CN106129790B - A kind of digital laser pumping source - Google Patents

A kind of digital laser pumping source Download PDF

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Publication number
CN106129790B
CN106129790B CN201610801054.7A CN201610801054A CN106129790B CN 106129790 B CN106129790 B CN 106129790B CN 201610801054 A CN201610801054 A CN 201610801054A CN 106129790 B CN106129790 B CN 106129790B
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port
resistance
module
capacitor
amplifier
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CN106129790A (en
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汝玉星
田小建
单江东
吴戈
高博
高福斌
李尚�
安明
梁雪
刘大恺
马春阳
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Jilin University
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Jilin University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Amplifiers (AREA)

Abstract

A kind of digital laser pumping source of the invention belongs to technical field of electronic equipment, structure has electric current drive module (9), temperature control modules (12), laser module (15) and front panel (16), it is characterized in that, there are also one-chip computer module (1) for structure, display module (2), indicating lamp module (3), key module (4), coder module (5), PC communication module (6), soft-start module (7), first D/A converter module (8), power sampling module (10), second D/A converter module (11), temperature sampling module (13) and analog-to-digital conversion module (14).The present invention is based on single-chip microcontroller control, have many advantages, such as that feature-rich, upgrading is convenient, program-controlled, and there are also the functions such as overtemperature alarm and soft start, highly-safe, long service life by the present invention.

Description

A kind of digital laser pumping source
Technical field
The invention belongs to technical field of electronic equipment, in particular to a kind of digital laser pumps source device.
Background technique
Optical fiber laser is good etc. with its Low threshold, high power, high light beam quality, good reliability, compact-sized and thermal diffusivity Plurality of advantages, be widely used in laser fiber communication, laser space remote communication, industrial shipbuilding, automobile manufacture, laser engraving, Laser marking, laser cutting, printing roller, metal and nonmetal drilling/cutting/welding (brazing, hardening, covering and depth weldering Connect), military and national defense safety, the fields such as medical instrument instrument and equipment.Optical fiber laser is using rare earth-doped fiber as increasing The laser of beneficial medium.Optical fiber laser is developed on the basis of fiber amplifier, by pumping source, rare earth doped light Fine, three fundamental compositions of resonant cavity, its working principle is that: the photon on pumping wavelength that pumping source generates is doped optical fiber It absorbs, rare earth element ion therein is made to transit to higher energy level, form population inversion；In condition that is spontaneous or being excited Under, rare earth element ion returns to low-lying level by high level and releases the photon of corresponding energy simultaneously；In the light of optical fiber laser The above process constitutes positive feedback in fine resonant cavity, to form laser generation output.
In optical fiber laser, it is necessary to energy source is provided by a laser pumping source for entire optical fiber laser, as light The core of fibre laser, the most important technical indicator master of pumping source are the stabilitys for exporting laser, are generated in various laser In circuit, the system being made of butterfly laser module and current driver, temperature controller is since its is easy to use, function is rich It is rich, stability is high, the advantages that being easily integrated is widely used, be this seminar in 2014 with the immediate prior art of the present invention A kind of patent of invention " high stability pump source of optical fiber laser " of year application, application No. is 2014103102505, the document In, using butterfly laser module as light emitting source, it is driven by the very high constant-flow driver of stability and constant temperature controller And temperature control has also carried out temperature control to system other parts core device, has effectively improved in addition to butterfly laser module carries out temperature control The stability of output laser.
But technology disclosed in patent 2014103102505 is based entirely on analog circuit realization, and this circuit exists Shortcomings, function is relatively simple, can only single machine work, can not using microcomputer carry out it is program-controlled, and once discovery system presence When deficiency needs to upgrade, hardware circuit can only be redesigned and make, so that the expansible and flexibility of system is by pole Big limitation.In addition, there is also inherent shortcomings: laser die for current driving circuit used in patent 2014103102505 Block belongs to photoelectric conversion device, is constantly present between certain transfer lag and Output optical power and driving current and exists centainly Phase difference, and the Feedback of Power of driver used in the patent is using the feedback system of simple linear scale, when System can work normally when being in quiescent operation state, also can guarantee very high stability, but when system is in dynamic duty When, such as when needing frequently to change output power, this linear scale feedback system just not can guarantee system stability and Response speed.Therefore, current published laser source technology also needs further perfect.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of in background technique, provide a kind of based on single-chip microcontroller control Digital laser pumping source.
Technical problem of the invention solves by the following technical programs:
A kind of digital laser pumping source, structure have electric current drive module 9, temperature control modules 12, laser module 15 With front panel 16, which is characterized in that there are also one-chip computer module 1, display module 2, indicating lamp module 3, key module 4, volumes for structure Code device module 5, PC communication module 6, soft-start module 7, the first D/A converter module 8, power sampling module 10, the second digital-to-analogue turn Change the mold block 11, temperature sampling module 13 and analog-to-digital conversion module 14；
The structure of the one-chip computer module 1 is that the power end and ground terminal of single-chip microcontroller U1 connects+5V power supply and number respectively Ground, power end also pass through capacitor C1 and connect digitally, and the indirect crystal oscillator Y1 of port x 1 and port x 2, port x 1 and port x 2 are also distinguished It is connect digitally by capacitor C2 and capacitor C3, port P00~port P07 passes through resistance R1~resistance R8 respectively and meets+5V power supply, institute The model of the single-chip microcontroller U1 stated is STC89C51.
The structure of the display module 2 is that port D0~port D7 of display screen U2 connects the port of single-chip microcontroller U1 respectively Port EN, port R/W and the port RS of P00~port P07, display screen U2 connect respectively single-chip microcontroller U1 port P10, port WR and The port VL and port BL- of port RD, display screen U2 connect digitally, and port BL+ connects the end of slide wire of slide rheostat W1, port VDD and port VSS connects+5V power supply and digitally respectively, and capacitor C4, slide rheostat are further connected between port VDD and port VSS A termination+5V power supply of W1, another to terminate digitally, the model LCD1602 of the display screen U2；
The structure of the indicating lamp module 3 is that one end of resistance R13 and resistance R14 connect the port of single-chip microcontroller U1 jointly P11, the other end connect the grid of field-effect tube Q1 and field-effect tube Q2, one end difference order piece of resistance R15 and resistance R16 respectively The port P12 and port P13 of machine U1, the other end connect the grid of field-effect tube Q3 and field-effect tube Q4 respectively, field-effect tube Q1's Drain electrode connects simulation ground, one end of source electrode connecting resistance R9, and field-effect tube Q2~field-effect tube Q4 source electrode connects simulation ground, drain electrode point One end of other connecting resistance R10~resistance R12, resistance R9~resistance R12 other end distinguish sending and receiving optical diode D1~luminous two The cathode of pole pipe D4, light emitting diode D1~light emitting diode D4 anode connect+12V power supply；
The structure of the key module 4 is that the one end switch S1~switch S6 and the one end capacitor C5~capacitor C10 are equal It connects digitally, switch S1~switch S6 other end meets capacitor C5~capacitor C10 other end, also respectively connecting resistance R17 respectively One end of~resistance R22 also meets Schmidt trigger U3A~Schmidt trigger U3F input terminal, resistance R17~electricity respectively The other end of resistance R22 connects 5V power supply, and Schmidt trigger U3A~Schmidt trigger U3F output end connects single-chip microcontroller respectively Totally 6 ports port P14~port P17, the port P20~port P21 of U1；
The structure of the coder module 5 is one end of the 1 foot connecting resistance R23 of rotary encoder Encoder1, capacitor One end of C11 and the input terminal of Schmidt trigger U4A, one end of 2 foot connecting resistance R24, one end of capacitor C12 and Schmidt's touching The input terminal of device U4B is sent out, 3 feet connect digitally, and the other end of resistance R23 and resistance R24 connect+5V power supply, capacitor C11 and capacitor The other end of C12 connects digitally, and the output end of Schmidt trigger U4A and Schmidt trigger U4B meet single-chip microcontroller U1 respectively Middle fracture INT0 and middle fracture INT1；
The structure of the PC communication module 6 is that the port VCC and port GND of electrical level transferring chip U15 meets+5V respectively Power supply and digitally, port V+ connects+5V power supply by capacitor C13, and port V- is connect digitally by capacitor C14, port C1+ and end The indirect capacitor C16, port T1IN and port R1OUT of the indirect capacitor C15, port C2+ and port C2- of mouth C1- distinguish order The port TXD and port RXD of piece machine U1, port R1IN and port T1OUT connect 3 feet and 2 feet of D-shaped interface J1, D-shaped interface respectively 5 feet of J1 connect digitally, and the model of the electrical level transferring chip U15 is MAX232, and D-shaped interface J1 is that a 9 needle D-shapeds connect Mouthful；
The structure of the soft-start module 7 is that one end of resistance R25 connects the port P22 of single-chip microcontroller U1, another termination three The base stage of pole pipe Q5, the emitter of triode Q5 connect+5V power supply, one end of collector connecting resistance R26, one end of capacitor C17 and The other end of the grid of field-effect tube Q6, resistance R26 and capacitor C17 connect simulation ground, and the source electrode of field-effect tube Q6 connects simulation ground, Drain electrode is denoted as port SoftStart, is connected with the port SoftStart_in of electric current drive module 9；
