火车车厢夜灯控制系统设计

Design of Night Light Control System for Railway Carriage

本设计以STC89C51单片机为核心控制火车车厢夜灯电路系统的运行。通过运用LM393电压比较器、光敏电阻、驻极体话筒等元器件设计声光控车厢夜灯系统电路。设计电路运用LM393电压比较器实现夜晚光线较暗时,有声音的情况下点亮夜灯,同时还设置光线强弱指示灯,能够更加直观感受外界光线变化。在电路中接入两个电位器,可分别控制声控、光控的灵敏度,实现灵敏度调节。通过对重要元件分析,得出总体设计方案,并对声音传感器、光敏传感器等模块实现车厢声控夜灯控制系统的硬件及软件实现过程进行了阐述,做出了实物,给出了实验效果,为车厢夜灯控制系统提供了可供选择的现实方案。

This design uses STC89 C51 SCM as the core to control the operation of night light circuit system of railway carriage.The LM393 voltage comparator,photosensitive resistor,electret microphone and other components are used to design the circuit of night light system of sound and light controlled carriage.The designed circuit uses LM393 voltage comparator to light up the night light when the light is dim and sound comes.At the same time,it also sets the light intensity indicator,which can more directly feel the change of external light.Two potentiometers are connected to the circuit to control the sensitivity of sound control and light control respectively,so as to realize the sensitivity adjustment.Through the analysis of the important components,the overall design scheme is obtained,and the hardware and software realization process of the sound sensor,light sensor and other modules to realize the sound control system of the night light of the carriage is expounded.The real object is made,the experimental effect is given,and the alternative practical scheme is provided for the night light control system of the carriage.