CN117346838A - Digital measurement system and method for steel bar samples - Google Patents
Digital measurement system and method for steel bar samples Download PDFInfo
- Publication number
- CN117346838A CN117346838A CN202311344919.8A CN202311344919A CN117346838A CN 117346838 A CN117346838 A CN 117346838A CN 202311344919 A CN202311344919 A CN 202311344919A CN 117346838 A CN117346838 A CN 117346838A
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- Prior art keywords
- steel bar
- module
- steel
- processing module
- picture
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 172
- 239000010959 steel Substances 0.000 title claims abstract description 172
- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 16
- 238000005303 weighing Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000000691 measurement method Methods 0.000 claims abstract description 4
- 230000000007 visual effect Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 13
- 238000009864 tensile test Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 9
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a digital measurement system for a steel bar sample, which is characterized by comprising the following components: rotating the material rack; a weighing measurement module; a robot module; a vision acquisition module; a reinforcing steel bar stretching treatment module; and a software processing module. The invention further provides a digital measurement method for the steel bar sample, and the digital measurement system for the steel bar sample is adopted. The invention can realize the online measurement of the lengths and the weights of the reinforcing steel bars of a plurality of samples, can meet the detection requirement of the reinforcing steel bar stretching experiment, completes the modularized design, reduces the time waiting of each module for independent work, and obviously improves the detection efficiency.
Description
Technical Field
The invention relates to a steel bar sample digital measurement system and a steel bar sample digital measurement method based on the system, belonging to the field of steel bar experiment.
Background
At present, the detection of the apparent dimensions such as the length, the weight and the like of the steel bar is an important link in the digital management of the steel bar, and the link is required to weigh and length the steel bar sample, calculate the theoretical weight, calculate the weight deviation and judge whether the steel bar is qualified or not.
Disclosure of Invention
The invention aims to solve the technical problems: traditional measurement of length and weight of the steel bar is carried out at different stations, the measuring process is complex, the measuring precision is low, the automation degree is low, and then the subsequent steel bar stretching experiment is affected.
In order to solve the technical problem, the technical scheme of the invention provides a digital measurement system for a steel bar sample, which is characterized by comprising the following components:
the rotary material rack is used for placing the steel bars to be tested;
the weighing measurement module is used for weighing the weight of the broken steel bars;
the robot module is used for moving the steel bars between the rotary material frame and the steel bar stretching treatment module and between the steel bar stretching treatment module and the weighing measurement module;
the visual acquisition module is used for acquiring real-time images of the steel bars placed on the steel bar stretching processing module to obtain initial steel bar images, real-time steel bar images in the stretching test process and single-side polished images after the steel bars are broken, wherein the single-side polished images are images obtained after the broken steel bars are polished from the single side;
the steel bar stretching treatment module is used for carrying out a stretching test on the steel bars placed on the steel bar stretching treatment module;
a software processing module for: virtually marking the initial steel bar picture; in the tensile test process, real-time tracking is carried out on the virtual mark after the real-time picture of the steel bar is obtained in real time; and superposing the two unilateral polishing pictures to form a steel bar profile, identifying two ends of the steel bar profile to obtain two ends of the broken steel bar, and further calculating the elongation after the breaking and the total elongation of the steel bar based on the two ends of the broken steel bar.
Preferably, the visual acquisition module comprises a movable visual camera and a light source, wherein the left side and the right side of the reinforcement stretching processing module are respectively provided with a light source which is triggered to be turned on and off by independent external signals, and when a unilateral lighting picture is obtained, the light sources on the two sides are turned on successively, so that the visual camera obtains the unilateral lighting picture on the same side as the turned-on light source.
