Ultra-Low-Power Signal Processing Circuit for Magnetoelectric Sensor in Grid Network Topology Analysis

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Letters Pub Date : 2025-09-08 DOI:10.1109/LSENS.2025.3606972

Fangqing Mu;Ping Li;Guoda Wang;Yumei Wen

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Abstract

This letter proposes an ultra-low-power grid signal analog processor (UGSP) for magnetoelectric sensor systems. It is designed in accordance with the principle of a lock-in amplifier (LIA) and employs an intermittent operation mode by dynamically controlling the duty cycle of the enable signal. As a portable sensor interface platform, it achieves low-power, high signal-to-noise ratio (SNR) signal detection in wireless sensor networks (WSN) for grid network topology analysis. For validation, the UGSP chip is fabricated with a compact size of 15 × 15 × 4 mm³. Its power consumption is only 35 µW at a 3.3 V supply, and is significantly lower than that of conventional AD630-based LIA (600 mW). It has an SNR improvement of 55 dB. The utilization of this UGSP considerably prolongs the operational lifespan of the battery-powered detection circuitry on the WSN node. It is also applicable to other sensor technologies requiring low consumption and high sensitivity, self-powered monitoring systems in smart grids, early warning of power system faults, real-time diagnostics, and other related applications.

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网格网络拓扑分析中磁电传感器超低功耗信号处理电路

本文提出了一种用于磁电传感器系统的超低功耗电网信号模拟处理器（UGSP）。它是根据锁相放大器（LIA）的原理设计的，通过动态控制使能信号的占空比，采用间歇工作模式。作为便携式传感器接口平台，它实现了无线传感器网络（WSN）中低功耗、高信噪比（SNR）的信号检测，用于网格网络拓扑分析。为了验证，UGSP芯片的尺寸为15 × 15 × 4 mm3。在3.3 V电源下，其功耗仅为35 μ W，明显低于传统的基于ad630的LIA （600 mW）。信噪比提高了55 dB。这种UGSP的使用大大延长了WSN节点上电池供电的检测电路的使用寿命。适用于其他低功耗、高灵敏度的传感器技术、智能电网自供电监控系统、电力系统故障预警、实时诊断等相关应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Sensors Letters Engineering-Electrical and Electronic Engineering

CiteScore

3.50

自引率

7.10%

发文量

194