CN110112564B - Power line, signal transmitting equipment and head-up display - Google Patents
Power line, signal transmitting equipment and head-up display Download PDFInfo
- Publication number
- CN110112564B CN110112564B CN201910436273.3A CN201910436273A CN110112564B CN 110112564 B CN110112564 B CN 110112564B CN 201910436273 A CN201910436273 A CN 201910436273A CN 110112564 B CN110112564 B CN 110112564B
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- Prior art keywords
- power
- antenna
- interface
- port
- outer conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
- H01Q1/46—Electric supply lines or communication lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Details Of Aerials (AREA)
- Transmitters (AREA)
Abstract
The invention provides a power line, a signal transmitting device and a head-up display, wherein the power line comprises: a coaxial cable comprising an inner conductor, an inner insulator, an outer conductor, an outer insulator in concentric, concentric relationship; a power interface pair comprising a first power interface connected to the inner conductor and a second power interface connected to the outer conductor, wherein the first power interface and the second power interface are configured to connect to a power device; and the antenna interface is connected with the outer conductor. The invention solves the problems of antenna interference and additional cost increase, and achieves the effects of reducing antenna interference and saving antenna cost.
Description
Technical Field
The invention relates to the field of communication, in particular to a power line, signal transmitting equipment and a head-up display.
Background
Many devices are equipped with antennas, such as FM antennas, most of which are receive antennas, and many transmit antennas. FM transmission antennas are various in types, including antennas for fixed transmission base stations, antennas for portable devices, antennas for fixed systems, antennas for easy installation, antennas for exclusive use, antennas for other signal lines, and the like.
For portable devices, a simple dedicated antenna needs to be specially designed, and the transmission efficiency is not high; some portable devices use external wires such as a power line and an earphone cord as an FM transmitting antenna, but the interference of the antenna is large; some use a special external antenna, thereby increasing additional cost.
For example, in the related patent CN106299904A, an antenna is additionally arranged in a housing, and the housing is arranged on a power line, as shown in fig. 1 and 2 of the patent, the antenna module is actually a separate module, that is, the antenna design in the patent still requires an additional antenna module.
For another example, in the related patent CN106329240A, an object is disposed in the power plug, and an antenna is disposed in the object, and as can be seen from fig. 1 and fig. 2 of the patent, the antenna module is also a separate module in practice, that is, an additional antenna module is also required by the antenna design method in the patent.
Therefore, in the related art, when the external wire is used as the antenna, the interference of the antenna is large, and when a special external antenna is used, the cost of the antenna is additionally increased.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a power line, signal transmitting equipment and a head-up display, which at least solve the problems that in the related art, when an external lead is adopted as an antenna, the antenna interference is large, and when a special external antenna is adopted, the antenna cost is additionally increased.
According to an embodiment of the present invention, there is provided a power supply line including: a coaxial cable comprising an inner conductor, an inner insulator, an outer conductor, an outer insulator in concentric, concentric relationship; a power interface pair comprising a first power interface connected to the inner conductor and a second power interface connected to the outer conductor, wherein the first power interface and the second power interface are configured to connect to a power device; and the antenna interface is connected with the outer conductor.
Optionally, the first power interface includes: a first port connected to the inner conductor; a second port configured to connect with a third port in the power supply device; the second power interface comprises: a fourth port connected to the outer conductor; a fifth port arranged to connect with a sixth port in the power supply device.
Optionally, the antenna interface includes: a seventh port connected to the outer conductor; an eighth port arranged to be connected to a power amplifier.
Optionally, the power amplifier comprises a frequency modulation, FM, transmit power amplifier.
According to another embodiment of the present invention, there is provided a signal transmitting apparatus including: the power cord of any of the above; the direct current signal isolator is connected with the antenna interface of the power line at a first end; a power amplifier, wherein the power amplifier is connected to the second end of the DC signal isolator; the first end of the alternating current signal isolator is connected with the antenna interface of the power line, and the second end of the alternating current signal isolator is grounded.
Optionally, the dc signal isolator comprises a capacitor.
Optionally, the power amplifier comprises a frequency modulation, FM, transmit power amplifier.
Optionally, the ac signal isolator includes a magnetic bead.
According to another embodiment of the present invention, there is provided a head-up display including the signal transmitting apparatus of any one of the above.
Optionally, the head-up display further comprises the power supply device.
