CN110705017A - Model disassembling and assembling simulation system and simulation method based on AR - Google Patents
Model disassembling and assembling simulation system and simulation method based on AR Download PDFInfo
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- CN110705017A CN110705017A CN201910795087.9A CN201910795087A CN110705017A CN 110705017 A CN110705017 A CN 110705017A CN 201910795087 A CN201910795087 A CN 201910795087A CN 110705017 A CN110705017 A CN 110705017A
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- 238000004088 simulation Methods 0.000 title claims abstract description 31
- 230000000712 assembly Effects 0.000 claims abstract description 24
- 238000000429 assembly Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 20
- 238000011900 installation process Methods 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000012549 training Methods 0.000 abstract description 6
- 238000004904 shortening Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
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Abstract
The invention discloses an AR-based model disassembly and assembly simulation system and a simulation method, wherein the disassembly and assembly simulation system comprises a component to be disassembled or installed, and a plurality of component labels are arranged on the component; the system comprises a platform, a display and a database, wherein an image acquisition device, an image processing device, the display and the database are arranged on the platform; and the image processing device judges whether the two assemblies are correctly disassembled or assembled by comparing the relative positions of the two assemblies on the platform with the correct relative positions of the two assemblies in the assembly model library in the database. The invention adopts a mode of combining virtual and real physical worlds to guide the assembly of parts, thereby shortening the training period of workers and reducing the cost.
Description
Technical Field
The invention relates to the technical field of AR (Augmented Reality), in particular to a model disassembly and assembly simulation system and a simulation method based on the AR technology.
Background
In a training scene of school or enterprise staff, the structure and the principle of a part are often known by dismounting the part, for complex devices, disassembly and assembly are difficult, in most teaching processes, a plurality of parts are disassembled and assembled by groups by a plurality of people, teachers cannot simultaneously observe whether each group of parts are disassembled and assembled correctly and whether parts are missing or not, the fasteners are selected correctly, the installation directions are correct or not, some wrong installation is not obvious and is not easy to be found by visual inspection, even some internal fasteners are selected incorrectly and cannot be fastened, after the outer-layer parts are installed, the internal installation relationship is shielded and is not easy to be found, if the teacher does not observe the error all the way, the teacher cannot easily find the error, and if the error cannot be corrected in time in the training process, the incorrectly assembled parts can cause serious faults and cause loss when being used in industrial production.
In order to improve the training efficiency of model disassembly and assembly, the invention provides a technical means based on AR technology to solve the problems
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an AR-based model disassembly simulation system and an AR-based model disassembly simulation method, which guide the assembly and disassembly of a model in a mode of combining virtual and real physical worlds, can shorten the training period of trainees, and reduce the cost.
The invention provides an AR-based model disassembly and assembly simulation system, which monitors and guides the disassembly and assembly process of a component through an AR technology, can prompt a disassembly step during disassembly, checks whether the disassembly process is complete, and can prompt and monitor an assembly step during assembly; specifically, the model disassembly and assembly simulation system based on AR comprises a disassembled component and a platform, wherein the disassembled component is placed on the platform, the disassembled component is provided with a plurality of component labels, the platform is provided with an image acquisition device, the model processing device, a display and a database, the display comprises an information interaction device (a touch screen), the database comprises a model library, a relation library and a step library, the model library comprises a component model, a part model and an assembly model, the part model comprises models of all parts forming the disassembled component, each model comprises independent part id and part coordinate information, the component model comprises a component id and each part id information forming the component, each component comprises component coordinate information, the position information of the parts in the component (the component can be formed by the parts and also can be formed by other components and parts, the assembly model is an integral form of assembly of the component, the assembly is also a component model, the image processing device is used for identifying a component label, the component label records component id information of a corresponding component, and the image processing device can identify and extract the component id information recorded by the component label, extract the component model corresponding to the component id from a database and display the component model on a display; the step library records the step of disassembling and assembling each component.
The platform is further provided with a reference position label, the image acquisition device and the image processing device judge whether the assembly is disassembled or not by judging the relative position of the assembly label and the reference position label, otherwise, the relative positions of the two assembled assemblies and the relative position of the two assembled assemblies and the reference position do not move relatively within a certain time, the two assembled assemblies are judged to be assembled, and whether the two assembled assemblies are assembled correctly or not is judged by the correct relative positions of the two assembled assemblies in the assembly model library.
The invention also provides an AR-based model disassembly and assembly simulation method, which comprises the following disassembly processes:
step 1, initializing an assembly body by a system, and finding information of a component tag identification assembly body;
step 2, recording the relative position of the component label and the reference position label in the image acquired by the image acquisition device;
step 3, waiting for the relative position of a certain assembly to change, and then considering the assembly to be disassembled;
step 4, judging whether the disassembly step is correct or not according to the disassembly step information recorded in the step library;
step 5, if the assembly is correct, repeating the steps 3 and 4 until all the assemblies are disassembled;
and 6, if the assembly is incorrect, prompting by a display, and waiting for the assembly to be initialized and then carrying out the disassembly process again.
