CN105790065A - Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system - Google Patents
Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system Download PDFInfo
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- CN105790065A CN105790065A CN201610131030.5A CN201610131030A CN105790065A CN 105790065 A CN105790065 A CN 105790065A CN 201610131030 A CN201610131030 A CN 201610131030A CN 105790065 A CN105790065 A CN 105790065A
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- control
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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
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0427—Electrical excitation ; Circuits therefor for applying modulation to the laser
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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
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
- H01S5/02415—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling by using a thermo-electric cooler [TEC], e.g. Peltier element
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
A multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control comprises a singlechip microcomputer control system, a semiconductor refrigerating system, a current driving system, a wireless module, an upper computer system and a touch control color liquid crystal display screen, wherein the current driving system is connected with the singlechip microcomputer control system through digital-to-analogue conversion, the singlechip microcomputer control system is used for controlling the semiconductor refrigerating system to control the temperature of an external LD, the singlechip microcomputer control system is in communication with the upper computer system through the wireless module, the singlechip microcomputer control system is connected with the touch control color liquid crystal display screen, the current driving system comprises a plurality of current driving units in parallel, and the plurality of current driving units are connected with the external LD. The system is applicable to a severe environment which is not suitably operated in site, the size of the driving current and the driving mode can be controlled by a user through the touch control color liquid crystal display screen and the upper computer system, and meanwhile, the temperature of the LD also can be monitored in real time and accurately controlled.
Description
Technical field
The present invention relates to a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation and method of work thereof, belong to the technical field of laser driver.
Background technology
Solid state laser has the plurality of advantages such as volume is little, easy to use, output is big, has broad application prospects in fields such as military, medical treatment and precise materials analyses.And LD drives power supply that the laser property impact of output is very big, current LD drives power supply to be primarily present problems with:
At present, most LD drives power supply to be single continuous or small area analysis impulse type, it is impossible to carry out continuously and the switching of pulse mode, when some specific applications needing both of which to switch, it is necessary to change and drive power supply, bring the inconvenience of use.
At present, most LD drives power supply to design according to specific loading demand.When the load is varied, LD drives the parameter of power supply to be required for redesigning, so adaptive capacity is poor.
Current LD drives power supply to be nowhere near in remotely controlling and be intelligent, and maximum drive current is fixed, can not real-time monitoring, the temperature of internal semiconductor refrigeration system is fixed, and can not show in real time and control.Need the occasion of remotely control that adjustment is made troubles at some for security consideration.
Current LD drives power supply mostly to be single load control, once can only control a semiconductor laser, needs the occasion of multichannel LD then to need multiple LD to drive power supply at some so that whole system is not succinctly light.
Summary of the invention
For the deficiencies in the prior art, the present invention provide a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation.The defects such as power drives pattern is single, adaptive load ability, intelligent and remote control and regulation is poor, load control unicity that it is an object of the invention to overcome existing LD to drive.
The present invention also provides for the multi-wavelength tunable LD of a kind of said system regulation and control method driving power supply.
Technical scheme is as follows:
A kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, including single-chip computer control system, semiconductor refrigeration system, current drive system, wireless module, master system, touch-control color LCD screen；
Described current drive system is connected with described single-chip computer control system by digital-to-analogue conversion；
Described single-chip computer control system controls semiconductor refrigeration system and external LD is carried out temperature control；
Described single-chip computer control system is communicated by wireless module and described master system；
Described single-chip computer control system is connected with described touch-control color LCD screen；
Described current drive system includes the current driver unit of multiple parallel connection, is connected with external LD respectively.
