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Study on a Moisture Measurement Method Based on Microwave Attenuation

A moisture measurement method based on microwave attenuation has been proposed. The principles of the method were analyzed theoretically and the structure of the moisture measurement instrument was designed. The microwave source, the isolator, the adjustable attenuator, the receiving antenna, the temperature sensor and the single chip microcomputer (SCM) system are all selected and designed. It can be concluded that the moisture measurement instrument with microwave attenuation method can be used in the online measurement system with high speed.