CN111781124A - Concrete and mortar impermeability instrument based on machine vision and water seepage detection method - Google Patents
Concrete and mortar impermeability instrument based on machine vision and water seepage detection method Download PDFInfo
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- CN111781124A CN111781124A CN202010729046.2A CN202010729046A CN111781124A CN 111781124 A CN111781124 A CN 111781124A CN 202010729046 A CN202010729046 A CN 202010729046A CN 111781124 A CN111781124 A CN 111781124A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000003487 anti-permeability effect Effects 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a concrete and mortar impermeability instrument based on machine vision, which comprises a rack, a pressurizing cover plate, a camera, a sample unloading push rod, an electromagnetic valve, a water pump and a water tank, wherein the camera detects a test block at the bottom end of the pressurizing cover plate in real time, a client analyzes and processes the color difference of an image of the test block shot by the camera, judges the wading states at different times, and closes a test block pipeline with water seepage area through the electromagnetic valve after reaching a certain degree. The invention has the advantages of improving automation and intelligence level, improving efficiency, saving cost and the like.
Description
Technical Field
The invention relates to the technical field of automatic detection of concrete water seepage, in particular to a concrete and mortar impermeability instrument based on machine vision and a water seepage detection method.
Background
The concrete and the mortar are widely applied in the existing building industry, and for some buildings, the buildings are required to have certain impermeability, so the impermeability test is carried out on the concrete and the mortar test block before the concrete and the mortar test block are applied to construction engineering.
At present, most of the impermeability tests are manually realized, the labor cost is high, and some potential safety hazards exist in the operation process.
Therefore, a concrete and mortar impermeability tester and a water seepage detection method based on machine vision are developed to solve the problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a concrete and mortar impermeability tester and a water seepage detection method based on machine vision, which have the advantages of improving automation and intelligence levels, improving efficiency, saving cost and the like.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a concrete and mortar anti-permeability apparatus based on machine vision, includes frame, pressurization apron, camera, unloads a kind push rod, solenoid valve, water pump and water tank, the top department of frame is equipped with a plurality of test holes of putting to one side, there is one side by side camera and one through the leg joint in the bottom in test hole unload a kind push rod, the one end of pressurization apron with the top swing joint of frame, the water tank sets up the bottom of frame, the top department of water tank erects to be equipped with a plurality ofly the water pump, the water pump with pressurization apron is through many water piping connection, be equipped with one on the water pipe the solenoid valve, anti-permeability apparatus electric connection to a customer end, pressurization apron lid is established a plurality of the top department in test hole, the test block has been placed in the test hole.
Preferably, the camera is arranged right opposite to the bottom end of the test block and connected with the client.
Preferably, the machine vision-based water seepage detection method for the concrete and mortar impermeability instrument sequentially comprises the following steps:
3.1, starting the camera, and setting the acquisition delay time of the camera to be 60 s;
3.2, the camera collects a test image and sends the test image to the client;
3.3, detecting whether all the test hole sites of the test machine are placed in the test block in time by using a shape matching algorithm or a background segmentation algorithm at the client;
3.4, closing the pressurizing cover plate;
3.5, opening the electromagnetic valve for water injection, and injecting water into the test block through the water pipe;
3.6, accurately detecting whether the water seepage condition exists in the test process in the client based on machine vision according to the color difference between the water seepage area and the dry area;
3.7, numbering the test blocks, and storing the water seepage information, the test video and the water seepage image of the test blocks into the client, so as to facilitate later-stage inspection;
3.8, closing all the electromagnetic valves and stopping water injection;
3.9, opening the pressurizing cover plate;
3.10, starting the sample unloading push rod to push out all test blocks;
3.11, manually taking down all test blocks; and repeating the steps 3.2-3.10 to realize rapid and continuous tests.
Preferably, step 3.3 comprises the steps of:
3.3.1, if the test holes are all filled with test blocks, executing a step 3.4;
3.3.2, if the vacant test hole positions exist, the client prompts to complete the test blocks, and the step 3.4 is executed.
Preferably, step 3.6 comprises the steps of:
3.6.1, if water seepage occurs, judging the water seepage degrees at different times according to the ratio of the water seepage area to the area of the dry area in the water seepage image, positioning the electromagnetic valve corresponding to the test hole site through the water seepage image when a certain degree is reached, controlling the electromagnetic valve to stop injecting water to the corresponding test hole site, and continuing water injection tests on other test hole sites;
3.6.2, if no water seepage exists, stopping the test after the test water pressure is reached, and executing the step 3.7.
