基于轿厢加速度解析的电梯运行健康度评价

An Evaluation Method of Elevator Running Health Based on the Analysis of Car Acceleration Signal

电梯正成为生产生活中不可缺少的组成部分,而由电梯引发的各类安全问题也正严重威胁着人们的生命财产安全。传统的电梯运行性能评价缺乏对电梯运行数据的充分利用与解析,难以对电梯健康度给出实时且有效的评价。针对这一问题,提出了一种基于轿厢加速度解析的电梯运行健康度评价方法。该方法深入分析了反映电梯运行质量的主要信号,即轿厢加速度数据,通过降噪和去趋势化处理,提取出有效的电梯振动信号,然后对振动信号进行时间窗划分,分别计算多个评价指标,最后代入评价函数得到综合得分,对电梯运行健康度给出实时、准确的评估,从而为后续电梯维保提供依据。

Elevators are gradually becoming an indispensable part of production and life. At the same time, all kinds of safety problems caused by elevators are also seriously threatening people’s life and property security.The traditional elevator performance evaluation methods lacks full utilization and analysis of elevator running data, so it is difficult to give real-time and effective evaluation of elevator health. In order to solve this problem,an evaluation method of elevator running health based on the analysis of car acceleration signal is proposed in this paper. This method deeply analyzes the main signal reflecting the elevator running quality, namely the car acceleration data. The effective vibration signal of elevators is extracted by denoising and de-trending. Then,the vibration signal is divided into time windows and several evaluation indexes are calculated respectively.Finally, the comprehensive score is obtained through the evaluation function, and the real-time and accurate evaluation of elevator running health is given. So as to provide a basis for the following maintenance and protection of elevators.