Application of Infrared in Color Selection

With the increasing intensity of quality control by processing enterprises, infrared has begun to be used in the color sorting industry, and has been more and more favored in the sorting and quality grading of impurities. Among them, the infrared sensor made of high-end InGaAs material is highly sensitive to the moisture content on the surface of the material, and combined with AI intelligent recognition technology, it can easily remove all kinds of malignant impurities.

The core technology of intelligent infrared color sorter

1Near infrared + true color image acquisition system

The infrared Intelligent Rice Color Sorter Machine includes a near-infrared CCD image acquisition system and a color CCD image acquisition system;

The near-infrared CCD image acquisition system realizes the acquisition of near-infrared information of materials, greatly expands the spectral application range of the laser sorting machine, and realizes the effective sorting of some infrared-sensitive materials;

The color CCD image acquisition system realizes the acquisition of three color information of material red, green and blue, with the perception ability of the human eye, and the selection of materials is more realistic;

2 Flexible and variable light source configuration

Infrared color sorter includes color LED lighting system and near-infrared wide-spectrum lighting system;

The color LED lighting system can choose different spectral lighting for different raw materials, the contrast of the main features, and the acquisition of more material information.

The LED lighting system with heat dissipation has long life, low energy consumption and good performance;

The near-infrared wide-spectrum lighting system adopts a light source, with uniform and bright lighting, low energy consumption and stable performance.

3 Image processing algorithm, the rejection rate (bring-out ratio)

According to the material characteristics, the shape and color combination algorithm is used; for complex color materials, the color space sorting after HSV transformation is adopted, which is more intuitive and more intuitive.

Image acquisition system + intelligent image processing algorithm + high nozzle system = high rejection rate

4 high solenoid valve

Using high solenoid valve, high frequency, long service life, extremely low air consumption, ensuring large output of the machine, low take-out ratio, low failure rate and low energy consumption;

According to the characteristics of large and small particles of raw materials, solenoid valves of different sizes are used.

5 Simple operation, easy to learn and use

Simple optical system design, advanced automatic correction system, combined with the designed human-machine interface, greatly simplifies the complexity of machine debugging and use, makes the operation simple, and makes the machine easy to learn and use.

The core advantages of infrared sorting machine are as follows:

1. Wide range of application: In addition to the color optical system that can be used to achieve color sorting, the near-infrared optical system can also be used to achieve the sorting of some infrared sensitive materials, which are some materials that cannot be sorted by ordinary color optical systems. It greatly expands the spectral application range of the color sorter.

2. Added shape selection function: According to the characteristics of materials, the image processing algorithm combining shape and color is adopted, and shape sorting of materials is successfully realized by extracting shape features such as circularity, straightness, perimeter and area.

3. Transmissive color-adjustable background light: The transmissive background plate is used to replace the traditional reflective background plate, which simplifies the system and improves the stability. The RGB color adjustable background light is used to replace the red, green and blue reflector. In addition to the three colors of red, green and blue, it can also realize various color background lights through color mixing, which enriches the variety of colors.

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