CN104505701A - Calibration method of set power of high-power laser - Google Patents
Calibration method of set power of high-power laser Download PDFInfo
- Publication number
- CN104505701A CN104505701A CN201410837794.7A CN201410837794A CN104505701A CN 104505701 A CN104505701 A CN 104505701A CN 201410837794 A CN201410837794 A CN 201410837794A CN 104505701 A CN104505701 A CN 104505701A
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- CN
- China
- Prior art keywords
- laser
- value
- power
- control system
- demarcation
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Abstract
The invention discloses a calibration method of set power of a high-power laser. A laser power supply (1), a laser (2), a laser power meter (3) and a laser control system (4) are provided. A set power value of the laser control system (4) is preset as SP, current value of the laser power supply is I, and measurement value of the laser power meter (3) is P. The SP is 0 in the minimum value and Pmax in the maximum value. SP values are preset as certain ranges are spaced, to be specific, the range is Delta P, and in this way, the SP has Pmax/Delta P calibration points. The calibration method is imparted simple algorithm, high in precision and effective in automatic calibration of the high-power laser output value in the rapid and high-precision manner.
Description
Technical field
The invention belongs to laser field, relate to the scaling method that high power laser product arranges power, actual power and current value.
Background technology
Laser, when production completes debugging, needs to demarcate the relation arranging power and actual power, current value, only needs input to arrange performance number, i.e. the laser of exportable corresponding power after having demarcated.Because semiconductor laser current value and actual power value exist non-linear relation, existing way is by artificial image data, carry out statistics to average, carry out curve fitting and then write computer program and demarcate, calibration process needs to gather mass data, programming workload is comparatively large, and production efficiency is low, is unfavorable for that production efficiency improves.
Summary of the invention
For above problem, the object of the present invention is to provide a kind of superpower laser that power calibration method is set, by arranging the correlation of power, actual power and Laser Power Devices current value, passing through Laser Control System, automatically complete demarcation, improve efficiency and the accuracy of demarcation.
Technical scheme of the present invention is achieved in the following ways: a kind of superpower laser arranges power calibration method, by Laser Power Devices, and laser, laser power meter, Laser Control System forms, and in Laser Control System, presetting one, to arrange performance number be SP, and Laser Power Devices current value is I, the measured value of laser power meter is P, the minimum value of SP is 0, and maximum is Pmax, presets a SP value every certain amplitude, this amplitude is set to △ P, and namely SP has Pmax/ △ P calibration point; Automatic Calibration algorithm performs following steps: it is characterized in that:
1), to preset SP be △ P value to Laser Control System, i.e. SP
0=△ P, controls to be worth I based on Laser Power Devices electric current I
0, i.e. I=I
0, then now, the power that laser exports is P
0, laser power meter is by P
0value feeds back to Laser Control System;
2), Laser Control System compares SP
0and P
0value:
If 1. SP
0-P
0> 30, electric current I
0every 5s increases progressively with 0.05A;
If 2. 30>=SP
0-P
0> 0, electric current I
0every 6s increases progressively with 0.02A;
If 3. SP
0-P
0<-30W, electric current I
0every 5s successively decreases with 0.05A;
If 4.-30≤SP
0-P
0during < 0, electric current I
0every 6s successively decreases with 0.02A;
3), through step 2, I
0value increase or reduce certain value, become I
1, the power that now laser exports is P
0become P
1, laser power meter is by P
1value feeds back to Laser Control System;
4), Laser Control System compares SP
0and P
1value, if | SP
0-P
1| < 10 also keeps 10s, then remember I
1for SP
0calibrated current; Otherwise, repeat step 2, until meet: | SP
0-P
1| < 10 also keeps the condition of 10s, completes SP
0demarcation, suppose that its Calibrated current is I
n, P is P
n;
5), SP is worked as
0after completing demarcation, automatically increase a △ P value, i.e. SP
1=2* △ P, now the current value of Laser Power Devices is I
n, the value P of power meter is P
n, start the content of repetition step 1 to step 4, until complete SP
1demarcation, the like until complete the demarcation of SP=Pmax.
After completing the calibration value of SP=Pmax, whether Laser Control System automatic Verification calibration result is correct, when the value difference of SP and P is in error range, and this system calibrating success, otherwise system re-starts demarcation.
The present invention, algorithm is simple, and precision is high, can realize the automatic Calibration of high-precision high power laser light output valve fast.
Accompanying drawing explanation
Fig. 1 is block diagram of the present invention.
Embodiment
Known by Fig. 1, a kind of superpower laser arranges power calibration method, comprise Laser Power Devices 1, laser 2, laser power meter 3, Laser Control System 4, first in Laser Control System 4, preset one and performance number is set, Laser Control System 4 is according to the automatic Calibration algorithm of its inside, control the current value of Laser Power Devices 1, laser 2 is made to export the laser beam of certain power, laser power meter 3 is for measuring the performance number of laser 2 outgoing laser beam, simultaneously laser power meter 3 by signal feedback corresponding for laser beam power value to Laser Control System 4, the laser beam power signal that Laser Control System 4 feeds back according to laser power meter 3, revise the current value of Laser Power Devices 1, thus change the output power value of laser 2, when the performance number that laser power meter 3 measures with arrange performance number in error range time, Laser Control System 4 writes down the default current value arranging performance number and now Laser Power Devices 1 automatically, demarcate other preset performance number is set, all timing signal is completed when completing all default performance numbers that arranges, the current value of all default Laser Power Devices 1 that performance number and correspondence are set of Laser Control System 4 automatic Memory, after completing demarcation, as long as input arranges performance number in Laser Control System, namely laser 2 exports the laser of corresponding power.
A kind of superpower laser of the present invention arranges power calibration method, the realization of the inner automatic Calibration algorithm of its Laser Control System 4, comprise setting and default performance number is set as SP, Laser Power Devices current value is I, and the measured value of laser power meter 3 is the minimum value of P, SP is 0, maximum is Pmax, preset a SP value every certain amplitude, this amplitude is set to △ P, and namely SP has Pmax/ △ P calibration point.Automatic Calibration algorithm performs following steps.
Step 1, it is △ P value that Laser Control System 4 presets SP, i.e. SP
0=△ P, controls to be worth I based on Laser Power Devices electric current I
0, i.e. I=I
0, then now, the power that laser 2 exports is P
0, laser power meter 3 is by P
0value feeds back to Laser Control System 4.
Step 2, Laser Control System 4 compares SP
0and P
0value:
If 1. SP
0-P
0> 30, electric current I
0every 5s increases progressively with 0.05A;
If 2. 30>=SP
0-P
0> 0, electric current I
0every 6s increases progressively with 0.02A;
If 3. SP
0-P
0<-30W, electric current I
0every 5s successively decreases with 0.05A;
If 4.-30≤SP
0-P
0during < 0, electric current I
0every 6s successively decreases with 0.02A;
Step 3, through step 2, I
0value increase or reduce certain value, become I
1, the power that now laser 2 exports is P
0become P
1, laser power meter 3 is by P
1value feeds back to Laser Control System 4.
Step 4, Laser Control System 4 compares SP
0and P
1value, if | SP
0-P
1| < 10 also keeps 10s, then remember I
1for SP
0calibrated current; Otherwise, repeat step 2, until meet: | SP
0-P
1| < 10 also keeps the condition of 10s, completes SP
0demarcation, suppose that its Calibrated current is I
n, P is P
n
Step 5, works as SP
0after completing demarcation, automatically increase a △ P value, i.e. SP
1=2* △ P, now the current value of Laser Power Devices 1 is I
n, the value P of power meter is P
n.Start the content of repetition step 1 to step 4, until complete SP
1demarcation.
The like until complete the demarcation of SP=Pmax.
When after the demarcation completing SP=Pmax, whether Laser Control System 4 automatic Verification calibration result is correct, when the value difference of SP and P is in error range, and this system calibrating success, otherwise system re-starts demarcation.
Claims (2)
1. superpower laser arranges a power calibration method, by Laser Power Devices (1), and laser (2), laser power meter (3), Laser Control System (4) forms, and in Laser Control System (4), presetting one, to arrange performance number be SP, and Laser Power Devices current value is I, the measured value of laser power meter (3) is P, the minimum value of SP is 0, and maximum is Pmax, presets a SP value every certain amplitude, this amplitude is set to △ P, and namely SP has Pmax/ △ P calibration point; Automatic Calibration algorithm performs following steps: it is characterized in that:
1), Laser Control System (4) preset SP be △ P value, i.e. SP
0=△ P, controls to be worth I based on Laser Power Devices electric current I
0, i.e. I=I
0, then now, the power that laser (2) exports is P
0, laser power meter (3) is by P
0value feeds back to Laser Control System (4);
2), Laser Control System (4) compares SP
0and P
0value:
If 1. SP
0-P
0> 30, electric current I
0every 5s increases progressively with 0.05A;
If 2. 30>=SP
0-P
0> 0, electric current I
0every 6s increases progressively with 0.02A;
If 3. SP
0-P
0<-30W, electric current I
0every 5s successively decreases with 0.05A;
If 4.-30≤SP
0-P
0during < 0, electric current I
0every 6s successively decreases with 0.02A;
3), through step 2, I
0value increase or reduce certain value, become I
1, the power that now laser (2) exports is P
0become P
1, laser power meter (3) is by P
1value feeds back to Laser Control System (4);
4), Laser Control System (4) compares SP
0and P
1value, if | SP
0-P
1| < 10 also keeps 10s, then remember I
1for SP
0calibrated current; Otherwise, repeat step 2, until meet: | SP
0-P
1| < 10 also keeps the condition of 10s, completes SP
0demarcation, suppose that its Calibrated current is I
n, P is P
n;
5), SP is worked as
0after completing demarcation, automatically increase a △ P value, i.e. SP
1=2* △ P, now the current value of Laser Power Devices (1) is I
n, the value P of power meter is P
n, start the content of repetition step 1 to step 4, until complete SP
1demarcation, the like until complete the demarcation of SP=Pmax.
2. a kind of superpower laser according to claim 1 arranges power calibration method, it is characterized in that: after completing the calibration value of SP=Pmax, whether Laser Control System (4) automatic Verification calibration result is correct, when the value difference of SP and P is in error range, this system calibrating success, otherwise system re-starts demarcation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837794.7A CN104505701A (en) | 2014-12-30 | 2014-12-30 | Calibration method of set power of high-power laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837794.7A CN104505701A (en) | 2014-12-30 | 2014-12-30 | Calibration method of set power of high-power laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104505701A true CN104505701A (en) | 2015-04-08 |
Family
ID=52947431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410837794.7A Pending CN104505701A (en) | 2014-12-30 | 2014-12-30 | Calibration method of set power of high-power laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104505701A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666107A (en) * | 2017-10-23 | 2018-02-06 | 深圳市创鑫激光股份有限公司 | Method, laser, storage medium and the electronic installation of calibration of laser power |
| CN112945523A (en) * | 2021-03-12 | 2021-06-11 | 中国科学院半导体研究所 | Power attenuation calibration method and system of power-variable analog laser source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960087A (en) * | 2005-11-01 | 2007-05-09 | 安华高科技光纤Ip（新加坡）私人有限公司 | Method and system for stabilizing operation of laser sources |
| CN102170091A (en) * | 2011-03-31 | 2011-08-31 | 深圳市大族激光科技股份有限公司 | Laser power correcting method |
| CN103915756A (en) * | 2014-04-14 | 2014-07-09 | 北京华泰诺安科技有限公司 | Laser device control system |
-
2014
- 2014-12-30 CN CN201410837794.7A patent/CN104505701A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960087A (en) * | 2005-11-01 | 2007-05-09 | 安华高科技光纤Ip（新加坡）私人有限公司 | Method and system for stabilizing operation of laser sources |
| CN102170091A (en) * | 2011-03-31 | 2011-08-31 | 深圳市大族激光科技股份有限公司 | Laser power correcting method |
| CN103915756A (en) * | 2014-04-14 | 2014-07-09 | 北京华泰诺安科技有限公司 | Laser device control system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666107A (en) * | 2017-10-23 | 2018-02-06 | 深圳市创鑫激光股份有限公司 | Method, laser, storage medium and the electronic installation of calibration of laser power |
| CN107666107B (en) * | 2017-10-23 | 2020-10-16 | 深圳市创鑫激光股份有限公司 | Method of correcting laser power, laser, storage medium, and electronic apparatus |
| CN112945523A (en) * | 2021-03-12 | 2021-06-11 | 中国科学院半导体研究所 | Power attenuation calibration method and system of power-variable analog laser source |
| CN112945523B (en) * | 2021-03-12 | 2022-09-16 | 中国科学院半导体研究所 | Power attenuation calibration method and system of power-variable analog laser source |
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Application publication date: 20150408 |
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