The Study Of The Key Technology About Microwave Density And Moisture Measuring System

Microwave Density and Moisture Measuring System is an instrument that use on the industry to measure the density and moisture of material on line. When material passes the microwave resonance, its attenuation and frequency will change. Use this principium can measure the density and moisture of material on line in the process. This paper discusses the all course from measure principium, design of the software and hardware, measure implement, results of measure output, design of reliability, analyze experimentation result, optimize the design etc. This Measuring System's hardware consists of microprocessor, microwave resonator and its constant temperature control, frequency synthesizer and demodulation, signal transfer etc. The software will complete Automatic Control and execute, data sampling and calculating. The develop of this Measuring Instrument come down to the technology of electro circuit of locking frequency and phase detecting, small signal detect, calibration etc, and it has many type of interface to the up instrument.The application of Microwave Density and Moisture Measuring System can improve the product's capability and the safety of worker. At last it can improve the ability to compete of the machine's market.