Top Cloud-agri 4YL-2C-1A Intelligent Corn Grain Combine Harvester

Overview

The Top Cloud-agri 4YL-2C-1A Intelligent Corn Grain Combine Harvester is a self-propelled, two-row field-scale harvesting system engineered for precision agronomic research and seed production trials. Unlike conventional grain harvesters designed for bulk commercial farming, this instrument-class harvester integrates real-time grain mass measurement, moisture analysis, and volumetric density (test weight) determination into a single pass—enabling high-fidelity, plot-level yield quantification under controlled experimental conditions. Its operational principle combines mechanical threshing (via adjustable ribbed cylinder and concave assembly), pneumatic grain conveyance, and gravimetric sensing calibrated per ASTM D1557 and ISO 712 for moisture, while adhering to FAO-recommended protocols for small-plot yield estimation. Designed specifically for maize variety trials—including regional adaptation studies, comparative cultivar evaluations, and mechanized harvestability assessments—the 4YL-2C-1A delivers traceable, audit-ready data compliant with GLP-aligned field trial documentation standards.

Key Features

• Modular two-row corn header (adjustable row spacing: 500–600 mm; customizable cutting width up to 1.5 m) with hydraulic lift and height control for consistent stalk engagement
• High-torque turbocharged intercooled diesel engine (80–95 kW output) coupled with dual-drive options: mechanical transmission or hydrostatic drive for precise ground speed control (0–25 km/h)
• Adjustable threshing system featuring a ribbed cylinder equipped with stepless variable-speed transmission; concave clearance and bar spacing (20–40 mm) independently tunable for optimal kernel integrity
• Pneumatic grain conveying architecture incorporating a cyclonic separator, temporary storage bin, and side-mounted bagging station with support frame and air hose interface
• Integrated on-board weighing system (2.25–15 kg per plot range; ±10 g repeatability) synchronized with capacitance-based moisture sensor (10–40% w.b.; ±0.5% @ 10–27%, ±1% @ 27–40%) and volumetric density module (±10 g/L accuracy)
• Ergonomic cab with climate control, LED field lighting, and multifunctional joystick interface for coordinated operation of header, threshing, cleaning, and data acquisition subsystems

Sample Compatibility & Compliance

The 4YL-2C-1A is validated for use with dent, flint, and semi-flint maize hybrids across diverse maturity groups and planting densities. It accommodates lodged crops via optional ear-lifting attachments and maintains kernel viability through low-impact threshing geometry and reduced impact velocity in the grain path. All electronic instrumentation—including the embedded industrial PC, load cell amplifier, and moisture sensor electronics—meets IEC 61000-6-2/6-4 electromagnetic compatibility requirements. Data logging conforms to ISO 22000 traceability principles and supports 21 CFR Part 11-compliant audit trails when deployed in GxP-regulated breeding programs. Calibration certificates for mass, moisture, and test weight modules are provided with each unit and align with national metrological verification standards (JJG 539, JJF 1171).

Software & Data Management

The onboard Linux-based field computer runs proprietary YieldTrak™ software (v3.2+), supporting both manual and GPS-assisted automatic plot boundary navigation. The software enables real-time visualization of yield maps, moisture gradients, and test weight distribution across experimental layouts. All raw sensor outputs—including timestamped weight events, moisture readings, and fan RPM—are stored in CSV-compatible structured format on internal SSD or removable USB media. Exported datasets include plot ID, geo-referenced coordinates (if external GNSS receiver integrated), ambient temperature/humidity, and operator-defined metadata fields. Software permits post-acquisition statistical aggregation (mean, SD, CV%), outlier detection, and direct export to R, SAS, or JMP for ANOVA and genotype-by-environment analysis.

Applications

• Maize variety registration trials requiring plot-level yield and quality metrics per OECD Seed Schemes guidelines
• Harvest index and grain quality trait mapping in QTL and GWAS studies
• Mechanical harvestability screening for new germplasm under varying lodging and moisture conditions
• On-farm research trials conducted by extension services and seed companies under IR-4 or NAPPB frameworks
• Calibration validation of proximal sensing platforms (e.g., drone-based NDVI or thermal imaging) against ground-truth yield data

FAQ

Is the 4YL-2C-1A suitable for official certification trials under national crop variety testing regulations?

Yes—its metrological specifications and data integrity features meet the minimum technical requirements outlined in the Chinese National Crop Variety Testing Guidelines (NY/T 1734-2009) and are accepted by provincial seed administration stations.

Can the machine operate autonomously without GPS guidance?

It supports fully manual operation with plot-triggered data capture; GPS integration is optional but recommended for spatially explicit yield mapping.

What maintenance intervals are recommended for the moisture sensor and load cells?

Moisture sensor calibration verification is advised before each trial season; load cells require annual recalibration using certified deadweight standards per ISO 376.

Does the system support integration with third-party farm management information systems (FMIS)?

Yes—CSV exports are schema-documented and compatible with AgLeader SMS Basic, Climate FieldView, and Granular via standardized import templates.