An elevator door lock bypass device and its control method

Abstract

The invention discloses an elevator door lock bypass device and a control method thereof. The elevator door lock bypass device comprises a first processing unit, a second processing unit and a door lock bypass unit, wherein the first processing unit and the second processing unit are connected and are respectively connected with position sensors of doors of an elevator. The two ends of a door lock switch are connected with the first processing unit and the second processing unit through a first door lock high-voltage input module and a second door lock high-voltage input module respectively. The door lock bypass unit comprises a first relay. The input end of the first relay is connected with the IO port of the first processing unit, and the first processing unit controls working of the first relay. The two ends of the door lock switch are connected with a movable contact and a normally open contact of the first relay respectively. Only when the signals received by the first and second processing units are coincident can the door lock bypass unit work. By means of the two processing units, the accuracy of signal monitoring is ensured, and the reliability of the elevator door lock bypass device is improved.

Description

technical field [0001] The invention relates to the technical field of elevator equipment safety, in particular to an elevator door lock bypass device and a control method thereof. Background technique [0002] Elevator is a symbol of vertical transportation of material civilization and a complex transportation equipment of mechatronics, which involves many scientific fields such as electronic technology, mechanical engineering, power electronic technology, microelectronic technology, electric drive system and civil engineering. With the rapid development of social economy, the use of elevators is becoming more and more common. It has transitioned from being used in commercial buildings and hotels to being used in office buildings, residential buildings, shopping malls and other places, and the requirements for elevator functions are also constantly increasing. , its design requires high stability and safety. [0003] The elevator door lock circuit refers to a circuit forme...

AI Technical Summary

Problems solved by technology

However, door locks may fail due to the increase in service life and other factors. It is possible that when all the landing doors and car doors of the elevator are closed, a certain door lock switch is disconnected. At this time, due to the door lock circuit If there is no conduction, the elevator will stop running. If there are people in the elevator or the elevator needs maintenance to descend to a certain floor, timely and rapid control will not be possible, which will bring obstacles to the safe operation of the elevator.

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