Light curtain

Category：Light curtain
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Release time：2016/09/27
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Detailed introduction

Elevator light curtain

The elevator light curtain is to protect the safety of the elevator door device made by photoelectric induction principle, applicable to all lift, protect the safety of passengers out of the elevator. The elevator light curtain is composed of three parts of infrared transmitter installed in the elevator door on both sides and the receiver and special flexible cable. The need for environmental protection and energy saving, lift more and more has saved the power box. Some brands of screen due to poor ability to resist electromagnetic interference, but also have to must use the power box. But with the popularity of the concept of green elevator, power free box screen is a trend. Because the process of 220V to 24V is necessary to lose a lot of energy.

There are a number of light transmitter infrared emission tube, under the control of MCU, transmitting and receiving tube in turn, an emission light emitted by a plurality of hair head receiving, forming multiple scan. Continuous scanning car door area through the top-down, forming a dense infrared protective screen. When any one of the light rays are blocked, can not be achieved due to the photoelectric conversion screen, determine occlusion, so an interrupt signal output.

The interrupt signal can be a switch signal, or a high or low level signal. The control system receives the signal to the screen, immediately open output signal, the car door shut down and stop reverse open, until the passengers or leave the obstacle warning area after the elevator door can be closed properly, so as to achieve the purpose of safety protection, which can avoid clamping elevator accidents.