Development and Application of Vibration Comfort Detection Device for Escalator Based on MEMS Acceleration Sensor

Abstract

Vibration comfort is an important indicator for evaluating escalator riding experience. The measuring principle of vibration comfort of escalator step and armbands was analyzed. The calculation methods of vibration acceleration extraction, frequency meter weight, root mean square (RMS) and vector sum were summarized. A wireless triaxial acceleration data acquisition module was developed based on micro-electromechanical system (MEMS) acceleration sensor, MCU and high-speed WIFI module, and a vibration comfort detection application (APP) based on the Android operating system was developed. The calibrated detection device was applied to escalator field test. The results showed that the maximum vibration RMS and average RMS of the step and the armband on both sides can be quickly calculated, and the vibration comfort level can be divided, which provided important data reference for equipment maintenance.

Requirements analysis and overall design of escalator condition monitoring and early warning system

“…According to the structural characteristics of all parts of the escalator and the change mechanism of the running state after failure, the characteristic changes before and after failure can be captured by installing sensors. For the change of the running state of the driving host, the main driving shaft, the step chain tensioning device and other parts, the vibration signal is collected by vibration sensor 12 , and the vibration signal is analyzed according to the vibration analysis theory. When the armrest belt and the friction driving wheel slip due to poor matching, the temperature of the armrest belt will rise suddenly in a short time.…”