The invention also provides a digital measurement method for the steel bar sample, which adopts the digital measurement system for the steel bar sample and is characterized by comprising the following steps:
step 1, placing a steel bar to be tested on a rotary material frame, and conveying the steel bar on the rotary material frame into a steel bar stretching treatment module by a robot module; after the steel bars are placed in place, the vision acquisition module photographs the steel bars to obtain an initial steel bar picture;
step 2, the software processing module marks a plurality of virtual marking points on the initial steel bar picture at a preset position, divides the whole steel bar into a plurality of marking sections of steel bars through the virtual marking points, and inputs the relevant characteristic information of the steel bars of each marking section;
step 3, starting a tensile test on the steel bar by the steel bar tensile processing module, continuously photographing and taking images of the steel bar by the visual acquisition module in a preset period in the test process, and transmitting the obtained steel bar real-time pictures to the software processing module; the software processing module analyzes the real-time picture of the steel bar in real time, tracks the position change of each virtual mark point, and continuously updates the relevant characteristic information of the steel bar of each mark section in the process of stretching the steel bar until the steel bar is broken; when the software processing module detects that the steel bar breaks, calling a historical steel bar real-time picture closest to the breaking moment, and automatically calling a breaking point detection algorithm after the software processing module detects that the steel bar breaks;
step 4, after the steel bar is broken, light sources at different positions are alternately lighted, after each light source is lighted, a single-side lighting picture is obtained through a vision acquisition module, two single-side lighting pictures are overlapped and combined into a steel bar contour diagram through a software processing module, and breaking points at two ends of the steel bar are detected on the steel bar contour diagram; respectively extending to two sides by taking the breaking points at two ends as starting points to find corresponding virtual marking points on the steel bar profile graph, wherein the initial distance between the two obtained virtual marking points on the initial steel bar graph is 5 times of the diameter of the steel bar, and calculating the sum of the distances from the two virtual marking points to the breaking points at the two corresponding ends to obtain the distance after breaking;
and 5, after the steel bar tensile test is finished, the robot module takes down the broken steel bar from the steel bar tensile processing module, puts the steel bar into the weighing measuring module for weighing, recovers the waste, and automatically generates and stores corresponding result data by the software processing module.
Preferably, in step 2, the initial interval between two adjacent virtual marking points is 1mm.
Compared with the prior art, the invention has the following beneficial effects:
the invention can realize the online measurement of the lengths and the weights of the reinforcing steel bars of a plurality of samples, can meet the detection requirement of the reinforcing steel bar stretching experiment, completes the modularized design, reduces the time waiting of each module for independent work, and obviously improves the detection efficiency.
Drawings
Fig. 1 is a main body structure diagram used in the present invention.
Reference numerals illustrate: 1-a robot module; 2-rotating the material rack; 3-a weighing measurement module; 4-a reinforcing steel bar stretching treatment module.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
As shown in fig. 1, in one aspect of this embodiment, a digital measurement system for a steel bar sample is disclosed, comprising:
the robot module 1, in this embodiment, the robot module 1 includes a robot arm.
And the vision acquisition module is responsible for acquiring images of the steel bar incoming materials in real time. In this embodiment, the vision acquisition module further includes a vision camera, a light source controller, a vision controller, a slider optical axis, and an optical axis bracket. The visual camera is arranged on the sliding block, the sliding block is connected with the optical axis of the sliding block in a matching way, the optical axis of the sliding block is fixed on the optical axis support, and the sliding block can move up and down on the optical axis support along the optical axis of the sliding block, so that the visual camera is driven to move synchronously. And obtaining the picture after the steel bar is stretched and broken in real time by a visual camera. The light sources are arranged at the left side and the right side of the steel bar stretching processing module 4, the left light source and the right light source are triggered to be turned on and turned off by independent external signals, after the steel bar is broken, the single-side light sources are respectively turned on to take images, and then the two single-side light sources take images to be overlapped and synthesized.
And the steel bar stretching treatment module 4 is used for carrying out a stretching test on the steel bars. The robot module 1 takes out the steel bars from the rotary material frame 2 and then places the steel bars on the steel bar stretching treatment module 4.
And the software processing module is used for virtually marking the steel bar picture, tracking the marked point position in real time in the tensile test process, further automatically identifying the breaking point of the steel bar, and calculating the elongation after breaking and the total elongation of the steel bar.
