CN109450549A - Photoelectric conversion device and communication system - Google Patents
Photoelectric conversion device and communication system Download PDFInfo
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- CN109450549A CN109450549A CN201811416290.2A CN201811416290A CN109450549A CN 109450549 A CN109450549 A CN 109450549A CN 201811416290 A CN201811416290 A CN 201811416290A CN 109450549 A CN109450549 A CN 109450549A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
Abstract
The invention belongs to field of communication technology, a kind of photoelectric conversion device and communication system are provided.The device includes: signal emission module and signal receiving module；Wherein, signal emission module includes: isolation input end, coding unit and electrooptic switching element, coding unit is encoded the received fiber data in isolation input end to obtain coded data and is sent to electrooptic switching element, and coded data is converted to fiber data signal and emitted by electrooptic switching element；Signal receiving module includes: photoelectric conversion unit, decoding unit and isolation output end, received optical fiber transmission data are converted to parallel signal and are sent to decoding unit by photoelectric conversion unit, and decoding unit is decoded parallel signal to obtain transmission data and be exported by output end to external photoelectric mixed cable.The present invention is low in energy consumption, and size is small, realizes the safety of signal and quickly transmission, synchronous signal transmitting module and signal receiving module can be used as transmission link, have double optical fiber backup functionalities.
Description
Technical field
The invention belongs to fields of communication technology, are to be related to a kind of photoelectric conversion device and communication system more specifically.
Background technique
When air missile weapon system carries out task, cable connection should be carried out between different equipments according to task needs,
Such as in carrying out the test of missile, the cable that need to be connected between missile station truck and test of missile control vehicle, and the electricity connected
Cable quantity is more, weight weight, influences the expansion of equipment and removes the speed of receipts, increases the work difficulty and working strength of manipulator.
To cope with problem above, solved using the signal transmission technology of photoelectricity mixing in the prior art.Fiber optic communication is with light wave
As carrier wave, a kind of emerging cable communicating technology using optical fiber as information delivery media, have communication digit rate is high, loss is small,
The advantages that message capacity is big, Fibre Optical Communication Technology has been applied widely at present.
It realizes fiber optic communication, needs photoelectric conversion component to realize the mutual conversion of electric signal and optical signal.But it is existing
Photoelectric conversion device conversion signaling security it is poor, and influence if breaking down the communication of whole route, stability is poor.
Summary of the invention
In consideration of it, the present invention provides a kind of photoelectric conversion device and communication system, it is intended to which photoelectric conversion fills in the prior art
The communication that whole route is influenced when breaking down is set, stability is poor, and transmits the problem of the safety difference of signal.
The first aspect of the embodiment of the present invention provides a kind of photoelectric conversion device, comprising: signal emission module and signal
Receiving module；The signal emission module and the signal receiving module are in parallel；
Wherein, the signal emission module includes: isolation input end, coding unit and electrooptic switching element；
The coding unit, for being encoded the received fiber data in isolation input end to obtain coded data,
And the coded data is sent to the electrooptic switching element；
The electrooptic switching element, for the coded data to be converted to the transmitting of fiber data signal；
The signal receiving module includes: photoelectric conversion unit, decoding unit and isolation output end；
The photoelectric conversion unit is sent to the decoding for received optical fiber transmission data to be converted to parallel signal
Unit；
The decoding unit obtains transmission data for the parallel signal to be decoded, and defeated by the isolation
Outlet exports the transmission data to external photoelectric mixed cable.
Optionally, the isolation input end include: first end, second end, first resistor, second resistance and the first optocoupler every
From element；
The first end at the isolation input end receives the fiber data, and second end is connect with the coding unit；
The first resistor is connect with the first end at the isolation input end, the second end of the first resistor respectively with institute
The first end for stating second resistance is connected with the primary side input terminal of the first light-coupled isolation element；
The second end of the second resistance is connect with the primary side output end of the first light-coupled isolation element, second electricity
The second end of resistance is also grounded；
The secondary side input terminal of the first light-coupled isolation element and the second end at the isolation input end and external power supply connect
It connects, the secondary side output end ground connection of the first light-coupled isolation element.
