光学精密工程2016，Vol.24Issue(11)：2783-2791,9.DOI:10.3788/OPE.20162411.2783
偏置磁场对磁致伸缩液位传感器检测电压的影响
Influence of bias magnetic field on detection voltage of magnetostrictive liquid level sensor
摘要
Abstract
To improve the detection accuracy of a magnetostrictive liquid level sensor , different placements of float magnets in the bias magnetic fields of the sensor and its impact on the detection voltage were researched .The bias magnetic fields generated by float magnets in different placements were analyzed by the finite element analysis of ANSYS software .It was found that when three pieces of magnets under NNS placement or one single ring magnet are chosen as bias magnetic field ,the detection voltage waveform is in line with expectations .Besides ,the effects of bias magnetic field of magnetostrictive liquid level sensor were done on detection voltage were experimentally studied and the experiments were done more times for the float magnets at different placements .The experiment results verify that when the bias magnetic field is generated by three pieces of magnets under NNS placement or one single ring magnet ,the amplitude of detection voltage reaches 50 mV ,which has improved almost 30 mV as compared with that of other ways .It suggests that three pieces of magnets under NNS placement or one single ring magnet can be applied as the bias magnetic field of magnetostrictive liquid level sensors .关键词
偏置磁场/磁致伸缩液位传感器/检测电压/有限元法Key words
bias magnetic field/magnetostrictive liquid level sensor/detection voltage/finite element method分类
信息技术与安全科学引用本文复制引用
孙英,边天元,王硕,翁玲,张露予..偏置磁场对磁致伸缩液位传感器检测电压的影响[J].光学精密工程,2016,24(11):2783-2791,9.基金项目
国家自然科学基金资助项目（No ．51201055）；河北省高等学校科学技术研究重点资助项目（No ． ZD2015085）；天津市高等学校科技发展基金资助项目（No ．20140421）；河北省引进留学人员资助项目 （）
