CN110823103A - Calibration control method, device and system of laser line length measuring instrument - Google Patents
Calibration control method, device and system of laser line length measuring instrument Download PDFInfo
- Publication number
- CN110823103A CN110823103A CN201911157616.9A CN201911157616A CN110823103A CN 110823103 A CN110823103 A CN 110823103A CN 201911157616 A CN201911157616 A CN 201911157616A CN 110823103 A CN110823103 A CN 110823103A
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- measuring instrument
- length measuring
- line length
- laser line
- standard disc
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/0207—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer
- G01B9/02072—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the technical field of instrument calibration, and particularly discloses a calibration control method of a laser line length measuring instrument, wherein the method comprises the following steps: outputting a servo motor driving signal according to preset parameters, wherein the servo motor driving signal can drive a standard disc to rotate; acquiring a rotation angle of a standard disc displayed on an angle encoder; calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters; and outputting the rotation line distance of the standard disk. The invention also discloses a calibration control device of the laser line length measuring instrument and a calibration system of the laser line length measuring instrument. The calibration control method of the laser line length measuring instrument provided by the invention can realize the calibration of different speeds and different calibration points of the laser line length measuring instrument, and has the advantages of low cost and simple operation.
Description
Technical Field
The invention relates to the technical field of instrument calibration, in particular to a calibration control method of a laser line length measuring instrument, a calibration control device of the laser line length measuring instrument and a calibration system of the laser line length measuring instrument, wherein the calibration control device of the laser line length measuring instrument is arranged on the calibration control device of the laser line length measuring instrument.
Background
The laser line length measuring instrument adopts a double-light laser Doppler interferometry technique to realize non-contact length measurement. The laser emitted by the laser source generates two beams of light through the beam splitter to generate interference fringes with alternate light and shade on the surface of the object to be detected, and the photodetector detects the change of the interference fringes through recovering the laser and outputs corresponding electric signals. The object to be measured is moved and the photodetector obtains a signal, the speed of the object to be measured can be measured and the length of the object passing through the measuring area can be calculated.
The laser line length measuring instrument is used for real-time non-contact detection of the length of plates, paper, cloth and other materials in industrial production line in the production process, and the measuring accuracy reaches 0.05%. The accuracy of the laser line length measuring instrument also affects the measuring result, so the laser line length measuring instrument needs to be calibrated before being used. But the calibration mode of the laser line length measuring instrument with convenient operation and low cost is lacked at present.
Disclosure of Invention
The invention provides a calibration control method of a laser line length measuring instrument, a calibration control device of the laser line length measuring instrument and a calibration system of the laser line length measuring instrument, which comprises the calibration control device of the laser line length measuring instrument, and solves the problem that the calibration mode of the laser line length measuring instrument, which is convenient to operate and low in cost, is lacked in the related technology.
As a first aspect of the present invention, there is provided a calibration control method for a laser line length measuring instrument, including:
outputting a servo motor driving signal according to preset parameters, wherein the servo motor driving signal can drive a standard disc to rotate;
acquiring a rotation angle of a standard disc displayed on an angle encoder;
calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and outputting the rotation line distance of the standard disk.
Further, the preset parameters include: presetting a calibration point, presetting the linear speed of a standard disc and presetting the diameter of the standard disc.
Further, the calculating the distance of the rotation line of the standard disk according to the rotation angle of the standard disk and the preset parameter includes:
and calculating the distance of the rotating line of the standard disc according to the rotating angle of the standard disc and the diameter of the preset standard disc.
Further, the outputting the rotation line distance of the standard disk comprises:
and outputting the rotating line distance of the standard disc corresponding to each preset calibration point.
As another aspect of the present invention, there is provided a calibration control device for a laser line length measuring instrument, including:
the device comprises a presetting module, a servo motor driving module and a control module, wherein the presetting module is used for outputting a servo motor driving signal according to preset parameters, and the servo motor driving signal can drive a standard disc to rotate;
the acquisition module is used for acquiring the rotation angle of the standard disc displayed on the angle encoder;
the calculation module is used for calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and the output module is used for outputting the rotation line distance of the standard disc.
As another aspect of the present invention, there is provided a calibration system for a laser line length measuring instrument, including: the calibration control device comprises a standard disc, a servo motor, an angle encoder and the laser line length measuring instrument;
the standard disc is used for bearing a laser line length measuring instrument;
the servo motor and the angle encoder are in communication connection with the calibration control device of the laser line length measuring instrument, the servo motor and the angle encoder are electrically connected with the standard disc, the servo motor can drive the standard disc to rotate through a servo motor driving signal output by the calibration control device of the laser line length measuring instrument, and the angle encoder can detect the rotation angle of the standard disc.
