Target control based on RFID technology has a wide range of application areas

This technology can be used for object positioning, such as warehouse goods positioning, hospital medical equipment management, etc. It can also be used for personnel positioning, such as in important fields such as coal mine underground personnel positioning, museum tourist guidance, prison prisoner supervision, etc.

The most basic method for target localization and tracking based on RFID technology is the tag reading method. During the logistics transportation of goods, all items are distributed and scanned at various key nodes, and in this process, the location of a certain item in the transportation process is known. This information can make the logistics process traceable. When an item is lost, There is more reference information when querying and holding accountable. This method of target localization and tracking is relatively basic and can be achieved by simply reading labels. However, in some requirements, real-time positioning of targets in indoor environments is required. For example, when hospitals carry out information management of infants and patients, real-time positioning is needed to facilitate hospital management. In this case, the most important thing is to ensure the accuracy and real-time performance of target localization. In traditional positioning methods, GPS positioning, base station positioning and other technologies have been widely applied, but these technologies have shown good performance in outdoor open environments, but cannot meet the requirements for indoor environments. RFID positioning technology, with its characteristics of low cost and non-contact communication, is expected to become the preferred indoor positioning technology.

At present, various RFID positioning methods have been proposed, which combine indoor positioning principles with the characteristics of RFID technology itself. RFID positioning methods can be divided into tag based positioning, reader based positioning, no transceiver, and hybrid methods according to system composition. Based on label localization, the target needs to carry a label, such as an active label, to periodically emit some signal information; Based on reader localization, it is necessary to locate the object and carry a reader to collect nearby label information; The non transceiver model can obtain the location information of the positioning object without carrying any devices; The hybrid method combines RFID technology with other technologies, such as inertial navigation systems, wireless sensor network systems, etc.

Among them, the maternal and infant RFID identification management and infant anti-theft management system are typical target positioning and tracking systems. In addition, it also includes real-time positioning systems for prison RFID personnel and medical applications to control the range of activities of infectious patients.