Method for recognizing contrary collision of inquiry tree radio frequency labels of amalgamation database

• Main Authors: ZHU WENJI, HE YIGANG, DENG XIAO, LIU MEIRONG
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2008
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses an anti-collision identification method which integrates the query tree radio frequency label of a database, and the method comprises the following steps that: a reader sends out a query command, and tags which are matched with the query command send out the ID to the reader after receiving the query command. If only one tag responses, the tag is identified; if a plurality of tags response, the tags have a collision. To the tags which have the collision, firstly the database is utilized to search the tag ID which is matched with the received data of the reader, and judgment and identification are carried out. If the tags are not totally identified, a query node is added to continue the query until all tags are identified. The invention indentifies the tags through the improved query tree anti-collision algorithm, and the prior tag database is utilized to indentify, thereby improving the identification efficiency. The algorithm does not require the tag to have an extra memory function,