Principle and Classification of RFID Handheld Terminal
Principle and Classification of RFID Handheld Terminal Firstly, Introduction of RFID technology RFID is a kind of non-contact automatic recognition technology, it recognizes object and gets data with the radio frequency signal. It is most used in anti-counterfeiting tracing, warehouse material tracing and workshop producing tracing. RFID is made up by three parts, they are label, reader and antenna. Working frequency of RFID could be divided into LF, HF and UHF. For LF, the frequency is between 30 and 300KHz, 134.2KHz is the most common one. For HF, the frequency is between 3 and 30MHz, 13.56MHz is the most used one. For UHF, the frequency is between 300 and 968MHz, 902-928 MHz is most used scale. Secondly, Characters of RFID Thirdly, Comparison of RFID and Barcode Penetrability Information Read/write Reading mode Scan Quantity and speed Reuse Barcode NO Small Only Read CCD/Laser Low speed/one NO RFID YES Big Read/Write wirele...