Elevator running health degree evaluation method based on elevator cabin acceleration signal analysis

A technology for elevator operation and evaluation methods, which is applied to the identification of patterns in signals, transportation and packaging, measurement devices, etc., can solve problems that have not yet been reported in research reports, and improve comfort, ensure safe and reliable operation, and prevent major safety issues. effect of accident

Active Publication Date: 2020-02-11
ZHEJIANG UNIV
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[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 degree evaluation method based on elevator cabin acceleration signal analysis. The elevator running health degree evaluation method aims at solving the problem that a current elevator lacks real-time and accurate elevator running health evaluation standards. The elevator cabin acceleration signal reflecting the elevator vibration condition is fully utilized, the acceleration of the elevator cabin of the elevator in the actual running process is collected in real time, a vibration signal which is closely related to the elevator running performance is obtained by using the wavelet modulus maximum value noise reduction and de-trend method, then a plurality of characteristic variables are selected as evaluation indexes, and finally, a scoringfunction is determined to be combined with the plurality of evaluation indexes to give quantitative evaluation results of aspects of the elevator running health degree. According to the method, timelyand quantitative evaluation of the comprehensive operation health degree of the elevator is realized, the change condition of the operation performance of the elevator can be effectively mastered, onone hand, the comfort degree of the passenger can be effectively improved, on the other hand, valuable reference basis is provided for maintenance of the elevator, occurrence of some important safetyaccidents can be prevented, and safe and reliable operation of the elevator is guaranteed.

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...

Claims

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Application Information

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Patent Type & Authority Applications(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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