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依据电涡流式探测原理，建立了金属探测的数学模型，为锚杆探测仪参数的选择提供了理论依据。锚杆探测仪采用单片机测量振荡器的振幅和频率，控制振荡器振幅和发光二极管的指示。实现了仪器的智能化，解决了锚杆和金属网的分辨问题。
According to the theory of eddy current detection, the mathematical model of metal detection is established, which provides a theoretical basis for the selection of the parameters of the bolt detector. Rocker probe using single-chip oscillator amplitude and frequency measurement, control oscillator amplitude and light-emitting diode instructions. To achieve the intelligence of the instrument, to solve the bolt and metal mesh resolution problems.