Device and method for the optical monitoring of moving components

1. An apparatus for optically monitoring a moving component during operation, the moving component moving during the operation, the apparatus comprising:

a tracking device;

a first camera having an image capture region, an optical axis, and an image sensor, the image capture region being controllable by the tracking device such that the first camera follows a movement of the moving component, the first camera being configured to capture at least one first image of at least a part of the moving component, and at least one of the first camera and the image sensor being rotatable about the optical axis such that a relative alignment of the image capture region with the moving component remains unchanged when the at least one first image is captured;

a second camera configured to capture at least one second image of the moving component; and

an open-loop or closed-loop control device configured to:

receive image data from the second camera,

generate an open-loop or closed-loop control signal,

transmit the open-loop or closed-loop control signal to the tracking device, and

predict the movement of the moving component.

2. The apparatus as claimed in claim 1 , wherein:

the first camera has a first image angle,

the second camera has a second image angle, and

the first image angle is smaller than the second image angle.

3. The apparatus as claimed in claim 1 , wherein the second camera is arranged stationary.

4. The apparatus as claimed in claim 1 , further comprising:

a laser having a beam with a beam direction, the beam direction being controllable by the tracking device.

5. The apparatus as claimed in claim 4 , further comprising:

a third camera configured to capture a beam spot of the laser on the moving component and to transmit the data representing a position of the beam spot to the open-loop or closed-loop control device.

6. The apparatus as claimed in claim 1 , wherein the tracking device at least one of:

includes a pan-tilt platform and the first camera is mounted von the pan-tilt platform,

includes a movable mirror which deflects a beam path of a lens of the first camera, and

is configured to permit at least a rotational movement of the first camera about an axis which differs from the optical axis and which does not extend parallel to the optical axis.

7. A method for optically monitoring the moving component of a wind turbine, the method comprising:

monitoring the moving component of the wind turbine with the apparatus as claimed in claim 1 .

8. A method for optically monitoring moving a moving component during operation, the method comprising:

monitoring the moving component with a first camera having an image capture region, an optical axis, and an image sensor;

controlling the image capture region by a tracking device such that the first camera follows a movement of the moving component;

capturing, with the first camera, at least one first image of at least a part of the moving component;

capturing, with a second camera, at least one second image of the moving component;

receiving the at least one second image by an open-loop or closed-loop control device;

generating, by the open-loop or closed-loop control device, an open-loop or closed-loop control signal;

transmitting the open-loop or closed-loop control signal to the tracking device;

rotating at least one of the first camera and the image sensor about the optical axis of the first camera such that a relative alignment of the image capture region with the moving component remains unchanged when the at least one first image is captured; and

predicting the movement of the moving component by the open-loop or closed-loop control device.

9. The method as claimed in claim 8 , wherein:

the first camera has a first image angle,

the second camera has a second image angle, and

the first image angle is smaller than the second image angle.

10. The method as claimed in claim 8 , further comprising:

generating a beam spot on the moving component with a laser having a beam direction;

controlling the beam direction with the tracking device; and

capturing the beam spot with at least one of the first camera and the second camera.

11. The method as claimed in claim 8 , wherein:

the moving component is a rotating component having an axis of rotation, and

the method further comprises:

arranging at least the first camera outside the axis of rotation of the rotating component; and

synchronizing the capturing of the at least one first image and the at least one second image such that the rotating component is aligned substantially orthogonal on a connecting line between the optical axis and the axis of rotation of the rotating component when capturing the at least one first image and the at least one second image.

12. The method as claimed in claim 11 , further comprising:

capturing at least one of (a) both sides of the axis of rotation of the rotating component, and (b) a front side and a back side of the rotating component.