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It is shown that an array of D-dot sensors can be implemented to not only detect, but for the first time, image very low-frequency electric fields. D-dot sensors sense current proportional to the time derivative of the electric field. The signal of interest is extracted from each D-dot pixel using a lock-in amplifier through an automated multiplexer. We have successfully rendered very low-frequency...
In many application domains, wire faults can have dramatic consequences. Live wire diagnosis is often required to ensure permanent monitoring of the health of embedded cables. A novel reflectometry-based method for online wire diagnosis is presented. Chaos time domain reflectometry (CTDR) takes benefit of the properties of chaotic signals and shows very good potential for the diagnosis of live wires...
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