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Industrial wireless sensing network and communication method based on distributed coordinated frequency

A technology of wireless sensor network and communication method, which is applied in the field of communication based on distributed cooperative frequency management technology, can solve problems such as limited cost and power consumption, and achieve strong real-time performance, strong network adaptability, and good resistance to the same frequency band interference effect

Inactive Publication Date: 2008-09-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0009] In order to solve the problems of limitation, cost and power consumption in the prior art, the present invention provides an industrial wireless sensor network and a communication method based on distributed cooperative frequency, realizing frequency collision avoidance and frequency agility functions to avoid interference

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  • Industrial wireless sensing network and communication method based on distributed coordinated frequency
  • Industrial wireless sensing network and communication method based on distributed coordinated frequency
  • Industrial wireless sensing network and communication method based on distributed coordinated frequency

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Embodiment Construction

[0026] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0027] like figure 1 As shown, the present invention provides a schematic structural diagram of an industrial wireless sensor network, which includes: a sensor node 1, which is used to automatically search for an available channel during the handshake phase, and select a new operating frequency when the channel is unavailable, through Distributed cooperative channel switching to avoid interference to collect on-site data; Sink node 2 communicates with the sensor node 1 for automatically searching available channels during the handshake phase, and selects a new operating frequency when the channel is unavailable, Interference avoidance through distributed cooperative channel switching; and industrial Ethernet 3, communicating with the Sink node 2, for transferring the field data collected by the sensor node 1 to o...

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Abstract

The invention relates to an industrial wireless sensor network. The industrial wireless sensor network comprises a sensor node, an Sink node and a wireless information backbone network. The invention also relates to a communication method based on distributed cooperative frequencies and is characterized in that the sensor node and the Sink node can automatically search workable working channels at a handshake stage and the sensor node collects data packet in a workable working channel and sends the data packet to the Sink node; when the sensor node receives no answering signals from the Sink node and the resending of the data packet is timed out, the sensor node changes the frequency to select a new workable working channel for sending the data packet. Therefore, complex networking protocol is spared in the industrial wireless sensor network and the communication method based on distributed cooperative frequencies of the invention and good performance of resisting to the interference by a same frequency band is obtained.

Description

technical field [0001] The present invention relates to an industrial wireless sensor network, especially an industrial wireless sensor network working in the 2.4GHz ISM (ie industry, science, medicine) frequency band, and a distributed collaborative frequency management system used in this industrial wireless sensor network Technology communication methods. Background technique [0002] In the wireless sensor network, many sensors communicate with each other, process and transmit information through wireless communication. The network integrates sensor technology, embedded computing technology, distributed information processing technology and communication technology. to the desired user. [0003] This networked smart sensor based on wireless technology enables the data on the industrial site to be directly transmitted, published and shared on the network through a wireless link. Wireless communication technology can provide high-bandwidth wireless data links and flexib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L29/08H04B1/707H04W16/14H04W48/16
Inventor 黄本雄闵玉堂袁珺戴彬
Owner HUAZHONG UNIV OF SCI & TECH
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