System for escalator and automatic moving pavement

Abstract

The invention discloses a system for an escalator and an automatic moving pavement, which comprises all safety switches for detecting deletion of steps, chain fracture of chains, strap breakage of hand straps, skirt panels and the like, an escalator main control device, a plurality of auxiliary control devices and communication buses for connecting all the control devices, wherein a group of contacts of all safety switches is connected with the escalator main control device, when any one safety switch is turned off, the power supply of an escalator driving device is cut off so as to ensure safety. Another group of contacts of the safety switches is connected with the auxiliary control devices for detecting the state of the safety switches. Each auxiliary control device is connected with the main control device through the buses for carrying out data communication. The invention is capable of conveniently carrying out failure detection and control, is easy for system expansion and has low manufacturing cost.

Description

technical field [0001] The invention relates to an escalator and moving walk system. Background technique [0002] Escalators and moving walks include many safety switches such as safety switches to detect missing steps, safety switches to detect broken chains, safety switches to detect broken handrails and safety switches to detect missing apron panels etc., the existing escalator safety system adopts these safety switches in series to form a safety loop, and the safety loop manipulates the relay contactor (or contactor) to process the power delivered to the main circuit of the escalator. The disconnection of any switch in the safety circuit will cut off the power supply of the main circuit of the escalator. [0003] Since the safety circuit is in series, when the safety circuit is disconnected, maintenance personnel cannot know exactly which switch is faulty, and can only find out the fault by manually testing in the safety circuit. As the truss height (or length) of esc...

AI Technical Summary

Problems solved by technology

However, the electronic safety components are not directly constituted in the safety circuit of the escalator, but are realized through wireless communication or bus communication, and the response of the escalator will lag

In addition, to make the safety of electronic safety components equal to the safety of safety switches, it is necessary to design the electronic safety components according to the requirements of safety circuits, and at the same time increase redundancy considerations. Obviously, the complexity of safety circuits with CPUs is far greater than that of safety switches. Safety switch, at the same time, the cost will be increased due to the complexity and redundancy of the design, and the goal of low cost cannot be achieved

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