CN207472144U - A kind of steel straight ruler verification device based on image processing techniques - Google Patents

A kind of steel straight ruler verification device based on image processing techniques Download PDF

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Publication number
CN207472144U
CN207472144U CN201721727013.4U CN201721727013U CN207472144U CN 207472144 U CN207472144 U CN 207472144U CN 201721727013 U CN201721727013 U CN 201721727013U CN 207472144 U CN207472144 U CN 207472144U
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CN
China
Prior art keywords
camera
guide rail
image processing
straight
horizontal guide
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Expired - Fee Related
Application number
CN201721727013.4U
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Chinese (zh)
Inventor
胡平
雷霆
曾博才
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CHENGDU INSTITUTE OF METROLOGY SUPERVISION & VERIFICATION
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CHENGDU INSTITUTE OF METROLOGY SUPERVISION & VERIFICATION
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Priority to CN201721727013.4U priority Critical patent/CN207472144U/en
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Abstract

The utility model discloses a kind of steel straight ruler verification device based on image processing techniques, including marble detecting platform, which is characterized in that the marble detecting platform is provided with X to straight-line displacement mechanism, grating scale;The X includes X to horizontal guide rail, sliding block, Y-direction adjustment module, camera to straight-line displacement mechanism, wherein X is to the orbital direction referred to X to horizontal guide rail, the Y-direction refers to X to the direction of horizontal guide rail horizontal vertical, the grating scale is installed on marble detecting platform side, grating head is connected with the sliding block of X to straight-line displacement mechanism, it is moved together along X to horizontal guide rail with camera, the image information of straight steel ruler is obtained i.e. by the image of dipping end edge by camera, in mobile sliding block by the way of pulley, its stability can be effectively improved.

