CN102340329A - Automatic switching equipment for power line communication and Ethernet over Coax - Google Patents
Automatic switching equipment for power line communication and Ethernet over Coax Download PDFInfo
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- CN102340329A CN102340329A CN2011103077783A CN201110307778A CN102340329A CN 102340329 A CN102340329 A CN 102340329A CN 2011103077783 A CN2011103077783 A CN 2011103077783A CN 201110307778 A CN201110307778 A CN 201110307778A CN 102340329 A CN102340329 A CN 102340329A
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Abstract
The invention discloses automatic switching equipment for power line communication and Ethernet over Coax. The automatic switching equipment comprises a first signal transmission circuit, a first signal receiving circuit, a first coupling circuit, a duplexer, a second signal transmission circuit, a second signal receiving circuit, a second coupling circuit, an electronic switch and a control circuit. The electronic switch comprises four paths. One end of each of the four paths is connected with the output end of the first signal receiving circuit, the output end of the second signal receiving circuit, the input end of the first signal transmission circuit and the input end of the second signal transmission circuit respectively. The control circuit is connected with a GPIO (general purpose input/output) port of the electronic switch, and is used for controlling the on/off of the four paths in the electronic switch. The automatic switching equipment disclosed by the invention can be connected with a coaxial line and a power line at the same time, and realizes the differentiated transmission of signals by controlling the on/off of the four paths in the electronic switch so as to realize the power line communication and the Ethernet over Coax.
Description
[technical field]
The present invention relates to communication technical field, relate in particular to a kind of automatic switching apparatus of realizing that power line communication is communicated by letter with coaxial line.
[background technology]
EOC (Ethernet over Coax, coaxial line communication) is a kind of technology of ethernet signal in transmission over coaxial cable, and the frame format of original ethernet signal does not change.The coupling circuit block diagram of EOC is as shown in Figure 1; Comprise signal sending circuit, signal receiving circuit, coupling circuit and duplexer; The output of signal sending circuit is connected with the input of coupling circuit; The output of coupling circuit is connected with the input of duplexer and the input of signal receiving circuit respectively, and the output of duplexer is communicated by letter with coaxial line.
PLC (Power Line Communication; Power line communication), be a kind of communication technology of utilizing power line transmission data and voice signal, this technology is to load on the high frequency of carrying information on the electric current; Use power line transmission then; The modulator-demodulator of reception information is separated high frequency again from electric current, and is sent on computer or the phone, transmits with realization information.This technology realizes multiple services carryings such as data, voice and video on existing power line on the basis that does not need rewiring, just realize four networks one platform, and the plug as long as the terminal use plugs in just can realize that the internet inserts.The coupling circuit block diagram of PLC is as shown in Figure 2; Comprise signal sending circuit, signal receiving circuit and coupling circuit; The output of signal sending circuit is connected with the input of coupling circuit, and the output of coupling circuit is connected with the input and the power line of signal receiving circuit respectively.
But EOC can only transmit ethernet signal on coaxial line, and PLC can only transmit ethernet signal on power line, and two kinds of products transmit on different media respectively, and product function is more single.
[summary of the invention]
The invention provides a kind of automatic switching apparatus of realizing that power line communication is communicated by letter with coaxial line, it can realize that power line communication communicates by letter with coaxial line.
Technical scheme of the present invention is:
A kind of automatic switching apparatus of realizing that power line communication is communicated by letter with coaxial line comprises: first signal sending circuit, first signal receiving circuit, first coupling circuit, duplexer, secondary signal transtation mission circuit, secondary signal receiving circuit, second coupling circuit, electronic switch and control circuit;
Electronic switch comprises four paths; One end of these four paths is connected with the output of first signal receiving circuit, the output of secondary signal receiving circuit, the input of first signal sending circuit, the input of secondary signal transtation mission circuit respectively; Control circuit is connected with the GPIO mouth of electronic switch, is used for controlling the break-make of four paths of electronic switch;
The output of first signal sending circuit is connected with the input of first coupling circuit, and the output of first coupling circuit is connected with the input of first signal receiving circuit and the input of duplexer respectively, the output termination coaxial line of duplexer; The output of secondary signal transtation mission circuit is connected with the input of second coupling circuit, and the output of second coupling circuit is connected with power line with the input of secondary signal receiving circuit respectively.
Automatic switching apparatus of the present invention; Can connect coaxial line and power line simultaneously; Break-make through four paths of control in the electronic switch realizes the break-make with first signal receiving circuit, secondary signal receiving circuit, first signal sending circuit and secondary signal transtation mission circuit; Thereby realize the signal difference transmission, make automatic switching apparatus of the present invention can realize that power line communication communicates by letter with coaxial line.
[description of drawings]
Fig. 1 is the schematic block circuit diagram of coaxial line communication of the prior art;
Fig. 2 is the schematic block circuit diagram of power line communication of the prior art;
Fig. 3 is the schematic block circuit diagram that the present invention realizes the automatic switching apparatus that power line communication is communicated by letter with coaxial line;
Fig. 4 is key circuit of the present invention circuit theory diagrams in one embodiment.
[embodiment]
Below in conjunction with accompanying drawing specific embodiment of the present invention is done a detailed elaboration.
