G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 1/02 (2006.01) E21C 35/24 (2006.01)
Patent
CA 2041373
ABSTRACT OF THE DISCLOSURE A control system for guiding a free-steered vehicle such as a dump truck used in a mining environment along a path. In one preferred embodiment there is a scanning laser directed upwardly to scan a coded reference of retroreflective material mounted above the vehicle on a mine roof. There is a sensor to detect laser signals retroreflected from the reference, the sensor and laser forming a laser unit. The vehicle is center-articulated and there is a laser unit on each of the bogeys. The rear bogey has a dump box and the rear unit is retractably mounted on the underside of the dump box. The units are connected to a microprocessor to which are relayed signals from the laser sensor and which directs vehicle operations in response thereto. The coded reference has a central longitudinal guidance strip and on each side there is a set of bar code markers and speed markers. When travelling in one direction along the path the guidance strip and one of the sets of bar code markers and speed markers provide instructions for guidance of the vehicle and to direct other operations such as dumping. When travelling in the other direction along the path the guidance strip and the other set of markers provide instructions for the microprocessor. In another preferred embodiment the path is endless and only one guidance strip and set of markers is required. Further optional aspects of the system include a microwave based collision avoidance system, and an infrared signal-based remote control system.
Blake Cassels & Graydon Llp
Mintronics Systems Corporation
LandOfFree
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