CN106357292A - photoelectric isolated full-duplex differential transceiver - Google Patents
photoelectric isolated full-duplex differential transceiver Download PDFInfo
- Publication number
- CN106357292A CN106357292A CN201610719665.7A CN201610719665A CN106357292A CN 106357292 A CN106357292 A CN 106357292A CN 201610719665 A CN201610719665 A CN 201610719665A CN 106357292 A CN106357292 A CN 106357292A
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- CN
- China
- Prior art keywords
- module
- signal
- differential signal
- isolation module
- photoelectric isolation
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Classifications
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
Abstract
A photoelectric isolated full-duplex differential transceiver comprises a differential signal receiving module, a differential signal transmitting module, a photoelectric isolated module at receiving end and a photoelectric isolated module at transmitting end. The advantage of the photoelectric isolated full-duplex differential transceiver is to shield the interference which may be introduced during the long-distance transmission process, greatly improving the reliability and security of electronic systems.
Description
Technical field
The present invention relates to a kind of difference transceiver, more particularly, to a kind of type photoelectric isolating full-duplex differential transceiver.
Background technology
The technical protocol of differential transfer is rs-422/485, and this agreement is that conventional physical layer bus sets with instrument and meter for industry
One of meter standard, is widely used in various electronic systems；When carrying out long-range data transmission, often introduce ground loop, wink
State voltage etc. disturbs, if these interference enter electronic system, can affect the normal realization of its function, can cause system when serious
Lost efficacy and even damaged；Traditional difference transceiver is because its own feature is it is difficult to be prevented effectively from aforementioned interference to electronic system
Impact, leads to the reliability of system and safety to be difficult to be protected.
Content of the invention
For the problem in background technology, the present invention proposes a kind of type photoelectric isolating full-duplex differential transceiver, its wound
Newly it is: described type photoelectric isolating full-duplex differential transceiver is by differential signal receiver module, differential signal sending module, reception
End photoelectric isolation module and transmitting terminal photoelectric isolation module composition；
The input of described differential signal receiver module is connected with signal transmssion line, the outfan of differential signal receiver module with connect
The input of receiving end photoelectric isolation module connects, and the outfan of receiving terminal photoelectric isolation module is connected with local electronic system；Institute
The input stating transmitting terminal photoelectric isolation module is connected with local electronic system, the outfan of transmitting terminal photoelectric isolation module and difference
The input of sub-signal sending module connects, and the outfan of differential signal sending module is connected with signal transmssion line；
Described signal transmssion line is used for long-distance transmissions differential signal；
Described differential signal receiver module can by the differential signal that signal transmssion line exports be converted to single-ended electrical signal and export to
Receiving terminal photoelectric isolation module；
Single-ended electrical signal can be converted to the signal of telecommunication with the conversion regime of electrical-optical-electrical by described receiving terminal photoelectric isolation module, and will
Electric signal transmission is to local electronic system；
The signal of telecommunication that local electronic system exports can be turned by described transmitting terminal photoelectric isolation module with the conversion regime of electrical-optical-electrical
It is changed to single-ended electrical signal, and single-ended electrical signal is exported to differential signal sending module；
The single-ended electrical signal of transmitting terminal photoelectric isolation module output can be converted to differential signal by described differential signal sending module
And export and be transmitted to signal transmssion line；
Described differential signal receiver module, differential signal sending module, receiving terminal photoelectric isolation module and transmitting terminal Phototube Coupling
Module is encapsulated in same housing.
The operation principle of the present invention is: when type photoelectric isolating full-duplex differential transceiver receives local electronic system output
After the signal of telecommunication, received by transmitting terminal photoelectric isolation module, then transmitting terminal photoelectric isolation module converts electrical signals to list
The end signal of telecommunication simultaneously exports to differential signal sending module, and then, single-ended electrical signal is converted to difference by differential signal sending module
Signal export differential signal is transmitted to signal transmssion line；Receive in the type photoelectric isolating full-duplex differential transceiver of far-end
To after the differential signal of signal transmssion line output, first differential signal is reduced to by single-ended electrical signal by differential signal receiver module,
Then, differential signal receiver module transmits single-ended electrical signal to receiving terminal photoelectric isolation module, receiving terminal photoelectric isolation module
Single-ended electrical signal is converted to by the signal of telecommunication with the conversion regime of electrical-optical-electrical and exports to corresponding electronic system；
In aforementioned process, photoelectric isolation module serves electrical isolation between local electronic system and signal transmssion line and makees
With, so that the interference factors such as ground loop, transient voltage is blocked on outside electronic system, greatly improve electronic system reliability and
Safety.
