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Working principle of diffuse reflection photoelectric sensor
Release time:
2024-03-06 00:00
Source:
Diffuse reflection sensor is a kind of sensor which is widely used in industrial automation, object detection and other fields. Its working principle is mainly based on the diffuse reflection phenomenon in optical principle. The operation principle of the diffuse reflection type sensor will be described in detail below.
1. diffuse reflection phenomenon
When the light hits the surface of the object, part of the light will be reflected back at a certain angle, this phenomenon is called reflection. If the surface of the object is rough and uneven, the light will scatter in all directions, forming diffuse reflection. Diffuse reflection type sensor is the use of this principle of work.
2. working principle
Diffuse sensors contain a transmitter and receiver inside. The emitter emits light of a certain wavelength, and after irradiating the surface of the object, the light is diffusely reflected. The receiver receives the reflected light and converts it into an electrical signal. The sensor determines the state of the object by detecting the change in this electrical signal.
When the light shines on the surface of the object, if the object is white or lighter, the reflected light is more; if the object is black or darker, the reflected light is less. Therefore, the sensor can determine the color, shape and other information of the object by detecting the intensity of the reflected light. In addition, if the distance of the object from the sensor changes, the reflected light will also change, and the sensor can judge the position of the object accordingly.
3. application
Diffuse sensors are widely used in industrial automation, such as material detection, product counting, and positioning of objects on production lines. In addition, it can also be used in automobile manufacturing, food packaging, pharmaceutical production and other fields to achieve the detection and control of objects.
4. features
The diffuse reflection sensor has the characteristics of simple structure, fast response and high reliability. It can accurately detect the color, shape, position and other parameters of the object, so it has a high value in practical applications.
Summary:
The diffuse reflection type sensor determines the state of an object by detecting the intensity of light reflection based on the diffuse reflection phenomenon. It has a wide range of applications and significant characteristics, and provides important technical support for industrial automation and object detection. Understanding the working principle and characteristics of diffuse reflection sensors will help to better apply and maintain such sensors and improve production efficiency and product quality.
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