| 摘要 |
PURPOSE:To enable realtime measurement with high accuracy at a construction work site with frequent changes of the road surface shape, by installing two light-flashing means set at two constant points, two light-receiving means arranged on a vehicle, and detecting means for a vehicle inclination angle. CONSTITUTION:xy co-ordinate positions of a light-receiving position at an apparatus 2 are obtained and also those of the apparatus 3, based upon a setting distance between light-flashing apparatuses 11, 12 and two rotating angles of a laser beam when the light-receiving apparatus 2 received each rotating laser beam from the apparatuses 11, 12. And left and right inclination angle of a vehicle is detected directly from a left and right inclination sensor 4 and fore and aft inclination angle and direction angle are obtained based upon the setting distance of the apparatuses 2, 3, light- receiving height position detected by the apparatuses 2, 3 and xy co-ordinate position and inclination angle previously determined. Next, xy co-ordinate position of a vehicle representing point is obtained based upon one of the xy co-ordinate positions of the apparatuses 2, 3, and inclination angle and direction angle detected or calculated and the z-co-ordinate position of the vehicle representing point is obtained by the z-co-ordinate position of the rotating laser beam, light-receiving height position of one of the apparatuses 2, 3 and inclination angle of them. |
