CN111623709A - Image measuring instrument capable of automatically adjusting position of sample to be measured and measuring method - Google Patents
Image measuring instrument capable of automatically adjusting position of sample to be measured and measuring method Download PDFInfo
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- CN111623709A CN111623709A CN202010698119.6A CN202010698119A CN111623709A CN 111623709 A CN111623709 A CN 111623709A CN 202010698119 A CN202010698119 A CN 202010698119A CN 111623709 A CN111623709 A CN 111623709A
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
Abstract
The invention discloses an image measuring instrument capable of automatically adjusting the position of a sample to be measured and a measuring method, wherein the image measuring instrument comprises an XY axis control assembly, a Z axis control assembly, a large-visual-field-range lens and a high-definition camera, wherein a first lead screw motor of the Z axis control assembly is arranged on a supporting seat, and a first guide block is in threaded connection with the first lead screw motor and is provided with a supporting block; the base of the XY axis control assembly is fixedly connected with the supporting base, the second lead screw motor is connected with the base, the middle base is connected with the second lead screw motor through the second guide block, the third lead screw motor is connected with the middle base, the top base is connected with the third lead screw motor through the third guide block, the large-visual-field-range lens is installed on the first guide block, and the high-definition camera is installed on the supporting block. The information of the sample to be detected is acquired through the large-visual-field-range lens and the high-definition camera, each motor is adjusted, the sample to be detected is automatically moved and then photographed for size measurement, and the detection efficiency of the sample can be improved.
Description
Technical Field
The invention relates to the field of measuring instruments, in particular to an image measuring instrument and a measuring method capable of automatically adjusting the position of a sample to be measured.
Background
In the machining process of mechanical parts, whether the machined parts meet the standard or not and whether deviation exists between the machined parts and the design or not are the most critical step before the parts are put into use. For the detection of the standard of the parts, the traditional measuring means is a manual measuring mode such as a caliper, a micrometer and the like, but the mode can only be used for simply and manually measuring the length, the width, the height, the inner diameter, the outer diameter, the depth and other simple sizes, and the information such as the hole distance, the hole position and the like is difficult to measure.
Measuring tools such as a tool microscope and an image measuring instrument which are relatively modern need to have higher magnification times when measuring and using the measuring tools, so that the field range is inevitably small, the center of the field range from the sample to be measured to a lens needs to be manually adjusted during measurement, the detection efficiency is low, and batch detection cannot be carried out. When detecting different samples, because the sight is aimed at and is had the error, focal length when needing frequent regulation to measure for detection efficiency is low, and these detection means can not satisfy mechanical parts processing's measurement requirement and measurement efficiency on the whole.
Disclosure of Invention
The invention aims to provide an image measuring instrument and a measuring method capable of automatically adjusting the position of a sample to be measured, and aims to solve the problem that the existing measuring instrument needs to manually adjust the position of the sample to cause reduction of measuring efficiency.
In order to achieve the purpose, the invention provides an image measuring instrument capable of automatically adjusting the position of a sample to be measured, which comprises an XY axis control assembly, a Z axis control assembly, a large visual field range lens, a high-definition camera and a motor controller, wherein the Z axis control assembly comprises a supporting seat, a first lead screw motor, a first guide block and a supporting block, the first lead screw motor is fixedly connected with the supporting seat and positioned on one side of the supporting seat, the first guide block is in threaded connection with a lead screw of the first lead screw motor and is in sliding connection with the supporting seat, and the supporting block is fixedly connected with the first guide block and is positioned on one side of the first guide block; the XY axis control component comprises a base, a middle base, a top base, a second lead screw motor, a third lead screw motor, a second guide block, a third guide block and transparent glass, the base is fixedly connected with the supporting base and positioned on one side of the first guide block, the second lead screw motor is fixedly connected with the base and positioned on one side of the base, the middle base is in threaded connection with a lead screw of the second lead screw motor through the second guide block and is in sliding connection with the base, the third lead screw motor is fixedly connected with the middle base and is positioned on one side of the middle base, the top base is in threaded connection with a lead screw of the third lead screw motor through the third guide block and is in sliding connection with the middle base and is positioned on one side of the middle base away from the base, and the transparent glass is fixedly connected with the top base, the high-definition camera is fixedly connected with the supporting block and is positioned on one side of the supporting block close to the top seat, and the motor controller is electrically connected with the first lead screw motor, the second lead screw motor and the third lead screw motor.