According to the invention, the power line of the equipment is designed into the coaxial cable, so that the over-current of the coaxial cable is larger compared with the conducting wire with the same diameter; in addition, the external conductor of the coaxial line is used as the antenna, so that an external lead is not required to be used as the antenna, a special external antenna is not required to be arranged, the problems of interference and extra cost increase are effectively solved, and the effects of reducing antenna interference and saving antenna cost are achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a block diagram of a power line according to an embodiment of the present invention;
fig. 2 is a block diagram of a coaxial cable according to an embodiment of the present invention;
fig. 3 is a block diagram of a signal transmitting apparatus according to an embodiment of the present invention;
fig. 4 is a block diagram of a head-up display according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
For portable devices, a simple dedicated antenna needs to be specially designed, and the transmission efficiency is not high; some portable devices need to use external wires such as a power line and an earphone line as an antenna, for example, an FM transmitting antenna, which causes relatively large interference; some require a special external antenna, which adds additional cost. How the present invention solves the above problems is described below with reference to specific embodiments:
in the present embodiment, there is provided a power supply line, as shown in fig. 1, including: a coaxial cable 12 including an inner conductor, an inner insulator, an outer conductor, an outer insulator in concentric, concentric relationship; a pair of power interfaces 14 comprising a first power interface connected to the inner conductor and a second power interface connected to the outer conductor, wherein the first power interface and the second power interface are configured to connect to a power device; and an antenna interface 16 connected to the outer conductor.
The structure of the coaxial cable 12 can be seen in fig. 2, in which the electrical conductor at the inner circle is the inner electrical conductor, the electrical conductor at the outer circle is the outer electrical conductor, the insulator at the inner circle is the inner insulator, and the insulator at the outer circle is the outer insulator.
In the above embodiment, the power supply line is designed as a coaxial cable, which realizes that the coaxial cable has larger overcurrent relative to the wires with the same diameter; in addition, the external conductor of the coaxial line is used as the antenna, so that an external lead is not required to be used as the antenna, a special external antenna is not required to be arranged, the problems of interference and extra cost increase are effectively solved, and the effects of reducing antenna interference and saving antenna cost are achieved.
In an alternative embodiment, the first power interface comprises: a first port connected to the inner conductor; a second port configured to connect with a third port in the power supply device; the second power interface comprises: a fourth port connected to the outer conductor; a fifth port arranged to connect with a sixth port in the power supply device.
In an alternative embodiment, the antenna interface includes: a seventh port connected to the outer conductor; an eighth port arranged to be connected to a power amplifier. In this embodiment, the eighth port may be connected to the power amplifier through a dc signal isolator, so as to ensure effective isolation of the dc signal transmitted from the power amplifier to the external conductor.
In an alternative embodiment, the power amplifier comprises a frequency modulation fm (frequency modulation) transmit power amplifier.
In this embodiment, there is also provided a signal transmitting apparatus, as shown in fig. 3, including: the power cord 32 of any of the above; a dc signal isolator 34, wherein a first end of the dc signal isolator is connected to the antenna interface of the power line; a power amplifier 36, wherein the power amplifier is connected to the second end of the dc signal isolator; and an ac signal isolator 38, wherein a first end of the ac signal isolator is connected to the antenna interface of the power line, and a second end of the ac signal isolator is grounded.
In an alternative embodiment, the dc signal isolator 34 includes a capacitor.
In an alternative embodiment, the power amplifier 36 comprises a frequency modulation FM transmit power amplifier.
In an alternative embodiment, the ac signal isolator 38 comprises magnetic beads.
The present invention will be described below by taking the external conductor of the coaxial cable as an FM transmission antenna as an example:
it should be noted that, in the embodiment of the present invention, by using the shielding property of the coaxial cable, the outer conductive shielding layer (i.e., the outer insulator) can neutralize the electric field of the inner cable, so that the whole cable can be regarded as a single wire in practice, which is just in line with the requirement of the FM transmitting antenna.
In an alternative circuit structure, the FM signal in the present invention may be amplified by an FM transmission power amplifier, isolated from direct current by a capacitor, and then connected to a shielding layer (i.e., an outer conductor or a metal sheath) of a coaxial cable, and further shielded into a characteristic equivalent to a single-strand wire, and the FM signal is transmitted into the air by electromagnetic induction. And meanwhile, the ground wire input of the power supply is connected with the ground signal of the equipment through the magnetic beads. The magnetic beads isolate alternating current signals and ensure that the direct current signals smoothly pass through. The power supply signal passes through the core of the coaxial cable, and the generated electric field is counteracted by the induced charges of the shielding layer. Meanwhile, opposite charges attract each other, a coaxial cable is used as a power supply line, the induction area is utilized to the maximum extent, space is also fully utilized, and the current passing capacity is increased in a lead with the same diameter.
In the present embodiment, a head-up display is also provided, and as shown in fig. 4, the head-up display 42 includes the signal transmitting device 44 described in any one of the above.
In an alternative embodiment, the heads-up display further comprises the power supply device.
Compared with the prior art, the coaxial cable is used as a power supply, and the current passing through the cable with the same diameter is larger. Meanwhile, only a simple isolation is needed, and the shielding ground of the coaxial line can be used as the FM transmitting antenna. The method has the characteristics of low cost, small interference, high emission efficiency and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A power cord, comprising:
a coaxial cable comprising an inner conductor, an inner insulator, an outer conductor, an outer insulator in concentric, concentric relationship;
a power interface pair comprising a first power interface connected to the inner conductor and a second power interface connected to the outer conductor, wherein the first power interface and the second power interface are configured to connect to a power device;
an antenna interface connected to the outer conductor;
wherein the first power interface comprises: a first port connected to the inner conductor; a second port configured to connect with a third port in the power supply device; the second power interface comprises: a fourth port connected to the outer conductor; a fifth port arranged to connect with a sixth port in the power supply apparatus;
the direct current signal isolator is connected with the antenna interface of the power line at a first end;
a power amplifier, wherein the power amplifier is connected to the second end of the DC signal isolator.
