CN102364369A - Focusing method of focusing device - Google Patents
Focusing method of focusing device Download PDFInfo
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- CN102364369A CN102364369A CN2011100481188A CN201110048118A CN102364369A CN 102364369 A CN102364369 A CN 102364369A CN 2011100481188 A CN2011100481188 A CN 2011100481188A CN 201110048118 A CN201110048118 A CN 201110048118A CN 102364369 A CN102364369 A CN 102364369A
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Abstract
The invention discloses a focusing method of a focusing device which is applied to a carbon dioxide (CO2) laser marking machine. The focusing device comprises a device system and a device system control system. A specific adjusting distance value is inputted through a keystroke, a pulse width modulation (PWM) pulse is outputted by a main control panel according to a set value to control a stepper motor driving device, and the stepper motor driving device drives a stepper motor to drive an optical lens holding device to move so as to change a focus; or the specific adjusting distance value is inputted through host computer software, the main control panel is communicated with the host computer software through a serial port, the main control panel outputs the PWM pulse according to the set value to control the stepper motor driving device, and the stepper motor driving device drives the stepper motor so as to drive the optical lens holding device to move and change the focus. The focusing device system has the characteristics of fast response speed, high precision, convenience in operation, high efficiency and the like.
Description
[technical field]
The invention relates to a kind of focus adjustment method of focus control of the CO2 of application laser marking machine.
[background technology]
In existing CO2 laser marking machine focus control is used, adopt mechanical type manual knob regulative mode.Mechanical type manual knob regulative mode precision is not high, regulates inconvenience and time-consuming, the distance that shows concrete adjusting not directly perceived.When also having at every turn the adjustment focus, repeat former step, efficient is reduced.So mechanical type manual knob regulative mode is used at CO2 laser marking machine focus control and deposited deficiency, automatic focusing device plays a part more and more important in CO2 laser marking machine focus control is used.
[summary of the invention]
It is a kind of in CO2 laser marking machine focus control is used that the present invention provides, and the existing focusing accuracy practical adjustments distance that shows high and directly perceived can make the focus adjustment method easy to operate and focus control of raising the efficiency again.
The technical scheme that the present invention adopted is: this automatic focusing device is to import concrete adjustable range value through button; Master control board comes the control step motor driver according to setting value output pwm pulse; The stepper motor driver drive stepping motor drives dress optical mirror slip device and moves, and changes focal length; Or import concrete adjustable range value through upper computer software; Master control board is communicated by letter through serial ports with upper computer software; Master control board comes the control step motor driver according to setting value output pwm pulse; The stepper motor driver drive stepping motor drives dress optical mirror slip device and moves, and changes focal length.Characteristics such as this focus control system response time is fast, precision is high, easy to operate, efficient height.
[description of drawings]
Combine embodiment that the present invention is done further description with reference to the accompanying drawings.
Fig. 1 is the control system theory diagram of focus control of the present invention.
[embodiment]
With reference to Fig. 1; This focus control is to be applied to the CO2 laser marking machine; This focus control is the side-to-side movement control device, and this focus control is made up of master control board 1, button 2, high precision range sensor 3, serial communication 4, upper computer software 5, LCD demonstration 6, stepper motor driver 7, stepper motor 8 and dress optical mirror slip device 9.This focus control is set stepper motor 8 segmentation numbers through toggle switch, calculates stepper motor 8 step-lengths (being that stepper motor one step pitch is from size).
The focus adjustment of this focus control has two kinds, and first kind of focus adjustment method is to regulate through serial communication 4 at upper computer software 5 input occurrences, operates convenient like this and the efficient height; Concrete control method is following: set through upper computer software 5 and want the adjustable range value; Upper computer software 5 is passed to master control board 1 to setup parameter through serial communication 4, when setup parameter is received in master control board 1, calculates umber of pulse through umber of pulse (N)=setpoint distance ÷ stepper motor step length algorithm; Master control board 1 output is calculated N pwm pulse and is come control step motor driver 7; Stepper motor driver 7 drive stepping motor 8 drive dress optical mirror slip device and move, and high precision range sensor 3 detects dress optical mirror slip device displacement simultaneously, feeds back to master control board 1; Master control board 1 is compared according to setting value and value of feedback; If difference is greater than error amount, master control board 1 continues control step motor 8 and regulates dress optical mirror slip device, just stops to regulate less than error amount up to difference.LCD shows 6 setpoint distance values and detects distance value, can very intuitively see the practical adjustments distance like this.
Second kind of focus adjustment method is that button is directly imported occurrence and regulated; Concrete adjustment process is following: set through button input 2 and want the adjustable range value to get into master control board; Master control board 1 is calculated umber of pulse through umber of pulse (N)=setpoint distance ÷ stepper motor step length algorithm, and master control board 1 output is calculated N pwm pulse and come the control step motor driver, and stepper motor driver 7 drive stepping motor 8 drive dress optical mirror slip device and move; High precision range sensor 3 detects dress optical mirror slip device displacement; Feed back to master control board 1, master control board 1 is compared according to setting value and value of feedback, if difference is greater than error amount; Master control board 1 continues control step machine 8 and regulates dress optical mirror slip device, just stops to regulate less than error amount up to difference.LCD shows 6 setpoint distance values and detects distance value, can very intuitively see the practical adjustments distance like this.
Claims (2)
1. focus adjustment method that is applied to the focus control of laser marking machine; It is characterized in that; This focus control comprises: master control board, sensor, serial communication, upper computer software, LCD demonstration, stepper motor driver, stepper motor and dress lens device, this focus adjustment method comprises the steps:
A, upper computer software are set the distance value that will regulate, and upper computer software is passed to master control board to setup parameter through serial communication;
The setup parameter of serial communication transmission is received in b, master control board, calculates umber of pulse through umber of pulse (N)=setpoint distance ÷ stepper motor step length algorithm, and master control board output is calculated N pwm pulse and come the control step motor driver;
C, stepper motor driver drive stepping motor drive dress optical mirror slip device and move, and sensor comes out to adorn optical mirror slip device displacement simultaneously, feeds back to master control board;
D, master control board according to setting value and value of feedback relatively, if difference greater than error amount, master control board continues the control step motor and regulates dress optical mirror slip device, just stops to regulate less than error amount up to difference;
E, LCD display setting distance value and detection distance value.
2. focus adjustment method that is applied to the focus control of laser marking machine; It is characterized in that; This focus control comprises: master control board, sensor, button input, LCD demonstration, stepper motor driver, stepper motor and dress lens device, this focus adjustment method comprises the steps:
A, button input are set and are wanted the adjustable range value to get into master control board;
B, master control board are calculated umber of pulse through umber of pulse (N)=setpoint distance ÷ stepper motor step length algorithm, and master control board output is calculated N pwm pulse and come the control step motor driver;
C, stepper motor driver drive stepping motor drive dress optical mirror slip device and move, and sensor 3 detects dress optical mirror slip device displacement simultaneously, feeds back to master control board 1;
D, master control board 1 according to setting value and value of feedback relatively, if difference greater than error amount, master control board continues the control step machine and regulates dress optical mirror slip device, just stops to regulate less than error amount up to difference;
E, LCD display setting distance value and detection distance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100481188A CN102364369A (en) | 2011-02-28 | 2011-02-28 | Focusing method of focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100481188A CN102364369A (en) | 2011-02-28 | 2011-02-28 | Focusing method of focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364369A true CN102364369A (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011100481188A Pending CN102364369A (en) | 2011-02-28 | 2011-02-28 | Focusing method of focusing device |
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| CN (1) | CN102364369A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921560A (en) * | 2014-04-03 | 2014-07-16 | 南京先进激光技术研究院 | Laser color marking method and system |
| CN107961446A (en) * | 2017-09-28 | 2018-04-27 | 北京东生智控科技有限公司 | Q-switch laser beauty instrument automatic focusing hand-held therapeutic head |
| CN111060494A (en) * | 2019-12-28 | 2020-04-24 | 安徽中科赛飞尔科技有限公司 | Chip feedback adjusting device for SERS detection |
| CN117472677A (en) * | 2023-12-26 | 2024-01-30 | 深圳市魔力信息技术有限公司 | Face recognition equipment testing method and testing system |
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| CN2776618Y (en) * | 2004-12-10 | 2006-05-03 | 上海市激光技术研究所 | Laser etching machine having feed back control |
| CN101913024A (en) * | 2010-08-24 | 2010-12-15 | 上海市激光技术研究所 | System and method for processing dynamic focusing scanning spot track of optical fiber laser or disk laser |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2776618Y (en) * | 2004-12-10 | 2006-05-03 | 上海市激光技术研究所 | Laser etching machine having feed back control |
| CN101913024A (en) * | 2010-08-24 | 2010-12-15 | 上海市激光技术研究所 | System and method for processing dynamic focusing scanning spot track of optical fiber laser or disk laser |
Non-Patent Citations (2)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921560A (en) * | 2014-04-03 | 2014-07-16 | 南京先进激光技术研究院 | Laser color marking method and system |
| CN103921560B (en) * | 2014-04-03 | 2016-01-20 | 南京先进激光技术研究院 | A kind of laser color marking method and system |
| CN107961446A (en) * | 2017-09-28 | 2018-04-27 | 北京东生智控科技有限公司 | Q-switch laser beauty instrument automatic focusing hand-held therapeutic head |
| CN111060494A (en) * | 2019-12-28 | 2020-04-24 | 安徽中科赛飞尔科技有限公司 | Chip feedback adjusting device for SERS detection |
| CN117472677A (en) * | 2023-12-26 | 2024-01-30 | 深圳市魔力信息技术有限公司 | Face recognition equipment testing method and testing system |
| CN117472677B (en) * | 2023-12-26 | 2024-03-08 | 深圳市魔力信息技术有限公司 | Face recognition equipment testing method and testing system |
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Application publication date: 20120229 |
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Address after: Dazu laser Building No. 9 Nanshan District high tech Park North new road Shenzhen city Guangdong province 518055 Applicant after: HANS LASER TECHNOLOGY INDUSTRY GROUP CO., LTD. Address before: Dazu laser Building No. 9 Nanshan District high tech Park North new road Shenzhen city Guangdong province 518055 Applicant before: Dazu Laser Sci. & Tech. Co., Ltd., Shenzhen |
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Free format text: CORRECT: APPLICANT; FROM: DAZU LASER SCI. + TECH. CO., LTD., SHENZHEN TO: HAN S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD. |