Patent ID: 7589829
Filing Date: 2009-09-15
Classification: E02F,G01C

Abstract:
1. A laser measuring system, comprising a laser rotary irradiation device for forming a laser reference plane by projecting a laser beam in rotary irradiation, and a photodetection device for performing position measurement by receiving the laser beam, wherein said laser rotary irradiation device comprises a laser beam emitter, an emission light amount adjusting means for adjusting light amount of the laser beam of said laser beam emitter, and a first communication means for performing communication with said photodetection device, wherein said photodetection device comprises a photodetector for detecting the reference plane, a second communication means for performing communication to and from said laser rotary irradiation device, and a control unit for calculating whether a photodetection signal from said photodetector is within a predetermined range or not, wherein said first communication means transmits a laser beam emitting condition of said laser rotary irradiation device to said second communication means, and said second communication means transmits a photodetecting condition of said photodetection device to said first communication means, and wherein said control unit transmits the calculation result to said laser rotary irradiation device via said second communication means, said emission light amount adjusting means adjust the light amount of the laser beam based on the calculation result received so that a peak value of the photodetection signal will be within a predetermined range.