Further, the method includes an installation process of:
step 1, initializing an assembly body by a system, finding a component label and identifying assembly body information;
step 2, waiting for the two component labels to keep still at the relative positions, keeping the two components and the reference position label at the relative positions for a period of time, and recording that the two components are being installed;
step 3, collecting the relative position information of the two assemblies, acquiring the correct relative position information of the two assemblies from the corresponding assembly library, and judging whether the installation is correct or not;
step 4, if the installation is wrong, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
step 5, if the installation is correct, judging whether the installation process is correct or not through the step library;
step 6, if the installation is incorrect, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
and 7, if the installation process is correct, repeating the steps 2-6 until the assembly body is installed.
Compared with the prior art, the system and the method provided by the invention have the advantages that parts are sequentially selected according to the selected assembly body and the corresponding steps for assembly or disassembly, AR technology is used for outputting demonstration, the obtained images are identified by obtaining the images of the operating table, whether the assembly or disassembly of the current step is finished or not is determined, the next assembly step is carried out when the current step is finished, the process is repeated until all steps of the part assembly or disassembly program of the product are finished, the dynamic guidance of part assembly is realized, the training period of workers can be shortened, and the cost is reduced.
Drawings
The features and advantages of the present invention will become more readily appreciated from the detailed description section provided below with reference to the drawings, in which:
FIG. 1 is a diagram illustrating an AR-based model disassembly and assembly simulation system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a model disassembly and assembly simulation method based on AR according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another AR-based model disassembly simulation method according to an embodiment of the present invention;
Detailed Description
To solve the problems in the prior art, an embodiment of the present invention provides an AR-based model disassembly and assembly simulation system, which specifically includes, as shown in fig. 1:
the assembly to be disassembled or installed is provided with a plurality of assembly labels;
optionally, the assembly tag comprises a ball type; the ball type is a spherical label, and the ball type label can be fixedly connected with the component body through a connecting column;
the ball type tag is used for a component tag outside the assembly body, and is used for enlarging the identification range and preventing the tag from being unidentifiable when the tag is back to the image acquisition device;
optionally, the component tag includes a patch type, and a tag of a component or a part inside the assembly body may be set to be a patch type;
optionally, the component tag is provided with a feature point, and the feature point includes id information and coordinate information of the current component; the image acquisition device and the image recognition device acquire the current direction of the components through the characteristic points, calculate the distance information of the two components after acquiring the direction information of the components, and judge whether the assembly is correct or not by comparing the distance information with the distance in the model base.
The system comprises a platform, a display and a database, wherein an image acquisition device, an image processing device, the display and the database are arranged on the platform;
optionally, the display is a touch screen.
The image acquisition device is used for acquiring an image of the component label;
the image processing device can identify and extract the component id information recorded by the component label, and extract a component model corresponding to the component id from the database to be displayed on the display;
the image processing device judges whether the component is detached or installed by judging the relative position of the component label and the reference position label;
the image processing device judges whether the two assemblies are correctly disassembled or assembled by comparing the relative positions of the two assemblies on the platform with the correct relative positions of the two assemblies in the assembly model library in the database.
Optionally, the database includes a model library, a relation library and a step library; the model library comprises component models, part models and assembly body models; the relational library comprises coordinate position and direction information of parts forming the assembly; the step library records the steps of disassembly and assembly of each component.
Optionally, the component model includes a component id and information of each part id constituting the component, each component includes component coordinate information and position information of parts in the component; the part model comprises models of all parts forming the assembly, and each model comprises independent part id and part coordinate information; the assembling body model is an integral form of assembly of the components.
Optionally, the step library records the types and the number of the disassembled fasteners in each step, and can prompt the number of the fasteners of different types which should be left after the current step is completed through a display after the corresponding step is executed, so as to facilitate timely checking whether the fasteners are neglected or mistakenly installed.
Preferably, the system further comprises a learning mode and a testing mode, wherein the display can prompt the next operation in advance in the learning mode and actively prompt the correct number of the types of the remaining fasteners; the test mode can not prompt the next operation, if the disassembling and assembling process has errors, the wrong content is prompted, the type of the fastener is prompted after the key steps or all the steps are completed, the corresponding residual quantity needs to be manually input, and if the errors occur, the prompt is triggered.
As shown in fig. 2, another embodiment of the present invention provides an AR-based model disassembly simulation method, which specifically includes:
step 1, initializing an assembly body by a system, and finding information of a component tag identification assembly body;
step 2, recording the relative position of the component label and the reference position label in the image acquired by the image acquisition device;
step 3, waiting for the relative position of a certain assembly to change, and then considering the assembly to be disassembled;
step 4, judging whether the disassembly step is correct or not according to the disassembly step information recorded in the step library;
step 5, if the assembly is correct, repeating the steps 3 and 4 until all the assemblies are disassembled;
and 6, if the assembly is incorrect, prompting by a display, and waiting for the assembly to be initialized and then carrying out the disassembly process again.
