Current sensor based on an atomic magnetometer for DC application

Guozhu Li; Qing Xin; Xuxing Geng; Zhi Liang; Shangqing Liang; Guangming Huang; Gaoxiang Li; Guoqing Yang

doi:doi:10.3788/COL202018.031202

Chinese Optics Letters, 2020, 18 (3): 031202, Published Online: Feb. 24, 2020

Current sensor based on an atomic magnetometer for DC application Download： 797次

Guozhu Li ¹Qing Xin ^1,*Xuxing Geng ²Zhi Liang ²Shangqing Liang ¹Guangming Huang ²Gaoxiang Li ²Guoqing Yang ^1,**

Author Affiliations

¹ College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China

² College of Physics, Huazhong Normal University, Wuhan 430079, China

Figures & Tables

Fig. 1. Schematic diagram of the proposed current sensor. I: current to be measured; PD: photodiode; PI: proportional-integral; DDS: direct digital synthesis; RF: radio frequency; I/f: Larmor frequency to I data converter.

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Fig. 2. Distribution of the magnetic field in the solenoid, which is simulated with ANSYS. The current is 1 A.

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Fig. 3. Measured magnetic field (square) and calculated current (dot) versus actual current.

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Guozhu Li, Qing Xin, Xuxing Geng, Zhi Liang, Shangqing Liang, Guangming Huang, Gaoxiang Li, Guoqing Yang. Current sensor based on an atomic magnetometer for DC application[J]. Chinese Optics Letters, 2020, 18(3): 031202.

Current sensor based on an atomic magnetometer for DC application Download： 797次

Fig. 1. Schematic diagram of the proposed current sensor. I: current to be measured; PD: photodiode; PI: proportional-integral; DDS: direct digital synthesis; RF: radio frequency; I/f: Larmor frequency to I data converter.

Fig. 2. Distribution of the magnetic field in the solenoid, which is simulated with ANSYS. The current is 1 A.

Fig. 3. Measured magnetic field (square) and calculated current (dot) versus actual current.

Fig. 4. Absolute error versus actual current.

Fig. 5. Relative error versus actual current.

Fig. 6. Allan variance of the current sensor data.

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Current sensor based on an atomic magnetometer for DC application Download： 797次

Fig. 1. Schematic diagram of the proposed current sensor. I: current to be measured; PD: photodiode; PI: proportional-integral; DDS: direct digital synthesis; RF: radio frequency; I/f: Larmor frequency to I data converter.

Fig. 2. Distribution of the magnetic field in the solenoid, which is simulated with ANSYS. The current is 1 A.

Fig. 3. Measured magnetic field (square) and calculated current (dot) versus actual current.

Fig. 4. Absolute error versus actual current.

Fig. 5. Relative error versus actual current.

Fig. 6. Allan variance of the current sensor data.

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