The Z-axis control assembly further comprises an anti-slip pad, wherein the anti-slip pad is fixedly connected with the supporting seat and is positioned on one side, far away from the base, of the supporting seat.
The Z-axis control assembly further comprises a limiting piece, wherein the limiting piece is fixedly connected with the supporting seat and is positioned on one side, close to the first guide block, of the supporting seat.
Wherein, high definition digtal camera includes telecentric mirror head and CCD camera, telecentric mirror head with supporting shoe fixed connection to be located the supporting shoe is close to one side of footstock, the CCD camera with telecentric mirror head fixed connection, and be located telecentric mirror head keeps away from one side of footstock.
The Z-axis control assembly further comprises a bottom illuminator, and the bottom illuminator is fixedly connected with the supporting seat and is positioned between the base and the supporting seat.
The Z-axis control assembly further comprises a top illuminator, and the top illuminator is fixedly connected with the supporting block and is positioned on one side, close to the top seat, of the supporting block.
In another aspect, the present invention provides an image measuring method capable of automatically adjusting the position of a sample to be measured, including:
placing a sample to be detected on the top seat;
acquiring first image data in a field of view in real time through a large-field-of-view-range lens;
establishing a Cartesian coordinate system in a field of view based on the first image data, extracting a characteristic value of a sample to be detected, and calculating the current coordinate of the sample to be detected;
based on the current coordinates, moving the second lead screw motor and the third lead screw motor, and moving the object to be detected to the range of the high-definition camera view field;
acquiring second image data in the field of view in real time based on the high-definition camera;
moving a second screw rod motor and a third screw rod motor based on a Cartesian coordinate system and second image data to enable a sample to be detected to be located in the center of a view field range;
acquiring the ambiguity of a sample to be detected in an image, and controlling a first screw rod motor to adjust the height of a high-definition camera according to the ambiguity index of the sample to be detected so as to enable the image to be clear;
and acquiring a clear image and calculating the size data of the sample to be measured, judging whether the sample to be measured accords with the label according to the imported size label, marking the unqualified part, and giving a measurement result report.
Wherein, based on current coordinate, remove second lead screw motor and third lead screw motor, the concrete step of article that will await measuring moving to high-definition camera visual field within range is:
acquiring a characteristic value of a sample to be detected and detecting a central coordinate point of the sample;
if the value of the coordinate X is larger than 0, controlling a second screw rod motor to move the top seat to the X-axis negative direction, and if the value of the coordinate X is smaller than 0, moving the top seat to an X-axis square;
if the coordinate Y value is larger than 0, the third screw motor is controlled to move the top seat to the Y-axis negative direction, and if the X value is smaller than 0, the top seat moves to the Y-axis square.
According to the image measuring instrument and the image measuring method capable of automatically adjusting the position of the sample to be measured, the first lead screw motor is fixedly connected with the supporting seat, the first lead screw motor can drive the first guide block to move up and down by the aid of threaded connection of the first guide block and a lead screw of the first lead screw motor, and the supporting block is fixedly connected with the first guide block and can move up and down along with the first guide block; the base is fixedly connected with the supporting seat, the second lead screw motor is fixedly connected with the base, and the middle seat is in threaded connection with a lead screw of the second lead screw motor, so that the middle seat can slide relative to the base by rotating the second lead screw motor under the support of the base; the third screw motor is fixedly connected with the middle seat, and the top seat is in threaded connection with a screw of the third screw motor through the third guide block and is in sliding connection with the middle seat, so that the top seat can be driven to slide relative to the middle seat by the rotation of the third screw motor, and the position in the Y direction can be adjusted; the large-visual-field-range lens is fixedly connected with the first guide block and is used for roughly positioning a sample to be detected; the high-definition camera is fixedly connected with the supporting block and used for accurately adjusting the position of the sample to be measured and photographing again to measure the size. Through big visual field scope camera lens with high definition digtal camera acquires the sample information that awaits measuring and adjusts each motor automatically to automatically move the sample that awaits measuring and then shoot and carry out size measurement, can further improve the detection efficiency of sample, reduce the subjective factor influence that manual measurement brought, high-efficient accurate measurement sample whether accords with design standard and analytical error, thereby solve current measuring apparatu and need the problem that manual adjustment sample position leads to measurement of efficiency to reduce.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an image measuring apparatus capable of automatically adjusting the position of a sample to be measured according to the present invention;
FIG. 2 is an exploded view of the XY-axis control assembly of the present invention;
FIG. 3 is a flow chart of a method of measuring a sample to be measured using the image measuring instrument according to the present invention;
fig. 4 is a flowchart of moving the second lead screw motor and the third lead screw motor to move the object to be measured into the field of view of the high-definition camera based on the current coordinates.
