In the field of industrial sorting, high-precision CCD color sorters and industrial-grade NIR sorting systems are often compared. As a brand that has been deeply engaged in color sorting technology for 20 years, HTsorter combines industry practice with cutting-edge technology to analyze the core differences and application scenarios of the two for you.
1.Detection principle: color recognition vs. molecular analysis
CCD color sorters are based on visible light imaging technology and capture the surface color and shape characteristics of objects through red, green and blue primary color sensors. For example, Japan's Satake's Evo RGB model uses a full-color CCD camera that can identify tiny color differences of 0.16×0.2mm and accurately sort surface defects of almonds, coffee beans and other particles.
NIR (near-infrared) sorters detect the chemical composition of materials through the interaction of infrared light with the molecular vibration characteristics of substances. For example, the SSM color sorter can be equipped with a high-performance InGaAs sensor, which can accurately remove plastics and glass through molecular differences even if the color is the same as the raw material.
Applicable scenarios:
CCD is more suitable for high-precision color sorting (such as sorting mixed-color particles in PET fragments);
NIR is good at handling foreign objects with similar colors but different materials (such as pesticide residues or plastic fragments in food).
2. Comparison of technical advantages
|
Features |
CCD color sorter |
NIR sorter |
|
Resolution |
Pixel-level recognition (such as 2048 linear array CCD) |
Molecular-level material distinction |
|
Anti-interference ability |
Clean environment required (dust affects imaging) |
Adapt to dusty and humid environments |
|
Function expansion |
Can be combined with AI algorithm to optimize sorting logic |
Support multi-spectral analysis (such as moisture detection)
|
Typical cases:
HTsorter CCD models can achieve 99.9% blue and green bottle cap sorting accuracy in plastic recycling;
HTsorter NIR system is used for nut processing, which can remove moldy particles at high speed without affecting the production line speed.
3. Collaborative application and maintenance points
Complementary scenarios: Some high-end models (such as SSM color sorters) are equipped with CCD and NIR dual sensors at the same time. CCD is used to remove color abnormal particles first, and NIR is used to remove material foreign matter, achieving "double insurance".
Maintenance differences:
CCD requires regular lens cleaning and color calibration (such as the automatic sensitivity setting function of Evo RGB);
NIR system pays more attention to light source stability, but almost no contact debugging is required.
HTsorter's solution
For different industry needs, we provide:
Customized CCD sorting solution: suitable for color-sensitive fields such as food and jewelry;
Industrial-grade NIR system: designed for complex environments such as recycling and minerals, supporting batch removal of inorganic impurities;
Mixed sorting model: combining CCD+NIR technology to meet the dual needs of high-end customers for precision and efficiency.