CN104052548B - A kind of SFP optical module for power equipment communication - Google Patents
A kind of SFP optical module for power equipment communication Download PDFInfo
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- CN104052548B CN104052548B CN201410279303.1A CN201410279303A CN104052548B CN 104052548 B CN104052548 B CN 104052548B CN 201410279303 A CN201410279303 A CN 201410279303A CN 104052548 B CN104052548 B CN 104052548B
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Abstract
A kind of SFP optical module for power equipment communication of disclosure; it includes laser drive unit, amplifier unit, power subsystem, upper electromechanical interface circuit, light transmission interface assembly and receiving interface of optical assembly, and this SFP optical module also includes surge protection unit, microcontroller, power signal collecting unit, sends signal level gain control unit, received signal level gain control unit；Surge protection unit is connected with upper electromechanical interface circuit, power subsystem, microcontroller, transmission signal level gain control unit, amplifier unit respectively; microcontroller is connected with power signal collecting unit, transmission signal level gain control unit, received signal level gain control unit respectively; power signal collecting unit is connected with laser drive unit, amplifier unit respectively; laser drive unit is connected with light transmission interface assembly, and received signal level gain control unit is connected with amplifier unit, receiving interface of optical assembly respectively.
Description
Technical field
The present invention relates to the technical field of fiber optic communication, particularly relate to a kind of for power equipment communication
SFP optical module.
Background technology
First provide the English abbreviation of portion of techniques term, full name and Chinese herein to look like:
ADC (Analog to Digital Converter) Analog-digital Converter
APD (Avalanche Photo Diode) avalanche photodide
DAC (Digital to Analog Converter) digital-to-analogue conversion
EML (Electroabsorption-Modulated-Laser) Electroabsorption Modulated Laser
SFP (Small From-Factor Pluggable) SFP optical module
SFP+ (Small From-Factor Pluggable Plus) enhancement mode SFP optical mode
Block
PID (proportion, integration, differentiation) ratio, integration, differential
Control strategy
Optical module is a kind of optics for opto-electronic conversion, and SFP is a kind of encapsulation shape of optical module
Formula, can be divided into the standards such as 155M/622M/1.25G/2.125G/4.25G/8G/10G according to transfer rate.
SFP protocol specification is mainly IEEE802.3 and SFF-8472.SFP+ optical module is at SFP optical module
On the basis of develop, it is possible to adapt to higher data rate.
Along with the development of supertension, UHV transmission and intelligent grid, more and more in power equipment
Use Fibre Optical Communication Technology, such as net tunes, province heighten in pressure (330-500kV) electrical network fiber optic communication,
OPGW optical (Optical Fiber in 330-500kV supergrid
Composite Overhead Ground Wire), optic communication is complete in 110-220kV high-voltage fence
Dielectric, self-supporting formula ADSS (All Dielectric Self-Supporting) optical cable etc., it is therefore desirable to
Supporting a large amount of light transmission-reception port, the demand of optical module is the most growing.
There are some particular/special requirements in the optical module that power system device communication uses.One, power equipment
Long-term not power-off is needed to run, if power consumption is big, weak heat-dissipating, optical module internal temperature will be caused higher,
Module performance declines, and the optical device life-span reduces, under serious conditions by make the Primary Component of optical module due to
Temperature is too high and damages；Its two, due to thunderbolt, switching overvoltage, and high and low pressure equipment is mutual
Between a large amount of electromagnetic coupled interference, there is higher surge risk than conventional communication device in power equipment,
This easily causes the Primary Component of optical module excessive and damage due to surge.
At present about the known patent having solution low-power consumption of improvement project of SFP or SFP+ optical module.Example
Such as file CN102298401 (ZL201110133778.6), the program uses in optical module circuit
Increase thermoelectric refrigerator, APD high voltage control unit and temperature collection circuit, the method for DAC,
Light is sent and is operated temperature control with receiving interface assembly.The advantage of the method is to dock T-R
Send circuit realiration full temperature control, remarkably productive in SFP+ high-speed module, but the program mainly towards
Low temperature control, it is impossible to solve power problems, surge impact problem can not be solved, it is impossible to entirely appropriate
Power equipment communication is required.File CN101726810 for another example, the program uses half refrigeration modes,
Laser assembly is divided multiple temperature range, by microcontroller for each temperature range, utilizes soft
Part PID controls ring and realizes homoiothermic, although temperature control is also useful for service life to extending optical module, but the party
Case still considers deficiency to optical module power problems.
