| 基于巨磁阻传感器的电源逆变器过流保护电路设计 |
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| 引用本文： | 廖萍,孔翠香,杨建平.基于巨磁阻传感器的电源逆变器过流保护电路设计[J].井冈山大学学报（自然科学版）,2018(2):40-43. |
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| 作者姓名： | 廖萍 孔翠香 杨建平 |
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| 作者单位： | 井冈山大学电子与信息工程学院 |
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| 基金项目： | 吉安市科技支撑项目（吉市科计字[2014]36号5） |
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| 摘 要： | 针对电源逆变器中的过流保护问题,设计了由巨磁阻传感器组成的电源逆变器过流保护电路系统,该系统采用巨磁阻传感器实时采集电源电流,巨磁阻传感器根据电磁感应原理,将交变电流转换为相应的电压信号。通过监控电路实现电压信号的放大和处理,DSP和开关控制电路用来实现电路的开通与关断。实验结果表明该电路可以实现过流保护功能,并且可靠性好、灵敏度高。
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| 关 键 词： | 巨磁阻传感器 过流保护 逆变器 开关电源 DSP |
| 收稿时间： | 2017/10/9 0:00:00 |
| 修稿时间： | 2018/1/30 0:00:00 |
DESIGN OF POWER INTERVER OVER-CURRENT PROTECTION CIRCUIT BASED ON GIANT MAGNETORESISTANCE SENSOR |
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| LIAO Ping,KONG Cui-xiang and YANG Jian-ping.DESIGN OF POWER INTERVER OVER-CURRENT PROTECTION CIRCUIT BASED ON GIANT MAGNETORESISTANCE SENSOR[J].Journal of Jinggangshan University(Natural Sciences Edition),2018(2):40-43. |
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| Authors: | LIAO Ping KONG Cui-xiang and YANG Jian-ping |
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| Institution: | School of Electronics and Information Engineering, Jinggangshan University, Ji''an, Jiangxi 343009, Chin,School of Electronics and Information Engineering, Jinggangshan University, Ji''an, Jiangxi 343009, Chin and School of Electronics and Information Engineering, Jinggangshan University, Ji''an, Jiangxi 343009, Chin |
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| Abstract: | Aiming at the over-current protection circuit problem in the power supply inverter, this paper designs a power supply inverter over current protection circuit system composed of giant magneto resistive sensor, which uses giant magneto resistive sensor to collect the power current in real time, and the giant magneto resistive sensor converts the alternating current to the response voltage signal according to the electromagnetic induction principle. Through the monitoring circuit to realize the amplification and processing of voltage signal, DSP and switch control circuit is used to realize the opening and closing of the circuit. The experimental results show that the circuit can realize the over-current protection function, and has good reliability and high sensitivity. |
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| Keywords: | giant magneto resistance sensor over-current protection interver switching power supply DSP |
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