and compares the elapsed time of the timer with a preset predetermined time.

When the predetermined time has elapsed, the erroneous start suppression unit 43 ends the start suppression operation of the own vehicle (S411). As a result, after that, the own vehicle can be accelerated without being restrained from starting.

Then, the erroneous start suppression unit 43 performs post-processing of the erroneous start suppression shown in FIG. 6 in preparation for the next erroneous start suppression. In such post-processing, the erroneous start suppression unit 43 determines whether or not the start suppression operation condition is changed to the start suppression operation difficulty condition (S601).

When the start suppression operation condition is changed to the start suppression operation difficulty condition, the erroneous start suppression operation unit 43 sets the start suppression operation condition to the initial setting condition, specifically, the threshold value of the accelerator opening and the accelerator operation speed. Is returned to the first threshold value (S602). For example, the erroneous start suppression unit 43 controls the operation condition setting unit 41 to set the threshold values of the accelerator opening degree and the accelerator operation speed of the start suppression operation condition to the first threshold values. On the other hand, when the start suppression operation condition is not changed to the start suppression operation difficulty condition, the erroneous start suppression unit 43 maintains the threshold values of the accelerator opening and the accelerator operation speed of the start suppression operation condition as the first threshold values. (S603). In this case, the erroneous start suppression unit 43 does not particularly control the operation condition setting unit 41 and the operation condition change unit 42, and maintains the threshold values of the accelerator opening and the accelerator operation speed of the start suppression operation condition as the first threshold values. ..

On the other hand, in S408, the threshold value corresponding to the start suppression operation condition (any of the first to third threshold values) is not exceeded, and the start suppression operation condition (initial setting condition or start suppression operation difficulty condition). If is not satisfied, the erroneous start suppression unit 43 determines whether or not the start suppression stop condition (hereinafter referred to as the start suppression stop condition) is satisfied (S412). For example, when the distance between the own vehicle and the preceding vehicle exceeds the reference distance (4 m in the present embodiment), the start suppression stop condition is applied such as stopping the engine or stopping the start suppression device 1 by the driver. Just do it.

When the start suppression stop condition is not satisfied, the erroneous start suppression unit 43 maintains the threshold values of the accelerator opening degree and the accelerator operation speed of the start suppression operation condition as they are, and repeats the operation process of the erroneous start suppression after S401. On the other hand, when the start suppression stop condition is satisfied, the erroneous start suppression unit 43 performs post-processing for erroneous start suppression after S601.

Further, in S410, when the predetermined time has not elapsed, the erroneous start suppression unit 43 keeps the threshold values of the accelerator opening and the accelerator operation speed of the start suppression operation condition (initial setting condition or start suppression operation difficulty condition) as they are. It is maintained, and the operation process of suppressing the false start after S401 is repeated.

When it is determined in S303 that the preceding vehicle is not stopped (running), the operating condition changing unit 42 does not raise the starting suppression operating condition (S407). Further, in S304, when it is determined that the vehicle is in a traffic jam (for example, the speed of the own vehicle for the last 3 minutes is 10 km / h or less), the operating condition changing unit 42 does not raise the starting suppression operating condition (S407). ). Then, in S305, when it is determined that the preceding vehicle continues to stop (the preceding vehicle does not start running) with the brake lamp lit, the operating condition changing unit 42 sets the start suppression operating condition. Do not pull up (S407). That is, in any of these cases, the start suppression operation condition is maintained at the initial setting condition, and the threshold values of the accelerator opening degree and the accelerator operation speed remain set at the first threshold value.

As described above, according to the vehicle erroneous start suppression device 1 of the present embodiment, it is possible to suppress the erroneous start of the vehicle and reduce unnecessary erroneous start suppression. For example, if there is an obstacle in front of the own vehicle (such as a preceding vehicle that is stopped due to traffic jam) and the brake pedal and the accelerator pedal are pressed incorrectly, this can be suppressed as an erroneous start. On the other hand, if it is not an erroneous start and does not correspond to a start mode that suppresses the start, the start suppression operation can be avoided. For example, while the vehicle is stopped at an intersection, the brake lamp of the preceding vehicle is turned off to predict the start of the preceding vehicle, and if the driver depresses the accelerator pedal, the start suppression is not activated. The own vehicle can follow the preceding vehicle and start smoothly. In particular, even if the vehicle stops following the preceding vehicle on the way uphill and the accelerator pedal is depressed significantly when the brake lamp of the preceding vehicle is turned off, the start of the own vehicle is not suppressed. Therefore, it is possible to improve the safety at the time of starting the own vehicle by avoiding a rear-end collision with the preceding vehicle, and to start the own vehicle from the stopped state more smoothly.