Preferably, described receiving terminal photoelectric isolation module and transmitting terminal photoelectric isolation module are all using light emitting diode and light
Detection circuit is realized, and the optical detection circuit of the light emitting diode of receiving terminal photoelectric isolation module and transmitting terminal photoelectric isolation module is altogether
With power supply one, the shared electricity of light emitting diode of the optical detection circuit of receiving terminal photoelectric isolation module and transmitting terminal photoelectric isolation module
Source two.After aforementioned preferred version, can further improve the reliability of photoelectric isolation module.
Preferably, described differential signal receiver module and differential signal sending module share power supply one.
The method have the benefit that: provide a kind of type photoelectric isolating full-duplex differential transceiver, this transceiver
Reliability and the safety of electronic system can be greatly improved by the interference shielding that may introduce during long range propagation outside.
Brief description
Fig. 1, the electronic schematic diagram of the present invention；
Title corresponding to each labelling of in figure is respectively as follows: differential signal receiver module 1, differential signal sending module 2, receiving terminal
Photoelectric isolation module 3, transmitting terminal photoelectric isolation module 4, local electronic system 5, signal transmssion line 6.
Specific embodiment
A kind of type photoelectric isolating full-duplex differential transceiver, its innovation is: described type photoelectric isolating full-duplex differential is received
Send out device by differential signal receiver module 1, differential signal sending module 2, receiving terminal photoelectric isolation module 3 and transmitting terminal Phototube Coupling
Module 4 forms；
The input of described differential signal receiver module 1 is connected with signal transmssion line, the outfan of differential signal receiver module 1 with
The input of receiving terminal photoelectric isolation module 3 connects, and the outfan of receiving terminal photoelectric isolation module 3 is with local electronic system even
Connect；The input of described transmitting terminal photoelectric isolation module 4 is connected with local electronic system, transmitting terminal photoelectric isolation module 4 defeated
Go out end to be connected with the input of differential signal sending module 2, the outfan of differential signal sending module 2 is with signal transmssion line even
Connect；
Described signal transmssion line is used for long-distance transmissions differential signal；
Described differential signal receiver module 1 can by the differential signal that signal transmssion line exports be converted to single-ended electrical signal and export to
Receiving terminal photoelectric isolation module 3；
Single-ended electrical signal can be converted to the signal of telecommunication with the conversion regime of electrical-optical-electrical by described receiving terminal photoelectric isolation module 3, and
By electric signal transmission to local electronic system；
The signal of telecommunication that local electronic system exports can be turned by described transmitting terminal photoelectric isolation module 4 with the conversion regime of electrical-optical-electrical
It is changed to single-ended electrical signal, and single-ended electrical signal is exported to differential signal sending module 2；
The single-ended electrical signal that transmitting terminal photoelectric isolation module 4 can be exported by described differential signal sending module 2 is converted to difference letter
Number and export and be transmitted to signal transmssion line；
Described differential signal receiver module 1, differential signal sending module 2, receiving terminal photoelectric isolation module 3 and transmitting terminal photoelectricity every
It is encapsulated in same housing from module 4.
Further, described receiving terminal photoelectric isolation module 3 and transmitting terminal photoelectric isolation module 4 are all using light emitting diode
Realize with optical detection circuit, the optical detection of the light emitting diode of receiving terminal photoelectric isolation module 3 and transmitting terminal photoelectric isolation module 4
Circuit shares power supply one, the light-emitting diodes of the optical detection circuit of receiving terminal photoelectric isolation module 3 and transmitting terminal photoelectric isolation module 4
Pipe shares power supply two.
Further, described differential signal receiver module 1 and differential signal sending module 2 share power supply one.
Implement for the ease of those skilled in the art, some ins and outs are described as follows by inventor:
When being embodied as, axially can divide three regions along housing, be used for realizing differential signal receiver module 1 and differential signal is sent out
The level shifting circuit sending module 2 is arranged on zone line, be used for realizing receiving terminal photoelectric isolation module 3 and transmitting terminal photoelectricity every
The region being respectively provided at both sides from two photoelectric isolating circuits of module 4；Photo-detector in photoelectric isolating circuit and luminous
Diode can be using common correlation structure, for ensureing isolation performance, and device inside adopts high-purity nitrogen to encapsulate；Produce system
When making, by spun gold interconnection technique on microwave assembly technology and piece, related circuit is integrated in enclosure interior.