According to currently preferred, the model of described current driver unit is the LT3743 chip of Linear Tech.Pin for Controlled in Current Mode and Based mainly has three, L, H, SEL, and wherein SEL pin is by discrete control, is directly carried out the control of high low state by the I/O mouth of single-chip computer control system；L and H pin then needs simulation amount to control, and control voltage range is 0-1.5V, analog-digital chip the digital quantity of single-chip computer control system I/O mouth is converted to analog quantity, LT3743 chip is controlled.Its control model is as follows: the mode of operation of SEL pin control chip, pin level sets low, current drive system is in continuous operation mode, and now, most High Output Current is by the Automatic level control of H pin, when the control voltage of H pin is changed by 0-1.5V, maximum drive current is changed by 0-25A, after maximum drive current value is selected, drives the change of electric current by the Control of Voltage of L pin, when L pin voltage is changed by 0-1.5V, electric current is driven to change between 0A to maximum；The input of SEL pin is the square-wave signal of certain frequency, is set low by L pin, then system is in pulse working mode, and pulse current peak is determined by the voltage of H pin, and when its voltage is changed by 0-1.5V, maximum current is changed by 0-25A.
The LD of multichannel different wave length can be driven by system of the present invention simultaneously, and the drive pattern of every road LD can freely switch to continuous mode and pulse mode.Semiconductor refrigeration system is for accurately controlling the temperature of LD, it is ensured that its steady operation, adopts the pid algorithm of prior art, temperature fluctuation is controlled at 0.1 DEG C.System achieves the long-range control of device by wireless module system and master system, and being adaptable to should not with the adverse circumstances of execute-in-place.The size and drive pattern that drive electric current can be controlled by user by touch-control color LCD screen and master system, the temperature of LD also can carry out monitor in real time simultaneously and accurately control.
According to currently preferred, described semiconductor refrigeration system includes TEC and drives control circuit and digital temperature sensor Acquisition Circuit.
According to currently preferred, described TEC drives the acp chip of control circuit to be L298N chip.By four chip parallel drive electric currents up to 15A.
According to currently preferred, described wireless module is Wi-Fi module, and described master system is PC computer or smart mobile phone.
The method that the multi-wavelength tunable LD of a kind of said system regulation and control drives power supply, comprises the following steps that
1) drive pattern of LD is selected by master system and touch-control color LCD screen, LD operating temperature is set: the drive pattern of described LD includes continuous mode and pulse mode；
2) described single-chip computer control system receives the drive pattern of the LD set, and performs the described drive pattern setting LD respectively according to corresponding current driver unit；Described single-chip computer control system receives the LD operating temperature set, monitor the temperature of LD in real time, the LD operating temperature of the temperature Yu setting of monitoring LD in real time is carried out pid algorithm analysis and obtains current controlled quentity controlled variable by single-chip computer control system, again by described current controlled quentity controlled variable to be loaded in the way of PWM in TEC driving control circuit, control the temperature of TEC；Reach the purpose of temperature precision control；
3) when the temperature of described real-time monitoring LD is more than the LD operating temperature set, described single-chip computer control system controls semiconductor refrigeration system work, namely described LD is carried out water-cooled cooling, until the temperature monitoring LD in real time is consistent with the LD operating temperature of setting.System is carried out temperature setting by user according to demand, Current Temperatures and design temperature are carried out pid algorithm analysis and obtain current controlled quentity controlled variable by single-chip computer control system, again by controlled quentity controlled variable to be loaded in TEC driving control circuit in the way of PWM, control the temperature of TEC, reach the purpose of temperature precision control.
Described quasiconductor current drive system connects with single-chip computer control system, is used for producing LD and drives electric current, drives electric current output including 10 roads.User according to demand by touch-control color LCD screen and master system strobe pulse mode of operation or continuous operation mode, can set and drive electric current, and driving current-mode and size of current to each road are controlled.Described touch-control color LCD screen connects with single-chip computer control system.The human-computer interaction interface pattern to show current each road and drives and current value are provided, receive user to each road driving current settings；The temperature value of display semiconductor laser, the temperature receiving user sets.Described wireless module connects with master system and single-chip computer control system.Described master system checks duty and to semiconductor refrigeration system and carry out remote control and regulation for system.
