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A kind of RFID data compression method

A technology for data compression and data reading, applied in other database retrieval, other database indexing, code conversion and other directions, can solve problems such as overflow of prime numbers, reduce path query connection load, cannot express long paths, etc., achieve efficient data, solve long-term problems Effects of Paths and Cyclic Paths Expressing Problems

Active Publication Date: 2021-08-17
HUNAN UNIV OF HUMANITIES SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A kind of RFID data compression method
  • A kind of RFID data compression method
  • A kind of RFID data compression method

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific implementation examples and with reference to the accompanying drawings.

[0017] figure 1 It is a schematic flowchart of an RFID data compression method provided by the present invention. First design the RFID compressed data storage model; then the user specifies the time interval and location granularity, group the read data by time interval and location granularity, and put the grouping results into the stay record table; according to the user-specified time interval and location granularity, the RFID objects The moving paths of all RFID objects are grouped, and the grouping results are put into the path sequence table; and a path graph is constructed for the moving paths of all RFID objects, and put into the path graph.

[0018] Wherein, in the RFID compressed data storage mode...

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Abstract

The invention discloses an RFID data compression method. An extensible data model is used to store the moving path sequence of RFID objects, the corresponding dwell time interval, and the path graph, and a path encoding mode that can compress RFID reading data is established. Read data compression at multiple aggregation levels such as the stay position, stay start time, and stay end time; and can compress the stay position, stay start time, and stay end time with different data granularities according to the needs of RFID application users Processing, it can adapt to large-scale RFID object group movement and independent RFID object movement, can express long-path and circular-path RFID object movement, and supports RFID applications 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/901H03M7/30
Inventor 不公告发明人
Owner HUNAN UNIV OF HUMANITIES SCI & TECH