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| 一种新的弱磁场检测方法研究 | |
| 引用本文： | 卢志才,米东,徐章遂,孙永谨,耿杰恒.一种新的弱磁场检测方法研究[J].仪表技术,2010(9):6-7,31. |
| 作者姓名： | 卢志才 米东 徐章遂 孙永谨 耿杰恒 |
| 作者单位： | 1. 军械工程学院电气工程系,河北石家庄,050003 2. 中国人民解放军63981部队,湖北武汉,430311 3. 中国人民解放军63892部队,河南洛阳,471003 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 介绍一种新的弱磁场测量方法,利用巨磁阻传感器,测量较为微弱的磁场信号,采用恒流供电,优化了传感器的供电模式,改善了传感器在弱磁场范围内的线性特性。设计低噪声、低失真的放大电路对传感器输出的信号进行放大,采用调零电路改变放大电路的输出来抵消外界静磁场的干扰。 |
| 关 键 词： | 巨磁阻传感器 恒流源 放大调零电路 |
Research of a New Micro-magnetic Measurement Method |
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| LU Zhi-cai,MI Dong,XU Zhang-sui,SUN Yong-jin,GENG Jie-heng.Research of a New Micro-magnetic Measurement Method[J].Instrumentation Technology,2010(9):6-7,31. | |
| Authors: | LU Zhi-cai MI Dong XU Zhang-sui SUN Yong-jin GENG Jie-heng |
| Affiliation: | LU Zhi-cai1,MI Dong1,XU Zhang-sui1,SUN Yong-jin2,GENG Jie-heng3 (1.Department of Electrical Engineering,Ordnance Engineering College,Shijiazhuang 050003,China,2.Unit 63981,PLA,Wuhan 430311,3.Unit 63892,Luoyang 471003,China) |
| Abstract: | A newly micro-magnetic field measurement method is introduced in this paper.GMR sensor is used as the system sensing equipment in order to measure the magnetic field.The sensor power supply model is optimized by constant current source.And the linearity output character of the sensor is improved.The low-noise and low-anamorphic amplifier is designed for the sensor differential output.The static magnetic field noise is counteracted by the zero circuit. |
| Keywords: | GMR constant current source amplifier and zero circuit |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |