Electronic leveling apparatus having a leveling staff detection

Details Electronic leveling apparatus having a leveling staff detection Electronic leveling apparatus having a leveling staff detection

1994-02-16

1996-07-16

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

33293, 356 403, 356 408, 35613908, G01C 308, G01C 2102, G01C 1502

Patent

active

055372007

ABSTRACT:
An electronic leveling apparatus and associated leveling staff are capable of measuring the height difference of the positions automatically through the opto-electric conversion of the image of a pattern formed on the leveling staff. The apparatus has a turning drive means for turning it on a horizontal plane, a light emission means for emitting a light beam to the outside, a light reception means for receiving a reflected light of the emitted light beam, and a signal processor for controlling the turning drive means in response to the received signal so that the apparatus is oriented to the leveling staff automatically.

REFERENCES:
patent: 3790277 (1974-02-01), Hogan
patent: 4029415 (1977-06-01), Johnson
patent: 4488050 (1984-12-01), Iwafune
patent: 4673287 (1987-06-01), Rickus
patent: 4715714 (1987-12-01), Gaechter et al.

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