Optionally, the electrooptic switching element includes: serial conversion subelement and electro-optic conversion subelement；
The serial conversion subelement is used to the coded data being converted to serial data；
The electro-optic conversion subelement is used to being converted to the serial data into the transmitting of fiber data signal.
Optionally, the electro-optic conversion subelement includes: input terminal, laser modulation circuitry, APC (Automatic Power
Control, automated power control) circuit, biasing circuit, photodiode and laser emitting elements；
The input terminal of the electro-optic conversion subelement is connect with the serial conversion subelement；
The first input end of the laser modulation circuitry is connect with the input terminal of the electro-optic conversion subelement, the laser
Second input terminal of modulation circuit is connect with the first output end of the APC circuit, the output end of the laser modulation circuitry with
The cathode of the laser emitting elements connects；
The input terminal of the APC circuit is connect with the anode of the photodiode, the second output terminal of the APC circuit
It is connect with the input terminal of the biasing circuit；
The output end of the biasing circuit is connect with the cathode of the laser emitting elements；
The anode of the laser emitting elements and the cathode of the photodiode are connect with external power supply.
Optionally, the photoelectric conversion unit includes: photoelectric conversion subelement and Parallel transformation subelement；
The photoelectric conversion subelement is used to received optical fiber transmission data being converted to electric signal；
The Parallel transformation subelement is used to be converted to the electric signal parallel signal and is sent to the decoding list
Member.
Optionally, the photoelectric conversion subelement includes: laser acquisition element, mutual conductance amplifying circuit, filter circuit, output
Buffer circuit, signal deteching circuit, the first warning element and output end；
The laser acquisition element, the mutual conductance amplifying circuit, the filter circuit, the output buffer and described
The output end of photoelectric conversion subelement is sequentially connected, and the output end of the photoelectric conversion subelement exports the electric signal；
The test side of the signal deteching circuit is connect with the output end of the filter circuit, the signal deteching circuit
Output end is connect with first warning element；
The signal deteching circuit opens when by the signal for measuring the filter circuit to first warning element transmission
Dynamic signal, first warning element work according to the enabling signal.
Optionally, the isolation output end includes: 3rd resistor and the second light-coupled isolation element；
The first end of the 3rd resistor is connect with the decoding unit, the second end of the 3rd resistor and described second
The primary side input terminal of light-coupled isolation element connects；
The primary side output end of the second light-coupled isolation element is grounded, the secondary side input terminal of the second light-coupled isolation element
It is connect with the external photoelectric mixed cable with secondary side output end.
Optionally, the isolation output end further include: the 4th resistance, third light-coupled isolation element and the second warning element；
The first end of 4th resistance is connect with the decoding unit, the second end and the third of the 4th resistance
The primary side input terminal of light-coupled isolation element connects；
The primary side output end of the third light-coupled isolation element is grounded, the secondary side input terminal of the third light-coupled isolation element
Connect with external power supply, the secondary side output end of the third light-coupled isolation element respectively with the external photoelectric mixed cable and described
The first end of second warning element connects；The second end of second warning element is grounded.
Optionally, the photoelectric conversion device further include: power isolation module；
The power isolation module is connect with the signal emission module and the signal receiving module respectively；External power supply
It is that the signal emission module and the signal receiving module are powered by the power isolation module.
The second aspect of the embodiment of the present invention provides a kind of communication system, including photoelectric mixed cable, further include with it is described
Photoelectric mixed cable connection above-described embodiment first aspect provide it is any as described in photoelectric conversion device.
