US 7,483,153 B2
Power-saving control method in laser measuring system and laser measuring system
Takaaki Yamazaki, Itabashi-ku (Japan); and Yasutaka Katayama, Itabashi-ku (Japan)
Assigned to Kabushiki Kaisha TOPCON, Tokyo-to (Japan)
Filed on Feb. 27, 2008, as Appl. No. 12/72,635.
Claims priority of application No. 2007-075362 (JP), filed on Mar. 22, 2004.
Prior Publication US 2008/0231839 A1, Sep. 25, 2008
Int. Cl. G01B 11/14 (2006.01)
U.S. Cl. 356—614 10 Claims
OG exemplary drawing
 
1. A power-saving control method in a laser measuring system, which comprises a laser rotary irradiation device for forming a laser reference plane by projecting a laser beam in rotary irradiation and a photodetection device for carrying out position measurement by receiving the laser beam, comprising a step of detecting using status of the photodetection device by said photodetection device, a step of selecting steady operation or power-saving mode based on the detection of using status, a step of transmitting a power-saving mode transition instruction to said laser rotary irradiation device by said photodetection device when the power-saving mode is selected, a step of receiving the power-saving mode transition instruction by said laser rotary irradiation device, and a step of executing power-saving control.