The invention have the benefit that
1) LD drives power supply can be carried out the switching of continuous output mode and pulsed output mode by touch-control color LCD screen and master system, is very suitable for needing the occasion of two kinds of drive patterns of application.
2) touch-control color LCD screen can be passed through and master system sets the maximum drive current value that each road electric current drives, improve for unequally loaded adaptive capacity.
3) duty of wireless network remote monitoring temperature control system and current drive system can be passed through, it is adaptable to the adverse circumstances of various unsuitable execute-in-places.
4) system integration five road electric current drives, and can control 10 road LD simultaneously, is very suitable for the occasion needing to control multichannel LD.
Accompanying drawing explanation
Fig. 1 be the present invention can the tunable multi-wavelength LD drive system block diagram of remote control and regulation；
Fig. 2 is the semiconductor refrigeration system control flow chart of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described, but is not limited to this.
As shown in Figure 1, 2.
Embodiment 1,
A kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, including single-chip computer control system, semiconductor refrigeration system, current drive system, wireless module, master system, touch-control color LCD screen；
Described current drive system is connected with described single-chip computer control system by digital-to-analogue conversion；
Described single-chip computer control system controls semiconductor refrigeration system and external LD is carried out temperature control；
Described single-chip computer control system is communicated by wireless module and described master system；
Described single-chip computer control system is connected with described touch-control color LCD screen；
Described current drive system includes the current driver unit of multiple parallel connection, is connected with external LD respectively.
Embodiment 2,
As described in Example 1 a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is distinctive in that, the model of described current driver unit is the LT3743 chip of Linear Tech.
Embodiment 3,
As described in Example 1 a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is distinctive in that, described semiconductor refrigeration system includes TEC and drives control circuit and digital temperature sensor Acquisition Circuit.
Embodiment 4,
As described in Example 3 a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is distinctive in that, described TEC drives the acp chip of control circuit to be L298N chip.
Embodiment 5,
As described in Example 1 a kind of can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is distinctive in that, described wireless module is Wi-Fi module, and described master system is PC computer or smart mobile phone.
Embodiment 6,
A kind of method that multi-wavelength tunable LD of system regulation as described in embodiment 1-5 drives power supply, comprises the following steps that
1) drive pattern of LD is selected by master system and touch-control color LCD screen, LD operating temperature is set: the drive pattern of described LD includes continuous mode and pulse mode；
2) described single-chip computer control system receives the drive pattern of the LD set, and performs the described drive pattern setting LD respectively according to corresponding current driver unit；Described single-chip computer control system receives the LD operating temperature set, monitor the temperature of LD in real time, the LD operating temperature of the temperature Yu setting of monitoring LD in real time is carried out pid algorithm analysis and obtains current controlled quentity controlled variable by single-chip computer control system, again by described current controlled quentity controlled variable to be loaded in the way of PWM in TEC driving control circuit, control the temperature of TEC；
3) when the temperature of described real-time monitoring LD is more than the LD operating temperature set, described single-chip computer control system controls semiconductor refrigeration system work, namely described LD is carried out water-cooled cooling, until the temperature monitoring LD in real time is consistent with the LD operating temperature of setting.
Claims (6)
1. one kind can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is characterised in that this system includes single-chip computer control system, semiconductor refrigeration system, current drive system, wireless module, master system, touch-control color LCD screen；
Described current drive system is connected with described single-chip computer control system by digital-to-analogue conversion；
Described single-chip computer control system controls semiconductor refrigeration system and external LD is carried out temperature control；
Described single-chip computer control system is communicated by wireless module and described master system；
Described single-chip computer control system is connected with described touch-control color LCD screen；
Described current drive system includes the current driver unit of multiple parallel connection, is connected with external LD respectively.
2. a kind of as claimed in claim 1 can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is characterised in that the model of described current driver unit is the LT3743 chip of Linear Tech.
3. a kind of as claimed in claim 1 can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is characterised in that described semiconductor refrigeration system includes TEC and drives control circuit and digital temperature sensor Acquisition Circuit.
