CN202004910U - Intelligent and digital diagnostic video optical module - Google Patents
Intelligent and digital diagnostic video optical module Download PDFInfo
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- CN202004910U CN202004910U CN2011200072054U CN201120007205U CN202004910U CN 202004910 U CN202004910 U CN 202004910U CN 2011200072054 U CN2011200072054 U CN 2011200072054U CN 201120007205 U CN201120007205 U CN 201120007205U CN 202004910 U CN202004910 U CN 202004910U
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Abstract
The utility model relates to a video optical transceiver and specifically discloses an intelligent and digital diagnostic video optical module as a core module for the video optical transceiver. The intelligent and digital diagnostic video optical module comprises a controller, a receiving module and a transmitting receiver, wherein the receiving module is connected with the controller; the transmitting module is connected with the controller through a laser driver; a dual-cable serial interface controller is arranged in the controller; and a dual-cable serial interface is connected onto the dual-cable serial interface controller. An IIC interface is applied in the video optical module, and the module is packaged with SFP. The IIC interface is adopted to monitor five analog quantities of the video optical module: transmitting optical power (Tx_power), receiving optical power (Rx_power), module temperature (Temp), power supply voltage (Vcc), transmitting bias current (Tx_Bias) as well as warning and alarming states, state variables Tx_Fault and Rx_LOS and other information, for comprehensive analysis. A fault can be positioned to be within the module or on the line, to be on a local module or a far-end module.
Description
Technical field
The utility model relates to a kind of video optical multiplexer, is specifically related to the nucleus module-video optical module of video optical multiplexer.
Background technology
Video optical multiplexer is exactly 1 equipment that becomes light signal to transmit by fiber medium by various code conversion to the analog video signal of multichannel.The optical transceiver principle is modulated to signal on the light exactly, carries out video transmission by optical fiber.
Optical module is the core component of video optical multiplexer, comprises light-receiving and optical transmission module, is used for the transmitting-receiving of data.
Present video optical module also can only carry out the transmitting-receiving of data, can't monitor the optical fiber link performance index in real time, can't satisfy growing video monitoring specification requirement at present.
Video monitoring is the important component part of safety and protection system, and it is a kind of powerful general defensive character in all files.Video monitoring is directly perceived with it, accurately, in time and the information content abundant and be widely used in many occasions.In recent years, along with the develop rapidly of computer, network and image processing, transmission technology, the video monitoring technology has also had significant progress.Along with the video monitoring capacity improves constantly with monitor network increasingly, brought the increasingly sophisticated problem of communication link management work.The technical development of video optical module and video monitoring is complementary, and traditional video optical module can only carry out the transmitting-receiving of data, but can't monitor the optical fiber link performance index in real time.In case break down in the optical fiber link, can't find the fault occurrence positions fast, brought certain degree of difficulty to maintenance work, influence the reliability of supervisory control system.
The utility model content
In order to address the above problem, the purpose of this utility model is to provide a kind of intelligent digital diagnosis video optical module that can find the fault occurrence positions fast.
For achieving the above object, technical scheme that the utility model adopts is as follows:
A kind of intelligent digital diagnosis video optical module comprises controller, receiver module and sending module, and described receiver module is connected with described controller, and described sending module is connected with described controller by a laser driver; In described controller, be provided with a pair of cable serial interface controller; On described pair of cable serial interface controller, connect a pair of cable serial line interface.
Described intelligent digital diagnosis video optical module, this video optical module be encapsulated as the SFP encapsulating structure.
Described intelligent digital diagnosis video optical module also is provided with an analog to digital converter interface in its controller.
Described intelligent digital diagnosis video optical module, the power end of this video optical module also is in series with an electric source filter circuit.
Described intelligent digital diagnosis video optical module, the power end of described video optical module comprises VccR pin position and VccT pin position; Described electric source filter circuit comprises first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, first inductance and second inductance; The appearance value of described first electric capacity, second electric capacity and the 3rd electric capacity is 0.1 microfarad, and the appearance value of described the 4th electric capacity and the 5th electric capacity is 10 microfarads, and the sense value of described first inductance and described second inductance is 1 microhenry; Described VccR pin position is cascaded by first inductance and 3.3 volts of power supplys; Described VccT pin position is cascaded by second inductance and 3.3 volts of power supplys; Described first electric capacity is connected between described VccT pin position and the power supply ground; Described second electric capacity is connected between described VccR pin position and the power supply ground; Described the 4th electric capacity is connected between described VccR pin position and the power supply ground; Described the 3rd electric capacity is connected between 3.3 volts of power supplys and the power supply ground; Described the 5th electric capacity is connected between 3.3 volts of power supplys and the power supply ground.