Summary of the invention
For overcoming the defect of prior art, the technical problem to be solved in the present invention there is provided a kind of for
The SFP optical module of power equipment communication, it can effectively suppress optical module electrical interface input wave
Gush, reduce optical module power consumption.
The technical scheme is that this SFP optical module for power equipment communication,
It includes laser drive unit, amplifier unit, power subsystem, upper electromechanical interface circuit, light
Transmission interface assembly and receiving interface of optical assembly, this SFP optical module also includes surge protection list
Unit, microcontroller, power signal collecting unit, transmission signal level gain control unit, reception letter
Number electric-level gain control unit；Surge protection unit respectively with upper electromechanical interface circuit, power subsystem,
Microcontroller, transmission signal level gain control unit, amplifier unit connect, and microcontroller is respectively
With power signal collecting unit, transmission signal level gain control unit, received signal level gain control
Unit processed connects, and power signal collecting unit is connected with laser drive unit, amplifier unit respectively,
Laser drive unit is connected with light transmission interface assembly, and received signal level gain control unit is respectively
It is connected with amplifier unit, receiving interface of optical assembly.
Signal is had to be connected owing to adding surge protection unit and microcontroller with surge protection unit,
It is possible to prevent the surge signal destruction to microcontroller ports；Due to the present invention circuit arrangement not
Use Laser Drive and the integrated chip of amplifier of monolithic transceiver, so can be the most right
The power consumption of optical module transmission and reception circuit is controlled, thus reduces optical module power consumption.
Accompanying drawing explanation
Fig. 1 is that the structure for the SFP optical module of power equipment communication according to the present invention is shown
It is intended to.
Fig. 2 is the circuit of the peak voltage current sink circuit according to a preferred embodiment of the present invention
Figure.
Fig. 3 is inserting for the small-sized of power equipment communication according to a preferred embodiment of the present invention
The light pulling out optical module sends process power control schematic diagram.
Fig. 4 is inserting for the small-sized of power equipment communication according to a preferred embodiment of the present invention
The light-receiving process power pulling out optical module controls schematic diagram.
Detailed description of the invention
As it is shown in figure 1, this SFP optical module for power equipment communication, it includes swashing
Light device driver element, amplifier unit, power subsystem, (upper in Fig. 1 of upper electromechanical interface circuit
Position electromechanical interface), light transmission interface assembly and receiving interface of optical assembly, this SFP optical module is also
Including surge protection unit, microcontroller, power signal collecting unit, (power signal in Fig. 1 is adopted
Collection), send signal level gain control unit (the transmission signal level gain control in Fig. 1), connect
Collection of letters electric-level gain control unit (the received signal level gain control in Fig. 1)；Surge protection list
Unit respectively with upper electromechanical interface circuit, power subsystem, microcontroller, transmission signal level gain control
Unit processed, amplifier unit connect, microcontroller respectively with power signal collecting unit, send signal
Electric-level gain control unit, received signal level gain control unit connect, power signal collecting unit
It is connected with laser drive unit, amplifier unit respectively, laser drive unit and light transmission interface
Assembly connect, received signal level gain control unit respectively with amplifier unit, receiving interface of optical group
Part connects.
Signal is had to be connected owing to adding surge protection unit and microcontroller with surge protection unit,
It is possible to prevent the surge signal destruction to microcontroller ports；Due to the present invention circuit arrangement not
Use Laser Drive and the integrated chip of amplifier of monolithic transceiver, so can be the most right
The power consumption of optical module transmission and reception circuit is controlled, thus reduces optical module power consumption..
Preferably, as in figure 2 it is shown, surge protection unit includes multiple peak voltage current sink circuit,
Each peak voltage current sink circuit includes resistance, electric capacity, inductance, diode, resistance, electric capacity,
Being exported by the diode of Opposite direction connection after inductance in parallel, outfan is connected with the negative electricity of diode.
