Elevator safety precaution system

A safety early-warning system and elevator technology, applied in the field of elevator control, can solve the problems of safety threats to passengers and maintenance personnel, elevators unable to provide passenger safety warnings, etc., and achieve the effects of large span, energy saving, and small size
CN103449276AActive Publication Date: 2013-12-18HITACHI ELEVATOR CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI ELEVATOR CHINA
Publication Date
2013-12-18

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Abstract

The invention relates to an elevator safety precaution system comprising a landing door opening / closing detecting device, a lift car position detecting device, a car outer sensing device, a precaution device and a power device independent to the elevator. The landing door opening / closing detecting device is used for detecting whether the landing door is open or closed or not, the lift car position detecting device is used for detecting whether the lift car is near to the landing door or not, the car outer sensing device is used for detecting approaching condition of people outside the car, the precaution device is used for receiving detecting signals from the landing door opening / closing detecting device, the lift car position detecting device and the car outer sensing device, and judging whether to send precaution signals or not according to the detecting signals, and the power device independent to the elevator is used for supplying power to the precaution system. The elevator safety precaution system can precaution risks of early landing door unlocking and of entering unlocked landing door when monitoring elevator maintenance, so that life safety of passengers and maintenance staff can be guaranteed, and states of the car outer sensing device can be switched over intelligently, long and unnecessary power start is saved, and independent external power source is utilized to prevent losing monitoring capability due to power failure of the elevator.
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Description

technical field

[0001] The invention relates to the technical field of elevator control, in particular to an elevator safety early warning system. Background technique

[0002] In recent years, elevator safety accidents have occurred frequently. It is reported that it is a common elevator safety accident to enter the hall door by mistake and fall down the shaft. Such cases generally mean that the car is in the state of installation or maintenance, and passengers may enter the unlocked hall door without knowing it, or manually open the hall door. If the car is not nearby at this time, the passenger will fall down the shaft causing extremely serious harm. The lessons of blood have made the hidden dangers of elevator safety arouse widespread concern in the society. At present, domestic reflections on such safety accidents mainly start with the education of passengers on safe rides, and in order to solve the problem of reducing well accidents, product optimization is still nee...

Claims

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