CN109520440A - The measuring device and method of stretch reducing machine pass - Google Patents
The measuring device and method of stretch reducing machine pass Download PDFInfo
- Publication number
- CN109520440A CN109520440A CN201710848110.7A CN201710848110A CN109520440A CN 109520440 A CN109520440 A CN 109520440A CN 201710848110 A CN201710848110 A CN 201710848110A CN 109520440 A CN109520440 A CN 109520440A
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- China
- Prior art keywords
- pass
- reducing machine
- stretch reducing
- machine pass
- photographic unit
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Classifications
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
-
- 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
-
- 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
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
Abstract
The invention discloses a kind of stretch reducing machine pass measuring device and method.Wherein, the measuring device of stretch reducing machine pass includes: photographic unit, and photographic unit is set to the side of stretch reducing machine to be detected；Rotating mechanism, photographic unit are fixed on rotating mechanism, and rotating mechanism can drive photographic unit to rotate；Control mechanism, control mechanism and photographic unit and rotating mechanism communication connection.The measurement method of stretch reducing machine pass includes: the topography of the circumferentially continuous acquisition stretch reducing machine pass along stretch reducing machine pass；It determines the boundary profile in each topography, and determines the pass image of stretch reducing machine pass according to each boundary profile；The pass information of stretch reducing machine pass is determined according to pass image, and according to pass information and presupposed information, determines whether stretch reducing machine pass is qualified.The measuring device and method of stretch reducing machine pass of the invention can automatically detect the pass information of stretch reducing machine pass, so that it is determined that whether stretch reducing machine pass is qualified, have the advantages that precision is high, high-efficient.
Description
Technical field
The present invention relates to steel quality of production detection technique field more particularly to a kind of measuring devices of stretch reducing machine pass
And method.
Background technique
Last one of Plastic Forming process that stretch reducing process is produced as seamless hot-finished steel tube, not only determines steel
The outer-diameter accuracy of pipe, and the wall thickness of steel pipe is also had an important influence, and the inner and outer surfaces defect main source of steel pipe
In stretch reducing process.Therefore, it plays an important role to the seamless pipe dimensional accuracy delivered goods with rolled.
Stretch reducing process generally uses stretch-reducing mill to carry out operation.Currently, in the optimization control of stretch-reducing mill technique
In system, other than Optimizing Process Parameters, it is also necessary to optimize the hole molded dimension of stretch-reducing mill.In the prior art, tension is subtracted
The hole molded dimension of diameter machine is generally measured using manual method, method particularly includes: added with 3 inside micrometer manual measurements
Diameter at groover rot diameter and roll gap after work leads to measurement for the hole molded dimension of stretch-reducing mill there are manual measurements and is solid
There is error.
For in the prior art without a kind of automatic, measuring device of high-acruracy survey stretch reducing machine pass and method
Problem, the present invention provides the measurements of a kind of automatic, pass of high-acruracy survey tension speed reducer and the stretch reducing machine pass of size
Device and method.
Summary of the invention
To solve the above problems, the present invention provides the measuring device and method of a kind of stretch reducing machine pass, machine can be based on
Vision detection technology, the automatic pass information for detecting stretch reducing machine pass have essence so that it is determined that whether stretch reducing machine pass is qualified
Degree height, high-efficient advantage.
To achieve the above object, the measuring device of a kind of stretch reducing machine pass of the invention, comprising:
Photographic unit, the photographic unit are set to the side of stretch reducing machine to be detected；
Rotating mechanism, the photographic unit are fixed on the rotating mechanism, and the rotating mechanism can drive the shooting
Mechanism rotation；
Control mechanism, the control mechanism and the photographic unit and the rotating mechanism communication connection, the control machine
Structure controls the rotating mechanism rotation, and drives the photographic unit along the stretch reducing machine pass of the stretch reducing machine to be detected
Circumferentially rotate one week, while the control mechanism controls the part of stretch reducing machine pass described in the photographic unit continuous acquisition
Image, the control mechanism determine the pass information of the stretch reducing machine pass according to each topography, and according to institute
It states pass information and presupposed information determines whether the stretch reducing machine pass is qualified.
