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在研制大坝监测测控仪器中，为了有效滤除在大坝监测信号中的干扰信号，设计了一种适用于单片机软件实现的双窄带陷波数字滤波器；采用８０３２单片机汇编语言，提出了环形缓冲区结构和相对位置指针方法，大大减少了运算时间，提高了运行速度，有效滤除了大坝监测信号中的零点漂移和工频干扰。
In the development of dam monitoring and control instruments, in order to effectively filter out the interference signals in dam monitoring signals, a double narrowband notch digital filter suitable for single chip microcomputer software was designed. Using the 8032 singlechip assembly language, a ring Buffer structure and relative position pointer method, greatly reducing the computing time and improve the speed of operation, effectively filter out the dam monitoring signal zero drift and frequency interference.