A method for preventing misreading of information outside the reading area of ​​moving objects

Abstract

The invention relates to a method for preventing misreading of information outside the reading area of ​​a mobile object. The system is initialized and set, and at key nodes that require information collection or information verification, relevant RFID electronic information is obtained through an RFID reader and an antenna. Tag information and the lag time of the RFID electronic tag information of the measuring instrument; store the collected RFID electronic tag information in the application server, judge the type of tag information, and filter out the RFID electronic tag information of the measuring instrument and the RFID tag information of the container. ;Threshold value is calculated through the RFID related positioning algorithm; the relationship between the RFID electronic tag lag time and the threshold value of the measuring instrument is judged, and the RFID electronic tag information of the measuring instrument is processed to obtain the correct label information. The invention realizes the control of the RFID reading range, effectively avoids the misreading problem of online reading, improves the reading accuracy rate in the RFID batch reading process, and reduces the system development cost and space occupancy rate.

Description

technical field [0001] The invention relates to the field of reading electronic tag information of moving objects in batches by using RFID technology, in particular to a method for preventing misreading of information outside the reading area of ​​moving objects. Background technique [0002] At present, in China, UHF radio frequency identification RFID technology is widely used in logistics, manufacturing, transportation, medical treatment, Anti-counterfeiting and asset management and other fields. [0003] In the power metering industry, as a metering instrument for managing assets (including single-phase watt-hour meters, three-phase watt-hour meters, collectors, terminals, transformers, etc.), each asset is attached with a unique UHF RFID electronic tag. Item or logistics transportation information. When it is necessary to collect multiple mobile electronic tag data in batches during the entire logistics transportation process of assets, problems such as uncontrollable...

AI Technical Summary

Problems solved by technology

[0005] However, the use of metal shielding also has disadvantages. According to the current application, there are the following problems: 1. The use of metal shielding method will produce cavity effect and multipath effect, which will aggravate the blind spot phenomenon and reduce the recognition rate

In practical applications, it is often unavoidable, and its final distribution is more complicated and cannot be calculated and estimated

A large number of metal reflective surfaces can easily cause signal superposition and cause signal blind spots, that is, multipath effects

2. When using the metal box shielding method, the sealing problem of the metal box is also a problem that is difficult to solve. As long as there is a gap in the box, there will be electromagnetic wave leakage

[0006] Therefore, the method of metal shielding is difficult to solve the misreading problem in the intensive reading mode of UHF electronic tags in practical applications.

Images