Further, still include: the device comprises a flat plate and an aerostatic spindle system, wherein a standard disc is arranged on the flat plate through the aerostatic spindle system, one end of the aerostatic spindle system is connected with the standard disc, the other end of the aerostatic spindle system is connected with one end of a servo motor, an angle encoder is connected with the other end of the servo motor, and the standard disc, the servo motor and the angle encoder are respectively positioned on two sides of the flat plate.
Further, still include: the workbench is arranged on the flat plate through the linear guide rail, the workbench is used for bearing the laser line length measuring instrument, and the linear guide rail can drive the workbench to move so that a laser emitting opening of the laser line length measuring instrument corresponds to the center of the standard disc.
Further, the error of the laser emitting opening of the laser line length measuring instrument corresponding to the center of the standard disc is not more than 2 mm.
Further, still include: the angle iron frame is fixed on the flat plate.
Through the calibration control method of the laser line length measuring instrument, the servo motor driving signal can be output according to the preset parameters, so that the servo motor drives the standard disc to rotate, the number of rotating circles of the standard disc can be controlled through the servo motor, in addition, the rotating angle of the standard disc can be recorded through the angle encoder, and therefore calibration of different speeds and different calibration points of the laser line length measuring instrument can be achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a calibration control method of a laser line length measuring instrument according to the present invention.
Fig. 2 is a structural block diagram of a calibration system of the laser line length measuring instrument provided by the invention.
Fig. 3 is a schematic structural diagram of a calibration system of the laser line length measuring instrument provided by the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a calibration control method of a laser line length measuring instrument is provided, and fig. 1 is a flowchart of a calibration control method of a laser line length measuring instrument according to an embodiment of the present invention, as shown in fig. 1, including:
s110, outputting a servo motor driving signal according to preset parameters, wherein the servo motor driving signal can drive a standard disc to rotate;
s120, acquiring the rotation angle of the standard disc displayed on the angle encoder;
s130, calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and S140, outputting the rotation line distance of the standard disk.
Through the calibration control method of the laser line length measuring instrument, the servo motor driving signal can be output according to the preset parameters, so that the servo motor drives the standard disc to rotate, the number of rotating circles of the standard disc can be controlled through the servo motor, in addition, the rotating angle of the standard disc can be recorded through the angle encoder, and therefore calibration of different speeds and different calibration points of the laser line length measuring instrument can be achieved.
Specifically, the preset parameters include: presetting a calibration point, presetting the linear speed of a standard disc and presetting the diameter of the standard disc.
It can be understood that, by setting the preset parameters, corresponding servo motor driving signals can be output, so that the standard disk is driven to rotate according to the preset parameters.
Specifically, the calculating the distance of the rotation line of the standard disk according to the rotation angle of the standard disk and the preset parameter includes:
and calculating the distance of the rotating line of the standard disc according to the rotating angle of the standard disc and the diameter of the preset standard disc.
Specifically, the outputting the rotation line distance of the standard disk includes:
and outputting the rotating line distance of the standard disc corresponding to each preset calibration point.
It can be understood that, the implementation of the calibration control process of the laser line length measuring instrument by the calibration control method of the laser line length measuring instrument specifically may include:
1) and mounting the measured laser line length measuring instrument on the measured worktable, and adjusting the laser line length measuring instrument to enable the emitted laser to pass through the center of the standard disc as much as possible.
2) And the working platform is moved to enable the two laser spots emitted by the laser port to coincide into one beam on the surface of the standard circular disc.
3) The linear speed of the standard disc is set on the software, and the calibration point is set. And starting the laser line length measuring instrument and zeroing, and starting the servo motor to drive the standard disc to rotate.
4) Calculating the distance of the rotation line of the standard disk according to the rotation angle value recorded by the angle encoder and the diameter of the standard disk:
wherein D represents the diameter of the standard disk and represents the rotation angle value of the standard disk.
It should be noted that, the rotation line distance of the standard disc is output at each calibration point, and at this time, the rotation line distance may be compared with a value displayed on the laser line length measuring instrument to obtain an error value of the laser line length measuring instrument, and the error value is given.
