CN207354283U - Positive light emission module - Google Patents
Positive light emission module Download PDFInfo
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- CN207354283U CN207354283U CN201721125081.3U CN201721125081U CN207354283U CN 207354283 U CN207354283 U CN 207354283U CN 201721125081 U CN201721125081 U CN 201721125081U CN 207354283 U CN207354283 U CN 207354283U
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Abstract
The utility model discloses a kind of positive light emission module, it is related to electro-optical conversion circuit technical field.The forward direction light emission module includes：First splitter, first radio frequency amplifier, first distributor, signal detection interface, first radio frequency power detector, voltage amplifier, electricity adjusts attenuator circuit, second radio frequency amplifier, microprocessor, manual/auto gain control circuit, second splitter, second distributor, signaling switch, predistortion circuit, Distributed Feedback Laser, driving power automatic control circuit, light APC automatic control circuits, Current Voltage parameter collection module, temperature collection circuit, SPI communication module and three-color LED display module.The forward direction light emission module circuit is using newest MMIC designs, and low in energy consumption, index is excellent, job stability is high, signal transmission capabilities are strong, can adjust the luminous power of output as needed, using effect is good.
Description
Technical field
It the utility model is related to electro-optical conversion circuit technical field, more particularly to a kind of positive light emission module.
Background technology
Electro-optical conversion circuit has been widely used cable television delivery systems field, and generally conventional circuit uses
Control and direct test number manually, operation application have limitation, and using effect is bad.
Utility model content
Technical problem to be solved in the utility model is how to provide a kind of positive light emission module, can be as needed
The luminous power of output is adjusted, using effect is good.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of forward direction light emission module, its
It is characterized in that including：First splitter, the signal input part of the first splitter input for the signal of the positive light emission module
End, first splitter are used to a part of signal assigning to the first distributor, and another part signal assigns to the amplification of the first radio frequency
Device；The signal output part of first splitter is divided into two-way, and the first via is connected with the input terminal of the first radio frequency amplifier, and second
Road is connected with the input terminal of the first distributor, and first radio frequency amplifier is used to amplify radiofrequency signal for the first time；First
The output terminal of distributor is divided into two-way, and the first via is connected with signal detection interface, and the second tunnel is detected through the first radio-frequency power successively
It is connected after device and voltage amplifier with the signal input part of microprocessor, first distributor is arrived for evenly distributing signal
On signal detection interface and the first radio frequency power detector, first radio frequency power detector is used to detect Feedback of Power to micro-
Processor, and alternating current is converted into direct current, the voltage amplifier is used to be amplified voltage signal in processing, the letter
Number detection interface be used for be connected with external equipment, electric signal is detected；
The output terminal of first radio frequency amplifier adjusts the input terminal of attenuator circuit to be connected with electricity, and electricity adjusts the output terminal of attenuator circuit
It is connected with the input terminal of the second radio frequency amplifier, the output terminal of microprocessor declines through manually/automatic gain control circuit and electricity tune
The control signal input connection on powered down road, the electricity are adjusted attenuator circuit to be used for manually/automatic gain control circuit and are adjusted,
Obtain suitable radio frequency level, second radio frequency amplifier is used to further be amplified radiofrequency signal, it is described manually/
Automatic gain control circuit is controlled by microprocessor, and because input signal changes, attenuator circuit is adjusted using its adjusting electricity；Second penetrates
The output terminal of audio amplifier is connected with the input terminal of the second splitter, and the output terminal of the second splitter is divided into two-way, first via warp
Signaling switch and the input terminal of predistortion circuit connect, and the second tunnel is connected with the input terminal of the second distributor, second branch
Device is used to a part of signal assigning to the second distributor, and another part signal assigns to signaling switch；The output terminal of second distributor