The structure of first D/A converter module 8 is the digital signal input end mouth and monolithic of digital analog converter U6 The port P0 of machine U1 is connected, and the port P23 of the port BYTE1/BYTE2 and single-chip microcontroller U1 of digital analog converter U6 are connected, and digital-to-analogue turns The port P24 of the port CS and single-chip microcontroller U1 of parallel operation U5 are connected, and port WR1, the port WR2 of digital analog converter U5 is and single-chip microcontroller The port WR of U1 is connected, and port x FER is connected with the port RD of single-chip microcontroller U1, the power supply termination+5V power supply of digital analog converter U6, Port DGND connects digitally, and port AGND and port Iout2 connect simulation ground, and port Rfb connects simulation ground, end by adjustable resistance W2 Mouth Iout1 connects the non-inverting input terminal of amplifier U7A, and the positive-negative power end of amplifier U7A connects+12V power supply and simulation ground respectively, and reverse phase is defeated Enter the indirect resistance R27 of end and output end, inverting input terminal also passes through resistance R28 and connects simulation ground, the reference of digital analog converter U6 Voltage input end Vref is denoted as port Vref_in1, connects the port V_refer in analog-to-digital conversion module 14, the output of amplifier U7A End is denoted as port I_ctr, is connected with the port I_ctr_in in electric current drive module 9；The model of the digital analog converter U6 It is DAC1232LCJ；
The structure of the electric current drive module 9 is that one end of resistance R29 is denoted as port I_ctr_in, another termination fortune The non-inverting input terminal of U7B is put, and is denoted as port SoftStart_in, the inverting input terminal of amplifier U7B and the Indirect Electro of output end Hold C18, the grid of output termination field-effect tube Q7, the drain electrode of field-effect tube Q7 connects+12V power supply, and source electrode connects laser module 15 Port LD+, one end of the anti-phase input terminating resistor R30 of amplifier U7B and one end of resistance R31, another termination of resistance R30 + 12V power supply, the output end of another termination amplifier U8A of resistance R31 and one end of adjustable resistance W3, and mould is driven as electric current The current feedback terminal of block is denoted as port I_F, connects the port I_F_in in analog-to-digital conversion module 14, the other end of adjustable resistance W3 One end of connecting resistance R32, one end of another terminating resistor R33 of resistance R32 and the inverting input terminal of amplifier U8A, resistance R33's Another termination simulation ground, the positive-negative power end of amplifier U8A meet+12V power supply and simulation ground, homophase input terminating resistor R34 respectively One end, one end of another terminating resistor Rs1 of resistance R34 also meets the port LD- of laser module 15, and resistance Rs1's is another Termination simulation ground；
The structure of the power sampling module 10 is the inverting input terminal of amplifier U8B and the indirect resistance of output end R36, one end of homophase input terminating resistor R35 also connect the port PD+ of laser module 15, another termination amplifier of resistance R35 The non-inverting input terminal of U9A, also meets the port PD- of laser module 15, the positive-negative power end of amplifier U9A connect respectively+12V power supply and Simulation ground, inverting input terminal connect simulation ground, the indirect resistance R39 of inverting input terminal and output end, anti-phase input by resistance R38 One end of connecting resistance R40, one end of another terminating resistor R37 of resistance R40 and amplifier U8B inverting input terminal, resistance R37 are gone back in end Another termination amplifier U9A output end, the output end of amplifier U8B is denoted as port P_F as Feedback of Power end, connects modulus and turns Change the mold the port P_F_in in block 14；
The structure of second D/A converter module 11 is the digital signal input end mouth and list of digital analog converter U10 The port P0 of piece machine U1 is connected, and the port P23 of the port BYTE1/BYTE2 and single-chip microcontroller U1 of digital analog converter U10 are connected, digital-to-analogue The port P25 of the port CS and single-chip microcontroller U1 of converter U10 are connected, port WR1, the port WR2 of digital analog converter U10 with list The port WR of piece machine U1 is connected, and port x FER is connected with the port RD of single-chip microcontroller U1, the power supply termination+5V of digital analog converter U10 Power supply, port DGND connect digitally, and port AGND and port Iout2 connect simulation ground, and port Rfb connects simulation by adjustable resistance W4 Ground, port Iout1 meet the non-inverting input terminal of amplifier U9B, the inverting input terminal of amplifier U9B and the indirect resistance R41 of output end, instead Phase input terminal also passes through resistance R42 and connects simulation ground, and the reference voltage input terminal Vref of digital analog converter U10 is denoted as port Vref_ In2 meets the port V_refer in analog-to-digital conversion module 14, and the output end of amplifier U9B is denoted as port T_ctr, controls mould with temperature Port T_ctr_in in block 12 is connected；The model of the digital analog converter U10 is DAC1232LCJ；
The structure of the temperature control modules 12 is that the positive-negative power end of amplifier U11A connects+12V power supply and simulation respectively Ground, non-inverting input terminal are denoted as port T_ctr_in, the indirect capacitor C19 of inverting input terminal and output end, and inverting input terminal also connects The output end of amplifier U12B, output one end of terminating resistor R43 of amplifier U11A, one end of resistance R44 and capacitor C20 one End, another termination+5V power supply of capacitor C20, the inverting input terminal of another termination amplifier U11B of resistance R43, resistance R44's is another One end connects the base stage of Darlington transistor Q8 and Darlington transistor Q10, and the collector of Darlington transistor Q8 and Darlington transistor Q10 meet+12V respectively Power supply and simulation ground, emitter are connected together, and are also connected with the non-inverting input terminal of one end of resistance Rs2 and amplifier U12A, electricity The other end of resistance Rs2 is connected with the non-inverting input terminal of amplifier U12B, also meets the port TEC+ of laser module 15, amplifier U12A's Positive-negative power end connects+12V power supply and simulation ground respectively, and the indirect resistance R50 of inverting input terminal and output end, inverting input terminal is also One end of connecting resistance R51 and one end of resistance R49, another termination+5V power supply of resistance R51, another terminating resistor of resistance R49 The inverting input terminal of one end of R48, one end of resistance R47 and amplifier U12B, the output of another termination amplifier U12A of resistance R48 End, the output end of another termination amplifier U12B of resistance R47, the homophase input termination+5V power supply of amplifier U11B, inverting input terminal With the indirect resistance R45 of output end, one end of terminating resistor R46 and one end of capacitor C21 are exported, another termination of capacitor C21+ 5V power supply, the other end of resistance R46 meet the base stage of Darlington transistor Q9 and Darlington transistor Q11, Darlington transistor Q9 and Darlington transistor Q11 Collector connect+12V power supply and simulation ground respectively, emitter is connected together, and also meets the port TEC- in laser module 15；
The structure of the temperature sampling module 13 is that the cathode of zener diode D5 connects+5V power supply, anode connecting resistance Another termination of one end of R52 and the non-inverting input terminal of amplifier U13A, resistance R52 simulates ground, the positive-negative power end of amplifier U13A + 12V power supply and simulation ground are connect respectively, the indirect capacitor C22 of inverting input terminal and output end exports one end of terminating resistor R54, One end of anti-phase input terminating resistor R53 and the emitter of triode Q12, another termination+5V power supply of resistance R53, resistance R54 Another termination triode Q12 base stage, one end of the collector connecting resistance R55 of triode Q12 also connects laser module 15 The non-inverting input terminal of another termination amplifier U13B of port NTC+, resistance R55, the inverting input terminal of amplifier U13B pass through resistance R57 meets simulation ground, the resistance R56 being serially connected indirectly and adjustable resistance W5 of inverting input terminal and output end；Output end conduct Temperature feedback end is denoted as port T_F, meets the port T_F_in of analog-to-digital conversion module 14；
The structure of the analog-to-digital conversion module 14 is that the port CLK of analog-digital converter U14 is connect digitally by capacitor C23, Port CS meets the port P26 of single-chip microcontroller U1, and port RD, port WR meet the port RD of single-chip microcontroller U1, port WR, port HBEN respectively The port P23 of single-chip microcontroller U1 is met, port SHDN connects+5V power supply, the data output end of analog-digital converter U14 and the end of single-chip microcontroller U1 Mouthful P0 by a high position to high-order, low level to low level in the way of be sequentially connected, the port Vdd of analog-digital converter U14 connects+5V power supply, end Mouth DGND connects digitally, and port AGND connects simulation ground, and port INT connects the port P27 of single-chip microcontroller U1, port CH0, port CH4, end Mouth CH5, port CH6 and port CH7 connect simulation ground, and port REF and port REFADJ pass through capacitor C25 and capacitor C24 respectively Connect simulation ground, port REF also connects the non-inverting input terminal of amplifier U15A, the positive-negative power end of amplifier U15A connect respectively+12V power supply and Simulation ground, inverting input terminal is connected with output end, and holds as the reference voltage, is denoted as port V_refer, analog-digital converter U14 Port CH1 simulation ground connect by capacitor C26 be denoted as port I_F_in, port CH2 passes through and as current feedback input terminal Capacitor C27 connects simulation ground, and as Feedback of Power input terminal, is denoted as port P_F_in, port CH3 connects simulation by capacitor C28 Ground, and as temperature feedback input terminal, it is denoted as port T_F_in；
The structure of the front panel 16 has, display screen 1601, power switch 1602, mode selection button 1603, constant current Indicator light 1604, invariable power indicator light 1605, power setting key 1606, current limliting setting button 1607, electric current setting button 1608, temperature setting key 1609, parameter regulation knob 1610, overtemperature alarm indicator light 1611, output control button 1612, swash Light output indicator light 1613 and laser output mouth 1614；Wherein, display screen 1601 is display screen described in display module 2 U2, model LCD1602, power switch 1602 are the master switch of whole device, mode selection button 1603, power setting key 1606, current limliting setting button 1607, electric current setting button 1608, temperature setting key 1609 and output control button 1612 this 6 A key is switch S1~switch S6 in key module 4, constant current indicator light 1604, invariable power indicator light 1605, overtemperature respectively Alarm lamp 1611 and laser output indicator 1613 this 4 indicator lights refer respectively to show the light emitting diode in lamp module 3 D1~light emitting diode D4, parameter regulation knob 1610 are rotary encoder Encoder1, laser described in coder module 5 Output port 1614 is connected with the tail optical fiber of laser module 15.
