PASER Enhanced Radio
Hardhat Caplamp Transceiver with In-Mine Infrastructure
Wearable hardhat caplamp transceiver
Receives VHF/UHF band signals from miner/rescue team hand-held radios
Translates these signals to the MF band
Transmits wirelessly mine-wide and to surface via the in-mine infrastructure
In-Mine Antennas and Life-Line Infrastructure System
Antennas: Insulated conductor Life-Line horizontal electric dipole antenna in every entry
Copper Life-line operating as a dual frequency band antenna
ULF band for through-the-Earth (TTE) communications
MF band mine-wide and inside-mine-to-portal communications
How it works
The wireless MF band signal illuminates nearby antennas and copper life-line infrastructure inducing electrical current traveling along the conductors with minimal loss of signal strength.
Wearable Transceiver and Wireless Electromagnetic Technology
VHF/UHF band radios are made useful in post-accident self-escape and rescue communications within underground mines and collapsed structures. The revolutionary and evolutionary technology has been built into a wearable hard-hat cap-lamp transceiver (CLT).
The wearable transceiver receives VHF/UHF band signals from miner/rescue team hand-held radios and translates these signals to the MF band. The wireless MF band signal illuminates nearby infrastructure robust electrical conductors. From electromagnetic wave scattering theory, MF band illumination induces electrical current that travels along the conductors with minimal loss of signal strength (attenuation rate of only 2dB/kilometer).
The current flow generates useful magnetic fields along the conductor for tens of kilometers. The destination cap-lamp transceiver electronics translate the MF band signal back to the VHF/UHF band and then re-transmit the VHF/UHF band signal. The re-transmitted signal is received by the hand-held VHF/UHF band radio, producing audio band voice and message alerts. The transmission path’s repeater-transceivers translate the MF band to the ULF band for through-the-Earth (TTE) radio communications with the surface. The dual frequency band electrical conductor transmission path, installed as a “life-line”, enables mine-wide and TTE coverage.