It is divided into two-way, the first via is connected through the signal input part of the second radio frequency power detector and microprocessor, the second tunnel and excitation electricity
Flat detection interface connection, second distributor are used to evenly distribute signal to level of drive detection interface and the second radio-frequency power
Detector, second radio frequency power detector are used to detect radio-frequency power, feed back to microprocessor, the level of drive detection
Interface is used to be connected with external equipment, and level is detected；
The signal output part of microprocessor is connected with the control terminal of the signaling switch, and the signaling switch is in microprocessor
Control under Time Delay Opening, the input terminal of the output terminal of the predistortion circuit and Distributed Feedback Laser connects, the Distributed Feedback Laser
Output terminal be the output terminal of the positive light emission module, the predistortion circuit is used to compensate carrier wave composite second beat ratio
CSO, makes it>=60dB, the Distributed Feedback Laser are used to electric signal being transformed into optical signal；
The output terminal of driving power automatic control circuit is connected with a control terminal of the Distributed Feedback Laser, microprocessor
Output terminal be connected with the input terminal of the driving power automatic control circuit, the output terminal of light APC automatic control circuits and institute
Another control terminal connection of Distributed Feedback Laser is stated, the output terminal of microprocessor connects with the input terminal of institute's light APC automatic control circuits
Connect, the driving power automatic control circuit is used for the control for receiving microprocessor, passes through the light work(of current control Distributed Feedback Laser
Rate size, the smooth APC automatic control circuits are used for the control for receiving microprocessor, control the temperature controller of Distributed Feedback Laser,
Reach 25 DEG C so that light power stabilising, the microprocessor are used to being collected electric signal power, handle and controlling institute
State the correlation module in positive light emission module.
Further technical solution is：The forward direction light emission module further includes Current Voltage parameter collection module, institute
The signal input part that Current Voltage parameter collection module is stated with the microprocessor is connected, for gathering the positive light emitting mould
The electric current and information of voltage of block.
Further technical solution is：The forward direction light emission module further includes temperature collection circuit, and the temperature is adopted
Collector is connected with the signal input part of the microprocessor, for gathering the temperature information of the positive light emission module.
Further technical solution is：The forward direction light emission module further includes SPI communication module, the SPI communication
Module is bi-directionally connected with the microprocessor, for being connected with ancillary equipment, is realized to the long-range of the positive light emission module
Or local control.
Further technical solution is：The forward direction light emission module further includes three-color LED display module, and described micro-
The signal output part connection of processor, for showing and the relevant parameter information of the positive light emission module.
It is using beneficial effect caused by above-mentioned technical proposal：The forward direction light emission module includes electricity and adjusts decay electricity
Road, automatic attenuation circuit, predistortion circuit, driving current automatic control circuit and light APC automatic control circuits, pass through radio frequency
Power detection input microprocessor, then the big of radio frequency incoming level and laser drive level is shown by microprocessor instruction
It is small；Microprocessor provides signaling switch, transmitting luminous power, Current Voltage parameter, temperature information, working status, Local or Remote
Information gathering and the display functions such as control, it is easy to use.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the functional block diagram of positive light emission module described in the utility model embodiment；
Wherein：1st, the first splitter 2, the first distributor 3, the first radio frequency amplifier 4, signal detection interface 5, voltage amplification
Device 6, the second radio frequency amplifier 7, the second splitter 8, the second distributor 9, level of drive detection interface.
Embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, be fully described by, it is clear that and described embodiment is only the part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be implemented using other different from other manner described here, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is from the limitation of following public specific embodiment.