In a kind of digital laser pumping source of the invention, each element preferred parameter are as follows: resistance R1~resistance R24 is 10k Ω, resistance R25 are 20k Ω, and resistance R26 is 5M Ω, and resistance R27~resistance R29 is 10k Ω, and resistance R30 is 1M Ω, electricity Resistance R31~resistance R34 is 10k Ω, and resistance R35 is 1.5k Ω, and resistance R36~resistance R39 is 180k Ω, and resistance R40 is 20k Ω, resistance R41 are 25k Ω, and resistance R42 is 18k Ω, and resistance R43 is 10k Ω, and resistance R44 is 0.1k Ω, and resistance R45 is 10k Ω, resistance R46 are 0.1k Ω, and resistance R47, resistance R48, resistance R50, resistance R51 are 180k Ω, resistance R49, resistance R52~resistance R57 is 20k Ω, and resistance Rs1, resistance Rs2 are 0.1 Ω, and slide rheostat W1 is 200k Ω, adjustable resistance W2, adjustable resistance W4, adjustable resistance W5 are 10k Ω, and adjustable resistance W3 is 100k Ω, and crystal oscillator Y1 is 12MHz, and capacitor C1 is 0.1uF, capacitor C2, capacitor C3 are 30pF, and capacitor C4 is 0.1uF, and capacitor C5~capacitor C12 is 0.47uF, capacitor C13, Capacitor C14 is 0.1uF, and capacitor C15~capacitor C17 is 1uF, and capacitor C18~capacitor C21 is 0.47uF, and capacitor C22 is 0.1uF, capacitor C23 are 100pF, and capacitor C24 is 0.01uF, and capacitor C25 is 4.7uF, and capacitor C26~capacitor C28 is 10uF, Field-effect tube Q1 is that 2SJ112, field-effect tube Q2~field-effect tube Q4 and field-effect tube Q6 are 2sk1482, and field-effect tube Q7 is IRF530, triode Q5 are s9012, and Darlington transistor Q8, Darlington transistor Q9 are TIP132, Darlington transistor Q10, Darlington transistor Q11 is TIP137, and zener diode D5 is 2.5V, and Schmidt trigger U3A~Schmidt trigger U3F is a model 6 working cells of the integrated schmidt trigger of SN7414, Schmidt trigger U4A, Schmidt trigger U4B are another 2 working cells of the integrated schmidt trigger of model SN7414, amplifier U7A and amplifier U7B are a models 2 working cells of the integrated double operational of TLC2252, amplifier U8A and amplifier U8B are the integrated of second model TLC2252 2 working cells of double operational, amplifier U9A and amplifier U9B are 2 works of the integrated double operational of third model TLC2252 Make unit, amplifier U11A and amplifier U11B are 2 working cells of the integrated double operational of the 4th model TLC2252, amplifier U12A and amplifier U12B is 2 working cells of the integrated double operational of the 5th model TLC2252, amplifier U13A and amplifier U13B is 2 working cells of the integrated double operational of the 6th model TLC2252, and amplifier U15A is the 7th model 1 working cell of the integrated double operational of TLC2252.
In a kind of digital laser pumping source of the invention, the preferred JDI LC96 butterfly of laser module 15 envelope Fill laser module.
The utility model has the advantages that
1, the present invention is controlled using single-chip microcontroller, and function is more flexible, and function is richer, and upgrading is more convenient.
2, the present invention has program control module, can facilitate and be connected with microcomputer, micro-computer controlled to realize.
3, the present invention is equipped with " overtemperature alarm ", by mcu programming, it can be achieved that the function of overtemperature power alarm, improves The safety of system.
4, the present invention is equipped with soft start function, and when starting laser exports, driving current gently can rise to setting value from 0, Reduce to surge on the electric current of laser module, extends the service life of laser.
Detailed description of the invention:
Fig. 1 is a kind of whole functional block diagram of digital laser pumping source of the present invention.
Fig. 2 is the basic circuit diagram of one-chip computer module 1.
Fig. 3 is the basic circuit diagram of display module 2.
Fig. 4 is the basic circuit diagram of indicating lamp module 3.
Fig. 5 is the basic circuit diagram of key module 4.
Fig. 6 is the basic circuit diagram of coder module 5.
Fig. 7 is the basic circuit diagram of PC communication module 6.
Fig. 8 is the basic circuit diagram of soft-start module 7.
Fig. 9 is the basic circuit diagram of the first D/A converter module 8.
Figure 10 is the basic circuit diagram of electric current drive module 9.
Figure 11 is the basic circuit diagram of power sampling module 10.
Figure 12 is the basic circuit diagram of the second D/A converter module 11.
Figure 13 is the basic circuit diagram of temperature control modules 12.
Figure 14 is the basic circuit diagram of temperature sampling module 13.
Figure 15 is the basic circuit diagram of analog-to-digital conversion module 14.
Figure 16 is the basic circuit diagram of laser module 15.
Figure 17 is front panel schematic diagram of the invention.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific structure and working principle of each section circuit of the present invention.Marked parameter in attached drawing For the preferred circuit parameter of each embodiment.
1 overall system architecture of embodiment
As shown in Fig. 1 and Figure 17, system structure has one-chip computer module 1, display module 2, indicating lamp module 3, key module 4, coder module 5, PC communication module 6, soft-start module 7, the first D/A converter module 8, electric current drive module 9, power take Egf block 10, the second D/A converter module 11, temperature control modules 12, temperature sampling module 13, analog-to-digital conversion module 14, laser Device module 15 and front panel 16.
2 one-chip computer module of embodiment
As shown in Fig. 2, the structure of the one-chip computer module 1 is, the power end and ground terminal of single-chip microcontroller U1 meets+5V respectively Power supply and digitally, power end also passes through capacitor C1 and connects digitally, the indirect crystal oscillator Y1 of port x 1 and port x 2, port x 1 and end Mouth X2 is also connect digitally by capacitor C2 and capacitor C3 respectively, and port P00~port P07 passes through resistance R1~resistance R8 respectively and connects + 5V power supply, the model of the single-chip microcontroller U1 are STC89C51, P0 mouthfuls (P00~P07), P1 mouthfuls (P10~P17), P2 mouthfuls of (P20 ~P27) it is common I/O port, the P0 mouthfuls of data as single-chip microcontroller and A/D, D/A and display chip are used in the present invention Mouth is exchanged, each pin of P2 mouthfuls, P3 mouthfuls is used as control terminal, each chip co-ordination in control system is realized, in addition, the list There are also the crystal oscillator input terminals that port x 1 and port x 2 are single-chip microcontroller for piece machine, provide work dominant frequency, end to single-chip microcontroller by external crystal-controlled oscillation Mouth RESET is the reseting port of single-chip microcontroller, and port RD is that external memory reads control terminal, and port WR is that external memory writes control End, port RXD are serial input mouth, and port TXD is Serial output mouth, and middle fracture INT0 and middle fracture INT1 are in 2 outsides Fracture, port T0 and port T1 are the external input mouth of timer 0 and timer 1.One-chip computer module 1 is responsible for the control of whole system Work processed, for function needed for coordinating each Implement of Function Module.
