Combine harvester comprising a spreading device for spreading chopped crop, and method of operating same
A combine harvester has a spreading device for spreading chopped crop, a control device to which the spreading device is connected and which controls spreading properties of the spreading device, and a wind anemometer located on either side of the spreading device in a rear region of the combine harvester and producing a signal corresponding to a characteristic of wind.
1. A combine harvester, comprising:
a spreading device for spreading chopped crop;
a control device to which said spreading device is connected and which controls spreading properties of said spreading device according to a specified default control setting;
first and second wind anemometers located respectively on either side of the spreading device, in a rear region of the combine harvester;
wherein the first wind anemometer generates a first signal (S 1 ), the second wind anemometer generates a second signal (S 2 ) and each of the first and second signals (S 1 , S 2 ) represent both a wind direction and a wind force of a cross wind; and
wherein the control device compares the first and the second signals (S 1 , S 2 ) are to one another and uses
one of the first and second signals (S 1 , S 2 ) determined to have a greater signal intensity to control the spreading device to adapt the default control setting to changing spreading conditions.
2. The combine harvester as defined in claim 1 , wherein the first and the second wind anemometers are positioned above said spreading device and below a vertically delimiting horizontal plane, the vertically delimiting horizontal plane being substantially coplanar with a plane of the ground upon which the combine harvester is positioned or traveling and which delimits the combine harvester in a vertical direction.
3. The combine harvester as defined in claim 2 , wherein the first and the second wind anemometers are located in a common horizontal plane of the combine harvester that is located between, and is substantially in parallel with, the plane of the ground and the vertically delimiting horizontal plane.
4. The combine harvester as defined in claim 3 , wherein the first and the second wind anemometers each comprise a plate suspended swivelably about a horizontal axis that extends substantially in parallel to the direction of travel.
5. The combine harvester as defined in claim 4 , wherein each of the first and the second wind anemometers has an angular-position sensor which registers a deflection of said plate.
6. The combine harvester as defined in claim 5 , further comprising end stops limiting the deflection of said plate.