CN207967589U - A kind of fiber amplifier circuit - Google Patents

Abstract

The utility model belongs to fiber optical amplifier technology field, it is proposed a kind of fiber amplifier circuit, including CPU processor, the first control module, the second control module and laser module, it is characterized in that, the CPU processor is connect by current comparator with the first control module, first control module is connect with laser module, and the laser module is connect by temperature comparator with the second control module；The power consumption of the fiber amplifier circuit of the utility model is smaller, has overvoltage protection, high temperature protection function, powerful.

Description

A kind of fiber amplifier circuit

Technical field

The utility model is related to a kind of fiber amplifier circuits, belong to fiber optical amplifier technology field.

Background technology

At present on the market the conventional fiber amplifier for communicating or sensing it is general there are two types of：Semiconductor optical fibre amplifies Device（SOA）, the fiber amplifier of rare earth doped element（REDFA）, these fiber amplifiers are all made of linear voltage stabilization Constant Electric Current Road, power consumption is larger, and has a single function, and is not suitable on the more product for needing low-power consumption.

Invention content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of fiber amplifier circuit, should The power consumption of fiber amplifier circuit is smaller, has overvoltage protection, high temperature protection function, powerful.

For the above technical purpose of realization, the technical solution adopted in the utility model is：A kind of fiber amplifier circuit, including CPU processor, the first control module, the second control module and laser module, which is characterized in that the CPU processor passes through electricity Stream comparator is connect with the first control module, and first control module is connect with laser module, and the laser module passes through temperature Degree comparator is connect with the second control module.

Further, the 1st pin of the CPU processor and the 2nd pin are grounded by button, the 3rd pin and the 4th pipe Foot is grounded by light emitting diode LD1, LD2 respectively, and the 15th pin detects input terminal by amplifier T1 connections, and the 16th pin is logical Cross amplifier T2 connections detection output end, the 17th pin connect temperature comparator V+ input terminals, the 24th of CPU processor the and 25 Pin is connect with communication port, and the 29th pin connects current comparator V- input terminals, and the 37th pin to the 47th pin connects with display screen It connects.

Further, first control module includes the first chip, first switch pipe, second switch pipe, inductance, capacitance And vdd terminal is accessed in divider resistance, the ends PHA of first chip by the second capacitance, the ends FB of the first chip pass through first point Piezoresistance is grounded, while one end, the first capacitance cathode plate of the first inductance, first capacitance are accessed by the second divider resistance The other end of cathode plate earthing, first inductance is respectively connected to the drain electrode of the source electrode of first switch pipe, second switch pipe, described The source electrode of second switch pipe is grounded, and grid connects the ends LG of the first chip, and the grid of the first switch pipe meets the HG of the first chip End, drain electrode connect the ends BOOT of the first chip by diode D1.

Further, second control module includes the second chip, third switching tube, the 4th switching tube, inductance, capacitance And vdd terminal is accessed in divider resistance, the ends PHA of second chip by the 4th capacitance, the ends FB of second chip pass through the Three divider resistances be grounded, while by the 4th divider resistance be respectively connected to one end of the second inductance, third capacitance positive plate, institute The cathode plate earthing of third capacitance is stated, the other end of second inductance is respectively connected to the source electrode of third switching tube, the 4th switch The drain electrode of pipe, the source electrode ground connection of the 4th switching tube, grid access the ends LG of the second chip, the grid of the third switching tube The ends HG of the second chip are connect, drain electrode connects the ends BOOT of the second chip by diode D2.

Further, the laser module includes light emitting diode LD3, NTC resistance and semiconductor cooler TEC, described The anode of light emitting diode LD3 connects the positive plate of the first capacitance, and cathode connects the input terminal of sampling resistor one end and current amplifier, The V+ input terminals of the output termination current comparator of the current amplifier, the output of the current comparator terminate at first point On the connecting line of piezoresistance and the second divider resistance, the cathode of another termination semiconductor cooler TEC of sampling resistor, simultaneously Ground connection, the anode of the semiconductor cooler TEC connect the positive plate of third capacitance；NTC resistance one end is grounded, another termination The V+ input terminals of temperature comparator and one end of resistance, while the 17th pin of CPU processor is accessed, another termination of resistance The other end concatenation second temperature divider resistance of one end of the first temperature divider resistance, the first temperature divider resistance is followed by Ground, while the V- input terminals of cut-in temperature comparator, the output of the temperature comparator terminate at third divider resistance and the 4th On the connecting line of divider resistance.

From the above, it can be seen that the utility model has technical effect that：

1）The utility model has voltage protection function；Sample-synchronous rectifier switch circuit, loss is small, and fever is small；

2）The utility model has the ability that high temperature reaches equalized temperature of resisting, and further decreases power consumption.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model.