2. The electrical power cord as set forth in claim 1, wherein said antenna interface comprises:
a seventh port connected to the outer conductor;
an eighth port arranged to be connected to a power amplifier.
3. The electrical power cord as set forth in claim 2, wherein the power amplifier comprises a frequency modulation FM transmit power amplifier.
4. A signal transmitting apparatus, comprising:
the power supply line according to any one of claims 1 to 3;
the first end of the alternating current signal isolator is connected with the antenna interface of the power line, and the second end of the alternating current signal isolator is grounded.
5. The signal transmitting device of claim 4, wherein the DC signal isolator comprises a capacitor.
6. The signal transmitting device of claim 4, wherein the power amplifier comprises a Frequency Modulation (FM) transmit power amplifier.
7. The signal transmitting device of claim 4, wherein the AC signal isolator comprises magnetic beads.
8. A head-up display comprising the signal transmission device of any one of claims 4 to 7.
9. The heads-up display of claim 8 further comprising the power device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436273.3A CN110112564B (en) | 2019-05-23 | 2019-05-23 | Power line, signal transmitting equipment and head-up display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436273.3A CN110112564B (en) | 2019-05-23 | 2019-05-23 | Power line, signal transmitting equipment and head-up display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110112564A CN110112564A (en) | 2019-08-09 |
| CN110112564B true CN110112564B (en) | 2021-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910436273.3A Active CN110112564B (en) | 2019-05-23 | 2019-05-23 | Power line, signal transmitting equipment and head-up display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112564B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5621420A (en) * | 1995-04-07 | 1997-04-15 | Comant Industries, Inc. | Duplex monopole antenna |
| CN203300791U (en) * | 2013-05-30 | 2013-11-20 | 昆山骅盛电子有限公司 | AM/FM power line antenna |
| CN203300799U (en) * | 2013-06-20 | 2013-11-20 | 北京中天鸿大科技有限公司 | CMMB coaxial omnidirectional vertically polarized antenna |
| CN204680737U (en) * | 2015-06-10 | 2015-09-30 | 杭州富通电线电缆有限公司 | A kind of leaky coaxial cable |
| US9276310B1 (en) * | 2011-12-31 | 2016-03-01 | Thomas R. Apel | Omnidirectional helically arrayed antenna |
| CN108598819A (en) * | 2018-04-25 | 2018-09-28 | 合肥惠科金扬科技有限公司 | Power cord with antenna function and display terminal |
| US10096952B1 (en) * | 2015-10-14 | 2018-10-09 | CSC Holdings, LLC | Cable having an integrated antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200956400Y (en) * | 2006-04-27 | 2007-10-03 | 昆达电脑科技(昆山)有限公司 | Antenna sharing structure for electronic device |
| JP5028917B2 (en) * | 2006-09-04 | 2012-09-19 | ミツミ電機株式会社 | Antenna device |
| CN202487738U (en) * | 2012-02-13 | 2012-10-10 | 钟玉英 | Frequency-adjustable transmitting antenna |
| SE539769C2 (en) * | 2016-02-05 | 2017-11-21 | Cellmax Tech Ab | Antenna feeding network comprising a coaxial connector |
| CN106299904B (en) * | 2016-08-30 | 2018-09-04 | 广东美的厨房电器制造有限公司 | Cable structure, power line structure and electrical equipment |
-
2019
- 2019-05-23 CN CN201910436273.3A patent/CN110112564B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5621420A (en) * | 1995-04-07 | 1997-04-15 | Comant Industries, Inc. | Duplex monopole antenna |
| US9276310B1 (en) * | 2011-12-31 | 2016-03-01 | Thomas R. Apel | Omnidirectional helically arrayed antenna |
| CN203300791U (en) * | 2013-05-30 | 2013-11-20 | 昆山骅盛电子有限公司 | AM/FM power line antenna |
| CN203300799U (en) * | 2013-06-20 | 2013-11-20 | 北京中天鸿大科技有限公司 | CMMB coaxial omnidirectional vertically polarized antenna |
| CN204680737U (en) * | 2015-06-10 | 2015-09-30 | 杭州富通电线电缆有限公司 | A kind of leaky coaxial cable |
| US10096952B1 (en) * | 2015-10-14 | 2018-10-09 | CSC Holdings, LLC | Cable having an integrated antenna |
| CN108598819A (en) * | 2018-04-25 | 2018-09-28 | 合肥惠科金扬科技有限公司 | Power cord with antenna function and display terminal |
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| Publication number | Publication date |
|---|---|
| CN110112564A (en) | 2019-08-09 |
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