The system comprises two light curtains, one light curtain detects an object in the horizontal direction, the other light curtain detects the object in the vertical direction, and when thin transparent glass is located between elevator doors, due to the fact that the thickness of the transparent plate in the horizontal direction is small, the transparent plate can not be damaged, and the transparent plate can not be damaged. The offset of light is small, the infrared receiving end of the first light curtain possibly receives infrared rays, at the moment, the first light curtain judges that no object exists, the second light curtain is detected in the vertical direction, the thickness of the transparent plate in the vertical direction is larger, the infrared rays penetrate through the transparent plate after being emitted, and the light rays are greatly refracted; therefore, the infrared receiving end of the second light curtain cannot receive the infrared rays, so that objects are detected, and the problem that when thin glass is carried to enter an elevator, the infrared rays penetrate through the glass, the receiving end can also smoothly receive the infrared rays, and consequently the elevator cannot recognize the glass is solved.
本发明公开了一种电梯光幕识别透明板状物的系统及电梯设备,包括两个光幕,一个光幕从水平方向上对物体进行检测,另一个光幕从竖直方向上对物体进行检测,当有很薄的透明玻璃位于电梯门之间时,由于水平方向透明板厚度小,光线的偏移量小,第一光幕的红外接收端也有可能接收到红外线,此时第一光幕判定没有物体,而第二光幕是从竖直方向检测的,由于竖直方向透明板的厚度更厚,红外线在发射后穿过透明板光线将发生较大折射,从而使得第二光幕的红外接收端接收不到红外线从而被检测出有物体,从而避免了当搬运厚度薄的玻璃进入电梯时,红外线将玻璃穿透,接收端也可以顺利接收红外线,导致电梯无法识别的问题。
System for recognizing transparent plate-shaped object through elevator light curtain and elevator equipment
一种电梯光幕识别透明板状物的系统及电梯设备
2023-03-14
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
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