Claims (3)
1. a kind of type photoelectric isolating full-duplex differential transceiver it is characterised in that: the transmitting-receiving of described type photoelectric isolating full-duplex differential
Device is by differential signal receiver module (1), differential signal sending module (2), receiving terminal photoelectric isolation module (3) and transmitting terminal photoelectricity
Isolation module (4) forms；
The input of described differential signal receiver module (1) is connected with signal transmssion line, the output of differential signal receiver module (1)
End is connected with the input of receiving terminal photoelectric isolation module (3), the outfan of receiving terminal photoelectric isolation module (3) and local electronics
System connects；The input of described transmitting terminal photoelectric isolation module (4) is connected with local electronic system, transmitting terminal Phototube Coupling mould
The outfan of block (4) is connected with the input of differential signal sending module (2), the outfan of differential signal sending module (2) with
Signal transmssion line connects；
Described signal transmssion line is used for long-distance transmissions differential signal；
The differential signal that signal transmssion line exports can be converted to single-ended electrical signal and export by described differential signal receiver module (1)
To receiving terminal photoelectric isolation module (3)；
Single-ended electrical signal can be converted to the signal of telecommunication with the conversion regime of electrical-optical-electrical by described receiving terminal photoelectric isolation module (3),
And by electric signal transmission to local electronic system；
The signal of telecommunication that local electronic system can be exported by described transmitting terminal photoelectric isolation module (4) with the conversion regime of electrical-optical-electrical
Be converted to single-ended electrical signal, and single-ended electrical signal is exported to differential signal sending module (2)；
The single-ended electrical signal that transmitting terminal photoelectric isolation module (4) export can be converted to difference by described differential signal sending module (2)
Sub-signal exporting is transmitted to signal transmssion line；
Described differential signal receiver module (1), differential signal sending module (2), receiving terminal photoelectric isolation module (3) and transmitting terminal
Photoelectric isolation module (4) is encapsulated in same housing.
2. type photoelectric isolating full-duplex differential transceiver according to claim 1 it is characterised in that: described receiving terminal photoelectricity
Isolation module (3) and transmitting terminal photoelectric isolation module (4) are all realized using light emitting diode and optical detection circuit, receiving terminal photoelectricity
The optical detection circuit of the light emitting diode of isolation module (3) and transmitting terminal photoelectric isolation module (4) shares power supply one, receiving terminal light
The light emitting diode of the optical detection circuit of electric isolution module (3) and transmitting terminal photoelectric isolation module (4) shares power supply two.
3. type photoelectric isolating full-duplex differential transceiver according to claim 2 it is characterised in that: described differential signal connects
Receive module (1) and differential signal sending module (2) shares power supply one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719665.7A CN106357292A (en) | 2016-08-25 | 2016-08-25 | photoelectric isolated full-duplex differential transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719665.7A CN106357292A (en) | 2016-08-25 | 2016-08-25 | photoelectric isolated full-duplex differential transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357292A true CN106357292A (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610719665.7A Pending CN106357292A (en) | 2016-08-25 | 2016-08-25 | photoelectric isolated full-duplex differential transceiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126670A (en) * | 2019-06-06 | 2019-08-16 | 包建军 | Using general-purpose device structure simply distribution BMS |
| CN112118084A (en) * | 2020-09-02 | 2020-12-22 | 威胜电气有限公司 | Half-duplex differential bus isolation relay device and data line transmission system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554413A (en) * | 1984-05-31 | 1985-11-19 | Pks/Communications, Inc. | Key telephone system |
| CN105515611A (en) * | 2015-12-21 | 2016-04-20 | 南京亚派科技股份有限公司 | APF (active power filter) communication system |
| CN205430732U (en) * | 2016-02-02 | 2016-08-03 | 陕西科技大学 | Configuration device based on DALI system |
-
2016
- 2016-08-25 CN CN201610719665.7A patent/CN106357292A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554413A (en) * | 1984-05-31 | 1985-11-19 | Pks/Communications, Inc. | Key telephone system |
| CN105515611A (en) * | 2015-12-21 | 2016-04-20 | 南京亚派科技股份有限公司 | APF (active power filter) communication system |
| CN205430732U (en) * | 2016-02-02 | 2016-08-03 | 陕西科技大学 | Configuration device based on DALI system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126670A (en) * | 2019-06-06 | 2019-08-16 | 包建军 | Using general-purpose device structure simply distribution BMS |
| CN110126670B (en) * | 2019-06-06 | 2022-09-30 | 包建军 | Distributed BMS employing universal devices |
| CN112118084A (en) * | 2020-09-02 | 2020-12-22 | 威胜电气有限公司 | Half-duplex differential bus isolation relay device and data line transmission system |
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Application publication date: 20170125 |