Method and system for positioning wireless sensor network

A wireless sensor and network positioning technology, applied in the field of sensor networks, can solve the problems of calculation process error, low precision of positioning method, complex application environment, etc., and achieve the effect of improving accuracy

Inactive Publication Date: 2012-06-27
SUZHOU UNIV
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Problems solved by technology

[0004] However, the inventor found through research that in the positioning method in the prior art, in the process of calculating the distance according to the received signal sent by the anchor node, the calculation process of the actual position coordinates of the node to be positioned is based on the distance between the anchor node and the node to be positioned The distance is calculated, but

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  • Method and system for positioning wireless sensor network
  • Method and system for positioning wireless sensor network
  • Method and system for positioning wireless sensor network

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The invention discloses a wireless sensor network positioning method, which is used to solve the problem of relatively large errors when calculating the nodes to be positioned using the existing technology. The schematic diagram of the working process is as follows figure 1 shown, including:

[0042] S1. Obtain the first distance between the node to be positioned and the anchor node sending the wireless signal according to the wireless signal received by the...

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Abstract

The invention discloses a method and a system for positioning a wireless sensor network. The method comprises the following steps that: after a first distance between a node to be positioned and an anchor node is calculated, a preset quantity of anchor node sub-combinations are constructed; after a second distance between the anchor node and the node to be positioned is calculated, the anchor node sub-combination which has a smallest deviation sum and the deviation sum in an allowed range is selected as a destination anchor node sub-combination; and the final position coordinates of the node to be positioned are calculated through the destination anchor node sub-combination. By the method and the system provided by the invention, the anchor node sub-combination with the smallest deviation can be selected, and measurement data with large errors can be effectively eliminated, so the positioning accuracy of the node to be positioned can be effectively improved.

Description

technical field [0001] The invention relates to the field of sensor networks, in particular to a wireless sensor network positioning method and system. Background technique [0002] Wireless Sensor Networks (WSN, Wireless Sensor Networks), referred to as the sensor network, is a computer network composed of many spatially distributed automatic devices. In the sensor network WSN, there are a large number of sensor nodes, and each sensor The nodes have the functions of sensing, communication, and calculation, and are used to monitor the physical or environmental conditions of different locations, and realize the monitoring of parameters such as temperature, humidity, pressure, and strain. However, during the monitoring process, if there is no position information corresponding to the monitored information, the monitored information will become useless information. Therefore, it is very important to determine the location of nodes in the network, which is the basis for the lar...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W84/18H04L29/08
Inventor 郑建颖张红梅秦梦阳黄艳汪一鸣
Owner SUZHOU UNIV
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