CN111043987A - Concrete test piece parameter measuring device and method based on vision - Google Patents
Concrete test piece parameter measuring device and method based on vision Download PDFInfo
- Publication number
- CN111043987A CN111043987A CN202010025670.4A CN202010025670A CN111043987A CN 111043987 A CN111043987 A CN 111043987A CN 202010025670 A CN202010025670 A CN 202010025670A CN 111043987 A CN111043987 A CN 111043987A
- Authority
- CN
- China
- Prior art keywords
- test piece
- push rod
- rod mechanism
- conveyor belt
- sides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a concrete test piece parameter measuring device based on vision, which is characterized by comprising a bracket, a conveying belt for conveying a test piece into the bracket, a line laser projector for measuring flatness, a rotary push rod mechanism, a camera for acquiring an image of the test piece and an overturning push rod mechanism, wherein the conveying belt is used for conveying the test piece into the bracket; two conveying belts are arranged and symmetrically distributed on two sides inside the bracket; the rotary push rod mechanism is arranged below a gap between the two conveyor belts and is used for lifting a test piece on the conveyor belt above the rotary push rod mechanism or rotating the test piece by a certain angle after lifting the test piece; the two groups of overturning push rod mechanisms are symmetrically arranged on two sides of the bracket and are used for righting the test piece or overturning the test piece; the line laser projector and the camera are both mounted on the support. The measuring device has a simple structure, improves the measuring efficiency, reduces the manual participation, and improves the measuring precision and the automation level in the aspect of measuring operation of the test piece.
Description
Technical Field
The invention relates to a device and a method for measuring parameters of a cubic concrete test piece, in particular to a device and a method for measuring six-side dimensions and flatness of a test piece based on vision.
Background
The concrete structure is one of the most widely applied structural forms at home and abroad, and the surface of the concrete structure cannot be absolutely flat when the concrete structure is processed or produced into a concrete building material. The roughness of the concrete surface is a main influence parameter of the performance of the bonding surface, so that the high-precision measurement of the roughness of the concrete surface has very important significance on the performance research and engineering quality evaluation of the concrete interface. The currently common interface roughness evaluation uses the average depth as an evaluation index. In practice, a concrete test piece is taken for flatness test, and the requirements of the concrete test piece in the national standard of ordinary concrete mechanical property test method standard are as follows: the flatness tolerance of the pressure-bearing face of the test piece should not exceed 0.0005d (d is a side length).
At present, the measuring device and the measuring method of the common concrete sample in the civil engineering field have low measuring precision, low automation level and low operation complexity and efficiency. The high-precision electronic roughness measuring instrument in the market is mainly used in the field of machining, the testing method is sliding on the surface, the high-precision electronic roughness measuring instrument is mainly suitable for scratch type testing, and concrete test pieces with rough surfaces randomly distributed in the field of civil engineering are not suitable for use. With the development of science and technology, the application of vision technology in the field of building engineering is more and more extensive, so that it is necessary to design a new measuring device or measuring method suitable for concrete samples.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the concrete test piece parameter measuring device and method based on vision are provided, and are used for solving the problems that in the prior art, the measuring device and method of a common concrete test piece in the civil engineering field are low in measuring precision, low in automation level and low in operation complexity and efficiency.
In order to achieve the technical effects, the invention adopts the technical scheme that:
a concrete test piece parameter measuring device based on vision is characterized by comprising a support, a conveyor belt for conveying a test piece into the support, a line laser projector for measuring flatness, a rotary push rod mechanism, a camera for acquiring an image of the test piece and an overturning push rod mechanism; two conveying belts are arranged and symmetrically distributed on two sides inside the bracket; the rotary push rod mechanism is arranged below a gap between the two conveyor belts and is used for lifting a test piece on the conveyor belt above the rotary push rod mechanism or rotating the test piece by a certain angle after lifting the test piece; the two groups of overturning push rod mechanisms are symmetrically arranged on two sides of the support and are positioned above the outer sides of the two conveyor belts, and the overturning push rod mechanisms are used for righting the test piece or overturning the test piece; the line laser projector and the camera are both mounted on the support.
Furthermore, the rotating push rod mechanism is provided with a lifting assembly, and the lifting assembly is provided with a vertically upward lifting push rod and a horizontal supporting plate fixedly arranged at the top of the lifting push rod; the turnover push rod mechanism is provided with a clamping assembly, the clamping assembly is provided with a horizontally-mounted clamping push rod and a vertical clamping plate arranged at the front end of the clamping push rod, and the vertical clamping plate is correspondingly positioned right above the side edges of the two conveying belts.