The beneficial effect of photoelectric conversion device and communication system compared with prior art is in the embodiment of the present invention: device
It include mainly signal emission module and signal receiving module, size is small, and it is low in energy consumption, and signal emission module and signal receiving module
Parallel connection, can be used as transmission link, have double optical fiber backup functionalities；The coding unit of signal emission module is by isolation input
Received fiber data is held to be encoded to obtain coded data, coded data is converted to fiber data signal by electrooptic switching element
Transmitting is, it can be achieved that the stable transmission of signals security；Received optical fiber is transmitted data by the photoelectric conversion unit of signal receiving module
It is converted to parallel signal and is sent to decoding unit, decoding unit is decoded parallel signal to obtain transmission data and passes through isolation
Output end exports the transmission that the safety and stability of signal is furthermore achieved to external photoelectric mixed cable.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of photoelectric conversion device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another photoelectric conversion device provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram at isolation input end provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of electro-optic conversion subelement provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of photoelectric conversion subelement provided in an embodiment of the present invention；
Fig. 6 is the circuit diagram of isolation output end provided in an embodiment of the present invention；
Fig. 7 is the circuit diagram of another isolation output end provided in an embodiment of the present invention；
Fig. 8 is the circuit diagram of power isolation module provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of communication system provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another communication system provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Embodiment one
Referring to Fig. 1, a kind of photoelectric conversion device provided in an embodiment of the present invention, comprising: signal emission module 100 and signal
Receiving module 200；Signal emission module 100 and signal receiving module 200 are in parallel.
Wherein, signal emission module 100 includes: isolation input end 110, coding unit 120 and electrooptic switching element 130；
Isolation input end 110, coding unit 120 and electrooptic switching element 130 are sequentially connected.
Coding unit 120 is used to be encoded the received fiber data in isolation input end 110 to obtain coded data, and will
The coded data is sent to electrooptic switching element 130；Electrooptic switching element 130, for the coded data to be converted to light
Fine data signal transmission.
Signal receiving module 200 includes: photoelectric conversion unit 210, decoding unit 220 and isolation output end 230；Photoelectricity turns
Unit 210, decoding unit 220 and isolation output end 230 is changed to be sequentially connected.
Photoelectric conversion unit 210, which is used to received optical fiber transmission data being converted to parallel signal, is sent to decoding unit
220；Decoding unit 220 is used to be decoded the parallel signal to obtain transmission data, and by the way that output end 230 is isolated by institute
Transmission data are stated to export to external photoelectric mixed cable.
Illustratively, the transmission of fiber data is described with two photoelectric conversion devices.Photoelectric conversion device 1 is as transmitting
Device, coding unit 120 are encoded the received fiber data in isolation input end 110 to obtain coded data and are sent to electric light
Coded data is converted to fiber data signal 1 and is transmitted to photoelectric mixed cable 1 by converting unit 130, electrooptic switching element 130；Its
In, what the received fiber data in isolation input end 110 can send for data beginning, can be photoelectric mixed cable in transmission process
It transmits.
Then, photoelectric conversion device 2 is used as reception device, and photoelectric conversion unit 210 receives the light that photoelectric mixed cable 1 transmits
Fine data-signal 1, then fiber data signal 1 (optical fiber transmission data) is converted to parallel signal 1 and sent out by photoelectric conversion unit 210
Decoding unit 220 is given, decoding unit 220 will be parallel using decoding algorithm corresponding with the encryption algorithm of coding unit 120
Signal 1 is decoded to obtain transmission data 2, and is exported by isolation output end 230 by data 2 are transmitted；Wherein, output end is isolated
The transmission data 2 of 230 outputs can be transmitted directly to data receiver, be received and saved by data receiver, can be with
The photoelectric mixed cable being sent in transmission process.
In addition, photoelectric conversion device 1 when signal emission module 100 breaks down, can use another way signal to connect
Module 200 is received, as reception device.Photoelectric conversion device 2 can use another when signal receiving module 200 breaks down
Signal emission module 100 all the way realize double optical fiber backup functionalities as emitter.
