LI Shi-guang, LI Yao, MENG Xiang-jie, ZHANG Xiao-jing, SUN Hong
(College of Information and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China)
Abstract： The control scheme of multifunctional refrigerant recovery and filling control system for air conditioning system is presented in this paper. The scheme of hardware circuit based on micro controller unit (MCU) MSP430 uses high-precision weighing sensor and high performance amplifier. The software program uses median average filtering algorithm. The device can recycle discarded refrigerant after purification and quantitative filling refrigerant. Meanwhile, the apparatus has the functions of recovery, filling, pressing, vaccumizing, refueling, etc. The system is proved to be of low cost, good stability and high practical value.
Key words： refrigerant; MSP430; weighing sensor; filter
CLD number： TP273 Document code： A
Article ID： 1674-8042(2014)01-0075-05 doi： 10.3969/j.issn.1674-8042.2014.01.016
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基于 MSP430 的冷媒回收加注控制系统的设计和应用
李世光， 李尧， 孟祥杰， 张晓静， 孙鸿
（山东科技大学 信息与电气工程学院， 山东 青岛 266590）
摘要:提出了一种应用于空调系统的多功能冷媒回收加注装置的控制方案。 本方案硬件电路基于 MSP430 单片机设计， 同时采用了高精度称重传感器和高性能放大器； 软件设计采用中位值平均滤波算法。 本装置不仅可以将冷媒废液净化后回收， 而且可以定量加注新冷媒。 同时， 本装置具有施压、 抽真空、 加冷冻油等功能。 实践证明， 本控制系统成本较低、 稳定性好， 具有较高的实用价值。
关键词:冷媒； MSP430； 称重传感器； 滤波器
引用格式：LI Shi-guang, LI Yao, MENG Xiang-jie, et al. Design and application of refrigerant recovery and filling control system based on MSP430. Journal of Measurement Science and Instrumentation, 2014, 5(1): 75-79. [doi: 10.3969/j.issn.1674-8042.2014.01.016]
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