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Historical operation data-based equipment alarm threshold calculation method

A technology of historical operation data and calculation methods, applied in the direction of calculation, alarm, computer parts, etc., can solve the problems of evaluating the operation status of equipment, not taking into account the operation of industrial field equipment, and difficult to adapt to equipment status evaluation, etc. Strong performance, realize automatic early warning of equipment failure, reduce false positives and false negatives

Inactive Publication Date: 2019-11-05
西安因联信息科技有限公司
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Problems solved by technology

This type of standard system has a wide range, most of which provide reference information, and do not take into account the actual operation of industrial field equipment, so that it is difficult to adapt to the status assessment of each equipment, that is, the standardized alarm threshold cannot evaluate the equipment according to the actual operation of the equipment Whether the operation status is abnormal

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  • Historical operation data-based equipment alarm threshold calculation method
  • Historical operation data-based equipment alarm threshold calculation method
  • Historical operation data-based equipment alarm threshold calculation method

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Embodiment Construction

[0039] The present invention is further described below in conjunction with accompanying drawing:

[0040] see Figure 1 to Figure 3 , a method for calculating a device alarm threshold based on historical operating data, comprising the following steps:

[0041] Step 1, collect the historical operation data of the equipment as the learning data set of the initial alarm threshold, the historical operation data includes vibration data and working condition parameters;

[0042] Step 2, preprocessing the historical operation data: remove the downtime data contained in the historical operation data, and remove the "outlier" data points in the historical operation data;

[0043] Step 3, calculation of historical data statistical indicators after preprocessing, the indicators include: data average value and data standard deviation;

[0044] Step 4, calculate the alarm threshold Alm by the data mean value and data standard deviation;

[0045] Step 5, monitoring and alarming of the m...

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Abstract

The invention relates to a historical operation data-based equipment alarm threshold calculation method. The method comprises the following steps that: step 1, the historical operation data of equipment are acquired; step 2, the historical operation data are preprocessed; step 3, the statistic indexes of the preprocessed historical data are calculated, wherein the indexes comprise a data average value and a data standard deviation; step 4, an alarm threshold value Alm is calculated through the data average value and the data standard deviation; and step 5, the actually-measured state parameterS of the equipment is monitored, the equipment gives out an alarm, and the alarm threshold value iteratively updated. According to the method of the invention the actual alarm threshold value of theequipment is determined based on the learning of the historical operation data of the equipment, so that automatic early warning against the faults of the equipment can be realized.

Description

technical field [0001] The invention belongs to the field of early warning of mechanical equipment, and in particular relates to a calculation method for an equipment alarm threshold based on historical operation data. Background technique [0002] In the field of mechanical equipment condition monitoring, it has long been a technical difficulty to evaluate the operating condition of equipment. It is a general method to evaluate the operating state of the equipment whether the characteristic parameters of the equipment state collected in real time are alarmed or not. At present, the method of judging equipment alarms is mainly the fixed threshold alarm method, that is, setting the alarm thresholds corresponding to different characteristic parameters of the equipment. When the actual measurement results exceed the alarm threshold, an alarm is triggered, indicating that the current operating status of the equipment is in an abnormal state. Most of the existing alarm threshold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/18G06K9/00
CPCG08B21/187G06F2218/02G06F2218/12
Inventor 胡翔田秦吕芳洲夏立印
Owner 西安因联信息科技有限公司
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