Study on unmanned aerial vehicle automatic coal volume measuring system of open coal storage yard

According to low efcient and poor accuracy status of the coal volunme measuring in open coal storage yard automatic coal volume measuring system ofthe open coal storage yard with unmanned aerial vehice was designed.with the high defintion image of the coal storage yard with the i egrated GPs acurate positioning information obtained with the unmanned aerial vehicle with the aplicaion of the3 D model of the open coalstorage yard reconstructed with the 3D reconstrucion technology based on the 2D image,the volume of the 3D model was calculated and thecoalstorage volume ofthe open cal storage yard was calculated. n comparson 2nalysis on the site measuring resutsof the lasr radar coal voume measuring system,the results showed that the coal volume measuring system with the unmanned aeral vehicle coud save 27.5%coal measurin time than the laser rada cal measuring system,the coal volume measuring accuracy was higher than the laser radar coameasuring system and could overcome a high cos.complicated operation shetering and fade zone. and ather disadvantages.Thus the coal volume measuring rate andaccuracy of the open coal storage yard could be improved and the actual requrements of the rapid and accuratecoal volume measuring in the open coal torage yard :ould be fully met.