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Toxic Gas Tracking Method Based on Virtual Node Walking in Wireless Sensor Networks

A wireless sensor and virtual node technology, applied in network topology, wireless communication, electrical components, etc., can solve the problems of boundary node redundancy, low energy efficiency, and low boundary positioning accuracy, and achieve the effect of saving energy

Active Publication Date: 2019-02-15
HOHAI UNIV CHANGZHOU
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  • Claims
  • Application Information

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Problems solved by technology

[0014] The purpose of the present invention is to solve the shortcomings of the current poisonous gas monitoring and tracking methods, such as insufficient boundary positioning accuracy of targets and low energy efficiency caused by the redundancy of boundary nodes, and proposes a high positioning accuracy, energy Efficient Toxic Gas Monitoring and Tracking Solution

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  • Toxic Gas Tracking Method Based on Virtual Node Walking in Wireless Sensor Networks
  • Toxic Gas Tracking Method Based on Virtual Node Walking in Wireless Sensor Networks
  • Toxic Gas Tracking Method Based on Virtual Node Walking in Wireless Sensor Networks

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] Such as figure 1 As shown, taking node 1 as the local node, we can see that its neighbor nodes include nodes 2, 3, 4, 5, 6, and 7. In the network initialization phase, node 1 and neighbor nodes send data packets to each other, and each node establishes the following information according to the received data packet information of neighbor nodes. figure 1 The local information table shown in - NIDT table. The elements contained in the NIDT table are the IDs, coordinates, and state values ​​of neighboring nodes. These values ​​correspond to each other and are stored in a specific order (clockwise or counterclockwise). Taking node 1 as an example, in its NIDT table, node 2 is the initial node, and it is stored in a clockwise order. The election of the initial node can be arbitrary, and whether it is stored clockwise or counterclockwise does not affect the genera...

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Abstract

The invention relates to a toxic gas tracking method based on virtual node migration in a wireless sensor network, comprising three stages: (1) a toxic gas boundary node rough recognition stage: nodes cooperate with each other, an information packet is broadcasted in a one-jump communication range, a local information table is established according to the information in the information packet, and candidate boundary nodes are judged according to the local information table; (2) a toxic gas boundary node fine recognition stage: the nodes not beneficial to target boundary positioning are deleted from the candidate boundary nodes determined in the previous stage, and the effective boundary nodes are retained maximally; and (3) a boundary node information uploading stage: a plurality of representative nodes are selected, and the information of all the effective boundary nodes is gathered and reported to a base station together. Monitoring and tracking of poisonous gases is realized. The transmission capacity of boundary information is reduced effectively. Energy consumption of tracking is reduced. The network life cycle is prolonged. The method is of great practical application value.

Description

technical field [0001] The invention belongs to the field of wireless multimedia sensor networks, and in particular the invention relates to a method for monitoring and tracking poisonous gas by using a wireless sensor network. The specific utilization realizes the monitoring and tracking of the whole target only by monitoring and tracking the nodes on the boundary of the target. Background technique [0002] In recent years, with the development of sensing manufacturing technology and wireless communication technology, wireless sensor networks (wireless sensor networks, WSNs) have been widely used in military and civilian fields, and the monitoring and tracking of continuous objects is the most common one. one of the application fields. Sequential targets are often distributed over a very large area and may spread, grow in size, or split into multiple continuous targets, such as poisonous gases, moving cattle, and forest fires. Different from the fixed size and small-scal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/10H04W84/18
CPCH04W40/10H04W84/18Y02D30/70
Inventor 韩光洁沈家伟江金芳刘立王皓
Owner HOHAI UNIV CHANGZHOU
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