It further, further include light source mechanism, the light source mechanism is set to the stretch reducing machine far from the photographic unit
Side, provide photographic light sources for the photographic unit.
Further, the light source mechanism includes illuminating source and light source bracket, and the illuminating source is horizontally disposed, and
And can be movably set on the light source bracket along the vertical direction, the illuminating source transmitting is parallel to the stretch reducing machine hole
The light beam of the center line of type simultaneously makes the light beam that the stretch reducing machine pass be completely covered.
Further, the photographic unit includes array image sensor.
Further, the rotating mechanism includes bracket, rotating electric machine, turntable and pivoted arm, and the rotating electric machine is fixed on
On the bracket, the centerline of the motor shaft centre line of the rotating electric machine and the stretch reducing machine pass on same straight line,
The motor shaft is fixedly connected on the center of the turntable, and the pivoted arm is set on the turntable and can be along the turntable
Move radially, the photographic unit is fixed on the pivoted arm, pivoted arm described in the driven by rotary disc and the photographic unit
It is rotated synchronously by shaft of the center line of the stretch reducing machine pass.
The present invention also provides a kind of measurement methods of stretch reducing machine pass, which comprises the steps of:
S1, along stretch reducing machine pass the circumferentially continuous acquisition stretch reducing machine pass topography；
S2, it determines boundary profile in each topography, and determines described according to each boundary profile
Subtract the pass image of machine pass；
S3, the pass information that the stretch reducing machine pass is determined according to the pass image, and according to the pass information and
Presupposed information determines whether the stretch reducing machine pass is qualified.
Further, the method for the topography is acquired are as follows: be uniformly arranged along the circumferential direction of the stretch reducing machine pass multiple
Collection point, and based on each collection point along the circumferentially continuous acquisition topography of the stretch reducing machine pass.
Further, the method for the pass image of the stretch reducing machine pass is determined according to each boundary profile are as follows: root
The physical location that the corresponding camber line midpoint of the boundary profile is determined according to the boundary profile, by each physical location point
It is not mapped in coordinate system, to obtain the pass image.
Further, the pass information includes that the fitting of the stretch reducing machine pass is round and the stretch reducing machine pass
Radius.
Further, the fitting circle of the stretch reducing machine pass and the radius of the stretch reducing machine pass are according to the pass
The coordinate value of each physical location in image is calculated by least square method and is obtained.
The measuring device and method of stretch reducing machine pass of the invention are moved one week by photographic unit along stretch reducing machine pass
And continuous acquisition topography, pass image is determined according to collected each topography, to finally obtain pass letter
Breath, and determine whether stretch reducing machine pass is qualified according to pass information and presupposed information, so as to complete for stretch reducing machine pass
Measurement automatic detection, artificial detection can be replaced, brought with high measurement accuracy and working efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the measuring device of the stretch reducing machine pass of the embodiment of the present invention；
Fig. 2 is that schematic diagram is closed in the photographic unit of embodiment described in Fig. 1 and the position of stretch reducing machine pass；
Fig. 3 is the flow chart of the measurement method of the stretch reducing machine pass of the embodiment of the present invention；
Fig. 4 is the pass image schematic diagram of the embodiment of the present invention；
Fig. 5 is topography's schematic diagram of the embodiment of the present invention.
Specific embodiment
In the following, being further described in conjunction with attached drawing to structure and working principle etc. of the invention.
Since the variation range of the diameter of stretch reducing machine pass is larger, it is difficult to obtain stretch reducing machine pass by single camera
General image allows to obtain general image, the relatively low situation of resolution ratio.But although imaging design cannot be simultaneously
When taking into account the whole imaging and resolution ratio of stretch reducing machine pass, but a part on the boundary of stretch reducing machine pass being imaged,
It can be carried out high-resolution imaging.Accordingly, it is considered to the topography of stretch reducing machine pass first be acquired, collected to these
Topography is integrated and is analyzed, and the pass information of entire stretch reducing machine pass is finally obtained.
Based on above-mentioned mentality of designing, as shown in Figure 1, a kind of measuring device of stretch reducing machine pass 4 of the embodiment of the present invention,
Including photographic unit 3, light source mechanism, rotating mechanism and control mechanism.