Above-mentioned photoelectric conversion device includes mainly signal emission module 100 and signal receiving module 200, and size is small, power consumption
It is low, and signal emission module 100 and signal receiving module 200 are connected in parallel, and can be used as transmission link, have double optical fiber backups
Function；The received fiber data in isolation input end 110 is encoded and is compiled by the coding unit 120 of signal emission module 100
Coded data is converted to the transmitting of fiber data signal, it can be achieved that the stable biography of signals security by code data, electrooptic switching element 130
It is defeated；Received optical fiber transmission data are converted to parallel signal and are sent to solution by the photoelectric conversion unit 210 of signal receiving module 200
Code unit 220, decoding unit 220 are decoded parallel signal to obtain transmission data and be exported extremely by isolation output end 230
The transmission of the safety and stability of signal has also may be implemented in external photoelectric mixed cable.
Optionally, the coding unit 120 of the present embodiment can be specifically used for: receive the received optical fiber in isolation input end 110
Data；The fiber data is encoded to obtain coded data using 8B/10B encryption algorithm；The coded data is sent
To electrooptic switching element 130.
For the reliability for guaranteeing transmission data, the bit error rate is reduced, the present embodiment encodes fiber data and transmits again, compiles
Code algorithm uses 8B/10B coding mode.Illustratively, 8B/10B encryption algorithm can resolve into continuous 8 fiber datas
Two groups, one group includes 3 data, and another group includes 5 data, and respectively obtaining one group by coding includes 4 data and another
Group includes the code of 6 data, so that the data of composition 10 are sent.
It being encoded using 8B/10B, keeps 0,1 quantity in signal almost the same, the continuous digit for occurring 0 or 1 is no more than 5, from
And the DC balance of link is realized, be conducive to serial data in the reduction of receiving end, it is ensured that the safety of data transmission, i.e. decoding mould
The decoded process of block 220 is then that 10 input datas are reduced to 8 original data bits.
It should be understood that encryption algorithm of the invention is not limited in 8B/10B encryption algorithm, can also add in an encoding process
Enter special code, to transmit data encryption, further helps receiving end to carry out data synchronization and reduction, can effectively inhibit error code
Generation, while ensure data transmission safety.
In one embodiment, referring to Fig. 3, isolation input end 110 may include: first end, second end, first resistor R1,
Second resistance R2 and the first light-coupled isolation element IC1.
The first end at isolation input end 110 receives the fiber data, and second end is connect with coding unit 120.
First resistor R1 is connect with the first end at isolation input end 110, and the second end of first resistor R1 is electric with second respectively
The first end of resistance R2 is connected with the primary side input terminal of the first light-coupled isolation element IC1.
The second end of second resistance R2 is connect with the primary side output end of the first light-coupled isolation element IC1, second resistance R2's
Second end is also grounded.
The secondary side input terminal of first light-coupled isolation element IC1 is connect with the second end at isolation input end 110 and external power supply,
The secondary side output end of first light-coupled isolation element IC1 is grounded.
Optionally, isolation input end 110 can also include resistance R0.The secondary side input terminal of first light-coupled isolation element IC1
It is connect by resistance R0 with external power supply VCC1.The voltage that resistance R0 can provide external power supply VCC1 divides, so that
External power supply VCC1 provides suitable voltage to the secondary side input terminal of the first light-coupled isolation element IC1, improves isolation input end 110
Stability.
Optionally, the first light-coupled isolation element IC1 can be the photoelectrical coupler of GH3203J-4 model.GH3203J-4 type
Number photoelectrical coupler stability it is high, it is low in energy consumption.Received fiber data is isolated at isolation input end 110, and removal passes
Signal interference during defeated, so that fibre optic data transmission is more stable and accurate.
In one embodiment, referring to fig. 2, electrooptic switching element 130 includes: serial conversion subelement 131 and electro-optic conversion
Subelement 132.Serial conversion subelement 131 is connect with coding unit 120 and electro-optic conversion subelement 132.Serial conversion is single
Member 131 is for being converted to serial data for the coded data；Electro-optic conversion subelement 132 is for converting the serial data
For the transmitting of fiber data signal.