The camera comprises a 1-XY axis control assembly, a 2-Z axis control assembly, a 3-large visual field range lens, a 4-high definition camera, a 5-motor controller, a 11-base, a 12-middle base, a 13-top base, a 14-second lead screw motor, a 15-third lead screw motor, a 16-second guide block, a 17-third guide block, 18-transparent glass, a 21-support base, a 22-first lead screw motor, a 23-first guide block, a 24-support block, a 25-bottom illuminator, a 26-top illuminator, a 27-anti-skid pad, a 28-limiting piece, a 41-telecentric lens and a 42-CCD camera.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 and 2, the present invention provides an image measuring apparatus capable of automatically adjusting the position of a sample to be measured, including:
the device comprises an XY axis control component 1, a Z axis control component 2, a large-visual-field-range lens 3, a high-definition camera 4 and a motor controller 5, wherein the Z axis control component 2 comprises a supporting seat 21, a first lead screw motor 22, a first guide block 23 and a supporting block 24, the first lead screw motor 22 is fixedly connected with the supporting seat 21 and is positioned on one side of the supporting seat 21, the first guide block 23 is in threaded connection with a lead screw of the first lead screw motor 22 and is in sliding connection with the supporting seat 21, and the supporting block 24 is fixedly connected with the first guide block 23 and is positioned on one side of the first guide block 23; the XY axis control component 1 comprises a base 11, a middle base 12, a top base 13, a second lead screw motor 14, a third lead screw motor 15, a second guide block 16, a third guide block 17 and transparent glass 18, wherein the base 11 is fixedly connected with a support base 21 and is positioned on one side of a first guide block 23, the second lead screw motor 14 is fixedly connected with the base 11 and is positioned on one side of the base 11, the middle base 12 is in threaded connection with a lead screw of the second lead screw motor 14 through the second guide block 16 and is in sliding connection with the base 11, the third lead screw motor 15 is fixedly connected with the middle base 12 and is positioned on one side of the middle base 12, the top base 13 is in threaded connection with a lead screw of the third lead screw motor 15 through the third guide block 17 and is in sliding connection with the middle base 12 and is positioned on one side of the middle base 12 far away from the base 11, the transparent glass 18 is fixedly connected with the top base 13 and penetrates through the top base 13, the large-visual-field-range lens 3 is fixedly connected with the first guide block 23 and is positioned on one side, close to the top base 13, of the first guide block 23, the high-definition camera 4 is fixedly connected with the support block 24 and is positioned on one side, close to the top base 13, of the support block 24, and the motor controller 5 is electrically connected with the first lead screw motor 22, the second lead screw motor 14 and the third lead screw motor 15.
