An RFID Label is an electronic tag that reads data by using radio frequency. It can read data through a wide range of materials, while barcodes can only read a single object at a time. RFID labels are also capable of storing large amounts of information. They use radio frequency instead of infrared or lasers to read information. RFID readers can read a large number of RFID tags at the same time. An RFID label is also more accurate than a barcode, since it can identify the object it is attached to.
Active RFID tags transmit data over a greater distance
A good example of how active RFID tags can benefit businesses is in the beverage industry. The Beverage Metrics Company uses an active RFID system to keep track of the number of pours per drink. It uses a tilt sensor integrated into the RFID tag and can alert customers when a bottle of wine is gone. The Beverage Metrics Company's system also integrates time-temperature sensors into RFID devices during the transportation process. This system allows for a complete temperature traceability of food during the entire chain of service.
An active RFID tag transmits a small message from the time of manufacture until it runs out of battery life. It transmits a single message to a nearby reader at a fixed frequency. The frequency at which the tag transmits will determine how long it lasts. While the basic tags have no receiving circuit, more advanced tags can store data and can be read or written to. Active RFID tags are more expensive than passive RFID tags.
Passive RFID inlays transmit data over a shorter distance
The range of passive RFID inlays varies. Typically, the RF intensity is lower over a shorter distance, and doubles at a separation distance of one-hundredth of a meter. However, the range of passive RFID inlays can be longer depending on the type and frequency of the tags. The distance between a tag and reader will determine the range of a passive tag, and can even be up to 80 feet for some types.
High-frequency RFID tags operate at 15 MHz. These are most commonly used in access control and are made using the same techniques as printed wiring boards. These tags are thinner than credit cards, and have the same surface area as a button. They can be embedded in a variety of materials, including buttons. Some tags are encapsulated and have a long enough reading range to survive in a laundry machine.
RFID smart labels incorporate a passive ultra-high frequency (UHF) inlay
There are three major types of RFID interrogators: HF, LF, and UHF. The HF version is typically used in applications where the range of communication between the tags and reader is 1 m or less. The HF version of an RFID smart label incorporates a passive ultra-high frequency (UHF) inlay, which allows the reader to communicate with multiple tags at the same time. HF tags can also be embedded in non-metallic objects. RFID smart labels that incorporate an HF tag are especially suitable for securing library and airline books.
Unlike the passive inlay, which requires a power source, RFID smart labels incorporate an antenna, which receives the RFID reader's signal and modulates it into a unique pattern. Unlike other types of RFID Label tags, passive RFID inlays can be more flexible and applied to different surfaces. They require a data processing system to enable them to work efficiently. They are also much smaller, and more flexible than their active counterparts.
RFID readers can read large numbers of RFID tags simultaneously
A fixed RFID reader is powered to remain in one location. It sits in the corner of a building quietly collecting vast amounts of data continuously. It is also able to cope with a variety of environmental conditions. Its design features multiple antennas that can connect to up to 32 RFID tags simultaneously. The number of antennas you need depends on the size of the area you need covered. For a small area, one antenna may be enough.
The size of the RFID tag determines its utility and sensitivity. If there are two tags sending signals simultaneously, the reader will have trouble distinguishing them. Fixed RFID readers can read multiple tags simultaneously because they use special anti-collision algorithms that let them “singulate” on specific tags. This allows the reader to talk to a single tag at a time in rapid succession, giving the appearance of reading many tags at once.
RFID smart labels are used for peel-and-stick applications
RFID smart labels, also known as radio frequency identification (RFID) tags, are identifiers with memory support that communicate with dedicated devices via radio frequency. The tags contain a silicon chip and an antenna and are typically supplied in rolls. They can be printed with thermal transfer technology, direct impression printers, or special printers and are highly customizable. Read more about RFID smart labels and how they work to learn more.
RFID transponders can be mechanically attached to products, like packaging. But these tags can also be glued into place. These “smart labels” share the same functionality but are manufactured using different types of adhesives. The CMC Klebetechnik company offers many types of adhesives for RFID tags. These labels adhere to a variety of surfaces and can be customized to be either repellent or attractive.
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