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Vol. 158, Issue 11, November 2013, pp. 400-407




Design of Aircraft Wire Faults Detecting and Locating System based on DSP
Zhangang YANG, Chengzong LIU, Hongguang LI, Xudong SHI

Aeronautical automation college, Civil Aviation University of China, Tianjin, 300300, China
Tel.: +86-022-24092718
E-mail: zgyang@cauc.edu.cn


Received: 29 July 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems


Abstract: To enhance the aircraft wire detection rate of fault detecting and locating accuracy, a comprehensive portable test system for wire fault diagnosis using reflectometry was presented to detecting and locating fault location. The hardware system consists of DSP control core, pulse transmitter circuit, signal acquisition circuit and LCD circuit, and in this system, a pulse was launched and a reflected signal was received. After the threshold de-noising to the reflected signal based on wavelet decomposition, the exactly fault type and location of the wire was determined by least squares method. The experimental results indicate that this system can detect and locate the aircraft wire faults accurately.


Keywords: Portable, DSP control core, Wire fault diagnosis, De-noising, Least squares method.


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