Preferably, step 3.7 comprises the steps of:
3.7.1, if the test block has water seepage, acquiring the start and stop time of water seepage of the test block, a corresponding image and a water pressure value according to the processing result of the multi-frame image acquired in the test in a delayed manner, and storing water seepage information, a video and an image;
3.7.2, if the test block does not seep water, numbering the corresponding test block, and storing the qualified information of the test block.
Preferably, the number of the test holes is 12, the number of the pressure cover plates is 6, and two test holes are pressed at the bottom end of one pressure cover plate.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the concrete and mortar impermeability instrument and the water seepage detection method based on the machine vision, the mechanical transmission and the electrical control are combined, the water seepage condition of a test block can be intelligently and accurately detected, and the concrete and mortar impermeability instrument based on the machine vision is more automatic and intelligent;
2. the impermeability information, the test video and the image of the test block are sorted and stored, so that the management and storage of data and the retroactive analysis of the data are facilitated, and the test data are safer and more reliable;
3. and the impermeability test is detected, the test efficiency is improved, and the resource cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a concrete and mortar impermeability instrument based on machine vision.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
In fig. 1, a concrete and mortar impermeability instrument based on machine vision includes a frame 30, a pressure cover plate 10, a camera 40, a sample unloading push rod 50, an electromagnetic valve 60, a water pump 70 and a water tank 80. The top department of frame 30 is equipped with a plurality of test holes 35 of putting to one side, the bottom of test hole 35 has a camera 40 and a unloading appearance push rod 50 side by side through the leg joint, the one end of pressurization apron 10 and the top swing joint of frame 30, water tank 80 sets up the bottom at frame 30, the top department of water tank 80 erects a plurality of water pumps 70, water pump 70 and pressurization apron 10 are connected through many water pipes 20, be equipped with a solenoid valve 60 on the water pipe 20, impervious appearance electric connection to a customer end 90, pressurization apron 10 covers the top department of establishing at a plurality of test holes 35, the test block has been placed in the test hole 35. An electromagnetic valve 60 is connected to two water tubes 20, and each water tube 20 is connected to a test block at the lower end of the pressurizing cover plate 10.
The camera 40 has low requirements for resolution, only needs to be capable of clearly shooting the test block image and sets the test block image to be in a delay acquisition mode, and the camera 40 is arranged right opposite to the bottom end of the test block and is connected with the client 90. The client 90 has the functions of viewing the test video and images, processing and analyzing the images, and saving the test images, videos, and data.
A water seepage detection method of a concrete and mortar impermeability instrument based on machine vision sequentially comprises the following steps:
3.1, starting the camera 40, and setting the acquisition delay time of the camera 40 to be 60 s;
3.2, the camera 40 collects a test image and sends the test image to the client 90;
3.3, detecting whether all test hole sites 35 of the test machine are placed in the test block in time by using a shape matching algorithm or a background segmentation algorithm at the client 90; the number of the test holes 35 is 12, the number of the pressure cover plates 10 is 6, and two test holes 35 are pressed at the bottom end of one pressure cover plate 10.
3.3.1, if the test holes 35 are all filled with test blocks, executing the step 3.4;
3.3.2, if the empty test hole position 35 exists, the client 90 prompts to complete the test block, and the step 3.4 is executed.
3.4, closing the pressurizing cover plate 10;
3.5, opening a water injection solenoid valve 60, and injecting water into the test block through a water pipe 20;
3.6, accurately detecting whether the water seepage condition exists in the test process in the client 90 according to the color difference between the water seepage area and the dry area based on machine vision;
3.6.1, if water seepage exists, judging the water seepage degrees at different times according to the ratio of the water seepage area in the water seepage image to the area of the dry area, positioning the electromagnetic valve 60 corresponding to the test hole site 35 through the water seepage image when a certain degree is reached, controlling the electromagnetic valve 60 to stop injecting water to the corresponding test hole site 35, and continuing water injection tests on other test hole sites 35;
3.6.2, if no water seepage exists, stopping the test after the test water pressure is reached, and executing the step 3.7.
3.7, numbering the test blocks, and storing the water seepage information, the test video and the water seepage image of the test blocks into the client 90, so as to facilitate later-stage inspection;
3.7.1, if the test block has water seepage, acquiring the start and stop time of water seepage of the test block, a corresponding image and a water pressure value according to the processing result of the multi-frame image acquired in the test in a delayed manner, and storing water seepage information, a video and an image;
3.7.2, if the test block does not seep water, numbering the corresponding test block, and storing the qualified information of the test block.
3.8, closing all the electromagnetic valves 60 and stopping water injection;
3.9, opening the pressurizing cover plate 10;
3.10, starting the sample unloading push rod 50 and pushing out all test blocks;
3.11, manually taking down all test blocks; and repeating the steps 3.2-3.10 to realize rapid and continuous tests.
