Tunnel Communication Controller Using Seismic and Magnetic Signals
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Solution Overview
Problem
Communication between miners underground and personnel above ground is hindered by the earth, making traditional cabling and wireless methods impractical due to distance and hazardous conditions, especially in emergency situations where reliable and extensive wiring is difficult to maintain.
Innovation Solution
A communication system comprising a controller below ground with uplink and downlink portions using seismic waves and magnetic induction to transmit messages wirelessly to and from miners, allowing for reliable communication through a personnel communication portion, with a processing unit that broadcasts and counts responses to ensure effective message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cabling is used for communication in mines, then communication reliability is improved, but device complexity and ease of manufacture deteriorate due to extensive wiring requirements and hazardous conditions
Solution Approach 1:
The patent replaces the mechanical cabling system with a wireless communication system that uses seismic waves for uplink transmission and magnetic induction for downlink transmission. This substitution eliminates the need for extensive physical wiring throughout the mine, thereby reducing device complexity while maintaining communication reliability through alternative physical principles that are less susceptible to damage from rockfall and hazardous conditions.
Solution Approach 2:
The patent introduces an intermediary communication system that operates through the earth's structure. The uplink portion transmits signals through seismic waves via the earth's crust, while the downlink portion uses magnetic induction through the earth. This intermediary approach allows communication without direct line-of-sight or physical connection between senders and receivers, resolving the contradiction between reliability and complexity.
2Ease of manufacture
If wireless communication is used to eliminate cabling, then ease of manufacture is improved, but communication reliability deteriorates due to the earth's interference with signal transmission
Solution Approach 1:
The patent employs mechanical vibration in the form of seismic waves for uplink communication. By converting electrical signals into mechanical vibrations that travel through the earth's crust, the system overcomes the earth's interference with traditional electromagnetic waves. The seismic waves are generated by the uplink portion and detected by the controller, providing reliable communication while maintaining the wireless installation advantage.
Solution Approach 2:
The patent utilizes phase transitions in the earth's material properties to enable communication. The downlink portion uses magnetic induction that exploits changes in the earth's magnetic field and electrical properties to transmit signals through the ground. This approach transforms the earth from a signal-blocking medium into a signal-transmitting medium, thereby improving reliability while maintaining ease of installation.
3Adaptability or versatility
If extensive wiring is extended to accommodate changing mine distances and configurations, then communication coverage is improved, but device complexity and loss of time worsen due to constant wiring maintenance
Solution Approach 1:
The patent implements a dynamic communication system that automatically adapts to changing mine configurations without requiring physical re-wiring. The wireless system with seismic and magnetic induction components can transmit signals through varying distances and earth conditions dynamically. The controller manages signal transmission and reception adaptively, allowing the system to maintain communication coverage as mine distances and configurations change over time, thereby eliminating maintenance time losses.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable and efficient communication between miners and above-ground personnel, even in hazardous environments, by using seismic waves for uplink and magnetic induction for downlink, ensuring effective message transmission and response monitoring, thus addressing the challenges of distance and hazardous conditions.
Implementation Method 1
an uplink portion that sends uplink messages from the controller below ground in the tunnel through the earth to above ground
Implementation Method 2
a downlink portion through which downlink messages are sent from above ground through earth to the controller below ground in the tunnel
Data Source
AI summary
A communication system for allowing personnel in a tunnel below ground to communicate with a location above ground includes a controller disposed below ground in the tunnel. The system includes an uplink portion that sends uplink messages from the controller below ground in the tunnel through earth to above ground. The system includes a downlink portion through which downlink messages are sent from above ground through earth to the controller below ground in the tunnel. The system includes a personnel communication portion through which downlink messages are sent from the controller wirelessly to the personnel as personnel messages and personnel messages are received wirelessly by the controller from the personnel below ground in the tunnel. A controller for allowing personnel in a tunnel below ground to communicate with a location above ground. A method for allowing personnel in a tunnel below ground to communicate with a location above ground.