电阻应变片直流电桥测量电路的研究  

Research on Resistance Strain Gage Direct Current Bridge Measure Circuit

作　　者：陈海燕[1] 王书杰[1] 

机构地区：[1]泰州职业技术学院电子工程系,江苏泰州225300

出　　处：《泰州职业技术学院学报》2005年第4期23-24,58,共3页Journal of Taizhou Polytechnic College

摘　　要：传感器测量电路通常采用电桥电路,电阻应变片是测量微小应变的常用传感元件。论述电阻应变片直流电桥测量电路的工作原理,介绍可变增益放大器AD8221在应变测量中的应用,并对其提高共模抑制比以及对ESD的防护措施进行阐述。Measuring circuits for sensors are commonly bridge circuit. Resistance strain gage is a sensor for measuring small strain strength. This article talks about the working principle of resistance strain gage direct current bridge measure circuit. It gives a description about how the variable gain amplifier AD8221 improves CMRR in strain measurement and the ESD protecting measure.

关 键 词：应变片 直流电桥 共模抑制比 

分 类 号：TM54[电气工程—电器]