Like Fig. 3; The automatic switching apparatus that realization power line communication of the present invention is communicated by letter with coaxial line comprises: first signal sending circuit, first signal receiving circuit, first coupling circuit, duplexer, secondary signal transtation mission circuit, secondary signal receiving circuit, second coupling circuit, electronic switch and control circuit;
Electronic switch comprises four paths; One end of these four paths is connected with the output of first signal receiving circuit, the output of secondary signal receiving circuit, the input of first signal sending circuit, the input of secondary signal transtation mission circuit respectively; Control circuit is connected with the GPIO mouth of electronic switch, is used for controlling the break-make of four paths of electronic switch; During practical implementation, control circuit is the cut-offfing of electromagnetically operated valve of each path of control;
The output of first signal sending circuit is connected with the input of first coupling circuit, and the output of first coupling circuit is connected with the input of first signal receiving circuit and the input of duplexer respectively, the output termination coaxial line of duplexer; The output of secondary signal transtation mission circuit is connected with the input of second coupling circuit, and the output of second coupling circuit is connected with power line with the input of secondary signal receiving circuit respectively.
This shows; Automatic switching apparatus of the present invention; Can connect coaxial line and power line simultaneously; Break-make through four paths of control in the electronic switch realizes the break-make with first signal receiving circuit, secondary signal receiving circuit, first signal sending circuit and secondary signal transtation mission circuit, thereby realizes the signal difference transmission, makes automatic switching apparatus of the present invention can realize that power line communication communicates by letter with coaxial line.
In a preferred embodiment, control circuit comprises four key circuits, and these four key circuits are connected with the control end of four paths through the GPIO mouth of electronic switch one by one, and this control end is the electromagnetically operated valve in the path; Like Fig. 4, each key circuit comprises first resistance R 1, second resistance R 2, capacitor C 1 and key switch PB2;
One termination power end of first resistance R 1 (being 3.3V shown in the figure); The other end of first resistance R 1 is connected with an end of second resistance R 2, an end of capacitor C 1 and the end 1 of key switch PB2 respectively; The other end 2 of key switch PB2 and the other end ground connection of capacitor C 1, the other end of second resistance R 2 is connected with the GPIO mouth of electronic switch.
Through the break-make of control key switch PB2, make key circuit export the high-low level signal, and then the break-make of control respective via.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (2)
1. automatic switching apparatus of realizing that power line communication is communicated by letter with coaxial line; It is characterized in that, comprising: first signal sending circuit, first signal receiving circuit, first coupling circuit, duplexer, secondary signal transtation mission circuit, secondary signal receiving circuit, second coupling circuit, electronic switch and control circuit;
Electronic switch comprises four paths; One end of these four paths is connected with the output of first signal receiving circuit, the output of secondary signal receiving circuit, the input of first signal sending circuit, the input of secondary signal transtation mission circuit respectively; Control circuit is connected with the GPIO mouth of electronic switch, is used for controlling the break-make of four paths of electronic switch;
The output of first signal sending circuit is connected with the input of first coupling circuit, and the output of first coupling circuit is connected with the input of first signal receiving circuit and the input of duplexer respectively, the output termination coaxial line of duplexer; The output of secondary signal transtation mission circuit is connected with the input of second coupling circuit, and the output of second coupling circuit is connected with power line with the input of secondary signal receiving circuit respectively.
2. the automatic switching apparatus that realization power line communication according to claim 1 is communicated by letter with coaxial line; It is characterized in that: control circuit comprises four key circuits, and these four key circuits are connected with the control end of four paths through the GPIO mouth of electronic switch one by one; Each key circuit comprises first resistance, second resistance, electric capacity and key switch;
One termination power end of first resistance; The other end of first resistance is connected with an end of second resistance, an end of electric capacity and an end of key switch respectively; The other end ground connection of the other end of key switch and electric capacity, the other end of second resistance is connected with the GPIO mouth of electronic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103077783A CN102340329A (en) | 2011-10-12 | 2011-10-12 | Automatic switching equipment for power line communication and Ethernet over Coax |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103077783A CN102340329A (en) | 2011-10-12 | 2011-10-12 | Automatic switching equipment for power line communication and Ethernet over Coax |
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| Publication Number | Publication Date |
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| CN102340329A true CN102340329A (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103077783A Pending CN102340329A (en) | 2011-10-12 | 2011-10-12 | Automatic switching equipment for power line communication and Ethernet over Coax |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954046A (en) * | 2014-03-31 | 2015-09-30 | 华为技术有限公司 | Transmission method and device thereof based on power line communication |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124982A (en) * | 1990-02-27 | 1992-06-23 | Allied Telesis, Incorporated | Multiple port medium attachment unit for a network |
| CN201015197Y (en) * | 2007-02-01 | 2008-01-30 | 精伦电子股份有限公司 | Electric power carrier communication coupling device |
| JP2010278942A (en) * | 2009-06-01 | 2010-12-09 | Nec Tokin Corp | Splitter for plc with balun transformer |
-
2011
- 2011-10-12 CN CN2011103077783A patent/CN102340329A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124982A (en) * | 1990-02-27 | 1992-06-23 | Allied Telesis, Incorporated | Multiple port medium attachment unit for a network |
| CN201015197Y (en) * | 2007-02-01 | 2008-01-30 | 精伦电子股份有限公司 | Electric power carrier communication coupling device |
| JP2010278942A (en) * | 2009-06-01 | 2010-12-09 | Nec Tokin Corp | Splitter for plc with balun transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954046A (en) * | 2014-03-31 | 2015-09-30 | 华为技术有限公司 | Transmission method and device thereof based on power line communication |
| CN104954046B (en) * | 2014-03-31 | 2017-08-04 | 华为技术有限公司 | A kind of transmission method and device based on power line communication |
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Application publication date: 20120201 |