And the weighing and measuring module 3 is used for weighing and recycling the reinforcing steel bars after the robot module 1 takes down the reinforcing steel bars subjected to the tensile test from the reinforcing steel bar tensile processing module 4.
Another aspect of the present embodiment is to disclose a method for digitally measuring a steel bar sample using the above system, including the following steps:
and step 1, placing the steel bars to be tested on the rotary material frame 2, and conveying the steel bars on the rotary material frame 2 into the steel bar stretching treatment module 4 by the robot module 1. After the steel bars are placed in place, the vision acquisition module photographs the steel bars to obtain an initial steel bar picture.
And 2, marking a plurality of virtual marking points (positions and numbers of the virtual marking points are determined according to actual requirements) on the preset positions by the software processing module, wherein the initial interval of each virtual marking point is 1mm, dividing the whole steel bar into a plurality of marking section steel bars through the virtual marking points, and recording the relevant characteristic information of the steel bars of each marking section.
And 3, starting a tensile test on the steel bar by the steel bar tensile processing module 4, continuously photographing and taking images of the steel bar by the visual acquisition module in a preset period in the test process, and transmitting the obtained steel bar real-time pictures to the software processing module. The software processing module analyzes the real-time picture of the steel bar in real time, tracks the position change of each virtual marking point, and continuously updates the relevant characteristic information of the steel bar of each marking section in the process of stretching the steel bar until the steel bar is broken. When the software processing module detects that the steel bar breaks, the historical steel bar real-time picture closest to the breaking moment is automatically called, and when the software processing module detects that the steel bar breaks, the breaking point detection algorithm is automatically called.
And 4, after the steel bar is broken, alternately lighting the left and right light sources of the steel bar stretching processing module 4, obtaining a single-side lighting picture through the vision acquisition module after lighting the single-side light sources each time, overlapping and combining the two single-side lighting pictures into a steel bar profile through the software processing module, and detecting breaking points at two ends of the steel bar through software analysis. And then, respectively extending to two sides by taking the breaking points at two ends as starting points to search for corresponding virtual marking points on the steel bar profile graph, wherein the initial distance between the two obtained virtual marking points on the initial steel bar graph is 5 times of the diameter of the steel bar, and calculating the sum of the distances from the two virtual marking points to the breaking points at the two corresponding ends to obtain the distance after breaking.
Meanwhile, the elongation after break and the total elongation of the maximum force are calculated. Wherein, the elongation after breaking is (sum of the distances from the corresponding virtual punctuation to the breaking point)/5 d; and 3, the maximum force total extension rate is the distance between two virtual mark points, which is 50mm from the center of the upper jaw and the lower jaw of the steel bar which are recorded and tracked in real time to the two ends of the steel bar, and after the stretching is finished, the distance between the two virtual mark points of the screening record is called according to the maximum force time given by the stretching machine, namely the maximum force total extension rate is 100.
And 5, after the steel bar tensile test is finished, the robot module 1 takes down the broken steel bar from the steel bar tensile processing module 4, puts the steel bar into the weighing measuring module 3 for weighing, and then recovers the waste, and the software processing module automatically generates and stores corresponding result data.
The basic principle and main characteristics of the invention and the advantages of the invention are shown and described above, standard parts used by the invention can be purchased from market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of the parts adopt conventional means such as mature bolt rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the description is omitted.
Claims (4)
1. A digital measurement system for a rebar sample, comprising:
the rotary material rack is used for placing the steel bars to be tested;
the weighing measurement module is used for weighing the weight of the broken steel bars;
the robot module is used for moving the steel bars between the rotary material frame and the steel bar stretching treatment module and between the steel bar stretching treatment module and the weighing measurement module;
the visual acquisition module is used for acquiring real-time images of the steel bars placed on the steel bar stretching processing module to obtain initial steel bar images, real-time steel bar images in the stretching test process and single-side polished images after the steel bars are broken, wherein the single-side polished images are images obtained after the broken steel bars are polished from the single side;
the steel bar stretching treatment module is used for carrying out a stretching test on the steel bars placed on the steel bar stretching treatment module;
a software processing module for: virtually marking the initial steel bar picture; in the tensile test process, real-time tracking is carried out on the virtual mark after the real-time picture of the steel bar is obtained in real time; and superposing the two unilateral polishing pictures to form a steel bar profile, identifying two ends of the steel bar profile to obtain two ends of the broken steel bar, and further calculating the elongation after the breaking and the total elongation of the steel bar based on the two ends of the broken steel bar.