Further, the camera is equipped with three groups, and wherein two sets of cameras are installed in the support both sides, and are located and press from both sides between tight push rod and the conveyer belt, and the third group of camera is installed at the support top, and three groups of cameras are used for gathering the image of the both sides face and the top surface of test piece respectively.
Furthermore, the line laser projectors are provided with three groups, wherein two groups of the line laser projectors are vertically arranged on the inner wall of the upright post at the rear end of the support, and the third group of the line laser projectors are transversely arranged on the inner wall of the cross beam at the rear end of the support.
Further, the rotary push rod mechanism is further provided with a first rotary motor, and the lifting assembly is fixedly installed at the front end of an output shaft of the first rotary motor through a first installation seat.
Furthermore, the turnover push rod mechanism is further provided with a second rotating motor, and the clamping assembly is fixedly installed at the front end of an output shaft of the second rotating motor through a second installation seat.
A concrete test piece parameter measuring method based on vision comprises the following measuring steps:
step 11a, in each image, accurately extracting a test piece area by using a visual algorithm to obtain all points on the four-side outline of the test piece;
step 11b, respectively fitting four sides into straight lines;
step 11c, eliminating contour points with large deviation with straight lines by using a probability statistical method;
step 11d, respectively calculating the distance between the residual contour points of the corresponding straight lines and the opposite lines, and solving the average value as the overall dimension of the test piece;
step 15a, analyzing the fuzzy degree of each frame of image, and acquiring an image with the best definition for subsequent analysis;
step 15b, segmenting a laser line area from the test piece area, calculating the skeleton outline of the laser line area, and acquiring point coordinates on the skeleton;
step 15c, fitting an ideal projection laser straight line;
step 15d, calculating deviation values of all bending part straight line points a relative to corresponding points b on the ideal projection straight line according to the characteristic that the laser straight line in the image bends at the fluctuating position, namely the flatness of the fluctuating position;
and step 15e, the measured and calculated data correspond to the test piece surface number and are stored in a local or server database for subsequent checking and analysis.
Further, the concrete test piece parameter measuring method based on vision also comprises the following measuring steps:
step 16, repeating the step 3;
step 17, operating the conveyor belt to move the test piece to a centering position;
step 18, rotating the push rod mechanism to lift the test piece;
step 19, rotating the push rod mechanism again to rotate the lifted test piece for 90 degrees on the horizontal plane;
step 20, turning over the push rod mechanisms on two sides to clamp the test piece;
step 21, resetting the rotary push rod mechanism;
step 22, turning the push rod mechanisms on the two sides again to turn the test piece 180 degrees on the vertical surface;
step 23, rotating the push rod mechanism to act to lift the test piece;
24, resetting the turnover push rod mechanisms on the two sides;
step 25, slowly resetting the rotary push rod mechanism, and replaying the test piece to the conveyor belt;
26, repeating the steps 10 to 15, namely acquiring data information of the other three sides;
step 27, analyzing and checking result data through a local or background server to obtain two surfaces with higher flatness;
step 28, combining the rotary push rod mechanism and the two-side turnover push rod mechanisms, reasonably placing the test piece, and entering the next station for operation;
and 29, operating the conveyor belt to convey the test piece to the next station.
Compared with the prior art, the invention has the beneficial effects that:
1. the measuring device has simple and convenient structure construction and lower cost;
2. the measuring device has less manual participation, higher automation level and high measuring efficiency;
3. the non-contact measurement method combined with vision has small abrasion to the device and high measurement precision;
4. through the effective combination of laser and vision, the flatness measurement result of the test piece is more accurate and credible;
5. the device can be matched with devices such as a pressure test device and the like to realize further improvement of a measuring system.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. In addition, in view of the fact that the existing camera is very mature in technology of visual identification and measurement combined with a computer or a background server, the measurement method, algorithm and equipment structure are basically the same, and only application scenes are different, so that the structure and the like (including the connection relation between the camera and a local or background server and the like) of the camera and a computer visual measurement system connected with the camera are not described in detail.
Drawings
FIG. 1 is a schematic structural diagram of a concrete specimen parameter measuring device based on vision according to the present invention.
Fig. 2 is a schematic diagram of the measurement of the outline dimension of the test piece of the present invention.
FIG. 3 is a schematic view of the flatness measurement of a test piece according to the present invention.
