前置电路 meaning in English
front end circuit
Examples
- When signal - conditioning circuit is in consideration , attention is paid to design safeguard circuit and magnify circuit . a proper parameter data acquisition card is selected according to the signal - conditioning circuit
在硬件电路的实现上，合理设计了保护电路和前置放大电路；结合前置电路选择了参数合适的数据采集卡。 - The input signals pass through the prepositive circuit which transforming the measured signals ( voltage or current ) into small voltage signals , the signal adjust circuit consist of programmable - gain amplifier and filter , and digital signal processor tms320lf2407 for data acquisition and processing in turns . provide the measuring results on lcd module . and also can transfer data to the pc ’ s rs232 for farther analyse
采用前置电路将被测信号(电压或电流)变换为小电压信号，经过信号调理电路对信号进行程控放大和滤波后，通过tms320lf2407实现信号的数据采集、信息处理和计算，将测量结果通过液晶模块显示，还可经过rs232接口与计算机进行数据传输，做进一步的分析和应用。 - The measuring instrument for blade resonant frequency mainly consists of a front end circuit , a signal collecting circuit , and a coiilputing and displaying circuit . this paper provides a detailed hardware diagran , software flow chart and design process , expounds the operation and calibration of the instrument , and analyses the measuring data in detail according to different conditions
叶片共振频率测试仪主要由前置电路，信号采集电路及运算和显示电路组成，文中给出了详细的硬件电路图、软件流程图及设计过程，阐述了该仪器的使用和校验方法，并针对不同的状况对测量数据进行详细的分析。