And the paper studies and works out monitoring software in the whole system, including A/D acquisition and control, data exchange, DCI driver and digital signal filtering and data preprocess software.
并研究编制了整个系统的监控软件，包括A/D 采集和控制、数据通讯、显控等部分接口驱动程序以及数字信号滤波数据预处理软件；
Reflected wave signal is processed by double channels two-order low-pass active filtering in hardware, and indicator diagram signal is processed by digital filtering in software.
液面反射波信号主要在硬件方面采用双通道二阶有源低通滤波，功图信号则在软件方面采用数字滤波算法。
In measurement system software, the high-order FIR digital filter technology designed by using window functions method is used for filtering sample values.
测量系统的软件采用窗函数法设计的高阶FIR数字滤波技术对采样值进行滤波处理。
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