国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Based on the DSP processor, an intelligent guide instrument was designed using ultrasonic sensor, temperature sensor and micro depth sensor, the guide instrument has functions of the location, water depth, temperature measurement and intelligent alarm, and has prompt functions of voice broadcast and night warning lights. The paper focuses on the application of micro water depth sensor in intelligent guide instrument. The experimental results show that the micro water depth sensor can effectively measure water depth in the road surface, and has high detection precision and security for the blind trip on rainy day.