What is a color sensor?

A color sensor is a sensor used to identify and compare the surface color values of objects. It uses the three primary colors of red, green, and blue to compare the reflected signal with the RGB primary colors, in order to identify and compare the surface color of the target object. It is a sensor focused on color recognition and classification.

Meiji's ESE series color sensor combines color mode and color mode, based on the principle of RGB, capable of detecting small differences in grayscale values. Even colors with subtle differences in background color can be detected with fast processing speed; Widely used in automatic control systems to identify colors, detect color codes, or mark spots on materials.

In this issue, Xiaoming will share the application of color code sensors on equipment in various industries; Firstly, let's understand what is the color code mode and what is the color mode

The difference between color code mode and color mode of ESE series sensors

color index mode

Principle: Using the difference in emissivity of objects of different colors as the detection principle, identify and compare the grayscale of the target object surface, focusing on the grayscale difference and grayscale variation of color codes.

Detection object: Identify the grayscale of the surface color of the target object, but cannot distinguish different colors with the same degree of friendliness.

Function: By measuring the surface grayscale of an object as a single color dimension, the measured value is compared with the set threshold value to determine whether there is currently a color mark passing through, thereby helping the device system obtain the time and position of the color mark.

Application: Product packaging quality inspection, packaging material positioning

Color Mode

Principle: Using red, green, and blue as the primary colors, the reflected signal is compared with the RGB primary colors to identify and compare the color of the target object surface.

Detection object: High precision discrimination of the color of the surface of the object at the target location through the RGB ratio of reflected light.

Function: By high-precision measurement of the RGB values of the surface color of an object, the measured color value is compared with the set target "color" value to determine whether a specific color scale is currently passing through. This helps the device system obtain the time and location of the appearance of a certain color scale.

Application: Color identification of materials

① Color code mode - printing equipment

In the automated processing flow, color code sensors are mainly used for color detection and positioning of printed materials, precise control of printing register quality, ensuring color accuracy and consistency of printed materials, and real-time detection of printing color information; Based on the color signal extracted by the color code sensor, standardized, unified, and efficient production can be carried out based on electronic information.

② Color code mode - packaging equipment

In the packaging industry, color code sensors can detect color blocks of various colors, whether it is simple black and white markings or colorful patterns, they can be accurately recognized. Color code sensor is one of the indispensable and important components in packaging production equipment. Its function is to detect color markings on products or packaging materials, in order to accurately match the equipment for packaging control.

The Akusense color code sensor ESE series can reliably detect these marks to ensure correct positioning of the material, providing support for the next process (such as cutting/sealing/counting, etc.)

Here, using color code sensors can help the production line achieve precise control, greatly improving production efficiency and product quality.

For example, on the food packaging production line, color code sensors can help manufacturers track and detect printing marks, ensuring automatic alignment and accurate positioning of packaging bag patterns; It can also be used to detect the color of items such as labels and bottle caps to ensure product quality and consistency.

③ Color Mode - Printing Equipment

The color mode of Meiji ESE series sensors can recognize even slight color differences. It knows what black is in front of it and what white is in front of it;

It can quickly classify materials of different colors, and even small differences in color or differences in the depth of the same color will be reflected in the data detection results, thus achieving the recognition and classification of material colors;