CN115655122A - Crack image monitoring device - Google Patents
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- CN115655122A CN115655122A CN202211526442.0A CN202211526442A CN115655122A CN 115655122 A CN115655122 A CN 115655122A CN 202211526442 A CN202211526442 A CN 202211526442A CN 115655122 A CN115655122 A CN 115655122A
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Abstract
The invention provides a crack image monitoring device which comprises an image acquisition unit and a control unit, wherein the image acquisition unit is arranged on a crack in a watertight sealing mode, the image acquisition unit and the control unit are installed separately, the image acquisition unit is electrically connected with the control unit, the image acquisition unit can uniformly illuminate the crack, the control unit controls the image acquisition unit to shoot a crack image, the image acquisition unit transmits the crack image to the control unit, the control unit identifies crack parameters in the crack image, and the control unit establishes a monitoring database by using the crack image and the corresponding crack parameters and generates monitoring chart data and a monitoring data index. The invention has the advantages that: the split type design is adopted, and the control unit can be arranged at a position with a better signal; one control unit can be connected with a plurality of image acquisition units, so that the cost is reduced; the light mixing piece ensures the illumination consistency and improves the quality of the crack image; and the index of the monitoring data is automatically generated, so that the retrieval is convenient.
Description
Technical Field
The invention relates to the field of engineering monitoring, in particular to a crack image monitoring device.
Background
Cracks in buildings may cause collapse accidents of heavy buildings, so that safety management of buildings with cracks needs to be enhanced, structural cracks on the buildings need to be regularly measured and monitored, and the structural cracks are timely processed under the condition that the cracks exceed a safety range, so that safety of lives and properties of people is guaranteed.
The time cost and the labor cost of the traditional artificial crack measurement are high, the labor and the materials are repeatedly consumed in long-term monitoring, the monitoring frequency is low, and the real-time monitoring cannot be achieved. In addition, the manual measurement cannot eliminate the measurement error, and has the disadvantages of long operation time, and the need of preparation and examination and approval before operation.
The existing automatic crack monitoring device usually arranges a large number of sensors around the crack to monitor the width of the crack, and the problems of complex field wiring, inconvenient construction and the like are easily caused due to the large number of the sensors required to be arranged; in addition, this type of detection device can only monitor the width of crack, can't monitor other cracked parameters and can't be providing cracked image, and this makes monitoring personnel be difficult to comprehensively understand cracked state, can't directly perceivedly grasp cracked change situation, has improved monitoring personnel and has judged the whether safe degree of difficulty of building. Finally, the conventional detection device with wireless communication function usually integrates the wireless communication function into the detection device, but the structure of the building is usually complicated, and the communication signal at the position of the crack may be poor, so that the detection device cannot smoothly communicate.
In summary, there is a need in the art to provide a crack image monitoring device, which can overcome the defects of the prior art.
Disclosure of Invention
The invention provides a crack image monitoring device which can solve the problems in the prior art. The purpose of the invention is realized by the following technical scheme.
The invention provides a crack image monitoring device which comprises an image acquisition unit and a control unit, wherein the image acquisition unit is arranged on a crack in a watertight sealing mode and is separately installed with the control unit, the image acquisition unit is electrically connected with the control unit and can uniformly illuminate the crack, the control unit controls the image acquisition unit to shoot a crack image, the image acquisition unit transmits the crack image to the control unit, the control unit identifies crack parameters in the crack image, and the control unit establishes a monitoring database by using the crack image and the corresponding crack parameters and generates monitoring chart data and a monitoring data index.
According to the crack image monitoring device provided by the above embodiment of the invention, the crack image monitoring device further comprises a cloud server, the control unit is remotely connected with the cloud server, the control unit remotely transmits crack parameters, monitoring chart data and monitoring data indexes to the cloud server, and a client used by a monitoring person checks the monitoring database, the monitoring chart data and the monitoring data indexes uploaded by the crack image monitoring device through the cloud server.