Optionally, referring to fig. 4, electro-optic conversion subelement 132 includes: input terminal, laser modulation circuitry 1321, APC circuit
1322, biasing circuit 1323, photodiode D1 and laser emitting elements 1324.
The input terminal of electro-optic conversion subelement 132 is connect with serial conversion subelement 131.The of laser modulation circuitry 1321
One input terminal is connect with the input terminal of electro-optic conversion subelement 132, the second input terminal and APC circuit of laser modulation circuitry 1321
1322 the first output end connection, the output end of laser modulation circuitry 1321 are connect with the cathode of laser emitting elements 1324.
The input terminal of APC circuit 1322 is connect with the anode of photodiode D1, the second output terminal of APC circuit 1322 with
The input terminal of biasing circuit 1323 connects.The output end of biasing circuit 1323 is connect with the cathode of laser emitting elements 1324.Swash
The anode of photocell 1324 is connect with external power supply VCC_LD, and the cathode and external power supply VCC_PD of photodiode D1 connects
It connects.
Optionally, laser emitting elements 1324 can use DFB (Distributed Feedback Laser) laser.
Distributed Feedback Laser have extraordinary monochromaticjty (i.e. spectral purity), transmission range is long, its line width can generally accomplish 1MHz with
It is interior, and there is very high side mode suppression ratio (Side-Mode Suppression Ratio, SMSR), up to 40-50dB
More than.
Laser modulation circuitry 1321 modulates the received laser signal of laser emitting elements 1324, changes laser signal output
Characteristic so that laser signal have better temporal coherence and spatial coherence, such as change output laser signal it is strong
Degree or frequency etc..Laser modulation circuitry 1321 finally make output laser signal monochromaticjty it is good, the angle of divergence is small, and have compared with
Good temporal coherence and spatial coherence.The present embodiment to the specific structure of laser modulation circuitry 1321 without limitation, can be with
It is Laser Modulation interlock circuit, is also possible to the devices such as laser modulator.
APC circuit 1322 is used for the Output optical power of stabilized lasers radiated element 1324, it is made not increase and make with temperature
With the time increase and changes, while can prevent due to input signal is too big or it is too small and make laser emitting elements 1324 occur satisfy
And/or blocking.Optionally, APC circuit 1322 can be average light power control type APC circuit.
In one embodiment, referring to fig. 2, photoelectric conversion unit 210 includes: photoelectric conversion subelement 211 and Parallel transformation
Subelement 212.Parallel transformation subelement 212 is connect with decoding unit 220 and photoelectric conversion subelement 211.Photoelectric conversion is single
Member 211 is for being converted to electric signal for received optical fiber transmission data；Parallel transformation subelement 212 is used to turn the electric signal
It is changed to parallel signal and is sent to decoding unit 220.
Optionally, referring to Fig. 5, photoelectric conversion subelement 211 includes: laser acquisition element 2111, mutual conductance amplifying circuit
2112, filter circuit 2113, output buffer 2114, signal deteching circuit 2115, the first warning element Y1 and output end.
Laser acquisition element 2111, mutual conductance amplifying circuit 2112, filter circuit 2113, output buffer 2114 and photoelectricity
The output end of conversion subunit 211 is sequentially connected, and the output end of photoelectric conversion subelement 211 exports the electric signal；Laser is visited
Element 2111 is surveyed also to connect with external power supply VCC_P.
The test side of signal deteching circuit 2115 is connect with the output end of filter circuit 2113, signal deteching circuit 2115
Output end is connect with the first warning element Y1；Signal deteching circuit 2115 will be when that will measure the signal of filter circuit 2113 to first
Warning element Y1 sends enabling signal, and the first warning element Y1 works according to the enabling signal.
Optionally, PIN highly-sensitive detector can be used in laser acquisition element 2111.
The low current signal that mutual conductance amplifying circuit 2112 can export laser acquisition element 2111 amplifies, and has
The features such as structure is simple, high gain, low noise.Optionally, mutual conductance amplifying circuit 2112 can be integrated trsanscondutance amplifier.
