Safety light curtain and infrared lights are two common concepts in modern safety technologies. Although both are widely used in safety applications, key differences exist in terms of their principle and application. This passage talks about the disparity between the two to help readers better understand their connotation and application.
The safety light curtain is a kind of grating system that uses photoelectric sensors for monitoring, which is applied to detect and protect personnel or objects from being harmed by machines or equipment in dangerous areas. It consists of a pair of vertically placed transmitter and receiver, and realizes its function by emitting infrared light beams and monitoring whether they are blocked. When the beam is blocked, the light curtain will immediately trigger the safety system to stop the operation of the machine or equipment. The safety light curtain is widely used in the field of industrial automation, such as mechanical processing, assembly lines, etc.
However, infrared lights are a wavelength of light between visible light and microwaves. Unlike safety light curtains, infrared rays are not a kind of safety technology, but a form of electromagnetic radiation. The infrared sensors can measure the intensity of infrared radiation from the surface of objects. Infrared technology is widely used in many fields, such as communications, remote controls, infrared thermography, etc. In the field of safety, infrared technology plays crucial role in monitoring and detection, for example, in the intrusion alarm system, using infrared sensors to detect the thermal radiation of the human body to achieve the alarm function.
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