According to the crack image monitoring device provided by the above embodiment of the invention, the image acquisition unit includes a housing, a camera, a light mixing sheet and a bottom plate, the housing is in a hood shape with an opening at a lower part, the bottom plate is made of a transparent material, the bottom plate is arranged at the opening of the housing, the bottom plate covers above the crack, the camera is arranged above the crack and aligned with the crack, the light mixing sheet is arranged in the housing and between the camera and the crack, the camera is arranged at the top inside the housing and fixedly connected with the housing, the light mixing sheet is fixedly connected with the housing, the camera is electrically connected with the control unit, the camera is used for illuminating the crack and acquiring the crack image, and the light mixing sheet is used for enabling the camera to uniformly illuminate the crack.
According to the crack image monitoring device provided by the above embodiment of the invention, the camera comprises an image sensor, a light source and a camera substrate, the camera substrate is fixedly connected with the top of the inner side of the shell, the image sensor and the light source are respectively arranged on the camera substrate and aligned to the crack direction, and the light source is used for illuminating the crack.
According to the crack image monitoring device provided by the above-mentioned embodiment of the present invention, the light mixing sheet includes the transparent portion and the light scattering portion, the transparent portion is located below the image sensor, the light scattering portion is located below the light source and surrounds the transparent portion, the transparent portion is used for enabling the image sensor to capture an image of the crack, and the light scattering portion is used for mixing light so as to enable the light of the light source to uniformly irradiate on the crack.
According to the crack image monitoring device provided by the above-mentioned embodiment of the present invention, the material for manufacturing the light mixing sheet includes, but is not limited to, glass or transparent PVC.
According to the crack image monitoring device provided by the above embodiment of the invention, the light mixing sheet is provided with screw holes, and the light mixing sheet is fixed on the housing by screws penetrating through the screw holes.
According to the crack image monitoring device provided by the above embodiment of the invention, the control unit includes a gateway component, a controller and a power supply, the controller is respectively electrically connected with the image acquisition unit, the gateway component and the power supply, the power supply is electrically connected with the gateway component and the image acquisition unit, the gateway component is remotely connected with the cloud server, and the controller is used for controlling the image acquisition unit, identifying crack parameters in the crack image, establishing a monitoring database, generating monitoring chart data and monitoring data index.
According to the crack image monitoring device provided by the above one embodiment of the invention, the crack parameters include the area of the crack region, the length of the main crack and the maximum width of the main crack.
According to the crack image monitoring device provided by the above embodiment of the invention, the monitoring graph data is used for generating a monitoring graph at the cloud server or the client, and the monitoring graph can display the corresponding relation between one or more of the crack region area, the main crack length and the width of the main crack where the width is maximum and the time.
According to the fracture image monitoring device provided by the embodiment of the invention, the monitoring data index is used for retrieving the monitoring database, so that a user can inquire the time when the fracture area, the main fracture length and/or the width of the main fracture where the width is the largest reaches the fracture parameter early warning value, the fracture image and the fracture parameters.
According to the crack image monitoring device provided by the above one embodiment of the present invention, the control unit issues an alarm when the crack parameter reaches or exceeds the corresponding crack parameter early warning value, where the crack parameter early warning value is a threshold value preset for each crack parameter.
According to the crack image monitoring device provided by the embodiment of the invention, the gateway component is an internet of things gateway, and the gateway component is remotely connected with the cloud server in a wired or wireless manner.
According to the crack image monitoring device provided by the above one embodiment of the invention, the image acquisition unit is electrically connected with the control unit through a cable, and the cable is an RS485 cable.
According to the crack image monitoring device provided by the embodiment of the invention, the camera is fixedly connected with the shell through the connecting piece.
According to the crack image monitoring device provided by the above one embodiment of the invention, the crack image monitoring device further comprises a plurality of image acquisition units, each image acquisition unit is respectively arranged on different cracks in a waterproof sealing manner, and each image acquisition unit is respectively electrically connected with the control unit.
The crack image monitoring device according to the embodiment of the invention has the advantages that: the split design is adopted, and the control unit can be independently arranged at a position with a better communication signal; the light emitted by the light source can be uniformly irradiated on the cracks through the light mixing sheet; various monitoring chart data and crack parameter indexes can be automatically generated, and monitoring personnel can conveniently retrieve and check the data and the crack parameter indexes.
Drawings
Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments thereof, which proceeds with reference to the accompanying drawings.
Fig. 1 shows a schematic view of a crack image monitoring device according to an embodiment of the invention.
