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Research on Wireless Smart Temperature Controller for Low-Temperature Radiation Ground Heating

Author: XiaoGuoKai
Tutor: CaiManJun
School: Yanshan University
Course: Control Theory and Control Engineering
Keywords: Low - temperature radiant floor heating Temperature control SCM Fuzzy PID Wireless communication C programming language
CLC: TP273.5
Type: Master's thesis
Year: 2011
Downloads: 72
Quote: 0
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Abstract


With the continuous improvement of living standards, the requirements of home comfort, combined with an increasing number of foreign immigrants to settle in China, posed a challenge to the traditional heating way. The low-temperature radiant floor heating comfort, health, environmental protection, energy conservation, etc. gradually become the preferred way of heating, low temperature radiant floor heating technology has also become the focus of research in the HVAC field. This paper first discusses the hardware design of the low-temperature radiant floor heating systems, including the design and selection of some of the major components of the various functional circuits. Since the ultimate goal of the design is a market-oriented, so the cost to consider when making hardware design. Second, to discuss the software development of the low-temperature radiant floor heating system, which is the main design work. The procedures of the system design includes design of the A / D conversion process, the wireless communication program design, time / timing function program design, timed on / off function program design and temperature calibration function program design aspects. For more in-depth and detailed description of the program design, the paper gives the detailed procedures described flowcharts and part of the C language code. Carried out a detailed study of the control method of low-temperature radiant floor heating system. First, according to the basic principles of heat transfer, and straight through the structure of the low-temperature radiant floor heating systems, and derive a simplified dynamic mathematical model of the low temperature radiant floor heating system. Impossible to determine in advance due to the practical application of the thermostat a wide range of environments and objects, even if its parameters in determining the location of variability and nonlinear, so the thermostat extremely robust fuzzy PID control algorithm and traditional PID control method the Matlab simulation comparative analysis. The simulation results and the actual running control results have proved the effectiveness of the control algorithm. Low temperature radiant floor heating system hardware design, software programming, and control method development, design and production of wireless smart thermostat prototype and test its performance in the low-temperature radiant floor heating simulation lab. Multiple influencing factors for the low-temperature radiant floor heating system, carried out a number of experiments, experimental results demonstrate the The wireless intelligent design of this project thermostat control high precision, stable operation, and can be used in real life.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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