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| Development and Calibration of an Impulse Magnetic Field Measurement System |
| REN Xiaoming1,2,FU Zhengcai1,HUANG Xiaohong2,SUN Wei1 |
| (1. School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai Lightning Protection Center, Shanghai 200030, China) |
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Abstract In order to evaluate the impulse magnetic field distribution in buildings struck by lightning or nearby lightning strokes, a set of measuring system composed of selfmade magnetic detecting coil and fiber transmitting system was developed. The sensitivity coefficient of the fiber transmitting system was calibrated by sinewave generator. The output of an 8/20 μs current generator is connected with the single turn circular coil whose diameter is 0.3 m to compose the magnetic field generator. The detecting coil is fixed in the center of the single turn coil for calibration. The results show that the developed system can measure the impulse magnetic field effectively and the B/U calibrated coefficient error of the system is less than 3%.
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Received: 10 September 2009
Published: 28 July 2010
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