Plant Equipment and Hire September 2018 | Page 28

Caterpillar, for one, has developed a system for semi- autonomous operation of LHDs called Command for Underground, which has components purpose-built for underground mining, with rugged features targeted to underground applications. 28 SEPTEMBER 2018 When a miner enters a zone, the system sends a warning through a flashing light and buzzing sound to alert them that they are entering a dangerous area. shape and size of the vehicle’s magnetic field as the waves will penetrate the rock walls and other obstructions that limit what operators and pedestrians view. “If the pedestrian is behind another vehicle, for example, or behind a corner in the tunnel, the proximity detection system must be able to pick up and pinpoint their position — and this is what VLF allows us to accomplish so effectively with our PDS solution,” he says. The company has leveraged VLF technology to afford valuable functionality for mine safety initiatives; among the most important of these is the creation of detection ‘zones’ within the magnetic field that trigger specific greater operator warnings and subsequent actions. “Our technology allows us to define the accuracy of these zones to within very low deviation tolerances,” says Schommer. “For instance, our first zone of safety may be 20 metres from the PRODUCT FOCUS The Booyco PDS is robustly constructed ensuring its durability under operational conditions.