RFID intelligent bookshelf multi-column synchronous detection method and bookshelf

Abstract

The invention relates to an RFID intelligent bookshelf multi-column synchronous detection method and a bookshelf, and the method is characterized by comprising the following steps: enabling a system to be powered on, and enabling more than two radio frequency reader-writers on a multi-column RFID intelligent bookshelf to complete the loading of basic parameters; after normal loading of the basic parameters is completed, enabling the radio frequency reader-writer serving as the host and the radio frequency reader-writer serving as the slave start to perform synchronization signal interaction through a 485 synchronization signal bus; using two radio frequency reader-writers on a plurality of columns of RFID intelligent bookshelves for carrying out identity ID coding; using a radio frequencyreader-writer with an identity ID of 1 as a host; using the radio frequency reader-writers of other identity IDs as slave computers, wherein the host is connected with the slave through a 485 bus; enabling the host to send a synchronous detection signal to the slaves, wherein the bus for transmitting the synchronous signal is at a low level at ordinary times; enabling the synchronous detection signal to take a high level of T1 time as a starting part of a pulse, and after the high level of T1 time is detected, enabling the radio frequency reader-writers of the slaves to start to perform data processing and label detection work.

Description

Technical field: [0001] The invention relates to the technical field of radio frequency identification (RFID, Radio Frequency Identification), in particular to an RFID intelligent bookshelf multi-column synchronous detection method and a bookshelf that can effectively reduce the missed detection rate, reduce interference, and improve detection efficiency. Background technique: [0002] In the field of existing radio frequency identification technology, the radio frequency identification system is generally composed of a read-write module, a radio frequency antenna, and a radio frequency tag on the item to be identified. When in use, the radio frequency antenna outputs a radio frequency signal to read the radio frequency The information is fed back to the signal receiving area in the read-write module through the radio frequency antenna. After the read-write module performs data processing on the received information, it can complete the identification of the radio frequency t...

AI Technical Summary

Problems solved by technology

There are three main solutions: first, all the racks work at the same time, increasing the spacing between the racks. This method is more effective, but in actual project applications, the number of racks will be reduced, which cannot meet the needs of customers; the second is The intelligent bookshelves are grouped and numbered, and each group starts to work sequentially from the No. 1 reader. This method increases the time for each round of label detection and reduces the work efficiency of the readers; the third is to change the switching sequence so that the same shelf Antennas with non-adjacent section numbers between columns in the body work together

This method needs to customize the antenna switching sequence of all readers according to the actual scene, the workload is relatively large, and it also increases the difficulty of subsequent code maintenance

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