As shown in Figure 1, the utility model embodiment discloses a kind of positive light emission module, including：First splitter 1,
The signal input part of first splitter 1 is the signal input part of the positive light emission module, and first splitter 1 is used for will
A part of signal assigns to the first distributor 2, and another part signal assigns to the first radio frequency amplifier 3；The letter of first splitter 1
Number output terminal is divided into two-way, and the first via is connected with the input terminal of the first radio frequency amplifier 3, and the second tunnel is defeated with the first distributor 2
Enter end connection, first radio frequency amplifier 3 is used to amplify the radiofrequency signal of the first splitter 1 output for the first time；First
The output terminal of distributor 2 is divided into two-way, and the first via is connected with signal detection interface 4, and the second tunnel is examined through the first radio-frequency power successively
It is connected after surveying device and voltage amplifier 5 with the signal input part of microprocessor, first distributor 2 is used to evenly distribute letter
Number on 4 and first radio frequency power detector of signal detection interface, first radio frequency power detector is used to detecting power anti-
Feed microprocessor, and alternating current is converted into direct current, the voltage amplifier 5 is used to be amplified voltage signal at place
Reason, the signal detection interface are used to be connected with external equipment, electric signal are detected；
The output terminal of first radio frequency amplifier 3 adjusts the input terminal of attenuator circuit to be connected with electricity, and electricity adjusts the output of attenuator circuit
End is connected with the input terminal of the second radio frequency amplifier 6, and the output terminal of microprocessor is through manually/automatic gain control circuit (MGC/
Agc circuit) with electricity adjust attenuator circuit control signal input be connected, it is described electricity adjust attenuator circuit be used for manually/automatically
Gain control circuit is adjusted, and obtains suitable radio frequency level, and second radio frequency amplifier 6 is used for further to radiofrequency signal
It is amplified, the manual/auto gain control circuit is controlled by microprocessor, because input signal changes, utilizes its adjusting
Electricity adjusts attenuator circuit；The output terminal of second radio frequency amplifier 6 is connected with the input terminal of the second splitter 7, the second splitter 7 it is defeated
Outlet is divided into two-way, and the first via is connected through signaling switch and the input terminal of predistortion circuit, and the second tunnel is defeated with the second distributor 8
Enter end connection, second splitter 7 is used to a part of signal assigning to the second distributor 8, and another part signal assigns to signal
Switch；The output terminal of second distributor 8 is divided into two-way, and signal of the first via through the second radio frequency power detector and microprocessor is defeated
Enter end connection, the second tunnel is connected with level of drive detection interface 9, and second distributor 8 is used to evenly distribute signal to excitation
9 and second radio frequency power detector of level detection interface, second radio frequency power detector are used to detect radio-frequency power, feed back
To microprocessor, the level of drive detection interface 9 is used to be connected with external equipment, level is detected；
The signal output part of microprocessor is connected with the control terminal of the signaling switch, and the signaling switch is in microprocessor
Control under Time Delay Opening because when just thering is the electric signal to be input to module, pulse shock can be produced, influence the stabilization of signal,
By Time Delay Opening, ensure signal stabilization；The output terminal of the predistortion circuit and the input terminal of Distributed Feedback Laser connect, described
The output terminal of Distributed Feedback Laser is the output terminal of the positive light emission module, and the predistortion circuit is compound for compensating carrier wave
Second beat makes it than CSO>=60dB, the Distributed Feedback Laser are used to electric signal being transformed into optical signal；
The output terminal of driving power automatic control circuit is connected with a control terminal of the Distributed Feedback Laser, microprocessor
Output terminal be connected with the input terminal of the driving power automatic control circuit, the output terminal of light APC automatic control circuits and institute
Another control terminal connection of Distributed Feedback Laser is stated, the output terminal of microprocessor connects with the input terminal of institute's light APC automatic control circuits
Connect, the driving power automatic control circuit is used for the control for receiving microprocessor, passes through the light work(of current control Distributed Feedback Laser
Rate size, the smooth APC automatic control circuits are used for the control for receiving microprocessor, control the temperature controller of Distributed Feedback Laser,
Reach 25 DEG C so that light power stabilising, the microprocessor are used to being collected electric signal power, handle and controlling institute
State the correlation module in positive light emission module.
Further, the positive light emission module further includes Current Voltage parameter collection module, the Current Voltage ginseng
Number acquisition module is connected with the signal input part of the microprocessor, for gathering the electric current and electricity of the positive light emission module
Press information.
