PURPOSE: the clearage clearing of trend analysis system change with time, the trend of the movement for predicting clearage and movement is provided to using three-dimensional laser scanner, the reclamation of wasteland the earth's surface being scanned using three-dimensional laser scanner, to systematically measure, resource, including time, labour, cost etc. are saved;CONSTITUTION: a kind of clearage Subsidence trend analysis system (1000) includes laser scanner (100) and management control server (200). Laser scanner, it is mounted on respectively from clearage, shoots laser beam and open up wasteland the earth's surface, receive reflected laser beam, space coordinates one laser beam of (average) irradiation of measurement point is repeatedly calculated, and generates and is opened up wasteland on the earth's surface about multiple measurement point measurement data. Management server generates current and previous 3-D image measuring point data, and by converting by the laser scanner, the measuring point data previously generated, clearage design data determines the variation between current and previous image, and by comparing the 3-D image generated. ;The 2013 of copyright KIPO submissions;[Reference numerals] (100) Laser scanner; (110) scanning means; (120) memory; (130) data transmission unit; (200) control server is managed; (210) data receipt unit; (220) database; (230) operating unit; (231) 3-dimensional image generation unit; (232) comparison result computing unit; (233) movement tendency computing unit; Output unit (240)
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