The invention is based on machine vision, realizes accurate detection of the water seepage condition of the test block in the anti-seepage test process, enables the test to be more automatic and intelligent, improves the data traceability and reliability, and improves the test efficiency.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a concrete and mortar anti-permeability apparatus based on machine vision which characterized in that: including frame, pressurization apron, camera, unload appearance push rod, solenoid valve, water pump and water tank, the top department of frame is equipped with a plurality of test holes of putting to one side, there is one side by side one bottom in test hole through leg joint the camera with one unload the appearance push rod, the one end of pressurization apron with the top swing joint of frame, the water tank sets up the bottom of frame, the top department of water tank erects to be equipped with a plurality ofly the water pump, the water pump with the pressurization apron is through many water piping connection, be equipped with one on the water pipe the solenoid valve, impervious appearance electric connection to customer end, the pressurization apron lid is established a plurality of the top department in test hole, the test block has been placed in the test hole.
2. The machine vision-based concrete and mortar impermeability test instrument of claim 1, wherein the camera is disposed opposite to the bottom end of the test block and connected to the client.
3. The machine vision-based water seepage detection method for the concrete and mortar impermeability instrument of claim 1, which comprises the following steps in sequence:
3.1, starting the camera, and setting the acquisition delay time of the camera to be 60 s;
3.2, the camera collects a test image and sends the test image to the client;
3.3, detecting whether all the test hole sites of the test machine are placed in the test block in time by using a shape matching algorithm or a background segmentation algorithm at the client;
3.4, closing the pressurizing cover plate;
3.5, opening the electromagnetic valve for water injection, and injecting water into the test block through the water pipe;
3.6, accurately detecting whether the water seepage condition exists in the test process in the client based on machine vision according to the color difference between the water seepage area and the dry area;
3.7, numbering the test blocks, and storing the water seepage information, the test video and the water seepage image of the test blocks into the client, so as to facilitate later-stage inspection;
3.8, closing all the electromagnetic valves and stopping water injection;
3.9, opening the pressurizing cover plate;
3.10, starting the sample unloading push rod to push out all test blocks;
3.11, manually taking down all test blocks; and repeating the steps 3.2-3.10 to realize rapid and continuous tests.
4. The machine vision-based water seepage detection method for the concrete and mortar impermeability instrument of claim 3, wherein the step 3.3 comprises the following steps:
3.3.1, if the test holes are all filled with test blocks, executing a step 3.4;
3.3.2, if the vacant test hole positions exist, the client prompts to complete the test blocks, and the step 3.4 is executed.
5. The machine vision-based water seepage detection method for the concrete and mortar impermeability instrument of claim 3, wherein the step 3.6 comprises the following steps:
3.6.1, if water seepage occurs, judging the water seepage degrees at different times according to the ratio of the water seepage area to the area of the dry area in the water seepage image, positioning the electromagnetic valve corresponding to the test hole site through the water seepage image when a certain degree is reached, controlling the electromagnetic valve to stop injecting water to the corresponding test hole site, and continuing water injection tests on other test hole sites;
3.6.2, if no water seepage exists, stopping the test after the test water pressure is reached, and executing the step 3.7.
6. The machine vision-based water seepage detection method for the concrete and mortar impermeability instrument of claim 5, wherein the step 3.7 comprises the following steps:
3.7.1, if the test block has water seepage, acquiring the start and stop time of water seepage of the test block, a corresponding image and a water pressure value according to the processing result of the multi-frame image acquired in the test in a delayed manner, and storing water seepage information, a video and an image;
3.7.2, if the test block does not seep water, numbering the corresponding test block, and storing the qualified information of the test block.
7. The machine vision-based water seepage detection method for a concrete and mortar impermeability instrument of claim 3, wherein the number of the test holes is 12, the number of the pressure cover plates is 6, and two test holes are pressed at the bottom end of one pressure cover plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010729046.2A CN111781124A (en) | 2020-07-27 | 2020-07-27 | Concrete and mortar impermeability instrument based on machine vision and water seepage detection method |
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| CN202010729046.2A CN111781124A (en) | 2020-07-27 | 2020-07-27 | Concrete and mortar impermeability instrument based on machine vision and water seepage detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899675A (en) * | 2021-10-13 | 2022-01-07 | 淮阴工学院 | Automatic concrete impermeability detection method and device based on machine vision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113899675A (en) * | 2021-10-13 | 2022-01-07 | 淮阴工学院 | Automatic concrete impermeability detection method and device based on machine vision |
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