中圖分類號： U491.1+16
文獻標識碼： A
DOI：10.16157/j.issn.0258-7998.212170
中文引用格式： 周亞，戴偉，張鑫，等. 基于地感線圈的車輛駛?cè)霗z測電路設(shè)計及仿真[J].電子技術(shù)應(yīng)用，2022，48(6)：107-111.
英文引用格式： Zhou Ya，Dai Wei，Zhang Xin，et al. Design and simulation of vehicle entry detection circuit based on ground induction coil[J]. Application of Electronic Technique，2022，48(6)：107-111.

Design and simulation of vehicle entry detection circuit based on ground induction coil

Abstract： In the field of traffic Internet of Things, there is a business demand for road traffic flow information monitoring. The ground sensing coil is arranged on the road to sense the information of vehicles entering and provide initial data for the traffic Internet of Things. According to the working scene of ground induction coil, the working principle of ground induction coil is described. On this basis, a circuit of vehicle entry detection signal based on ground induction coil is designed. The signal acquisition circuit is mainly composed of tuning oscillation circuit, waveform shaping circuit and microprocessor. The design points of each module are introduced. PSpice software simulation shows that the circuit can effectively collect the state value change of ground sensing coil, so as to detect vehicle entry. It has high practical value and application prospect in the field of traffic Internet of Things.

Key words : ground induction coil；entry detection；circuit design；PSpice simulation