3 display module of embodiment
As shown in figure 3, the structure of the display module 2 is, port D0~port D7 of display screen U2 distinguishes order piece Port P00~port P07 of machine U1, port EN, port R/W and the port RS of display screen U2 connect the port of single-chip microcontroller U1 respectively P10, port WR and port RD, the port VL and port BL- of display screen U2 connect digitally, and port BL+ connects slide rheostat W1's End of slide wire, port VDD and port VSS connect+5V power supply and digitally respectively, are further connected with capacitor between port VDD and port VSS A termination+5V power supply of C4, slide rheostat W1, another termination is digitally.The model LCD1602 of display screen U2, it is one The integrated liquid crystal display of a 16*2, totally 14 pins, port VDD and port VSS are respectively positive pole and power ground, port VL is liquid crystal display bias, and port RS is data-/ command selection, and port R/W is read/write selection, and port EN is enable signal, end Mouth D0~port D7 is 8 data channel, and port BL+ and port BL- are respectively backlight positive and negative anodes.Display screen U2 is located at front On plate 16, it to be used for display system running parameter.
4 indicating lamp module of embodiment
As shown in figure 4, the structure of the indicating lamp module 3 is, the common order piece in one end of resistance R13 and resistance R14 The port P11 of machine U1, the other end connect the grid of field-effect tube Q1 and field-effect tube Q2, one end of resistance R15 and resistance R16 respectively The port P12 and port P13 of single-chip microcontroller U1 are met respectively, and the other end connects the grid of field-effect tube Q3 and field-effect tube Q4, field respectively The drain electrode of effect pipe Q1 connects simulation ground, and one end of source electrode connecting resistance R9, field-effect tube Q2~field-effect tube Q4 source electrode connects mould Quasi- ground, the one end connecting resistance R10~resistance R12, resistance R9~resistance R12 other end distinguish sending and receiving optical diode respectively for drain electrode D1~light emitting diode D4 cathode, light emitting diode D1~light emitting diode D4 anode connect+12V power supply.Wherein, it shines Diode D1~light emitting diode D4 is respectively positioned on front panel 16, is 4 status indicator lamps on front panel 16, is used to indicate and is The various working conditions of system.
5 key module of embodiment
As shown in figure 5, the structure of the key module 4 is, the one end switch S1~switch S6 and capacitor C5~capacitor One end of C10 connects digitally, and switch S1~switch S6 other end connects capacitor C5~capacitor C10 other end respectively, also divides One end of other connecting resistance R17~resistance R22 also connects Schmidt trigger U3A~Schmidt trigger U3F input terminal respectively, Resistance R17~resistance R22 other end connects 5V power supply, Schmidt trigger U3A~Schmidt trigger U3F output end point Totally 6 ports port P14~port P17, the port P20~port P21 of single-chip microcontroller U1 are not connect.Wherein switch S1~switch S6 points Be not mode selection button 1603 on front panel 16, power setting key 1606, current limliting setting button 1607, electric current setting by Key 1608, temperature setting key 1609 and output control button 1612, this 6 switches are 6 contact key switches, for giving Single-chip microcontroller input control signal, the Schmidt trigger in the module are used to eliminate the jittering noise of key.
6 coder module of embodiment
As shown in fig. 6, the structure of the coder module 5 is, the 1 foot connecting resistance R23 of rotary encoder Encoder1 One end, one end of capacitor C11 and the input terminal of Schmidt trigger U4A, one end of 2 foot connecting resistance R24, capacitor C12 one The input terminal at end and Schmidt trigger U4B, 3 feet connect digitally, and the other end of resistance R23 and resistance R24 connect+5V power supply, The other end of capacitor C11 and capacitor C12 connect digitally, the output end point of Schmidt trigger U4A and Schmidt trigger U4B The middle fracture INT0 and middle fracture INT1 of single-chip microcontroller U1 are not met.Rotary encoder Encoder1 is located on front panel 16, for setting Parameter needed for setting system, Schmitt trigger circuit are used to eliminate the jittering noise of rotary encoder.
Embodiment 7PC communication module
As shown in fig. 7, the structure of the PC communication module 6 is, the port VCC and port GND of electrical level transferring chip U15 + 5V power supply and digitally is connect respectively, and port V+ connects+5V power supply by capacitor C13, and port V- is connect digitally by capacitor C14, end The indirect capacitor C16, port T1IN and port R1OUT of the indirect capacitor C15, port C2+ and port C2- of mouth C1+ and port C1- The port TXD and port RXD of single-chip microcontroller U1 are met respectively, and port R1IN and port T1OUT connect 3 feet and 2 of D-shaped interface J1 respectively 5 feet of foot, D-shaped interface J1 connect digitally, and the model of the electrical level transferring chip U15 is MAX232, it is a TTL- RS232 conversion chip, port V+ (2 foot), port V- (6 foot), port C1+ (1 foot), port C1- (3 foot), port C2+ (4 foot) With port C2- (5 foot) internal charge pump circuit port, external capacitor C13~capacitor C16 is cooperated to be used to generate+12V and -12V Power supply；Port R1IN (13 foot), port R1OUT (12 foot), port T1IN (11 foot) and port T1OUT (14 foot) are the first number According to channel, port R2IN (8 foot), port R2OUT (9 foot), port T2IN (10 foot) and port T2OUT (7 foot) are the second data Channel, port VCC (16 foot) and port GND (15 foot) are power supply and ground respectively.D-shaped interface J1 is a 9 needle D-shaped interfaces.PC Communication module 9 is responsible for the data communication between single-chip microcontroller and microcomputer of the invention, and the program of single-chip microcontroller can be realized by the module Downloading with or micro-computer controlled function.
8 soft-start module of embodiment
As shown in figure 8, the structure of the soft-start module 7 is, one end of resistance R25 meets the port P22 of single-chip microcontroller U1, The base stage of another termination triode Q5, the emitter of triode Q5 connect+5V power supply, one end of collector connecting resistance R26, capacitor The other end of one end of C17 and the grid of field-effect tube Q6, resistance R26 and capacitor C17 connect simulation ground, the source of field-effect tube Q6 Pole connects simulation ground, and drain electrode is denoted as port SoftStart, is connected with the port SoftStart_in of electric current drive module 9.Work as monolithic When the port P22 of machine is low level, triode Q5 conducting, field-effect tube Q6 is also switched on, so that the voltage at the SoftStart of port Close to 0, so that effective input voltage of electric current drive module 9 is 0, electric current drive module 9 will not generate driving current；When When pressing the output control button 1612 on front panel 16, the state of the port P22 of single-chip microcontroller switchs to high level, and triode Q5 is cut Only, but since the energy storage of capacitor C17 acts on, the grid voltage of field-effect tube Q6 will not become 0 at once, but with capacitor C17 Gently drop to 0 with the discharge process of resistance R26, field-effect tube Q6 is also from state gentle transition to off state, electric current Effective input voltage of drive module 9 also gently can be increased to normal voltage from 0 with the voltage of port SoftStart, herein mistake Cheng Zhong, the driving current of generation is also to be gradually increased to setting electric current value from 0, to realize the soft start to laser module Driving, avoids the upper surge to laser.
9 first D/A converter module of embodiment and the second D/A converter module
As shown in figure 9, the structure of first D/A converter module 8 is, the digital signal input of digital analog converter U6 Port is connected with the port P0 of single-chip microcontroller U1, the port P23 phase of the port BYTE1/BYTE2 and single-chip microcontroller U1 of digital analog converter U6 Even, the port P24 of the port CS and single-chip microcontroller U1 of digital analog converter U5 are connected, port WR1, the port WR2 of digital analog converter U5 It is connected with the port WR of single-chip microcontroller U1, port x FER is connected with the port RD of single-chip microcontroller U1, the power end of digital analog converter U6 + 5V power supply is connect, port DGND connects digitally, and port AGND and port Iout2 connect simulation ground, and port Rfb passes through adjustable resistance W2 Simulation ground is connect, port Iout1 connects the non-inverting input terminal of amplifier U7A, and the positive-negative power end of amplifier U7A connects+12V power supply and mould respectively Quasi- ground, the indirect resistance R27 of inverting input terminal and output end, inverting input terminal also pass through resistance R28 and connect simulation ground, digital-to-analogue conversion The reference voltage input terminal Vref of device U6 is denoted as port Vref_in1, connects the port V_refer in analog-to-digital conversion module 14, amplifier The output end of U7A is denoted as port I_ctr, is connected with the port I_ctr_in in electric current drive module 9.The digital analog converter The model of U6 is DAC1232LCJ, it is a 12-bit digital-to-analog converter, and 20 pins, pin 13~16,4~7 is number letter Number input port, port BYTE1/BYTE2 (19 foot) are byte sequence control port, and port CS is chip select terminal mouth, port WR1, Port WR2 is reading data control port, and port x FER is conversion and control port, and port Vcc is power input, port Vref For reference voltage input terminal mouth, port Rfb is feedback resistance input port, port Iout1, the output of port Iout2 switching current Port, port AGND and port DGND are respectively to simulate ground and digital ground terminal mouth.The structure of second D/A converter module 11 is as schemed Shown in 12, structure and working principle and the first D/A converter module 8 are essentially identical, no longer repeat herein.First digital-to-analogue conversion Module 8 is responsible for the driving current value (digital quantity) that single-chip microcontroller is sent out being converted into corresponding analog voltage, is electric current drive module 9 Control voltage is provided, the second D/A converter module 11 is responsible for the temperature value (digital quantity) that single-chip microcontroller is sent out being converted into corresponding mould Quasi- voltage provides control voltage for temperature control modules 12.
