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基于噪声水平的感应式磁传感器最优化设计
- 作者：
- 杜政|陈兴朋|席振铢|唐尧
- 作者单位：
- 中南大学教育部有色金属成矿预测重点实验室&中南大学地球科学与信息物理学院|湖南省五维地质科技有限公司|中南大学教育部有色金属成矿预测重点实验室&中南大学地球科学与信息物理学院|中南大学教育部有色金属成矿预测重点实验室&中南大学地球科学与信息物理学院
基金项目：
- 国际海域资源调查与开发“十三五”项目（DY135-S1-1-07）
详细信息：
- 作者简介：
- 杜政（1997—），男，甘肃庆阳人，硕士研究生，研究方向为地球物理仪器研发；长沙市岳麓区潇湘中路,中南大学地球科学与信息物理学院，410083;E-mail:962508006@qq.com
- 通讯作者：
- isnull
- PDF下载
Optimal design of inductive magnetic sensors based on noise level
- English Author：
- Key Laboratory of Non-ferrous Metals Metallogenesis Prediction,Central South University,Ministry of Education&School of Geosciences and Info-physics,Central South University|Hunan Wuwei Geological Technology Co.,Ltd.|Key Laboratory of Non-ferrous Metals Metallogenesis Prediction,Central South University,Ministry of Education&School of Geosciences and Info-physics,Central South University|Key Laboratory of Non-ferrous Metals Metallogenesis Prediction,Central South University,Ministry of Education&School of Geosciences and Info-physics,Central South University
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
感应式磁传感器是地球物理勘探中最常用仪器之一，噪声水平是感应式磁传感器的核心技术指标。长期以来，感应式磁传感器的设计人员饱受其研发周期长、设计效率低的困扰，需要优化设计方法来缩短周期，提高效率。首先理论分析感应式磁传感器噪声在不同频段的分布规律，给定感应式磁传感器的设计要求后，构建噪声和磁芯长径比、磁导率的函数关系，得到满足设计要求的最优磁芯质量；随后定义一个质量因子，构建噪声与质量因子的函数关系，计算线圈质量，进而得到绕线的最佳直径，并在感应式磁传感器绕组比确定的情况下，计算得到线圈匝数；最后利用上述方法设计并制作1个1~100 000 Hz感应式磁传感器，测得其噪声水平在频率范围内均满足设计要求，证明此最优化设计的合理性。
关键词:
感应式磁传感器；噪声水平；最优化设计；质量因子；实物测量
Abstract:
Magnetotelluric inductive magnetic sensors are one of the most common instrument used in geophysical exploration.Noise level is the core technical index of magnetoteluric inductive magnetic sensors.The designers of inductive magnetic sensors have been long bothered by its long development period and low design efficiency.So it is necessary to optimize the design method to shorten the period and improve efficiency.First of all,the paper theoretically analyzed the noise distribution rules of inductive magnetic sensors in different frequency.Given design requirements of the inductive magnetic sensors,the paper constructed the function between of noise,ratio of magnetic core length and diameter and magnetic conduction rate,and obtained the optimal magnetic core mass that met the design requirement; then,a mass factor was defined in order to construct the function between noise and mass factor.By calculation of the coil mass,the optimal diameter of the wire was obtained.At the same time,with the defined coil ratio of inductive magnetic sensors,the paper by calculation determined the coil turns;finally a 1-100 000 Hz inductive magnetic sensor was designed and prepared with the above methods that were tested.The results show that its noise level in the frequency range meets the design requirement,indicating the reasonability of this optimal design.
Keywords:
inductive magnetic sensor;noise level;optimal design;mass factor;actual measurement
