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Radiofrequency signal response method, responder and radio frequency recognition system

A technology of radio frequency signals and transponders, applied in the field of radio frequency identification, can solve the problems of increasing the processing load of transponders and reducing the performance of RFID systems, and achieve the effects of reducing the number of branches, improving identification efficiency, and reducing processing loads

Inactive Publication Date: 2009-06-17
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0013] As can be seen from the above, although the existing transponder identification method can be used to identify the transponder, when a collision is detected, the counter value of the transponder whose counter value is not zero needs to be updated, which increases the processing load of the transponder. Reduced performance of the RFID system

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  • Radiofrequency signal response method, responder and radio frequency recognition system
  • Radiofrequency signal response method, responder and radio frequency recognition system
  • Radiofrequency signal response method, responder and radio frequency recognition system

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Embodiment Construction

[0039] In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0040] First introduce the transponder identification method provided by the embodiment of the present invention, figure 2The flow of Embodiment 1 of the transponder identification method provided by the present invention is described, including steps 201 , 202 , 203 and 204 .

[0041] Step 201, sending a request reply command to the responder.

[0042] The request reply command will trigger the transponder whose counter value is reply value to reply the request reply command.

[0043] Step 202, receiving a response to the response request response command from the responder.

[0044] A responder whose counter value is the reply value sends a reply after receiving a request reply command. The reply value is a pre-set value, which can be set accordi...

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Abstract

The invention relates to a radio frequency signal response method, a responder and a radio frequency recognition system, belonging to the radio frequency recognition technical field. The radio frequency signal response method comprises: receiving a failure command from an interrogator; judging if the value of a counter of the responder is an answer value, if it is the answer value, generating a random number in the range appointed by the failure command; judging if the generated random number is a preset value, if it is not, refreshing the value of the counter in the responder, while the refreshed value of the counter of the responder is different from the prior value of the counter in the responder queue; if it is a preset value, holding the value of the counter of the responder. The technical scheme can avoid changing the value of the counter of the responder, while the value is not the answer value, to reduce the processing load of the responder and improve the performance of the radio frequency recognition system.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a radio frequency signal response method, a transponder and a radio frequency identification system. Background technique [0002] Radio Frequency Identification (RFID: Radio Frequency Identification) is a non-contact automatic identification technology. Its basic principle is to use radio frequency signals and spatial coupling transmission characteristics to automatically identify target objects and obtain relevant information to achieve automatic identification of the identified. As a key technology, RFID has attracted more and more people's attention due to its many convenient features and wide application in many fields. It has a very wide range of application prospects. RFID can not only replace the currently used barcodes, but also can be used in warehouse management, identification, transportation, food medical care, animal management, access control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
Inventor 张兴炜刘培
Owner HUAWEI TECH CO LTD
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