2. The digitized measurement system of claim 1 wherein the visual acquisition module comprises a movable visual camera and a light source, wherein the left and right sides of the rebar stretching processing module are respectively provided with a light source which is triggered to be turned on and off by independent external signals, and when a unilateral lighting picture is obtained, the light sources on the two sides are turned on successively, so that the unilateral lighting picture on the same side as the turned-on light source is obtained by the visual camera.
3. A method for digitally measuring a steel bar sample, which adopts the steel bar sample digital measurement system as claimed in claim 1, and is characterized by comprising the following steps:
step 1, placing a steel bar to be tested on a rotary material frame, and conveying the steel bar on the rotary material frame into a steel bar stretching treatment module by a robot module; after the steel bars are placed in place, the vision acquisition module photographs the steel bars to obtain an initial steel bar picture;
step 2, the software processing module marks a plurality of virtual marking points on the initial steel bar picture at a preset position, divides the whole steel bar into a plurality of marking sections of steel bars through the virtual marking points, and inputs the relevant characteristic information of the steel bars of each marking section;
step 3, starting a tensile test on the steel bar by the steel bar tensile processing module, continuously photographing and taking images of the steel bar by the visual acquisition module in a preset period in the test process, and transmitting the obtained steel bar real-time pictures to the software processing module; the software processing module analyzes the real-time picture of the steel bar in real time, tracks the position change of each virtual mark point, and continuously updates the relevant characteristic information of the steel bar of each mark section in the process of stretching the steel bar until the steel bar is broken; when the software processing module detects that the steel bar breaks, calling a historical steel bar real-time picture closest to the breaking moment, and automatically calling a breaking point detection algorithm after the software processing module detects that the steel bar breaks;
step 4, after the steel bar is broken, light sources at different positions are alternately lighted, after each light source is lighted, a single-side lighting picture is obtained through a vision acquisition module, two single-side lighting pictures are overlapped and combined into a steel bar contour diagram through a software processing module, and breaking points at two ends of the steel bar are detected on the steel bar contour diagram; respectively extending to two sides by taking the breaking points at two ends as starting points to find corresponding virtual marking points on the steel bar profile graph, wherein the initial distance between the two obtained virtual marking points on the initial steel bar graph is 5 times of the diameter of the steel bar, and calculating the sum of the distances from the two virtual marking points to the breaking points at the two corresponding ends to obtain the distance after breaking;
and 5, after the steel bar tensile test is finished, the robot module takes down the broken steel bar from the steel bar tensile processing module, puts the steel bar into the weighing measuring module for weighing, recovers the waste, and automatically generates and stores corresponding result data by the software processing module.
4. The digitized measurement method of claim 1 wherein in step 2, the initial spacing between two adjacent virtual marking points is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344919.8A CN117346838A (en) | 2023-10-17 | 2023-10-17 | Digital measurement system and method for steel bar samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344919.8A CN117346838A (en) | 2023-10-17 | 2023-10-17 | Digital measurement system and method for steel bar samples |
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| Publication Number | Publication Date |
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| CN117346838A true CN117346838A (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311344919.8A Pending CN117346838A (en) | 2023-10-17 | 2023-10-17 | Digital measurement system and method for steel bar samples |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119043962A (en) * | 2024-10-31 | 2024-11-29 | 徐州杉达瑞建材有限公司 | Testing arrangement of reinforcing bar |
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2023
- 2023-10-17 CN CN202311344919.8A patent/CN117346838A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119043962A (en) * | 2024-10-31 | 2024-11-29 | 徐州杉达瑞建材有限公司 | Testing arrangement of reinforcing bar |
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