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Application of Differential Capacitive Sensor in Intelligent Electronic Level [Copy link]

The application scheme of differential tilt capacitance sensor in intelligent electronic level with resolution of 0.001mm/m is proposed.
The ICL8038 integrated chip is used as the excitation power supply of differential capacitance bridge. Two LF398 chips are used to sample two voltages at the same time and AD7706 is used to
perform A/D conversion on the sampled signals. The key points of temperature and nonlinear compensation methods and experimental results are given.

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