A vehicle braking system, a braking method, and a vehicle with the braking system
A vehicle braking and vehicle technology, applied in the direction of automatic starting device, etc., can solve the problem of large error in theoretical safety distance, and achieve the effect of reducing the possibility of blind spots and wide detection range
Active Publication Date: 2018-11-20
HELLA SHANGHAI ELECTRONICS
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Problems solved by technology
Then the theoretical safety distance used in the vehicle active detection anti-collision device and the actual safety distance have a large error
Method used
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[0024] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0025] refer to figure 1 , is a schematic diagram of the system structure of the vehicle braking system in an embodiment of the present invention. The vehicle braking system includes: a distance measuring unit, which can measure the distance between the vehicle and the pedestrians, vehicles or obstacles in front, and send out a signal containing the distance. The distance referred to here refers to the distance between the vehicle and the front. Pedestrians, vehicles or obstacles are regarded as the distance between two points behind the unit point; the speed measuring unit can measure the current driving speed of the vehicle, and also send out a signal containing the driving speed information; the control unit, that is, the vehicle MCU, Respectively receive the above two signals containing distance and driving speed informa...
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The invention provides a vehicle braking system. The vehicle braking system includes: a distance measurement unit for measuring the distance of a front vehicle, a pedestrian, or a barrier; a speed measurement unit for measuring the running speed of a vehicle; a control unit for receiving distance information sent by the distance measurement unit and running speed information sent by the speed measurement unit, and for outputting a braking command; a braking unit for performing braking operation on the vehicle according to the braking command; and a rainfall sensor for sending a signal containing rainfall to the control unit according to the rainfall. The control unit determines a current ground friction coefficient [mu] according to the rainfall and determines a safe speed according to the distance and the friction coefficient [mu]; the control unit compares the safe speed and the running speed, when the safe speed is less than the running speed, the control unit sends the braking command to the braking unit; and when the safe speed is greater than the running speed, the vehicle continues running. According to the technical scheme, the safe speed can be determined according to different road conditions, automatic braking is targeted, and the safety is high.
Description
technical field [0001] The invention relates to the field of automotive electronics, in particular to a vehicle braking system, a braking method and a vehicle with the braking system. Background technique [0002] In recent years, with the rapid development of the economy, more and more people have joined the ranks of car owners, and traffic accidents have become the "world's number one hazard", and China is one of the countries with the largest number of traffic accident deaths in the world. Data show that in 2009, China's car ownership accounted for about 3% of the world's car ownership, but traffic accident deaths accounted for 16% of the world's total. In 2009, a total of 67,759 people were killed and 275,000 people were injured in road traffic accidents across the country, and the direct property loss was 910 million yuan; in 2010 and 2011, the number of deaths caused by traffic accidents was 65,225 and 62,387 people respectively, ranking first for more than ten consecu...
Claims
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IPC IPC(8): B60T7/12
Inventor 陈丽娜
Owner HELLA SHANGHAI ELECTRONICS