In this embodiment, the Z-axis control assembly 2 includes a supporting seat 21, a first lead screw motor 22, a first guiding block 23 and a supporting block 24, the first lead screw motor 22 is fixedly connected to the supporting seat 21 and located on one side of the supporting seat 21, the first guiding block 23 is in threaded connection with a lead screw of the first lead screw motor 22 and is slidably connected to the supporting seat 21, so that the first lead screw motor 22 can drive the first guiding block 23 to move up and down, the supporting block 24 is fixedly connected to the first guiding block 23 and located on one side of the first guiding block 23 so that the supporting block 24 can move up and down along with the first guiding block 23 and can be installed with a lens; the XY axis control component 1 comprises a base 11, a middle base 12, a top base 13, a second lead screw motor 14, a third lead screw motor 15, a second guide block 16, a third guide block 17 and transparent glass 18, wherein the base 11 is fixedly connected with the support base 21 and is positioned at one side of the first guide block 23, the second lead screw motor 14 is fixedly connected with the base 11 and is positioned at one side of the base 11, the middle base 12 is in threaded connection with a lead screw of the second lead screw motor 14 through the second guide block 16 and is in sliding connection with the base 11, so that under the support of the base 11, the middle base 12 can slide relative to the base 11 to adjust the position in the X direction by rotating the second lead screw motor 14; the third screw motor 15 is fixedly connected with the middle base 12 and is located on one side of the middle base 12, the top base 13 is in threaded connection with a screw of the third screw motor 15 through the third guide block 17, is in sliding connection with the middle base 12, and is located on one side of the middle base 12 away from the base 11, so that the third screw motor 15 rotates to drive the top base 13 to slide relative to the middle base 12, and the position in the Y direction can be adjusted; the transparent glass 18 is fixedly connected with the top seat 13 and penetrates through the top seat 13, and light can enter from the outside through the transparent glass 18 to increase the illumination brightness; the large-visual-range lens 3 is fixedly connected with the first guide block 23, the model of the large-visual-range lens 3 is FL-BC1220-9M, and the lens can keep high resolution at the peripheral part, so that a plurality of objects can be inspected at one time, a larger range can be inspected in detail, and the large-visual-range lens is used for roughly positioning a sample to be detected; the high-definition camera 4 is fixedly connected with the supporting block 24 and is positioned on one side, close to the top seat 13, of the supporting block 24, the model of the high-definition camera 4 is N10-W02 and is used for accurately adjusting the position of a sample to be measured and photographing again to measure the size, and the motor controller consists of an embedded microprocessor and a computer host or an industrial personal computer device and can provide a better system environment for image processing and measurement result report generation. The motor controller 5 is electrically connected to the first lead screw motor 22, the second lead screw motor 14 and the third lead screw motor 15 to control the motors to rotate. Through big visual field scope camera lens 3 with high definition digtal camera 4 acquires the sample information that awaits measuring and adjusts each motor automatically to automatically move the sample that awaits measuring and then shoot and carry out size measurement, can further improve the detection efficiency of sample, reduce the subjective factor influence that manual measurement brought, high-efficient accurate measurement sample whether accords with design standard and analysis error, thereby solve the problem that current measuring apparatu needs manual adjustment sample position to lead to measurement of efficiency to reduce.
Further, high definition digtal camera 4 includes telecentric lens 41 and CCD camera 42, telecentric lens 41 with supporting shoe 24 fixed connection, and be located the supporting shoe 24 is close to one side of footstock 13, CCD camera 42 with telecentric lens 41 fixed connection, and be located telecentric lens 41 keeps away from one side of footstock 13.
In this embodiment, the model of the CCD camera is N10-W02, the model of the telecentric lens is HR0565D, and the telecentric lens 41 can have a larger depth of field, can focus the sample to be measured well within the depth of field range, and has a larger magnification, and can accurately measure the detail size of the sample to be measured.
Further, the Z-axis control assembly 2 further comprises a bottom illuminator 25, wherein the bottom illuminator 25 is fixedly connected to the support base 21 and is located between the base 11 and the support base 21.
In this embodiment, the bottom illuminator 25 is a green parallel light source, and may be an FC-200mm light tube of square inch technology, and the light direction of the parallel light source is not changed and is almost not attenuated, so as to provide a better illumination environment for the high-definition camera 4 to measure the profile of the sample to be measured.
Further, the Z-axis control assembly 2 further includes a top illuminator 26, and the top illuminator 26 is fixedly connected to the supporting block 24 and is located on a side of the supporting block 24 close to the telecentric lens 41.
In this embodiment, the top illuminator 26 is a white ring light source capable of providing illumination to the sample to be tested from multiple angles, and the model can be selected from FRL 5428-29. The device can reduce the influence of shadow brought by a single-side light source on the measurement effect, can provide a better illumination environment for the high-definition camera 4 to measure the detail size of the sample to be measured, and can also provide a good illumination environment for the large-visual-field-range lens 3 unit to extract the characteristics of the sample to be measured and adjust the position of the sample to be measured.
Further, the Z-axis control assembly 2 further includes a non-slip pad 27, and the non-slip pad 27 is fixedly connected to the supporting seat 21 and is located on one side of the supporting seat 21 away from the base 11.
In the present embodiment, the non-slip pad 27 is used to increase the friction force between the support seat 21 and the placing plane, so that the placing can be more stable.
Further, the Z-axis control assembly 2 further includes a limiting piece 28, and the limiting piece 28 is fixedly connected to the supporting seat 21 and is located on one side of the supporting seat 21 close to the first guide block 23.
