UHF-RFID AoA Positioning with Multiple Arrays on Agricultural Machinery

Worker safety in agricultural and forestry sites where Remotely Controlled Farm Machinery (RCFM) operate is a serious problem which requires the development of innovative smart systems. Radiolocalization of workers developing their tasks in the machinery vicinity turns out to be an effective method to prevent fatal collisions. In this context, passive RFID technology at the UHF band is a favorable solution due to the simplicity of installation. This paper proposes the use of two commercial RFID arrays to triangulate the location of workers and other obstacles in the surroundings of a RCFM. optimization and performance of the system geometry are investigated by numerical analysis as the most significant parameters change, by obtaining sizing criteria useful for on-site deployment of the system.