10 electric current drive module of embodiment
As shown in Figure 10, the structure of the electric current drive module 9 is that one end of resistance R29 is denoted as port I_ctr_in, The non-inverting input terminal of another termination amplifier U7B, and it is denoted as port SoftStart_in, the inverting input terminal and output of amplifier U7B The indirect capacitor C18 at end, the grid of output termination field-effect tube Q7, the drain electrode of field-effect tube Q7 connect+12V power supply, and source electrode connects sharp One end of the anti-phase input terminating resistor R30 of the port LD+ of light device module 15, amplifier U7B and one end of resistance R31, resistance R30 Another termination+12V power supply, the output end of another termination amplifier U8A of resistance R31 and one end of adjustable resistance W3, and conduct The current feedback terminal of electric current drive module is denoted as port I_F, connects the port I_F_in in analog-to-digital conversion module 14, adjustable resistance One end of another terminating resistor R32 of W3, one end of another terminating resistor R33 of resistance R32 and the anti-phase input of amplifier U8A End, another termination of resistance R33 simulate ground, and the positive-negative power end of amplifier U8A connects+12V power supply and simulation ground, homophase input respectively One end of terminating resistor R34, one end of another terminating resistor Rs1 of resistance R34 also meet the port LD- of laser module 15, electricity Another termination for hindering Rs1 simulates ground.Electric current drive module 9 is responsible for the control voltage for exporting the first D/A converter module 8 and is converted At corresponding driving current, laser diode for driving laser module 15 to be internally integrated generates light by laser diode Power.
11 power sampling module of embodiment
As shown in figure 11, the structure of the power sampling module 10 is, the inverting input terminal and output end of amplifier U8B it Indirect resistance R36, one end of homophase input terminating resistor R35 also meet the port PD+ of laser module 15, and resistance R35's is another The non-inverting input terminal for terminating amplifier U9A, also meets the port PD- of laser module 15, and the positive-negative power end of amplifier U9A connects respectively+ 12V power supply and simulation ground, inverting input terminal connect simulation ground, the indirect resistance of inverting input terminal and output end by resistance R38 R39, inverting input terminal also one end of connecting resistance R40, one end of another terminating resistor R37 of resistance R40 and amplifier U8B reverse phase are defeated Enter end, the output end of another termination amplifier U9A of resistance R37, the output end of amplifier U8B is denoted as port as Feedback of Power end P_F meets the port P_F_in in analog-to-digital conversion module 14.Power sampling module 10 is responsible for the light function exported to laser module 15 Rate is sampled and is converted into corresponding analog voltage, is then passed to analog-to-digital conversion module 14.
12 temperature control modules of embodiment
As shown in figure 13, the structure of the temperature control modules 12 is, the positive-negative power end of amplifier U11A connects respectively+ 12V power supply and simulation ground, non-inverting input terminal are denoted as port T_ctr_in, the indirect capacitor C19 of inverting input terminal and output end, instead Phase input terminal also connects the output end of amplifier U12B, one end of output terminating resistor R43 of amplifier U11A, one end of resistance R44 and One end of capacitor C20, another termination+5V power supply of capacitor C20, the inverting input terminal of another termination amplifier U11B of resistance R43, The other end of resistance R44 connects the base stage of Darlington transistor Q8 and Darlington transistor Q10, the current collection of Darlington transistor Q8 and Darlington transistor Q10 Pole connects+12V power supply and simulation ground respectively, and emitter is connected together, also same mutually defeated with one end of resistance Rs2 and amplifier U12A Enter end to be connected, the other end of resistance Rs2 is connected with the non-inverting input terminal of amplifier U12B, also meets the port TEC of laser module 15 +, the positive-negative power end of amplifier U12A connects+12V power supply respectively and simulates ground, the indirect resistance R50 of inverting input terminal and output end, One end of inverting input terminal also one end of connecting resistance R51 and resistance R49, another termination+5V power supply of resistance R51, resistance R49's The inverting input terminal of one end of another terminating resistor R48, one end of resistance R47 and amplifier U12B, another termination fortune of resistance R48 Put the output end of U12A, the output end of another termination amplifier U12B of resistance R47, the homophase input termination+5V electricity of amplifier U11B The indirect resistance R45 of source, inverting input terminal and output end exports one end of terminating resistor R46 and one end of capacitor C21, capacitor Another termination+5V power supply of C21, the other end of resistance R46 connect the base stage of Darlington transistor Q9 and Darlington transistor Q11, Darlington transistor The collector of Q9 and Darlington transistor Q11 connect+12V power supply and simulation ground respectively, and emitter is connected together, and also connect laser module 15 In port TEC-.Temperature control modules 13 are responsible for for the control voltage that the second D/A converter module 12 exports being converted into driving electricity Stream, the thermoelectric cooler for driving laser module 15 to be internally integrated, to control the operating temperature of laser module 15.
13 temperature sampling module of embodiment
As shown in figure 14, the structure of the temperature sampling module 13 is that the cathode of zener diode D5 connects+5V power supply, Another termination of one end of anode connecting resistance R52 and the non-inverting input terminal of amplifier U13A, resistance R52 simulates ground, amplifier U13A's Positive-negative power end connects+12V power supply and simulation ground respectively, and the indirect capacitor C22 of inverting input terminal and output end exports terminating resistor One end of R54, one end of anti-phase input terminating resistor R53 and the emitter of triode Q12, another termination+5V electricity of resistance R53 Source, the base stage of another termination triode Q12 of resistance R54, one end of the collector connecting resistance R55 of triode Q12 also connects laser The non-inverting input terminal of another termination amplifier U13B of the port NTC+ of device module 15, resistance R55, the inverting input terminal of amplifier U13B Simulation ground, the resistance R56 being serially connected indirectly and adjustable resistance W5 of inverting input terminal and output end are met by resistance R57；It is defeated Outlet is denoted as port T_F as temperature feedback end, meets the port T_F_in of analog-to-digital conversion module 14.Temperature sampling module 13 is negative Duty is sampled to the operating temperature of laser module 15 and is converted into corresponding analog voltage, is then passed to analog-to-digital conversion module 14。
14 analog-to-digital conversion module of embodiment
As shown in figure 15, the structure of the analog-to-digital conversion module 14 is that the port CLK of analog-digital converter U14 passes through capacitor C23 connects digitally, and port CS meets the port P26 of single-chip microcontroller U1, and port RD, port WR meet the port RD of single-chip microcontroller U1, end respectively Mouth WR, port HBEN meet the port P23 of single-chip microcontroller U1, and port SHDN connects+5V power supply, the data output end of analog-digital converter U14 With the port P0 of single-chip microcontroller U1 by a high position to high-order, low level to low level in the way of be sequentially connected, the port of analog-digital converter U14 Vdd connects+5V power supply, and port DGND connects digitally, and port AGND connects simulation ground, and port INT meets the port P27 of single-chip microcontroller U1, holds Mouth CH0, port CH4, port CH5, port CH6 and port CH7 connect simulation ground, and port REF and port REFADJ pass through respectively Capacitor C25 and capacitor C24 connects simulation ground, and port REF also connects the non-inverting input terminal of amplifier U15A, the positive-negative power end of amplifier U15A + 12V power supply and simulation ground are connect respectively, and inverting input terminal is connected with output end, and holds as the reference voltage, is denoted as port V_ The port CH1 of refer, analog-digital converter U14 connect simulation ground by capacitor C26, and as current feedback input terminal, are denoted as port I_F_in, port CH2 connect simulation ground by capacitor C27, and as Feedback of Power input terminal, are denoted as port P_F_in, port CH3 Simulation ground is connect by capacitor C28, and as temperature feedback input terminal, is denoted as port T_F_in.Analog-to-digital conversion module 14 utilizes mould 3 analog signal input channels of number converter U14, by voltage value corresponding to driving current, Output optical power, operating temperature It is converted into corresponding digital quantity, and sends single-chip microcontroller U1 back to and is stored.The model of the analog-digital converter U14 is MAX197, It is a 8 Channel 12-Bit analog-digital converters, and 28 pins, wherein 7~pin of pin 14 is data output end, and port HBEN is Data high-low-position selects control terminal, and for the multiplexing of 12 transformation results, port CS is chip select terminal mouth, port RD and port WR is respectively Read-write Catrol port, and port CLK is input end of clock mouth, and port SHDN is that port, end is arranged in power-down mode Mouth Vdd is power port, and port DGND and port AGND are respectively that digitally with simulation port, port CH0~port CH7 are 8 analog signal input channels, port INT is interrupt output port, and when conversion end and when data can be accessed, which becomes For low level, port REFADJ is that bandwidth reference voltage adjusts port, caches output/caching input port on the basis of the REF of port, In internal reference cache mode, the reference voltage of 4.096V is exported, for providing reference voltage to digital analog converter.
