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Method for searching and relatively positioning responder by using mobile RFID reader

A relative positioning and reader technology, applied in the field of radio frequency identification, can solve problems such as inability to locate transponders accurately, and achieve the effect of reducing power consumption

Inactive Publication Date: 2016-03-02
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for searching and relative positioning of a transponder by using a mobile RFID reader, aiming at solving the problem of whether there is a transponder in order to determine whether there is a transponder depending on the successful reading of the transponder ID, and the inability to detect the transponder in concealed engineering The problem of accurate positioning of transponders

Method used

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  • Method for searching and relatively positioning responder by using mobile RFID reader
  • Method for searching and relatively positioning responder by using mobile RFID reader
  • Method for searching and relatively positioning responder by using mobile RFID reader

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Embodiment Construction

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0040] The application principle of the present invention will be further described below with reference to the drawings and specific embodiments.

[0041] This embodiment is based on a reader (such as figure 2 Shown) and transponder, the frequency is 100KHz, the reader, transponder and working frequency applicable to this method are not limited to this. The reader is composed of FPGA module 1, transmitting circuit module 2, receiving circuit module 3, amplifying and filtering module 4, AD conversion module 5 and so on. The FPGA includes an input and output controller 11, a NIOSII processor 12, a signal modulation modul...

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Abstract

The invention discloses a method for searching and relatively positioning a responder by using a mobile RFID reader, comprising steps of periodically transmitting an exploration carrier wave signal, calculating return signal strength RSS of every exploration cycle and environment signal strength RSSe, utilizing RSS to perform correction on the RSS to obtain effective signal strength RSSr returned by the exploration cycle responder, calculating the mean values RSSa of the plurality of exploration cycle effective signal strength as return signal strength of the responder, and obtaining the distance between the responder and the reader according to the RSSa obtained after the reader is stable through table checking and calculation. The method disclosed by the invention changes application mode that the traditional RFID technology is used for reading the responder ID. The invention is applicable to the detecting and positioning the RFID responder in the hiding engineering and is applicable to triggering the reading operation through detecting the responder, and reduces the power consumption of the reader.

Description

Technical field [0001] The invention belongs to the technical field of radio frequency identification, and in particular relates to a method for searching and relative positioning of a transponder using a mobile RFID reader. Background technique [0002] Concealed projects refer to projects that need to be covered or covered, such as foundations, electrical pipelines, and water and heating pipelines. With the development of radio frequency identification technology, low-frequency RFID transponders are increasingly used in concealed projects to identify key facilities in concealed projects, prevent key facilities from being destroyed, and further realize the information management of concealed assets. Collection of performance parameters, etc. So within a certain range, how to quickly find and accurately locate the transponder that identifies the key facility in the hidden project, and read its ID information, is a problem that must be solved. The core application of traditional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
CPCG06K7/0008
Inventor 刘刚张润南王灿宋慧敏
Owner XIDIAN UNIV
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