Design Of Elevator Running Curve Measurement And Analysis System

With the rapid development of the national economy and science and technology, the elevator has become an everyday essential transport. With such a huge lift market situation and future market expectations, in addition to improve elevator design, manufacture and installation quality, the elevator testing, inspection and maintenance together with routine monitoring has become increasingly important. In the elevator maintenance process, the data-accurate, user-friendly, standards-compliant measuring instruments will undoubtedly bring efficiency in related areas.This paper designs an elevator running curve measurement and analysis system based on triple-axis accelerometer, which could be widely used to measure, analyze and optimize the elevator running curve and to determine simple running fault. Based on a given system design, this paper implements specific design of the hardware, embedded software and PC software. Meanwhile, this paper completes some simple digital filters in the data processing such as median filter, a sliding mean filter and kalman filter. The corresponding implementation results of comparison and analysis are given. The system hardware includes a STM32 microcontroller unit based on ARM-Cortex M3 core, triple-axis accelerometer MPU6000 sensor unit, LCD display unit, infrared communication interaction unit, SD card data storage unit, and power and debug unit. Embedded software consists of STM32 on-chip peripherals driver software, MPU6000 sensor access driver software, infrared communication with LCD interactive software, SD card file system, and a digital filter. PC software is developed using C language on NI’s virtual instrument platform of Labwindows / CVI and uses the company’s NI VISA technology to access storage devices.This paper completed the design of hardware of PCB, embedded software and PC software. Test results shows the system is stable and reliable.