Description

A kind of steel straight ruler verification device based on image processing techniques
Technical field
The utility model is related to calibrating installations, and in particular to a kind of steel straight ruler verification device based on image processing techniques.
Background technology
Straight steel ruler is a kind of common length measuring device, is widely used in industrial and agricultural production and daily life, such as work Journey measurement, Area computing, workpiece size measurement etc..
Domestic existing steel straight ruler verification device is mainly by the verification table with adjusting plate, zero-bit regulating device, third Metal lines ruler and reading microscope composition.Specifically verification process is:By tested straight steel ruler (by dipping) and third metal lines Ruler (gauge) is individually placed on the adjustable-bed and main table top of steel straight ruler verification table, and adjusting lifting nut makes by the groove of dipping Face is in same plane, then adjust makes its strain line axis parallel with gauge ruler side by dipping with gauge, then by human eye It aims at by dipping end edge and adjusts fine-tuning nut and will (straight steel ruler end edge be aligned with gauge head end or end strain line by dipping end edge Alignment is the important link of steel straight ruler verification, and alignment result will bring subsequent arithmetic into and directly affect entire steel straight ruler verification precision), It finally moves reading microscope reading is estimated by human eye to different measurement point positions and obtain by the dipping error of indication.
In entire measurement process, straight steel ruler end edge alignment, error of indication data acquisition all estimates reading by human eye aiming entirely, easily Bring human error into, precision is low, and to operating personnel's skill requirement height, labor intensity is big.
Utility model content
The utility model to be solved unstable, steel straight ruler verification precision during steel straight ruler verification device calibrating in the prior art The problem of low, provides a kind of steel straight ruler verification device based on image processing techniques, and pulley increases the stability of device, should Used time is easy to implement end edge automatic aligning and the error of indication during steel straight ruler verification and reads automatically, effectively improves steel straight ruler verification Precision.
The utility model is achieved through the following technical solutions:
A kind of steel straight ruler verification device based on image processing techniques, including marble detecting platform, which is characterized in that institute It states marble detecting platform and is provided with X to straight-line displacement mechanism, grating scale;The X is led to straight-line displacement mechanism including X to level Rail, sliding block, Y-direction adjustment module, camera, wherein:The X is horizontally fixed on to horizontal guide rail on marble detecting platform, institute It states sliding block and is slidably connected the X on horizontal guide rail, the sliding block is internally provided with pulley, which contacts with X to horizontal guide rail;Institute It states Y-direction adjustment module and upper end of slide block is arranged in horizontal vertical direction to horizontal guide rail to X;The camera is arranged on Y-direction tune It saves in module;The grating scale is arranged on the side of marble detecting platform, and the grating head of the grating scale is connect with sliding block;Also Including host computer, the host computer includes image processing system, which is electrically connected with camera, at described image Reason system is used to receive the image information of camera shooting.Wherein X is to the orbital direction referred to X to horizontal guide rail, the Y-direction Refer to X to the direction of horizontal guide rail horizontal vertical, the grating scale is installed on marble detecting platform side, grating head and X It is connected to the sliding block of straight-line displacement mechanism, is moved together along X to horizontal guide rail with camera, straight steel ruler is obtained by camera Image information is i.e. by the image of dipping end edge.
In the prior art, the position of straight steel ruler end edge in the picture is calculated by image procossing, and recorded current Grating scale data measure starting point as corresponding, effectively prevent traditional straight steel ruler measuring device and are easily generated by human eye aiming alignment Error and the influence for bringing subsequent arithmetic into, improve measurement accuracy;It is acquired by camera, grating scale positioning, with straight steel ruler Error of graduation automatic identification algorithm substitutes traditional human eye and the pattern for reading the scale error of indication is estimated by reading microscope, automatically The straight steel ruler error of indication is calculated, effectively improves measurement accuracy, reduces labor intensity.But due to being filled in the prior art in calibrating Damping can be generated in the moving process put, precision is caused to reduce or hindered when dust causes calibrating installation to slide due to Plug, seriously affects detection data, reduces stability, so can effectively be improved in mobile sliding block by the way of pulley Its stability, more steady and smooth during mobile sliding block, so as to improve calibration accuracy.
Further, camera shooting head support is further included, one end of the camera shooting head support is connect with Y-direction adjustment module; The camera is connected on camera shooting head support.
Further, the Y-direction adjustment module is provided with vernier knob, which is used to adjust camera in Y side To movement;The sliding block is provided with knob.Pull the knob that camera is made to do straight line in the horizontal direction to horizontal guide rail along X Movement, adjusts the vernier knob of Y-direction adjustment module, and camera can carry out Y-direction and move horizontally.
Further, the marble detecting platform includes calibrating table top, by position step, described to be fixed on inspection by position step Determine the upper surface of table top, sides of the X to horizontal guide rail should be arranged on by position step, it is convenient positioned at the underface of the camera Place straight steel ruler.
The utility model compared with prior art, has the following advantages and advantages:
1st, a kind of steel straight ruler verification device based on image processing techniques of the utility model passes through image processing techniques and light The application of grid ruler, realizes straight steel ruler end edge position automatic aligning and the straight steel ruler error of graduation obtains automatically, avoids human eye reading The generation of number error, effectively increases straight steel ruler measurement accuracy, reduces labor intensity;
2nd, a kind of steel straight ruler verification device for mechanical based on image processing techniques of the utility model is simple in structure, stability High, installation operation is conveniently;
3rd, a kind of steel straight ruler verification device based on image processing techniques of the utility model is cost-effective to a certain extent, Increase economic benefit.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application Part does not form the restriction to the utility model embodiment.In the accompanying drawings:
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is the utility model electronic schematic diagram;
