传感器现场校准系统的硬件实现方案

Study on Hardware Implementation Strategy of Field Calibration System of Transducers

介绍利用实时数字信号处理芯片DSP对传感器进行现场校准的方案。该方案是用把DSP内核及芯片级外设集成到一个芯片上的FMS3 2 0C2 40X系列芯片取代传统的微控制器等器件 ,具有体积小、可装于传感器电路中并能贮存线性化校准所需的指令及数据的优点。该方案已应用于电涡流式位移传感器的现场校正 ,效果良好。

The strategy of field calibration for transducers by using DSP,the real time digital signal processing chip,is introduced.The strategy integrated the inner kernel and chip based peripheral of DSP into TMS320C240X series chip and replaced traditional device of micro controller.The chip features small size and can be installed into transducer circuit and stored necessary instructions and data for linearization calibration.The strategy has been adopted in field calibration for electric eddy transducers with good result.