The reference numbers and corresponding names of the components in the figures are:
1. a support, 2, a conveyor belt, 3, a line laser projector,
4. test piece, 5. rotating push rod mechanism, 51. horizontal supporting plate,
6. camera, 7, turning push rod mechanism, 71, vertical splint,
8. left side fitting edge, 9 left side contour points, 10 right side fitting edge,
11. right side contour point, 12 leveling surface laser line segment, 13 laser straight line,
14. the laser line segment with the bending relief surface and 15. the relief surface interface.
Detailed Description
As shown in fig. 1, a vision-based concrete specimen parameter measuring device includes a support 1, a conveyor belt 2 for conveying a specimen 4 into the support 1, a line laser projector 3 for measuring flatness, a rotary push rod mechanism 5 for lifting and horizontally rotating the specimen 4, a camera 6 for capturing an image of the specimen 4, and an inverting push rod mechanism 7 for clamping and inverting the specimen 4. Wherein, the two conveyor belts 2 are symmetrically distributed at two sides inside the bracket 1. The rotary push rod mechanism 5 is positioned at the lower end in the bracket 1 and is positioned at the gap between the two conveyor belts 2. The rotary push rod mechanism 5 is provided with a rotating assembly and a lifting assembly, wherein the rotating assembly is a first rotating motor, and the first rotating motor is fixedly installed at the bottom end inside the rack (not shown in the figure) through a first motor base. The lifting assembly may be a pneumatic or electric or hydraulic assembly, but is not limited to a pneumatic or electric or hydraulic assembly (e.g., a cylinder, a hydraulic cylinder, an electric push rod, etc.). The lifting assembly is provided with a vertically upward lifting push rod and a horizontal supporting plate 51 fixedly arranged at the top of the lifting push rod. Wherein, lift the piston rod that the push rod can be cylinder, pneumatic cylinder etc. also can be electric putter's push rod, lift the subassembly and pass through first mount pad fixed mounting at the output shaft front end of a rotating electrical machines. The lifting assembly is used for driving the lifting push rod and the horizontal supporting plate on the lifting push rod to move upwards to lift a test piece on the conveying belt above the lifting push rod, and the first rotating motor is used for driving the lifting assembly to rotate 90 degrees integrally and the test piece on the lifting push rod to rotate on the horizontal plane. The turnover push rod mechanisms 7 are arranged in two groups, the two groups of turnover push rod mechanisms 7 are symmetrically arranged on two sides of the support 1, and the turnover push rod mechanisms 7 are provided with turnover assemblies and clamping assemblies. Wherein, the turning component is a second rotating motor, and the second rotating motor is fixed outside the bracket 1 through a second motor base or fixed outside the bracket 1 in other forms (not shown in the figure). The clamping assembly may be a pneumatic or electric or hydraulic assembly, but is not limited to pneumatic or electric or hydraulic assemblies (e.g., air cylinders, hydraulic cylinders, electric rams, etc.). The clamping assembly is provided with a horizontally mounted clamping push rod and a vertical clamping plate 71 mounted at the front end of the clamping push rod. The clamping push rod can be a piston rod of an air cylinder, a hydraulic cylinder and the like, and can also be a push rod of an electric push rod. The vertical clamping plate is positioned in the rack and correspondingly positioned above the outer edges of the two conveyor belts 2, and the clamping assembly is fixedly installed at the front end of the output shaft of the second rotating motor through the second installation seat. The clamping assembly is used for driving the clamping push rod and the vertical clamping plates at the front end of the clamping push rod to move inwards to the support, the test piece is clamped and aligned through the vertical clamping plates on the two sides, and the second rotating motor is used for driving the whole clamping assembly and the test piece clamped by the clamping assembly to turn over 180 degrees on a vertical surface. The line laser projector 3 and the camera 6 are both mounted on the support 1. Wherein, camera 6 is equipped with three groups, and wherein two sets of cameras 6 are installed between the upset push rod and the conveyer belt 2 of support 1 both sides, and third group camera 6 is installed at support 1 top, and three groups of cameras 6 are used for gathering the image of the both sides face and the top surface of test piece 4 respectively. The line laser projectors 3 are provided with three groups, wherein two groups of the line laser projectors 3 are vertically arranged on the inner wall of the upright post at the rear end of the bracket 1, and the third group of the line laser projectors 3 are transversely arranged on the inner wall of the cross beam at the rear end of the bracket 1. The line laser projector 3 can be installed according to a certain projection angle according to factors such as the size of a test piece, the camera 6 can be selected according to actual measurement precision requirements, the setting of the running speed of the conveyor belt 2 can be combined with the image acquisition frame rate of the camera 6, and the conditions that the acquired image has no smear phenomenon and the image information is complete are met.
