高精度电流传感器温度补偿方法的研究

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中图分类号：TN929.52-34 文献标识码：A 文章编号：1004-373X（2025）16-0001-06

Research on temperature compensation method of high precision current sensor

WU Xu1，2 ，HUANG Haihong1，DOU Sheng²，WANG Linsen²，PENG Lan1 （1.School of Electrical Engineering，Hefei Universityof Technology，Hefei23ooo9，China; 2.InstituteofPlasmaPhysics，HefeiInstitutesofPhysicalScience，ChineseAcademyofSciences，Hefei3o31，China）

Abstract：The magneticfieldsensing element used in Hallcurentsensors isasemiconductordevice，and theresistivity， mobility，andcarierconcentrationofsemiconductormaterialsaretemperature-dependent.Ileadstovariationsinparameters suchasHallvoltage，sensitivitycoefiient，ndinteralresistancewithtemperature，therebyaffctingthemeasurementauracy ofthesensor.Inordertosolvethisproblem，theparaleltemperaturecompensationmethodisusedtofullycompensatethelow ordertermsoftemperaturechanges，butintroduceerorsintheigordertermsoftemperaturechanges，hichisaincomplete compensationandnot suitableforworkingenvironmentswithlargetemperaturechanges.Basedontheabovecompensation method，afeedback temperaturecompensationapproachisproposed，whichmultipliesthecompensatedoutputvoltagewiththe temperaturecompensationoutputsignal，andthensumstheproductwiththeoutputsignaloftheHalllementtofurtheriprove thetemperatuecharacteristicsoftheHallelementandenhancetheadaptabilityof theHallcurrntsensortotheenvironmnt. Thesimulationandexperimentalresultsshowthatthefeedback temperaturecompensationmethodcaneliminatetheimpactof temperaturevariationsonHall elementparameters，therebyimproving themeasurementacuracyoftheHallcurrentsensorand controlling the sensor's accuracy within 0.4%

Keywords：Hall curentsensor;；Hall element;；parallel temperature compensation method;feedback temperature compensation method; measurement accuracy; complete compensation; summation circuit

0 引言

霍尔电流传感器是基于霍尔效应进行电流检测的一种传感器，其中的霍尔元件属于一种半导体器件，其灵敏度会随着温度的变化而产生漂移，影响霍尔电流传感器的电流检测精度及温度稳定性[1-3]。（剩余6956字）