As another embodiment of the present invention, there is provided a calibration control device for a laser line length measuring instrument, including:
the device comprises a presetting module, a servo motor driving module and a control module, wherein the presetting module is used for outputting a servo motor driving signal according to preset parameters, and the servo motor driving signal can drive a standard disc to rotate;
the acquisition module is used for acquiring the rotation angle of the standard disc displayed on the angle encoder;
the calculation module is used for calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and the output module is used for outputting the rotation line distance of the standard disc.
Through the calibration control device of the laser line length measuring instrument, a servo motor driving signal can be output according to preset parameters, so that the servo motor drives the standard disc to rotate, the number of rotating circles of the standard disc can be controlled through the servo motor, in addition, the rotating angle of the standard disc can be recorded through the angle encoder, and therefore calibration of different speeds and different calibration points of the laser line length measuring instrument can be achieved, and the calibration control device has the advantages of being low in cost and simple in operation.
As another embodiment of the present invention, there is provided a calibration system for a laser line length measuring instrument, as shown in fig. 2, including: the calibration control device 140 for the standard disk 110, the servo motor 120, the angle encoder 130 and the laser line length measuring instrument;
the standard disc 110 is used for bearing the laser line length measuring instrument 100;
the servo motor 120 and the angle encoder 130 are both in communication connection with the calibration control device 140 of the laser linear length measuring instrument, the servo motor 120 and the angle encoder 130 are both electrically connected with the standard disk 110, the servo motor 120 can drive the standard disk 110 to rotate according to a servo motor 120 driving signal output by the calibration control device 140 of the laser linear length measuring instrument, and the angle encoder 130 can detect the rotation angle of the standard disk 110.
Through the calibration system of the laser line length measuring instrument, the servo motor is used for controlling the number of rotation turns of the standard disc, the angle encoder is used for accurately recording the value of the rotation angle, and calibration at different speeds and different calibration points can be realized. In addition, the calibration system of the laser line length measuring instrument provided by the invention has relatively low implementation cost and simple operation, and after the measured laser line length measuring instrument is fixed for the first time, the subsequent calibration operation can be controlled by a computer, so that full-automatic calibration is easy to realize.
Specifically, as shown in fig. 3, the method further includes: the disc type angle encoder comprises a flat plate 150 and an aerostatic spindle system 160, wherein the standard disc 110 is arranged on the flat plate 150 through the aerostatic spindle system 160, one end of the aerostatic spindle system 160 is connected with the standard disc 110, the other end of the aerostatic spindle system 160 is connected with one end of the servo motor 120, the angle encoder 130 is connected with the other end of the servo motor 120, and the standard disc 110, the servo motor 120 and the angle encoder 130 are respectively positioned on two sides of the flat plate 150.
It should be noted that the structure of the aerostatic spindle system 160 and the working principle thereof are well known to those skilled in the art and will not be described herein.
Specifically, as shown in fig. 3, the method further includes: the laser line length measuring device comprises a workbench 170 and a linear guide rail 180, the workbench 170 is arranged on the flat plate 150 through the linear guide rail 180, the workbench 170 is used for bearing the laser line length measuring device 100, and the linear guide rail 180 can drive the workbench 170 to move so that a laser emitting opening of the laser line length measuring device 100 corresponds to the center of the standard disc 110.
Specifically, the error of the laser emitting port of the laser line length measuring instrument corresponding to the center of the standard disc is not more than 2 mm.
Specifically, the method further comprises the following steps: the angle iron frame 190, the flat plate 150 is fixed on the angle iron frame 190.
It should be noted that, as shown in fig. 3, the angle iron frame 190 is fixedly connected to the flat plate 150 through a connecting angle iron 200.
Preferably, the plate 150 comprises a granite plate.
The standard disc 110 and the angle encoder 130 are main bodies of the calibration system, the laser line length measuring instrument 100 is placed on the workbench 170, and the workbench 170 can move back and forth on the linear guide rail 180 and is used for adjusting the depth of field distance (300 mm +/-30 mm) and controlling the error of the laser emitting port of the calibrated laser line length measuring instrument to align with the center of the standard disc to be less than 2mm, so that light spots can be well overlapped. The standard disc 110 is driven by a servo motor 120, the servo motor 120 is connected with a calibration control device of the laser line length measuring instrument through a motor control module, the rotation angular speed and the rotation number of the standard disc 110 are controlled, an accurate rotation angle value is recorded by an angle encoder, and the line length value is obtained through calculation of the calibration control device of the laser line length measuring instrument by combining the diameter of the standard disc.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A calibration control method of a laser line length measuring instrument is characterized by comprising the following steps:
outputting a servo motor driving signal according to preset parameters, wherein the servo motor driving signal can drive a standard disc to rotate;
acquiring a rotation angle of a standard disc displayed on an angle encoder;
calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and outputting the rotation line distance of the standard disk.
