Continuous broken sense lead detection system

摘要

Disclosed is a continuous broken sense lead detection system (“CBSLDS”) for use with a Kelvin-connected device under test (“DUT”), a power source, and detection system stimulus configured to provide a periodic stimulus voltage. The CBSLDS is configured to detect a discontinuity in a first sense lead, second sense lead, or both, that are in signal communication with the DUT. The CBSLDS includes a first transformer, second transformer, first DC-blocker, second DC-blocker, first detection module, and second detection module.

主权项

1. A continuous broken sense lead detection system (“CBSLDS”) for use with a Kelvin-connected device under test (“DUT”), a power source, and detection system stimulus configured to provide a periodic stimulus signal, where the CBSLDS is configured to detect a discontinuity in a first sense lead, second sense lead, or both, that are in signal communication with the DUT, the CBSLDS comprising:
a first transformer having a first transformer primary winding and a first transformer secondary winding, wherein the first transformer is in signal communication with the DUT via the first transformer secondary winding and the detection system stimulus via the first transformer primary winding; a first DC-blocker, wherein the first DC-blocker is in signal communication with the first transformer secondary winding and the DUT; a first detection module, wherein the first detection module is in signal communication with the first: transformer primary winding and the detection system stimulus, and wherein the first detection module is configured to filter, with a first bandpass filter, a first reflected voltage signal from the first transformer primary winding, compare the bandpass filtered first reflected voltage signal against a predetermined threshold voltage signal, and geneate a first comparator signal in response to comparing the bandpass filtered first reflected voltage signal against the predetermined threshold voltage signal; a second transformer having a second transformer primary winding and a second transformer secondary winding, wherein the second transformer is in signal communication with the DUT via the second transformer secondary winding and the detection system stimulus via the second transformer primary winding; a second DC-blocker wherein the second DC-blocker is in signal communication with the second transformer secondary winding and the DUT; and a second detection module, wherein the second detection module is in signal communication with the second transformer primary winding and the detection system stimulus, and wherein the second detection module is configured to filter, with a second band filter, a second reflected voltage signal from the second transformer primary winding, compare the bandpass filtered second reflected voltage signal against the predetermined threshold voltage signal, and generate a second comparator signal in response to comparing the bandpass filtered second reflected voltage signal against the predetermined threshold voltage signal.