A Battery-Less RFID-Based Wireless Vibration and Physical-Shock Sensing System Using Edge Processing for Long-Term Measurements

Abstract

This paper presents an ultrahigh frequency (UHF) band radio frequency identification (RFID) tag and edge processing-based vibration frequency/physical shock sensing system. In this paper, shorter and longer radio wave irradiation times, which are called standby and active modes, respectively, are employed to achieve the energy-efficient operation of an RFID reader and an accurate sensing performance. The introduction of a standby mode is useful for lowering heat generation and CO2 emissions for the RFID reader during long-term measurements. This edge processing at the RFID reader also stores the data only in the active modes, reducing the amount of data uploaded to an Internet of Things (IoT) cloud. The proposed method was experimentally evaluated by monitoring the vibrations caused by a refrigerator.