Fig. 2 shows a schematic view of an image acquisition unit of the crack image monitoring device according to an embodiment of the invention as shown in fig. 1.
Fig. 3 illustrates a schematic view of a light mixing sheet of the crack image monitoring device according to one embodiment of the present invention as shown in fig. 1.
FIG. 4 shows a schematic representation of the fracture of FIG. 1 identifying the corresponding location of fracture parameters on the fracture, according to one embodiment of the invention.
FIG. 5 shows a graph of the length of a primary fracture generated by the fracture image monitoring device according to one embodiment of the present invention as shown in FIG. 1 over time.
FIG. 6 shows a graph of the maximum width of a primary fracture generated by the fracture image monitoring device according to one embodiment of the present invention as shown in FIG. 1 over time.
Fig. 7 shows a graph of the area of the crack generated by the crack image monitoring device according to one embodiment of the present invention as shown in fig. 1 as a function of time.
Fig. 8 shows a graph of the length of the main crack, the maximum width of the main crack, and the area of the crack as a function of time, generated by the crack image monitoring apparatus according to one embodiment of the present invention as shown in fig. 1.
Reference numbers and part names: the system comprises an image acquisition unit, a control unit, a 3-cloud server, a 4-RS485 cable, a shell, a camera 13, a light mixing sheet 14, a bottom plate 15, a connecting piece 21, a gateway component 22, a controller 23, a power supply 121, an image sensor 122, a light source 123, a camera substrate 131, a transparent part 132, a light scattering part 133, a screw hole A, a crack A1, a crack A2, a shooting range of the image sensor B, and light passing through the light scattering part C.
Detailed Description
The following description of the embodiments of the present invention with reference to the drawings and examples will make it clear that the technical solutions, technical problems to be solved, and technical effects produced by the solutions of the present invention will be fully understood by those skilled in the art from the contents described in the present specification. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. In addition, for convenience of description, only portions related to the present invention are shown in the drawings.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings are only used for matching with the contents described in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should fall within the scope covered by the technical contents disclosed in the present invention.
Reference to words such as "first," "second," "the," and the like do not denote a limitation of quantity, and may refer to the singular or the plural. The terms "comprises," "comprising," "including," "has," "having," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the present invention are not restricted to physical or mechanical connections, but may also include direct or indirect electrical connections.
Fig. 1 shows a schematic view of a crack image monitoring device according to an embodiment of the invention. Fig. 2 shows a schematic view of an image acquisition unit of the crack image monitoring device according to an embodiment of the invention as shown in fig. 1. Fig. 3 shows a schematic view of a light mixing sheet of the crack image monitoring device according to an embodiment of the present invention as shown in fig. 1. As shown in fig. 1-3, the crack image monitoring device includes an image collecting unit 1 and a control unit 2, the image collecting unit 1 is disposed on the crack in a waterproof sealing manner, so as to prevent rainwater, dew and the like from infiltrating into the crack to affect the image collecting quality and delay further expansion of the crack due to rainwater and other factors, the waterproof sealing manner includes but is not limited to using waterproof sealant to bond the image collecting unit 1 on the crack a, the image collecting unit 1 and the control unit 2 are separately installed, the image collecting unit 1 is electrically connected with the control unit 2, the image collecting unit 1 can uniformly illuminate the crack, the control unit 2 controls the image collecting unit 1 to shoot the crack image, the image collecting unit 1 transmits the crack image to the control unit 2, the control unit 2 identifies crack parameters in the crack image, and the control unit 2 uses the crack image and corresponding crack parameters to establish a monitoring database and generate monitoring chart data and monitoring data index.
According to the fracture image monitoring device provided by the above one embodiment of the present invention, the monitoring database is used for storing data such as fracture images, fracture parameters, and acquisition time of the fracture images.
According to the crack image monitoring device provided by the above embodiment of the invention, the crack image monitoring device further includes a cloud server 3, the control unit 2 is remotely connected to the cloud server 3, the remote connection refers to data connection implemented through a wireless network or a communication network, the control unit 2 remotely transmits the monitoring database, the monitoring chart data and the monitoring data index to the cloud server 3, and a client (not shown in the figure) used by a monitoring person checks the monitoring database, the monitoring chart data and the monitoring data index uploaded by the crack image monitoring device through the cloud server 3. Clients include, but are not limited to, desktop computers, laptop computers, tablet computers, cell phones, and APPs.