Output buffer 2114 is used as a buffer circuit, and by pressure limiting, current limliting, the loss of isolation output end is shifted
It into buffer circuit, is then depleted to again on the resistance of buffer circuit, or tries to feed back into power supply again by buffer circuit,
Further increase the stability of photoelectric conversion device.The present embodiment to the specific structure of output buffer 2114 without limitation.
In one embodiment, referring to Fig. 6, it includes: 3rd resistor R3 and the second light-coupled isolation element that output end 230, which is isolated,
IC2。
The first end of 3rd resistor R3 is connect with decoding unit 220, the second end of 3rd resistor R3 and the second light-coupled isolation
The primary side input terminal of element IC2 connects；The primary side output end of second light-coupled isolation element IC2 is grounded, the second light-coupled isolation element
The secondary output end in input terminal and pair of IC2 is connect with the external photoelectric mixed cable.
Optionally, the secondary output end in input terminal and pair of the second light-coupled isolation element IC2 includes switch control element,
Such as relay, control the output of data.For example, relay can using JGC-4411 model light MOS solid-state relay into
Row driving, driving current > 20mA, contact precise control, stability are more preferable.
In another embodiment, referring to Fig. 7, be isolated output end 230 can also include: the 4th resistance R4, third optocoupler every
From element IC3 and the second warning element Y2.Whether the second warning element Y2 can prompt the staff device in working condition,
Or can prompt whether staff's device is working normally, so that staff understands data transmission scenarios and dress in time
The working condition set.
The first end of 4th resistance R4 is connect with decoding unit 220, the second end and third light-coupled isolation of the 4th resistance R4
The primary side input terminal of element IC3 connects；The primary side output end of third light-coupled isolation element IC3 is grounded, third light-coupled isolation element
The secondary side input terminal of IC3 is connect with external power supply, the secondary side output end of third light-coupled isolation element IC3 respectively with the exterior light
The first end connection of electricity mixing cable and the second warning element Y2；The second end of second warning element Y2 is grounded.
The isolation output end 230 of the present embodiment may include that output band carries (the second warning element Y2) circuit and output contact
The interference of outer signals can be effectively isolated in two kinds of forms of circuit, improve the stability of device transmission data.
In one embodiment, referring to fig. 2, the photoelectric conversion device further include: power isolation module 300.Isolated from power
Module 300 is connect with signal emission module 100 and signal receiving module 200 respectively, and external power supply passes through power isolation module 300
It powers for signal emission module 100 and signal receiving module 200, is provided for signal emission module 100 and signal receiving module 200
Suitable voltage.
Optionally, referring to Fig. 8, power isolation module 300 may include: first capacitor C1, polar capacitor CA, DC/DC every
From unit 310, zener diode Z1, the first inductance L1, the second inductance L2 and the second capacitor C2.
Specifically, the first end of first capacitor C1 respectively with the input terminal of power isolation module 300, polar capacitor CA
One end is connected with the first input end of DC/DC isolated location 310, the second end of the second capacitor C1 respectively with polar capacitor CA
Two ends are connected with the second input terminal of DC/DC isolated location 310, and the second end of the second capacitor C1 is also grounded.Zener diode Z1
Anode connect respectively with the first end of the second output terminal of DC/DC isolated location 310 and the second inductance L2, zener diode Z1
Cathode connect respectively with the first end of the first output end of DC/DC isolated location 310 and the first inductance L1；First inductance L1's
Second end is connect with the output end of the first end of the second capacitor C2 and power isolation module 300 respectively, and the second of the second inductance L2
End is connect with the second end of the second capacitor C2 and ground terminal.
Filter capacitor (first capacitor C1 and polar capacitor CA) is arranged in 300 input terminal of power isolation module, reconnects DC/DC
Isolated location 310, output end configure transient voltage suppressor (zener diode Z1) and filter circuit (the first inductance L1, second
Inductance L2 and the second capacitor C2), it can effectively inhibit common mode and DM EMI, reduce power input noise, improve photoelectric conversion dress
The anti-interference ability set.The present embodiment to the specific structure of DC/DC isolated location 310 without limitation.
