The “Mandarin Grading Machine” is an intelligent fruit sorting equipment that utilizes advanced photoelectric color sorting and grading technology, specifically designed for the automated quality inspection and grading of citrus fruits (such as oranges, tangerines, mandarins, etc.).
Mandarin Color Grading Machine Core Technology
Optical Imaging System
- High-resolution camera array: Uses multi-angle CCD/CMOS cameras to capture fruit surface features from 360°
- Multi-spectral imaging technology: Combines visible light and near-infrared spectral analysis to detect surface and internal quality
- Precise light source system: Specially designed uniform illumination system eliminates shadows and reflections
Color Sorting and Grading Mechanism
- Color recognition algorithm: Based on the HSV/RGB color model, accurately analyzes peel color uniformity and maturity
- Defect detection: Identifies surface defects such as spots, scars, sunburn, and diseases
- Size and shape analysis: Measures geometric parameters such as fruit diameter and roundness through edge detection algorithms
Mandarin Sorting Machine Grading Standards and Parameters
| Grading Dimension | Detection Parameters | Application Value |
| Appearance Color | Coloring area, uniformity, hue value | Judging maturity, market grade |
| Surface Quality | Defect type, area, location | Screening high-quality fruit, improving product value |
| Fruit Size | Diameter, volume, weight | Standardized specifications, standardized packaging |
| Shape Characteristics | Roundness, symmetry | Aesthetic evaluation |
Mandarin Color Grading Machine Advantages
- High Precision: Utilizing imported photoelectric sensors, the grading accuracy is ≥99%, capable of identifying subtle defects and color differences, ensuring consistent product standards.
- Fully Automatic: One machine can replace 8-12 workers, achieving automatic feeding, sorting, and unloading, operating continuously for 24 hours to meet the demands of large-scale harvesting seasons.
- Wide Applicability: Adjustable parameters make it suitable for various citrus fruits of different sizes and shapes (oranges, tangerines, mandarins, grapefruits) without the need for additional modifications.
- Durable and Easy to Maintain: Features a 304 stainless steel body (food-grade), core components from renowned brands, intelligent fault alarm system, low failure rate, and low maintenance costs.
- Easy Operation: Large touch screen with simple logic, easy to learn and use; 24-hour online technical support, operation manual, and video tutorials are provided.
- Customizable Standards: Grading standards (color/size/weight/defect level) can be customized according to target market needs, maximizing product value.
Mandarin Grading Machine FAQ
Q: What is the grading accuracy of the mandarin grading machine?
- A: The accuracy for obvious defects and size grading usually exceeds 95%. The accuracy for complex defects (such as slight brown spots) depends on the AI model training level.
Q: What defects can the mandarin grading machine detect?
- A: It can detect various surface defects such as insect damage, scars, rot, sunburn, chemical stains, and fruit rust. High-end models can also detect internal browning and peel separation.
Q: Can the mandarin grading machine sort different varieties of mandarins?
- A: Yes. Different sorting schemes for different varieties can be switched via software. The system’s AI model also needs to be trained or adjusted for different varieties.
Q: Can the mandarin grading machine grade by sugar content?
- A: High-end models are equipped with near-infrared (NIR) sensors for non-destructive testing and grading of internal quality such as sugar content and acidity.
Q: Can the mandarin grading machine be connected to existing washing and packaging lines?
- A: Yes. The equipment usually adopts a modular design and can be integrated with upstream and downstream equipment such as washing, drying, waxing, and packaging to form an automated production line.
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