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Energy management method for wireless network measurement

A technology of wireless network and energy management, applied in the field of energy management of wireless network measurement, can solve the problem that the effect of energy saving is not very good

Inactive Publication Date: 2008-02-27
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

[0004] Although the various modes mentioned above can solve the problem of saving energy to a certain extent, the effect of saving energy is not very good, and there is still the problem of improving energy saving efficiency

Method used

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  • Energy management method for wireless network measurement
  • Energy management method for wireless network measurement
  • Energy management method for wireless network measurement

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Embodiment Construction

[0051] The present invention will be further described below through the accompanying drawings and specific embodiments of the description.

[0052] As shown in FIG. 2 , the present invention performs energy management on network nodes including sensors, CPUs, memory, sensors and wireless communication modules. These modules have multiple energy modes, and network nodes can enter different sleep states. The energy consumption of the network node is determined by the corresponding sleep state and data transmission. Multiple sensors of each node need cooperative measurement to obtain the target position. After nonlinear least squares estimation, the measurement error is determined by the error ellipse. In the process of energy management, the particle filter algorithm predicts the next position of the target according to the existing measurement value of the target position. Using this predicted value, the sleep time of the network node can be estimated, so as to dynamically w...

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Abstract

This invention relates to an energy management method capable of using experienced information to layout sleep time of nodes and optimizing measurement and comunication energies based on the awaken state of nodes including: 1, a central node collects measurement information of each round of radio sensor nodes and computes the current position of a target to forecast its track, 2, when there is not target in a measurement region, the network is at the standby state, after a target enters into the region, a network node makes sure the shortest time the target entering into the region based on its forecast position and enters into a complete sleeping state in the shortest time period, 3, selecting a suitable node from being selected ones to finish actual measurement to minimize energy loss, 4, selecting part of nodes as the transfer nodes for transferring data packets to save communication energy.

Description

technical field [0001] The invention relates to the field of energy management for wireless network measurement, in which multiple nodes perform cooperative tracking on maneuvering targets, and in particular to an energy management method for wireless network measurement. Background technique [0002] A large number of intelligent nodes with sensing, processing and wireless communication functions can form a wireless network in a specific area to complete complex measurement tasks. It is worth noting that the network nodes are usually powered by batteries and are subject to energy constraints, so the energy management of wireless networks becomes a very important issue. The basic idea of ​​energy management is to shut down a device when not needed and wake it up when necessary. Therefore, it is necessary to design an effective node wake-up mechanism. [0003] Currently, there are many devices with multiple energy modes. For example, the StrongARM SA-1100 processor has thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/34H04B17/00H04W24/00H04W24/02H04W52/02
CPCY02B60/50Y02D30/70
Inventor 王雪马俊杰王晟毕道伟
Owner TSINGHUA UNIV
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