What is Passive RFID

Passive RFID (radio frequency identification) technology, as an identification technology that does not require a built-in power supply, is gradually becoming one of the key technologies in the field of Internet of Things (IoT). Passive RFID systems consist of RFID tags, RFID readers and antennas, and RFID middleware, where the tags operate and communicate through radio frequency waves received from the readers. Passive RFID tags have become an important medium for passive sensing because of their lightweight, labelable and easy deployment characteristics, and are widely used in the field of Internet of Things.

The key advantage of passive RFID technology is its ability to make non-powered devices or assets visible on the Internet, thereby realizing the vision of the Internet of Things. For example, by placing RFID tags on inanimate objects, items can be tracked and managed, which has significant application value in areas such as asset management and logistics tracking. The passive RFID system transmits tag data to business systems such as enterprise resource planning (ERP), material requirements planning (MRP), and warehouse management system (WMS) through RFID middleware, thereby achieving real-time monitoring and management of items.

In addition, passive RFID technology also shows great potential in the fields of environmental perception and intelligent identification. For example, RFID-based passive sensing technology can use the backscatter communication mechanism to sense designated objects through the dynamic characteristics of environmental factors carried in tag reflection signals, such as body behavior recognition, breathing and heartbeat monitoring, etc.

In general, passive RFID technology plays an increasingly important role in the Internet of Things and intelligent sensing fields with its unique advantages. It not only improves the efficiency and reliability of asset management, but also provides environmental sensing and intelligent identification. new possibilities. With the continuous development of technology and the expansion of application scenarios, the application scope and efficiency of passive RFID technology will be further improved.