As shown in fig. 1 to 3, a method for measuring parameters of a concrete sample based on vision comprises the following measuring steps:
step 11a, in each image, accurately extracting a test piece area by using a visual algorithm, and obtaining all contour points (such as a left contour point 9 and a right contour point 11 shown in fig. 2) on the four-side contour of the test piece;
step 11b, respectively fitting four sides into straight lines (such as a left fitting side 8 and a right fitting side 10 shown in FIG. 2);
step 11c, eliminating contour points with large deviation with straight lines by using a probability statistical method;
step 11d, respectively calculating the distances (d1, d2, d3... d1 ', d 2', d 3..) between the residual contour points of the corresponding straight lines and the opposite lines, and calculating an average value to be used as the external dimension of the test piece;
step 15a, analyzing the fuzzy degree of each frame of image, and acquiring an image with the best definition for subsequent analysis;
step 15b, segmenting a laser line area from the test piece area, calculating the skeleton outline of the laser line area, and acquiring point coordinates on the skeleton;
step 15c, fitting an ideal projection laser straight line; a laser line 13 when the line laser incident angle i is 80 degrees in fig. 3 in this embodiment;
step 15d, calculating deviation values of all bending part straight line points a (intersection points of the laser straight lines 13 and the laser line segments 14 bent from the relief surface) relative to ideal projection straight line corresponding points b (intersection points of the laser straight lines 13 and the laser line segments 12 of the flat surface) on the same relief surface interface 15 according to the characteristic that the laser straight lines 13 in the image are bent at the relief position, and obtaining the flatness of the relief position;
step 15e, the measured and calculated data correspond to the test piece surface number and are stored in a local or server database for subsequent checking and analysis;
step 16, repeating the step 3;
step 17, operating the conveyor belt to move the test piece to a centering position;
step 18, extending a lifting push rod of the rotary push rod mechanism to lift the test piece;
step 19, rotating a first rotating motor of the push rod mechanism to act to drive the lifting assembly and a test piece on the lifting assembly to rotate 90 degrees on a horizontal plane;
step 20, the clamping push rods of the two-side turnover push rod mechanisms extend inwards, and the two vertical clamping plates clamp the test piece;
step 21, resetting the rotary push rod mechanism;
step 22, simultaneously operating the second rotating motors of the two-side overturning push rod mechanisms to drive the test piece clamped by the clamping assembly to overturn 180 degrees on a vertical surface;
step 23, extending a lifting push rod of the rotary push rod mechanism, and driving the horizontal supporting plate to the bottom position of the test piece to lift the test piece;
24, resetting the turnover push rod mechanisms on the two sides;
step 25, resetting the lifting assembly, and replaying the test piece to the conveyor belt;
26, repeating the steps 10 to 15, namely acquiring data information of the other three sides;
step 27, analyzing and checking result data through a local or background server to obtain two surfaces with higher flatness;
step 28, combining the rotary push rod mechanism and the two-side turnover push rod mechanisms, reasonably placing the test piece, and entering the next station for operation;
and 29, operating the conveyor belt to convey the test piece to the next station.
The measuring device has simple and convenient structure construction and lower cost; the test piece is conveyed by the conveying belt, the surface of the test piece is adjusted by combining the rotary push rod mechanism and the turnover push rod mechanism, the image of the test piece is collected by the camera to measure the appearance size of the test piece, and the flatness is measured by combining line laser projection, so that the measurement efficiency is greatly improved, the manual participation is reduced, and the measurement precision and the automation level are improved.
The present invention is not limited to the above-described embodiments, and various modifications made without inventive step from the above-described concept will fall within the scope of the present invention for those skilled in the art.
Claims (8)
1. A concrete test piece parameter measuring device based on vision is characterized by comprising a support, a conveyor belt for conveying a test piece into the support, a line laser projector for measuring flatness, a rotary push rod mechanism, a camera for acquiring an image of the test piece and an overturning push rod mechanism; two conveying belts are arranged and symmetrically distributed on two sides inside the bracket; the rotary push rod mechanism is arranged below a gap between the two conveyor belts and is used for lifting a test piece on the conveyor belt above the rotary push rod mechanism or rotating the test piece by a certain angle after lifting the test piece; the two groups of overturning push rod mechanisms are symmetrically arranged on two sides of the support and are positioned above the outer sides of the two conveyor belts, and the overturning push rod mechanisms are used for righting the test piece or overturning the test piece; the line laser projector and the camera are both mounted on the support.