Reference sign：1-CPU processors, 2- detection input terminal, 3- detection output end, 4- display screens, 5- communication ports, 6- buttons, 7- current comparators, the first chips of 8-, 9- first switches pipe, 10- second switches pipe, the first inductance of 11-, 12- first Capacitance, the first divider resistances of 13-, 14- laser modules, 15- sampling resistors, 16- current amplifiers, the second chips of 17-, 18- Three switching tubes, the 4th switching tubes of 19-, the second inductance of 20-, the second capacitances of 21-, 22- thirds divider resistance, 23- temperature comparators, The first temperature of 24- divider resistance, 25- resistance, the second divider resistances of 26-, the first capacitances of 27-, the second capacitances of 28-, the 4th point of 29- Piezoresistance and 30- second temperature divider resistances.

Specific implementation mode

With reference to specific drawings and examples, the utility model is described in further detail.

With reference to the accompanying drawings shown in 1, a kind of fiber amplifier circuit, including CPU processor 1, the first control module, the second control Module and laser module 14, which is characterized in that the CPU processor 1 is connect by current comparator 7 with the first control module, First control module is connect with laser module 14, and the laser module 14 passes through temperature comparator 23 and the second control module Connection.

1st pin of the CPU processor 1 and the 2nd pin are grounded by button 6, the 3rd pin and the 4th pin difference It is grounded by light emitting diode LD1, LD2, the 15th pin detects input terminal 2 by amplifier T1 connections, and the 16th pin is by putting The V+ input terminals of big device T2 connections detection the 3, the 17th pin of output end connection temperature comparator 23, the 24th and 25 of CPU processor 1 the Pin is connect with communication port 5, and the 29th pin connects current comparator 7V- input terminals, the 37th pin to the 47th pin and display screen 4 Connection.

First control module includes the first chip 8, first switch pipe 9, second switch pipe 10, inductance, capacitance and divides Vdd terminal is accessed in the ends PHA of piezoresistance, first chip 8 by the second capacitance 27, and the ends FB of the first chip 8 pass through first point Piezoresistance 13 is grounded, while one end, 12 positive plate of the first capacitance of the first inductance 11 are accessed by the second divider resistance 26, described First capacitance, 12 cathode plate earthing, the other end of first inductance 11 are respectively connected to the source electrode of first switch pipe 9, second switch The drain electrode of pipe 10, the source electrode ground connection of the second switch pipe 10, grid connect the ends LG of the first chip 8, the first switch pipe 9 Grid connects the ends HG of the first chip 8, and drain electrode connects the ends BOOT of the first chip 8 by diode D1.

Second control module include the second chip 17, third switching tube 18, the 4th switching tube 19, inductance, capacitance and Vdd terminal is accessed in the ends PHA of divider resistance, second chip 17 by the 4th capacitance 28, and the ends FB of second chip 17 are logical The ground connection of third divider resistance 22 is crossed, while being respectively connected to one end, the third capacitance of the second inductance 20 by the 4th divider resistance 29 The other end of 21 positive plate, the cathode plate earthing of the third capacitance 21, second inductance 20 is respectively connected to third switch The drain electrode of the source electrode of pipe 18, the 4th switching tube 19, the source electrode ground connection of the 4th switching tube 19, grid access the second chip 17 The ends LG, the grid of the third switching tube 18 connect the ends HG of the second chip 17, and drain electrode connects the second chip 17 by diode D2 The ends BOOT.

The laser module 14 includes light emitting diode LD3, NTC resistance and semiconductor cooler TEC, the light-emitting diodes The anode of pipe LD3 connects the positive plate of the first capacitance 12, and cathode meets the input terminal of sampling resistor 15 one end and current amplifier 16, institute The V+ input terminals of the output termination current comparator 7 of current amplifier 16 are stated, the output of the current comparator 7 terminates at first On the connecting line of divider resistance 13 and the second divider resistance 26, another termination semiconductor cooler TEC's of the sampling resistor 15 Cathode is grounded simultaneously, and the anode of the semiconductor cooler TEC connects the positive plate of third capacitance 21；The NTC resistance one terminates Ground, one end of the V+ input terminals and resistance 25 of other end jointing temp comparator 23, while the 17th pin of CPU processor 1 is accessed, One end of the first temperature divider resistance 24 of another termination of the resistance 25, the other end concatenation of the first temperature divider resistance 24 Be grounded after second temperature divider resistance 30, while the V- input terminals of cut-in temperature comparator 23, the temperature comparator 23 it is defeated Go out to terminate on the connecting line of third divider resistance 22 and the 4th divider resistance 29.

The model STM32F103VET6 of CPU processor in the utility model embodiment, first chip 8 and The model of two chips 17 is RT9214, the model JDSU-S26 of the laser module 14.