According to the crack image monitoring device provided by the above-mentioned one embodiment of the present invention, the image capturing unit 1 includes a housing 11, a camera 12, a light mixing sheet 13 and a bottom plate 14, the housing 11 is in a shape of a cover with an opening at a lower portion thereof, the bottom plate 14 is made of a transparent material, the bottom plate 14 is disposed at the opening of the housing 11, the bottom plate 14 covers the crack a, the camera 12 is disposed above the crack a and aligned with the crack a, the light mixing sheet 13 is disposed in the housing 11 and between the camera 12 and the crack a, the camera 12 is disposed at a top portion of an inner side of the housing 11 and fixedly connected to the housing 11, the light mixing sheet 13 is fixedly connected to the housing 11, the camera 12 is electrically connected to the control unit 2, the camera 12 is used for illuminating the crack a and capturing a crack image, and the light mixing sheet 13 is used for enabling the camera 12 to uniformly illuminate the crack a.
According to the crack image monitoring device provided by the above-mentioned embodiment of the present invention, the transparent material used for the bottom plate 14 includes, but is not limited to, glass.
According to the crack image monitoring device provided by the above-mentioned one embodiment of the present invention, the camera 12 includes the image sensor 121, the light source 122 and the camera substrate 123, the camera substrate 123 is fixedly connected to the top of the inside of the housing 11, the image sensor 121 and the light source 122 are respectively disposed on the camera substrate 123 and aligned with the direction of the crack a, and the light source 122 is used for illuminating the crack a.
The crack image monitoring device according to the above-mentioned embodiment of the present invention is provided, wherein the light mixing sheet 13 includes a transparent portion 131 and a light scattering portion 132, the transparent portion 131 is located below the image sensor 121, the light scattering portion 132 is located below the light source 122 and surrounds the transparent portion 131, the transparent portion 131 is used for enabling the image sensor 121 to capture an image of the crack a, preferably, the transparent portion 131 enables the capture range B of the image sensor to cover the whole range of the bottom plate 14, and the light scattering portion 132 is used for mixing light so that the light C passing through the light scattering portion uniformly irradiates on the crack a.
According to the crack image monitoring device provided by the above-mentioned embodiment of the present invention, the material for manufacturing the light mixing sheet 13 includes, but is not limited to, glass or transparent PVC.
According to the crack image monitoring device provided by the above-mentioned one embodiment of the present invention, the light mixing sheet 13 is provided with the screw hole 133, and the light mixing sheet 13 is fixed on the housing 11 by a screw passing through the screw hole 133.
According to the crack image monitoring device provided by the above one embodiment of the present invention, the control unit 2 includes a gateway component 21, a controller 22 and a power supply 23, the controller 22 is electrically connected to the image acquisition unit 1, the gateway component 21 and the power supply 23, the power supply 23 is electrically connected to the gateway component 21 and the image acquisition unit 1, the gateway component 21 is remotely connected to the cloud server 3, the controller 22 is configured to control the image acquisition unit 1, receive the crack image from the image acquisition unit 1, identify crack parameters in the crack image, generate a monitoring database according to the crack image and the crack parameters, generate monitoring chart data and establish a monitoring data index, and the power supply 23 is configured to supply power to the gateway component 21, the controller 22 and the image acquisition unit 1.
According to the crack image monitoring device provided by the above embodiment of the invention, the gateway component 21 is an internet of things gateway, the gateway component 21 is remotely connected with the cloud server 3 in a wired or wireless manner, and the gateway component includes but is not limited to a CAT1 gateway and a WIFI gateway.
According to the crack image monitoring device provided in the above embodiment of the present invention, the image sensor 121 includes, but is not limited to, a CMOS camera.
