Elevator parking braking device and control method thereof
Dual-motor coaxial integrated heavy-load vertical power wheel and unmanned forklift applying same
Magnetic railing ruler belt breakage detection device
Elevator safety system and elevator safety control method
Method and system for monitoring elevator running state and elevator part state
Elevator emergency braking method, system and device and medium
Elevator starting torque calculation method and elevator
Detection method for load entering and exiting from lift car
Data acquisition device for building fire-fighting potential safety hazards