2. The vision-based concrete specimen parameter measuring device according to claim 1, characterized in that the rotating push rod mechanism is provided with a lifting assembly, the lifting assembly is provided with a lifting push rod which is vertically upward and a horizontal supporting plate fixedly arranged on the top of the lifting push rod; the turnover push rod mechanism is provided with a clamping assembly, the clamping assembly is provided with a horizontally-mounted clamping push rod and a vertical clamping plate arranged at the front end of the clamping push rod, and the vertical clamping plate is correspondingly positioned right above the side edges of the two conveying belts.
3. The vision-based concrete specimen parameter measuring device of claim 2, wherein the cameras are three groups, two groups of cameras are arranged on two sides of the bracket and located between the clamping push rod and the conveyor belt, the third group of cameras are arranged on the top of the bracket, and the three groups of cameras are respectively used for acquiring images of two side surfaces and the top surface of the specimen.
4. The vision-based concrete specimen parameter measuring device of claim 2, wherein the line laser projectors are provided with three groups, two groups of which are vertically installed on the inner wall of the upright post at the rear end of the bracket, and a third group of line laser projectors are transversely installed on the inner wall of the cross beam at the rear end of the bracket.
5. The vision-based concrete specimen parameter measuring device according to claim 2, wherein the rotating push rod mechanism is further provided with a first rotating motor, and the lifting assembly is fixedly mounted at the front end of an output shaft of the first rotating motor through a first mounting seat.
6. The vision-based concrete specimen parameter measuring device according to claim 2, wherein the overturning push rod mechanism is further provided with a second rotating motor, and the clamping assembly is fixedly mounted at the front end of an output shaft of the second rotating motor through a second mounting seat.
7. A concrete sample parameter measuring method based on vision is characterized by comprising the following measuring steps:
step 1, turning on a camera;
step 2, placing the test piece on a conveyor belt, and operating the conveyor belt;
step 3, the top camera processes and analyzes the acquired image of the test piece in real time, and judges the position of the test piece in real time; in the judgment process, accurately dividing the area of the test piece by using a region growing algorithm through the test piece image acquired by the camera, and calculating the center of the area; setting an accurate threshold range for judging whether the center of the test piece reaches a specified position;
step 4, stopping the conveyor belt after the test piece reaches the designated position;
step 5, rotating the push rod mechanisms to work, and pushing the test piece between the two turnover push rod mechanisms;
step 6, turning over the push rod mechanisms on two sides to work simultaneously, and turning over the push rod mechanisms to align the test piece;
step 7, resetting the turnover push rod mechanisms on the two sides;
step 8, resetting the rotary push rod mechanism, and putting the test piece back to the conveyor belt;
step 9, repeating the step 3, and if the test piece still has deviation, operating the conveyor belt to finely adjust the position of the test piece;
step 10, respectively acquiring images of three surfaces of a test piece by three cameras;
step 11, sending the images collected by the three cameras to a local or background server for corresponding analysis and processing; the method specifically comprises the following steps:
step 11a, in each image, accurately extracting a test piece area by using a visual algorithm to obtain all points on the four-side outline of the test piece;
step 11b, respectively fitting four sides into straight lines;
step 11c, eliminating contour points with large deviation with straight lines by using a probability statistical method;
step 11d, respectively calculating the distance between the residual contour points of the corresponding straight lines and the opposite lines, and solving the average value as the overall dimension of the test piece;
step 12, moving the conveyor belt to a specified position in the direction of approaching the line laser projector;
step 13, starting the line laser projectors in three directions;
step 14, operating the conveyor belt far-off-line laser projector, and simultaneously acquiring images in real time by three cameras;
step 15, performing image processing analysis on local or background service; the method specifically comprises the following steps:
step 15a, analyzing the fuzzy degree of each frame of image, and acquiring an image with the best definition for subsequent analysis;
step 15b, segmenting a laser line area from the test piece area, calculating the skeleton outline of the laser line area, and acquiring point coordinates on the skeleton;
step 15c, fitting an ideal projection laser straight line (as shown in figure 3);
step 15d, calculating deviation values of all bending part straight line points a relative to corresponding points b on the ideal projection straight line according to the characteristic that the laser straight line in the image bends at the fluctuating position, namely the flatness of the fluctuating position;
and step 15e, the measured and calculated data correspond to the test piece surface number and are stored in a local or server database for subsequent checking and analysis.
