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Design and Implementation of Test and Control System for Thermal Insulating Properties of Windows

ZHANG Tiezhu,FU Yingjie,HONG Junming (School of Automation,Southeast University,Nanjing 210096,China)  
For the purpose building energy saving,this paper introduces the design and implementation of test and control system for thermal insulating properties of windows.In accordance with the requirements of field-bus technology,the system uses a microcomputer as its master computer,the measurement and control instruments as its slave computers,and twisted-pair line as its transmission medium.In addition,it realizes information exchange between the master and slave computers according to the RS-232/RS-485 serial bus standard and the interface technology.The paper also discusses how to implement,on the Visual C + + developing platform,multiple serial port communication using the serial class named as CSerialPort,as well as such functions as multi-threading,database and printing.The system realized test and control functions as required by the national standard of GB/T 8484—2002.
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