According to the crack image monitoring device provided by the above one embodiment of the invention, the crack image monitoring device further comprises a plurality of image acquisition units 1, each image acquisition unit 1 is respectively arranged on different cracks a in a waterproof sealing manner, and each image acquisition unit 1 is respectively electrically connected with the control unit 2. The control unit 2 respectively controls each image acquisition unit 1 connected with the control unit, receives crack images from each image acquisition unit 1, identifies crack parameters in the crack images, generates a monitoring database, monitoring chart data and a monitoring data index for each crack according to the crack images and the crack parameters, and uploads the monitoring database, the monitoring chart data and the monitoring data index of each crack to the cloud server 3.
The unit is the crack image monitoring device provided by the above one embodiment of the invention, wherein the image acquisition unit 1 is electrically connected with the control unit 2 through a cable 4, and the cable 4 is an RS485 cable.
According to the crack image monitoring device provided by the above embodiment of the invention, the camera 12 is fixedly connected with the housing 11 through the connecting member 15, and the connecting member 15 includes, but is not limited to, a screw or a bolt.
FIG. 4 shows a schematic representation of the fracture of FIG. 1 identifying the corresponding location of fracture parameters on the fracture, according to one embodiment of the invention. As shown in fig. 4, the fracture a includes a main fracture A1 and a plurality of secondary fractures A2, the main fracture A1 connects the plurality of branched secondary fractures A2, and fracture parameters of the fracture a include, but are not limited to, fracture area, main fracture length, and main fracture maximum width, i.e., the width where the main fracture width is maximum. The main crack takes two ends which are naturally terminated as a starting point and an end point, and continuously extends between the starting point and the end point in a smooth curve mode; the secondary crack is a crack having one end starting from the main crack and the other end terminating naturally.
FIG. 5 shows a graph of the length of a primary fracture generated by the fracture image monitoring device according to one embodiment of the present invention as shown in FIG. 1 over time. FIG. 6 shows a graph of the maximum width of a primary fracture generated by the fracture image monitoring device according to one embodiment of the present invention as shown in FIG. 1 over time. Fig. 7 shows a graph of the area of the crack generated by the crack image monitoring device according to one embodiment of the present invention as shown in fig. 1 as a function of time. Fig. 8 shows a graph of the length of the main crack, the maximum width of the main crack, and the area of the crack as a function of time, generated by the crack image monitoring apparatus according to one embodiment of the present invention as shown in fig. 1. As shown in fig. 5 to 8, the monitoring chart can display the corresponding relationship between one or more of the area of the crack region, the length of the main crack and the width of the maximum width of the main crack and time, and a monitoring person can quickly know the change process of the crack through the chart to judge the damage degree of the crack. The monitoring graph is generated by graph software or graph APP on a cloud server or a client according to monitoring graph data uploaded by a control unit, the monitoring graph data comprises data information such as crack parameters and crack parameter acquisition time, the monitoring graph data can adopt various data formats which are known now or developed in the future and can be identified by the graph software or the graph APP of the client, and therefore the graph software or the graph APP can read the monitoring graph data, and the graph software or the graph APP comprises but is not limited to Microsoft EXCEL spreadsheets.
According to the crack image monitoring device provided by the above embodiment of the invention, the index of the monitoring data is used for searching the monitoring database, the index is a data structure for sorting one or more columns of values in the database table, and the speed of searching the corresponding data in the database by using the index is faster than that of searching the database by using the conventional mode. In an embodiment of the invention, the control unit uses the crack area, the main crack length and the main crack width as index parameters to perform sequencing and establish a corresponding monitoring data index, and the control unit 2 transmits the monitoring database and the monitoring data index to the cloud server 3, so that a user can query the crack image corresponding to a specific crack parameter in the monitoring database and the acquisition time of the crack image through the monitoring data index.
According to the crack image monitoring device provided by the above one embodiment of the present invention, the control unit issues an alarm when the crack parameter reaches or exceeds the corresponding crack parameter early warning value, where the crack parameter early warning value is a threshold value preset for each crack parameter. The monitoring personnel can preset one or more unequal crack parameter early warning values according to different crack parameters, and when any one crack parameter reaches or exceeds the corresponding threshold value, the control unit 2 correspondingly sends out an alarm. As shown in fig. 5 to 7, a primary early warning value, a secondary early warning value and a tertiary early warning value are respectively set for the main crack length, the crack width and the crack area, wherein the primary early warning value is greater than the secondary early warning value, and the secondary early warning value is greater than the tertiary early warning value.
