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

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...