Utility model works principle：When the voltage is high, the FB sampling ends of the first chip 8 receive the electricity of divider resistance Pressure, the turn-on time of adjustment first switch pipe 9 and second switch pipe 10, to reduce voltage；Specifically, when electric current is through over-sampling Resistance 15 becomes voltage, after the amplification of current amplifier 16, the V+ input terminals of input current comparator 7, and the voltage of V+ input terminals It is compared with from the 29th pin output voltage of CPU processor 1, when excessively high, current comparator 7 exports high level, the first core The FB sampling ends of piece 8 receive this high level, the turn-on time of adjustment first switch pipe 9 and second switch pipe 10, to reduce Electric current；The numerical value of CPU processor output in this way can define the output current of power module, be provided simultaneously with voltage protection work( Can, sample-synchronous rectifier switch circuit, loss is small, and fever is small；

NTC resistance one end of laser module 14 is grounded, input+end of other end jointing temp comparator 23 and resistance 25, shape At voltage, the voltage that the temperature divider resistance of the voltage and comparator V- input terminals is formed is compared, when temperature is high, NTC Resistance becomes smaller, and temperature comparator 23 exports low level, and the FB sampling ends of the second chip 17 receive this low level, and adjustment third is opened The turn-on time of pipe 18 and the 4th switching tube 19 is closed, the turn-on time of upper switch pipe is lengthened, to increase voltage so that TEC electricity Stream increases, and refrigeration enhancing reduces temperature, reaches equalized temperature, further decrease power consumption.

The utility model and embodiments thereof are described above, description is not limiting, shown in attached drawing Also it is one of the embodiment of the utility model, actual structure is not limited to this.If the ordinary skill people of this field Member is enlightened by it, without deviating from the purpose of the present invention, is not inventively designed and the technical solution Similar frame mode and embodiment, all should belong to the protection range of the utility model.

Claims (5)

1. a kind of fiber amplifier circuit, including CPU processor（1）, the first control module, the second control module and laser module （14）, which is characterized in that the CPU processor（1）Pass through current comparator（7）It is connect with the first control module, described first Control module and laser module（14）Connection, the laser module（14）Pass through temperature comparator（23）Connect with the second control module It connects.

2. a kind of fiber amplifier circuit according to claim 1, it is characterised in that：The CPU processor（1）The 1st Pin and the 2nd pin pass through button（6）Ground connection, the 3rd pin and the 4th pin are grounded by light emitting diode LD1, LD2 respectively, 15th pin detects input terminal by amplifier T1 connections（2）, the 16th pin pass through amplifier T2 connections detect output end（3）, 17th pin connects temperature comparator（23）V+ input terminals, CPU processor（1）The 24th and 25 pins and communication port（5）Even It connects, the 29th pin connects current comparator（7）V- input terminals, the 37th pin to the 47th pin and display screen（4）Connection.

3. a kind of fiber amplifier circuit according to claim 1, it is characterised in that：First control module includes the One chip（8）, first switch pipe（9）, second switch pipe（10）, inductance, capacitance and divider resistance, first chip（8）'s The ends PHA pass through the second capacitance（27）Access vdd terminal, the first chip（8）The ends FB pass through the first divider resistance（13）Ground connection, simultaneously Pass through the second divider resistance（26）Access the first inductance（11）One end, the first capacitance（12）Positive plate, first capacitance （12）Cathode plate earthing, first inductance（11）The other end be respectively connected to first switch pipe（9）Source electrode, second switch pipe （10）Drain electrode, the second switch pipe（10）Source electrode ground connection, grid connects the first chip（8）The ends LG, the first switch Pipe（9）Grid connect the first chip（8）The ends HG, drain electrode by diode D1 connects the first chip（8）The ends BOOT.

4. a kind of fiber amplifier circuit according to claim 1, it is characterised in that：Second control module includes the Two chips（17）, third switching tube（18）, the 4th switching tube（19）, inductance, capacitance and divider resistance, second chip（17） The ends PHA pass through the 4th capacitance（28）Access vdd terminal, second chip（17）The ends FB pass through third divider resistance（22）It connects Ground, while passing through the 4th divider resistance（29）It is respectively connected to the second inductance（20）One end, third capacitance（21）Positive plate, institute State third capacitance（21）Cathode plate earthing, second inductance（20）The other end be respectively connected to third switching tube（18）Source Pole, the 4th switching tube（19）Drain electrode, the 4th switching tube（19）Source electrode ground connection, grid access the second chip（17）LG End, the third switching tube（18）Grid connect the second chip（17）The ends HG, drain electrode by diode D2 connects the second chip （17）The ends BOOT.

5. a kind of fiber amplifier circuit according to claim 1, it is characterised in that：The laser module（14）Including hair Optical diode LD3, NTC resistance and semiconductor cooler TEC, the anode of the light emitting diode LD3 connect the first capacitance（12）'s Positive plate, cathode connect sampling resistor（15）One end and current amplifier（16）Input terminal, the current amplifier（16）It is defeated Go out to terminate current comparator（7）V+ input terminals, the current comparator（7）Output terminate at the first divider resistance（13）With Second divider resistance（26）Connecting line on, the sampling resistor（15）The cathode of another termination semiconductor cooler TEC, simultaneously Ground connection, the anode of the semiconductor cooler TEC connect third capacitance（21）Positive plate；NTC resistance one end is grounded, another Terminate temperature comparator（23）V+ input terminals and resistance（25）One end, while accessing CPU processor（1）The 17th pin, The resistance（25）The first temperature divider resistance of another termination（24）One end, the first temperature divider resistance（24）It is another End concatenation second temperature divider resistance（30）After be grounded, while cut-in temperature comparator（23）V- input terminals, the temperature ratio Compared with device（23）Output terminate at third divider resistance（22）With the 4th divider resistance（29）Connecting line on.