Described intelligent digital diagnosis video optical module, the width of the pin of this video optical module is 0.6 millimeter, the spacing between the two adjacent pins is 0.8 millimeter.
Two cable serial interface controllers are the IIC interface again, are a kind of universal serial bus of two-way two-wire system, because it supports any IC manufacturing process, and can promote the efficient of hardware and the design of simplification circuit, and therefore numerous manufacturers all provide IIC compatible chip.
The utility model, in the video optical module, introduce the IIC interface, can monitor 5 analog quantitys of video optical module by this IIC interface: transmitting optical power (Tx_power), received optical power (Rx_power), module temperature (Temp), supply voltage (Vcc), transmission bias current (Tx_Bias) and warning and alarm status, information such as state variable Tx_Fault, Rx_LOS are carried out analysis-by-synthesis, can fault location be in module or on the circuit, be in local module or at remote end module.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the utility model electric source filter circuit.
Embodiment
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.
Embodiment 1:
As shown in Figure 1, present embodiment discloses a kind of intelligent digital diagnosis video optical module, comprise putting before controller-MCU, the receiver module-ROSA+PD, sending module-TOSALD+PD, laser driver, digital regulation resistance, memory cell and limiting amplifier, in described controller-MCU, be provided with analog to digital converter interface-ADC interface and a pair of cable serial interface controller-IIC controller; Receiver module is connected with controller, to controller transmission received optical power signal-RxPower; Described sending module is connected with described controller by laser driver, to controller transmission bias current signal-TxBias and transmitting optical power signal-TxPower; Described ADC interface also receives temperature T emp signal and power source voltage Vcc signal; Connect two cable serial line interfaces on the described pair of cable serial interface controller; This video optical module be encapsulated as the SFP encapsulating structure.
As shown in Figure 2, the power end of the utility model intelligent digital diagnosis video optical module also is in series with an electric source filter circuit, and the power end of described video optical module comprises VccR pin position and VccT pin position; Described electric source filter circuit comprises first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, first inductance L 1 and second inductance L 2; The appearance value of described first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3 is 0.1 microfarad, and the appearance value of described the 4th capacitor C 4 and the 5th capacitor C 5 is 10 microfarads, and the sense value of described first inductance L 1 and described second inductance L 2 is 1 microhenry; Described VccR pin position is cascaded by first inductance L 1 and 3.3 volts of power supplys; Described VccT pin position is cascaded by second inductance L 2 and 3.3 volts of power supplys; Described first capacitor C 1 is connected between described VccT pin position and the power supply ground; Described second capacitor C 2 is connected between described VccR pin position and the power supply ground; Described the 4th capacitor C 4 is connected between described VccR pin position and the power supply ground; Described the 3rd capacitor C 3 is connected between 3.3 volts of power supplys and the power supply ground; Described the 5th capacitor C 5 is connected between 3.3 volts of power supplys and the power supply ground.
Because the size restrictions of circuit board, in order to guarantee good insulation between each pin, the adjacent leads spacing is 0.8mm; Good being electrically connected property is arranged when guaranteeing the optical module hot plug, single golden finger can not be too thin, the about 0.6mm of its width.Golden finger connector needs excellent conducting performance, needs nickel plating in the above and gold-plated during making.
Chip that the utility model adopts is as follows:
MCU：C8051F330
Laser driver: MAXIM MAX3735A
BOSA:155M-2.5G laser/155M-2.5G detector
Limiting amplifier: MAXIM MAX3748
C8051F330 low-power consumption, high-performance MCU controller. support the A/D modular converter of a plurality of analog channels, and built-in temperature sensor and bandgap voltage reference passage, conversion speed is fast.Built-in IIC controller.
MAX3735A is a kind of SFF/SFP laser driver that meets the 8472MSA agreement fully, is fit to speed range 155Mbps～2.5Gbps, is fit to temperature range-40 ℃-+85 ℃.Have APC from motional feedback circuit and temperature-compensation circuit, the rising of signal and fall time can be applicable to drive the laser of FP, DFB, VCSEL type less than 150ps.
