Title: A near-field magnet peak values detecting method to locate short circuit points on PCB

Authors: Shuqiang Huang; Jielin Zeng; Hongchun Zhou; Zhusong Liu; Yuyu Zhou

Addresses: Network and Education Technology Center, Jinan University, Guangzhou, 510632, China ' Guangdong Planning and Designing Institute of Telecommunications Co., Ltd., Guangzhou, 510632, China ' Network and Education Technology Center, Jinan University, Guangzhou, 510632, China ' Faculty of Computer Science and Technology, Guangdong University of Technology, Guangzhou, 510006, China ' Network and Education Technology Center, Jinan University, Guangzhou, 510632, China

Abstract: The existing print circuit board (PCB) short circuit fault detecting schemes can only determine the existence of shorts rather than the precise location of the circuit. To solve this problem, this paper proposes a short circuit locating scheme based on the near-field magnetic specific point detecting. First, the existences of the shorted wires are detected by a short circuit detecting algorithm. Second, the short circuit networks are excited by a high voltage. Third, the peak values of the magnetic near-field exited by the voltage will detected by the sensors arranged above the circuit board and analysed. This scheme can locate the precise position of the short circuit point on board. The simulation results show that the technique is operational and can effectively locate the short circuit point position.

Keywords: print circuit board; PCB; short circuit; near field magnet detecting; impendence mismatch; magnetic sensor.

DOI: 10.1504/IJES.2017.084694

International Journal of Embedded Systems, 2017 Vol.9 No.3, pp.262 - 274

Received: 11 Nov 2015
Accepted: 15 May 2016
Published online: 21 Jun 2017 *

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