Mining Contract: Supplementary Technologies for Advanced Mine Communication Networks
This contract will develop a Universal Signal Evaluation Package for 75- and 150-MHz bands, adapt a passive magnetic amplifier for 900-MHz, and investigate energy harvesting technologies. Prototype devices will be tested in a mine environment, as follows:
Contract Status & Impact
This contract is complete. To receive a copy of the final report, send a request to email@example.com.
Recording and mapping instruments for 75- and 150-MHz signal bands were delivered to NIOSH along with operation manuals for their use.
A small wind generator has been tested in the laboratory at velocities below six miles per hour and found to generate sufficient power for wireless communication nodes. A Stirling Engine has also been identified which can generate small amounts of power through magnetic induction by using a rare earth permanent magnet and a multiple turn coil.
A wireless access network has been installed in NIOSH's Safety Research Coal Mine to serve as a test bed for evaluating the signal recording and mapping instruments, the prototype energy harvesting, and future passive magnetic amplifier developed under this contract.
- Communication Systems Research At Bruceton Safety Research Mine
- Development of a Through-the-Earth Monitor System
- Propagation of EM Signals in Underground Mines
- Radio System Modifications for Improved Mine Safety (Medium Frequency)
- Technical Services for Mine Communications Research: Task A, Task Order No. 1 - Applicability of State-Of-The-Art Voice Bandwidth Compression Techniques for Wireless Mine Communication
- Technology News 544 - New Measurement Tool to Validate Wireless Communications and Tracking Radio Signal Coverage in Mines
- Through-The-Earth Wireless Real-Time Two-Way Voice Communications
- U.S. Bureau of Mines New Developments in Mine Communications
- Underground Mine Communications
- Wireless Through-The-Earth Modeling and Support