Wireless reading circuit for passive LC resonator sensor
A resonant sensor and readout circuit technology, applied in the field of sensors, can solve the problems of large volume, high price, unsuitable for on-site use, etc., and achieve the effect of simple circuit structure, small volume, and easy implementation.
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[0014] Below in conjunction with accompanying drawing, the present invention is further described in detail:
[0015] The invention relates to a wireless readout circuit of a passive LC resonant sensor, comprising a single-chip microcomputer control module 1, a frequency sweep signal generation module 2, a radio frequency bridge detection module 3, a buffer amplification module 4, buttons 5 and a display module 6. The frequency sweep signal generating module 2, the radio frequency bridge detection module 3, the buffer amplification module 4, the button 5 and the display module 6 are respectively connected with the single-chip control module 1, and the radio frequency bridge detection module 3 is connected with the buffer amplification module 4;
[0016] The radio frequency bridge detection module 3 includes a radio frequency bridge and a readout coil 7, wherein the upper left arm 8, the lower left arm 9, and the upper right arm 10 of the radio frequency bridge are made of preci...
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