摘要
利用数字示波器的程控功能远程读取了无源核子料位计探头的脉冲信号,并设计了相应的低通滤波器滤除了峰值附近的高频噪声。通过大量采集脉冲信号并对幅值进行分组,绘制了不同高压偏置电压下脉冲信号的幅度谱,得出了高电压对幅度谱的影响规律。脉冲信号幅度谱的绘制及其变化规律为后级信号处理电路及计算模型的设计提供了重要的理论依据。
The pulse signal of the passive nucleon level meter probe was read remotely using the programmed function of the digital oscilloscope,and the corresponding low-pass filter was designed to filter out the high-frequency noise near the peak.The amplitude spectrum of the pulse signal under different high voltage bias voltages was plotted by mass acquisition of the pulse signal and grouping the amplitude values,and the effect law of high voltage on the amplitude spectrum was derived.The plotting of the pulse signal amplitude spectrum and its variation law provide an important theoretical basis for the design of the post-stage signal processing circuit and the calculation model.
作者
宋荣志
Song Rongzhi(Jiangsu Vocational College of Information Technology)
出处
《上海计量测试》
2022年第6期26-28,共3页
Shanghai Measurement and Testing
关键词
无源核子料位计
脉冲信号
低通滤波
幅度谱
passive nucleon level meter
pulse signal
low-pass filtering
amplitude spectrum
