A vehicle speed limit warning protection system and its control method

Abstract

The invention provides an automobile speed limit warning and protection system and a control method thereof. The system includes a vehicle-mounted radar that can track the speed and distance of the vehicle in front and a vehicle-mounted sensor that can obtain its own vehicle speed. The vehicle-mounted radar and vehicle-mounted sensor are connected to the input terminal of the single-chip microcomputer that can process their information, and the output terminal of the single-chip microcomputer is connected to the alarm device. And the car automatic braking device is connected. The control method of the system includes the following steps: ① Both the vehicle radar and the speed sensor transmit the obtained vehicle speed or distance information to the single-chip microcomputer; ② analyze through the single-chip microcomputer: issue an alarm and judge whether to start the automatic braking device of the vehicle. In this system, when the alarm device sends out a warning, if the driver and passengers can take braking measures in time within a certain period of time, so that the speed of the vehicle can be reduced to the requirement of safe driving, the single chip microcomputer will no longer start the automatic braking device of the car, and its control method is more Humanized, can effectively avoid the occurrence of rear-end collision accidents.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automobile speed limit warning and protection system and a control method thereof. Background technique [0002] As we all know, the speed of the vehicle is a very important reason in the causes of traffic accidents, but an important reason that cannot be ignored in the accidents caused by vehicle collisions is the distance between vehicles. Collisions between front and rear vehicles are caused, especially on expressways. Rear-end collisions are common and common traffic accidents. However, there are only specific road sections with limited speed and distance signs on expressways. It can be seen that they occur on roads with no speed and distance signs. Accidents are more likely. Contents of the invention [0003] The main purpose of the present invention is to provide a vehicle speed limit warning and protection system for all road sections. [0004] In order to achieve the pur...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the speed of the vehicle is a very important reason in the causes of traffic accidents, but an important reason that cannot be ignored in the accidents caused by vehicle collisions is the distance between vehicles. Collisions between front and rear vehicles are caused, especially on expressways. Rear-end collisions are common and common traffic accidents. However, there are only specific road sections with limited speed and distance signs on expressways. It can be seen that they occur on roads with no speed and distance signs. Accidents are more likely

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