ULTRA SONIC RANGE FINDING FOR DISTANCE MEASURING IN COAL MINING

Mining Coal or Finding Terrorists: The Expanding Search Paradigm

We show how to optimize the search for a hidden object, terrorist, or simply Hider, located at a pointH according to a known or unknown distribution ν on a rooted network Q. We modify the traditional ‘pathwise search’approach to a more general notion of ‘expanding search’. When the Hider is restricted to the nodes of Q, an expanding search S consists of an ordering (a1, a2, . . . ) of the arcs ...

Image Mining for Intelligent Autonomous Coal Mining

Automation in underground mining enhances safety and leads to economic efficiencies. After more than 50 years of research, automation tasks have gradually been growing out of the classic engineering/mechanical environment and require a sophisticated datamining treatment. The success of (mechanical) process automation has left only one remaining place in the coal-excavation process where human l...

Fundamentals of 3D modelling and resource estimation in coal mining

The prerequisite of maintaining an efficient and safe mining operation is the proper design of a mine by considering all aspects. The first step in a coal mine design is a realistic geometrical modelling of the coal seam(s). The structural features such as faults and folding must be reliably implemented in 3D seam models. Upon having a consistent seam model, the attributes such as calorific val...

Ultra-miniature force plate for measuring triaxial forces in the micronewton range.

Measuring the ground reaction forces of a single leg is indispensable to understanding the dynamics of legged locomotion. Because of the technical state of the art, investigations are limited to animals with a body mass above 1 g. Here we present the design, fabrication, calibration and performance of a novel ultra-miniature force platform at the micronewton level. The sensor was built using th...

Coal Exploration and Mining