8. The vision-based test piece parameter measurement method of claim 7, further comprising the following measurement steps:
step 16, repeating the step 3;
step 17, operating the conveyor belt to move the test piece to a centering position;
step 18, rotating the push rod mechanism to lift the test piece;
step 19, rotating the push rod mechanism again to rotate the lifted test piece for 90 degrees on the horizontal plane;
step 20, turning over the push rod mechanisms on two sides to clamp the test piece;
step 21, resetting the rotary push rod mechanism;
step 22, turning the push rod mechanisms on the two sides again to turn the test piece 180 degrees on the vertical surface;
step 23, rotating the push rod mechanism to act to lift the test piece;
24, resetting the turnover push rod mechanisms on the two sides;
step 25, slowly resetting the rotary push rod mechanism, and replaying the test piece to the conveyor belt;
26, repeating the steps 10 to 15, namely acquiring data information of the other three sides;
step 27, analyzing and checking result data through a local or background server to obtain two surfaces with higher flatness;
step 28, combining the rotary push rod mechanism and the two-side turnover push rod mechanisms, reasonably placing the test piece, and entering the next station for operation;
and 29, operating the conveyor belt to convey the test piece to the next station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025670.4A CN111043987A (en) | 2020-01-10 | 2020-01-10 | Concrete test piece parameter measuring device and method based on vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025670.4A CN111043987A (en) | 2020-01-10 | 2020-01-10 | Concrete test piece parameter measuring device and method based on vision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043987A true CN111043987A (en) | 2020-04-21 |
Family
ID=70244292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010025670.4A Pending CN111043987A (en) | 2020-01-10 | 2020-01-10 | Concrete test piece parameter measuring device and method based on vision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043987A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884032A (en) * | 2021-09-24 | 2022-01-04 | 中建西部建设西南有限公司 | Three-dimensional laser detection equipment and method for flatness of concrete cube test block |
-
2020
- 2020-01-10 CN CN202010025670.4A patent/CN111043987A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884032A (en) * | 2021-09-24 | 2022-01-04 | 中建西部建设西南有限公司 | Three-dimensional laser detection equipment and method for flatness of concrete cube test block |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1568419A (en) | Method and device for analysing the surface of a substrate | |
| CN111879241A (en) | Mobile phone battery size measuring method based on machine vision | |
| CN109211110A (en) | A kind of flat-type workpiece size detection system and method based on machine vision | |
| CN108489394A (en) | A kind of large-scale sheet metal works almost T-stable automatic detection device and method | |
| CN104677782A (en) | Machine vision online detection system and method for electric connector shell | |
| CN110966956A (en) | Binocular vision-based three-dimensional detection device and method | |
| CN111485475A (en) | Pavement pit recognition method and device | |
| CN109813718A (en) | A kind of LED chip module defect detecting device and method | |
| CN112489042A (en) | Metal product printing defect and surface damage detection method based on super-resolution reconstruction | |
| US11796483B2 (en) | Device for recognizing defects remaining in finished surface of product | |
| CN111043987A (en) | Concrete test piece parameter measuring device and method based on vision | |
| CN208042989U (en) | A kind of large-scale sheet metal works almost T-stable automatic detection device | |
| CN108759676B (en) | Checkerboard-based transmission case end face large-size form and position tolerance detection device and method | |
| CN110057555B (en) | Method for detecting flatness of line laser | |
| CN210952728U (en) | Concrete test piece parameter measurement device based on vision | |
| CN104748684B (en) | Visual detection method and device for crankshaft shoulder back chipping | |
| CN213543477U (en) | Power battery pole piece coating uniformity online metering test system | |
| CN113421310A (en) | Method for realizing cross-field high-precision measurement based on motion position error compensation technology of grating ruler positioning | |
| CN111624006A (en) | Tire monitoring device based on colored three-color complementary coding stripe laser projection | |
| CN113532292B (en) | Online size detection system for plates and working method thereof | |
| CN115615992A (en) | Method for measuring size and detecting defects of refractory bricks | |
| CN115375636A (en) | Full-size detection method and equipment for power battery module | |
| CN110823139B (en) | Measuring method of multi-angle reflector | |
| CN204462038U (en) | A kind of electric connector housing machine vision on-line detecting system | |
| CN218157599U (en) | Detection device and automatic optical detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |