Abstract
We experimentally demonstrate a time-domain reflectometry (TDR) method for detecting cable faults, which employs a Boolean circuit to generate a wideband chaotic waveform acting as probe signal and further locates faults by correlating a duplicate of the probe signal and the back-reflected signal. The Boolean circuit is a small delayed-feedback system mainly consisting of two exclusive-OR (XOR) gates and one exclusive-NOR gate. Benefiting from fast response and high operating voltage of logical gates, the Boolean circuit can achieve a high-bandwidth and large-amplitude output which cause a high resolution and a long measurable distance for the TDR. Our experimental results show that a 2 km detection distance of a breakpoint and a \(\sim \)0.1 m spatial resolution can be achieved by means of a chaotic signal from the Boolean circuit with 533 MHz bandwidth and 2.5 V amplitude. Furthermore, we experimentally demonstrate the detection of short circuits and impedance mismatches can be successfully implemented using our method.
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Acknowledgments
The authors would like to thank all reviewers for their helpful comments and suggestions on this manuscript. This work was partially funded by the National Natural Science Foundation of China (Grant Nos. 61227016, 61240017, 61205142, 51404165), the Natural Science Foundation for Young Scientists of Shanxi Province (Grant Nos. 2012021013-2, 2012021011-4) and the Natural Science Foundation of Shanxi Province (Grant No. 2013011019-3).
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Zhang, J.G., Xu, H., Wang, B.J. et al. Wiring fault detection with Boolean-chaos time-domain reflectometry. Nonlinear Dyn 80, 553–559 (2015). https://doi.org/10.1007/s11071-014-1888-x
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DOI: https://doi.org/10.1007/s11071-014-1888-x