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Capacitive load cells have many structural forms. As long as the deformation of the elastic sensitive components is used, the capacitance changes with the applied mass, and a capacitive load cell can be constructed.

The upper and lower planes of the visceral elastic element of the flat annular elastic element respectively fix the fixed and movable plates of the capacitive sensor, when weighing. The elastic element is deformed by force. Displace the moving plate, causing the sensor capacitance to change. When the frequency modulation circuit is connected, the oscillation frequency of the oscillator is changed, the frequency signal is counted, encoded, and transmitted to the display portion.

The capacitive load cell is a row of round holes at the same height on the elastic steel body. A row of parallel plate capacitors are formed in the holes. When the upper end of the steel body is subjected to weight. Round hole deformation. The capacitance plate gap in each hole becomes smaller. The corresponding increase in capacitance is due to the capacitive parallel connection on each circuit, so the output reflects the change in average force. The measurement error decreases as the error average effect increases.

Weighing sensor, weighing module, weight transmitter, weighing control instrument, weighing application system