RFID tag anti-collision method
An RFID tag anti-collision technology, applied in the field of RFID tag anti-collision, can solve the problems of bandwidth resources, cost increase, time slot waste, etc., and achieve the effect of efficient use of time slots, high signal accuracy, and software program optimization
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[0016] based on the following Figure 3 ~ Figure 5 , specifically explain the preferred embodiment of the present invention.
[0017] An RFID system includes a card reader and n passive tags, and each tag t∈{0,...n-1} has a unique ID serial number t ID ∈{0,1 K}, K is the length of the ID sequence.
[0018] Such as image 3 As shown, the present invention provides a kind of RFID tag anti-collision method, comprises the following steps:
[0019] Step S0, the reader broadcasts a tag identification request, and the tags that receive the tag identification request arbitrarily select a time slot to transmit their respective ID serial numbers to the reader;
[0020] Step S1, after the reader / writer recognizes the ID serial number of the tag, reads the tag data;
[0021] Step S2. The reader judges whether the tag data received in the same time slot is single. If yes, it means that the obtained data is a single tag data, and proceed to step S4. If not, it means that multiple tag d...
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