CN108493627B - Antenna for very low frequency through-the-earth communication - Google Patents
Antenna for very low frequency through-the-earth communication Download PDFInfo
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- CN108493627B CN108493627B CN201810181544.0A CN201810181544A CN108493627B CN 108493627 B CN108493627 B CN 108493627B CN 201810181544 A CN201810181544 A CN 201810181544A CN 108493627 B CN108493627 B CN 108493627B
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- antenna
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- low frequency
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
Abstract
The invention discloses an antenna for very low frequency through-the-earth communication, which mainly comprises a shell, a relay, a transmitting antenna, a filter, a receiving antenna, a control module and a power supply, wherein the relay is arranged on the shell; the transmitting antenna is movably connected to the transmitting signal hole, and the relay is connected with the transmitting antenna; the filter is arranged in the shell, the receiving antenna is movably arranged in the shell, the receiving antenna can extend out through the signal receiving hole, the filter is connected with the receiving antenna, and an amplifier is arranged at the connection position; the control module comprises a CPU, an FPGA and a router; the power supply is a movable power supply, and is connected with the relay, the filter and the amplifier; the invention realizes the communication antenna of the receiving and transmitting integrated full-duplex through-the-earth communication equipment based on the very low frequency technology, and is suitable for the through-the-earth communication equipment for daily communication, monitoring data transmission and disaster relief of various coal mines, non-coal mines and tunnels.
Description
Technical Field
The invention belongs to the technical field of rescue communication system equipment, and particularly relates to an antenna for very low frequency through-the-earth communication.
Background
At present, the emergency industry in China is showing a vigorous development situation, and an emergency industry system is basically formed, wherein a security communication system becomes an important supporting force. Although some emergency rescue communication products exist in the market, the following problems exist in the application of the emergency rescue communication products through market research and discovery, and are difficult to overcome:
(1) the traditional wired rescue communication equipment system is complex, the expandability is poor, and once a disaster occurs, especially when the severe conditions of inflammable and explosive gas leakage, explosion, fire, power failure and the like exist on the site, the traditional wired rescue communication equipment system faces the risk of comprehensive paralysis.
(2) The wireless emergency rescue communication equipment only has sporadic imported products at present, can not solve the authentication problem of the series standards of China coal safety, mine safety and intrinsic safety at present, and has too short actual detection distance, so that the application range of the wireless emergency rescue communication equipment is greatly limited.
(3) At present, more and more electronic products use wireless communication technology to wirelessly transmit data, voice, image, etc. to form a wireless local area network. The wireless device is a component for sensing electromagnetic waves, and is a necessary device applied to wireless communication technology equipment. The existing built-in antenna is fixed in a certain area inside the equipment and then fed in through a radio frequency coaxial line. However, the miniaturization of wireless devices and the miniaturization of handheld devices results in insufficient space for placement of antennas within the device.
Therefore, the full-wireless through-the-earth communication system between the underground and the ground is developed, the performance of the through-the-earth communication antenna is enhanced, and the survival capability of the communication system can be greatly enhanced, so that the rescue efficiency is improved, the rescue success chance is increased, the market demand is urgent, and the prospect is wide.
Disclosure of Invention
Aiming at the technical problems, the invention provides the antenna for the very low frequency through-the-earth communication, which has the advantages of simple structure, strong through-the-earth property and long detection distance.
The technical scheme of the invention is as follows: an antenna for very low frequency through-the-earth communication mainly comprises a shell, a relay, a transmitting antenna, a filter, a receiving antenna, a control module and a power supply; the shell is provided with two signal transmitting holes and two signal receiving holes; the relay is arranged in the shell, the transmitting antenna is movably connected to the transmitting signal hole, and the relay is connected with the transmitting antenna; the filter is arranged in the shell, the receiving antenna is movably arranged in the shell, the receiving antenna extends out through the signal receiving hole, the filter is connected with the receiving antenna, and an amplifier is arranged at the connection position; the control module is commercially available and comprises a CPU, an FPGA and a router, wherein the CPU and the FPGA are connected with the router, and the CPU and the FPGA are connected with a relay and a filter; the power supply is a movable power supply, and is connected with the relay, the filter and the amplifier; the transmitting antenna comprises two connectors, two fastening sleeves and two flexible antennas, the two connectors are respectively and movably arranged at two ends of the flexible antenna, the two fastening sleeves are respectively and movably arranged at the connecting positions of the connectors and the flexible antennas, and the flexible antennas are connected with the relay through the connectors; the flexible antenna comprises an inner conducting layer, an insulating layer, a protective sleeve, an outer conducting sheet and a pressure-resistant sleeve, wherein the protective sleeve is uniformly provided with a plurality of slotted holes, two ends of the inner conducting layer are connected with a connector, the insulating layer wraps the outer part of the inner conducting layer, the protective sleeve wraps the outer part of the insulating layer, the outer conducting sheets are respectively arranged in the slotted holes, the outer conducting sheet is connected with the inner conducting layer, and the pressure-resistant sleeve wraps the outer part of the protective sleeve; the receiving antenna comprises a low-frequency ferrite, an isolation tube and an enameled wire, wherein the low-frequency ferrite is connected with the amplifier, the enameled wire is wrapped outside the low-frequency ferrite, and the middle of the enameled wire is separated by the isolation tube.
