Distance automatic measuring method of wireless network nodes

A technology of node distance and automatic measurement, applied in radio wave measurement system, measurement device, network topology, etc., to achieve the effect of suppressing measurement error and strong adaptability

Inactive Publication Date: 2016-02-24
HENAN POLYTECHNIC UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The present invention aims at the problem of the automatic measurement method of the wireless network node distance, and the purpose is to provide a method for automatically measuring the distance between network nodes that can adapt to changes in the network environment

Method used

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  • Distance automatic measuring method of wireless network nodes
  • Distance automatic measuring method of wireless network nodes
  • Distance automatic measuring method of wireless network nodes

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Embodiment Construction

[0014] like figure 1 Shown is the flow chart of the automatic measuring method of wireless network node distance of the present invention, comprises: establishes ZigBee communication network, anchor node periodically broadcasts own ID and location information, and mobile node saves the average RSSI of the anchor node participating in node distance calculation value, establish groups of anchor nodes participating in node distance calculation, and calculate the ranging factor of each group A and attenuation factor n , using the ranging factor A and attenuation factor n Calculate the distance between anchor node members and mobile nodes.

[0015] The specific implementation details of each step are as follows:

[0016] Step S1: establishing a ZigBee communication network;

[0017] Step S2: The anchor node periodically broadcasts its own ID and location information;

[0018] Step S3: The mobile node saves the average RSSI value of the anchor node participating in the node d...

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Abstract

The invention relates to a distance automatic measuring method of wireless network nodes. The method comprises the steps that: a ZigBee communication network is established; anchor nodes periodically broadcast IDs and position information of their own; a mobile node stores an RSSI average value of the anchor nodes participating in node distance calculation; groups of the anchor nodes participating in node distance calculation are established; a distance measuring factor A and an attenuation factor n of each group are calculated; and the distance measuring factor A and the attenuation factor n are utilized to calculate distances between the anchor node members and the mobile node. By adopting the method provided by the invention, the adaption capability to the wireless network environment change is increased, the distance measuring error is lowered, and the positioning precision of the wireless network nodes is improved.

Description

technical field [0001] The invention relates to the technical field of ZigBee wireless networks, in particular to an automatic measurement method for distances between wireless network nodes. Background technique [0002] The accurate positioning of ZigBee wireless network nodes is an important topic in the field of wireless network technology, and the accurate measurement of the distance between nodes is the basis for the realization of positioning algorithms. According to the relationship between the received signal strength RSSI of wireless communication and the communication distance, the distance between the mobile node and the anchor node can be calculated by using the received signal strength RSSI, and then the position coordinates of the mobile node can be calculated by using the trilateration calculation method, so that Realize the positioning of wireless network mobile nodes. [0003] Our research found that the key factor of the calculation formula used in the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/06G01S5/10H04W84/18H04W88/02
CPCG01S5/06G01S5/10H04W84/18H04W88/02
Inventor 李泉溪赵帅鹏苏百顺张保定武文琪李若舟
Owner HENAN POLYTECHNIC UNIV
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