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申请号:201310160987.9【公开号】CN103278181A【公开日】2013.09.04【分类号】G01D5/12(2006.01)I【申请日】2013.05.03【申请人】东南大学【发明人】陈洁;张聪;雷双瑛;秦明【摘要】本发明公开了一种无源LC谐振式传感器的无线读出电路,包括单片机控制模块、DDS扫频信号发生模块、射频电桥检测模块、缓冲放大模块以及按键和显示模块,其中射频电桥四个臂分别由三个50Ω精密电阻和一个读出线圈构成,读出线圈和无源LC传感器构成松耦合变压器。本发明的无线读出电路结构简单,易于实现,
Application Date: 201310160987.9 【Publication Number】 CN103278181A 【Publication Date】 2013.09.04 【CateGory Index】 G01D5 / 12 【Filing Date】 2013.05.03 【Applicant】 Southeast University 【Inventor】 Chen Jie; Zhang Cong; [Abstract] The invention discloses a passive LC resonant sensor wireless read-out circuit, including a microcontroller control module, DDS sweep signal generation module, RF bridge detection module, the buffer amplifier module and the keys And the display module, wherein the four arms of the RF bridge are respectively composed of three 50-ohm precision resistors and a readout coil, and the readout coil and the passive LC sensor form a loosely coupled transformer. The wireless readout circuit of the present invention has a simple structure and is easy to implement,