System and method for reminding vehicles in front of and behind out-of-control truck on long downhill road section

Abstract

The invention discloses a system for reminding vehicles in front of and behind an out-of-control truck on a long downhill road section. The system comprises an inertial accelerometer, a vehicle-mounted odometer, a brake pipeline pressure sensor, a wheel rotating speed sensor, a vehicle speed sensor, a data processor, a vehicle-mounted communication device, a road side unit and an early warning device. The invention further discloses a method for reminding the vehicles in front of and behind the out-of-control truck on the long downhill road section, which comprises the following steps of: judging whether the vehicles are in the long downhill road section or not according to the gradient value i of the current lane of the vehicles and the continuous running distance L of the vehicles when the gradient value i is greater than or equal to a gradient threshold; calculating the slip rate S of the vehicles according to the vehicle brake pressure P, the real-time wheel rotating speed w and the real-time speed v; judging whether the vehicles are in a brake out-of-control state or not according to the slip rate S; and when vehicle braking is out of control, early warning is conducted on surrounding vehicles of the out-of-control vehicle. According to the invention, the early warning range is large, the early warning information is accurate, vehicles around the out-of-control vehicles can effectively obtain the early warning information, and the traffic risk is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of traffic early warning on a long downhill road section, in particular to a system and method for reminding vehicles before and after an out-of-control truck on a long downhill road section. Background technique [0002] With the rapid development of my country's economy and the accelerated construction of infrastructure, the mileage of highways in mountainous and western regions has increased rapidly. However, since there are many long and downhill road sections on mountainous roads, it poses a huge test to the braking performance of trucks. In recent years, traffic accidents caused by brake failure on long downhill roads have been frequently reported, and the traffic safety situation on long downhill roads is still very severe. [0003] Due to the large vehicle load and long braking distance of trucks, it often takes a long time to brake on long downhill roads. When the temperature of the brake pads is h...

AI Technical Summary

Problems solved by technology

[0003] Due to the large vehicle load and long braking distance of trucks, it often takes a long time to brake on long downhill roads. When the temperature of the brake pads is high and the vehicle loses its braking ability, the driver often can only remind the near by pressing the car horn. Pay attention to avoiding vehicles in the surrounding environment with a distance, the warning range is small, and the prompt information is not clear, which cannot achieve the purpose of avoiding vehicles in a long distance, so that the entire traffic environment has traffic risks

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