RFID labels is a small electronic device that uses radio waves to wirelessly transmit and receive information. They are commonly used in a variety of applications including tracking and identifying objects, inventory management, access control and contactless payment systems.
1. RFID labels components
RFID labels consist of three main components: the RFID chip (or tag), the antenna, and the substrate. RFID chips contain a unique identifier and, in some cases, additional data storage capacity. Antennas are used to transmit and receive radio signals. The chip and antenna are typically attached to the substrate or material that forms the tag's physical structure.
When an RFID reader emits a radio signal, it activates RFID labels within its range. The RFID tag's chip receives energy from the reader signal and uses it to provide power.
3. Label response
Once activated, the RFID tag's antenna captures energy from the reader's signal. The tag uses the captured energy to power the RFID chip. The RFID labels's chip then modulates the radio waves and sends a response back to the reader. This modulation encodes the tag's unique identifier and any other relevant data.
The reader receives modulated radio waves from the tag. It decodes and processes the information, which may involve identifying the tag's unique ID or retrieving the data stored on the tag.
5. Data processing
Depending on the application, the reader can send the data to a computer system or database for further processing. In some cases, readers can make decisions or trigger actions based on the information received from RFID labels. For example, it can update inventory records, grant access to secure areas, or track the location of assets.
In summary, RFID labels work by using radio waves to communicate between an RFID reader and a passive or active RFID tag. The reader provides the energy needed to power the tag, which then responds with its unique identifier and possibly other data, identifying and tracking objects and assets.
RFID labels can be passive, active, or battery-assisted passive (BAP), depending on how they are powered:
1. Passive RFID labels
Passive tags have no built-in power source and rely entirely on the energy of the reader signal. They rely on energy transmitted by an RFID reader (also called an interrogator) to power the chip and transmit data. When a reader emits a radio signal, the tag's antenna captures the energy and uses it to transmit its unique identifier back to the reader.
2. Active RFID labels
Active tags have their own power source, usually a battery. It can transmit signals over longer distances. Active tags can broadcast their data periodically, making them suitable for real-time tracking applications.
3. BAP labels
The BAP tag is a hybrid tag that uses passive power and battery power to extend its range.
RFID technology is available in a variety of frequency ranges (e.g., LF, HF, UHF, and microwave), which determine the range, data transfer rate, and suitability for specific applications.
RFID labels are widely used in industries such as retail, logistics, healthcare, and manufacturing to increase efficiency, security, and automation.
In summary, RFID labels work by using radio waves to enable communication between the RFID tag and a reader, allowing objects or individuals to be identified and tracked in a variety of applications.
RFID technology is available in a variety of frequency ranges (e.g., LF, HF, UHF, and microwave), which determine the range, data transfer rate, and suitability for specific applications. Therefore, RFID tags are widely used in industries such as retail, logistics, healthcare, and manufacturing to increase efficiency, security, and automation.
The cost of RFID labels can vary widely depending on a variety of factors, including the type of RFID technology used, frequency range, quantity purchased, tag features and functionality, and the supplier or manufacturer.
Keep in mind that RFID labels are often used for specific applications, and their cost can often be justified by the efficiency, accuracy, and automation benefits they provide in various industries such as retail, logistics, healthcare, and manufacturing. In order to get an accurate estimate of the cost of RFID labels for your specific application, it is recommended to contact the RFID tag supplier or manufacturer directly. They can provide you with a quote based on your specific requirements, including quantities required, features required, and any customization required. But the actual costs you encounter will depend on your specific requirements and your negotiations with your RFID tag supplier.