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介绍了微波理疗机中测温控温的重要性及其难点，比较了二种测温传感器的特点，论述了采用有限测量信号计算热疗温场分布方法及应用自控原理控温电路的设计。
The importance and difficulty of temperature measurement and temperature control in microwave physiotherapy machine were introduced. The characteristics of two kinds of temperature measurement sensors were compared. The method of calculating the temperature distribution of hyperthermia field with finite measurement signal and the design of temperature control circuit using self-control principle were discussed.