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An evaluation method of elevator operation health based on car acceleration signal analysis

A technology for elevator operation and evaluation methods, which is applied in the identification of patterns in signals, transportation and packaging, and measuring devices. It can solve problems that have not been seen in research reports, improve comfort, prevent major safety accidents, and ensure safety and reliability. running effect

Active Publication Date: 2020-12-18
ZHEJIANG UNIV
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  • An evaluation method of elevator operation health based on car acceleration signal analysis
  • An evaluation method of elevator operation health based on car acceleration signal analysis
  • An evaluation method of elevator operation health based on car acceleration signal analysis

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples.

[0045] The present invention is illustrated by taking the historical operation data of an elevator in a community in Hangzhou, Zhejiang as an example. The elevator is equipped with an acceleration sensor with a sampling frequency of 100 Hz. The original operating acceleration signal is as follows: image 3 (a) shown.

[0046] Such as figure 1 As shown, the present invention is an elevator running health evaluation method based on car acceleration signal analysis, and the specific steps are as follows:

[0047] (1) Elevator normal operation data selection: select the acceleration signal corresponding to the operation process without any fault label from the historical database of the elevator, and perform abnormal value cleaning on the selected one, that is, preprocessing operations such as outlier point elimination are preprocessed Aft...

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Abstract

The invention discloses an elevator running health evaluation method based on car acceleration signal analysis. The invention aims at the problem that the current elevator lacks real-time and accurate elevator operation health evaluation standards. The present invention makes full use of the car acceleration signal reflecting the elevator vibration situation, collects the elevator car acceleration in the actual running process in real time, and uses the method of wavelet modulus maximum value noise reduction and detrending to obtain the vibration signal closely related to the elevator running performance , and then select a number of characteristic variables as evaluation indicators, and finally determine the scoring function combined with a number of evaluation indicators to give the quantitative evaluation results of various aspects of elevator operation health. This method realizes the timely and quantitative evaluation of the elevator's comprehensive operation health, and can effectively grasp the changes in the elevator's operating performance. A valuable reference can prevent some major safety accidents and ensure the safe and reliable operation of the elevator.

Description

technical field [0001] The invention belongs to the technical field of elevator operation health evaluation, in particular to an elevator operation health evaluation method based on car acceleration signal analysis. Background technique [0002] With the continuous improvement of the level of urbanization in my country, housing construction continues to develop vertically under the condition of limited land resources, and the rising degree of aging has stimulated the demand for elevators in various buildings, which has led to a rapid increase in the total number of elevators in my country. According to the survey, the number of elevators in China has increased year by year from 2011 to 2018, and the growth rate has remained above 10%. By the end of 2018, the total number of domestic elevator registrations reached 6.2783 million units. It is estimated that the number of elevators in China will exceed 10 million in 2023. At the same time, the daily use of many elevators is al...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/00G01H17/00G06K9/00
CPCB66B5/00G01H17/00G06F2218/06G06F2218/10
Inventor 赵春晖李泽华
Owner ZHEJIANG UNIV
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