Blueberry sorting faces the dual challenges of delicate fruits and diverse end-market requirements: fresh berries supplied to supermarket shelves must meet strict appearance standards; IQF (Individually Quick Frozen) berries require the removal of stems, leaves, and underripe or overripe fruits; while jam and juice processing demand uniform raw materials to ensure consistency in flavor and color. How to accurately channel different quality grades to the most suitable markets while maintaining high processing efficiency has become a key step for blueberry processors to enhance product added value.
The Legende HS Series is an intelligent vision-based sorting system tailored for this exact scenario. Equipped with high-resolution RGB (HR-RGB) VIS imaging technology and proprietary AI deep learning algorithms, it performs real-time scanning and surface feature analysis on blueberries. Paired with high-performance air ejector valves, it achieves high-precision rejection of defective berries and foreign material within milliseconds.
Empowered by AI-driven surface feature recognition, the system continuously learns from real production data, steadily improving its detection accuracy. This means the equipment's performance is not static after deployment; instead, it continuously adapts and improves as production data accumulates, delivering stable and reliable sorting performance. This enables blueberry processors consistently deliver batches with extremely low surface defect rates, reducing reliance on manual picking with reliable sorting performance, and ensuring that large-scale sorting of delicate fruits no longer conflicts with high-quality standards.
Technical Features
● Tailored Vision-Based Sorting System for Blueberry
✦ Compact Single-Belt Structure
Features a quick-install design with a small footprint and flexible deployment.
✦ High-Performance Vibratory Feeder
Evenly distributes blueberries into a single layer, effectively minimizing overlapping, and providing a stable material posture for high-precision detection.
✦ Easy-to-Clean Structural Design
Adopts food-grade stainless steel construction with sealed camera chamber and electrical cabinet, effortlessly handling high-humidity and complex processing environments.
✦ Integrated Self-Cleaning
Automatically cleans the glass of the camera chamber to continuously keep the scanning area clear. This reduces manual intervention and downtime for cleaning, ensuring continuous and stable equipment operation.
✦ Multi-Specification Model Portfolio
Offers belt widths of 300 mm, 600 mm, and 1200 mm, meeting diverse throughput requirements.
● AI Powered High-Precision Defect Inspection System
✦ High-Resolution RGB (HR-RGB) VIS Imaging
Clearly presents material surface features, providing reliable image input for AI algorithms to ensure the accuracy and stability of visual recognition.
✦ Proprietary AI Deep Learning Algorithms
Enhances surface feature recognition and supports model retraining with real-world production data, continuously improving the detection accuracy through deep learning.
✦ High-Intensity LED Illumination
Guarantees a constant imaging environment with clear and stable images, unaffected by external light changes, ensuring consistent detection results across different time periods and batches.
High-precision detection for various defects and foreign material based on surface features:
✩ Color grading: Separation by ripeness (dark/light blue/unripe) for uniform appearance
✩ Defect detection: Mold, shriveled, cracked, or scarred berries
✩ Foreign material removal: Stems, insects, plastic

● In-House High-Performance Air Ejector System
✦ Optimized Ejector Valve Design
Balances durability, response speed, and air consumption efficiency, maintaining stable performance even under long-term, high-frequency operation.
✦ High-Speed, High-Precision Ejection
Delivers millisecond-level response and precise material rejection, ensuring optimal sorting accuracy even under high-throughput conditions.
✦ Reduced Operating Costs
Significantly lowers the false reject rate, minimizing material waste from good products being incorrectly ejected, while optimizing air consumption to reduce overall operational expenses.
● 15-Inch Industrial Touchscreen Control System
✦ Intuitive Interaction
User-friendly human-machine interface (HMI) with multi-language support.
✦ One-Click Switching
Quickly recalls sorting parameters for different products.
✦ Comprehensive Remote Support
✩ Remote access and real-time monitoring
✩ Performance data dashboard
✩ Online expert diagnostics
✩ Interactive troubleshooting
Specifications
Belt Width
(mm)
Air Nozzle
Air Pressure
(MPa)
Air Consumption
(m3/min)
Voltage
Power
(kW)
Dimension
(mm)
Unpacked Weight
(kg)
Legende HS1
Legende HS2
Legende HS4
Specifications are approximate and subject to change without notice. Lauffer Vision reserves all rights for modifications.
Model
300
64
0.6~0.8
<1.2
220V~50/60Hz
2.6
3341×1700×1861
720
600
128
0.6~0.8
<2.4
220V~50/60Hz
3.2
3962×1880×1861
1047
1200
256
0.6~0.8
<4.8
220V~50/60Hz
3.9
3927×2600×1861
1145