In the present embodiment, when the first lead screw motor 22 controls the high definition camera 4 to search for definition, the focal length may be blurred all the time, and the first guide block 23 may move towards the top base 13 and may collide with the top base 13 to be damaged, so that the movement range of the first guide block 23 is limited by the limiting piece 28, and the measurement instrument is protected from being damaged.
In a second aspect, referring to fig. 3, the present invention provides an image measuring method capable of automatically adjusting a position of a sample to be measured, including:
s101, placing a sample to be detected on the top seat 13;
s102, acquiring first image data in a field of view in real time through the large-field-of-view-range lens 3;
the top base 13 is continuously photographed by the wide-field-of-view lens 3 and the related graphic information is acquired.
S103, establishing a Cartesian coordinate system in a field of view based on the first image data, extracting a characteristic value of the sample to be detected, and calculating the current coordinate of the sample to be detected;
after the image measuring instrument is installed, a Cartesian coordinate system is established by default by setting the lens center of the high-definition camera 4 as the origin of coordinates to grid the plane of the top seat 13, and then the current coordinates of the sample to be measured are confirmed according to the first image data.
S104, moving the second lead screw motor 14 and the third lead screw motor 15 based on the current coordinate, and moving the object to be detected to the range of the field of view of the high-definition camera;
referring to fig. 4, the specific steps are:
s201, acquiring a characteristic value of a sample to be detected and detecting a central coordinate point of the sample;
s202, if the coordinate X value is larger than 0, controlling the second screw rod motor 14 to move the top seat 13 to the X-axis negative direction, and if the X value is smaller than 0, moving the top seat to the X-axis square;
and S203, if the coordinate Y value is greater than 0, controlling the third screw motor 15 to move the top seat 13 to the Y-axis negative direction, and if the Y value is less than 0, moving the top seat to the Y-axis square.
S105, acquiring second image data in the field of view in real time based on the high-definition camera 4;
the high-definition camera 4 is used for uninterruptedly photographing the sample to be measured so as to obtain second image data, and the resolution ratio of the image data is higher than that of the first image data, so that the later-stage size measurement is facilitated.
S106, moving the second screw rod motor 14 and the third screw rod motor 15 based on the Cartesian coordinate system and the second image data to enable the sample to be detected to be located in the center of the field range;
the process can repeat steps S201 to S203, so as to place the sample to be measured in the center of the high-definition camera 4 based on the high-resolution image for size measurement.
S107, acquiring the ambiguity of a sample to be detected in an image, and controlling a first screw rod motor to adjust the height of a high-definition camera 4 according to the ambiguity index of the sample to be detected so as to enable the image to be clear;
the ambiguity can be calculated by using algorithms such as Brenner gradient function, Tenengrad gradient function and the like, then the first lead screw motor 22 is moved up and down to compare the ambiguity, the image is moved to a place with smaller ambiguity, and when the ambiguity is smaller than a set value, the image is considered to be clear and the movement is stopped.
S108, acquiring the clear image, calculating the size data of the sample to be measured, judging whether the sample to be measured accords with the label according to the imported size label, marking the unqualified part, and giving a measurement result report.
A calibration parameter is preset for the distance between the plane of the top seat 13 and the first guide block 23 by a calibration method, then dimension data of a sample to be measured can be obtained by photographing based on the calibration parameter, then the dimension data can be compared with dimension labels to judge whether the sample is qualified or not, meanwhile, unqualified positions are marked, and finally, a measurement result report can be given based on a preset format.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An image measuring instrument capable of automatically adjusting the position of a sample to be measured,
the X-axis and Y-axis control device comprises an XY-axis control assembly, a Z-axis control assembly, a large-visual-field-range lens, a high-definition camera and a motor controller, wherein the Z-axis control assembly comprises a supporting seat, a first lead screw motor, a first guide block and a supporting block, the first lead screw motor is fixedly connected with the supporting seat and is positioned on one side of the supporting seat, the first guide block is in threaded connection with a lead screw of the first lead screw motor and is in sliding connection with the supporting seat, and the supporting block is fixedly connected with the first guide block and is positioned on one side of the first guide block; the XY axis control component comprises a base, a middle base, a top base, a second lead screw motor, a third lead screw motor, a second guide block, a third guide block and transparent glass, the base is fixedly connected with the supporting base and positioned on one side of the first guide block, the second lead screw motor is fixedly connected with the base and positioned on one side of the base, the middle base is in threaded connection with a lead screw of the second lead screw motor through the second guide block and is in sliding connection with the base, the third lead screw motor is fixedly connected with the middle base and is positioned on one side of the middle base, the top base is in threaded connection with a lead screw of the third lead screw motor through the third guide block and is in sliding connection with the middle base and is positioned on one side of the middle base away from the base, and the transparent glass is fixedly connected with the top base, the high-definition camera is fixedly connected with the supporting block and is positioned on one side of the supporting block close to the top seat, and the motor controller is electrically connected with the first lead screw motor, the second lead screw motor and the third lead screw motor.
