CN104638500B - For high power CO2The high pressure receiving control device of laser - Google Patents
For high power CO2The high pressure receiving control device of laser Download PDFInfo
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- CN104638500B CN104638500B CN201310574030.9A CN201310574030A CN104638500B CN 104638500 B CN104638500 B CN 104638500B CN 201310574030 A CN201310574030 A CN 201310574030A CN 104638500 B CN104638500 B CN 104638500B
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- fiber optic
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Abstract
The present invention relates to for high power CO2The high pressure receiving control device of laser, including permanent rate power supply, fiber optic receiver, DAC digital analog converters, analog switch, operational amplifier module and the power amplifier being linked in sequence；The permanent rate power supply is used to external communication electricity being converted into direct current, is fiber optic receiver, DAC digital analog converters, operational amplifier module, analog switch and power amplifier power supply；The fiber optic receiver is used to receive external fiber signal, and is converted to data signal and delivers to digital analog converter；The digital analog converter is used to the data signal of serial input being converted into analog current output signal, exports to analog switch.The present invention is simple in construction, easy to operate, and the power of consumption itself is small, and operating cost is low, can be used under various complicated.
Description
Technical field
The present invention relates to a kind of CO2 high pressure receiving control devices for high power laser, suitable for being cut by laser
The fields such as machine.
Background technology
High-power CO2 lasers are a kind of complex industrial equipments, the power supply not only with high voltage, high current with
And the vacuum cavity of multi-sealing surface and it is necessary to the dynamic stability of working gas composition, air pressure is kept, while in the process of running
Producing substantial amounts of heat needs to be cooled down, also more sensitive to temperature change.
It is all by the way of light-coupled isolation, after converting optical signals to electric signal that existing laser, which receives control circuit,
The amplification of data signal is carried out again, can cause poor anti jamming capability, it is impossible to gives the voltage electricity of high-power CO2 laser stabilizations
Stream, influence the normal table work of laser.
Currently in order to improve the power of CO2 laser machines, it is necessary to receive signal using high-tension, so laser receives control
Circuit processed must improve the ability of control panel output HIGH voltage.
The content of the invention
It can convert optical signals to electric signal and stably carry out power amplification to connect it is an object of the present invention to provide a kind of
Receive control device.
The used to achieve the above object technical scheme of the present invention is：High pressure for high-power co2 laser receives
Control device, including permanent rate power supply, fiber optic receiver, DAC digital analog converters, analog switch, the operational amplifier being linked in sequence
Module and power amplifier；The permanent rate power supply is used to external communication electricity being converted into direct current, is fiber optic receiver, DAC numbers
Weighted-voltage D/A converter, analog switch, operational amplifier module and power amplifier power supply；The fiber optic receiver is used to receive exterior light
Optical fiber signaling, and be converted to data signal and deliver to digital analog converter；The digital analog converter is used for the data signal of serial input
Analog current output signal is converted into, is exported to analog switch.
The fiber optic receiver is three or more, and the control terminal of two of which fiber optic receiver and analog switch connects,
Other fiber optic receivers are connected with DAC digital analog converters.
The power amplifier includes FET and operational amplifier；What the drain D of FET was connected by two
Diode D3, D4 are connected to ground, and source S is connected to ground by resistance R31, the parallel connection that grid G passes through electric capacity C20 and resistance R30
The parallel circuit with electric capacity C19 and resistance R29 compositions, the output end of operational amplifier are connected circuit respectively, electric capacity C19 and electricity
The parallel circuit other end for hindering R29 compositions connects through the source S of resistance R27 and FET, also anti-phase with operational amplifier
Input is connected；The normal phase input end of operational amplifier and the output end of analog switch connect；The cathode output end of permanent rate power supply
As a pair of output after connection resistance R70, with drain D, it is connected for the input with laser.
The invention has the advantages that and advantage：
1. input of the present invention uses fiber optic receiver, cost, strong antijamming capability are reduced.
2. employing analog switch, the switching between analog signal is conveniently realized.
