Freight vehicle speed control system and method

Abstract

The invention discloses a freight vehicle speed control system and method. The system comprises a vehicle-mounted controller, an engine power device management module, a rotating speed sensor, a vehicle-mounted gyroscope, a voice prompt device, and a radar sensor disposed at the front end of a vehicle, wherein the engine power device management module, the rotating speed sensor, the vehicle-mounted gyroscope, the voice prompt device and the radar sensor are connected with the vehicle-mounted controller. The running speed and the running horizontal state of a vehicle are obtained in real time,meanwhile, the vehicle speed is controlled by adjusting fuel supply of an engine in combination with obstacle information in front of the vehicle, it is ensured that the vehicle speed is kept at the optimal economic vehicle speed to the maximum extent, and the use frequency and strength of a brake device are reduced through long-distance fuel cut-off sliding; and therefore, the stability of the efficiency of a braking system is ensured, and the driving safety of the vehicle is improved. The vehicle driving state is obtained through the vehicle-mounted gyroscope, so that the current road gradient can be effectively judged, road auxiliary information is provided for a driver, a safe driving environment is provided for a truck, fatigue caused by long-term driving is effectively reduced, and driving safety is improved.

Description

technical field [0001] The invention relates to an intelligent control system for freight vehicles, in particular to a speed control system and method for freight vehicles. Background technique [0002] With the improvement of vehicle power technology and the rapid development of expressways, the requirements for high-speed, safe and economical operation of freight vehicles are becoming increasingly urgent. Problems such as brake overheating and friction lining wear caused by high-speed braking or frequent deceleration braking of freight vehicles are serious. Threatening the safety of the vehicle, the braking system of the existing vehicle is limited by its own performance, and it is more and more difficult to meet the safety requirements of the vehicle braking. At the same time, frequent braking in the high-speed state of the vehicle also reduces the economy of the vehicle. Due to the considerable limitations of the driver's natural perception, it is difficult to guarantee...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of vehicle power technology and the rapid development of expressways, the requirements for high-speed, safe and economical operation of freight vehicles are becoming increasingly urgent. Problems such as brake overheating and friction lining wear caused by high-speed braking or frequent deceleration braking of freight vehicles are serious. Threatening the safety of vehicles, the braking system of existing vehicles is limited by its own performance, and it is becoming more and more difficult to meet the safety requirements of vehicle braking

At the same time, frequent braking in the high-speed state of the vehicle also reduces the economy of the vehicle.

Due to the considerable limitations of the driver's natural perception, it is difficult to guarantee the safety of the vehicle at high speed. At the same time, the driver's safety concerns also prevent the power of the truck from being fully utilized, thus restricting the improvement of the vehicle economy. Most of the trucks are used for long-distance transportation. Affected by the mental state of the driver, it is impossible to accurately judge the formation of the vehicle during driving, which often leads to accidents caused by the vehicle speeding, or it is impossible to make an accurate judgment on the road conditions during the driving process. For example, when going downhill, the fuel supply and braking system of the vehicle cannot be effectively judged, causing the vehicle to drive too fast, or lose concentration and miss the best braking time

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