Furthermore, the transmitting signal hole and the receiving signal hole are arranged on one side face of the shell, so that the occupied space can be effectively reduced, and the miniaturization of the wireless equipment and the miniaturization of the handheld equipment can be effectively realized.
Further, be provided with the switch-on jack on the emission signal hole, switch-on jack is provided with insulating protective sheath with emission signal hole contact department, can avoid electric leakage phenomenon effectively to can avoid the production of static effectively, improve the security of user's use in the underground environment effectively.
Furthermore, the relay adopts an isolation solid state relay, the isolation solid state relay is an element of a full electronic circuit combination, the reliability is strong, the device is contactless, has no spark, has long service life, no noise, no electromagnetic interference and high switching speed, and the aim of directly driving a heavy current load can be achieved by a tiny control signal.
Furthermore, a butyl rubber waterproof layer is arranged between the protective sleeve and the compression-resistant sleeve, the butyl rubber has excellent weather resistance, ageing resistance and waterproofness, and plays roles of sealing, shock absorption, protection and the like on the surface of an adherend.
Furthermore, the low-frequency ferrite adopts a magnetic silicon steel sheet, has stronger resistivity and maximum magnetic conductivity, and can effectively reduce coercive force, iron core loss and magnetic aging.
Furthermore, the isolation tube adopts a soft plastic tube which has the characteristics of light weight, corrosion resistance, beautiful appearance, no bad smell, easy processing and the like, and can greatly reduce the manufacturing cost.
Furthermore, the aluminum alloy shell is wrapped outside the receiving antenna, the aluminum alloy shell is convenient to process, the receiving antenna can be effectively protected, the heat dissipation, the shielding and the waterproof performance can be optimal, and the receiving antenna is convenient to install.
The working principle of the invention is as follows: in the transmitting process, the control module controls to open the relay, so that the large current is transmitted through the transmitting antenna; the receiving process is that the receiving antenna receives weak communication signals, the signals are amplified through the amplifier, and communication information is demodulated through the algorithm of the control module.
Compared with the prior art, the invention has the beneficial effects that: the low-frequency ferrite is used as a carrier for receiving signals, the resistivity of the ferrite is much larger than that of metal and alloy magnetic materials, the ferrite has higher dielectric property, the magnetic property of the ferrite also shows higher magnetic conductivity at high frequency, the unique transmitting antenna structure is adopted, the actual detection distance can be greatly increased, the limitation on the application range is smaller, the protective sleeve, the pressure-resistant sleeve and the butyl rubber waterproof layer can effectively avoid the smaller signal transmission range caused by external factors, and meanwhile, the interior of the transmitting antenna can be better protected; meanwhile, the occupied space can be effectively reduced by the movable setting of the transmitting antenna and the telescopic movable setting of the receiving antenna, so that the miniaturization of wireless equipment and the miniaturization of handheld equipment can be effectively realized; the invention realizes the communication antenna of the receiving-transmitting integrated full-duplex through-the-earth communication equipment based on the very low frequency technology, is suitable for the through-the-earth communication equipment for daily communication, monitoring data transmission and disaster rescue of various coal mines, non-coal mines and tunnels, is beneficial to ensuring the safe operation of production work, greatly reduces the time for acquiring communication information after mine accidents occur, and more widely and effectively obtains the underground situation so as to facilitate the timely rescue work in the follow-up process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is a schematic diagram of the structure of the transmitting antenna of the present invention;
