Chipless RFID-Based Sensing System for Partial Discharge Detection and Identification

A vialess passive metamaterial (MTM)-based Quadrature Phase Shift Keying (QPSK) modulated chipless Radio Frequency Identification (RFID) tag is integrated with a partial discharge (PD) sensor with the objective of PD detection and identification. Individual tags with the sensor can be mounted on specific electrical assets to be monitored. When interrogated by an external reader at 2.4 GHz, the tags respond with signals that contain the ID information and the state of the PD sensor. Any PD events detected can be traced back to the respective electrical assets that generate the PD emissions after a time-domain (TD) analysis, which allows prompt corrective action before the further degradation and premature failure of assets.