Greenhouse RFID System
A commercial greenhouse with over 20 acres under it’s roofs asked us to develop and deploy a system to monitor the location each tray of plants as they moved their way from seeding to shipping. We developed a custom micro-controller based RFID (Radio Frequency Identification) reader, a custom RF antenna and a custom RFID tag holder. We used personnel tags because of their low cost and durability. The readers communicate via a multi-drop RS-485 communications network which also supplies power to the readers. We built and installed a network of 70+ RFID readers, over 500 RFID tags, and the network cabling that ties it all together. The system has been operational since 1997.