Active frequency identification label, system and identification method
A technology of radio frequency identification tags and radio frequency identification systems, which is applied to record carriers used in machines, instruments, and induction record carriers, etc., and can solve problems such as high power consumption, difficulties in meeting 20 meters to 50 meters, and short communication distances
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[0093] according to image 3, this embodiment adopts the MSP430 single-chip microcomputer produced by TI Company as the label microcontroller unit, the label radio frequency unit is the radio frequency chip CC2500 of 2.4GHz frequency band produced by TI Company, the label antenna unit is a microstrip antenna based on the printed circuit board, and the label power supply The unit is powered by a lithium battery. CC2500 integrates the tag transmitter, tag receiver, tag receiving signal strength detection unit and tag receiving link quality indicator unit, the data transmission rate can be programmed to 250kbps, and the channel of the tag transmitter and tag receiver is programmable Adjusted, the label microcontroller unit MSP430 can tune the transmitter and receiver to the frequency corresponding to the corresponding channel number by programming the initial channel and channel spacing size and channel number. The working frequency band is 2400MHz to 2483.5MHz, which belongs to ...
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