fig. 4 is a schematic structural diagram of a receiving antenna of the present invention;
the antenna comprises a shell, a connector, a fastening sleeve, a flexible antenna, an inner conducting layer, an insulating layer, a 333-protective sleeve, a 3330-slotted hole, an outer conducting sheet, a 335-pressure resistant sleeve, a 4-filter, a 5-receiving antenna, a 51-low-frequency ferrite, a 52-isolating tube, a 53-enameled wire, a 54-aluminum alloy shell, a 6-control module and a 7-power supply, wherein the shell is 1-shell, the signal transmitting hole is 11-110-connecting jack, the signal receiving hole is 12-receiving signal hole, the relay is 2-3-transmitting antenna, the connector is 31-connecting sleeve, the flexible antenna is.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Examples
An antenna for very low frequency through-the-earth communication as shown in fig. 1-4 mainly comprises a shell 1, a relay 2, a transmitting antenna 3, a filter 4, a receiving antenna 5, a control module 6 and a power supply 7; the shell 1 is provided with two signal transmitting holes 11 and two signal receiving holes 12, the signal transmitting holes 11 and the signal receiving holes 12 are both arranged on one side surface of the shell 1, the signal transmitting holes 11 are provided with a connection jack 110, and the contact part of the connection jack 110 and the signal transmitting holes 11 is provided with an insulating protective sleeve; the relay 2 is arranged in the shell 1, the transmitting antenna 3 is movably connected to the transmitting signal hole 11, and the relay 2 is connected with the transmitting antenna 3; the filter 4 is arranged in the shell 1, the receiving antenna 5 is movably arranged in the shell 1, the receiving antenna 5 extends out through the signal receiving hole 12, the filter 4 is connected with the receiving antenna 5, and an amplifier is arranged at the connection position; the control module 6 comprises a CPU, an FPGA and a router, wherein the CPU and the FPGA are connected with the router, and the CPU and the FPGA are connected with the relay 2 and the filter 4; the power supply 7 is connected with the movable power supply, and the power supply 7 is connected with the relay 2, the filter 4 and the amplifier; the transmitting antenna 3 comprises two connectors 31, two fastening sleeves 32 and two flexible antennas 33, the two connectors 31 are respectively and movably arranged at two ends of the flexible antennas 33, the two fastening sleeves 32 are respectively and movably arranged at the connecting positions of the connectors 31 and the flexible antennas 33, and the flexible antennas 33 are connected with the relay 2 through the connectors 31; the flexible antenna 33 comprises an inner conducting layer 331, an insulating layer 332, a protective sleeve 333, an outer conducting sheet 334 and a pressure-resistant sleeve 335, wherein the protective sleeve 333 is uniformly provided with a plurality of slotted holes 3330, two ends of the inner conducting layer 331 are connected with the connector 31, the insulating layer 332 wraps the outer part of the inner conducting layer 331, the protective sleeve 333 wraps the outer part of the insulating layer 332, the outer conducting sheets 334 are provided with a plurality of slots which are respectively arranged in the slotted holes 3330, the outer conducting sheet 334 is connected with the inner conducting layer 331, and the pressure-resistant sleeve 335 wraps the outer part of the; the receiving antenna 5 comprises a low-frequency ferrite 51, an isolation tube 52 and an enameled wire 53, wherein the low-frequency ferrite 51 is connected with the amplifier, and the enameled wire 53 is wrapped outside the low-frequency ferrite 51 and is isolated by the isolation tube 52.
The relay 2 is an isolation solid relay, a butyl rubber waterproof layer is arranged between the protective sleeve 333 and the pressure-resistant sleeve 335, the low-frequency ferrite 51 is made of magnetic silicon steel sheets, the isolation tube 52 is made of a soft plastic tube, and the outside of the receiving antenna 5 is wrapped by a layer of aluminum alloy shell 54.
