Low-power STDR CMOS sensor for locating faults in aging aircraft wiring
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- m 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.
Institute of Electrical and Electronics Engineers (IEEE)
Airplanes -- Electric wiring; Electric wiring -- Inspection;
Sharma, C., Harrison, R. & Furse, C. M. (2007). Low-power STDR CMOS sensor for locating faults in aging aircraft wiring. IEEE Senors Journal, 7(1), 43-50. Jan.
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