摘要
针对现有的差动电阻式传感器不容易获得高精度测量结果的现实情况,提供了一种新型测量方法,通过引入一对镜像电流源,在原理上直接实现了电阻直流分量和交变分量的有效分离,信号处理时可以实现仅对交变分量的提取和放大,因此可以获得非常理想的测量灵敏度和测量精度。
In view of the great difficulty of obtaining high accuracy measuring results for unbonded elastic wire resistance meters, a new method is presented in this paper, which introduces a mirror current source circuit to complete separation between DC component and alternating component of the resistors. By this new method the alternating component of resistor can be pick up as the only signal for amplification in the signal processing and ideal measuring sensitivity and precision can be reached.
出处
《传感器世界》
2014年第4期16-20,共5页
Sensor World
关键词
差动电阻式传感器
安全监测仪器
数据采集
测量技术
unbonded elastic wire resistance meter
safetymonitoring instrument
data acquisition
measurementtechnology