MAX3748 is a kind of limiting amplifier of high-gain, have the input voltage range of broad and good temperature-compensating, input difference sensitivity is 4mv at least, error rate BER can reach 10**12, alarm level compatible TTL, CMOS, the temperature range of using :-40 ℃～+ 85 ℃, be mainly used in SDH/SONET system and video monitoring.The MAX3748 operating rate is 155M～3.2Gbps.
The utility model comprises following 5 points substantially:
1. the video optical module provides IIC numerical diagnostic interface
Adopt the SFF-8472 agreement, by IIC numerical diagnostic interface, for system provides a kind of performance monitoring means.We can be by information prediction module life, fault location, the compatibility verification of IIC interface acquisition.Traditional video optical module adopts 1x9 multi-source tunneling, does not possess the numerical diagnostic condition.
2. up-downgoing speed is asymmetric
Upstream rate is 155M-2.5G, downstream rate tens K-100M.Up biography vision signal, descending biography data and Ethernet.
3. tenaculum hot-line insertion and extraction
Need not cut off the power supply and to change the video optical module in site of deployment, safeguard simple.The conventional video module need be returned equipment vendors and could be handled.
4. uplink module bandwidth self-adaption
Realize module Adaptive Transmission 1/2/4/8/16 road video and transfer of data first, applying flexible is changeable.The conventional video rate module is single.
5. adopt the mini little encapsulation of SFP
Module size is dwindled half, for the client greatly saves the space, improves integrated level.Traditional
Video module is of a size of this module of 2 times.
The utility model, the numerical diagnostic monitoring function of intelligent digital diagnosis video optical module mainly is that 5 simulation parameters such as the operating voltage, module temperature, bias current, emission luminous power, received optical power to optical transceiver module are gathered in real time and various pilot signals are monitored in real time, and the digitlization measurement result is carried out data analysis, processing and storage.Optical module can be supported hot plug, and whole numerical diagnostic process must satisfy SFF-8472 agreement and multi-source agreement MSA.In the SFF-8472 agreement, standard the detailed content of numerical diagnostic function.Monitoring and the various parameter signals of digitlization on the circuit board of optical module inside provide result or digitized measurement result and demarcation parameter through demarcating.These information are stored in the internal storage structure of standard, so that read by two cable serial line interfaces.SFF-8472 has kept the map addresses of original SFP/GBIC in the AOH memory cell, and has increased the A2H memory cell of one 256 byte newly.This new memory cell has also defined the condition and the flag bit of warning, alarm, the state mirror image of each pin, the memory space that limited digital control ability and user can write except parameter monitoring information is provided.
Intelligent video optical module provides a kind of parameter monitoring means of real-time estimate laser deterioration.The luminous power of optical module inside feeds back to laser driver, and power output is controlled on the stable level.But along with wearing out of laser, the quantum efficiency of laser can reduce, and luminous power can change.The control of luminous power is to realize by the bias current that changes laser, can predict the life-span of laser by the bias current of monitoring laser, and this method can be estimated the useful life of laser roughly.
Because the working temperature of the bias current of laser and module and operating voltage all have relation, so when setting bias current, need consider the influence of temperature T emp and power supply Vdd.In addition, to the monitoring of received optical power, can monitor the performance of circuit and distant transmitter.
In optical link, the occurrence positions of fault location is most important to the quick loading of business.In fault location, Tx_power, Rx_power, Temp, Vdd, the warning of Tx_Bias and alarm status, and the state variable Tx_Fault in the memory mirror and Rx_LOS carry out analysis-by-synthesis, can locate the link abort situation fast, be in module or on the line, is in local module or at remote end module.
Numerical diagnostic can be verified the compatibility of optical module, compatibility verification be exactly the operational environment of analysis module whether meet databook or with relevant operating such, in some cases, because environmental parameter exceeds databook or relevant standard, to cause module performance to descend, thereby transmission error code occur.The performance of module only just can be guaranteed under the operational environment of compatibility.
The general technical index that optical transceiver module will reach:
(1) is used for the optical fiber communication of short distance two-forty, operating rate 155Mbps～2.5Gbps.
(2) meet the normal structures such as electrical interface, optical interface and mechanical interface of multi-source agreement MSA, have the hot plug function, and meet the sequential index of MSA.
