Multisensing IIoT Platform Enabled by Custom BAP RFID TAG

In this work, we introduce the design of a Battery-Assisted Passive (BAP) Radio Frequency IDentification (RFID) tag incorporating sensing capabilities. The tag operates at the Ultra High Frequency (UHF) band to allow remote detection and data exchange. Designed for environmental monitoring in both industrial indoor facilities and outdoor environments, the tag is characterized by a general purpose microcontroller facilitating the data transmission between the RFID interface and the sensors. Particularly, the RFID chip integrated in the proposed system is configured as bridge for SPI communications, whereas the RFID reader acts as master node. Up on reader requests, the microcontroller triggers the required sensor to perform a measurement which result is stored in the RFID chip memory, easily accessible by the reader throughout standard RFID protocol operations. The tag encapsulates temperature, relative humidity, pressure, and 3D acceleration sensors. After the tag antenna design, fabrication, and system integration, the whole proposed system is verified experimentally in operating conditions to show its reliability.