Through-the-earth communication system
A technology for through-the-earth communication and communication systems, applied in the field of communication, can solve the problems of transmission circuit influence, limited system bandwidth, large size, etc., and achieve the effect of increasing transmission power and avoiding influence and interference.
Active Publication Date: 2017-05-31
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology
Most of the transmitting antennas used in the prior art are large in size, low in radiation efficiency, limited in system bandwidth, and low in communication rate, making it difficult to transmit VLF and ULF signals
In addition, in the prior art, in order to enable the ground-penetrating communication system to transmit low-frequency strong magnetic field signals, the distance between the transmitting circuit and the transmitting antenna is relatively close, resulting in the influence and interference of low-frequency strong magnetic field signals on the transmitting circuit
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[0024] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.
[0025] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.
[0026] The ground-penetrating communication system provided by the present invention is described in detail in the following embodiments. It should be understood that the ground-penetrating communication system can be used for ground-underground communication, communication between differen...
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The invention provides a through-the-earth communication system. The system comprises a first communication unit and a second communication unit, wherein the first communication unit comprises a first signal transmitting device and a first signal receiving device; the second communication unit comprises a second signal transmitting device and a second signal receiving device; the first signal transmitting device comprises a control box, a drive box, a transmitting antenna, and an isolation power source box arranged between the control box and the drive box; the isolation power source box provides the voltage for the control box and the drive box; an optical fiber for signal transmission is arranged between the drive box and the control box. The through-the-earth communication system provided by the invention can effectively increase the transmitting power and produce a very-low frequency and ultra-low frequency transmitting signal, and meanwhile, the influence and the interference of a high intensity magnetic field of the transmitting antenna to a weak-current circuit of the control are avoided.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a through-the-earth communication system. Background technique [0002] Modern industrial production and urban construction are gradually expanding the development and utilization of underground space. Wireless communication technology is also widely used in the environment below the surface, such as underground environment perception and facility monitoring, underground safety production monitoring, underground personnel positioning and post-disaster rescue, etc. , which makes the study of long-distance wireless through-the-earth communication a research hotspot in the field of wireless communication. However, the structure of the earth signal is complex, and it is a relatively bad channel. The earth medium attenuates electromagnetic waves greatly. When electromagnetic waves propagate in the earth medium, the semi-conductive medium needs to absorb the energy of electromagn...
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IPC IPC(8): H04B1/40H04B10/25H04B13/02
CPCH04B1/40H04B10/25H04B13/02
Inventor 刘锋李杨夏嘉斌董明利娄小平贺庆祝连庆
Owner BEIJING INFORMATION SCI & TECH UNIV