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This research aims to develop a wireless monitoring system for accurately measuring feed rate in combine harvesters based on pressure measurements.

Design and Test of a Wireless Monitoring System for Feed Rate in Combine Harvester Based on Bottom Plate Pressure of Chain-Rake Conveyor

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A monitoring system achieves high accuracy in feed rate measurement for combine harvesters, indicating its robust data acquisition capabilities.

This research aims to develop a wireless monitoring system for accurately measuring feed rate in combine harvesters based on pressure measurements.
Developed a wireless monitoring system using pressure measurements at the bottom plate of the chain-rake conveyor.
Established a coupling model relating feed rate, chain-rake speed, and bottom plate pressure through theoretical analysis.
Utilized the trimean as a feature metric to enhance signal stability.
Implemented LoRa wireless transmission for data acquisition, transmission, and visualization.
The goodness-of-fit R² for the established model was 0.9963.
The predictive relative error was below 5% under most working conditions, demonstrating high accuracy.
The system proved stable in complex operating environments.

Zhang et al. (2025) studied this question.

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A monitoring system achieves high accuracy in feed rate measurement for combine harvesters, indicating its robust data acquisition capabilities.