In horizontal direction, photographic unit 3 is set to the side of stretch reducing machine to the center line of the pass of stretch reducing machine to be detected,
Light source mechanism is set to the other side of stretch reducing machine, and photographic unit 3 and light source mechanism is made to constitute the imaging mode of backlight imaging.Its
In, photographic unit 3 includes array image sensor, and array image sensor is arranged relative to stretch reducing machine pass 4, for acquiring
The image of stretch reducing machine pass 4.The embodiment of the present invention, as filming apparatus, can not only be scanned simultaneously using array image sensor
Measure the circular contour of stretch reducing machine pass 4, moreover it is possible to survey to the point of interface position of each circular arc of composition stretch reducing machine pass 4
Amount and monitoring.Light source mechanism issues the light beam for being parallel to the center line of stretch reducing machine pass 4 to stretch reducing machine pass 4, is photographic unit
3 i.e. array image sensor provides photographic light sources.
Specifically, light source mechanism includes illuminating source 5 and light source bracket 7, and illuminating source 5 is horizontally disposed, and can be along perpendicular
Histogram, can be according to the height of the height adjustment illuminating source 5 of stretch reducing machine pass 4 to being movably set on light source bracket 7.
Illuminating source 5 emits light beam and makes light beam that stretch reducing machine pass 4 be completely covered, so that acquiring the process of image in photographic unit 3
In, without moving illuminating source 5 again, i.e. the moment guarantees that photographic unit 3 acquires the bat at the position of the stretch reducing machine pass 4 of figure phase
The intensity meet demand for taking the photograph light source, guarantees the clarity of acquired image.
In embodiments of the present invention, it in order to enable photographic unit 3 to be moved along the circumferential direction of stretch reducing machine pass 4, will clap
It takes the photograph mechanism 3 to be fixed on rotating mechanism, makes rotating mechanism that photographic unit 3 can be driven to rotate.Specifically, rotating mechanism can wrap
Include bracket 6, rotating electric machine 1 and turntable 2.Rotating electric machine 1 and turntable 2 are set on bracket 6, the motor axis center of rotating electric machine 1
The centerline of line and stretch reducing machine pass 4 is on same straight line, to guarantee the plane of rotation and stretch reducing machine pass of rotating electric machine 1
4 section is parallel.The motor shaft of rotating electric machine 1 is fixedly connected on the center of turntable 2 and the motor shaft of rotating electric machine 1 is vertical
In turntable 2, rotate turntable 2 by shaft of its axis.Turntable 2 is equipped with pivoted arm 8, and pivoted arm 8 can be along the radial direction of turntable 2
It is movably set on turntable 2, photographic unit 3 is fixed on pivoted arm 8, may be located remotely from photographic unit 3 or close to turntable 2
Axial-movement, can be according to the position of the diameter Rule of judgment photographic unit 3 of stretch reducing machine pass 4, so as to adjust shooting
The radius of turn of mechanism 3.Turntable 2 can drive pivoted arm 8 synchronous as shaft with photographic unit 3 using the center line of stretch reducing machine pass 4
Rotation.Specifically, the motor shaft of being rotated by rotating electric machine 1 of photographic unit 3, rotating electric machine 1 rotates one week, completes
Scanning to the section of pass of stretch reducing machine pass 4.Motor shaft, which rotates a circle, records multiple topographies, every topography pair
Answer the boundary profile of the pass of a specified angle.
The control mechanism and photographic unit 3 and rotating mechanism communication connection, control mechanism of the embodiment of the present invention can control
Rotating mechanism rotation, and the circumferentially rotating one week along stretch reducing machine pass 4 of photographic unit 3 is driven, while control mechanism control is clapped
Take the photograph the topography of 3 continuous acquisition stretch reducing machine pass 4 of mechanism.Control mechanism can determine stretch reducing machine according to each topography
The pass information of pass 4, and determine whether stretch reducing machine pass 4 is qualified according to pass information and presupposed information.In addition to this, it controls
Mechanism processed can also control pivoted arm 8 and drive the moving radially along turntable 2 on turntable 2 of photographic unit 3, and control light source branch
Frame 7 drives illuminating source 5 to move along the vertical direction.
