Sensor node fault classification alarm method and device based on spatial correlation

A sensor node, spatial correlation technology, applied in services, instruments, transmission systems, etc. based on a specific environment, can solve the problems of fault type segmentation, insufficient fault feature distinction, insufficient basis for manual repair, etc., to improve accuracy. with the effect of timeliness

Active Publication Date: 2019-09-20
TONGJI UNIV
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Problems solved by technology

[0004] However, the existing wireless sensor node fault detection methods are difficult to subdivide the fault types, mainly because the fault characteristics are not distinguished enough, which makes the basis for subsequent manual repair insufficient.

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  • Sensor node fault classification alarm method and device based on spatial correlation
  • Sensor node fault classification alarm method and device based on spatial correlation
  • Sensor node fault classification alarm method and device based on spatial correlation

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0040] The scheme of this application utilizes methods including space interpolation estimation, fault classification mechanism, and error judgment. Spatial interpolation estimation obtains the data of adjacent sensor nodes, uses the spatial correlation of sensor data, considers randomness and structural characteristics to design a spatial interpolation method, estimates the real value of each sensor through cyclic calculation, and then calculates the difference between the read value and the estimated value. the difference between. The fault classification mechanism judges the senso...

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Abstract

The invention relates to a sensor node fault classification alarm method and device based on spatial correlation, and the method comprises the steps: S1, obtaining the data of each sensor, and obtaining a sensor data column; s2, based on the data of the adjacent sensors of the sensors to be detected, estimating the real value of each sensor through a cyclic calculation mode; s3, obtaining respective deviation values; s4, judging whether a measured value of the data of the sensor to be detected exists or not, if yes, executing the step S5, and otherwise, outputting a first alarm signal; s5, judging whether the deviation value is greater than a first set threshold value or not, if yes, outputting a second alarm signal, and otherwise, listing the sensor into a first set; and S6, for the sensors in the first set, judging whether the deviation value of a single sensor is obviously different from that of other sensors or not, and if yes, outputting a third alarm signal for representing a sensor data error. Compared with the prior art, the method has the advantages of improving the alarm accuracy and the like.

Description

technical field [0001] The invention relates to a node fault classification and alarm method, in particular to a sensor node fault classification and alarm method and device based on spatial correlation. Background technique [0002] A wireless sensor network is composed of wireless sensor nodes with the capabilities of perception, processing, storage and communication, and forms a wireless network in a self-organizing manner through node cooperation. Wireless sensor networks can deploy various sensor nodes in various monitoring areas, use sensors to sense a series of information in the monitoring area in real time, such as temperature, humidity, acceleration, structural status and other environmental information, etc., and transmit data to The monitoring center has been widely used in many fields such as military detection, environmental monitoring, and structural monitoring. In most wireless sensor network applications, due to the large number of wireless sensor nodes and...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04L12/24H04W24/04G01D18/00H04W4/38
CPCG01D18/00H04L41/0681H04W4/38H04W24/04
Inventor李刚何斌沈润杰朱忠攀周艳敏王志鹏徐寿林
OwnerTONGJI UNIV