Online failure detection method for industrial wireless sensor network

Abstract

The invention relates to a network fault online detection method of an industrial wireless sensor, comprising the following steps that: a sensor node collects sensing data at a plurality of time points and uploads the sensing data to a network control management system to carry out centralized processing; the network control management system calculates the difference value between the data instability of the sensor node and the data instability of network data; moreover, the network control management system calculates the reliability sequence of the node according to the difference value between the data instability of the sensor node and the data instability of network data within an entire time quantum, and initially judges whether the sensor node is suspected according to the reliability value; on the basis of the result of the initial judgment and the reliability sequence, the network control management system calculates the uncertain status distribution density of the suspected sensor node and finally judges the failure of the sensor node according to the calculated distribution rule of the uncertain status of the suspected sensor node. The network fault online detection method provides a high-reliability and easy-implementation detection method of the industrial wireless sensing network.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an online fault detection method for industrial wireless sensor networks. Background technique [0002] Wireless sensor network (WSN) is a cutting-edge hot research field that is attracting international attention, involving highly interdisciplinary and highly integrated knowledge. Combining sensor technology, embedded computing technology, modern network and wireless communication technology, distributed information processing technology, etc., it can monitor, perceive and collect information of various environments or monitoring objects collaboratively in real time through various integrated micro-sensors, The information is sent wirelessly and transmitted to the user terminal through an ad hoc multi-hop network, thereby realizing the connection between the physical world, the computing world and the ternary world of human society. In a wireless sensor network...

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Problems solved by technology

[0005] In order to solve the problems of difficult detection and low reliability in the prior art, the purpose of the present invention is to provide a wireless sensor network fault online detection method to detect network node sensors and network operating status, so as to maintain the normal operation of the network and optimize network

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