發(fā)布時(shí)間：2018-05-20 22:09

  本文選題：霍爾傳感器 + 溫度漂移��； 參考：《強(qiáng)激光與粒子束》2017年04期

【摘要】：霍爾傳感器作為一種半導(dǎo)體器件,其靈敏度隨著溫度變化而產(chǎn)生漂移的特性,限制了其在高精度磁場測量場合的應(yīng)用。傳統(tǒng)的溫度補(bǔ)償方法雖然對溫度變化的一次項(xiàng)進(jìn)行了完全補(bǔ)償,但是卻引入了溫度變化二次項(xiàng)的誤差。因此,對于溫度變化顯著的高精度測量場合,傳統(tǒng)溫度補(bǔ)償法將不再適用。設(shè)計(jì)了一種閉環(huán)反饋電路,通過溫度傳感器采集溫度信號(hào),與信號(hào)處理電路的最終輸出信號(hào)進(jìn)行運(yùn)算后送回信號(hào)處理電路的輸入端進(jìn)行補(bǔ)償,而并不是簡單地將溫度信號(hào)與霍爾信號(hào)的輸入信號(hào)進(jìn)行相加后送入信號(hào)處理電路。仿真分析結(jié)果表明,通過調(diào)節(jié)補(bǔ)償電路的反饋比例系數(shù)與霍爾芯片溫度漂移系數(shù),可以完全補(bǔ)償霍爾芯片的靈敏度漂移。因此,這種閉環(huán)補(bǔ)償方法可以不引入與溫度變化二次項(xiàng)有關(guān)的誤差,消除因溫度變化產(chǎn)生的漂移,不僅適用于霍爾傳感器,也適用于其他會(huì)隨著溫度漂移的傳感器。
[Abstract]:Hall sensor is a kind of semiconductor device, its sensitivity drift with temperature change, which limits its application in high precision magnetic field measurement. Although the traditional temperature compensation method completely compensates the first term of the temperature change, the error of the quadratic term of the temperature change is introduced. Therefore, the traditional temperature compensation method is no longer suitable for high precision measurement where the temperature change is significant. A closed-loop feedback circuit is designed. Temperature signals are collected by temperature sensor, and the final output signal of the signal processing circuit is calculated and sent back to the input end of the signal processing circuit for compensation. The temperature signal is not simply added to the input signal of Hall signal and then sent to the signal processing circuit. The simulation results show that the sensitivity drift of Hall chip can be completely compensated by adjusting the feedback ratio coefficient of compensation circuit and the temperature drift coefficient of Hall chip. Therefore, the closed-loop compensation method can eliminate the drift caused by the temperature change without introducing the error related to the quadratic term of temperature change, which is suitable not only for Hall sensor, but also for other sensors that drift with temperature.
【作者單位】： 中國科學(xué)院等離子體物理研究所;中國科學(xué)技術(shù)大學(xué)研究生院科學(xué)島分院;
【基金】：國際熱核聚變實(shí)驗(yàn)堆(ITER)計(jì)劃專項(xiàng)(2011GB114000)
【分類號(hào)】：TP212

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【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐冬;李鳳玲;張寧;李寶生;;基于霍爾開關(guān)的磁性浮子式液位傳感器設(shè)計(jì)[J];傳感器與微系統(tǒng);2017年07期

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本文編號(hào)：1916436