4. a kind of as claimed in claim 3 can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is characterised in that described TEC drives the acp chip of control circuit to be L298N chip.
5. a kind of as claimed in claim 1 can the multi-wavelength tunable LD driving power source system of remote control and regulation, it is characterised in that described wireless module is Wi-Fi module, and described master system is PC computer or smart mobile phone.
6. one kind utilizes the method driving power supply of the multi-wavelength tunable LD of system regulation as described in claim 1-5 any one, it is characterised in that it is as follows that the method comprising the steps of:
1) drive pattern of LD is selected by master system and touch-control color LCD screen, LD operating temperature is set: the drive pattern of described LD includes continuous mode and pulse mode；
2) described single-chip computer control system receives the drive pattern of the LD set, and performs the described drive pattern setting LD respectively according to corresponding current driver unit；Described single-chip computer control system receives the LD operating temperature set, monitor the temperature of LD in real time, the LD operating temperature of the temperature Yu setting of monitoring LD in real time is carried out pid algorithm analysis and obtains current controlled quentity controlled variable by single-chip computer control system, again by described current controlled quentity controlled variable to be loaded in the way of PWM in TEC driving control circuit, control the temperature of TEC；
3) when the temperature of described real-time monitoring LD is more than the LD operating temperature set, described single-chip computer control system controls semiconductor refrigeration system work, namely described LD is carried out water-cooled cooling, until the temperature monitoring LD in real time is consistent with the LD operating temperature of setting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610131030.5A CN105790065A (en) | 2016-03-08 | 2016-03-08 | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610131030.5A CN105790065A (en) | 2016-03-08 | 2016-03-08 | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system |
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| CN105790065A true CN105790065A (en) | 2016-07-20 |
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| CN201610131030.5A Pending CN105790065A (en) | 2016-03-08 | 2016-03-08 | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711757A (en) * | 2016-12-16 | 2017-05-24 | 山东北方光学电子有限公司 | Drive circuit for semiconductor laser |
| CN108631151A (en) * | 2018-06-05 | 2018-10-09 | 成都楼兰科技有限公司 | Laser drive circuit |
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| CN1652419A (en) * | 2005-01-07 | 2005-08-10 | 清华大学 | Semiconductor laser driving current control method and multi-mode working driving power supply |
| CN101567519A (en) * | 2009-05-27 | 2009-10-28 | 北京国科世纪激光技术有限公司 | Large-current pulse LD laser driving power supply |
| CN202150633U (en) * | 2011-08-10 | 2012-02-22 | 桂林优西科学仪器有限责任公司 | Wavelength tunable laser system |
| CN103297147A (en) * | 2013-05-21 | 2013-09-11 | 武汉奥新科技有限公司 | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same |
| CN203503975U (en) * | 2013-06-05 | 2014-03-26 | 深圳市创鑫激光技术有限公司 | Driving power supply of semiconductor pumped laser |
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2016
- 2016-03-08 CN CN201610131030.5A patent/CN105790065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1652419A (en) * | 2005-01-07 | 2005-08-10 | 清华大学 | Semiconductor laser driving current control method and multi-mode working driving power supply |
| CN101567519A (en) * | 2009-05-27 | 2009-10-28 | 北京国科世纪激光技术有限公司 | Large-current pulse LD laser driving power supply |
| CN202150633U (en) * | 2011-08-10 | 2012-02-22 | 桂林优西科学仪器有限责任公司 | Wavelength tunable laser system |
| CN103297147A (en) * | 2013-05-21 | 2013-09-11 | 武汉奥新科技有限公司 | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711757A (en) * | 2016-12-16 | 2017-05-24 | 山东北方光学电子有限公司 | Drive circuit for semiconductor laser |
| CN108631151A (en) * | 2018-06-05 | 2018-10-09 | 成都楼兰科技有限公司 | Laser drive circuit |
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Application publication date: 20160720 |