Node positioning method of wireless sensor network of smart power grid

A wireless sensor and network node technology, applied in wireless communication, network topology, wireless communication services, etc., can solve problems such as complex wireless environment, system positioning accuracy can not meet actual needs, immature RSSI positioning system, etc., to achieve cost and The effect of low power

Inactive Publication Date: 2016-07-27
STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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Problems solved by technology

[0004] However, due to the complexity of the underground wireless environment and the influence of various factors, the c

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  • Node positioning method of wireless sensor network of smart power grid
  • Node positioning method of wireless sensor network of smart power grid
  • Node positioning method of wireless sensor network of smart power grid

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] The present invention combines the characteristics of the underground electricity information collection system, first considers the basic RSSI positioning algorithm, at the node receiving end, considers the electromagnetic wave attenuation in the communication process, and adds electromagnetic wave correction to the receiving field strength, so that the positioning accuracy of the node is higher high. The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] The present invention provides a smart grid wireless sensor network node positioning method, comprising the following steps:

[0042] Use power line communication to set multiple fixed nodes, and determine the coordinate information of each fixed node according to the position of the fixed ...

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Abstract

The invention provides a node positioning method of a wireless sensor network of a smart power grid. The method comprises following steps of setting multiple fixed nodes as beacon nodes; sending positioning information to multiple surrounding beacon nodes by a mobile node of a wireless sensor network; obtaining the distances between the mobile sensor network node and the multiple fixed nodes through an RSSI algorithm according to the relationship of sending field intensity and corrected receiving field intensity; solving the coordinate information of the mobile sensor network node by using a trilateration method; and correcting the solved coordinate information of the mobile sensor network node by using a maximum likelihood method. According to the node positioning method of the wireless sensor network of the smart power grid provided by the invention, the method is applied to underground power node communication by using a wire and wireless hybrid communication mode, and the node positioning precision in hybrid communication of the heterogeneous network of the smart power grid can be improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless sensor network node positioning method of a smart grid. Background technique [0002] In the context of the smart grid, the power consumption information collection system shoulders the important tasks of automatic collection, efficient sharing and real-time monitoring of power consumption information. The communication network of the electricity consumption information collection system has the characteristics of many nodes and complex application scenarios. Sensor networks have the advantages of low power consumption, low cost, strong anti-interference, high flexibility, and short construction period, and have been widely used in power consumption information collection systems. A wireless sensor network is a network composed of sensor nodes with the ability to perceive environmental parameters, and is equipped with wireless transmission equipment for...

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Application Information

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IPC IPC(8): H04W64/00H04W4/04G01S11/06H04W84/18
CPCG01S11/06H04W4/04H04W64/003H04W84/18Y02D30/70
Inventor 付卫东唐如意臧志斌林大朋洪海敏王春梁丽华梁竞辉彭小东
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD
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