| With the development of China heating system reform, fare based on quantity of heat will come consequentialy. Temperature-control system indoor will become the social requirement to the heating user. Design a set of temperature-control system indoor in the thesis. Select the master and slave structure in the whole system, ie. which is made of one master controller and several slave master ones. The master communicates to the salves by RS-485. Choose AT89S51/52 singlechip as the center controller, digital temperature sensor as the collecting element, LCM as the display sector. Using the keyboard and LCM set the temperature and relevant time. LCD module can display the temperature of each room and the state of each valve also. Realize the temperature control by driving the bistable state electromagnetic valve, which can cut and open the way of water into the heater.
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