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Abnormal data filtration method for interference elimination of automatic data acquisition system

A data acquisition system and abnormal data technology, applied in the direction of data acquisition and recording, can solve the problems of abnormal data, troubles, and noise data that cannot be truly reflected, and achieve the effects of reducing impact, ensuring timeliness, and overcoming limitations

Active Publication Date: 2013-02-13
SHANGHAI TONGYAN CIVIL ENGINEERING TECHNOLOGY CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, multiple links of the automatic data acquisition system, especially the sensor link and data acquisition link, are susceptible to interference from various external environments on the job site, including electric fields, magnetic fields, vibration, temperature, humidity, etc., resulting in abnormal data, that is, noise
These noisy data cannot truly reflect the information we need to know on the spot
If these noisy data are used for field data analysis without filtering, it will cause great trouble
This is also the problem that most data acquisition systems are facing now, and this problem also creates obstacles for the application and promotion of automatic data acquisition systems

Method used

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  • Abnormal data filtration method for interference elimination of automatic data acquisition system

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Embodiment Construction

[0052] An abnormal data filtering method for eliminating interference in an automatic data acquisition system. The automatic data acquisition system includes four basic parts: a sensor network, a lower computer, an upper computer, and a communication network. figure 1 shown.

[0053] Data acquisition is realized by the data acquisition module as the lower computer together with the sensor network; the data acquisition module and the sensor network together constitute the data acquisition front end, and the data acquisition can be performed independently without the upper computer; no matter what kind of communication network is used In this way, the data acquisition module is always connected to the host computer; when the connection is disconnected, the data acquisition module actively initiates a connection to the agreed port of the host computer, and keeps trying until the connection is established.

[0054] The data acquisition module has the ability to work independently,...

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Abstract

The invention discloses an abnormal data filtration method for interference elimination of an automatic data acquisition system. The method is characterized in that: the automatic data acquisition system comprises four basic parts, namely a sensor network, a lower computer, an upper computer and a communication network; abnormal data is judged and rejected on the basis of the upper computer; a data acquisition plan is set and initiated by the upper computer; data acquired by a data acquisition module is transmitted to the upper computer in real time, and the upper computer filters the abnormal data; the abnormal data is filtered by a method of comparing a predicted value with an actually-measured value obtained by trend analysis; and factors in varied aspects of the actually-measured value of acquired data, the predicted value, variable quantity and variable direction are taken into comprehensive consideration. By adoption of the method, the automatic data acquisition system can effectively and automatically realize the filtration of interfered data and greatly reduce influence of noisy data on analysis.

Description

technical field [0001] The present invention relates to an automatic data acquisition system based on dynamic coefficient exponential smoothing method, in particular discloses an abnormal data filtering method for eliminating interference in an automatic data acquisition system (including data acquisition, network transmission, and data processing), which is mainly used in automatic monitoring field. Background technique [0002] The automatic data acquisition system uses sensor technology, information technology, and network technology to make data acquisition alive in the traditional sense, and truly realizes real-time, remote, automatic, and real data acquisition. The networking industry brings huge development opportunities. [0003] However, multiple links of the automatic data acquisition system, especially the sensor link and data acquisition link, are susceptible to interference from various external environments on the job site, including electric fields, magnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/40
Inventor 朱合华刘学增朱爱玺
Owner SHANGHAI TONGYAN CIVIL ENGINEERING TECHNOLOGY CORP LTD
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