Electronic leveling apparatus and method

Details Electronic leveling apparatus and method Electronic leveling apparatus and method

2011-06-28

2011-06-28

Punnoose, Roy (Department: 2886)

Optics: measuring and testing

Dimension

Thickness

Reexamination Certificate

active

07969586

ABSTRACT:
An electronic leveling apparatus for optically measuring a height difference relative to a leveling staff comprises a telescope, a camera fixed to the telescope, a first actuator for rotating both said telescope and said camera in a horizontal plane about a fixed vertical axis of the apparatus, and a controller. The camera has a depth of focus that is at least twice a depth of focus of the telescope. The controller uses a first output signal from said telescope to output a leveling signal representing a detected height difference. The controller uses a second output signal from said camera to identify a representation of a leveling staff and to control the first actuator based on the identified representation of the leveling staff. Furthermore a method for optically measuring a height difference of an electronic leveling apparatus relative to a leveling staff is provided.

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