CN111516631A - Passive pedestrian protection and collision buffering protection system based on ADAS sensor - Google Patents

Abstract

The invention discloses a passive pedestrian protection and collision buffer protection system based on ADAS sensors, including the passive pedestrian protection and collision buffer protection system. , if the vehicle collides with a person, the BCM or ACU will send a pop-up signal to the passive pedestrian protection and collision buffering protection system, and the passive pedestrian protection and collision buffering protection system will bounce the hood to protect pedestrians after receiving the pop-up signal; If the collision recognition result is non-human, the BCM or ACU will not send an action signal to the passive pedestrian protection and collision buffer protection system. The present invention solves the problem of false lift of the cover caused by collision with non-human objects, and greatly improves the economy of vehicle collision repair and the safety performance of the whole vehicle.

Description

Passive pedestrian protection and collision buffer protection system based on ADAS sensor

technical field

The invention belongs to an intelligent auxiliary driving system, in particular to a passive pedestrian protection and collision buffer protection system based on ADAS (Advanced Driving Assistance System) sensors.

Background technique

The typical model that applies the collision buffer protection system is the Honda Accord. The Accord is installed with a living hinge at the end of the hood, and when it collides with a pedestrian, the hinge will drive the hood to pop up, so as to achieve the effect of buffering and protecting pedestrians. At the same time, the collision space reserved by the front fenders and bumpers can also play a buffering role.

Compared with the ordinary hood, the production cost of the hood with the collision buffer protection system is higher, and once the collision buffer protection system is triggered, the hood can only be repaired by replacing it as a whole. The previous Honda Accord The "hood door" that popped up, that is, the collision buffering protection system is highly sensitive due to its high design sensitivity, and many car owners scoffed at the phenomenon that hitting a small animal or rear-end collision can cause the hood to pop up. This goes against the definition that the collision buffer protection system is limited to people.

SUMMARY OF THE INVENTION

In view of the problems existing in the background art, the purpose of the present invention is to provide an ADAS sensor-based passive pedestrian protection and collision buffer protection system whose target is limited to people.

In order to achieve the above object, the passive pedestrian protection and collision buffering protection system based on ADAS sensor designed by the present invention includes passive pedestrian protection and collision buffering protection system. The target type is identified, and when the vehicle collides with a person, the BCM or ACU will send a pop-up signal to the passive pedestrian protection and collision buffer protection system, and the passive pedestrian protection and collision buffer protection system will pop up the hood after receiving the pop-up signal. Pedestrian; if the recognition result is non-human in the collision of the vehicle, the BCM or ACU will not send an action signal to the passive pedestrian protection and collision buffer protection system. The FAS-Cam and the front surround view camera identify the type of target in front of the vehicle and periodically transmit it to the BCM or ACU.

Preferably, the method for judging that the target in front of the vehicle is a person is: the method for judging that the target in front of the vehicle is a person is: firstly, the FAS-Cam performs recognition and determination, and then the front surround-view camera performs recognition and determination; if the FAS-Cam recognizes that the target is non-human, and the front If the confirmation result of the surround-view camera is also non-human, the type of the target in front of the vehicle is determined to be non-human, otherwise, the type of the target in front of the vehicle is determined to be human.

Preferably, when a collision occurs, only the pedestrian signal from the FAS-Cam and/or the front surround view camera is stored by the BCM or ACU, and the collision signal determined by the G-value sensor and the pressure sensor is received, and the current vehicle speed exceeds the manufacturer's setting. Passive pedestrian protection is activated only at the lowest collision speed, and the device is activated.

The beneficial effects of the present invention are: the present invention solves the problem of false lift of the hood caused by the collision with non-human objects, and greatly improves the economy of vehicle collision repair and the safety performance of the whole vehicle.

Description of drawings

Fig. 1 is the system block diagram of the present invention

FIG. 2 is a logical block diagram of Embodiment 1 of the present invention

FIG. 3 is a logical block diagram of Embodiment 2 of the present invention

Detailed ways

The technical solutions (including the preferred technical solutions) of the present invention will be further described in detail below by means of Fig. 1 to Fig. 3 and by way of enumerating some optional embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Embodiment 1, as shown in Figure 1 and Figure 2:

When the vehicle is driving normally, the FAS-Cam (Front Active Safety Camera) and the Front Surround View Camera identify the type of objects in front of the vehicle and periodically transmit them to the BCM (Body Controller). When a collision occurs, the G-value sensor and the pressure sensor send signals to the BCM, and the BCM will decide whether to trigger pedestrian protection based on the target type data recognized by the FAS-Cam and the front surround view camera. The signal is sent to the pedestrian protection device, and the hood is lifted to protect the pedestrian; if the FAS-Cam and the front surround view camera determine that the collision object is not a person, the BCM will not activate the passive pedestrian protection device.

