Passive UHF RFID Strain Sensor Tag For Detecting Limb Movement

Abstract- A strain sensor tag with screen printed antenna for seamless integration with clothing is examined to provide a wireless method for monitoring of human body movements. The strain response of the tag is investigated in air and on human body. While the results indicate strong antenna-body interaction, the strain response of the tag is found to be a monotonic function of the strain. Index terms: Radio frequency identification (RFID), wearable sensor, passive sensor, tag-based sensing