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基于磁通門傳感器的高精度地磁檢測(cè)儀

  • 資源大小:806 K
  • 上傳時(shí)間: 2023-09-14
  • 上傳用戶:1208020161
  • 資源積分:2 下載積分
  • 標(biāo)      簽: 傳感器 地磁檢測(cè)儀

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磁通門傳感器具有分辨率高,測(cè)量弱磁場(chǎng)范圍寬,體積小、重量輕、功耗低,經(jīng)濟(jì)性好,能夠直接測(cè)量磁場(chǎng)的矢量和適于在高速運(yùn)動(dòng)系統(tǒng)中使用等特點(diǎn),被廣泛應(yīng)用于各種領(lǐng)域。本文分析了磁通門傳感器的工作原理,詳細(xì)論述了如何采用數(shù)字檢波的方法進(jìn)行信號(hào)處理.闡述了地磁檢測(cè)儀硬件電路的設(shè)計(jì)。檢測(cè)裝置主要由磁通門傳感器、單片機(jī)最小系統(tǒng)、A/D數(shù)據(jù)采集電路和串口電路構(gòu)成。磁通門傳感器檢測(cè)到磁場(chǎng)的矢量大小,輸出信號(hào)經(jīng)過有源濾波器和放大器處理后得到三路幅度與磁場(chǎng)各分量大小成正比的正弦信號(hào)。A/D同時(shí)對(duì)三路信號(hào)進(jìn)行4倍頻采樣,將兩個(gè)周期的采樣數(shù)據(jù)傳送到單片機(jī),然后單片機(jī)通過串行端口將數(shù)據(jù)發(fā)送到計(jì)算機(jī),最后由計(jì)算機(jī)完成數(shù)據(jù)的處理和分析。

Fluxgate sensor with high resolution,wide range of weak magnetic field measurement,small size,light weight,low power consumption,good economy,can directly measure the magnetic field vector and suitable for use in high-speed motion system,etc.,is widely used in various fields.This paper analyzes the working principle of fluxgate sensor,discusses in detail how to use digital detection method for signal processing,and expounds the design of hardware circuit of geomagnetic detector.The detection device is mainly composed of fluxgate sensor,MCU minimum system,A/D data acquisition circuit and serial port circuit.The flux gate sensor detects the magnitude of the magnetic field vector,and the output signal is processed by an active filter and an amplifier to obtain a sinusoidal signal whose amplitude is proportional to each component of the magnetic field.A/D simultaneously carries out 4-fold frequency sampling on the three-channel signal,and sends the sampled data of two cycles to the single-chip microcomputer,which then sends the data to the computer through the serial port,and finally completes the data processing and analysis by the computer.

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