Control system for escalator

Abstract

The invention relates to an escalator control system, in which communication is realized by a pair of twisted-pair lines between a principal board and subordinate boards and by setting the principal board and the subordinate boards, wherein, the subordinate boards receive the nearby input signal and send the signal to the principal board through a CAN bus; an upper subordinate board and a lower subordinate board send the display information transmitted from the principal board to a key switch box to display; the principal board inspects the input signal, determines the output signal through logical operation, records the fault of the error signal and alarms; a starting point of a safety loop starts from the principal board, goes through a series of safety switches, connects the upper subordinate board and the lower subordinate boards nearby, goes through an end point of the principal board and returns to the principal board, the principal board checks the state of the safety loop and realizes control and detection of multiple functions of the escalator. The escalator control system, as an ideal substitute of the prior art, avoids laying transmission lines in large quantity and has the advantages of simple structure, reasonable layout, safe and reliable system operation and braking and effectively reduced production cost.

Description

technical field [0001] The invention provides an escalator control system, which belongs to escalator control and monitoring equipment. Background technique [0002] There are two technical solutions for escalator control panels currently on the market: [0003] One uses a programmable controller PLC, which is based on a general-purpose PLC and then programmed into an appropriate program. Because this technical solution uses the off-the-shelf PLC hardware, it can only realize basic logic functions, and cannot perform function detection such as setting of specific parameters, clock and fault records, and because all sensors are directly connected to the PLC, resulting in To lay a large number of very long transmission lines. [0004] The other is a technical solution using a single-chip microcomputer, generally using an 8-bit or 16-bit single-chip microcomputer as the main control unit. Due to the low speed of the single-chip microcomputer, few resources, and the need to e...

AI Technical Summary

Problems solved by technology

Other existing technologies cannot get rid of the need to lay a large number of very long transmission lines, or only simple control and detection functions

Images