Toxic gas monitoring and tracking method based on breathing mechanism in wireless sensor network

Abstract

The invention relates to a method for realizing the monitoring and the tracking on the toxic gas boundary by a wireless sensor network. The method comprises three stages including: (1) a toxic gas boundary identification stage: nodes cooperate each other, information packets are broadcasted in a hop communication range, and whether the self is a boundary node or not is judged according to the state information of nodes in the information packets; (2) a representative node selection stage: several representative nodes are selected from all of the current boundary nodes, the information of all boundary nodes is fused and is reported to a base station in a unified way; and (3) a toxic gas tracking stage: the diffusion rule of toxic gas in the current environment is found by using the cooperation between the nodes, the dynamic change of the boundary nodes is used for simulating the change of the toxic gas boundary, and the effective tracking on a target is realized. The method has the advantages that the monitoring and the tracking on the toxic gas can be realized, the accuracy of the target boundary tracking is greatly improved, in addition, the information transmission quantity is effectively reduced, the tracking energy consumption is reduced, and the network life cycle is prolonged.

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 only realizes the monitoring and tracking of the whole target by monitoring and tracking the nodes on the boundary of the target. Background technique [0002] In recent years, with the development of sensor manufacturing technology and wireless communication technology, wireless sensor networks (wireless sensor networks, WSN) 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 areas. 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-scale c...

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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 method, which is not high enough in the boundary positioning accuracy of the target, and proposes an energy-efficient solution with high positioning accuracy, good real-time performance, and comprehensive consideration of weather factors. Toxic gas monitoring and tracking solution

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