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Array-based Approach for Indoor Positioning System using RFID Passive Tags

Pereira, J. ; Faria, S. ; Mendes, S. P. M. ; Gomes, H. ; Neves, C.

Array-based Approach for Indoor Positioning System using RFID Passive Tags, Proc Conference on Telecommunications - ConfTele, Lisbon, Portugal, Vol. -, pp. - - -, June, 2019.

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Abstract
Industrial Internet of Things (IIoT) is an accepted term to define connections between machines, devices and people on the plant floor, supporting the development of integrated systems and inter-device communication networks, which provide new ways to enhance the industrial space. This concept demands a network of interconnected devices and sensors that are capable of monitoring industrial processes with continuously improvement capabilities. On a technological point of view, it also means the usage of a blend of technologies such as cyber-security, cloud computing, mobile technologies, 3D printing, advanced robotics, big data, IoT, Radio Frequency Identification (RFID) technology, and Artificial Intelligence (AI) which has led to innovations like the smart factory with predictive technology. Passive RFID tags are well-known sensors that can achieve the IIoT purpose, providing a long-range indoor positioning system (IPS). In this context, this paper presents a RFID IPS prototype that will be used in a mold industry 4.0 project and will allow the location of passive RFID tags up to 15 meters from the reader. To cover a larger industrial plant, the UHF RFID reader was mounted and tested on an industrial crane. With a precision around half a meter for long range and 0.08 meters for short range, any small RFID passive tag attached to an industrial tool can be located, using an array of RFID readers. This novel mobile RFID IPS prototype will be deployed for the first time in mold industries through the Tooling4G project.