The crack image monitoring device according to the embodiment of the invention has the advantages that: the split type design is adopted, the control unit and the image acquisition unit are not required to be arranged at the same position, and monitoring personnel can conveniently and independently arrange the control unit at a position with better communication signals; the light emitted by the light source can be uniformly irradiated on the crack through the light mixing sheet, the area of a shadow on the crack due to the irradiation angle of the light is reduced, and the consistency and the quality of a crack image are improved; various monitoring chart data can be automatically generated, so that monitoring personnel can conveniently know the change trend of the crack through chart software; the crack parameter index can be automatically generated, so that monitoring personnel can quickly check the crack image, date and related parameter information related to the index parameters through the index; the crack monitoring system can be used for setting preset multistage early warning values for different crack parameters respectively, and automatically giving an alarm when the crack reaches the early warning values to remind monitoring personnel to pay attention.
While the invention has been described and illustrated with reference to specific embodiments thereof, these descriptions and illustrations are not intended to limit the invention. It will be clearly understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention as defined in the claims. There may be a difference between the technical reproduction in the present invention and the actual equipment due to variables in the manufacturing process, and the like. There may be other embodiments of the invention not specifically illustrated. The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of the appended claims. Although the methods disclosed herein have been described with reference to particular operations being performed in a particular order, it should be understood that these operations may be combined, sub-divided, or arranged to form an equivalent method without departing from the teachings of the present invention. Accordingly, unless specifically indicated herein, the order and grouping of the operations is not a limitation of the present invention.
Claims (13)
1. The utility model provides a crack image monitoring devices, a serial communication port, it includes image acquisition unit and the control unit, the image acquisition unit sets up on the crack with watertight seal's mode, image acquisition unit and the installation of control unit separately, image acquisition unit is connected with the control unit electricity, the crack can be illuminated uniformly to the image acquisition unit, the control unit controls the image acquisition unit and shoots the crack image, the image acquisition unit transmits the crack image for the control unit, the control unit discerns the crack parameter in the crack image, the control unit uses crack image and the crack parameter that corresponds to establish the monitoring database and generates monitoring chart data and monitoring data index.
2. The crack image monitoring device according to claim 1, further comprising a cloud server, wherein the control unit is remotely connected with the cloud server, the control unit remotely transmits the monitoring database, the monitoring chart data and the monitoring data index to the cloud server, and a client used by a monitoring person checks the monitoring database, the monitoring chart data and the monitoring data index uploaded by the crack image monitoring device through the cloud server.
3. The crack image monitoring device of claim 2, wherein the image capturing unit comprises a housing, a camera, a light mixing sheet and a bottom plate, the housing is in a shape of a hood with an opening at a lower portion thereof, the bottom plate is made of a transparent material, the bottom plate is disposed at the opening of the housing, the bottom plate covers the crack, the camera is disposed above the crack and aligned with the crack, the light mixing sheet is disposed in the housing and between the camera and the crack, the camera is disposed at a top portion inside the housing and fixedly connected with the housing, the light mixing sheet is fixedly connected with the housing, the camera is electrically connected with the control unit, the camera is used for illuminating the crack and capturing an image of the crack, and the light mixing sheet is used for enabling the camera to uniformly illuminate the crack.
4. Crack image monitoring device as claimed in claim 3, characterized in that the camera comprises an image sensor, a light source and a camera base plate, the camera base plate is fixedly connected with the top of the inside of the housing, the image sensor and the light source are respectively arranged on the camera base plate and are aligned with the crack direction, and the light source is used for illuminating the crack.
5. The crack image monitoring device of claim 4, wherein the light mixing sheet comprises a transparent part and a light scattering part, the transparent part is positioned below the image sensor, the light scattering part is positioned below the light source and surrounds the transparent part, the transparent part is used for enabling the image sensor to shoot an image of the crack, and the light scattering part is used for mixing light so that the light of the light source can be uniformly irradiated on the crack.
6. The crack image monitoring device of claim 2, wherein the control unit comprises a gateway component, a controller and a power supply, the controller is respectively electrically connected with the image acquisition unit, the gateway component and the power supply, the power supply is electrically connected with the gateway component and the image acquisition unit, the gateway component is remotely connected with the cloud server, and the controller is used for controlling the image acquisition unit, identifying crack parameters in the crack image, establishing a monitoring database, generating monitoring chart data and monitoring data indexes.
