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Down-hole node energy-saving method based on hotspot areas

A technology for hotspot areas and nodes, applied in the direction of reducing energy consumption, advanced technology, network planning, etc., can solve the problems of wasting power and shortening the network survival time, and achieve the effect of saving energy, shortening the network survival time, and improving the survival time.

Inactive Publication Date: 2015-09-02
CHINA UNIV OF MINING & TECH
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an energy-saving method for downhole nodes based on hotspot areas, so as to solve the problem that the sensor nodes continuously monitored by the existing non-hotspot area sensors still need to be powered on, which not only wastes power, but also shortens the survival time of the network.

Method used

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  • Down-hole node energy-saving method based on hotspot areas
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  • Down-hole node energy-saving method based on hotspot areas

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Embodiment 1

[0020] Embodiment 1: Downhole node energy-saving method based on hotspot areas: by making statistics on downhole hotspots, determine the hotspots in the time period, and make statistics on the conversion between hotspots, and use the Markov process to calculate each hotspot The transfer probability between them, through the energy-saving method, realizes the control of turning on the nodes in the hot spot area and closing the nodes in the non-hot spot area; the transfer of the hot spot area is described by the Markov process, and the transfer probability is obtained by counting the transfer of the hot spot area in an underground area;

[0021] The downhole node energy saving method of the Markov process is:

[0022] Step 1, time T 0 Observe the current hotspot area and get the next node π(0);

[0023] Step 2. Time Calculate π(1) by comparing the maximum selection probability, comparing the hotspot areas of one or N hotspot areas with the maximum selection probability, and o...

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Abstract

The invention provides a down-hole node energy-saving method based on hotspot areas, and belongs to energy-saving methods for a down-hole wireless sensor network. The down-hole node energy-saving method based on the hotspot areas includes: statistics of the down-hole hotspot areas is conducted, the hotspot areas in a period are determined, the statistics of the conversion between the hotspot areas is conducted, the transition probability of the hotspot areas is calculated by the adoption of a Markov process, and the control of the opening of the hotspot area nodes and the closing of non-hotspot area nodes is realized via the energy-saving method. Non-hotspot areas are areas in which a few miners are distributed at present or even without any personnel, multimedia sensor nodes of the hotspot areas need to be mainly monitored, nodes of the non-hotspot areas can be partly closed on the premise of keeping connectivity, the energy of the nodes is wasted by the monitoring of the down-hole non-hotspot areas, the sequence of the hotspot areas is discovered so that the nodes of the non-hotspot areas are closed, the energy of the wireless sensor nodes is saved, and the survival time of a down-hole wireless multimedia network is increased.

Description

technical field [0001] The invention relates to an energy-saving method for an underground wireless sensor network, in particular to an energy-saving method for an underground node based on a hotspot area. Background technique [0002] At present, miners in coal mines, especially in some areas, are not evenly distributed anywhere in the area, but there are hot spots and non-hot spots in the covered area for a period of time, and the hot spots are the areas where the current miners gather , the non-hotspot area is an area where miners have few or no personnel at the current time, and the sensor nodes in the non-hotspot area will continue to monitor, and the sensor nodes that are continuously monitored still need to be powered on, which not only wastes power, but also shortens the survival of the network. time. Contents of the invention [0003] The purpose of the present invention is to provide an energy-saving method for downhole nodes based on hotspot areas, to solve the...

Claims

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Application Information

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IPC IPC(8): H04W16/22H04W52/02
CPCH04W16/22H04W52/0206H04W52/0258H04W52/0274H04W84/18Y02D30/70
Inventor 陈伟周军娜唐志博李鸣王珂
Owner CHINA UNIV OF MINING & TECH
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