抄録
In the reclaiming work in harbours, mud and sand are carried by barges and the measurement of the volume becomes important. A method now used is a simple one which almost depends on a perception of a skilled person. Therefore, it causes not only unexact measurement (and also time-consuming), but also a difficulty in the decision of an exact budget in large-scaled reclaiming.
This paper proposes an automatic measurement system which gathers the data of the surface of the carried mud and sand by using optical range sensors and measures the volume accurately even at night. This system first estimates the surface of the carried mud and sand as a linear combination of Gaussian type functions by least squares method, and next calculates the volume by integrating the estimated function of the surface. But, no numerical integration is required at the measurement, because integrals of the basis functions are a priori calculated. Finally, the validity of the proposed measurement system is verified by both simulations and experiments.
