3-D wireless sensor network coverage method based on probability

Abstract

The invention discloses a method for covering three-dimensional wireless sensor networks based on probability. In the three-dimensional monitoring, the wireless sensor networks exist contradiction between the intrinsic uncertainty and the fact that system is expected to have relatively strong fault-tolerant capability and robustness, and most of the current coverage control methods are limited to two-dimensional plane, and only 1-coverage can be provided. The invention adopts grids to model three-dimensional areas to be monitored, and an iterative and greedy enlightenment method is used for confirming the position of nodes of the sensor in the grids; the placement of each node is completed in each iteration till the total number of the nodes reaches the preset upper bound or till each node reaches k-coverage by probability T. The method of the invention has relatively high reliability and robustness, and can be used for special environment with weak signal transmission capability such as the water environment for monitoring; meanwhile, the method of the invention is also suitable for situations in which local areas in the whole area to be monitored raise priority requirement for coverage (giving priority to coverage and monitoring accuracy).

Description

technical field [0001] The invention relates to the technical field of environment monitoring using a wireless sensor network, in particular to a probability-based three-dimensional wireless sensor network K-coverage control method. Background technique [0002] Wireless Sensor Networks (WSNs) is a new information acquisition technology emerging with the development of wireless communication technology, embedded computing technology, sensor technology and micro-electromechanical technology. It is widely used in military, automotive electronics, industrial control, environmental monitoring, medical Sanitation, smart home and other fields have good application prospects, especially in event monitoring and target tracking in unattended or harsh environments. [0003] In a monitoring system based on wireless sensor networks, each sensor node collects local information around itself, processes it and transmits it to the sink node, and the sink node summarizes the local data colle...

AI Technical Summary

Problems solved by technology

Coverage considers two issues: (a) whether the initial arrangement of sensor nodes covers the entire target area; (b) whether these nodes can accurately and completely collect the information of the target area

[0008] However, the coverage of the above methods only reaches 1-coverage, that is, each target grid point in the monitoring area is only monitored by one sensor node.

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