The invention provides a forward anti-collision prewarning method based on an infrared sensor. The forward anti-collision prewarning method comprises the following steps: S1, measuring the distance D from a vehicle to a front vehicle through the infrared sensor; S2, reading the speed and the acceleration of the vehicle from a CAN bus; S3, according to safety distance formulae, calculating a safety distance, wherein the safety distance formulae are as follows: Dw=V<2>/2(a-f)+V*(T+s) and Dbr= V<2>/2(a-f)+V*Ts, in which Dw is an alarm distance, Dbr is an automatic braking distance, V is the speed of the vehicle, a is the acceleration of the vehicle, f is an acceleration modification value, T is the braking time, Ts is the automatic braking response time and s is a braking time modification value; as further improvement, S4, according to the safety distance calculated in the step 3, judging and doing corresponding actions. The forward anti-collision prewarning method has the benefits as follows: according to different prewarning levels, a vehicle owner is warned or the actions are performed on the vehicle or the like, so that the effect of preventing collision is achieved, rear-end collision accidents are effectively reduced and traffic accidents are reduced.


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    Title :

    Forward anti-collision prewarning method based on infrared sensor


    Contributors:
    HE ZHAODAN (author) / WANG XIN GANG (author)

    Publication date :

    2015-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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