2. The image measuring apparatus capable of automatically adjusting the position of the sample to be measured according to claim 1,
the high definition digtal camera includes telecentric mirror head and CCD camera, telecentric mirror head with supporting shoe fixed connection to be located the supporting shoe is close to one side of footstock, the CCD camera with telecentric mirror head fixed connection, and be located telecentric mirror head keeps away from one side of footstock.
3. The image measuring apparatus capable of automatically adjusting the position of the sample to be measured according to claim 1,
the Z-axis control assembly further comprises an anti-slip pad, wherein the anti-slip pad is fixedly connected with the supporting seat and is positioned on one side, far away from the base, of the supporting seat.
4. The image measuring apparatus capable of automatically adjusting the position of the sample to be measured according to claim 3,
the Z-axis control assembly further comprises a limiting piece, wherein the limiting piece is fixedly connected with the supporting seat and is positioned on one side, close to the first guide block, of the supporting seat.
5. The image measuring apparatus capable of automatically adjusting the position of the sample to be measured according to claim 4,
the Z-axis control assembly further comprises a bottom illuminator, and the bottom illuminator is fixedly connected with the supporting seat and is positioned between the base and the supporting seat.
6. The image measuring apparatus capable of automatically adjusting the position of the sample to be measured according to claim 5,
the Z-axis control assembly further comprises a top illuminator, and the top illuminator is fixedly connected with the supporting block and is positioned on one side, close to the telecentric lens, of the supporting block.
7. An image measuring method capable of automatically adjusting the position of a sample to be measured comprises the following steps:
placing a sample to be detected on the top seat;
acquiring first image data in a field of view in real time through a large-field-of-view-range lens;
establishing a Cartesian coordinate system in a field of view based on the first image data, extracting a characteristic value of a sample to be detected, and calculating the current coordinate of the sample to be detected;
based on the current coordinates, moving the second lead screw motor and the third lead screw motor, and moving the object to be detected to the range of the high-definition camera view field;
acquiring second image data in the field of view in real time based on the high-definition camera;
moving a second screw rod motor and a third screw rod motor based on a Cartesian coordinate system and second image data to enable a sample to be detected to be located in the center of a view field range;
acquiring the ambiguity of a sample to be detected in an image, and controlling a first screw rod motor to adjust the height of a high-definition camera according to the ambiguity index of the sample to be detected so as to enable the image to be clear;
and acquiring a clear image, calculating the size data of the sample to be measured, judging whether the sample to be measured accords with the label according to the imported size label, marking the unqualified part, and giving a measurement result report.
8. The image measuring method capable of automatically adjusting the position of a sample to be measured according to claim 7,
the specific steps of moving the object to be measured to the field range of the high-definition camera based on the current coordinate by moving the second lead screw motor and the third lead screw motor are as follows:
acquiring a characteristic value of a sample to be detected and detecting a central coordinate point of the sample;
if the value of the coordinate X is larger than 0, controlling a second screw rod motor to move the top seat to the X-axis negative direction, and if the value of the coordinate X is smaller than 0, moving the top seat to the X-axis square;
if the Y value of the coordinate is greater than 0, the third screw motor is controlled to move the top seat towards the Y-axis negative direction, and if the Y value is less than 0, the top seat moves towards the Y-axis square.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199120A (en) * | 2020-09-17 | 2022-03-18 | 自然资源实物地质资料中心 | Arbitrary rock core sample image acquisition fixing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114199120A (en) * | 2020-09-17 | 2022-03-18 | 自然资源实物地质资料中心 | Arbitrary rock core sample image acquisition fixing device |
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