SURVEYING SYSTEM FOR ROAD REGISTER USEING CHANGEABLE BENCHMARK

摘要

PURPOSE: A system for surveying road resister data using a variable 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 a reference point, thereby reducing expenses for managing the road register. CONSTITUTION: A system for surveying road resister data using a variable reference comprises a measuring device, a reference point(20), and a remote controller. 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 forming 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. The reference point comprises a spraying device(200), a laser pointer(300), a control unit(400), a battery, and a transceiver.