PVDF压电传感器信号调理电路的设计  

Design of a signal conditioner circuit for the PVDF piezoelectric transducer

作　　者：王庆锋[1] 吴斌[1] 宋吟蔚[1] 何存富[1] 

机构地区：[1]北京工业大学机电学院,北京100022

出　　处：《仪器仪表学报》2006年第z2期1653-1655,共3页Chinese Journal of Scientific Instrument

摘　　要：设计PVDF压电传感器信号调理电路,详细介绍前置放大、工频陷波和低通滤波电路的设计原理。利用数字示波器对PVDF压电传感器信号调理电路进行测定。试验结果表明:设计的信号调理电路工作稳定可靠、重复性好、噪声小,抗干扰能力强,工频及工频倍频陷波效果明显,信号处理实时、准确,PVDF压电传感器能够用于工业现场信号检测。The design of a signal conditioner circuit for the PVDF transducer is described detailedly in this paper, including the design principle of preamplifier circuit, line-frequency notch filter, low-pass filter. The corresponding simulations and experiments show that the circuit has the function of real time processing well and truly; it is reliable and can minimize the effect of electromagnetic interference; and the circuit can effectively trap line-frequency and line-frequency multiplicatioa Therefore it can be applied to detect signal on-site for PVDF transducer.

关 键 词：信号调理 前置放大器 工频陷波器 

分 类 号：TH7-55[机械工程—仪器科学与技术]