This product is a full electron construction in which its front - end adopts pressure sensor with baffle filled oil chip . output signal is sent the data to microprocessor from high - precision , low temperature drift and high - reliability amplification circuit and a d convert circuit , after operating , to transform by high - precision d a convert circuit into standard signal output 该产品为全电子结构，前端采用带隔离膜充油芯体的压力传感器，输出信号由高精度低温漂和高可靠性的放大电路和模数转换电路将数据送入微处理器，经运算后由高精度数模转换电路变换为标准信号输出。
Then , the optical system and mechnical configuration of the interferometer are realized , which are based on phase detection algorithms and four - step algorithm . in the following work , we designed and realized a dc high voltage amplification circuit by mcu , which is used to driver pzt , and presented a new method to measure the nonlinearity of pzt 设计并完成了精密移相的单片机控制用于压电晶体驱动的高压放大电路，并且提出了一种新颖的对工作状态下压电晶体非线性软件校正的新方法，并得到了很好的实验结果。
