Method and system for increasing the operational safety of mobile machines in aboveground or underground mining operations for the extraction of minerals by utilizing the RFID technology
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United States of America Patent
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Apr 18, 2017
Grant Date -
Sep 11, 2014
app pub date -
Oct 26, 2012
filing date -
Oct 28, 2011
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Abstract
A system and method for increasing the operational safety of mobile machines in mining operations by utilizing RFID technology includes a transmitting unit at the mobile machine, a receiving unit, and a non-machine-related RFID transponder which can be activated by the transmitting unit and in the case of activation is contactlessly detected. A reference transponder and a control unit for actuating the transmitting unit and evaluating transponder signals in measuring cycles is provided. To improve the energy requirement of the method and system, the reference transponder may be mounted on the mobile machine at a defined distance, stored in the control unit, from the transmitting unit. The signal field strength L of the transmitter signal of the transmitting unit may be changed in dependence on the response signal of the reference transponder in a calibration cycle (KCB) for eliminating the environmental influences.
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