CN103378545A - Laser controller, laser control system and laser control method - Google Patents
Laser controller, laser control system and laser control method Download PDFInfo
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- CN103378545A CN103378545A CN 201210123670 CN201210123670A CN103378545A CN 103378545 A CN103378545 A CN 103378545A CN 201210123670 CN201210123670 CN 201210123670 CN 201210123670 A CN201210123670 A CN 201210123670A CN 103378545 A CN103378545 A CN 103378545A
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Abstract
The invention discloses a laser controller, a laser control system and a laser control method, and belongs to the field of lasers. The laser controller comprises an emitter follower, a standard voltage stabilization source and a constant current control circuit, wherein the emitter follower is used for receiving a modulation control signal and outputting the modulation control signal after the modulation control signal is amplified, the modulation control signal is an analog control signal or a PWM control signal, the standard voltage stabilization source is used for providing voltage for the emitter follower, and the constant current control circuit is used for outputting a driving current according to the modulation control signal output by the emitter follower so as to control the working states of a laser diode. The laser control system comprises the laser controller, a computer control system and the laser diode. According to the laser controller, the laser control system and the laser control method, the control over the laser diode is achieved, an existing manual switchover switch is replaced, the automatic control effect is achieved, manual operation of a user does not need, the complexity is reduced, and the use feeling of the user is greatly improved.
Description
Technical field
The present invention relates to laser field, particularly the method for a kind of laser controller, laser control system and laser controlling.
Background technology
In recent years, the laser demonstration system had been used widely aspect light of stage layout, public place of entertainment and the outdoor demonstration.The laser demonstration system utilizes laser diode as light emitting source, depicts various effects by the design of special optowire and accurate control system and high-velocity scanning galvanometer, comprises vector graphics, animation, picture and literal etc.
The laser demonstration system mainly comprises: computer control system, laser controller, laser and high-velocity scanning galvanometer.Wherein, computer control system is used for presentation information is processed, and presentation information is converted into satisfactory control signal; Laser controller is controlled laser according to different types of control signal; Laser is the vitals of laser demonstration system, is used for launching different laser to the high-velocity scanning galvanometer according to different signals; The high-velocity scanning galvanometer is used for the light path of control laser.Laser is fallen the suitable position of screen through the high-velocity scanning vibration mirror reflected, forms the perfect picture of a width of cloth width of cloth.
Existing laser controller generally includes: analog signal control circuit, PWM (Pulse Width Modulation, pulse width modulation) signal control circuit, change over switch and constant-current control circuit.Fig. 1 is the schematic diagram of laser controller in the prior art.As shown in Figure 1, analog signal control circuit wherein is used for the analog control signal of receiving computer control system output, and the pwm signal control circuit is used for the pwm control signal of receiving computer control system output; Change over switch wherein is manual change over switch, manually operated as required by operating personnel, select analog control signal or pwm control signal, this analog control signal or pwm control signal are exported to laser after constant-current control circuit is processed, thereby realize the control to laser.
After the prior art analysis, the inventor finds: this control mode needs artificial manually switching, and it is not quite convenient to use, and structure is comparatively complicated, is unfavorable for user's use impression.
Summary of the invention
In order to solve the problem of the necessary Manual Transfer Switch of existing laser controller, the embodiment of the invention provides the method for a kind of laser controller, laser control system and laser controlling.Described technical scheme is as follows:
A kind of laser controller, described laser controller comprises:
Emitter follower is used for receiving modulator control signal, and described modulator control signal is amplified rear output, and described modulator control signal is analog control signal or pulse width modulation (PWM) control signal;
Reference voltage stabilizing source is used for providing voltage to described emitter follower;
Constant-current control circuit is used for the modulator control signal output driving current according to described emitter follower output, with the operating state of control laser diode;
Wherein, described reference voltage stabilizing source links to each other with described emitter follower, and the output of described emitter follower links to each other with the input of described constant-current control circuit, and the output of described constant-current control circuit links to each other with the input of described laser diode.
Wherein, described laser controller also comprises:
The distortion suppression unit, the modulator control signal that is used for the output of receiving computer control system, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
The input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
A kind of laser control system, described system comprises above-mentioned laser controller, computer control system and laser diode;
Described computer control system is used for according to default rule output modulator control signal to described laser controller;
Described laser controller is used for the operating state according to the modulator control signal control laser diode of described computer control system output;
Described laser diode, the drive current of exporting according to described laser controller reaches different operating states, and the laser of different operating state forms display frame by the high-velocity scanning galvanometer;
The output of described computer control system links to each other with the input of described laser controller, and the output of described laser controller links to each other with the input of described laser diode.
Wherein, described laser controller also comprises:
The distortion suppression unit, be used for receiving the modulator control signal of described computer control system output, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
The input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
A kind of method of laser controlling, described method comprises:
Described emitter follower receives modulator control signal, and described modulator control signal is amplified, and described modulator control signal is analog control signal or pulse width modulation (PWM) control signal;
Described constant-current control circuit is used for the modulator control signal output driving current according to described emitter follower output, with the operating state of control laser diode.
Wherein, described emitter follower receives before the modulator control signal, also comprises:
The modulator control signal of distortion suppression unit receiving computer control system output, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
Wherein, the input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:
By emitter follower analog control signal or pwm control signal are amplified, again through the constant-current control circuit output driving current, the operating state of control laser diode, realized the control to laser diode, and replaced existing Manual Transfer Switch, and reached the effect of automatic control, need not user's manual operation, reduce complexity, greatly improved user's use impression.Further, by the distortion suppression unit analog control signal is carried out distortion suppression, can further improve the accuracy of modulator control signal transmission, improve the control effect to laser diode.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of laser controller in the prior art;
Fig. 2 is a kind of laser controller schematic diagram that the embodiment of the invention 1 provides;
Fig. 3 is the another kind of laser controller schematic diagram that the embodiment of the invention 1 provides;
Fig. 4 is a kind of laser control system schematic diagram that the embodiment of the invention 2 provides;
Fig. 5 is the method flow diagram of a kind of laser controlling of providing of the embodiment of the invention 3.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 2, present embodiment provides a kind of laser controller, comprising:
Reference voltage stabilizing source 102 is used for providing voltage to emitter follower 101;
Constant-current control circuit 103 is used for the modulator control signal output driving current according to emitter follower 101 outputs, with the operating state of control laser diode;
The effect of constant-current control circuit is that if do not add modulator control signal, then this constant-current control circuit keeps current constant, so that laser diode keeps conducting state, does not reach the purpose of laser performance; When applying modulator control signal and being applied to the scenes such as laser performance, constant-current control circuit can change according to the state of modulator control signal the operating state of laser diode, to reach the purpose of laser performance.For example, when the pwm control signal that applies was in high level, laser diode was luminous, and when pwm control signal was in low level, laser diode was not luminous.But because the pwm frequency signal that applies is higher, so human eye can't see the state that laser diode shows when not luminous, see just beam intensity ratio is luminous the time light intensity slightly weak; When apply be analog control signal the time, the laser diode luminous intensity changes along with the variation of the level amplitude of analog control signal.
Wherein, reference voltage stabilizing source 102 links to each other with emitter follower 101, and the output of emitter follower 101 links to each other with the input of constant-current control circuit 103, and the output of constant-current control circuit 103 links to each other with the input of laser diode.
In the present embodiment, emitter follower 102 also can be called emitter follower, is a kind of Voltage Series Negative Feedback Amplifier.Usually, emitter-base bandgap grading limit with the voltage amplification factor of device close to 1, the ability of voltage amplification a little less than, but emitter follower can obtain very large output current with very little input current, has therefore that electric current amplifies and the effect of power amplification.Based on the degenerative effect of circuit depth, the outstanding advantages such as emitter follower has working stability, frequency response is wide, input impedance is high and output impedance is low.
Further, referring to Fig. 3, in order to suppress the analog control signal distortion of emitter follower input, above-mentioned laser controller can also comprise:
Wherein, the input of distortion suppression unit 104 links to each other with the output of computer control system, and the output of distortion suppression unit 104 links to each other with the input of emitter follower 101.
In the present embodiment, distortion refers to that signal compares the deviation that occurs with original signal or standard in transmission course.In desirable amplifier, output waveform should be identical with the input waveform except amplifying, but in fact, can not accomplish that the waveform of exporting with inputting is just the same, and this phenomenon claims again distortion distortion.The Main Function of distortion suppression unit 104 is that the distortion to analog control signal suppresses, and to reduce the waveform loss of analog control signal as far as possible, guarantees the accuracy of signal transmission.When modulator control signal was pwm control signal, 104 pairs of these pwm control signals in distortion suppression unit were left intact, and directly export to emitter follower 101.Wherein, distortion suppression unit 104 can adopt multiple circuit to realize that as forming distortion suppression unit etc. by resonant tank and current rectifying and wave filtering circuit, the present invention does not do restriction to concrete the electric circuit constitute.
The laser controller that present embodiment provides, by emitter follower analog control signal or pwm control signal are amplified, again through the constant-current control circuit output driving current, the operating state of control laser diode has realized the control to laser diode, and has replaced existing Manual Transfer Switch, reached the effect of automatic control, need not user's manual operation, reduced complexity, greatly improved user's use impression.Further, by the distortion suppression unit analog control signal is carried out distortion suppression, can further improve the accuracy of modulator control signal transmission, improve the control effect to laser diode.
Embodiment 2
Referring to Fig. 4, present embodiment provides a kind of laser control system, comprising: laser controller 201, computer control system 202 and laser diode 203;
Wherein, laser controller 201 comprises:
Emitter follower is used for receiving modulator control signal, and modulator control signal is amplified rear output, and modulator control signal is analog control signal or pulse width modulation (PWM) control signal;
Reference voltage stabilizing source is used for providing voltage to emitter follower;
Constant-current control circuit is used for the modulator control signal State-output drive current according to described emitter follower output, with the operating state of control laser diode;
Described reference voltage stabilizing source links to each other with emitter follower, and the output of emitter follower links to each other with the input of constant-current control circuit, and the output of constant-current control circuit links to each other with the input of laser diode;
Wherein, the output of computer control system 202 links to each other with the input of laser controller 201, and the output of laser controller 201 links to each other with the input of laser diode 203; The input of laser controller 201 is the input of emitter follower, and the output of laser controller 201 is the output of constant-current control circuit.
In the present embodiment, described default rule is used for the output of control modulator control signal, and computer control system 202 can correspondingly be exported analog control signal or pwm control signal according to this rule.Described rule can arrange as required, and the present invention does not limit this, includes but not limited to: at fixing very first time section output analog control signal, at fixing the second time period output pwm control signal; Perhaps, alternately export analog control signal and pwm control signal etc. according to the fixing cycle.
In the present embodiment, further, laser controller 201 can also comprise:
The distortion suppression unit, the modulator control signal that is used for 202 outputs of receiving computer control system, if this modulator control signal is analog control signal, then this analog control signal is carried out exporting to described emitter follower after the distortion suppression, if this modulator control signal is pwm control signal, then directly export this pwm control signal to described emitter follower;
Wherein, the input of distortion suppression unit links to each other with the output of computer control system 202, the output of distortion suppression unit links to each other with the input of emitter follower, under this scene, the input of laser controller 201 is the input of distortion suppression unit, and the output of laser controller 201 is the output of constant-current control circuit.
The laser control system that present embodiment provides, by laser controller to analog control signal or pwm control signal amplifies and through the constant-current control circuit output driving current, the operating state of control laser diode, realized the control to laser diode, and replaced existing Manual Transfer Switch, and reached the effect of automatic control, need not user's manual operation, reduce complexity, greatly improved user's use impression.Further, laser controller carries out distortion suppression by the distortion suppression unit to analog control signal, can further improve the accuracy of modulator control signal transmission, improves the control effect to laser diode.
Embodiment 3
Referring to Fig. 5, present embodiment provides a kind of laser controller that provides based on above-described embodiment to carry out the method for laser controlling, comprising:
Step 301: emitter follower receives modulator control signal, and this modulator control signal is amplified, and wherein, this modulator control signal is analog control signal or pwm control signal;
Step 302: constant-current control circuit is according to the modulator control signal State-output drive current of described emitter follower output, with the operating state of control laser diode.
Described method is carried out by laser controller, and the function of described laser controller is identical with the description in above-described embodiment, does not give unnecessary details herein.
In the present embodiment, further, in order to suppress the analog control signal distortion of emitter follower input, laser controller can also comprise the distortion suppression unit, and is correspondingly described before emitter follower receives modulator control signal, can also comprise:
The modulator control signal of distortion suppression unit receiving computer control system output, if this modulator control signal is analog control signal, then this analog control signal is carried out exporting to emitter follower after the distortion suppression, if this modulator control signal is pwm control signal, then directly export pwm control signal to emitter follower;
Wherein, the input of distortion suppression unit links to each other with the output of computer control system, and the output of distortion suppression unit links to each other with the input of emitter follower, and the function of described distortion suppression unit is identical with the description in above-described embodiment, does not give unnecessary details herein.
