Qiaoni Zhao
ABSTRACT
The raindrop sensor uses a resistance raindrop sensor to convert the collected rainfall into a voltage signal, which is an analog signal currently. After A/D conversion, it becomes a corresponding digital signal, which is sent to the CPU, that is, the MCU controller. After analysis and comparison, it is determined that the rainfall situation at this time is: if there is no rain, the wiper motor does not work; If it is light rain, the wiper motor works in the intermittent gear state; If it is moderate rain, the wiper motor wipes back and forth at low speed; If it is heavy rain, the wiper motor wipes back and forth at high speed. In this paper, an intelligent wiper controller is designed, which has both wiper motor blockage prevention design and wiper arm homing design, which improves the safety and reliability of driving.
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