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Infrared safety protection system and method for lift car roof space operation

A technology for safe operation and protection system, applied in the field of elevators, can solve hidden dangers, safety problems such as manual switching of the car top inspection switch, and achieve the effects of preventing malfunction, eliminating potential safety hazards and protecting personal safety.

Inactive Publication Date: 2017-08-29
GUANGZHOU RECH ELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to disclose an infrared elevator car top space operation safety protection system and method, which solves the problem of hidden safety hazards in manually toggling the car top maintenance switch

Method used

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  • Infrared safety protection system and method for lift car roof space operation
  • Infrared safety protection system and method for lift car roof space operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 with figure 2 The illustrated embodiment is an infrared elevator car roof space operation safety protection system, which includes a thermal infrared human body induction sensor 10 located on the car roof 20, a maintenance relay KV and an elevator main control system. The thermal infrared human body induction sensor includes a first pin 1, a second pin 2 and a third pin 3, the first pin 1 is connected to 24V voltage, and the second pin 2 is grounded. The maintenance relay comprises a first normally open contact 41, a second normally open contact 42 cooperating with the first normally open contact 41, a third normally open contact 43, a fourth normally open contact coordinating with the third normally open contact 43 The contact 44 and the first drive coil 45 are opened. The first pin 1 of the thermal infrared human body induction sensor is connected to the first normally open contact 41, and the second normally open contact 42 of the inspection relay...

Embodiment 2

[0030] Utilizing the safety protection system for the operation of the infrared elevator car top space in Embodiment 1, the method for protecting the safety of the operation of the infrared elevator car top space in Embodiment 2 is now described, including:

[0031] S1. When the human body enters the car roof, the thermal infrared human body induction sensor senses the human body's specific wavelength infrared rays (that is, the infrared rays with a wavelength of 9UM ~ 11UM). When the third pin 3 outputs 24V voltage, the first coil contact 451 of the first driving coil 45 The voltage is 24V, the first drive coil 45 drives the first normally open contact 41 to connect with the second normally open contact 42, and the third normally open contact 43 is connected to the fourth normally open contact 44; at this time, the elevator main control system The input terminal JX of the sensor senses 24V voltage to transmit the signal sent by the thermal infrared human body induction sensor ...

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Abstract

The invention discloses an infrared safety protection system and method for lift car roof space operation. The system adopts the structure comprising a thermal infrared human body induction sensor and overhaul relays, no special action is required before an overhaul person enters a roof, once a lift landing door is opened, the thermal infrared human body induction sensor senses human body infrared rays in specific wavelengths, the overhaul mode of a lift is enabled immediately, and the operation cannot be forgotten. The condition that the body of the overhaul person is cut by the lift due to accidental starting of the lift after the overhaul person enters the roof is prevented, the personal safety of the overhaul person is really protected, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an infrared elevator car top space operation safety protection system and method. Background technique [0002] Before maintenance personnel enter the car roof inspection of the elevator car, they need to manually toggle the car roof inspection switch to put the elevator into the inspection mode. In this setting method, the maintenance personnel forget to operate the maintenance switch on the car top, and the elevator is still in the automatic running state after the personnel enter the car top. When an elevator receives an instruction to run, the maintenance personnel have the safety risk of being cut by the elevator. Hidden danger. Contents of the invention [0003] The object of the present invention is to disclose an infrared elevator car top space operation safety protection system and method, which solves the problem of hidden safety hazards in manually toggling the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00
CPCB66B5/0025B66B5/005
Inventor 曹雄锋潘明坚陶方明
Owner GUANGZHOU RECH ELEVATOR