The Research And Design On The Volume Measurement System Of Material Stock Based On Laser Scanning

The volume measurement system of material stock is widely used in the inventory ofresource enterprises, in which the inventory mostly is processed by hand or laser rangingmeasurement currently.It takes a lot of time and labor but only get a low precision result.The mobile3D scanners are applied in a few fuel electric plants to measure the volume ofcoal pile. Although it save measuring time, however, it is too complicated in operation andlow precision to be suitable for those enterprises, such as non-ferrous metal, that requirehigh precision on measurement. Therefore, it requires us to make a intensive study on thetheory and system design on the volume measurement system of material stock to invent anew one with the characteristic of high precision,time-efficiency and easy-operation.The paper analyzes the conditions of inventory in the current enterprises, then devisesa mathematical model for the volume measurement of material stock. It is based on theworking theory of2D laser-scanning and takes a full consideration on the characteristicsin the performance of the sensor applied and the inventory working in site. In addition, thepaper analyzes the error of the model system. On system design, due to the application ofthe laser-ranging sensor for the measuring of the stroke volume, the precision has beenimproved remarkably. A direct measuring on the shift of vehicles has replaced the countway of encoder on the relative displacement. On data transmission,it uses wireless zigbee.The measurer can finish the measurement without getting on off the vehicles so that itimproves the efficiency of inventory and job security.On the base of above works, we use Visual C++and OpenGL to finish the edit ofsoftware and3D-reconstruction. Then we get the inventory by calculating the volume ofmaterial stock with triangular mesh model.Lastly, we have validated this system throughthe field experiment and analyzed systematically on the factors of the measurement erroraccording to the experimental result.In one word, it has been proved that this system haspromising prospects in the market for its easy-operation, fast measuring speed and highprecision.