電子發燒友網>電子資料下載>可編程邏輯>FPGA/ASIC>基于單片機和FPGA的位移測量裝置的設計

基于單片機和FPGA的位移測量裝置的設計

2512880 2010-11-25 | rar | 980 | 次下載 | 5積分

資料介紹

基于電感式傳感器測量磁芯位移的原理，以單片機和FPGA為控制中心，由DDS產生的正弦信號經差分放大，并經過差動變壓器的差分耦合，對兩路輸出信號放大整流后，采集數據，對所得的數據進行處理，實現了磁芯位移的精確測量。本裝置可測量的位移范圍為-20~20 mm，絕對誤差不大于0.5 mm，C點的波形無失真，A、B點輸出的直流波形無波動，滿足測量范圍從-10 ~10 mm，絕對誤差不大于2 mm，并且采用直流電機驅動磁棒移動，控制磁棒達到設定位移，位移絕對誤差不大于0.5 mm。采用液晶顯示和按鍵，實現了人機交互。此外還采取各種抗干擾措施，來提高系統工作的穩定性。

Abstract:: Based on the principle of inductive sensors measure magnetic core displacement， using SCM and FPGA as control core, the sinusoidal signal generated by the DDS is amplified， differential coupling the signal through the differential transformer， the two rectified output signals are amplified， then data is collected and processed， achieving accurate measurement of magnetic core displacement. This device measures the displacement range which is from -20mm to 20mm， measurement error is not more than 0.5mm， the waveform of C point without distortion， the DC waveform of A and B point without fluctuation， and use DC motor to drive magnetic bar move， control the magnetic bar to set the displacement， displacement measurement error is not more than 0.5mm. It uses liquid crystal display and keypad to achieve the human-computer interaction. In addition， the system takes various anti-jamming measures to improve the operation of the system stability