CN105553517A - Differential signal transmission method implemented in to-ground differential way - Google Patents
Differential signal transmission method implemented in to-ground differential way Download PDFInfo
- Publication number
- CN105553517A CN105553517A CN201510948490.2A CN201510948490A CN105553517A CN 105553517 A CN105553517 A CN 105553517A CN 201510948490 A CN201510948490 A CN 201510948490A CN 105553517 A CN105553517 A CN 105553517A
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- CN
- China
- Prior art keywords
- differential signal
- line
- differential
- power line
- signal transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a differential signal transmission method implemented in a to-ground differential way. The method comprises the following steps: (1) transmitting high-voltage electric energy through a live line L and a null line N in a four-core cable power line; and (2) connecting a ground line E in the four-core cable power line with a differential signal negative electrode, connecting a data line D in the four-core cable power line with a differential signal positive electrode, and transmitting a differential signal through the ground line E and the data line D. The live line L and the null line N can transmit the high-voltage electric energy normally; the ground line E is connected with the differential signal negative electrode; and the data line D is connected with the differential signal negative electrode. Thus, the differential signal is transmitted through the four-core cable power line under the condition of not being interfered by a high-voltage grid. The differential signal transmission method has the advantages of high signal transmission rate, signal stability and reliability, and low wiring cost.
Description
Technical field
The present invention relates to Signal transmissions, especially a kind of differential signal transmission method of difference over the ground.
Background technology
Front signal transmission form can be divided into wire signal to transmit and transmission of wireless signals two kinds substantially, wherein wire signal transmission means generally all adopts the way of low-voltage signal line and high-tension distributing line wires apart, the normal work of object in order to prevent high voltage power distribution from having influence on low-voltage signal, but the cost of low voltage wiring can be increased equally.In order to solve low voltage wiring Cost Problems and engineering complexity, there is the high-voltage fence communication modes of power line carrier, advantage is directly by L, N, E tri-power line signal transmissions of three-core cable, eliminate low-voltage signal line, engineering wiring is simple, and cost is cheaper, shortcoming is that signal transmission rate is low, easily disturb by electrical network, stability is poor, is difficult to extensive use.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of differential signal transmission method of difference over the ground, and signal transmission rate is high, and signal stabilization is reliable, and wiring cost is low.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of differential signal transmission method of difference over the ground,
(1) the live wire L in a quad power line and zero line N transferring high voltage electric energy is utilized;
(2) the earth connection E in quad power line connects differential signal negative pole, and the data wire D in quad power line connects differential signal positive pole
,utilize an earth connection E and a data lines D differential signal transmission.The present invention is on the cable power line of total live wire L, a zero line N, earth connection E, data wire D tetra-cores, utilize the signal transmission form of wherein an earth connection E and a data lines D differential signal transmission, wherein live wire L and zero line N line can normal transmission high voltage electric energies, earth connection E connects differential signal negative pole, and data wire D connects differential signal positive pole
,thus under the condition not by high-voltage fence interference, utilize quad power line transmission differential signal, its advantage is that signal transmission rate is high, signal stabilization is reliable, and wiring cost is low.
As improvement, in described step (2), by arranging differential amplifier at the two ends of cable power line, one of them is as input, and another realizes as output.
The beneficial effect that the present invention is compared with prior art brought is:
The present invention is on the cable power line of total live wire L, a zero line N, earth connection E, data wire D tetra-cores, utilize the signal transmission form of wherein an earth connection E and a data lines D differential signal transmission, wherein live wire L and zero line N line can normal transmission high voltage electric energies, earth connection E connects differential signal negative pole, and data wire D connects differential signal positive pole
,thus under the condition not by high-voltage fence interference, utilize quad power line transmission differential signal, its advantage is that signal transmission rate is high, signal stabilization is reliable, and wiring cost is low.
Accompanying drawing explanation
Fig. 1 is differential transfer differential signal circuit schematic diagram over the ground.
Fig. 2 is full duplex mode differential transfer differential signal circuit schematic diagram over the ground.
Fig. 3 is for adding photoelectric switch differential transfer differential signal circuit schematic diagram over the ground.
