Low-Power STDR CMOS Sensor for Locating Faults in Aging Aircraft Wiring

Author

Sharma, Chirag R. ; Furse, Cynthia ; Harrison, Reid R.

Author_Institution

Dept. of Electr. & Comput. Eng., Utah Univ., Salt Lake City, UT

Volume

7

Issue

1

fYear

2007

Firstpage

43

Lastpage

50

Abstract

A CMOS sensor used to locate intermittent faults on live aircraft wires is presented. A novel architecture was developed to implement the Sequence Time Domain Reflectometry method on a 0.5-mum integrated circuit. The sensor locates short or open circuits on active wires with an accuracy of +/-1 ft when running at a clock speed of 100 MHz. A novel algorithm is proposed that utilizes the shape of the correlation peak to account for sub-bit delay, thus increasing the accuracy of fault location. The power consumed by the microchip is 39.9 mW

Keywords

CMOS integrated circuits; aircraft maintenance; fault location; low-power electronics; military aircraft; sensors; time-domain reflectometry; wiring; 0.5 micron; 39.9 mW; STDR CMOS sensor; aging aircraft wiring; live aircraft wires; low-power electronics; pseudorandom noise; sequence time domain reflectometry; spread spectrum; wire fault location; Aging; Aircraft; Circuit faults; Clocks; Delay; Fault location; Reflectometry; Shape; Wires; Wiring; CMOS sensor; pseudo-random noise; reflectometry methods; spread spectrum; wire fault location;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2006.886866

Filename

4039327