Communication method of label and reader-writer in radio frequency identification system
A technology of a radio frequency identification system and a communication method, which is applied in the field of communication between a reader and a tag in a radio frequency identification system, can solve the problems of not fully considering the security mechanism, insufficient information consideration, and the corresponding relationship between the tag states is not clear enough, and achieves state transition. The effect of flexibility, clear correspondence, and perfect communication mechanism
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[0028] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] Such as image 3 As shown, the specific process of the communication method between the reader and the tag provided by the present invention includes the following steps:
[0030] In the first step, when the undestroyed tag is powered on, it enters the ready state.
[0031] Before the reader starts the inventory, it first continuously transmits the radio frequency carrier to provide energy for the tag. After the tag that has not been destroyed is powered on, it initializes its own information, and then enters the preparation state, waiting to receive commands from the reader; the tag that has been destroyed directly enters the destruction state after powering on, and does not respond to any commands from the reader.
[0032] In the second step, the reader sends a classification command, and the tags change their respect...
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