Light curtains provide protection for workers around moving machinery by using infrared rays to create a visual warning when interrupted. They can also emit an audible warning and stop machinery. Light curtains offer additional protection over physical barriers and can be used in various environments. The cost has decreased since the 21st century.
Light curtains are devices designed to provide protection to people working around moving machinery. The idea behind this type of safety measure is that the light curtain serves as a visual warning when the light beams that make up the device are interrupted, causing an immediately perceptible change. With some models of the blind, an audio component is added, with an audible signal that sounds when the infrared rays are interrupted.
A basic configuration of the light curtain includes both a transmitter and a receiver that allow you to control the direction of the infrared rays that make up the curtain. When any type of solid matter, be it a moving machinery or a human being, breaks the connection between these two components, the nature of the rays changes color, serving as a sign that there is an increased possibility of danger. Along with the activity of the beams, some units are also equipped with a small receiver attachment that emits a warning sound such as a loud buzzing sound or a series of short bursts of sounds that are intended to alert both machine operators and others in the area that someone or something has passed in the immediate area of the moving car. There are also models of light curtains that can be configured to send direct signals to moving machinery when the beams are violated, causing the equipment to stop immediately.
One benefit of using a light curtain is that the approach helps minimize the need for physical barriers that would otherwise be required to provide the necessary protective barrier. Because you can easily see through the curtain, this approach is believed to offer additional protection over more traditional methods. This is because it is not possible to see through most types of solid barriers and be aware of what is happening on each side. With the light curtain it is possible to look through and see what movement is taking place and take appropriate evasive action, an advantage which can sometimes help further reduce the chances of injury to workers.
A light curtain can be used in virtually any environment that requires the use of moving equipment. This form of protection is useful in factories, warehouses and even some types of construction sites. While the cost of using a light curtain configuration was once quite prohibitive, that cost has decreased significantly since the turn of the 21st century. The added protection provided by this type of safety device can easily justify the expense and go a long way in making the occupational safety and health process within a business much easier to manage.
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