(3) provide and have intelligentized numerical diagnostic interface function, and compatible SFF-8472 agreement.
(4) meet IIC dual-wire communications agreement, have and advocate peace from communication pattern, rate can self check tests the speed.
(5) digital resistance compensates automatically, satisfies output stable average light power and extinction ratio.
(6) satisfy five monitor control indexs of simulating parameters, as shown in the table.
The monitor control index of five simulation parameters:
| Parameter | Required precision | Measuring range |
| The module temperature | ±2℃ | -40℃～85℃ |
| Operating voltage | ±100mV | 2.8V～3.6V |
| Bias current | ±10％ | 0mA～100mA |
| The emission luminous power | ±2dBm | -20dBm～-2dBm |
| Received optical power | ±2dBm | -30dBm～-3dBm |
The utility model up-downgoing hardware circuit design is as follows:
Up 2.5G emission: 1310nm 2.5G FP laser+laser driver MAX3735A
Up 2.5G receives: 1550nm 2.5G detector+limiting amplifier MAX3748
Diagnosis part: C8051F330
Descending 155M emission: 1310nm 155M FP laser+laser driver MAX3735A
Descending 155M receives: 1550nm 155M detector+limiting amplifier MAX3748
Numerical diagnostic MCU:C8051F330
The utility model will think over the external interference of power Vcc R and VccT, the surge current during as noise and hot plug when design optical module hardware circuit.When optical module inserted hot chassis, the power supply on the optical module circuit board and the filter capacitor of chip all were in low resistance state, and the transient impact electric current that flows to optical module circuit board from base plate is very high, may burn the components and parts on connector or the optical module.
The power supply of MSA protocol requirement two parts pin is 3.3V ± 5%, and maximum source current is 300mA, and the general filter network as shown in the figure that adopts carries out filtering interference signals, particularly surge current.Get difference between current when hot plug moment blocks current and module stability work and can not surpass 30mA, this filter network can guarantee that the surge current that hot plug produces can not surpass 30mA.
The utility model electrical interface adopts specific electric sequence, can reduce surge current by precharge, thus when reducing hot plug to the infringement of components and parts.When hot plug, set one and add and power down sequence, press the sequence power on of ground, power supply, holding wire during insertion; Order by holding wire, power supply, ground when extracting is cut off the power supply.When powering up,, can reduce the transient impact electric current effectively to the electric capacity precharge on the optical module circuit board before connecting system owing to add power supply plus signal line more earlier.In the power on/off process of power pin and signal pin, optical module is good earth all, helps static discharge, eliminates arc discharge and damages the problem of pin.
The intelligentized video optical module of the utility model is supported the hot plug function, promptly need not to cut off the electricity supply, and module just can be connected with equipment or disconnect, and the webmaster personnel with regard to scalable and extension system, can not cause what influence to the online user without shutdown system.The numerical diagnostic function of SFP optical transceiver module helps finding out the position of breaking down in the optical fiber link, predict by fault, business can be switched on the backup link, or replace suspicious device, thereby repair system under uninterrupted professional situation, simplify maintenance work, improve the reliability of system.
The utility model adds power down sequence in order to guarantee to plug, and the length of the dissimilar pin golden fingers of optical module electrical interface is different.
The utility model software section is the key that the video optical module can be realized the digital diagnostic monitoring function, has mainly finished data acquisition, data processing and data communication, and development environment adopts the Codewarrior platform.
The utility model optical module and monitoring of software have been formulated a communication handshake agreement, so that both sides can communicate by letter and the control of monitoring of software to optical module normally, as shown in the figure.If optical module do not recognize the monitoring of software that can write the flag byte value, then monitoring of software can only reading of data, can not revise the optical module data.
After monitoring of software detects optical module and powers on, just start the IIC scanning imaging system, to be arranged to read 1 time in 1 second, WriteMode is in wait state.After optical module powers on, after each module initialization, enter the major cycle body, carry out data acquisition and data processing.
