| China is an expansive country with rich solar energy and geothermal energy. Ground source heat pump can use underground shallow layer soil energy to keep cool in summer and warm in winter by consuming little highstand electrical energy to realize lowstand energy transfer. Solar energy can use both as the heat source in the north and the source of domestic hot water annual for building. The application of ground source heat pump and solar energy is an effective way for building energy saving and environmental protection in china.This paper introduces a data acquisition and monitoring system which is designed for solar thermal collectors, ground heat exchanger and heat pump operating singly or combined with each other. After the construction of experimental table and installation of measuring equipment, we make a monitoring strategy, then draw the electric schematic diagram, making circuit board, compiling program to realize data acquisition, display, storage and communication etc. This monitoring system includes four parts. They are temperature collection system based on microcontroller, intelligent instrument collection system, analog input card collection system, PC system. The monitoring system’s hardware and software design are mainly discussed in this paper. The hardware includes choosing of chips and analysis of circuit. The software includes the realization of each part’s collection system, communication with PC and data management.After the commissioning and operation of solar energy/ geothermal energy/heat pump experimental table, the data acquisition and monitoring system performs steady and reliable. This monitoring system provides experimental data for the researching of soil temperature, the collection of solar energy and the system’s thermal balance etc. It also plays an important part in the educating & researching in college and promoting solar energy and ground source heat pump industrialization and marketability. |
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