The invention relates to a method for preventing mistaking an accelerator pedal for a brake pedal. The method comprises the following steps of connecting a DSP with an accelerator pedal position sensor of an automobile, connecting the DSP with an optical coupler, connecting the optical coupler with a relay through a relay driving circuit, connecting the relay with an ECU data bus of the automobile and conducting analytical processing on voltage data sent by the accelerator pedal position sensor through the DSP, wherein when the voltage change speed surpasses a preset danger value, the DSP controls the relay to disconnect the accelerator pedal position sensor from an ECU and sends a decelerating voltage signal and a brake pedal switch closing signal to the ECU simultaneously. According to the method for preventing mistaking the accelerator pedal for the brake pedal, the use method is simple, the cost is low, modification is convenient, a large amount of modification on a whole vehicle electronic control system of the automobile is not needed, the method can be used for all existing automobiles, and the method is specially suitable for existing automobiles without installing systems for preventing pedal misapplication.
Method for preventing mistaking accelerator pedal for brake pedal
2015-10-07
Patent
Electronic Resource
English
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