A kind of vehicle emergency braking pre-pressurization method and related equipment
A technology for emergency braking and vehicles, applied in the direction of automatic starting devices, etc., can solve the problems of increased collision risk, increased braking distance, and inability to complete pre-built pressure operations, etc., to increase processing time, reduce costs, and reduce the probability of false triggering Effect
Active Publication Date: 2022-06-21
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
[0003] In the existing technology, if the target suddenly appears or cuts in front of the vehicle and becomes a dangerous target, and the ADAS system has met the TTC
Moreover, in rainy and snowy days or when the tires of the own vehicle are seriously worn, the friction between the vehicle and the road is small, and the vehicle cannot achieve the maximum deceleration. At this time, the required braking distance increases. The pre-built pressure cannot guarantee that the vehicle will stop in time during the pressure build compensation time
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Embodiment Construction
[0051] Embodiments of the present invention provide a vehicle emergency brake pre-build pressure method and related equipment, the general idea is as follows: establish the reference boundary range of the pre-build pressure; monitor the target vehicle entering the above reference boundary range, and obtain the above-mentioned target vehicle Position information; obtain vehicle information and road condition information; obtain the pre-built pressure time for the above target vehicle according to the position information of the above target vehicle, the above vehicle information and the above road condition information; calculate according to the vehicle information and the road condition information Pre-built pressure advance time and preset pre-built pressure compensation time threshold; compare the above-mentioned pre-built pressure time with the preset pre-built pressure compensation time threshold to determine whether the above-mentioned target vehicle is a dangerous target;...
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The invention discloses a vehicle emergency brake pre-build pressure method and related equipment, including: establishing a pre-build pressure range; monitoring a target vehicle entering the pre-build pressure range to obtain the position information of the target vehicle; obtaining from vehicle information and road condition information; obtain the pre-build pressure time of the target vehicle according to the position information of the target vehicle and the self-vehicle information; calculate the pre-build pressure advance time according to the self-vehicle information and the road condition information; The pre-built pressure advance time is calculated to obtain a preset pre-built pressure compensation time threshold; the pre-built pressure time is compared with the preset pre-built pressure compensation time threshold to determine whether the target vehicle is a dangerous target; if the If the target vehicle is a dangerous target, a pre-build pressure command is sent. By establishing the pre-built pressure range, the boundary confirmation method is used to detect the target vehicles entering the pre-built pressure range in time, which increases the processing time for emergencies, and monitors the vehicle information and road condition information in real time, so that the pre-built pressure The process is more precise.
Description
technical field [0001] The invention relates to the technical field of vehicle emergency braking, in particular to a vehicle emergency braking pre-build pressure method and related equipment. Background technique [0002] The L2-level auxiliary emergency braking system analyzes the perception signal. When the detected target is in danger of collision, the ADAS controller of the advanced driving assistance system sends a deceleration command to the ESC actuator of the body electronic stability control system, and the ESC receives the deceleration. Braking action is performed after the command is requested, and the maximum deceleration can reach about 0.9g. But in fact, the braking ability will be affected by factors such as actuator response time, tire performance and road conditions, and cannot provide the required braking force in time. Therefore, it is necessary to pre-build pressure on the ESC actuator, and appropriately advance the ESC response time according to the act...
Claims
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IPC IPC(8): B60T7/12B60T7/22
Inventor 谢金晶周伟光盛凯王文奎
Owner DONGFENG MOTOR CORP HUBEI