Method and system for adaptively adjusting receiving window value
An adaptive adjustment and receiving window technology, applied in the field of electronic identification, can solve the problems of not improving the scanning efficiency and achieve the effect of identifying time balance and improving efficiency
Active Publication Date: 2022-03-22
HANGZHOU DIANZI UNIV
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- Application Information
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Problems solved by technology
[0004] At present, there is no technical solution to improve the scanning efficiency by adaptively adjusting the receiving window value
Method used
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Embodiment Construction
[0035] The preferred embodiments of the present invention will be described in detail below.
[0036] The embodiment of the present invention can rely on a tag identification technology system (a smart school bag system based on RFID tag identification technology or a logistics warehouse management system based on RFID tag identification, etc.) Whether to respond is judged according to the information of the radio frequency signal.
[0037] The method for adaptively adjusting the receiving window value in Embodiment 1 of the present invention, such as figure 1 shown, including the following steps:
[0038] Step S01, setting an initial receiving window value;
[0039] Step S02, establishing a set, which is used to store tag codes and / or tag feature values;
[0040] Step S03, the reader sends a radio frequency signal, and the signal includes a receiving window value and a set;
[0041] Step S04, after receiving the radio frequency signal, the tag carried by the item judges w...
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The invention discloses a method and a system for adaptively adjusting the receiving window value. The method includes the following steps: setting an initial receiving window value; establishing a set; the reader sends a radio frequency signal, which contains the receiving window value and the set; after receiving the radio frequency signal, the tag carried by the item judges whether the code and / or characteristic value of the tag is In the set, if so, the tag does not respond, otherwise the tag generates a response code and sends it to the reader; the reader recognizes the tag response code and adds the identified tag code and / or characteristic value to the set; counts the free time slots in the receiving window , the number of collision time slots and successful time slots; determine whether the number of collision time slots is equal to 0, if so, determine the end of the scan, otherwise calculate the time slot ratio; adjust the receiving window value according to the time slot ratio. The method and system of the present invention solve the technical problem of how to improve the code scanning efficiency by adaptively adjusting the value of the receiving window.
Description
technical field [0001] The invention belongs to the technical field of electronic identification, in particular to a method and system for adaptively adjusting a receiving window value. Background technique [0002] Electronic code scanning technologies such as barcode recognition technology and RFID tag recognition technology are non-contact target object recognition and tracking technologies, which are widely used in many fields such as life and production. [0003] In the technical solution for identifying a large number of items by repeated scanning, the receiving window is usually fixed each time. If the receiving window is set to be large, the scanning time will increase; if the receiving window is set to be small, the recognition rate of scanning will be reduced. It can be seen from this that a technical solution capable of adjusting the receiving window value according to the actual situation is needed, especially when the number of items is not known in advance. ...
Claims
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IPC IPC(8): G06K7/10
CPCG06K7/10207
Inventor 严军荣叶仁杰雷艳超王定娟王海辉
Owner HANGZHOU DIANZI UNIV