Abstract: Operating room centralized control system uses a PLC and multiple touch-screen communication and control technology to integrate a variety of strong,weak electrical control,information and communication control in one set to realize the control of the air-conditioning,lighting,temperature and humidity,time,and so on,in the operating room.In this thesis,to solve the communication and control of a multi-screen control and air conditioning unit temperature PID regulator control problem.The system is developed to replace the traditional manual operation control,and simplify the original distributed control equipments in the operating room; furthermore,the height and angle of,the touch screen are adjustable,convenient for medical personnel to read the relevant information and control the related equipment,which greatly improves the work efficiency of the surgical procedure.

Key words: operating room, centralized control, touch screen, PLC