| 摘要 |
PURPOSE: An automatic control method of a driving alarm and its device are provided to secure the safety by exactly detecting and controlling a sudden reduction and a sudden acceleration. CONSTITUTION: In feeding power, a driving alarm controller is initialized(101). A set value of detection standard is automatically changed according to a traveling speed of a vehicle by repeatedly measuring, updating and temporarily memorizing the speed with signals from a speed detecting circuit. A reduction ratio is calculated by repeatedly calculating the difference between the detected speed and the memorized speed. A warning circuit is driven by selectively detecting a sudden reduction or a sudden acceleration. A warning signal is generated automatically only by stepping a brake. Thereby, accidents are prevented.
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