洗片机是医院放射科的通用仪器 ,洗片量大 ,使用频率高 ;故机器容易出现故障。洗片机一般包括胶片传送、药液循环和补充及进排水管道系统、胶片干燥等强电电路以及弱电控制部份（单片机系统电路、控制信号采样电路）。控制电路包括如药温、烘干温度的采样 ,液面探测、进片等状 The washing machine is a general instrument in the hospital radiology department. It has a large amount of washing and a high frequency of use. Therefore, the machine is prone to malfunction. The film processing machine generally includes film transmission, liquid circulation and replenishment and inlet and outlet piping systems, film drying and other strong electric circuits and weak electric control part (MCU system circuit, control signal sampling circuit). The control circuit includes samples such as drug temperature and drying temperature, liquid level detection, film feeding, etc.