Filling degree gauge, agricultural vehicle with the gauge, and method of measuring and displaying residual filling potential of target area

1. A filling degree gauge for measuring and displaying a residual filling potential of a target area being filled through a target with goods by a goods carrier of an agricultural vehicle, the filling degree gauge comprising:

a 3D imaging device for observing at least a part of the target area including at least a part of the target;

a data control system arranged for receiving images of the observed part of the target area from the 3D imaging device; and

a visual display unit;

wherein said data control system operates to provide on the visual display unit a first visual display indicating a residual filling potential by indicating a current one of at least three different levels of the residual filling potential.

2. A filling degree gauge as defined in claim 1 , wherein said data control system operates to provide on the visual display unit a second visual display indicating a local residual filling potential for at least two local areas.

3. A filling degree gauge as defined in claim 2 , wherein the data control system provides in the visual display unit the second visual display indicating the local residual filling potential of the at least two local areas which are fixed relative to the 3D sensor.

4. A filling degree gauge as defined in claim 2 , wherein the data control system provides in the visual display unit the second visual display indicating the local residual filling potential of the at least two local areas which are fixed relative to the target area.

5. A filling degree gauge as defined in claim 2 , wherein the local areas and boundaries thereof are floating in dependence on levels of the residual filling potential.

6. A filling degree gauge as defined in claim 1 , wherein said data control system operates to provide on the visual display unit the first visual display indicating different levels of residual filling potential by different colors.

7. A filling degree gauge as defined in claim 1 , wherein said data control system operates to provide on the visual display unit the first visual display in which for a given local area, a color indicating a level of the residual filling potential is changed, when the level of the residual filling potential changes for that local area.

8. A filling degree gauge as defined in claim 1 , wherein said data control system operates to provide on the visual display unit the first visual display indicating a local residual filling potential as a 2D graph.

9. A filling degree gauge as defined in claim 8 , wherein said data control system operates to provide on the visual display unit the first visual display indicating said 2D graph in a 2D coordinate system in which one axis represents a position in the target area and another axis represents a filling degree.

10. A filling degree gauge as defined in claim 1 , wherein said data control system operates to provide on the visual display unit a third visual display indicating at least a part of the target area and a level of the residual filling potential of local areas within said part of the target area.

11. A filling degree gauge as defined in claim 10 , wherein said data control system operates to provide on the visual display unit the third visual display indicating at least a part of the target area and the level of the residual filling potential of local areas within said part of the target area by indicating a mean local residual filling potential for parallel bands of the target area.

12. A filling degree gauge as defined in claim 1 , wherein said data control system operates to display an image provided by said 3D imaging device on the visual display unit together with the first visual display indicating the residual filling potential.

13. A filling degree gauge as defined in claim 12 , wherein one of the displayed image and the first visual display indicating the residual filling potential is superposed on the other.

14. A filling degree gauge as defined in claim 13 , wherein the superposed displayed image or first visual display is transparent.

15. A filling degree gauge as defined in claim 14 , wherein said superposed displayed image or first visual display has an adjustable transparency to indicate the residual filling potential.

16. A filling degree gauge as defined in claim 1 , wherein the agricultural machine is a forage harvester and wherein the filing degree gauge measures and displays the residual filling potential of the target area through the target with goods by the goods carrier, which is a discharge spout of the forage harvester.

17. A filling degree gauge as defined in claim 1 , wherein the 3D imaging device is a stereo camera comprising two CCD cameras.

18. An agricultural vehicle, comprising a goods carrier for conveying goods to a target area; and a filling degree gauge as defined in claim 1 .

19. A method for measuring and displaying a residual filling potential of a target area being filled through a target with goods by a goods carrier of an agricultural machine, the method comprising the steps of:

observing by a gauge comprising a 3D imaging device at least a part of the target area including at least a part of the target; and

providing, by a data control system configured to receive images from the 3D imaging device, on a visual display unit, a visual display indicating the residual filling potential of the target area being filled by indicating a current one of at least three different levels of the residual filling potential.

20. A method for measuring and displaying as defined in claim 19 , wherein the 3D imaging device used in the step of observing is a stereo camera comprising two CCD cameras.