Fig. 4 is the differential signal circuit of the differential transfer over the ground schematic diagram adding photoelectric switch and TVS pipe.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
As shown in Figure 1, a kind of differential signaling circuit of difference over the ground, comprises quad power line, differential amplifier T and differential amplifier R; Live wire L, zero line N, earth connection E, data wire D tetra-cores are had in cable power line; Differential amplifier T is arranged on one end of cable power line as signal input part, differential amplifier R is arranged on the other end of cable power line as signal output part, the two ends of earth connection E are connected with the differential signal negative pole of differential amplifier T and differential amplifier R respectively, and the two ends of data wire D are connected with the differential signal positive pole of differential amplifier T and differential amplifier R respectively.
As shown in Figure 2, for realizing full duplex mode differential transfer differential signal over the ground, an a differential amplifier T and one differential amplifier R can be equipped with at the two ends of cable power line, the differential amplifier T of cable power line input and the differential amplifier R of cable power line output terminal matches the two ends forming Signal transmissions, so all can realize the input and output of signal at the two ends of cable power line.
As shown in Figure 3, data-signal transfers to the input of differential amplifier T by light isolating switch; The output of differential amplifier R is outputed signal by photoelectric switch.
As shown in Figure 4, on the basis adding photoelectric switch, between described earth connection E and data wire D, be provided with TVS pipe, form overvoltage protection.
The differential signal transmission method of the present invention's difference over the ground: on the cable power line of total live wire L, a zero line N, earth connection E, data wire D tetra-cores, utilize the signal transmission form of wherein an earth connection E and a data lines D differential signal transmission, wherein live wire L and zero line N line can normal transmission high voltage electric energies, earth connection E connects differential signal negative pole, and data wire D connects differential signal positive pole
,thus under the condition not by high-voltage fence interference, utilize quad power line transmission differential signal, its advantage is that signal transmission rate is high, signal stabilization is reliable, and wiring cost is low.
Claims (2)
1.
a differential signal transmission method for difference over the ground, is characterized in that:
(1) the live wire L in a quad power line and zero line N transferring high voltage electric energy is utilized;
(2) the earth connection E in quad power line connects differential signal negative pole, and the data wire D in quad power line connects differential signal positive pole, utilizes an earth connection E and a data lines D differential signal transmission.
2.
the differential signal transmission method of a kind of difference over the ground according to claim 1, is characterized in that: in described step (2), and by arranging differential amplifier at the two ends of cable power line, one of them is as input, and another realizes as output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510948490.2A CN105553517A (en) | 2015-12-17 | 2015-12-17 | Differential signal transmission method implemented in to-ground differential way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510948490.2A CN105553517A (en) | 2015-12-17 | 2015-12-17 | Differential signal transmission method implemented in to-ground differential way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105553517A true CN105553517A (en) | 2016-05-04 |
Family
ID=55832477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510948490.2A Pending CN105553517A (en) | 2015-12-17 | 2015-12-17 | Differential signal transmission method implemented in to-ground differential way |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105553517A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383084A (en) * | 2008-10-14 | 2009-03-11 | 浙江大学 | Isolation type bus supplying communication system |
| CN202059409U (en) * | 2011-04-07 | 2011-11-30 | 北京华电信通科技有限公司 | Zero line-data line coupling mode low pressure power line communication system |
| WO2012032932A1 (en) * | 2010-09-10 | 2012-03-15 | 住友電気工業株式会社 | Power line communication system, power line communication device, and connector device |
| CN104170268A (en) * | 2012-03-16 | 2014-11-26 | 住友电气工业株式会社 | Communication device and communication system |
-
2015
- 2015-12-17 CN CN201510948490.2A patent/CN105553517A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383084A (en) * | 2008-10-14 | 2009-03-11 | 浙江大学 | Isolation type bus supplying communication system |
| WO2012032932A1 (en) * | 2010-09-10 | 2012-03-15 | 住友電気工業株式会社 | Power line communication system, power line communication device, and connector device |
| CN202059409U (en) * | 2011-04-07 | 2011-11-30 | 北京华电信通科技有限公司 | Zero line-data line coupling mode low pressure power line communication system |
| CN104170268A (en) * | 2012-03-16 | 2014-11-26 | 住友电气工业株式会社 | Communication device and communication system |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |