Method and arrangement for optimizing an operating parameter of a combine

1. A method for optimizing an operating parameter of a combine harvester ( 10 ) comprising these steps:

(a) driving the combine harvester ( 10 ) over a field at at least an approximately constant speed or constant throughput, at least until a processing procedure of the combine harvester ( 10 ) has stabilized;

(b) determining and storing in a processing unit ( 80 ) data pertaining to at least one sensor value for a parameter of the processing procedure in the combine harvester ( 10 ) provided by a first sensor ( 76 , 78 ), and data pertaining to an associated position of the combine harvester ( 10 );

(c) transmitting the data pertaining to the associated position to a manual apparatus ( 88 ), wherein said manual apparatus is provided with a camera ( 96 ) and with a position determination device ( 94 );

(d) moving the manual apparatus ( 88 ) to the associated position, and recording an image of a field ground with the camera ( 96 );

(e) processing the image in order to determine a property of the image;

(f) determining a calibration value by the processing unit ( 80 ) using the at least one sensor value and the property of the image; and

(g) determining and then displaying or automatically setting an operating value of the combine harvester ( 10 ) by the processing unit ( 80 ) using current sensor values of the first sensor ( 76 , 78 ) and the calibration value.

2. The method according to claim 1 , wherein the steps (a) to (f) are each repeated at different speeds or different throughputs.

3. The method according to claim 1 , wherein the at least one sensor value relates to grain losses or throughput of the combine harvester ( 10 ), and the property of the image is a number of lost grains on a certain area of the field.

4. The method according to claim 1 , wherein step (e) occurs in the manual apparatus ( 88 ) or in the processing unit ( 80 ).

5. The method according to claim 1 , wherein step (e) occurs completely automatically or taking into consideration operator inputs.

6. The method according to claim 5 , wherein, in step (e), an operator can mark relevant image portions of the image on a touch-sensitive display ( 92 ) of the manual apparatus or of the processing unit, and a number of markings is counted.

7. The method according to claim 1 , wherein, in step (g), measured values of an additional sensor ( 100 ) are taken into consideration for a determination of environmental variables, and learned or predetermined effects of an environmental variable on the sensor values are taken into consideration.

8. The method according to claim 1 , wherein, in steps (b) and (g), additional values that influence a determination of the at least one sensor value for the parameter of the processing procedure in the combine harvester ( 10 ) are determined by additional sensor means and stored, and wherein these additional values are taken into consideration in step (f) or (g) in a compensating manner for the data pertaining to at least one sensor value, considering values provided by the additional sensor means at a later time, wherein permanently stored relationships or relationships learned during operation of the combine are taken into consideration.

9. The method according to claim 8 , wherein the additional values relate to an inclination of the combine harvester ( 10 ) in the forward direction or lateral direction, to work parameters of a cleaning device ( 46 ), to flow rates of grain or chaff, to grain moisture or to a conveyance rate of non-grain components in an elevator between a grain auger ( 48 ) and a grain tank ( 50 ).

10. A combine harvester ( 10 ) comprising means for performing the steps of claim 1 .