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Method and system for data increment backup of sensing layer of Internet of Things

A technology of incremental backup and perception layer, applied in digital transmission system, redundancy in operation for data error detection, transmission system, etc., to achieve accurate recording, improved query speed, good readability and portability Effect

Active Publication Date: 2013-03-20
WUHAN POST & TELECOMM RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to solve the problem of how to improve the data backup capability of the perception layer of the Internet of Things

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  • Method and system for data increment backup of sensing layer of Internet of Things
  • Method and system for data increment backup of sensing layer of Internet of Things
  • Method and system for data increment backup of sensing layer of Internet of Things

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Embodiment Construction

[0048] The data incremental backup method of the Internet of Things perception layer provided by the present invention is implemented in the following manner:

[0049] Step 1: Each piece of sensor detection data is automatically assigned a unique data aggregation index Index_ID, and the system data log file is managed through the data log index tree with the data aggregation index Index_ID as the key; each sensor is assigned a unique The node aggregation index Node_ID manages the node incremental log files of each sensor through the incremental log index tree with the node aggregation index Node_ID as the key.

[0050] Step 2: Use the node aggregation index Node_ID as the key to search the incremental log index tree to obtain the node of the corresponding sensor on the incremental log index tree, and update according to whether the identifiers of the last two detection data of each node are different Corresponding nodes of the incremental log index tree, the incremental log in...

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Abstract

The invention discloses a method and a system for data increment backup of a sensing layer of the Internet of Things. The method comprises the following steps of: distributing a unique node clustered index Node_ID to every sensor, and automatically distributing a unique data clustered index Index_ID during detection data generation of every sensor; searching an incremental log index tree with the node clustered index Node_ID as a key to obtain a node of the corresponding sensor on the incremental log index tree, and updating according to the comparison results of two groups of recent detection data of every node, wherein an AVL (approve vendor list) structure is adopted by the incremental log index tree; searching a data log index tree with the data clustered index Index_ID as a key to obtain a node of the corresponding sensor on the data log index tree, and writing detection data into a data log file, wherein a B plus structure is adopted by the data log index tree. Online backup can be performed during operation, continuous operation of the Internet of Things can be ensured, and the speed of inquiry of data increments can be improved greatly.

Description

technical field [0001] The invention relates to a wireless sensor network, in particular to a data incremental backup method and system for the sensing layer of the Internet of Things. Background technique [0002] As the core of the sensing layer of the Internet of Things, the wireless sensor network undertakes the heavy responsibility of data detection, collection and transmission. Due to the particularity of wireless sensor networks, in practical applications, the following risks are often encountered: [0003] Natural hazards—such as floods, rain and snow, etc.; [0004] Man-made risks—such as environmental pollution, man-made damage, etc.; [0005] Technical risks—such as hardware failures, software errors, power failures, etc. [0006] The above man-made or natural reasons will cause the paralysis of the wireless sensor network or the operation failure of a single sensor, resulting in the loss of detection data with important scientific research value and economic v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F17/30H04L12/24
Inventor 许守明别剑曹非非向智宇许德玮
Owner WUHAN POST & TELECOMM RES INST CO LTD
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