Automobile automatic speed-limiting control system and control method

Abstract

The invention discloses an automobile automatic speed-limiting control system and a control method. The automobile automatic speed-limiting control system comprises a control unit and a signal collecting unit. The control unit comprises a controller, an ABS braking device and a control valve arranged on an automobile oil supply pipeline for controlling the flow of gasoline. The signal collecting unit comprises a speed sensor used for collecting a driving speed of an automobile, a speed limit acquiring device used for collecting a speed limit value of a current driving road section and a satellite positioning device used for collecting a current driving direction of the automobile and a road condition where the automobile is located. The controller judges whether the current automobile is overspeeded or not based on signals received from the speed sensor and the speed limit acquiring device. Based on the judging signals and the information acquired from the satellite positioning device, the opening degree of the control valve and the condition of whether to activate the ABS braking device or not are confirmed. According to the automobile automatic speed-limiting control system, the effects of user-friendliness, high practicality and high safety coefficient are achieved. The invention further provides a control method which has the safe, care-free and intelligentized effect.

Description

technical field [0001] The invention relates to a speed governor used in the driving situation of a car. More specifically, the present invention relates to a vehicle automatic speed limit control system and control method used in the driving situation of the vehicle. Background technique [0002] Existing speed-limiting products are used in the driving situation of automobiles, and are mainly used to limit the driving speed of automobiles as an auxiliary when there is a strict speed limit value for highway traffic control sections, so as to achieve It does not violate traffic laws and regulations, and has a higher safety effect. [0003] Specifically, speed limit products are usually implemented in two ways: one is to install a radio frequency transmitter on the speed limit road sign and a corresponding radio frequency receiver on the car to obtain the speed limit value of each road section The second is to install a camera or driving recorder on the car to cooperate with...

AI Technical Summary

Problems solved by technology

[0004] However, in these three methods, there are certain problems. The first method needs to carry out secondary transformations on the speed limit signs and cars on each road section. In the second way, it is necessary to take pictures of the speed limit signs of each road section through a camera or a driving recorder in the process of driving the car to obtain the speed limit value information on each speed limit sign, but the photos taken are often caused by the car being kept Driving at a certain speed makes the photos taken blurry, which is not conducive to the image processor to extract the speed limit value information on the picture. Its stability cannot be guaranteed, and the effect of obtaining the speed limit value is not good. The speed limit system does not act or misoperates; the third method uses the electronic map stored in the navigator to obtain the digital signal of the speed limit value of each road section, and it does not consider the use of various methods to extract the speed limit value in the navigator. The digital signal of the speed limit value, and there is a speed limit system to reduce the driver's operation during long-term driving, which makes it easy for people to lower their vigilance and cause safety accidents. When there is no other consideration, it is very easy to cause safety accidents due to the insufficient supply of engine oil by the speed limiting system when the upward slope is relatively large, and the car cannot go up normally or reverses; or when the car is on a downward slope. When it is large, the engine oil quantity is only controlled by the speed limiting system, without considering the problem of the car's downward inertia, so the speed limiting system cannot really limit the speed of the car, and safety accidents occur

Images