| 摘要 |
PURPOSE: A data surveying system of a road resister using a manhole type reference point is provided to have no need to install a separate reference point by utilizing a manhole which is installed on a road as the reference point, thereby reducing expenses for managing the road resister. CONSTITUTION: A data surveying system of a road resister using a manhole type reference point comprises a measuring device, a reference point(20), and a remote controller(30). The measuring device is installed on the top of a tripod and used for measuring a distance from the reference point and vertical and horizontal angles formed with the reference point. The reference point sprays water particles to a central upper part and radiates laser lights to the central upper part from three lateral directions so that the laser lights are scattered by the water particles. The scattered laser lights form an intersecting point and the intersecting point of the laser lights is identified. The remote controller controls angles of the reference point when spraying the water particles and radiating the laser lights.
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