The Research Of Ward Control System For Multi-Purpose

Indoor Air Quality is gaining more and more attention in the society. It established strict IAQ standards in wards. The article studied the solutions of air control system in the market and introduced a brand new kind of ward control system that is based on microcontroller chip AT89S52 and several advanced sensors. The system is divided into two parts: measure system and control system. The measure system which is in the ward can transmit detected data included temperature, humidity, luminosity, CO2 concentration and dust particle concentration into the control system by CAN bus. The control system which is in the control room can transmit and receive data from PC by means of RS232 protocol. The virtual control windows developed by VC language on PC can be used to adjust the air condition in the ward.