In the fields of energy, chemical industry, metallurgy, food, etc., it is often necessary to measure and control the mass flow of small granular or powdered materials, so a solid mass flowmeter with good reliability, high measurement accuracy and large measurement range is needed. Traditionally, impact flowmeters, belt scales, loss-in-weight scales, etc. are often used to achieve continuous measurement, which generally have some disadvantages such as low measurement accuracy, poor stability, and frequent adjustment and calibration. Coriolis flow measurement technology is a direct measurement method of mass flow that started late. Due to its unique measurement principle, it has the advantages of large measurement range, high accuracy, and insensitivity to the temperature, pressure, viscosity, density, etc. of the medium. At present, Coriolis mass flowmeter (CMF) is mainly used for the measurement of liquids and gases, and there are relatively few studies and applications for solid measurement. Schenck of Germany has a leading position in this field and has a series of relatively mature products. A few domestic manufacturers have also explored similar things, but the results are not ideal. This paper designs a solid CMF system, and uses a 32-bit cost-effective ARM core microcontroller to design its processing unit. It has a simple structure, small size, and good human-computer interaction. A large number of experiments have proved that the system has achieved high dynamic measurement accuracy and stability, and has good practical promotion value. This paper gives its design ideas and experimental results.
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