The 433 MHz frequency is used for active tags, while the 860–960 MHz range is used mostly for passive tags and some semi-passive tags. The ultra high frequency range includes frequencies from 300 to 1000 MHz, but only two frequency ranges, 433 MHz and 860–960 MHz, are used for RFID applications. If the ID is incorrect or no tag is found, the car cannot be started. If the tag ID is correct, the car can be started. When that key is used to start the car, an RFID interrogator placed around the key slot reads the tag ID. For example, in an automobile vehicle immobilizer system, an LF tag is embedded inside the ignition key. The automotive industry is the largest user of LF tags. They are used in access control, asset tracking, animal identification, automotive control, as vehicle immobilizers, healthcare, and various point-of-sale applications (such as Mobil/Exxon SpeedPass). The LF tags can be easily read while attached to objects containing water, animal tissues, metal, wood, and liquids. They are expensive to manufacture, and tags using them are thicker than others at higher frequencies. The tag antennas are usually made of a copper coil with hundreds of turns wound around a ferrous core. The LF tags have no or limited anti-collision capabilities therefore, reading multiple tags simultaneously in the IZ is impossible or very difficult. They have the lowest data transfer rate among all the RFID frequencies and usually store a small amount of data. ![]() The LF tags are passive tags (no battery and transmitter on the tag) and have a short read range of a few inches. They use near-field inductive coupling to obtain power and to communicate with the interrogator. The tags in this range are generally called LF tags. It is available for RFID use all over the world. This range has been in use for RFID tags for animal tracking since 1979 and is the most mature range in use. Contact usĭon’t forget to take a look at the other quality RFID technology hardware solutions HID can deliver.Low frequency range includes frequencies from 30 to 300 KHz but only 125 KHz and 134 KHz (actually, 134.2 KHz) are used for RFID. HID can customize a tag to fit your unique requirements for chip type, dimensions, programming and materials.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |