CN202564782U - Intelligently-controlled semiconductor laser power system - Google Patents
Intelligently-controlled semiconductor laser power system Download PDFInfo
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- CN202564782U CN202564782U CN2012202114037U CN201220211403U CN202564782U CN 202564782 U CN202564782 U CN 202564782U CN 2012202114037 U CN2012202114037 U CN 2012202114037U CN 201220211403 U CN201220211403 U CN 201220211403U CN 202564782 U CN202564782 U CN 202564782U
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Abstract
The utility model discloses an intelligently-controlled semiconductor laser power system, mainly comprising a central processing unit, and a laser diode (LD) drive circuit, a precision detection circuit, a current monitoring circuit and a laser drive chip, wherein the LD drive circuit, the precision detection circuit, the current monitoring circuit and the laser drive chip are connected with the central processing unit. The intelligently-controlled semiconductor laser power system disclosed by utility model has the advantage that the power meets the requirement of steady accuracy of a laser by using a digital control scheme.
Description
Technical field
The utility model relates to the laser circuit design, specifically is meant the power source of semiconductor laser system of Based Intelligent Control.
Background technology
The core of semiconductor laser is that the in a single day breakdown or resonant-cavity surface of PN junction is partly destroyed, and then can't produce non equilibrium carrier and radiation recombination, looks its destructiveness and shows as laser output and reduce or lost efficacy.
The reason that causes LD to damage is mainly the chamber surface pollution and surge punctures.The chamber surface pollution can solve through purifying operational environment, and more the damage punctures because of surge.Surge can produce semiconductor laser PN junction damage or puncture, and it produces reason is many-sided, comprising: 1. mains switch immediate current; 2. shutdown has been equipped in other electricity consumption in the electrical network; 3. thunder and lightning; 4. strong electrostatic field etc.Factors such as the high pressure under the actual working environment, static, surge impact will cause the damage of LD or useful life to shorten, and therefore something must be done to protects.
The conventional laser power supply is realized with pure hardware circuit, adopts analog control mode, though also driving laser preferably can't be realized accurate control, in a lot of commercial Application, has reduced precision and automaticity, has also limited the application of laser.Use single-chip microcomputer that Laser Power Devices are controlled, can simplify the hardware configuration of Laser Power Devices, solve the problems such as accurate, stable and reliability of semiconductor laser work effectively.Along with the large scale integrated circuit technology rapid development, adopt the chip that is fit to LD that power supply reliability is greatly improved.
The utility model content
The purpose of the utility model is to provide a kind of power source of semiconductor laser system of Based Intelligent Control.
The implementation of the utility model is following: the power source of semiconductor laser system of Based Intelligent Control mainly is made up of central processing unit and the LD drive circuit that is connected with central processing unit, accurate testing circuit, current monitoring circuit, laser driving chip.
Said LD drive circuit is a constant-current source circuit, and said LD drive circuit comprises constant-current source chip for driving HY6340.
Said central processing unit also is connected with protective circuit, and said protective circuit comprises thermal-shutdown circuit, current foldback circuit, surge protection circuit.
Said central processing unit also is connected with parameter keyboard is set.
Said parameter is provided with keyboard and comprises the CH451 chip.
Said central processing unit is the C8051F020 digital processing chip.
The utility model is core with the digital integrated circuit, and design can realize the power source of semiconductor laser of Based Intelligent Control.
The utility model is mainly by constituting with the lower part.
Power supply: realize the conversion between system's supply power voltage (alternating current 220V) and the system works voltage.And the employing filtering technique, make that the voltage ripple of semiconductor laser work is very little, guarantee the operate as normal of semiconductor laser.
Based Intelligent Control: mainly accomplish by central processing unit.The LD drive circuit works is under constant current mode; After setting electric current; Central processing unit is according to the current signal value of sensor sample; After passing through certain algorithm output voltage is passed through the feedback pin that discharge circuit is delivered to laser driving chip, automatically adjust, realize the intellectuality of laser to reach the electric current output of setting.
Protective circuit: the semiconductor laser drive system must be equipped with protective circuit.Protective circuit will reduce the ectocine that receives in the LD drive circuit practice, strengthen the reliability of system.This part mainly comprises thermal-shutdown circuit, current foldback circuit, surge protection circuit.
The C8051F020 digital processing chip of selecting Silicon company for use is a digital processing element.In the scanning keypress function that parameter is provided with keyboard is realized, use the CH451 built-in chip type to go to tremble function and keyboard interrupt function, can save the internal operation time of single-chip microcomputer, guaranteed the accuracy that button reads.
Start back laser preheating half an hour, the operating current of regulating laser through the software set mode is to 1.5A, the operation of laser start-up system, and operating current steadily rises and reaches 1.5A, and dynamic response time is between 1.5 ~ 2s.System's output current is 1.5A, continuous operation 4 hours, and every interval 10 minutes records, 1 primary current is according to time arrangement test sequence and corresponding current value.The result shows that the Control current of system is stable, and error is little.Close laser behind the EOT, system progressively reduces output voltage signal, reduces power output to zero back laser and quits work.The result shows, adopts the power supply of digital control scheme to reach the stable state accuracy requirement of laser.
The advantage of the utility model is: adopt the power supply of digital control scheme to reach the stable state accuracy requirement of laser.
Description of drawings
Fig. 1 is the utility model overall structure sketch map.
Embodiment
Embodiment one
As shown in Figure 1.
The power source of semiconductor laser system of Based Intelligent Control mainly is made up of central processing unit and the LD drive circuit that is connected with central processing unit, accurate testing circuit, current monitoring circuit, laser driving chip.
Said LD drive circuit is a constant-current source circuit, and said LD drive circuit comprises constant-current source chip for driving HY6340.
Said central processing unit also is connected with protective circuit, and said protective circuit comprises thermal-shutdown circuit, current foldback circuit, surge protection circuit.
Said central processing unit also is connected with parameter keyboard is set.
Said parameter is provided with keyboard and comprises the CH451 chip.
Said central processing unit is the C8051F020 digital processing chip.
The utility model is core with the digital integrated circuit, and design can realize the power source of semiconductor laser of Based Intelligent Control.
The utility model is mainly by constituting with the lower part.
Power supply: realize the conversion between system's supply power voltage (alternating current 220V) and the system works voltage.And the employing filtering technique, make that the voltage ripple of semiconductor laser work is very little, guarantee the operate as normal of semiconductor laser.
Based Intelligent Control: mainly accomplish by central processing unit.The LD drive circuit works is under constant current mode; After setting electric current; Central processing unit is according to the current signal value of sensor sample; After passing through certain algorithm output voltage is passed through the feedback pin that discharge circuit is delivered to laser driving chip, automatically adjust, realize the intellectuality of laser to reach the electric current output of setting.
Protective circuit: the semiconductor laser drive system must be equipped with protective circuit.Protective circuit will reduce the ectocine that receives in the LD drive circuit practice, strengthen the reliability of system.This part mainly comprises thermal-shutdown circuit, current foldback circuit, surge protection circuit.
The C8051F020 digital processing chip of selecting Silicon company for use is a digital processing element.In the scanning keypress function that parameter is provided with keyboard is realized, use the CH451 built-in chip type to go to tremble function and keyboard interrupt function, can save the internal operation time of single-chip microcomputer, guaranteed the accuracy that button reads.
Native system is provided with in parameter and carries out parameter setting under the keyboard to set up; Under the effect of central processing unit through accurate testing circuit, current monitoring circuit; Can obtain various power parameters, central processing unit is according to the current signal value of sensor sample, through behind certain algorithm output voltage being passed through the feedback pin that discharge circuit is delivered to laser driving chip; Automatically adjust to reach the electric current output of setting, realize the intellectuality of laser.
Start back laser preheating half an hour, the operating current of regulating laser through the software set mode is to 1.5A, the operation of laser start-up system, and operating current steadily rises and reaches 1.5A, and dynamic response time is between 1.5 ~ 2s.System's output current is 1.5A, continuous operation 4 hours, and every interval 10 minutes records, 1 primary current is according to time arrangement test sequence and corresponding current value.The result shows that the Control current of system is stable, and error is little.Close laser behind the EOT, system progressively reduces output voltage signal, reduces power output to zero back laser and quits work.The result shows, adopts the power supply of digital control scheme to reach the stable state accuracy requirement of laser.
As stated, then can well realize the utility model.
Claims (6)
1. the power source of semiconductor laser system of Based Intelligent Control is characterized in that: mainly be made up of central processing unit and the LD drive circuit that is connected with central processing unit, accurate testing circuit, current monitoring circuit, laser driving chip.
2. the power source of semiconductor laser system of Based Intelligent Control according to claim 1, it is characterized in that: said LD drive circuit is a constant-current source circuit, said LD drive circuit comprises constant-current source chip for driving HY6340.
3. the power source of semiconductor laser system of Based Intelligent Control according to claim 1, it is characterized in that: said central processing unit also is connected with protective circuit, and said protective circuit comprises thermal-shutdown circuit, current foldback circuit, surge protection circuit.
4. the power source of semiconductor laser system of Based Intelligent Control according to claim 1, it is characterized in that: said central processing unit also is connected with parameter keyboard is set.
5. the power source of semiconductor laser system of Based Intelligent Control according to claim 4, it is characterized in that: said parameter is provided with keyboard and comprises the CH451 chip.
6. the power source of semiconductor laser system of Based Intelligent Control according to claim 1, it is characterized in that: said central processing unit is the C8051F020 digital processing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202114037U CN202564782U (en) | 2012-05-11 | 2012-05-11 | Intelligently-controlled semiconductor laser power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202114037U CN202564782U (en) | 2012-05-11 | 2012-05-11 | Intelligently-controlled semiconductor laser power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564782U true CN202564782U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202114037U Expired - Fee Related CN202564782U (en) | 2012-05-11 | 2012-05-11 | Intelligently-controlled semiconductor laser power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564782U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390855A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Intelligent-control semiconductor laser power source system |
| CN105278446A (en) * | 2014-07-22 | 2016-01-27 | 北京热刺激光技术有限责任公司 | Numerical control system for monitoring laser drive power supply |
-
2012
- 2012-05-11 CN CN2012202114037U patent/CN202564782U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390855A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Intelligent-control semiconductor laser power source system |
| CN105278446A (en) * | 2014-07-22 | 2016-01-27 | 北京热刺激光技术有限责任公司 | Numerical control system for monitoring laser drive power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130511 |