高精度電流傳感器溫度補償方法的研究

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中圖分類號：TN929.52-34 文獻標(biāo)識碼：A 文章編號：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

霍爾電流傳感器是基于霍爾效應(yīng)進行電流檢測的一種傳感器，其中的霍爾元件屬于一種半導(dǎo)體器件，其靈敏度會隨著溫度的變化而產(chǎn)生漂移，影響霍爾電流傳感器的電流檢測精度及溫度穩(wěn)定性[1-3]。（剩余6956字）