Method and device for controlling the safe distance between automobiles for the automobile cruising control system

Abstract

A safe distance controlling method for an automobile cruise control system comprises employing a distance measuring radar to real-timely detect the distance between a vehicle and another vehicle ahead, transmitting the detected distance signal to a control module of the automobile cruise control system, employing a speed transducer to obtain a speed signal, transmitting the speed signal to the control module, employing the control module to compare the inputted distance signal with a preset warning distance at the current speed in the control module, sending a cruise state exit instruction signal by the control module to a executing mechanism when the distance signal is smaller than the warning distance, and simultaneously sending an deceleration and brake signal to the vehicle behind. The apparatus capable of implementing the method is composed of a distance measuring radar and an automatic cruise control device, the distance measuring radar connects with the microprocessor in the automatic cruise control device via a signal modem, an A-D converter and a digital ratio filter. The invention can effectively prevent rear-end collision accidents from occurring, and provide safety guarantee to the moving vehicles.

Description

Technical field: [0001] The present invention relates to the field of automobiles, in particular to the electronic control technology of automobile operation, in particular to the automatic cruise control technology of automobiles, in particular to a method and device for controlling the safe vehicle distance for the automobile cruise control system. Background technique: [0002] Currently, mid-to-high-end cars are equipped with automatic cruise control systems. The automatic cruise control system uses the vehicle speed signal collected by the vehicle speed sensor, and manually sets the vehicle speed value through the key switch. Both the vehicle speed sensor and the key switch are connected to a control module. The control module compares the collected speed signal with the vehicle speed value set by the driver. When the cruise vehicle speed is lower than the set value due to changes in wind resistance and road resistance, The control module will issue an instruction to i...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of method that is used for the control safe vehicle distance of automobile cruise control system, and described this method for the control safe vehicle distance of automobile cruise control system will solve the problem of automobile cruise control system in the prior art. The technical problem of being unable to perceive the roadblocks and the small distance between vehicles when the vehicle is driving

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