The working principle of the invention is as follows: in the transmitting process, the control module 6 controls to open the relay, so that the large current is transmitted through the transmitting antenna 3; the receiving process is that the receiving antenna 5 receives weak communication signals, the signals are amplified through the amplifier, and communication information is demodulated through the algorithm of the control module.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An antenna for very low frequency through-the-earth communication is characterized by mainly comprising a shell (1), a relay (2), a transmitting antenna (3), a filter (4), a receiving antenna (5), a control module (6) and a power supply (7); the shell (1) is provided with two signal transmitting holes (11) and two signal receiving holes (12), and the number of the signal transmitting holes (11) is two; the relay (2) is arranged inside the shell (1), the transmitting antenna (3) is movably connected to the transmitting signal hole (11), and the relay (2) is connected with the transmitting antenna (3); the filter (4) is arranged in the shell (1), the receiving antenna (5) is movably arranged in the shell (1), the receiving antenna (5) extends out through the signal receiving hole (12), the filter (4) is connected with the receiving antenna (5), and an amplifier is arranged at the connection position; the control module (6) comprises a CPU, an FPGA and a router, wherein the CPU and the FPGA are connected with the router, and the CPU and the FPGA are connected with the relay (2) and the filter (4); the power supply (7) is a movable power supply, and the power supply (7) is connected with the relay (2), the filter (4) and the amplifier; the transmitting antenna (3) comprises two connectors (31), two fastening sleeves (32) and two flexible antennas (33), the two connectors (31) are respectively and movably arranged at two ends of the flexible antennas (33), the two fastening sleeves (32) are respectively and movably arranged at the connecting positions of the connectors (31) and the flexible antennas (33), and the flexible antennas (33) are connected with the relay (2) through the connectors (31); the flexible antenna (33) comprises an inner conducting layer (331), an insulating layer (332), a protective sleeve (333), an outer conducting sheet (334) and a pressure-resistant sleeve (335), wherein the protective sleeve (333) is uniformly provided with a plurality of slotted holes (3330), two ends of the inner conducting layer (331) are connected with the connector (31), the insulating layer (332) wraps the outer part of the inner conducting layer (331), the protective sleeve (333) wraps the outer part of the insulating layer (332), the outer conducting sheets (334) are provided with a plurality of pieces and are respectively arranged in the slotted holes (3330), the outer conducting sheet (334) is connected with the inner conducting layer (331), and the pressure-resistant sleeve (335) wraps the outer part of the protective sleeve (333); the receiving antenna (5) comprises a low-frequency ferrite (51), an isolation tube (52) and an enameled wire (53), wherein the low-frequency ferrite (51) is connected with the amplifier, and the enameled wire (53) is wrapped outside the low-frequency ferrite (51) and is separated by the isolation tube (52).
2. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the transmitting signal aperture (11) and the receiving signal aperture (12) are both arranged on one side of the housing (1).
3. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the receiving antenna (5) is of telescopic construction.
4. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the transmitting signal hole (11) is provided with a connection jack (110), and an insulating protective sleeve is arranged at the contact position of the connection jack (110) and the transmitting signal hole (11).
5. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the relay (2) is an isolating solid state relay.
6. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the low frequency ferrite (51) is made of magnetic silicon steel sheet.
7. An antenna for very low frequency through the earth communication according to claim 1, characterized in that said isolation tube (52) is a flexible plastic tube.
8. An antenna for very low frequency through-the-earth communication according to claim 1, characterized in that the receiving antenna (5) is externally wrapped by a layer of aluminium alloy casing (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181544.0A CN108493627B (en) | 2018-03-06 | 2018-03-06 | Antenna for very low frequency through-the-earth communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181544.0A CN108493627B (en) | 2018-03-06 | 2018-03-06 | Antenna for very low frequency through-the-earth communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108493627A CN108493627A (en) | 2018-09-04 |
| CN108493627B true CN108493627B (en) | 2020-05-05 |
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| CN201810181544.0A Active CN108493627B (en) | 2018-03-06 | 2018-03-06 | Antenna for very low frequency through-the-earth communication |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114300834B (en) * | 2022-01-06 | 2022-08-26 | 北京航空航天大学 | Mining miniaturized low-frequency emergency transmission node based on shape memory structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005061861A1 (en) * | 2005-12-23 | 2007-06-28 | GM Global Technology Operations, Inc., Detroit | Antenna for a motor vehicle |
| CN101394375A (en) * | 2007-09-21 | 2009-03-25 | 中国矿业大学(北京) | Multimedia communication access gateway for mining |
| WO2012006711A1 (en) * | 2010-07-16 | 2012-01-19 | Vital Alert Communication | Portable through-the-earth radio |
| CN103200220A (en) * | 2013-02-07 | 2013-07-10 | 工田矿山通信科技(北京)有限公司 | Mine two-way through ground communication/emergency rescue command and dispatch communication system and device |
| CN106571510A (en) * | 2016-11-02 | 2017-04-19 | 上海复合材料科技有限公司 | Light foldable rod antenna for aerospace and preparation method thereof |
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