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Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain

A light curtain system and elevator technology, which is applied in optical device exploration, elevators in buildings, transportation and packaging, etc., can solve the problems of cable disconnection, high cost and poor reliability of horizontal detection light curtains, and achieve reliability enhancement, Avoid cable breakage, high safety effect

Active Publication Date: 2010-08-25
HANGZHOU OPTIMAX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide two vertical elevator light curtain systems to solve the problems of high cost, poor reliability and easy cable breakage in the existing horizontal detection light curtains
[0009] Another object of the present invention is to provide a vertical elevator light curtain detection method to solve the problems of high cost, poor reliability and easy cable breakage in the existing horizontal detection light curtain

Method used

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  • Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain
  • Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain
  • Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain

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Effect test

Embodiment 1

[0035] Please refer to FIG. 3 , which is a schematic diagram of a light curtain structure of the vertical elevator light curtain system of the present invention. In this embodiment, five infrared ray emitting units 31 are installed on the upper part of the elevator car door, and seventeen infrared ray receiving units 32 are installed on the lower part of the elevator car door, and the infrared rays emitted by each infrared ray emitting unit 31 will be received by multiple infrared ray receiving units. 32 received, thereby forming a light curtain in the area of ​​the elevator doors.

[0036] During use, when the infrared rays are blocked so that one or some infrared receiving units 32 cannot receive them, it means that there are passengers entering and exiting the elevator or there is an object blocking the elevator door at this time, and these infrared receiving units 32 will transmit the infrared rays. The working status information of the light curtain is transmitted to the ...

Embodiment 2

[0039]Please refer to FIG. 4 , according to the principle of reversibility of the optical path, compared with the first embodiment, the positions of the infrared emitting unit and the infrared receiving unit are exchanged in this embodiment. In the present embodiment, five infrared ray receiving units 42 are installed on the upper part of the elevator car door, and seventeen infrared ray emitting units 41 are installed on the lower part of the elevator car door, and each infrared ray receiving unit 42 will receive the signals sent by a plurality of infrared ray emitting units 41. Infrared rays, thereby forming a light curtain in the area of ​​the elevator doors.

[0040] The working process and advantages of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0042] Please refer to Fig. 5, in the present embodiment, three infrared ray emitting units 51 are installed on the upper part of the elevator car door, seventeen infrared ray receiving units 52 are installed on the lower part of the elevator car door, and the infrared rays sent by each infrared ray emitting unit 51 will be All infrared receiving units 52 receive so that a light curtain is formed in the area of ​​the elevator doors.

[0043] Since the infrared emitting unit 51 in this embodiment has a large light divergence angle, the infrared emitting unit 51 is required to have a relatively high luminous power. Compared with Embodiment 1 and Embodiment 2, since each infrared emitting unit 51 covers a wide area, this embodiment has a very high light curtain density.

[0044] Corresponding to the above-mentioned light curtain system, the present invention also proposes a vertical elevator light curtain detection method, as shown in Figure 6, which includes the following steps:...

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Abstract

The invention discloses a longitudinal elevator light curtain system and a method for detecting a longitudinal elevator light curtain. In the invention, the longitudinal elevator light curtain system comprises at least three infrared emitting units (receiving units), a plurality of infrared receiving units (emitting units) and a signal processing module, wherein the infrared emitting units are arranged on the upper part of an elevator-cabin door; the infrared receiving units are arranged on the lower part of the elevator-cabin door for receiving the infrared rays which are emitted by the infrared emitting units and forming a light curtain in the region of the elevator-cabin door (the same effect can be achieved by the vertical exchange of the emitting ends and receiving ends according to the principle that the optical path is reversible); and the signal processing module is connected with all the infrared emitting units and all the infrared receiving units for controlling the time sequence in which the infrared emitting units emit the infrared rays and reading induction signals of the infrared receiving units to judge the working state of the light curtain. The longitudinal elevator light curtain system and the method for detecting the longitudinal elevator light curtain have the advantages of low cost, high reliability and long service life.

Description

technical field [0001] The invention relates to the technical field of elevator light curtains, in particular to a low-cost and high-reliability vertical elevator light curtain system and a vertical elevator light curtain detection method. Background technique [0002] The elevator light curtain is a safety protection device that prevents passengers or goods from being caught when the elevator automatically closes the door. It uses the high-speed scanning of multiple sets of infrared emitting and receiving units to detect obstructions in the protection area and provide signals to the upper control equipment. [0003] Most of the elevator light curtains currently available in the market are horizontal detection light curtains, please refer to Figure 1, which is a top view of the horizontal detection light curtain installed in the elevator. Infrared ray emitting unit 11 and infrared ray receiving unit 12 are respectively installed at left and right two elevator car doors 13 p...

Claims

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Application Information

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IPC IPC(8): B66B13/26G01V8/20
Inventor 彭威威陈良谢波
Owner HANGZHOU OPTIMAX TECH
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