Identifying and Tracking Tags with Radio-Frquency Identification

Introduction Radio Frequency Identification (RFID) automatically identifies and tracks tags attached to objects by wirelessly transmitting data wirelessly using electromagnetic fields. Tags contain electronically stored information. Several tags are read by being powered by a short distance (several meters) by a magnetic field (electromagnetic induction) and then function as passive transponders for emitting microwave or UHF radio waves (ie high frequency electromagnetic radiation) .

Radio Frequency Identification (RFID) uses electromagnetic fields. RFID is not new as it is being used to identify and track tags attached to objects in most industries. Tags electronically store information. There are two kinds of RFID tags, active and passive. The passive tag collects energy from radio waves of the RFID reader, the active tag has a power source such as a battery, and it can operate at a distance of several hundred meters from the RFID reader. You can use RFID technology to identify objects in the Internet 's things and link them to the Internet.

Radio Frequency Identification (RFID) uses electromagnetic fields to automatically identify and keep track of tags attached to objects. Tags contain electronically stored information. Passive tags require radio waves to collect energy from nearby RFID readers. The active tag has a local power supply (such as a battery) and can be operated in a location several hundred meters away from the RFID reader. Unlike barcodes, labels do not need to be in the viewer's line of sight, so they can be embedded in the tracked object. RFID is a method of automatic identification and data collection (AIDC)

Radio frequency identification is the use of objects commonly referred to as RFID tags that are applied or incorporated into products, animals or the human body for identification and tracking using radio waves. Some tags can be read a few meters past the reader's line of sight. An RFID device is used for the same purpose as a barcode or magnetic strip on the back of a credit card or ATM card and provides a unique identifier for the object. Also, just as you need to scan a barcode or magnetic strip to get the information, you need to scan the RFID device to get the identification information.

Radio frequency identification is a tracking technique used in many fields. The RFID tag includes an antenna capable of transmitting and receiving radio signals and a chiplet including broadcast information. In passive tags, when the device receives a radio signal, the tag uses the provided energy to broadcast a weak response. The active tag includes a built-in power supply that improves signal strength and communication range for tracking outdoors. Long distance RFID tracking is directionally inherent. That is, the user can determine the approximate direction and extent of the tracking item.