The measurement method and detecting step of the measuring device of the stretch reducing machine pass 4 of the embodiment of the present invention are as follows:
Stretch reducing machine to be detected is first placed on designated position, and adjusts the height of turntable 2, makes the center of stretch reducing machine pass 4
With rotation overlapping of axles.Then, to the design size of control mechanism input pass, the camera lens of photographic unit 3 is adjusted by pivoted arm 8
Radius of turn, the pass boundary of stretch reducing machine pass 4 can be covered after rotating the pickup area of photographic unit 3.At this point, can
To light illuminating source 5, and photographic unit 3 is controlled by control mechanism and is rotated under the drive of rotating electric machine 1, and is synchronous
Topography is acquired, the rotation angle drawn game portion image of control mechanism while records photographing mechanism 3 makes topography and shooting
The rotation angle of mechanism 3 corresponds.Finally, determining the boundary profile in each topography, and carries out Image Mosaic and obtain
Pass image, it is defeated to complete to measure according to the fitting center of circle of pass image calculating stretch reducing machine pass 4, minimum and maximum radius
The simulation profile of measurement result and stretch reducing machine pass 4 out.
As shown in figure 3, a kind of measurement method of stretch reducing machine pass 4 of the embodiment of the present invention, includes the following steps:
S1, along stretch reducing machine pass 4 circumferentially continuous acquisition stretch reducing machine pass 4 topography.
Specifically, the method for the topography is acquired are as follows: be uniformly arranged multiple acquisitions along the circumferential direction of stretch reducing machine pass 4
Point, and based on each collection point along the circumferentially continuous acquisition topography of stretch reducing machine pass 4.Since the embodiment of the present invention is adopted
The acquisition of topography is carried out to stretch reducing machine pass 4 with filming apparatus, filming apparatus can be with the center line of stretch reducing machine pass 4
It, therefore, can be in the boundary side of stretch reducing machine pass 4 for shaft, and using the boundary of stretch reducing machine pass 4 as track moving in rotation
It is evenly arranged 360 collection points upwards, and the collection point is corresponded to the center of the image acquisition region of photographic unit 3 and is carried out
The acquisition of topography.When collection point there are 360, photographic unit 3 is equivalent to relative to every 1 ° of the rotation of shaft just acquisition one
Topography.It should be noted that collection point can be set on the boundary of stretch reducing machine pass 4, also can be set in boundary
Outside interior or boundary, as long as can guarantee to be capable of forming after each collection point is connected with camber line round and photographic unit 3
Center corresponds to the topography that the segment boundary of the stretch reducing machine pass 4 at this can be collected when the acquisition of each collection point.
S2, it determines boundary profile in each topography, and stretch reducing machine pass 4 is determined according to each boundary profile
Pass image.
Specifically, the method for the pass image of stretch reducing machine pass 4 is determined according to each boundary profile are as follows: take turns according to boundary
Exterior feature determines the physical location at the corresponding camber line midpoint of boundary profile, and each physical location is respectively mapped in coordinate system, thus
Obtain pass image.After having collected topography according to 360 collection points, in each topography is detected
The profile for subtracting the boundary of machine pass 4 can determine the camber line midpoint of this section of profile according to the profile, thus according to shooting at this time
Angle that mechanism 3 rotates etc. determines the specific location at the camber line midpoint, and each is rotated to the camber line midpoint of angle collection point
It is projected on respectively using the rotation center of photographic unit 3 to form the pass image such as Fig. 4 in the coordinate system of origin.
Firstly, be mapped to using every topography using the center of topography as origin, with horizontal and vertical direction be X,
The image coordinate system I of Y-direction1It is interior, calculate the position P ' (x, y) of the corresponding arc centers of topography's inner boundary profile.
Specifically as shown in figure 5, scanning boundary, i.e. gray scale record the coordinate by black to white trip point along the vertical direction in the picture
P1 (x, y), and the coordinate origin of the point is transformed to picture centre P ' (x, y).