Fig. 3 is operated for the utility model and control flow schematic diagram.
The title of label and corresponding part in attached drawing:
1- marble detecting platforms, 101- calibrating table tops, 102- lean on position step, 2-X to straight-line displacement mechanism, 201-X to Horizontal guide rail, 202- sliding blocks, 203-Y shake hands to adjustment module, 204- camera shooting head supports, 205- cameras, 206-, 3- gratings Ruler.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.
Embodiment
As shown in Figure 1, 2, a kind of steel straight ruler verification device based on image processing techniques, including marble detecting platform 1, It is characterized in that, the marble detecting platform 1 is provided with X to straight-line displacement mechanism 2, grating scale 3;The X is to straight-line displacement Mechanism 2 includes X to horizontal guide rail 201, sliding block 202, Y-direction adjustment module 203, camera 205, wherein:The X is to horizontal guide rail 201 are horizontally fixed on marble detecting platform 1, and the sliding block 202 is slidably connected the X on horizontal guide rail 201, the sliding block 202 are internally provided with pulley, which contacts with X to horizontal guide rail 201;The Y-direction adjustment module 203 is to X to horizontal guide rail 201 202 upper end of sliding block is arranged in horizontal vertical direction;The camera 205 is arranged in Y-direction adjustment module 203;The grating Ruler 3 is arranged on the side of marble detecting platform 1, and the grating head of the grating scale 3 is connect with sliding block 202;Further include host computer, The host computer includes image processing system, which is electrically connected with camera 205, and described image processing system is used In the image information for receiving the shooting of camera 205.Wherein X is to the orbital direction referred to X to horizontal guide rail 201, the Y-direction Refer to X to the direction of 201 horizontal vertical of horizontal guide rail, the grating scale 3 is installed on 1 side of marble detecting platform, grating head It is connected with X to the sliding block 202 of straight-line displacement mechanism 2, is moved together along X to horizontal guide rail 201 with camera 205, pass through camera shooting First 205 obtain the image information of straight steel ruler i.e. by the image of dipping end edge.
In the prior art, the position of straight steel ruler end edge in the picture is calculated by image procossing, and recorded current 3 data of grating scale measure starting point as corresponding, effectively prevent traditional straight steel ruler measuring device and are easily produced by human eye aiming alignment Raw error and the influence for bringing subsequent arithmetic into, improve measurement accuracy;It is acquired by camera 205, grating scale 3 positions, and uses Straight steel ruler error of graduation automatic identification algorithm substitutes traditional human eye and the mould for reading the scale error of indication is estimated by reading microscope Formula is calculated automatically from the straight steel ruler error of indication, effectively improves measurement accuracy, reduces labor intensity.
But since damping can be generated in the moving process of calibrating installation in the prior art, cause precision reduce or by Block in dust when reasons cause calibrating installation to slide, seriously affect detection data, reduce stability, so using pulley Mode in mobile sliding block 202, can effectively improve its stability, more steady and smooth during slip.
Camera shooting head support 204 is further included, one end of the camera shooting head support 204 is connect with Y-direction adjustment module 203; The camera 205 is connected on camera shooting head support 204.
The Y-direction adjustment module 203 is provided with vernier knob, which is used to adjust camera 205 in the Y direction It is mobile;The sliding block 202 is provided with knob 206.Pull the knob 206 make camera 205 along X to horizontal guide rail 201 in water Square to moving in a straight line, the vernier knob of Y-direction adjustment module 203 is adjusted, camera 205 can carry out Y-direction and move horizontally.
The marble detecting platform 1 includes calibrating table top 101, by position step 102, described to be fixed on by position step 102 The upper surface of table top 101 is examined and determine, X should be arranged on to the side of horizontal guide rail 201 by position step 102, positioned at the camera 205 Underface, facilitate placement straight steel ruler.
The image processing system core of the host computer is straight steel ruler error of graduation automatic identification algorithm.Straight steel ruler scale misses In deviation measurement process, image processing program will read position by dipping end edge in the picture first, and record current raster head Reading, as the measurement starting point of straight steel ruler end edge, then dollying head 205, which arrives, measures position, reads by measurement ruler score line Position in the picture, and grating head reading is recorded, the offset of strain line in the picture is obtained, then tie with reference to pixel equivalent operation Grating head displacement distance is closed to calculate by dipping error of graduation value.
The measuring principle of image processing system is:
Straight steel ruler error of graduation recognizer mainly includes pixel calibration and two parts of error calculation.First, system journey Sequence will carry out pixel equivalent calibration using grating scale 3 to image, then by by dipping initial end side location of pixels and by dipping Target scale strain line location of pixels is poor and combination 205 displacement distance of camera (being obtained by grating scale 3) is calculated by dipping target Scale corresponds to the error of indication.
It should be the nominal value of the strain line and the difference of this strain line actual value that straight steel ruler, which corresponds to the strain line error of indication, and the point Strain line actual value subtracts the displacement for corresponding to the relatively initial strain line of strain line in the picture equal to 205 displacement distance of camera, so steel Ruler error of indication e should be equal to the nominal value l of tested strain line1Subtract tested strain line actual value l2
E=l1-l2=l1-(l3-(v2-v1)×b)
L in formula3It is 205 displacement distance of camera, b is the corresponding pixel equivalent of image, v1It is initial strain line position, v2It is Tested strain line position after the movement of camera 205.It is opposite by the inconvenience of dipping vertical range, institute since camera 205 is highly fixed With in verification process pixel equivalent b be constant.
As shown in figure 3, in the present embodiment, steel straight ruler verification device realizes that process includes the following steps:
A, marble detecting platform 1 will be lain against by dipping to examine and determine on table top 101, side is abutted by position step 102;
B, camera 205 is moved to by right over dipping initiating terminal side;
C, host computer image processing system is acquired and is recorded by dipping end edge start point data;
D, by right over camera movement 205 to target scale strain line, host computer image processing system is obtained by calculation Straight steel ruler error of indication data;
E, dollying head 205 arrives next measurement position, continues the operation of step D, until all the points position is measured.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced It changes, improve, should be included within the scope of protection of this utility model.

