The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2000
Filed:
Nov. 10, 1997
Fumio Ohtomo, Tokyo, JP;
Kazuaki Kimura, Tokyo, JP;
Vernon J Brabec, Pleasanton, CA (US);
Satoshi Hirano, Pleasanton, CA (US);
Makoto Omori, Pleasanton, CA (US);
Kabushiki Kaisha Topcon, Tokyo, JP;
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.