The IIC module of monitoring of software is a holotype, and the IIC module of optical module is from pattern.The address of devices that sends slave when main frame is to iic bus, and slave detects the address of devices coupling, and then response is interrupted.If detecting main frame is reading mode, then slave starts the subprogram of WriteMode, sends data.The host-initiated receiving mode receives the data that slave sends over, data storing one by one.Monitoring of software will be when the optical module write data, the flag byte that must first transmission can write, and this byte is open to any monitoring of software, whether meets the condition that can write so that optical module detects monitoring of software.After detecting the sign that can write when optical module, optical module starts reads subprogram from IIC.What detect host-initiated when slave is WriteMode, and then slave switches to reading mode, so that receive data.
When monitoring of software has been changed one of warning and alarm threshold, parameter calibration and digital regulation resistance value, then must setting can write the flag bit of FLASH, and making into the sweep time that IIC reads 3 seconds.Optical module detects digital regulation resistance and is modified, and then calls change digital regulation resistance subprogram.Detect can write FLASH Status Flag byte after, then close to interrupt, start and write the FLASH subprogram, after the EP (end of program), open interruption, removing can be write the FLASH state flag bit.After monitoring of software collected and can write the FLASH state flag bit and be eliminated, changed to 1 second the sweep time that IIC is read, and asks when recovering normal scan.
More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. an intelligent digital diagnosis video optical module comprises controller, receiver module and sending module, and described receiver module is connected with described controller, and described sending module is connected with described controller by a laser driver, it is characterized in that:
In described controller, be provided with a pair of cable serial interface controller;
On described pair of cable serial interface controller, connect a pair of cable serial line interface.
2. intelligent digital diagnosis video optical module according to claim 1 is characterized in that:
This video optical module be encapsulated as the SFP encapsulating structure.
3. intelligent digital diagnosis video optical module according to claim 1 is characterized in that:
In described controller, also be provided with an analog to digital converter interface.
4. intelligent digital diagnosis video optical module according to claim 1 is characterized in that:
The power end of this video optical module also is in series with an electric source filter circuit.
5. intelligent digital diagnosis video optical module according to claim 4 is characterized in that:
The power end of described video optical module is provided with VccR pin position and VccT pin position;
Described electric source filter circuit comprises first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, first inductance and second inductance;
The appearance value of described first electric capacity, second electric capacity and the 3rd electric capacity is 0.1 microfarad, and the appearance value of described the 4th electric capacity and the 5th electric capacity is 10 microfarads, and the sense value of described first inductance and described second inductance is 1 microhenry;
Described VccR pin position is cascaded by first inductance and 3.3 volts of power supplys;
Described VccT pin position is cascaded by second inductance and 3.3 volts of power supplys;
Described first electric capacity is connected between described VccT pin position and the power supply ground;
Described second electric capacity is connected between described VccR pin position and the power supply ground;
Described the 4th electric capacity is connected between described VccR pin position and the power supply ground;
Described the 3rd electric capacity is connected between 3.3 volts of power supplys and the power supply ground;
Described the 5th electric capacity is connected between 3.3 volts of power supplys and the power supply ground.
6. intelligent digital diagnosis video optical module according to claim 1 is characterized in that:
The width of the pin of this video optical module is 0.6 millimeter, and the spacing between the two adjacent pins is 0.8 millimeter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200072054U CN202004910U (en) | 2011-01-10 | 2011-01-10 | Intelligent and digital diagnostic video optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200072054U CN202004910U (en) | 2011-01-10 | 2011-01-10 | Intelligent and digital diagnostic video optical module |
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| CN202004910U true CN202004910U (en) | 2011-10-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685465A (en) * | 2012-05-28 | 2012-09-19 | 成都微迪数字系统技术有限公司 | Video optical transmitter and receiver and detecting method for video optical transmitter and receiver |
| CN109150312A (en) * | 2018-08-17 | 2019-01-04 | 索尔思光电（成都）有限公司 | A kind of optical module and its operating status record method |
-
2011
- 2011-01-10 CN CN2011200072054U patent/CN202004910U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685465A (en) * | 2012-05-28 | 2012-09-19 | 成都微迪数字系统技术有限公司 | Video optical transmitter and receiver and detecting method for video optical transmitter and receiver |
| CN102685465B (en) * | 2012-05-28 | 2015-04-29 | 成都微迪数字系统技术有限公司 | Video optical transmitter and receiver and detecting method for video optical transmitter and receiver |
| CN109150312A (en) * | 2018-08-17 | 2019-01-04 | 索尔思光电（成都）有限公司 | A kind of optical module and its operating status record method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20130110 |
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