15 laser module of embodiment
The laser module 15 of the present embodiment selects JDI LC96 butterfly encapsulated laser module, and encapsulation and pin show It is intended to as shown in figure 16, which has been internally integrated laser diode LD, photodiode PD, thermoelectric cooler TEC With thermistor NTC, for the laser output mouth 1614 that tail optical fiber is directly connected on front panel 16 for exporting laser, the module is total There are 14 pins, wherein 6 feet, 7 feet, 8 feet, 9 feet, 12 feet are sky pin (NC), 1 foot and 14 feet are internal thermoelectric cooling respectively Two current input terminals (port TEC+ and port TEC-) of device, 2 feet and 5 feet are two terminals for being internally integrated thermistor Mouthful (port NTC+ and port NTC-), port NTC- connect simulation ground, and 3 feet and 4 feet are to be internally integrated two of photodiode to connect The size of current of line end mouth (port PD+ and port PD-), the output of this Two-port netwerk has reacted the size of optical power, 10 feet and 11 feet It is the anode and cathode (port LD+ and port LD-) of inner laser diode, 13 feet are earthing of casing end.
16 front panel of embodiment
As shown in figure 17, the structure of the front panel 16 has, and display screen 1601, power switch 1602, model selection are pressed Key 1603, constant current indicator light 1604, invariable power indicator light 1605, power setting key 1606, current limliting setting button 1607, electric current Setting button 1608, temperature setting key 1609, parameter regulation knob 1610, overtemperature alarm indicator light 1611, output control are pressed Key 1612, laser output indicator 1613 and laser output mouth 1614；Wherein, display screen 1601 is described in display module 2 Display screen U2, model LCD1602, power switch 1602 is the master switch of whole device, mode selection button 1603, power Setting button 1606, current limliting setting button 1607, electric current setting button 1608, temperature setting key 1609 and output control button 1612 this 6 keys are switch S1~switch S6 in key module 4, constant current indicator light 1604, invariable power indicator light respectively 1605, overtemperature alarm indicator light 1611 and laser output indicator 1613 this 4 indicator lights refer respectively to show the hair in lamp module 3 Optical diode D1~light emitting diode D4, parameter regulation knob 1610 are rotary encoders described in coder module 5 Encoder1, laser output mouth 1614 are connected with the tail optical fiber of laser module 15.
The course of work of the invention of embodiment 17
With reference to the entire block diagram of attached drawing 1 and the front panel of attached drawing 17, the course of work of the invention is as follows: being selected by operating mode It selects key 1603 and selects required operating mode-constant current mode or constant power mode, pass through power setting key 1606, limit It flows setting button 1607, electric current setting button 1608, temperature setting key 1609 and selects the parameter to be adjusted and by display screen 1601 are shown, each parameter value is arranged by parameter regulation knob 1610 and is sent into one-chip computer module 1.If it is work in constant current Under mode, single-chip microcontroller, which can send the current value (digital quantity) of setting to the first D/A converter module 8, to be converted into simulating electricity accordingly Pressure, then corresponding driving current is generated by electric current drive module 9, output to laser module 15 drives laser module 15 to exist It works under the electric current of setting and generates laser, the laser output mouth on front panel 16 is passed through by the tail optical fiber of laser module 15 1614 output laser, while the laser power exported can be sampled again by 14 turns of analog-to-digital conversion module by power sampling module 10 Digital quantity is changed into send single-chip microcontroller back to and stored by single-chip microcontroller；If it is work under constant power mode, single-chip microcontroller can be by setting Laser power value is compared with the practical laser performance number sampled back, and difference is carried out PID arithmetic, operation result (number Amount) it send to the first D/A converter module 8 and is converted into corresponding analog voltage, then drive is converted further by electric current drive module 9 Streaming current, output is to laser module 15, if laser power sample back and to be arranged power unequal, single-chip microcontroller if passes through Pid algorithm adjust automatically driving current, until both equal, the laser of such laser module 15 just stable output power.Temperature Degree sampling module 13 is sampled the operating temperature of laser module 15 and is converted into digital quantity by analog-to-digital conversion module 14, send It returns single-chip microcontroller to be stored, the operating temperature sampled back can be compared by single-chip microcontroller with the temperature of setting, and difference carries out PID fortune It calculates, and operation result is sent to the second D/A converter module 11 and is converted into corresponding analog voltage, then by temperature control modules 12 Corresponding electric current is generated, to drive thermoelectric cooler built-in in laser module 15 to carry out temperature control, if the temperature sampled back Value and the temperature value of setting are unequal, then single-chip microcontroller can be automatically adjusted the output of temperature control modules 12 by pid algorithm Current value, and then the working condition of thermoelectric cooler in laser module 15 is adjusted, until actual temperature is equal with set temperature, Laser module 15 will work in set at a temperature of constant temperature in this way.If the speed that laser module 15 generates heat is super The speed for crossing thermoelectric cooler refrigeration, then can make operating temperature gradually rise, and system is no longer able to work in temperature constant state, when When operating temperature is increased to preset alarm temperature, single-chip microcontroller, which can control the first D/A converter module 8, will export digital quantity Become 0, while soft-start module 7 is adjusted to closed state, just there will be no electric current to export to laser module 15 in this way, together When control front panel 16 on overtemperature alarm indicator light 1611 flash, with prompt user close system, the overtemperature alarm of this system Function substantially increases the safety and reliability of whole system.