3. employing Discrete control, Qian Silu and the power amplification electricity on rear four tunnel can be controlled respectively by short circuit cap
Road.
4. the present invention is simple in construction, easy to operate, the power of consumption itself is small, and operating cost is low, can be in Various Complex ring
Used under border.
5. low cost of the invention, strong antijamming capability；Conveniently realize the switching between analog signal；It is convenient to realize segmentation
Control.
Brief description of the drawings
Fig. 1 is circuit structure block diagram of the present invention；
Fig. 2 is fiber optic receiver receiving circuit schematic diagram；
Fig. 3 is that fiber optic receiver is connected circuit diagram with digital analog converter；
Fig. 4 is power amplifier circuit figure.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail.
As shown in figure 1, what the structure design of the present invention was realized in：Receiving control panel includes：Permanent rate power supply, optical fiber connect
Receive device, DAC digital analog converters, analog switch, operational amplifier module, power amplifier.Its connection is：Permanent rate power supply and each device
Part, which is connected, is connected in each device offer direct current；Fiber optic receiver is connected with DAC digital analog converters and analogue quantity switch respectively；
The output end of DAC digital analog converters is connected with analog switch；Analog switch is connected with the input of operational amplifier；Computing
The output end of amplifier is connected with power amplifier.
Permanent rate power supply has rectification, filter circuit, power supply stabilization circuit, exchange 115V electricity is converted into direct current, is it
His functional module offer+5V ,+15V, -15V dc source.
Fiber optic receiver is multiple, for receiving optical fiber and digital signal, one of control letter that analogue quantity switch is provided
Number, other are used to provide the clock of DAC digital analog converters, uploaded, serial input signals；；
DAC digital analog converters use MAX543 chips, defeated for the data signal of serial input to be converted into analog current
Go out signal；MAX543 serial input terminals SRI, clock signal terminal CLK, end LOAD signal is uploaded respectively from fiber optic receiver
Data signal；MAX543 RFB ends are connected with operational amplifier while are connected by resistance with analog switch, Iout ends and computing
Amplifier in connects.
Analog switch completes the signal handoff functionality in signal link, using MC14066；Its input and digital-to-analogue conversion
The RFB ends of device are connected by resistance；4 pin of two control terminals respectively with two fiber optic receivers are connected.Output end passes through resistance
It is connected with the reverse input end of one-level operational amplifier.
Operational amplifier module is used for amplified signal, exports to power amplifier module；Using two level LM741, its one
The positive input end grounding of level operational amplifier, inverting input and MAX543 output end Iout connections；Output end with
MAX543 RFB ends are connected, while are connected by resistance with two-level operating amplifier LM741 inverting input；Two level is transported
Calculate amplifier and equally use LM741, its normal phase input end is connected to ground by resistance, and inverting input is with one-level LM741's
Output end connects.
Power amplifier：It is made up of FET IRF330 and operational amplifier LM741, high-power letter is provided for output end
Number.
As shown in drawings, Fig. 2 Fig. 3 is fiber-optic signal receiving circuit, the principle of DAC digital analog converters to its circuit detailed construction
Figure.Fiber optic receiver uses multiple R-2521 optical fibers, by 0.01 μ F capacitance connection between R-2521 2 pin and 3 pin,
2 pins are grounded；Part R-2521 1 pin is connected composition data signals with 4 pin, and being connected to DAC digital-to-analogues according to different demands turns
The serial input of parallel operation, clock and end is uploaded, the other end of fiber optic receiver can be connected with host computer or CPU；Two optical fiber connect
4 pin for receiving device access the control terminal of analog switch.
U20 data ends connection MAX543's uploads end (load), U21 data ends connection MAX543 serial input terminal
(SRI), U23 connections MAX543 clock signal terminal (CLK).
