基于MEMS加速度传感器的电梯运行特性检测

Detection of elevator running characteristics based on MEMS acceleration sensor

电梯运行特性检测是电梯乘运质量检测的重要内容,可用于定量评估电梯运行控制参数设置合理性。文中采用MEMS三轴加速度数字传感器和STM32高性能单片机开发出加速度数据采集装置,分析了加速度数据滤波方法,以及电梯最大速度、V95速度、最大加减速度、A95加减速度、最大加加速度、运行距离的计算方法。采用开发的装置和EVA-625乘运质量测试系统同时对某垂直客梯进行上行和下行过程运行特性参数进行了检测。结果表明,该电梯最大加减速度和A95加减速度均满足标准要求。两装置所测数据接近,开发的装置可实现电梯运行特性有效检测。

Elevator operation characteristic detection is an important part of elevator operation quality detection,which can be used to quantitatively evaluate whether the setting of elevator operation control parameters is reasonable.The acceleration data acquisition device was developed by using MEMS triaxial acceleration digital sensor and STM32 high-performance single chip microcomputer.The filtering method of acceleration data and the calculation methods of the maximum speed,V95 speed,maximum acceleration/deceleration,A95 acceleration/deceleration,maximum jerk and running distance of the elevator were analyzed.By using the developed device and EVA-625 running quality test system,the characteristic parameters of a vertical passenger elevator running up and down were detected simultaneously.Results show that the maximum acceleration and deceleration of the elevator and A95 acceleration and deceleration meet requirements of relevant standards.The measured data of the two devices are close,which indicates that the developed device can effectively detect the running characteristics of elevators.