Other can also be used to have absorption peak voltage and the circuit form of electric current.In the present invention, upper
When electromechanical interface circuit is 20 foot golden finger connector, surge protection unit can use the surge of many groups to inhale
Receipts circuit is constituted, to protect each pin interface of 20 foot golden finger electrical interfaces.Absorbing circuit group number can
Change, but the primitive form constituted without departing from the electric capacity shown in Fig. 2, resistance, inductance and diode.
Preferably, power subsystem includes filter circuit, in order to reduce the interference on power supply and noise, and
Produce the negative pressure needed for laser works in light transmission interface assembly.
Preferably, microcontroller is connected to received signal level gain control unit, merit by D/A circuit
Rate signal gathering unit is connected to microcontroller by A/D circuit, and micro controller unit passes through I2C interface
Communicating with host computer, microprocessor carries out logical judgment process according to PID strategy, is connect by I2C
Mouth agreement sends an instruction to send signal level gain control unit.PID strategy design parameter can be by making
User decides in its sole discretion.
Preferably, laser drive unit is EML laser driver, and receiving interface of optical assembly is that EML swashs
Light device.
Preferably, amplifier unit includes the pre-amplifier unit of series connection, limiting amplifier unit.
Preferably, laser driver unit, amplifier unit use Laser Drive and limited range enlargement one
The integrated chip of bodyization.
Preferably, upper electromechanical interface circuit is 20 foot golden finger connectors.
Preferably, during light sends, it is worth on the basis of the input voltage adjusting range of laser drive unit
80%～110%, during light-receiving, on the basis of the input voltage adjusting range of preamplifier value
85%～100%.Reference value is known.
Controlling as it is shown on figure 3, send process power for light, power signal collecting unit is from laser instrument
The peak point current regulation interface of driver element obtains current signal, connects from the level of laser drive unit
Mouth obtains voltage signal, calculates, obtain laser drive unit after digital-to-analog is changed
Power level.Being sent to after analog-digital conversion in microprocessor, microprocessor is according to PID again
Strategy carries out logical judgment process, sends an instruction to send signal level by I2C interface protocol and increases
Benefit control unit.Send signal level gain control unit reduce or improve laser drive unit
Supply input voltage, is achieved in light and sends the power control of process.PID strategy design parameter can be by making
User decides in its sole discretion.According to current chip technical merit and SFP protocol specification, input voltage adjusts model
Enclose substantially between 80%～110%.
As shown in Figure 4, controlling for light-receiving process power, power signal collecting unit is put in the past
The output port of big device obtains voltage signal, changes from the digital-analog signal within limiting amplifier
Circuit obtains current signal, is calculated the power level of amplifier unit.It is similar with the process of transmission,
Being sent to after analog-digital conversion in microprocessor, microprocessor is patrolled according to PID strategy again
Collect judgement to process, send an instruction to received signal level gain control unit by I2C interface protocol.
The voltage water of power compensating circuit in received signal level gain control unit regulation pre-amplifier unit
Flat, the power being achieved in light-receiving process controls.According to current chip technical merit and SFP agreement
Specification, the voltage adjusting range of pre-amplifier unit is substantially between 85%～100%.
By the above-mentioned technological means of the present invention, it is possible to achieve SFP optical module can resist the highest 6500V
Electrical interface surge voltage, longtime running under 1.25G standard and following transfer rate, mean power disappears
Consumption reduces by 10%～20%.The service life of optical module also can significantly extend.
The above, be only presently preferred embodiments of the present invention, not makees the present invention any pro forma
Limit, any simple modification that above example is made by every technical spirit according to the present invention, etc.
With change and modification, the most still belong to the protection domain of technical solution of the present invention.
Claims (8)
1., for a SFP optical module for power equipment communication, it includes laser drive unit, puts
Big device unit, power subsystem, upper electromechanical interface circuit, light transmission interface assembly and receiving interface of optical assembly,
It is characterized in that: this SFP optical module also includes surge protection unit, microcontroller, power signal
Collecting unit, transmission signal level gain control unit, received signal level gain control unit；Surge is protected
Protect unit respectively with upper electromechanical interface circuit, power subsystem, microcontroller, transmission signal level gain control
Unit processed, amplifier unit connect, microcontroller respectively with power signal collecting unit, send signal level
Gain control unit, received signal level gain control unit connect, and power signal collecting unit is respectively with sharp
Light device driver element, amplifier unit connect, and laser drive unit is connected with light transmission interface assembly, connects
Collection of letters electric-level gain control unit is connected with amplifier unit, receiving interface of optical assembly respectively；
Described surge protection unit includes multiple peak voltage current sink circuit, and each peak voltage electric current is inhaled
Receive circuit and include resistance, electric capacity, inductance, diode, by reversely connecting after resistance, electric capacity, inductance in parallel
The diode output connect, outfan is connected with the negative electricity of diode.