Fig. 4 is power amplification circuit, FET IRF330 and operational amplifier LM741 compositions；IRF330 drain D is led to
Two diodes D3, D4 are crossed to be connected to the ground；Source S is connected to the ground by resistance R31；Grid G and electric capacity C20 and resistance
What the other end of R30 parallel-connection structure connection, electric capacity C20 and resistance R30 parallel-connection structure formed with electric capacity C19 and resistance R29
Parallel-connection structure connects, while is connected with operational amplifier LM741 output end.Electric capacity C19 and resistance R29 composition and be coupled
The other end of structure is connected with resistance R27, while is connected with the inverting input of operational amplifier；The resistance R27 other end and source
Level S-phase connection；Drain D is an output end of whole control panel；Resistance R70 connection -15V power supplys export as another simultaneously
End, common output to laser.
Claims (3)
1. it is used for high power CO2The high pressure receiving control device of laser, it is characterised in that：Including be linked in sequence permanent rate power supply,
Fiber optic receiver, DAC digital analog converters, analog switch, operational amplifier module and power amplifier；The permanent rate power supply is used for
External communication electricity is converted into direct current, be fiber optic receiver, DAC digital analog converters, analog switch, operational amplifier module and
Power amplifier is powered；The fiber optic receiver is used to receive external fiber signal, and is converted to data signal and delivers to digital-to-analogue turn
Parallel operation；The digital analog converter is used to the data signal of serial input being converted into analog current output signal, output to simulation
Switch.
2. according to claim 1 be used for high power CO2The high pressure receiving control device of laser, it is characterised in that：It is described
Fiber optic receiver is three or more, and the control terminal of two of which fiber optic receiver and analog switch connects, and other optical fiber connect
Device is received to be connected with DAC digital analog converters.
3. according to claim 1 be used for high power CO2The high pressure receiving control device of laser, it is characterised in that：It is described
Power amplifier includes FET and operational amplifier；The drain D of FET by two series connection diode D3, D4 with
Ground is connected, and source S is connected to ground by resistance R31, grid G by electric capacity C20 and resistance R30 parallel circuit respectively with electric capacity
Parallel circuit that C19 forms with resistance R29, the output end of operational amplifier are connected, electric capacity C19 and resistance R29 compositions and
Join the circuit other end to connect through the source S of resistance R27 and FET, be also connected with the inverting input of operational amplifier；Fortune
The output end of the normal phase input end and analog switch of calculating amplifier connects；After the cathode output end connection resistance R70 of permanent rate power supply,
With drain D as a pair of output, it is connected for the input with laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574030.9A CN104638500B (en) | 2013-11-13 | 2013-11-13 | For high power CO2The high pressure receiving control device of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574030.9A CN104638500B (en) | 2013-11-13 | 2013-11-13 | For high power CO2The high pressure receiving control device of laser |
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| Publication Number | Publication Date |
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| CN104638500A CN104638500A (en) | 2015-05-20 |
| CN104638500B true CN104638500B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310574030.9A Active CN104638500B (en) | 2013-11-13 | 2013-11-13 | For high power CO2The high pressure receiving control device of laser |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001950B (en) * | 2016-07-21 | 2018-06-19 | 成都福誉科技有限公司 | For the power control system and laser cutting device of industrial lasers cutter device |
| CN106953632A (en) * | 2017-03-20 | 2017-07-14 | 太原工业学院 | A kind of many level adaptive circuits of code device signal optical fiber long-distance transmissions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202309628U (en) * | 2011-09-29 | 2012-07-04 | 广东电网公司电力科学研究院 | Digital isolating high-voltage direct-current power amplifying module and power amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002033671A (en) * | 2000-07-19 | 2002-01-31 | Kenwood Corp | Transmission power control system |
| JP2003037454A (en) * | 2001-07-23 | 2003-02-07 | Hitachi Ltd | High-frequency power amplifier circuit |
| JP2009231598A (en) * | 2008-03-24 | 2009-10-08 | Olympus Corp | Pulsed light source apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202309628U (en) * | 2011-09-29 | 2012-07-04 | 广东电网公司电力科学研究院 | Digital isolating high-voltage direct-current power amplifying module and power amplifier |
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| CN104638500A (en) | 2015-05-20 |
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