Establishment of magnetic sensors in above ground marking system

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Sun, L.Y.^1 ; Li, Y.B.^2 ; Wu, Y.T.^1 ; Li, W.P.^1 ; Wu, P.Q.^1

School of Control and Mechanical Engineering, Tianjin Chengjian University, Tianjin

300384, China^1

State Key Lab. of Precision Measurement Technology and Instrument Tianjin, University Tianjin, 300072, China^2

关键词: Above grounds;    Extreme conditions;    High resolution;    Magnetic field parameter;    Magneto resistive sensors;    Marking system;    Seal-ability;    Temperature test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012024/pdf
DOI  :  10.1088/1757-899X/220/1/012024

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Magnetic sensors used in Above Ground Markers (AGM) to measure the magnetic field signals are one of the main parts of AGM. By collecting the change of magnetic field parameter using magnetic sensors, AGM can record the precise time when MFL-PIG is passing by the AGM. In this paper, the magnetic sensors, such as induced coil and magneto-resistive sensor, are investigated in characteristics and performance of measurement. With advantages of low cost, high resolution and wide range of measurement, the induced coil is adopted in a novel AGM. The traction test, seal ability test and temperature test show that the AGM with induced coil as magnetic sensor works well under extreme condition and reacts to change the magnetic field with high sensibility.