Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Construction or agricultural-type vehicle
Patent
1997-11-10
2000-01-18
Nguyen, Tan
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Construction or agricultural-type vehicle
356 73, G01B 1114
Patent
active
060164557
ABSTRACT:
An automatic control system for a construction machine includes the construction machine provided with a ground leveling implement, a target, and a laser sensor; a survey unit that has a coordinate position measuring element and projects a beam of tracking light indicating a finished-plane height toward the target; a storage unit for storing finished-plane height data in correspondence with a horizontal coordinate position in the coordinate position; a computation unit for computing the finished-plane height data; a modulation unit for modulating the laser beam, based on construction information at the horizontal coordinate position, and for transmitting the construction information to the laser sensor; and a demodulation unit fox demodulating the construction information, based on the laser beam received by the laser sensor. The survey unit is equipped with a finished-height data drive mode in which the laser beam is rotated in a vertical direction by a rotation unit so that the height of the laser beam at the horizontal coordinate position becomes a height from the determined finished plane. The construction machine is provided with a control unit for controlling the ground leveling implement so that it reaches the finished-plane height, based on a position at which the laser beam is received on the laser sensor, and also controlling the ground leveling implement, based on the demodulated construction information.
REFERENCES:
patent: 4732471 (1988-03-01), Cain et al.
patent: 5572809 (1996-11-01), Steenwyk et al.
Brabec Vernon J.
Hirano Satoshi
Kimura Kazuaki
Ohtomo Fumio
Omori Makoto
Kabushiki Kaisha Topcon
Nguyen Tan
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