2. The calibration control method of the laser line length measuring instrument according to claim 1, wherein the preset parameters include: presetting a calibration point, presetting the linear speed of a standard disc and presetting the diameter of the standard disc.
3. The calibration control method of the laser line length measuring instrument according to claim 2, wherein the calculating the rotation line distance of the standard disk according to the rotation angle of the standard disk and the preset parameter includes:
and calculating the distance of the rotating line of the standard disc according to the rotating angle of the standard disc and the diameter of the preset standard disc.
4. The calibration control method of the laser line length measuring instrument according to claim 2, wherein the outputting the rotation line distance of the standard disk includes:
and outputting the rotating line distance of the standard disc corresponding to each preset calibration point.
5. A calibration control device of a laser line length measuring instrument is characterized by comprising:
the device comprises a presetting module, a servo motor driving module and a control module, wherein the presetting module is used for outputting a servo motor driving signal according to preset parameters, and the servo motor driving signal can drive a standard disc to rotate;
the acquisition module is used for acquiring the rotation angle of the standard disc displayed on the angle encoder;
the calculation module is used for calculating the distance of a rotation line of the standard disc according to the rotation angle of the standard disc and preset parameters;
and the output module is used for outputting the rotation line distance of the standard disc.
6. A system for calibrating a laser line length gauge, comprising: a calibration control device of a standard disk, a servo motor, an angle encoder and the laser line length measuring instrument of claim 5;
the standard disc is used for bearing a laser line length measuring instrument;
the servo motor and the angle encoder are in communication connection with the calibration control device of the laser line length measuring instrument, the servo motor and the angle encoder are electrically connected with the standard disc, the servo motor can drive the standard disc to rotate through a servo motor driving signal output by the calibration control device of the laser line length measuring instrument, and the angle encoder can detect the rotation angle of the standard disc.
7. The system for calibrating a laser line length measuring instrument according to claim 6, further comprising: the device comprises a flat plate and an aerostatic spindle system, wherein a standard disc is arranged on the flat plate through the aerostatic spindle system, one end of the aerostatic spindle system is connected with the standard disc, the other end of the aerostatic spindle system is connected with one end of a servo motor, an angle encoder is connected with the other end of the servo motor, and the standard disc, the servo motor and the angle encoder are respectively positioned on two sides of the flat plate.
8. The system for calibrating a laser line length measuring instrument according to claim 7, further comprising: the workbench is arranged on the flat plate through the linear guide rail, the workbench is used for bearing the laser line length measuring instrument, and the linear guide rail can drive the workbench to move so that a laser emitting opening of the laser line length measuring instrument corresponds to the center of the standard disc.
9. The system for calibrating a laser line length measuring instrument according to claim 8, wherein the error of the laser emitting opening of the laser line length measuring instrument corresponding to the center of the standard disk is not more than 2 mm.
10. The system for calibrating a laser line length measuring instrument according to claim 7, further comprising: the angle iron frame is fixed on the flat plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911157616.9A CN110823103A (en) | 2019-11-22 | 2019-11-22 | Calibration control method, device and system of laser line length measuring instrument |
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| CN201911157616.9A CN110823103A (en) | 2019-11-22 | 2019-11-22 | Calibration control method, device and system of laser line length measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112171607A (en) * | 2020-09-29 | 2021-01-05 | 无锡华光环保能源集团股份有限公司 | Rotation control method for large-sized barrel part |
| CN112815878A (en) * | 2021-01-06 | 2021-05-18 | 长春市春求科技开发有限公司 | Angular displacement measuring device and measuring and calibrating method |
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| CN108444398A (en) * | 2018-06-27 | 2018-08-24 | 苏州瑞耀三维科技有限公司 | A kind of calibrating installation for the laser rays length measuring apparatus error of indication |
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| CN2872297Y (en) * | 2005-10-13 | 2007-02-21 | 哈尔滨工程大学 | Non-contacting and large-diameter measuring equipment based on image method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112171607A (en) * | 2020-09-29 | 2021-01-05 | 无锡华光环保能源集团股份有限公司 | Rotation control method for large-sized barrel part |
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Application publication date: 20200221 |