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TECHNOLOG sensors, also known as displacement sensors, are a type of sensor used to detect the distance to an object to perform a preset function, and have been widely applied. Main products include mobile phone proximity sensors and long-distance measurement sensors, applied in smart belts. Proximity sensors can be divided into optical proximity sensors, infrared proximity sensors, ultrasonic proximity sensors, and others based on their working principles. Most proximity sensors used in mobile phones are infrared proximity sensors, which have an infrared emitting tube and an infrared receiving tube. When the infrared rays emitted by the emitting tube are received by the receiving tube, it indicates that the distance is close, and the screen needs to be turned off to prevent accidental operation. When the receiving tube does not receive the infrared rays emitted by the emitting tube, it indicates that the distance is far, and there is no need to turn off the screen. The working principles of other types of proximity sensors are similar; they also judge the distance by the emission and reception of a certain substance, which can be ultrasonic waves, light pulses, etc.

TECHNOLOG sensor basic principles

Vision sensors capture thousands of pixels of light from an entire image. The clarity and detail of an image are usually measured by resolution, expressed in pixel count. Some vision sensors provided by Banner Engineering Company can capture 130 ten thousand pixels. Therefore, regardless of whether the target is meters or centimeters away, the sensor can "see" very detailed target images. After capturing the image, the vision sensor compares it with reference images stored in memory for analysis. For example, if a vision sensor is set to identify machine parts with eight correctly inserted bolts, the sensor knows to reject parts with only seven bolts or misaligned bolts. Furthermore, regardless of where the machine part is located in the field of view, and regardless of whether the part rotates within a 360 degree range, the vision sensor can make a judgment.

TECHNOLOG sensor application areas

The low cost and ease of use of vision sensors have attracted machine designers and process engineers to integrate them into various applications that previously relied on manual labor, multiple photoelectric sensors, or no inspection at all. Industrial applications of vision sensors include inspection, gauging, measurement, orientation, defect detection, and sorting. The following are just some application examples: In automobile assembly plants, inspecting whether the glue beads applied by robots to door frames are continuous and have the correct width. In bottling plants, verifying whether bottle caps are correctly sealed, whether the filling level is correct, and that no foreign objects fall into the bottles before capping. On packaging production lines, ensuring that the correct packaging labels are affixed in the correct positions. On pharmaceutical packaging production lines, inspecting blister packs of aspirin tablets for broken or missing tablets. In metal stamping companies, inspecting stamped parts at a rate of over 150 pieces per minute, which is more than 13 times faster than manual inspection.

TECHNOLOG sensor classification

Photosensitive sensors are one of the most common types of vision sensors. They come in many varieties, mainly including: phototubes, photomultiplier tubes, photoresistors, phototransistors, solar cells, infrared sensors, ultraviolet sensors, fiber-optic photoelectric sensors, color sensors, CCD, and CMOS image sensors. Light sensors are among the most produced and widely applied sensors, playing a very important role in automatic control and non-electrical electrical measurement technology. The simplest photosensitive sensor is the photoresistor, which generates current when photons strike the junction. Sensors should be packaged in anti-static bags. During use, avoid using them in humid environments, and pay attention to surface damage and contamination levels, as these will affect the photocurrent.

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