In above-described embodiment, device mainly includes signal emission module 100 and signal receiving module 200, and size is small, power consumption
It is low, and signal emission module 100 and signal receiving module 200 are connected in parallel, and can be used as transmission link, have double optical fiber backups
Function；The received fiber data in isolation input end 110 is encoded and is compiled by the coding unit 120 of signal emission module 100
Coded data is converted to the transmitting of fiber data signal, it can be achieved that the stable biography of signals security by code data, electrooptic switching element 130
It is defeated；Received optical fiber transmission data are converted to parallel signal and are sent to solution by the photoelectric conversion unit 210 of signal receiving module 200
Code unit 220, decoding unit 220 are decoded parallel signal to obtain transmission data and be exported by the way that output end is isolated to outside
The transmission of the safety and stability of signal has also may be implemented in photoelectric mixed cable.
Embodiment two
A photoelectric conversion device provided based on the above embodiment, a kind of communication system present embodiments provided.It is described
Communication system includes photoelectric mixed cable, which is characterized in that further includes being connect with the photoelectric mixed cable such as above-described embodiment one
Any one photoelectric conversion device of offer, it may have beneficial effect possessed by above-mentioned implementation one.
Specifically, photoelectric conversion device can both do receiving module referring to Fig. 9, transmitting module, photoelectric conversion can also be done
Photoelectric mixed cable is connected between device, realizes fiber optic communication.Number of the communication system of the present embodiment for photoelectric conversion device
It without limitation, can be multiple, or two.
Illustratively, referring to Figure 10, the communication system of the present embodiment is also used as relief cable and carries out data transmission, main
Include the connector, photoelectric conversion device and photoelectric mixed cable with cable connection, can also include the cable disk of photoelectric mixed cable,
Cable disk can arrange excessive cable, so that the line clear of entire communication system, and then data transmission is stablized.Wherein, it connects
Device can select the connector of JY27467T17F35PH model or J1784/17-16N06 model.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of photoelectric conversion device characterized by comprising signal emission module and signal receiving module；The signal hair
It penetrates module and the signal receiving module is in parallel；
Wherein, the signal emission module includes: isolation input end, coding unit and electrooptic switching element；
The coding unit obtains coded data for being encoded the received fiber data in isolation input end, and will
The coded data is sent to the electrooptic switching element；
The electrooptic switching element, for the coded data to be converted to the transmitting of fiber data signal；
The signal receiving module includes: photoelectric conversion unit, decoding unit and isolation output end；
The photoelectric conversion unit is sent to the decoding list for received optical fiber transmission data to be converted to parallel signal
Member；
The decoding unit obtains transmission data for the parallel signal to be decoded, and passes through the isolation output end
The transmission data are exported to external photoelectric mixed cable.
2. photoelectric conversion device as described in claim 1, which is characterized in that the isolation input end includes: first end, second
End, first resistor, second resistance and the first light-coupled isolation element；
The first end at the isolation input end receives the fiber data, and second end is connect with the coding unit；
The first resistor is connect with the first end at the isolation input end, and the second end of the first resistor is respectively with described
The first end of two resistance is connected with the primary side input terminal of the first light-coupled isolation element；
The second end of the second resistance is connect with the primary side output end of the first light-coupled isolation element, the second resistance
Second end is also grounded；
The secondary side input terminal of the first light-coupled isolation element is connect with the second end at the isolation input end and external power supply, institute
State the secondary side output end ground connection of the first light-coupled isolation element.
3. photoelectric conversion device as described in claim 1, which is characterized in that the electrooptic switching element includes: serial conversion
Subelement and electro-optic conversion subelement；
The serial conversion subelement is used to the coded data being converted to serial data；
The electro-optic conversion subelement is used to being converted to the serial data into the transmitting of fiber data signal.