Known image height and width are denoted as H and W, then coordinate transform calculates are as follows:
P'x=P1x-W/2
P'y=P1y-H/2
Wherein P 'xAnd P 'yFor X, Y-direction coordinate, H and W are picture altitude and width, P1xAnd P1yFor X, Y of boundary point P1
Direction coordinate.
Then, rectangular coordinate system I is established in the section established perpendicular to the center of stretch reducing machine pass 4 to be detected2, right angle
Coordinate system I2It with horizontal and vertical direction is X, Y-direction using the intersection point of section and the rotation center of photographic unit 3 as origin.It will
Positioned at image coordinate system I1After interior P ' point is by selection and translation, it is mapped to rectangular coordinate system I2In, it handles in this way
After the position P ' of the corresponding arc centers of boundary profile in complete whole topography, i.e., in rectangular coordinate system I2In can obtain
Obtain coordinate points Pi(x, y), wherein i=0-360 °.
By P ' (P 'x, P 'y) be converted to Pi(Pix, Piy) calculation formula are as follows:
Wherein, R1 is image coordinate system I1In rectangular coordinate system I2Radius of turn；β is image coordinate system I1It is sat at right angle
Mark system I2Rotation angle.
S3, the pass information that stretch reducing machine pass 4 is determined according to pass image, and according to pass information and presupposed information, really
Whether qualified determine stretch reducing machine pass 4.Wherein, pass information includes the fitting circle and stretch reducing machine pass 4 of stretch reducing machine pass 4
Radius.The fitting circle of stretch reducing machine pass 4 and the radius of stretch reducing machine pass 4 are according to each physical location in pass image
Coordinate value is calculated by least square method and is obtained.
Specifically, according to coordinate points Pi(xi, yi) use least square method, it can calculate center of circle O and the rotation of fitting
Turn radius R.
By taking diameter is the measurement of the stretch reducing machine pass 4 of R as an example, center and the stretch reducing machine pass 4 of stretch reducing machine pass 4 are calculated
Radius.Firstly, stretch-reducing mill rack is placed into measurement position, then pass through parameter configuration for the rotation of photographic unit 3 half
Diameter is adjusted to R.Then, driving rotating electric machine 1 rotates, and since rotating electric machine 1 is furnished with high-precision encoder, can accurately remember
Record the angle of the motor shaft rotation of rotating electric machine 1.By set motor shaft start rotation position as 0 ° of position, and determination motor
When axis is 0 ° of position, the corresponding collection point position in the acquisition center of photographic unit 3, when motor shaft rotates, encoder generates pulse
Signal records angle, and triggers photographic unit 3 and acquire topography, with every 1 ° of rotation (and the every rotation of photographic unit 3 of motor shaft
1 °) acquisition one topography for, then motor shaft, which rotates a circle, can acquire 360 topographies.Every topography is all
It include the boundary profile in the rotation angle, the corresponding camber line midpoint of boundary profile can be used as the boundary of the rotation angle
Position determines the actual physical location of the boundary position, and the actual physical location of the boundary position of each topography is reflected
It is mapped to using rotary shaft in the coordinate system of origin, then to have 360 points in the coordinate system, it can constitute 360 points
Come the pass image described.Least square method is used according to the pass image, circle can be fitted, is subtracted to calculate and open
The radius of turn of the center of machine pass 4 and stretch reducing machine pass 4 obtains pass information, and calculated pass information can be with
It is compared with presupposed information, finally judges whether qualification is met the requirements for the pass of stretch reducing machine pass 4.
