In-line-Sensing of Grain Quality on a Combine Harvester

Near-infrared spectroscopy (NIRS) is a well-established and standardized method for the analysis of agricultural products. These on/in-line applications have established their control capability in food processing. The online-analysis and the segregation of grain according to specified quality parameters on-combine have been investigated in a completed research project, whereas the main focus of the following research project is on the in-line-analysis of quality parameters in combination with imaging techniques. The taxonomy of process depends on the proximity of process analyzers to the process line [1]. While in-line-sensing allows in situ measurements of grain quality, on-line sensing is characterized by the need for a mechanical transport system. In comparison to on-line measurement, the in-line analysis requires ruggedly designed equipment as well as robust calibration methodologies to fulfill the demands of realtime monitoring and processing of grain on-combine.