Claims (3)

1. a kind of digital laser pumping source, structure has electric current drive module (9), temperature control modules (12), laser module (15) and front panel (16), which is characterized in that structure there are also one-chip computer module (1), display module (2), indicating lamp module (3), Key module (4), coder module (5), PC communication module (6), soft-start module (7), the first D/A converter module (8), function Rate sampling module (10), the second D/A converter module (11), temperature sampling module (13) and analog-to-digital conversion module (14)；
The structure of the one-chip computer module (1) is that the power end and ground terminal of single-chip microcontroller U1 connects+5V power supply and number respectively Ground, power end also pass through capacitor C1 and connect digitally, and the indirect crystal oscillator Y1 of port x 1 and port x 2, port x 1 and port x 2 are also distinguished It is connect digitally by capacitor C2 and capacitor C3, port P00~port P07 passes through resistance R1~resistance R8 respectively and meets+5V power supply, institute The model of the single-chip microcontroller U1 stated is STC89C51；
The structure of the display module (2) is that port D0~port D7 of display screen U2 meets the port P00 of single-chip microcontroller U1 respectively Port EN, port R/W and the port RS of~port P07, display screen U2 meet the port P10, port WR and end of single-chip microcontroller U1 respectively Mouthful RD, the port VL and port BL- of display screen U2 connect digitally, and port BL+ meets the end of slide wire of slide rheostat W1, port VDD + 5V power supply and digitally is connect respectively with port VSS, and capacitor C4, slide rheostat W1 are further connected between port VDD and port VSS A termination+5V power supply, it is another termination digitally, the model LCD1602 of the display screen U2；
The structure of the indicating lamp module (3) is that one end of resistance R13 and resistance R14 connect the port of single-chip microcontroller U1 jointly P11, the other end connect the grid of field-effect tube Q1 and field-effect tube Q2, one end difference order piece of resistance R15 and resistance R16 respectively The port P12 and port P13 of machine U1, the other end connect the grid of field-effect tube Q3 and field-effect tube Q4 respectively, field-effect tube Q1's Drain electrode connects simulation ground, one end of source electrode connecting resistance R9, and field-effect tube Q2~field-effect tube Q4 source electrode connects simulation ground, drain electrode point One end of other connecting resistance R10~resistance R12, resistance R9~resistance R12 other end distinguish sending and receiving optical diode D1~luminous two The cathode of pole pipe D4, light emitting diode D1~light emitting diode D4 anode connect+12V power supply；
The structure of the key module (4) is that the one end switch S1~switch S6 connects with the one end capacitor C5~capacitor C10 Digitally, switch S1~switch S6 other end connects capacitor C5~capacitor C10 other end respectively, and also respectively connecting resistance R17~ One end of resistance R22 also meets Schmidt trigger U3A~Schmidt trigger U3F input terminal, resistance R17~resistance respectively The other end of R22 connects 5V power supply, and Schmidt trigger U3A~Schmidt trigger U3F output end meets single-chip microcontroller U1 respectively Totally 6 ports port P14~port P17, port P20~port P21；
The structure of the coder module (5) is one end of the 1 foot connecting resistance R23 of rotary encoder Encoder1, capacitor One end of C11 and the input terminal of Schmidt trigger U4A, one end of 2 foot connecting resistance R24, one end of capacitor C12 and Schmidt's touching The input terminal of device U4B is sent out, 3 feet connect digitally, and the other end of resistance R23 and resistance R24 connect+5V power supply, capacitor C11 and capacitor The other end of C12 connects digitally, and the output end of Schmidt trigger U4A and Schmidt trigger U4B meet single-chip microcontroller U1 respectively Middle fracture INT0 and middle fracture INT1；
The structure of the PC communication module (6) is that the port VCC and port GND of electrical level transferring chip U15 connects+5V electricity respectively Source and digitally, port V+ connects+5V power supply by capacitor C13, and port V- is connect digitally by capacitor C14, port C1+ and port The indirect capacitor C16, port T1IN and port R1OUT of the indirect capacitor C15, port C2+ and port C2- of C1- distinguish order piece The port TXD and port RXD of machine U1, port R1IN and port T1OUT meet 3 feet and 2 feet of D-shaped interface J1, D-shaped interface J1 respectively 5 feet connect digitally, the model of the electrical level transferring chip U15 is MAX232, and D-shaped interface J1 is a 9 needle D-shaped interfaces；
The structure of the soft-start module (7) is that one end of resistance R25 connects the port P22 of single-chip microcontroller U1, three poles of another termination The base stage of pipe Q5, the emitter of triode Q5 connect+5V power supply, one end of collector connecting resistance R26, capacitor C17 one end and field The other end of the grid of effect pipe Q6, resistance R26 and capacitor C17 connect simulation ground, and the source electrode of field-effect tube Q6 connects simulation ground, leakage Pole is denoted as port SoftStart, is connected with the port SoftStart_in of electric current drive module (9)；
The structure of first D/A converter module (8) is the digital signal input end mouth and single-chip microcontroller of digital analog converter U6 The port P0 of U1 is connected, and the port P23 of the port BYTE1/BYTE2 and single-chip microcontroller U1 of digital analog converter U6 are connected, digital-to-analogue conversion The port P24 of the port CS and single-chip microcontroller U1 of device U5 are connected, port WR1, the port WR2 of digital analog converter U5 with single-chip microcontroller U1 Port WR be connected, port x FER is connected with the port RD of single-chip microcontroller U1, the power supply termination+5V power supply of digital analog converter U6, hold Mouth DGND connects digitally, and port AGND and port Iout2 connect simulation ground, and port Rfb connects simulation ground, port by adjustable resistance W2 Iout1 connects the non-inverting input terminal of amplifier U7A, and the positive-negative power end of amplifier U7A connects+12V power supply and simulation ground, anti-phase input respectively The indirect resistance R27 at end and output end, inverting input terminal also pass through resistance R28 and connect simulation ground, the reference electricity of digital analog converter U6 Pressure input terminal Vref is denoted as port Vref_in1, connects the port V_refer in analog-to-digital conversion module (14), the output of amplifier U7A End is denoted as port I_ctr, is connected with the port I_ctr_in in electric current drive module (9)；The type of the digital analog converter U6 It number is DAC1232LCJ；
The structure of the electric current drive module (9) is that one end of resistance R29 is denoted as port I_ctr_in, another termination amplifier The non-inverting input terminal of U7B, and it is denoted as port SoftStart_in, the inverting input terminal of amplifier U7B and the indirect capacitor of output end C18, the grid of output termination field-effect tube Q7, the drain electrode of field-effect tube Q7 connect+12V power supply, and source electrode connects laser module (15) Port LD+, one end of the anti-phase input terminating resistor R30 of amplifier U7B and one end of resistance R31, another termination of resistance R30 + 12V power supply, the output end of another termination amplifier U8A of resistance R31 and one end of adjustable resistance W3, and mould is driven as electric current The current feedback terminal of block is denoted as port I_F, meets the port I_F_in in analog-to-digital conversion module (14), and adjustable resistance W3's is another One end of terminating resistor R32, one end of another terminating resistor R33 of resistance R32 and the inverting input terminal of amplifier U8A, resistance R33 Another termination simulate ground, the positive-negative power end of amplifier U8A connect respectively+12V power supply and simulation ground, homophase input terminating resistor One end of R34, one end of another terminating resistor Rs1 of resistance R34, also meets the port LD- of laser module (15), resistance Rs1 Another termination simulate ground；
The structure of the power sampling module (10) is the inverting input terminal of amplifier U8B and the indirect resistance R36 of output end, One end of homophase input terminating resistor R35 also connects the port PD+ of laser module (15), another termination amplifier of resistance R35 The non-inverting input terminal of U9A, also meets the port PD- of laser module (15), and the positive-negative power end of amplifier U9A connects+12V power supply respectively With simulation ground, inverting input terminal is connect by resistance R38 simulates ground, the indirect resistance R39 of inverting input terminal and output end, and reverse phase is defeated Enter one end that connecting resistance R40 is gone back at end, one end of another terminating resistor R37 of resistance R40 and amplifier U8B inverting input terminal, resistance The output end of another termination amplifier U9A of R37, the output end of amplifier U8B are denoted as port P_F, connect modulus as Feedback of Power end Port P_F_in in conversion module (14)；
The structure of second D/A converter module (11) is the digital signal input end mouth and monolithic of digital analog converter U10 The port P0 of machine U1 is connected, and the port P23 of the port BYTE1/BYTE2 and single-chip microcontroller U1 of digital analog converter U10 are connected, and digital-to-analogue turns The port P25 of the port CS and single-chip microcontroller U1 of parallel operation U10 are connected, and port WR1, the port WR2 of digital analog converter U10 is and monolithic The port WR of machine U1 is connected, and port x FER is connected with the port RD of single-chip microcontroller U1, the power supply termination+5V electricity of digital analog converter U10 Source, port DGND connect digitally, and port AGND and port Iout2 connect simulation ground, and port Rfb connects simulation by adjustable resistance W4 Ground, port Iout1 meet the non-inverting input terminal of amplifier U9B, the inverting input terminal of amplifier U9B and the indirect resistance R41 of output end, instead Phase input terminal also passes through resistance R42 and connects simulation ground, and the reference voltage input terminal Vref of digital analog converter U10 is denoted as port Vref_ In2 meets the port V_refer in analog-to-digital conversion module (14), and the output end of amplifier U9B is denoted as port T_ctr, controls with temperature Port T_ctr_in in module (12) is connected；The model of the digital analog converter U10 is DAC1232LCJ；
