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Connected target coverage method based on adjustable perception radius probability sensor model

A sensor model, a technology of sensing radius, applied in sustainable communication technology, wireless communication, climate sustainability, etc., to reduce energy costs and improve network operation efficiency

Active Publication Date: 2019-09-17
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods based on fixed sensing radius models are no longer suitable for probabilistic sensor networks with adjustable sensing radius

Method used

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  • Connected target coverage method based on adjustable perception radius probability sensor model
  • Connected target coverage method based on adjustable perception radius probability sensor model
  • Connected target coverage method based on adjustable perception radius probability sensor model

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with accompanying drawing.

[0050] The invention mainly proposes a connected target coverage method based on a probability sensor model with an adjustable sensing radius. according to figure 1 The network schematic diagram of , the wireless sensor network used in the present invention is: in a 2D area scene of L*M size, M target points, N sensors and a sink point have been randomly deployed in advance. Each target point has the same coverage probability threshold ε. The working status of these N sensors needs to be scheduled so that the network can reduce the energy cost per unit time as much as possible while ensuring the target coverage threshold and network connectivity. Here, 200 sensors and 20 target points are deployed in a 100*100 area.

[0051] like figure 2 As shown, what the present invention uses is an omnidirectional adjustable perception radius probabilistic sensor model working in a...

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Abstract

The invention discloses a connected target K coverage method based on an adjustable sensing radius model. The method comprises the following steps: 1, constructing a network diagram according to position information of a sensor in a network; 2, finding out the shortest path from any sensor to the Sink and calculating the communication cost; 3, calculating a target point set which can be monitored by each sensor under each monitoring radius and does not meet a coverage threshold value; 4, calculating a candidate sensor set of each target point; 5, selecting a target point with the least candidate sensors; 6, selecting a coverage set for the target; 7, repeating the step 5-6, ending the algorithm until one connected coverage set is selected, and giving a state scheduling strategy of the sensor. According to the method, through a probability coverage mode, a monitoring mode of the sensor on a target in an actual scene is better simulated; according to the coverage method based on the adjustable sensing radius model, the energy cost of the network working in unit time is reduced, and the network operation efficiency is improved.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a connected target coverage method based on a probability sensor model with adjustable sensing radius. Background technique [0002] With the development of society and the advancement of science and technology, wireless sensor networks are more and more widely used in many fields such as military security and environmental monitoring. In complex 2D-like terrain target monitoring applications, such as forests, deserts, etc., wireless sensor nodes need to deploy sensor nodes in the form of random scattering to meet the monitoring of all target positions in the monitoring area. Random deployment reduces the deployment cost of the network, but also increases the difficulty of scheduling the working status of sensors. Therefore, the target coverage problem of wireless sensor network is a very important problem in the application of wireless sensor network monitoring. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/06H04W40/04H04W40/20H04W40/32H04W84/18
CPCH04W24/06H04W40/04H04W40/20H04W40/32H04W84/18Y02D30/70
Inventor 徐向华陈凛王然程宗毛
Owner HANGZHOU DIANZI UNIV
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