Label inventory method of uhf handheld terminal and uhf handheld terminal

Abstract

The present application discloses a label inventory method for a UHF handheld terminal and the UHF handheld terminal. The method includes: reading the electronic product code EPC area data of the tag, wherein the EPC area data includes the cyclic redundancy check CRC code of the tag, the protocol control PC code of the tag, and the EPC of the tag; The code is compared with the target CRC code in the preset label data table. In the label data table, the target CRC code corresponds to the target PC code and the target EPC, and the target CRC code is a CRC code in the label data table; if If it is determined that the CRC code of the tag does not exist in the tag data table, the tag is determined to be an illegal tag; if it is determined that the CRC code of the tag is the same as the target CRC code, but the PC code of the tag is different from the target PC code, and / or the EPC of the tag Different from the target EPC, the label is determined to be an illegal label. In this way, the illegal tags read by the string can be filtered out, thereby improving the efficiency of the inventory and the accuracy of the inventory.

Description

technical field [0001] The present application relates to the technical field of radio frequency identification, and in particular to a label inventory method of an ultra high frequency (ultra high frequency, UHF) handheld terminal and the UHF handheld terminal. Background technique [0002] Radio Frequency Identification (RFID) is an automatic identification technology and a key technology for building the Internet of Things. The RFID system is mainly composed of readers and transponders. A transponder is mainly composed of an antenna, a coupling element, and a chip. Generally speaking, a tag is used as a transponder. Each tag has a unique electronic product code (EPC), which is attached to an object to identify the target object. The reader, or reader, is mainly composed of an antenna, a coupling element and a chip. It is a device for reading and / or writing tag information, and can be designed as a mobile handheld device or a fixed device. [0003] The application of RFI...

AI Technical Summary

Problems solved by technology

However, due to the long reading distance of UHF technology, which can support multi-label inventory, there are some advantages and some other problems in practice

When carrying out a large number of tag inventory, it is easy to read other tags

For example, in some store or warehouse application scenarios, it is possible to read the labels of other stores or other warehouses, which may cause some illegal labels to be counted during the inventory process, thus mistakenly identifying labels that do not belong to the store or warehouse. Inventory of labels

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