10 mA Precision Contactless Current Sensing Using Low-Cost Hall-Effect Devices

被引：0

作者：

Medrano, Nicolas ^{[1
]}

Antolin, Diego ^{[1
]}

Calvo, Belen ^{[1
]}

Eneriz, Daniel ^{[1
]}

机构：

[1] Univ Zaragoza, Engn Res Inst Aragon I3A, Grp Elect Design, Zaragoza, Spain

来源：

PROCEEDINGS OF THE 37TH CONFERENCE ON DESIGN OF CIRCUITS AND INTEGRATED SYSTEMS (DCIS 2022) | 2022年

关键词：

Hall sensors; contactless current measurement; current probe; reconfigurable sensor conditioning;

D O I：

10.1109/DCIS55711.2022.9970200

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The measurement of the magnetic field generated by a current flowing in a wire allows the contactless estimation of its value. This non-invasive measurement technique can be applied to occasional monitoring of energy consumption in electrical and electronic systems. In this paper, based on low-cost linear Hall-effect sensors, a basic circuit for AC and DC current sensing is presented targeting current ranges of home and automotive applications. With an accuracy of 10 mA, the probe prototype consists of a differential configuration with programmable gain, so that the output voltage can be dynamically set to cover the input range of an analog-to-digital converter.

引用

页码：48 / 52

页数：5

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