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Low-speed traveling active braking method and system
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A braking system and active braking technology, applied in the direction of automatic starting device, signal device, etc., to achieve the effect of improving safety
Inactive Publication Date: 2018-03-06
CHERY AUTOMOBILE CO LTD
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Abstract
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Problems solved by technology
[0003] How to avoid the tragedy caused by the driver's misoperation when driving at low speed and reversing, there is no complete solution on the market at present
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Embodiment 1
[0049] This embodiment provides an active braking method for low-speed driving, which is applied when the vehicle speed is lower than the preset vehicle speed threshold, such as figure 1 As shown, steps S101, S102, S103, S104, and S105 are included, and each step will be described in detail below.
[0050]In step S101, the ultrasonic radar sensor detects in real time the first relative distance information and relative approach speed information between the obstacle in the traveling direction of the vehicle and the vehicle and sends it to the main control unit;
[0051] In step S102, the monocularvision sensor detects in real time the second relative distance information and type information of obstacles in the direction of travel of the vehicle and sends them to the main control unit;
[0052] In step S103, the main control unit judges whether the vehicle has a collision risk according to the first relative distance information, the second relative distance information, the ...
Embodiment 2
[0067] This embodiment provides an active braking method for low-speed driving, which is applied when the vehicle speed is lower than the preset vehicle speed threshold, such as figure 2 As shown, steps S201, S202, S203, S204, and S205 are included, and each step will be described in detail below.
[0068] In step S201, the ultrasonic radar sensor detects in real time the first relative distance information and relative approach speed information between the obstacle in the direction of travel of the vehicle and the vehicle and sends it to the main control unit;
[0069] Specifically, the driving direction of the vehicle includes two situations: backward and forward;
[0070] Specifically, the first relative distance information and relative approach speed information of obstacles detected by the ultrasonic radar sensor are transmitted to the main control unit through the CAN bus;
[0071] The speed range in which active braking works at low speeds can be set by the user on ...
Embodiment 3
[0093] This embodiment provides a low-speed driving active braking system, such as image 3 As shown, it includes an ultrasonic radar sensor 301 , a monocularvision sensor 302 , a main control unit 303 and a braking system 304 , which will be described in detail below.
[0094] The ultrasonic radar sensor 301 is configured to detect in real time the first relative distance information and relative approach speed information between the obstacle in the direction of travel of the vehicle and the vehicle and send the information to the main control unit;
[0095] Specifically, the driving direction of the vehicle includes two situations: reverse and forward;
[0096] Specifically, the first relative distance information and relative speed information of obstacles detected by the ultrasonic radar sensor are transmitted to the main control unit through the CAN bus;
[0097] The speed range in which active braking works at low speeds can be set by the user on the central control s...
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Abstract
The invention provides a low-speed traveling active braking method and system and belongs to the technical field of automobile active safety. The method and system are applied when the vehicle speed of a vehicle is lower than a preset vehicle speed threshold value. The method includes the steps that first relative distance information and relative approaching speed information between an obstaclein the vehicle traveling direction and the vehicle are detected in real time through an ultrasonic radar sensor and sent to a main control unit; second relative distance information and type information of the obstacle in the vehicle traveling direction are detected in real time through a monocularvision sensor and sent to the main control unit; the main control unit judges whether the vehicle has a crash risk or not according to the first relative distance information, the second relative distance information, the relative approaching speed information and the type information of the obstacle; when it is judged that the vehicle has the crash risk, the main control unit sends a corresponding control command to a braking system; and the braking system executes corresponding control operation according to the control command. Therefore, the accident that the vehicle crashes onto the obstacle is actively avoided in the low-speed traveling process in the urban working condition, and traveling safety is improved.
Description
technical field [0001] The invention relates to the technical field of automobile active safety, in particular to an active braking method and system for low-speed driving. Background technique [0002] In the traffic environment composed of people, vehicles and roads, vehicles are mainly driven by people. According to statistics in recent years, human subjective factors are the main cause of traffic accidents, and the resulting traffic accidents account for about 95.30% of the total accidents, of which 87.5% are caused by the fault of motor vehicle drivers. Drivers accounted for 4.7%, pedestrians and passengers accounted for 5.19%, and other personnel accounted for 2.63%. Analyzing the causes of traffic accidents over the years, it can be found that illegal operation and mistakes of drivers are the main reasons for traffic accidents. Among them, in the process of driving at low speed and reversing, tragedies caused by driver's misoperation also occur from time to time. ...
Claims
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Application Information
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