The method of the laser controlling that present embodiment provides, by emitter follower analog control signal or pwm control signal are amplified, again through the constant-current control circuit output driving current, the operating state of control laser diode has realized the control to laser diode, and has replaced existing Manual Transfer Switch, reached the effect of automatic control, need not user's manual operation, reduced complexity, greatly improved user's use impression.Further, by the distortion suppression unit analog control signal is carried out distortion suppression, can further improve the accuracy of modulator control signal transmission, improve the control effect to laser diode.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a laser controller is characterized in that, described laser controller comprises:
Emitter follower is used for receiving modulator control signal, and described modulator control signal is amplified rear output, and described modulator control signal is analog control signal or pulse width modulation (PWM) control signal;
Reference voltage stabilizing source is used for providing voltage to described emitter follower;
Constant-current control circuit is used for the modulator control signal output driving current according to described emitter follower output, with the operating state of control laser diode;
Wherein, described reference voltage stabilizing source links to each other with described emitter follower, and the output of described emitter follower links to each other with the input of described constant-current control circuit, and the output of described constant-current control circuit links to each other with the input of described laser diode.
2. laser controller according to claim 1 is characterized in that, described laser controller also comprises:
The distortion suppression unit, the modulator control signal that is used for the output of receiving computer control system, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
The input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
3. a laser control system is characterized in that, described system comprises laser controller as claimed in claim 1, computer control system and laser diode;
Described computer control system is used for according to default rule output modulator control signal to described laser controller;
Described laser controller is used for the operating state according to the modulator control signal control laser diode of described computer control system output;
Described laser diode, the drive current of exporting according to described laser controller reaches different operating states, and the laser of different operating state forms display frame by the high-velocity scanning galvanometer;
The output of described computer control system links to each other with the input of described laser controller, and the output of described laser controller links to each other with the input of described laser diode.
4. system according to claim 3 is characterized in that, described laser controller also comprises:
The distortion suppression unit, be used for receiving the modulator control signal of described computer control system output, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
The input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
5. a method of utilizing laser controller as claimed in claim 1 to carry out laser controlling is characterized in that, described method comprises:
Described emitter follower receives modulator control signal, and described modulator control signal is amplified, and described modulator control signal is analog control signal or pulse width modulation (PWM) control signal;
Described constant-current control circuit is used for the modulator control signal output driving current according to described emitter follower output, with the operating state of control laser diode.
6. method according to claim 5 is characterized in that, described emitter follower receives before the modulator control signal, also comprises:
The modulator control signal of distortion suppression unit receiving computer control system output, if described modulator control signal is analog control signal, then described analog control signal is carried out exporting to described emitter follower after the distortion suppression, if described modulator control signal is pwm control signal, then directly the described pwm control signal of output is given described emitter follower;
Wherein, the input of described distortion suppression unit links to each other with the output of described computer control system, and the output of described distortion suppression unit links to each other with the input of described emitter follower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210123670 CN103378545A (en) | 2012-04-24 | 2012-04-24 | Laser controller, laser control system and laser control method |
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| CN 201210123670 CN103378545A (en) | 2012-04-24 | 2012-04-24 | Laser controller, laser control system and laser control method |
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| CN103378545A true CN103378545A (en) | 2013-10-30 |
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| CN 201210123670 Pending CN103378545A (en) | 2012-04-24 | 2012-04-24 | Laser controller, laser control system and laser control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730831A (en) * | 2013-12-20 | 2014-04-16 | 重庆南方数控设备有限责任公司 | Constant power laser output control system and method |
| CN104360642A (en) * | 2014-11-17 | 2015-02-18 | 深圳市大族激光科技股份有限公司 | Laser cutting machine numerical control system |
-
2012
- 2012-04-24 CN CN 201210123670 patent/CN103378545A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730831A (en) * | 2013-12-20 | 2014-04-16 | 重庆南方数控设备有限责任公司 | Constant power laser output control system and method |
| CN104360642A (en) * | 2014-11-17 | 2015-02-18 | 深圳市大族激光科技股份有限公司 | Laser cutting machine numerical control system |
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Application publication date: 20131030 |