4. photoelectric conversion device as claimed in claim 3, which is characterized in that the electro-optic conversion subelement include: input terminal,
Laser modulation circuitry, automated power control APC circuit, biasing circuit, photodiode and laser emitting elements；
The input terminal of the electro-optic conversion subelement is connect with the serial conversion subelement；
The first input end of the laser modulation circuitry is connect with the input terminal of the electro-optic conversion subelement, the Laser Modulation
Second input terminal of circuit is connect with the first output end of the APC circuit, the output end of the laser modulation circuitry with it is described
The cathode of laser emitting elements connects；
The input terminal of the APC circuit is connect with the anode of the photodiode, the second output terminal of the APC circuit and institute
State the input terminal connection of biasing circuit；
The output end of the biasing circuit is connect with the cathode of the laser emitting elements；
The anode of the laser emitting elements and the cathode of the photodiode are connect with external power supply.
5. photoelectric conversion device as described in claim 1, which is characterized in that the photoelectric conversion unit includes: photoelectric conversion
Subelement and Parallel transformation subelement；
The photoelectric conversion subelement is used to received optical fiber transmission data being converted to electric signal；
The Parallel transformation subelement is sent to the decoding unit for the electric signal to be converted to the parallel signal.
6. photoelectric conversion device as claimed in claim 5, which is characterized in that the photoelectric conversion subelement includes: that laser is visited
Survey element, mutual conductance amplifying circuit, filter circuit, output buffer, signal deteching circuit, the first warning element and output end；
The laser acquisition element, the mutual conductance amplifying circuit, the filter circuit, the output buffer and the photoelectricity
The output end of conversion subunit is sequentially connected, and the output end of the photoelectric conversion subelement exports the electric signal；
The test side of the signal deteching circuit is connect with the output end of the filter circuit, the output of the signal deteching circuit
End is connect with first warning element；
The signal deteching circuit sends starting letter to first warning element when that will measure the signal of the filter circuit
Number, first warning element works according to the enabling signal.
7. such as photoelectric conversion device as claimed in any one of claims 1 to 6, which is characterized in that the isolation output end includes: the
Three resistance and the second light-coupled isolation element；
The first end of the 3rd resistor is connect with the decoding unit, the second end of the 3rd resistor and second optocoupler
The primary side input terminal of isolation element connects；
The primary side output end of the second light-coupled isolation element is grounded, the secondary side input terminal and pair of the second light-coupled isolation element
Side output end is connect with the external photoelectric mixed cable.
8. such as photoelectric conversion device as claimed in any one of claims 1 to 6, which is characterized in that the isolation output end further include:
4th resistance, third light-coupled isolation element and the second warning element；
The first end of 4th resistance is connect with the decoding unit, the second end of the 4th resistance and the third optocoupler
The primary side input terminal of isolation element connects；
The primary side output end of the third light-coupled isolation element is grounded, the secondary side input terminal of the third light-coupled isolation element and outer
The connection of portion's power supply, the secondary side output end of the third light-coupled isolation element respectively with the external photoelectric mixed cable and described second
The first end of warning element connects；The second end of second warning element is grounded.
9. such as photoelectric conversion device as claimed in any one of claims 1 to 6, which is characterized in that the photoelectric conversion device also wraps
It includes: power isolation module；
The power isolation module is connect with the signal emission module and the signal receiving module respectively；External power supply passes through
The power isolation module is that the signal emission module and the signal receiving module are powered.
10. a kind of communication system, including photoelectric mixed cable, which is characterized in that further include connect with the photoelectric mixed cable as
The described in any item photoelectric conversion devices of claim 1 to 9.
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| CN201811416290.2A CN109450549A (en) | 2018-11-26 | 2018-11-26 | Photoelectric conversion device and communication system |
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| CN201811416290.2A CN109450549A (en) | 2018-11-26 | 2018-11-26 | Photoelectric conversion device and communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865779A (en) * | 2021-01-06 | 2021-05-28 | 季华实验室 | Signal conversion circuit and conversion device |
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Application publication date: 20190308 |