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Forward collision prevention method and system based on electronic hydraulic braking

A hydraulic braking and anti-collision technology, applied in the field of forward anti-collision methods and systems, can solve problems such as operational errors, limited response speed, and low safety, and achieve reduced interference, increased safety performance, and improved comfort Effect

Active Publication Date: 2016-02-24
DONGFENG MOTOR CORP HUBEI
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  • Claims
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Problems solved by technology

What's more, if the driver's attention is not concentrated or the operation is wrong, the danger is still unavoidable.
The reason is that the EHB system cannot monitor the existence of danger in real time and make corresponding braking actions when the driver has no time to respond or makes an operation error, so that the occurrence of danger cannot be fundamentally avoided.
[0004] The traditional vehicle forward collision avoidance method, on the one hand, only issues a collision warning when the danger level is high, usually a simple light flashing or buzzer, which transmits relatively little information; on the other hand, the traditional forward collision avoidance The collision method only considers the early warning of the driver, and does not give early warning to the pedestrians around the vehicle
However, the traditional forward anti-collision system is limited by the structure and principle of the traditional braking system, the reaction speed is limited, there is a large error in the control of the timing of intervention, the brake cannot be implemented in time, and the safety is low

Method used

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  • Forward collision prevention method and system based on electronic hydraulic braking
  • Forward collision prevention method and system based on electronic hydraulic braking
  • Forward collision prevention method and system based on electronic hydraulic braking

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Embodiment Construction

[0044] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below according to the specific examples of the present invention and in conjunction with the accompanying drawings.

[0045] Such as figure 1 As shown, the present invention includes an environment perception unit 1 , a danger judgment unit 2 , an electronic control unit 3 , an execution unit 4 and a pedal unit 5 .

[0046] Such as figure 2 As shown, the control flow of the present invention includes the following steps:

[0047] S1: The environment sensing unit 1 collects the real-time distance s between the self-vehicle and the target vehicle, and the speed of the target vehicle v 2 , target vehicle acceleration a 2 etc., and output the collected information to the risk judgment unit 2.

[0048] S2: The danger judgment unit 2 receives all the data collected by the environment perception unit 1, and reads the speed v of the vehi...

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Abstract

The invention relates to the technical field of electronic hydraulic braking, in particular to a forward collision prevention method and system based on electronic hydraulic braking. The method includes the steps that an environment perception unit acquires and outputs environment information to a danger judgment unit; the danger judgment unit computes the pre-collision time t and judges and sends the danger level of collision to an electronic control unit; the electronic control unit sends an alarm and / or brake command to an execution unit according to the different danger levels; and the execution unit conducts alarming and / or braking according to the command. Based on an electronic hydraulic braking system, the response speed is high. According to the different danger levels, a danger alarm is given to a driver; and when the danger level is high or extremely high, a horn system can be controlled to give pedestrians a prompt that the danger exists, so that the safety of the pedestrians around vehicles is guaranteed.

Description

technical field [0001] The invention relates to the technical field of electronic hydraulic braking, in particular to a forward collision avoidance method and system based on electronic hydraulic braking. Background technique [0002] Electronic hydraulic brake system (Electronic Hydraulic Brake, referred to as EHB) and vehicle forward collision avoidance system are important components of active safety technology. As one of the representative products of brake-by-wire, the EHB system has the characteristics of good controllability and fast response. It mainly includes a brake pedal unit, an electronic control unit ECU (integrated with a pressure control unit HCU), and a series of sensors. The hydraulic connection between the brake pedal and the brake is disconnected. The form is transmitted to the electronic control unit to drive the hydraulic actuator to complete the optimal braking operation. Due to the rapid transmission of electrical signals, the pressure building tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T7/12B60Q9/00B60W30/09B60W40/08B60W10/18B60W10/06B60W40/105B60W40/107B60W40/02
CPCB60Q9/008B60T7/12B60W10/06B60W10/18B60W30/09B60W40/02B60W40/08B60W40/105B60W40/107B60W2520/10B60W2520/105B60W2540/12
Inventor 裴双红边宁刘继峰赖锋陈振飞
Owner DONGFENG MOTOR CORP HUBEI
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