The method for judging that the target in front of the car is a human is: firstly, the FAS-Cam will identify and determine, and then the front surround view camera will identify and determine; The type of the target in front of the vehicle is non-human, otherwise, the type of the target in front of the vehicle is determined to be human.

When a collision occurs, on the premise that the BCM periodically obtains the target type in front of the vehicle, the BCM reads the speed value on the ESC (Automotive Electronic Stability Control System) and determines whether the current speed exceeds the preset minimum collision speed. Passive pedestrian will only be activated if the BCM stores the pedestrian signal from the FAS-Cam and/or the front surround view camera, receives the collision signal determined by the G-value sensor and the pressure sensor, and the current vehicle speed exceeds the minimum collision speed V set by the manufacturer Protection, start the device.

Embodiment 2, as shown in Figure 3:

When the vehicle is driving normally, the FAS-Cam (Front Active Safety Camera) and the Front Surround View Camera identify the type of objects in front of the vehicle and periodically transmit them to the ACU (Airbag System Control Unit). When a collision occurs, the G-value sensor and the pressure sensor send signals to the ACU, and the ACU will decide whether to trigger pedestrian protection based on the target type data recognized by the FAS-Cam and the front surround view camera. The signal is sent to the pedestrian protection device, and the hood is lifted to protect the pedestrian; if the FAS-Cam and the front surround view camera determine that the collision object is not a person, the ACU will not activate the passive pedestrian protection device.

The method for judging that the target in front of the car is a human is: firstly, the FAS-Cam will identify and determine, and then the front surround view camera will identify and determine; The type of the target in front of the vehicle is non-human, otherwise, the type of the target in front of the vehicle is determined to be human.

When a collision occurs, on the premise that the ACU periodically obtains the target type in front of the vehicle, the ACU reads the speed value on the ESC (Automotive Electronic Stability Control System) and determines whether the current speed exceeds the preset minimum collision speed. Passive pedestrian will only be activated if the ACU stores the pedestrian signal from the FAS-Cam and/or the front surround view camera, receives the collision signal determined by the G-value sensor and the pressure sensor, and the current vehicle speed exceeds the minimum collision speed V set by the manufacturer Protection, start the device.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, combination, replacement, improvement, etc. made under the spirit and principle of the present invention are included in the within the protection scope of the present invention.

Claims (4)

1. a passive pedestrian protection based on ADAS sensor and collision buffering protection system, comprise passive pedestrian protection and collision buffering protection system, it is characterized in that: utilize the FAS-Cam on ADAS and front surround view camera to identify the target type in front of the vehicle, If the vehicle collides with a person, the BCM or ACU will send a pop-up signal to the passive pedestrian protection and collision buffering protection system, and the passive pedestrian protection and collision buffering protection system will lift up the hood to protect the pedestrian after receiving the pop-up signal; the vehicle collides If the recognition result is non-human, the BCM or ACU will not send an action signal to the passive pedestrian protection and collision buffer protection system. 2. The ADAS sensor-based passive pedestrian protection and collision buffer protection system according to claim 1, wherein the FAS-Cam and the front surround view camera identify the type of the target in front of the vehicle, and periodically transmit it to the BCM or ACU. 3. the passive pedestrian protection and collision buffering protection system based on ADAS sensor according to claim 1, is characterized in that, the judging method that the target in front of the vehicle is a person is: the judging method that the target in front of the vehicle is a person is: firstly carried out by FAS-Cam Recognition and judgment, and then the front surround view camera is used for identification and judgment; if the FAS-Cam recognizes as non-human, and the confirmation result of the front surround-view camera is also non-human, the type of the target in front of the car is determined to be non-human, otherwise, the target in front of the car is determined. Type is human. 4. The passive pedestrian protection and collision buffering protection system based on ADAS sensor according to claim 1, is characterized in that: when collision occurs, only the pedestrian signal from FAS-Cam and/or front surround view camera stored by BCM or ACU, And only after receiving the collision signal determined by the G-value sensor and the pressure sensor, and the current vehicle speed exceeds the minimum collision speed set by the manufacturer, the passive pedestrian protection will be activated and the device will be activated.

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