Claims (5)

1. a kind of steel straight ruler verification device based on image processing techniques, including marble detecting platform (1), which is characterized in that The marble detecting platform (1) is provided with X to straight-line displacement mechanism (2), grating scale (3);The X is to straight-line displacement mechanism (2) including X to horizontal guide rail (201), sliding block (202), Y-direction adjustment module (203), camera (205), wherein:
The X is horizontally fixed on to horizontal guide rail (201) on marble detecting platform (1), and the sliding block (202) is slidably connected this For X on horizontal guide rail (201), the sliding block (202) is internally provided with pulley, which contacts with X to horizontal guide rail (201);
The Y-direction adjustment module (203) is arranged on sliding block (202) upper end to horizontal guide rail (201) to X in horizontal vertical direction;
The camera (205) is arranged in Y-direction adjustment module (203), and the camera (205) is for shooting image information;
The grating scale (3) is arranged on the side of marble detecting platform (1), and the grating head and sliding block of the grating scale (3) (202) it connects;
Host computer is further included, the host computer includes image processing system, which is electrically connected with camera (205) It connects, described image processing system is used to receive the image information of camera (205) shooting.
2. a kind of steel straight ruler verification device based on image processing techniques according to claim 1, it is characterised in that:Also wrap Camera shooting head support (204) is included, one end of the camera shooting head support (204) is connect with Y-direction adjustment module (203);It is described to take the photograph As head (205) is connected on camera shooting head support (204).
3. a kind of steel straight ruler verification device based on image processing techniques according to claim 1, it is characterised in that:It is described Y-direction adjustment module (203) is provided with vernier knob, which is used to adjust the movement of camera (205) in the Y direction.
4. a kind of steel straight ruler verification device based on image processing techniques according to claim 1, it is characterised in that:It is described Sliding block (202) is provided with knob (206).
5. a kind of steel straight ruler verification device based on image processing techniques according to claim 1, it is characterised in that:It is described Marble detecting platform (1) including calibrating table top (101), by position step (102), it is described to be fixed on calibrating by position step (102) The upper surface of table top (101) should be arranged on X to the side of horizontal guide rail (201), positioned at the camera by position step (102) (205) underface.
CN201721727013.4U 2017-12-11 2017-12-11 A kind of steel straight ruler verification device based on image processing techniques Expired - Fee Related CN207472144U (en)

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Application Number Priority Date Filing Date Title
CN201721727013.4U CN207472144U (en) 2017-12-11 2017-12-11 A kind of steel straight ruler verification device based on image processing techniques

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109946641A (en) * 2019-04-30 2019-06-28 广东电网有限责任公司 A kind of electric energy meter detecting system and its calibrating unit are plugged into abnormal monitoring device
CN110388859A (en) * 2019-09-03 2019-10-29 宁波盛冰网络科技有限公司 Full-automatic linear scale calibrating installation
CN110530226A (en) * 2019-09-03 2019-12-03 宁波盛冰网络科技有限公司 Full-automatic linear scale calibration method
CN112033250A (en) * 2020-10-26 2020-12-04 湖南大学 Automatic calibrating device and calibrating method for steel ruler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109946641A (en) * 2019-04-30 2019-06-28 广东电网有限责任公司 A kind of electric energy meter detecting system and its calibrating unit are plugged into abnormal monitoring device
CN110388859A (en) * 2019-09-03 2019-10-29 宁波盛冰网络科技有限公司 Full-automatic linear scale calibrating installation
CN110530226A (en) * 2019-09-03 2019-12-03 宁波盛冰网络科技有限公司 Full-automatic linear scale calibration method
CN112033250A (en) * 2020-10-26 2020-12-04 湖南大学 Automatic calibrating device and calibrating method for steel ruler
CN112033250B (en) * 2020-10-26 2021-02-02 湖南大学 Automatic calibrating device and calibrating method for steel ruler

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Granted publication date: 20180608

Termination date: 20181211