Further, the positive light emission module further includes temperature collection circuit, the temperature collection circuit with it is described
The signal input part connection of microprocessor, for gathering the temperature information of the positive light emission module.
Further, the positive light emission module further includes SPI communication module, the SPI communication module with it is described micro-
Processor is bi-directionally connected, and for being connected with ancillary equipment, realizes the remotely-or locally control to the positive light emission module.
Further, the positive light emission module further includes three-color LED display module, the signal with the microprocessor
Output terminal connects, for showing and the relevant parameter information of the positive light emission module.
The forward direction light emission module is used to radiofrequency signal be converted to optical signal, and operation principle is：Radiofrequency signal passes through
Directional coupler is input to preceding radio frequency amplification, electricity adjusts decay, the amplification of postposition radio frequency, directional coupler, signaling switch, predistortion
Optical signal is exported after circuit, Distributed Feedback Laser.Directional coupler branch connection distributor wherein after input signal, is used for all the way
Mouth detection signal is tested, another way shows radio frequency through radio frequency power detector input microprocessor, then by microprocessor instruction
The size of incoming level；Electricity adjusts attenuation control signal attenuation (may be configured as MGC or AGC state)；MGC/AGC is manual gain
Control and automatic growth control, automatic gain control function are to change in input signal in a certain range, are examined by microprocessor
The radiofrequency signal size measured automatically controls electricity and adjusts decay to go to realize that radio frequency output signal remains unchanged；The amplified orientation of postposition
Coupler branch connects distributor, is used to test mouth detection signal all the way, another way inputs microprocessor through radio frequency power detector
Device, then the size by microprocessor instruction display radio frequency output level (i.e. laser drive level)；Signaling switch is used to prolong
When connect radiofrequency signal, with protect laser because voltage or other impact and damage；Predistortion circuit is used to compensate laser
Carrier wave composite second beat ratio (CSO) index；Driving current automatic control circuit is used for the electric current for controlling required Output optical power,
Ensure the stabilization of luminous power output；Light APC automatic control circuits are used for (laser at this time when damage or failure because of other devices
Output optical power can ad infinitum increase), laser export optical power control in big certain scope, have than setting value
Effect protection laser will not damage.
Microprocessor also provide transmitting luminous power, radio frequency incoming level, Current Voltage parameter, temperature information, working status,
Information gathering and the display functions such as Local or Remote control, it is easy to use.
Claims (5)
- A kind of 1. forward direction light emission module, it is characterised in that including：First splitter, the signal input part of the first splitter is institute The signal input part of positive light emission module is stated, first splitter is used to a part of signal assigning to the first distributor, separately A part of signal assigns to the first radio frequency amplifier；The signal output part of first splitter is divided into two-way, the first via and first The input terminal connection of radio frequency amplifier, the second tunnel are connected with the input terminal of the first distributor, and first radio frequency amplifier is used for Radiofrequency signal is amplified for the first time；The output terminal of first distributor is divided into two-way, and the first via is connected with signal detection interface, the Two tunnels are connected after the first radio frequency power detector and voltage amplifier with the signal input part of microprocessor successively, and described One distributor is used to evenly distribute signal to signal detection interface and the first radio frequency power detector, first radio-frequency power Detector is used to detect Feedback of Power to microprocessor, and alternating current is converted to direct current, and the voltage amplifier is used for pair Voltage signal is amplified processing, and the signal detection interface is used to be connected with external equipment, electric signal is detected；The output terminal of first radio frequency amplifier adjusts the input terminal of attenuator circuit be connected with electricity, the output terminal and the of electricity tune attenuator circuit The input terminal connection of two radio frequency amplifiers, the output terminal of microprocessor adjust decay electricity through manually/automatic gain control circuit and electricity The control signal input connection on road, the electricity are adjusted attenuator circuit to be used for manually/automatic gain control circuit and are adjusted, obtain Suitable radio frequency level, second radio frequency amplifier is used to further be amplified