The Development Of Capacitive Electronics Level Meter Based On Sawtooth-disc Model

The design method of the new high distinguishes digital electronics level meter is described in this paper, by studying transducer, researching the principle of capacitive transducer and detecting small capacitance, and designing the signal processing system.The contents of paper contains the design of the transducer and back-end circuit of the electronics level meter. In the part of the transducer design, the merit and defect of all kinds of level transducer are described in detail, and the project of the capacitive electronics level meter based on sawtooth-disc is finished ,and the autocontrol of small capacitance detect has been realized, also, the filter measure which can improve precision is adopted. In the part of the hardware circuit design, the method and principle of the circuit design, the function and the anti-jamming of the circuit are described in detail. In the part of the software circuit design, the whole working process and implement of every module is described in detail.