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 improving efficiency
Active Publication Date: 2020-07-24
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 a receiving window value. The method comprises the following steps that: an initial receiving window value is set; a set is established; a reader sends a radio frequency signal, wherein the signal comprises a receiving window value and a set; after receiving the radio frequency signal, the label carried by the article judges whether the code and / or the characteristic value of the label is in the set, if so, the label does not respond, otherwise, the label generates a response code and sends the response code to the reader;the reader identifies the label response code and adds the identified label code and / or feature value to the set; the number of idle time slots, collision time slots and successful time slots in the receiving window is counted; whether the number of collision time slots is equal to 0 or not is judged, if yes, it is judged that scanning is finished, and otherwise, a time slot proportion is calculated; and a receiving window value is adjusted according to the time slot proportion. According to the method and the system, the technical problem of how to improve the code scanning efficiency by adaptively adjusting the receiving window value is solved.
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