摘要
根据交流电磁场检测(简称ACFM)的信号特征,设计了一种用于ACFM检测系统的信号调理电路。该电路由低噪声的程控放大、自适应带通滤波、后级可调放大和真有效值转换四部分组成。经试验验证,该信号调理电路适用范围宽、检测精度高、可获得理想的检测信号特征曲线,且工作稳定可靠,可用于高性价比的ACFM检测仪器中。
According to the signal characteristics of the alternating current field measurement（ ACFM）, a kind of signal conditioning circuit was designed, for ACFM inspection system. This circuit was composed of four parts ： programmed by the low noise amplifier, adaptive band-pass filter, adjustable amplifier and true RMS. After experimental verification, this circuit can be used cost- effective ACFM testing instruments for its advantages ： a wide range of usage, high precision and obtain the ideal characteristic curve of the detection signal, stability and reliabivity.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第1期74-78,共5页
Instrument Technique and Sensor
基金
国家自然科学基金资助项目(51065024)
关键词
交流电磁场检测
信号调理电路
特征曲线
alternating current field measurement
signal conditioning circuit
characteristic curve