The structure of the temperature control modules (12) is that the positive-negative power end of amplifier U11A connects+12V power supply and simulation respectively Ground, non-inverting input terminal are denoted as port T_ctr_in, the indirect capacitor C19 of inverting input terminal and output end, and inverting input terminal also connects The output end of amplifier U12B, output one end of terminating resistor R43 of amplifier U11A, one end of resistance R44 and capacitor C20 one End, another termination+5V power supply of capacitor C20, the inverting input terminal of another termination amplifier U11B of resistance R43, resistance R44's is another One end connects the base stage of Darlington transistor Q8 and Darlington transistor Q10, and the collector of Darlington transistor Q8 and Darlington transistor Q10 meet+12V respectively Power supply and simulation ground, emitter are connected together, and are also connected with the non-inverting input terminal of one end of resistance Rs2 and amplifier U12A, electricity The other end of resistance Rs2 is connected with the non-inverting input terminal of amplifier U12B, also meets the port TEC+ of laser module (15), amplifier U12A Positive-negative power end connect respectively+12V power supply and simulation ground, the indirect resistance R50 of inverting input terminal and output end, inverting input terminal Also one end of one end of connecting resistance R51 and resistance R49, another termination+5V power supply of resistance R51, another termination electricity of resistance R49 One end, one end of resistance R47 and the inverting input terminal of amplifier U12B of R48 are hindered, another termination amplifier U12A's of resistance R48 is defeated Outlet, the output end of another termination amplifier U12B of resistance R47, the homophase input termination+5V power supply of amplifier U11B, anti-phase input The indirect resistance R45 at end and output end exports one end of terminating resistor R46 and one end of capacitor C21, the other end of capacitor C21 + 5V power supply is connect, the other end of resistance R46 connects the base stage of Darlington transistor Q9 and Darlington transistor Q11, Darlington transistor Q9 and Darlington transistor The collector of Q11 connects+12V power supply and simulation ground respectively, and emitter is connected together, and also connects the port in laser module (15) TEC-；
The structure of the temperature sampling module (13) is that the cathode of zener diode D5 meets+5V power supply, anode connecting resistance R52 One end and amplifier U13A non-inverting input terminal, another termination of resistance R52 simulates ground, the positive-negative power end difference of amplifier U13A + 12V power supply and simulation ground are connect, the indirect capacitor C22 of inverting input terminal and output end exports one end of terminating resistor R54, reverse phase One end of terminating resistor R53 and the emitter of triode Q12 are inputted, another termination+5V power supply of resistance R53, resistance R54's is another The base stage of one termination triode Q12, one end of the collector connecting resistance R55 of triode Q12 also connects the end of laser module (15) The inverting input terminal of mouth NTC+, the non-inverting input terminal of another termination amplifier U13B of resistance R55, amplifier U13B pass through resistance R57 Meet simulation ground, the resistance R56 being serially connected indirectly and adjustable resistance W5 of inverting input terminal and output end；Output end is as temperature Feedback end is denoted as port T_F, meets the port T_F_in of analog-to-digital conversion module (14)；
The structure of the analog-to-digital conversion module (14) is that the port CLK of analog-digital converter U14 is connect digitally by capacitor C23, end Mouth CS meets the port P26 of single-chip microcontroller U1, and port RD, port WR meet the port RD of single-chip microcontroller U1, port WR respectively, and port HBEN connects The port P23 of single-chip microcontroller U1, port SHDN connect+5V power supply, the data output end of analog-digital converter U14 and the end P0 of single-chip microcontroller U1 Mouth is connected, and the port Vdd of analog-digital converter U14 connects+5V power supply, and port DGND connects digitally, and port AGND connects simulation ground, port INT meets the port P27 of single-chip microcontroller U1, and port CH0, port CH4, port CH5, port CH6 and port CH7 connect simulation ground, end Mouth REF and port REFADJ passes through capacitor C25 and capacitor C24 respectively and connects simulation ground, and port REF also connects the same mutually defeated of amplifier U15A Enter end, the positive-negative power end of amplifier U15A connects+12V power supply and simulation ground respectively, and inverting input terminal is connected with output end, and conduct Reference voltage end is denoted as port V_refer, and the port CH1 of analog-digital converter U14 connects simulation ground by capacitor C26, and as electricity Flow feedback input end, be denoted as port I_F_in, port CH2 by capacitor C27 with connecing simulation, and as Feedback of Power input terminal, It is denoted as port P_F_in, port CH3 connects simulation ground by capacitor C28, and as temperature feedback input terminal, is denoted as port T_F_ in；
The structure of the front panel (16) has, display screen (1601), power switch (1602), mode selection button (1603), Constant current indicator light (1604), invariable power indicator light (1605), power setting key (1606), current limliting setting button (1607), electricity Flow setting button (1608), temperature setting key (1609), parameter regulation knob (1610), overtemperature alarm indicator light (1611), Export control button (1612), laser output indicator (1613) and laser output mouth (1614)；Wherein, display screen (1601) It is display screen U2 described in display module (2), model LCD1602, power switch (1602) is the master switch of whole device, Mode selection button (1603), power setting key (1606), current limliting setting button (1607), electric current setting button (1608), Temperature setting key (1609) and output control button (1612) this 6 keys be respectively switch S1 in key module (4)~ Switch S6, constant current indicator light (1604), invariable power indicator light (1605), overtemperature alarm indicator light (1611) and laser output instruction This 4 indicator lights of lamp (1613) refer respectively to show light emitting diode D1~light emitting diode D4 in lamp module (3), parameter regulation Knob (1610) is rotary encoder Encoder1 described in coder module (5), laser output mouth (1614) and laser The tail optical fiber of device module (15) is connected.
2. a kind of digital laser pumping source according to claim 1, which is characterized in that each component parameters are as follows: resistance R1 ~resistance R24 is 10k Ω, and resistance R25 is 20k Ω, and resistance R26 is 5M Ω, and resistance R27~resistance R29 is 10k Ω, electricity Resistance R30 is 1M Ω, and resistance R31~resistance R34 is 10k Ω, and resistance R35 is 1.5k Ω, and resistance R36~resistance R39 is 180k Ω, resistance R40 are 20k Ω, and resistance R41 is 25k Ω, and resistance R42 is 18k Ω, and resistance R43 is 10k Ω, and resistance R44 is 0.1k Ω, resistance R45 are 10k Ω, and resistance R46 is 0.1k Ω, and resistance R47, resistance R48, resistance R50, resistance R51 are 180k Ω, resistance R49, resistance R52~resistance R57 are 20k Ω, and resistance Rs1, resistance Rs2 are 0.1 Ω, and slide rheostat W1 is 200k Ω, adjustable resistance W2, adjustable resistance W4, adjustable resistance W5 are 10k Ω, and adjustable resistance W3 is 100k Ω, and crystal oscillator Y1 is 12MHz, capacitor C1 are 0.1uF, and capacitor C2, capacitor C3 are 30pF, and capacitor C4 is 0.1uF, and capacitor C5~capacitor C12 is 0.47uF, capacitor C13, capacitor C14 are 0.1uF, and capacitor C15~capacitor C17 is 1uF, and capacitor C18~capacitor C21 is 0.47uF, capacitor C22 be 0.1uF, capacitor C23 be 100pF, capacitor C24 be 0.01uF, capacitor C25 be 4.7uF, capacitor C26~ Capacitor C28 is 10uF, and field-effect tube Q1 is 2SJ112, and field-effect tube Q2~field-effect tube Q4 and field-effect tube Q6 are 2sk1482, field-effect tube Q7 are IRF530, and triode Q5 is s9012, and Darlington transistor Q8, Darlington transistor Q9 are TIP132, are reached Islington pipe Q10, Darlington transistor Q11 are TIP137, and zener diode D5 is 2.5V, Schmidt trigger U3A~Schmidt's touching Hair device U3F is 6 working cells of the integrated schmidt trigger of a model SN7414, Schmidt trigger U4A, Shi Mi Special trigger U4B is 2 working cells of the integrated schmidt trigger of another model SN7414, amplifier U7A and amplifier U7B is 2 working cells of the integrated double operational of a model TLC2252, and amplifier U8A and amplifier U8B are second models For 2 working cells of the integrated double operational of TLC2252, amplifier U9A and amplifier U9B are the collection of third model TLC2252 At 2 working cells of double operational, amplifier U11A and amplifier U11B are the 2 of the integrated double operational of the 4th model TLC2252 A working cell, amplifier U12A and amplifier U12B are 2 working cells of the integrated double operational of the 5th model TLC2252, Amplifier U13A and amplifier U13B is 2 working cells of the integrated double operational of the 6th model TLC2252, and amplifier U15A is 1 working cell of the integrated double operational of seven model TLC2252.
3. a kind of digital laser pumping source according to claim 1 or 2, which is characterized in that the laser module It (15) is JDI LC96 butterfly encapsulated laser module.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN106785894B (en) * 2016-12-22 2019-05-07 吉林大学 A kind of digital semiconductor laser pulse driver
CN107508487A (en) * 2016-12-22 2017-12-22 长春工程学院 Pulse current source with multiple protective
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201549764U (en) * 2009-09-17 2010-08-11 杭州日月电器股份有限公司 LD laser-driven power source with high precision and stability
CN103368051A (en) * 2013-07-12 2013-10-23 北京信息科技大学 Semiconductor laser driving system used for fiber laser pump
CN203690702U (en) * 2013-11-08 2014-07-02 青岛黄海学院 Laser tube driving circuit for infrared sensor
CN104345750A (en) * 2013-07-25 2015-02-11 长春工业大学 Semiconductor laser constant current driving and temperature control system
CN105244758A (en) * 2015-11-04 2016-01-13 山东省计量科学研究院 Stable light source device for multi-wavelength semiconductor laser communication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201549764U (en) * 2009-09-17 2010-08-11 杭州日月电器股份有限公司 LD laser-driven power source with high precision and stability
CN103368051A (en) * 2013-07-12 2013-10-23 北京信息科技大学 Semiconductor laser driving system used for fiber laser pump
CN104345750A (en) * 2013-07-25 2015-02-11 长春工业大学 Semiconductor laser constant current driving and temperature control system
CN203690702U (en) * 2013-11-08 2014-07-02 青岛黄海学院 Laser tube driving circuit for infrared sensor
CN105244758A (en) * 2015-11-04 2016-01-13 山东省计量科学研究院 Stable light source device for multi-wavelength semiconductor laser communication

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