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A self-adaptive emergency braking control system for vehicle driving state

A technology for emergency braking and vehicle driving, applied in the direction of brakes, automatic starting devices, hydraulic braking transmission devices, etc. The effect of reducing the impact

Active Publication Date: 2022-02-11
南京车影科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides an adaptive emergency braking control system for vehicle driving conditions, which can solve the problems of low safety, robustness and applicability in the prior art

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  • A self-adaptive emergency braking control system for vehicle driving state
  • A self-adaptive emergency braking control system for vehicle driving state
  • A self-adaptive emergency braking control system for vehicle driving state

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0045] The vehicle driving state self-adaptive emergency braking control system according to the present invention, the system introduces the friction coefficient of the road surface to participate in the calculation of ttc, and adjusts the sensitivity of the AEB system and the driving comfort by dynamically adjusting the ttc threshold and braking pressure , to achieve the purpose of improving the security, robustness and applicability of the AEB system.

[0046] Specifically, in the embodiment of the present invention, the system includes: a vehicle speed sensor, a ranging radar, an AEB controller, a brake master cylinder controller, and a wireless communication interface, the wireless communication interface is used to receive the road surface friction coefficient sent by the vehicle-mounted equipment, And send it to the AEB controller, the ...

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Abstract

The invention discloses an adaptive emergency braking control system for a vehicle running state. The system includes: a vehicle speed sensor, a distance measuring radar, an AEB controller and a brake master cylinder controller. The vehicle distance of the vehicle in front and the vehicle speed of the vehicle in front, the vehicle speed sensor is used to detect the real-time vehicle speed of the vehicle, and the AEB controller calculates the time of collision ttc according to the data collected by the ranging radar and the vehicle speed sensor, and according to the three-level system The automatic control method makes the brake master cylinder controller control the entire emergency braking. The threshold calculation method in this system can dynamically adjust the ttc threshold and the braking force according to the vehicle speed during the vehicle braking phase, so that the vehicle can increase the sensitivity of the ABE system in the state of high speed or the state of rapid deceleration of the vehicle in front to obtain a better performance. Safety; reduce the sensitivity of AEB at low speed or slow deceleration of the vehicle in front, and reduce the timing of system intervention on the premise of improving safety, so as to reduce the impact on vehicle driving comfort.

Description

technical field [0001] The invention relates to the technical field of safe driving, in particular to an emergency braking control system adaptive to the driving state of a vehicle. Background technique [0002] Automatic emergency braking (Autonomous Emergency Braking, AEB) technology realizes active emergency braking by automatically controlling the brakes to avoid vehicle collisions or reduce the impact of collisions. It is one of the important means to improve vehicle driving safety. widely used. [0003] At present, the AEB technology mainly adopts the collision avoidance strategy based on the safe driving distance and the time to collision (Time to Collision, ttc). The ttc itself is the time allowance for a collision, which can intuitively reflect the urgency of the collision risk, but the safe driving distance is insufficient in evaluating the collision risk, including: [0004] (1) The road surface friction coefficient is one of the main factors affecting the braki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T7/12B60T11/18
CPCB60T7/12B60T11/18B60T2201/022
Inventor 吴士力刘奇李莉朱兰王宇博李扬石杨周颖颖
Owner 南京车影科技有限公司
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