RFID data compression method

Abstract

The invention discloses an RFID data compression method. According to the RFID data compression method, an expandable data model is used for respectively storing motion path sequences of an RFID object, the staying time intervals corresponding to the sequences and a path diagram, a path encoding mode capable of compressing RFID reading data is established, and reading data compression is conducted on multiple aggregation layers, including aggregation path sequences, a staying position, the start time of staying, the end time of staying and the like, of the RFID movable object; compression with different data granularities can be conducted on the staying position, and the start time of staying and the end time of staying according to the user needs for RFID application. The RFID data compression method can be suitable for the grouping movement of the large-scale RFID objects in groups and the movement of an independent RFID object, can express the movement of RFID objects with a long path and a circulation path, and support the RFID application such as path-oriented query.

Description

technical field [0001] The invention relates to the field of Internet of Things data processing, in particular to an RFID data compression method. Background technique [0002] RFID (Radio Frequency Identification) is a non-contact automatic identification technology that automatically identifies electronic product labels with unique identifiers that have been attached to target objects through radio frequency signals, and obtains the attributes and locations of RFID objects data. As a key technology of the Internet of Things, this technology is widely used in commercial activities. RFID applications can track the historical trajectory of objects based on their location information (data lineage) in different periods. [0003] The general form of reading data generation is (EPC, position, tin, tout), which can represent the historical path of the RFID object EPC at the position from tin to tout. Since RFID objects often move in large batches at the same time and have the s...

AI Technical Summary

Problems solved by technology

[0004] The existing method compresses the path for the grouped objects and stores the grouped path information uniformly, which can significantly reduce the connection load of the path query, but it is easy to cause prime number overflow when there are long paths in the RFID object, and the long path cannot be expressed

And since objects may have the same position in different time intervals, that is, cyclic paths, existing methods cannot solve the problem that RFID objects appear in the same position at different times

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