Vehicle rear-end collision preventing system and method based on road surface conditions

A road condition and anti-collision technology, applied in vehicle components, input parameters of external conditions, control devices, etc., to improve early warning safety, avoid slow calculation speed, and enhance adaptability

Inactive Publication Date: 2016-01-13
JILIN UNIV
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  • Claims
  • Application Information

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  • Vehicle rear-end collision preventing system and method based on road surface conditions
  • Vehicle rear-end collision preventing system and method based on road surface conditions
  • Vehicle rear-end collision preventing system and method based on road surface conditions

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Embodiment Construction

[0027] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] Refer to attached figure 1 , 2 , ego vehicle in the same lane with v 1 is traveling at a speed of , while the vehicle ahead is traveling at v 2 The driving information acquisition device determines the current relative speed and relative distance of the two vehicles, combined with the data information storage unit to determine the current driver characteristics and the value of the warning safety distance and braking safety distance under the condition of road adhesion. When the two vehicles When the relative distance d is less than the warning safety distance, the vehicle judges that there is a potential safety hazard and triggers the tactile alarm device; if the driver has no relevant braking measures, the relative distance d between the two vehicles is less than the braking safety distance D w , the automatic braking...

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Abstract

The invention discloses a vehicle rear-end collision preventing system and method based on road surface conditions. The system comprises a driving information obtaining device, a safe state judgment device, a touch alarm device, an autonomous brake output device and a data information storage unit. The driving information obtaining device comprises a distance measuring sensor, a wheel speed sensor and an in-tire sensor and is used for sensing vehicle motion information and the road surface attachment state; the safe state judgment device is used for selecting target deceleration through driver characteristics based on the different road surface conditions, inputting the target deceleration into a safe distance module, and comparing the vehicle relative distance with the current relative distance to determine the real-time operating safe state of a vehicle; the touch alarm device comprises a touch sensor installed on the surface of a driver seat and a touch sensor installed on an accelerator pedal. Road information and vehicle information can be obtained through the multiple sensors, an alarm is given or autonomous brake measures are taken in time according to the safe state of the current vehicle, vehicle rear-end collision can be effectively avoided, and road potential safety hazards are reduced.

Description

Technical field: [0001] The invention relates to the field of automobile active safety, which is used for actively avoiding rear-end collision accidents during vehicle running. Background technique: [0002] Worldwide, more than 500,000 people die every year, and 10 million people are injured in traffic accidents. On average, at least one person dies in traffic accidents every minute, and rear-end collisions account for nearly half of them. In the accidents, about 80% of the accidents are caused by reasons such as driver's distracted judgment and decision-making errors. According to the research results of Euro-NCAP, if the driver is warned before 0.5s of rear-end collision, the number of traffic safety accidents can be reduced by 50%; at the same time, if the driver is warned 1s before the accident, about 90% % of accidents can be completely avoided, thereby greatly reducing the degree of casualties and economic losses of accidents. Therefore, the research on automobile a...

Claims

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Application Information

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IPC IPC(8): B60W30/095B60W30/09B60W50/16
CPCB60W30/09B60W30/095B60W40/064B60W40/101B60W50/16B60W2554/80B60W2554/801
Inventor 郑宏宇马申奥吴轩何磊陈国迎宗长富
Owner JILIN UNIV
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