7. The fracture image monitoring device of claim 6, wherein the fracture parameters comprise fracture zone area, primary fracture length, and primary fracture maximum width.
8. The crack image monitoring device of claim 7, wherein the monitoring graph data is used for generating a monitoring graph at a cloud server or a client, and the monitoring graph can display the corresponding relation between one or more of the crack region area, the main crack length and the width of the main crack where the width is maximum and the time.
9. The fracture image monitoring device of claim 8, wherein the monitoring data index is used for retrieving a monitoring database, so that a user can inquire the time when the fracture area, the length of the main fracture and/or the width of the main fracture where the width is the largest reaches the fracture parameter early warning value, the fracture image and the fracture parameters.
10. The crack image monitoring device of claim 8, wherein the control unit issues an alarm when the crack parameters reach or exceed corresponding crack parameter warning values, and the crack parameter warning values are threshold values preset for the respective crack parameters.
11. The crack image monitoring device of claim 6, wherein the gateway component is an internet of things gateway, and the gateway component is remotely connected with a cloud server in a wired or wireless manner.
12. The crack image monitoring device of claim 1, wherein the image acquisition unit is electrically connected with the control unit through a cable, and the cable is an RS485 cable.
13. Crack image monitoring device as claimed in claim 3, characterized in that the camera is fixedly connected to the housing by means of a connecting element.
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| JPH01321343A (en) * | 1988-06-23 | 1989-12-27 | Mitsubishi Heavy Ind Ltd | Crack detector for concrete construction |
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| CN217425241U (en) * | 2022-06-07 | 2022-09-13 | 常州市建筑科学研究院集团股份有限公司 | Multifunctional building crack detection device |
| CN115165736A (en) * | 2022-06-20 | 2022-10-11 | 深圳市久久犇自动化设备股份有限公司 | AOI module automatic check out test set |
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| WO2011036330A1 (en) * | 2009-09-28 | 2011-03-31 | Lectorcam, S.L | Device for monitoring and tracking crack propagation |
| KR20120103209A (en) * | 2011-03-10 | 2012-09-19 | (주)코세코 | Crack detecting apparatus |
| CN105044118A (en) * | 2015-08-17 | 2015-11-11 | 东莞市神州视觉科技有限公司 | AOI light source |
| CN105336119A (en) * | 2015-11-27 | 2016-02-17 | 中国地质调查局水文地质环境地质调查中心 | Collapse mass crack identification alarm device and identification method thereof |
| JP2017110909A (en) * | 2015-12-14 | 2017-06-22 | 東日本旅客鉄道株式会社 | Crack width measurement device |
| CN107063095A (en) * | 2016-12-23 | 2017-08-18 | 张晓明 | A kind of warning system for real time monitoring of existing building building structure fracture width change and recognition methods |
| CN107941170A (en) * | 2017-12-15 | 2018-04-20 | 武汉夕睿光电技术有限公司 | Road detection apparatus and system |
| CN110793968A (en) * | 2018-08-02 | 2020-02-14 | 由田新技股份有限公司 | Detection equipment for identifying pore wall defects |
| CN109341542A (en) * | 2018-10-29 | 2019-02-15 | 福建省智能养护工程有限公司 | Method and its monitoring device based on digital signal sequences length identification fracture width |
| CN210862544U (en) * | 2019-10-15 | 2020-06-26 | 昆山市交通科技研究中心有限公司 | Roadbed crack width value real-time monitoring device |
| CN111947561A (en) * | 2020-08-25 | 2020-11-17 | 浙江同禾传感技术有限公司 | Low-power-consumption pull rope type crack meter and use method thereof |
| CN217425241U (en) * | 2022-06-07 | 2022-09-13 | 常州市建筑科学研究院集团股份有限公司 | Multifunctional building crack detection device |
| CN115165736A (en) * | 2022-06-20 | 2022-10-11 | 深圳市久久犇自动化设备股份有限公司 | AOI module automatic check out test set |
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Application publication date: 20230131 |