Although the embodiment of the present invention has been described above, the above-described embodiment is presented as an example and is not intended to limit the scope of the invention. Such a novel embodiment can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

In the present embodiment, the start suppression of the own vehicle is operated at three timings (threshold values), but the timing at which the start suppression is activated is not limited to three and may be divided into any number. For example, the threshold value of the accelerator pedal operation mode (accelerator opening and accelerator operation speed) is gradually (steplessly) set according to the distance between the vehicle and the preceding vehicle and the relative speed of the own vehicle that increases the distance between the vehicle and the preceding vehicle. ) May be larger. That is, the threshold value may be gradually increased as the distance between the vehicle and the preceding vehicle increases (the threshold value may be gradually decreased as the distance between the vehicle and the preceding vehicle decreases). In addition, the threshold value is gradually increased as the relative speed of the own vehicle that increases the inter-vehicle distance with the preceding vehicle increases (the threshold value is gradually decreased as the relative speed of the own vehicle that narrows the inter-vehicle distance with the preceding vehicle increases). May be good.

In the present embodiment, the erroneous start suppression device 1 includes a camera that images the brake lamp of the preceding vehicle as the imaging unit 2 in order to detect the stopped state of the preceding vehicle (continuation of the stopped state and the start of the running state). .. However, as long as the stopped state of the preceding vehicle can be detected, the false start suppression device 1 may include a radar such as an infrared radar or a millimeter wave radar instead of the imaging unit (camera).

In the above description, the false start suppression device 1 does not particularly mention that the false start suppression is inactive, but an operation mode in which the false start suppression is inactive may be arbitrarily set. For example, when the winker is operating and the steering wheel has a steering angle, it is possible not to suppress the start. As a result, it is possible to prevent the start (acceleration) from being suppressed when the vehicle changes lanes or merges, and the vehicle can smoothly change lanes.

1 ... False start suppression device, 2 ... Imaging unit, 3 ... Detection unit, 4 ... Control unit, 5 ... Engine control unit (ECU), 31 ... First detection unit, 32 ... Second detection unit, 33 ... 3 detection unit, 41 ... operating condition setting unit, 42 ... operating condition changing unit, 43 ... erroneous start suppression unit.

Claims (6)

An imaging unit that captures the brake lights of the preceding vehicle of the own vehicle,
And operating condition setting unit for setting a start suppression operating conditions of suppressing the start of the vehicle,
When the distance between the own vehicle and the preceding vehicle is within the reference distance, the false start suppression unit that suppresses the start of the own vehicle when the start suppression operation condition is satisfied,
An operating condition changing unit that sets and changes the starting suppressing operating condition to a starting suppressing operating difficult condition that makes it more difficult to suppress the start of the own vehicle than the starting suppressing operating condition.
Equipped with a,
When the brake lamp is turned off from the state in which the brake lamp is lit, the operation condition changing unit changes the setting of the start suppression operation condition to the start suppression operation difficulty condition.
The erroneous start suppression unit is characterized in that when the start suppression operation condition is changed to the start suppression operation difficulty condition, the start of the own vehicle is suppressed with the establishment of the start suppression operation difficulty condition. False start suppression device for vehicles. Said operating condition changing unit, the claims based on the headway distance and relative speed between the host vehicle and the preceding vehicle, and sets changing the start suppression operating conditions prior Symbol starting suppression operating flame conditions The vehicle erroneous start suppression device according to 1. Said operating condition changing unit, when the following distance is longer than a predetermined distance, erroneous for a vehicle according to claim 2, characterized in that the setting change the start suppression operating conditions prior Symbol starting suppression operating flame conditions starting Suppressor. It said operating condition changing unit, when the relative speed is the speed that widen the inter-vehicle distance, to claim 2, characterized in that the setting change the start suppression operating conditions prior Symbol starting suppression operating flame conditions The vehicle false start suppression device described. Before SL start suppression operating conditions, established when the opening and operating speed of the accelerator pedal A Kuserupedaru exceeds a predetermined threshold value,
The start inhibit actuation flame conditions is claim 3 opening and operating speed of the accelerator pedal before Symbol accelerator pedal, characterized in that established when exceeding the greater threshold than the threshold of the start suppression operating conditions Alternatively, the vehicle false start suppression device according to 4. When the average speed of the own vehicle in the predetermined time immediately before is equal to or less than the predetermined speed, the operation condition changing unit sets the start suppression operation condition to the start suppression operation difficulty condition without changing the setting to the start suppression operation condition. The erroneous start suppression device for a vehicle according to any one of claims 1 to 5, wherein the initial setting conditions are maintained.

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