1300480369

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1300480369 Application Field and Working Principle1300480369 or photoelectric sensors are widely used in a wide range of applications. The photoelectric sensors are non-contact type proximity sensors that are used to detect targets in industrial automation facilities. This type of sensors is often the primary means of sensing for the automation machine. They provide feedback information of targeted objects to the control and also protective limit sensing for the machine.The application fields of photoelectric sensors are diverse. In industry, photoelectric sensors are used for detecting object presence, size, position, and continuous motion. For example, they are used in automated production facilities on automated assembly lines detecting the presence of targeted object parts, determining the size of objects, making sure objects are in the correct position, and detection of continuous motion of objects on a conveyor belt. They are also used in robotics, machine vision systems and the like.In the home environment, photoelectric sensors are used for lighting control, security systems and Automated window shades. The lighting control have photo sensors that detects the presence of darkness and triggers the lights to be turned on. Security systems incorporate a whole plethora of sensors ranging from motion sensors and entrance sensors to camera based facial recognition systems and more. Automated window shades incorporate a photo sensor as well as temperature and weather sensors to adjust the window shading as needed to maintain comfort and reduce energy consumption.The working principle of photoelectric sensors is relatively simple. A beam emitter and a receiver is used together to create a sensing barrier between the two devices. The beam emitter can be either a visible or infrared light source. When the target interrupts or reflects this beam, an alarm or switching function is triggered. Photoelectric sensors also have adjustable settings such as beam width, pulse count, frequency, threshold, etc., which allows customizing the output according to the need of the application.There are two main types of photoelectric sensors, reflective and thru-beam. In the reflective type setup, the emitter and the receiver are in the same component. The beam is transmitted onto the target object and the reflected beam is detected by the receiver. This type of system is suitable for applications where the target is a flat, untextured surface that reflects light well.In the thru-beam type, the emitter and receiver are separate components. The beam passes between the two components and the object interrupting the beam triggers the output. This system is suitable for applications where the target is small, irregularly shaped, or textured surfaces that may not reflect light strongly.Overall, photoelectric sensors are versatile and widely used in many automation applications. They provide feedback information of the targeted objects to the control as well as protection limit sensing. Through adjustable settings, they can be customized to meet all sorts of needs from lighting control, security systems, Automated window shading and more.

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