SFP optical module for power equipment communication the most according to claim 1, its feature exists
In: power subsystem includes filter circuit.
SFP optical module for power equipment communication the most according to claim 1, its feature exists
In: microcontroller is connected to received signal level gain control unit, power signal collection by D/A circuit
Unit is connected to microcontroller by A/D circuit, and micro controller unit is carried out with host computer by I2C interface
Communication, microprocessor carries out logical judgment process according to PID strategy, instruction is sent out by I2C interface protocol
Deliver to send signal level gain control unit.
SFP optical module for power equipment communication the most according to claim 1, its feature exists
In: laser drive unit is EML laser driver, and receiving interface of optical assembly is EML laser instrument.
SFP optical module for power equipment communication the most according to claim 1, its feature exists
In: amplifier unit includes the pre-amplifier unit of series connection, limiting amplifier unit.
SFP optical module for power equipment communication the most according to claim 5, its feature exists
In: laser driver unit, amplifier unit use Laser Drive and the integrated chip of limited range enlargement.
SFP optical module for power equipment communication the most according to claim 1, its feature exists
In: upper electromechanical interface circuit is 20 foot golden finger connectors.
SFP optical module for power equipment communication the most according to claim 5, its feature exists
In: during light sends, 80%～110 be worth on the basis of the input voltage adjusting range of laser drive unit
%, during light-receiving, 85%～100% be worth on the basis of the input voltage adjusting range of preamplifier.
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| CN201410279303.1A CN104052548B (en) | 2014-06-20 | 2014-06-20 | A kind of SFP optical module for power equipment communication |
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| CN201410279303.1A CN104052548B (en) | 2014-06-20 | 2014-06-20 | A kind of SFP optical module for power equipment communication |
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| CN104052548B true CN104052548B (en) | 2017-01-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104202092A (en) * | 2014-09-18 | 2014-12-10 | 长芯盛（武汉）科技有限公司 | Receiving, transmitting and controlling three-in-one chip applicable to SFP (small form-factor pluggable) + high-speed photoelectric communication |
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| GB2415785B (en) * | 2004-07-02 | 2006-11-22 | Ohm Ltd | Electromagnetic surveying |
| CN201639288U (en) * | 2010-04-06 | 2010-11-17 | 常州市创捷防雷电子有限公司 | Surge protection device capable of suppressing continuous pulse |
| CN202019359U (en) * | 2011-03-15 | 2011-10-26 | 成都新易盛通信技术有限公司 | Two-channel compact small pluggable optical module circuit |
| CN102298401B (en) * | 2011-05-23 | 2013-11-06 | 成都新易盛通信技术有限公司 | Long-distance SFP+ optical module |
| CN202094892U (en) * | 2011-05-23 | 2011-12-28 | 成都新易盛通信技术有限公司 | Long-distance SFP+ optical module |
| CN103647605B (en) * | 2011-06-14 | 2017-01-11 | 苏州旭创科技有限公司 | SFP + optical module |
| CN202172408U (en) * | 2011-07-08 | 2012-03-21 | 成都新易盛通信技术有限公司 | Low cost SFP module with high-precision digital diagnosis function |
| CN202309985U (en) * | 2011-11-03 | 2012-07-04 | 成都新易盛通信技术有限公司 | Dense wavelength division multiplexing 3G video SFP module |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964150A (en) * | 2006-11-30 | 2007-05-16 | 上海臻和防雷电气技术有限责任公司 | An active energy support surge protector |
| CN203086126U (en) * | 2012-12-05 | 2013-07-24 | 孙巍巍 | Novel surge protector |
| CN103855698A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN203984431U (en) * | 2014-06-20 | 2014-12-03 | 武汉鑫森华科技产业发展有限公司 | A kind of SFP optical module for power equipment communication |
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