radiofrequency signal, described manual/auto Gain control circuit is controlled by microprocessor, and because input signal changes, attenuator circuit is adjusted using its adjusting electricity；Second radio frequency is put The output terminal of big device is connected with the input terminal of the second splitter, and the output terminal of the second splitter is divided into two-way, and the first via is through signal Switch is connected with the input terminal of predistortion circuit, and the second tunnel is connected with the input terminal of the second distributor, and second splitter is used In a part of signal is assigned to the second distributor, another part signal assigns to signaling switch；The output terminal of second distributor is divided into Two-way, the first via are connected through the signal input part of the second radio frequency power detector and microprocessor, and the second tunnel is examined with the level of drive Interface connection is surveyed, second distributor is used to evenly distribute signal to level of drive detection interface and the detection of the second radio-frequency power Device, second radio frequency power detector are used to detect radio-frequency power, feed back to microprocessor, and the level of drive detects interface For being connected with external equipment, level is detected；The signal output part of microprocessor is connected with the control terminal of the signaling switch, control of the signaling switch in microprocessor The lower Time Delay Opening of system, the output terminal of the predistortion circuit and the input terminal of Distributed Feedback Laser connect, the Distributed Feedback Laser it is defeated Outlet is the output terminal of the positive light emission module, and the predistortion circuit is used to compensating carrier wave composite second beat than CSO, Make it>=60dB, the Distributed Feedback Laser are used to electric signal being transformed into optical signal；The output terminal of driving power automatic control circuit is connected with a control terminal of the Distributed Feedback Laser, microprocessor it is defeated Outlet is connected with the input terminal of the driving power automatic control circuit, output terminal and the DFB of light APC automatic control circuits Another control terminal connection of laser, the output terminal of microprocessor are connected with the input terminal of institute's light APC automatic control circuits, institute The control that driving power automatic control circuit is used to receive microprocessor is stated, the luminous power by current control Distributed Feedback Laser is big Small, the smooth APC automatic control circuits are used for the control for receiving microprocessor, control the temperature controller of Distributed Feedback Laser, make it Reach 25 DEG C so that light power stabilising, the microprocessor be used for electric signal power is collected, handle and is controlled it is described just Correlation module into light emission module.
- 2. forward direction light emission module as claimed in claim 1, it is characterised in that：The forward direction light emission module further includes electric current Voltage parameter acquisition module, the Current Voltage parameter collection module are connected with the signal input part of the microprocessor, are used for Gather the electric current and information of voltage of the positive light emission module.
- 3. forward direction light emission module as claimed in claim 1, it is characterised in that：The forward direction light emission module further includes temperature Acquisition Circuit, the temperature collection circuit are connected with the signal input part of the microprocessor, for gathering the positive light hair Penetrate the temperature information of module.
- 4. forward direction light emission module as claimed in claim 1, it is characterised in that：The forward direction light emission module further includes SPI Communication module, the SPI communication module are bi-directionally connected with the microprocessor, for being connected with ancillary equipment, realize to described The remotely-or locally control of positive light emission module.
- 5. forward direction light emission module as claimed in claim 1, it is characterised in that：The forward direction light emission module further includes three colors LED display module, is connected with the signal output part of the microprocessor, relevant with the positive light emission module for showing Parameter information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721125081.3U CN207354283U (en) | 2017-09-04 | 2017-09-04 | Positive light emission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721125081.3U CN207354283U (en) | 2017-09-04 | 2017-09-04 | Positive light emission module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207354283U true CN207354283U (en) | 2018-05-11 |
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ID=62413358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721125081.3U Active CN207354283U (en) | 2017-09-04 | 2017-09-04 | Positive light emission module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207354283U (en) |
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2017
- 2017-09-04 CN CN201721125081.3U patent/CN207354283U/en active Active
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