In conclusion the measuring device and method of the stretch reducing machine pass of the embodiment of the present invention, can pass through visual imaging skill
Art scans the boundary of stretch reducing machine pass, and is calculated according to scanning result and obtain pass information, can replace existing manual measurement
Method, and obtain higher precision and preferably measurement stability, it is ensured that the measurement accuracy of pass information is consistent with measurement
Property, it is of great significance for improving steel tube surface quality state and diameter of steel tube parameter.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that without departing from of the invention
On the basis of working principle, a variety of improvement can be made to the present invention, this is all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of measuring device of stretch reducing machine pass characterized by comprising
Photographic unit, the photographic unit are set to the side of stretch reducing machine to be detected；
Rotating mechanism, the photographic unit are fixed on the rotating mechanism, and the rotating mechanism can drive the photographic unit
Rotation；
Control mechanism, the control mechanism and the photographic unit and the rotating mechanism communication connection, the control mechanism control
The rotating mechanism rotation is made, and drives the photographic unit along the circumferential direction of the stretch reducing machine pass of the stretch reducing machine to be detected
Rotation one week, while the control mechanism controls the topography of stretch reducing machine pass described in the photographic unit continuous acquisition, institute
The pass information that control mechanism determines the stretch reducing machine pass according to each topography is stated, and according to the pass information
Determine whether the stretch reducing machine pass is qualified with presupposed information.
2. the measuring device of stretch reducing machine pass as described in claim 1, which is characterized in that it further include light source mechanism, the light
Source mechanism is set to side of the stretch reducing machine far from the photographic unit, provides photographic light sources for the photographic unit.
3. the measuring device of stretch reducing machine pass as claimed in claim 2, which is characterized in that the light source mechanism includes the light that shines
Source and light source bracket, the illuminating source is horizontally disposed, and can be movably set on the light source bracket along the vertical direction,
The illuminating source transmitting is parallel to the light beam of the center line of the stretch reducing machine pass and the light beam is made to be completely covered described
Subtract machine pass.
4. the measuring device of stretch reducing machine pass as described in claim 1, which is characterized in that the photographic unit includes the face system of battle formations
As sensor.
5. the measuring device of stretch reducing machine pass as claimed in claim 4, which is characterized in that the rotating mechanism include bracket,
Rotating electric machine, turntable and pivoted arm, the rotating electric machine are fixed on the bracket, the motor shaft centre line of the rotating electric machine with
For the centerline of the stretch reducing machine pass on same straight line, the motor shaft is fixedly connected on the center of the turntable, described
Pivoted arm be set on the turntable and can moving radially along the turntable, the photographic unit is fixed on the pivoted arm,
Pivoted arm described in the driven by rotary disc and the photographic unit are rotated synchronously by shaft of the center line of the stretch reducing machine pass.
6. a kind of measurement method of stretch reducing machine pass, which comprises the steps of:
S1, along stretch reducing machine pass the circumferentially continuous acquisition stretch reducing machine pass topography；
S2, it determines boundary profile in each topography, and the stretch reducing machine is determined according to each boundary profile
The pass image of pass；
S3, the pass information that the stretch reducing machine pass is determined according to the pass image, and according to the pass information and preset
Information determines whether the stretch reducing machine pass is qualified.
7. the measurement method of stretch reducing machine pass as claimed in claim 6, which is characterized in that the method for acquiring the topography
Are as follows: multiple collection points are uniformly arranged along the circumferential direction of the stretch reducing machine pass, and are subtracted based on each collection point along described
The circumferentially continuous acquisition topography of machine pass.
8. the measurement method of stretch reducing machine pass as claimed in claim 6, which is characterized in that true according to each boundary profile
The method of the pass image of the fixed stretch reducing machine pass are as follows: the corresponding camber line of the boundary profile is determined according to the boundary profile
Each physical location is respectively mapped in coordinate system by the physical location at midpoint, to obtain the pass image.
9. the measurement method of stretch reducing machine pass as claimed in claim 8, which is characterized in that the pass information includes described
Subtract the round radius with the stretch reducing machine pass of fitting of machine pass.
10. the measurement method of stretch reducing machine pass as claimed in claim 9, which is characterized in that the fitting of the stretch reducing machine pass
The radius of the round and described stretch reducing machine pass passes through minimum two according to the coordinate value of each physical location in the pass image
Multiplication, which calculates, to be obtained.
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| CN201710848110.7A CN109520440A (en) | 2017-09-19 | 2017-09-19 | The measuring device and method of stretch reducing machine pass |
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| CN115375693B (en) * | 2022-10-27 | 2023-02-10 | 浙江托普云农科技股份有限公司 | Method, system and device for detecting defects of probe of agricultural information acquisition sensor |
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