Further, the above-mentioned disassembly steps are not exclusive, in the sense that for an assembly it is necessary to disassemble parts of the assembly in sequence, since these parts may interfere with each other, thus requiring a subsequent disassembly. Thus, the steps in the library are created from modules, and the same module can have multiple disassembly steps, and for a multi-module assembly, the disassembly step for disassembling the assembly is to disassemble the module and the part constituting the assembly, and each module has an independent disassembly step.
The method can simultaneously carry out a plurality of disassembling processes, and when the assembling machine is not disassembled, the assembling and disassembling processes are started when a certain component is detected to be disassembled, and the assembling and disassembling processes are reserved.
For example, assembly a includes component B1, B2, B3, and part B4, component B1 includes parts C1, C2; when the assembly body A is disassembled, the B1 is disassembled, other assemblies and parts are not disassembled, the A disassembling process is not completed, the B1 is disassembled at the moment, the parts C1 and C2 are disassembled, the disassembling process of the assembly B1 is carried out, the A disassembling process is reserved, and error information cannot be prompted.
The purpose of the above preferred embodiment is to set the verification of the disassembling step to prevent the mutual influence and blocking of the two components or parts, for example, the condition that the component B cannot be positioned due to the fact that the component A is disassembled first is considered, otherwise, the verification of the assembling step is set to have a similar effect, and the operator can be prompted by triggering an error prompt, so that other disassembling modes, for example, disassembling the component one by one after the component assembly is disassembled or disassembling the component assembly first, and then continuously disassembling the assembly after the component assembly is disassembled, and the error prompt is not triggered.
As shown in fig. 3, another embodiment of the present invention provides an AR-based model installation simulation method, which specifically includes:
the method is characterized by comprising the following steps:
step 1, initializing an assembly body by a system, finding a component label and identifying assembly body information;
step 2, waiting for the two component labels to keep still at the relative positions, keeping the two components and the reference position label at the relative positions for a period of time, and recording that the two components are being installed;
step 3, collecting the relative position information of the two assemblies, acquiring the correct relative position information of the two assemblies from the corresponding assembly library, and judging whether the installation is correct or not;
step 4, if the installation is wrong, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
step 5, if the installation is correct, judging whether the installation process is correct or not through the step library;
step 6, if the installation is incorrect, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
and 7, if the installation process is correct, repeating the steps 2-6 until the assembly body is installed.
Optionally, the step library in the database records a plurality of installation methods of the assembly body, and matches corresponding installation steps according to the current installation component or part, and only when the current installation step is inconsistent with all records of the step library, generates error information.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the specific embodiments described and illustrated in detail herein, and that various changes may be made therein by those skilled in the art without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. An AR-based model disassembly and assembly simulation system, the system comprising:
the assembly to be disassembled or installed is provided with a plurality of assembly labels;
the system comprises a platform, a display and a database, wherein an image acquisition device, an image processing device, the display and the database are arranged on the platform;
the image acquisition device is used for acquiring an image of the component label;
the image processing device can identify and extract the component id information recorded by the component label, and extract a component model corresponding to the component id from the database to be displayed on the display;
the image processing device judges whether the component is detached or installed by judging the relative position of the component label and the reference position label;
the image processing device judges whether the two assemblies are correctly disassembled or assembled by comparing the relative positions of the two assemblies on the platform with the correct relative positions of the two assemblies in the assembly model library in the database.
2. The model disassembly simulation system of claim 1, wherein the database comprises a model library, a relational library, and a step library; the model library comprises component models, part models and assembly body models; the relational library comprises coordinate position and direction information of parts forming the assembly; the step library records the steps of disassembly and assembly of each component.
3. The model disassembly simulation system of claim 2, wherein the component model includes a component id and information of each part id constituting the component, each component includes component coordinate information, position information of parts in the component; the part model comprises models of all parts forming the assembly, and each model comprises independent part id and part coordinate information; the assembling body model is an integral form of assembly of the components.
4. The model disassembly simulation system of claim 1, wherein the component tags comprise a sphere; the ball type is a spherical label and can be fixedly connected with the component body through a connecting column.
5. The model disassembly simulation system of claim 1, wherein the component label comprises a patch type, and the label of the component or part inside the assembly body can be set to the patch type.
6. The model disassembly and assembly simulation system of claim 1, wherein the component label is provided with a feature point, and the feature point has id information and coordinate information of the current component; the image acquisition device and the image recognition device acquire the current direction of the components through the characteristic points, calculate the distance information of the two components after acquiring the direction information of the components, and judge whether the assembly is correct or not by comparing the distance information with the distance information in the model base.
7. The model disassembly simulation system of claim 1, wherein the system comprises a learning mode and a testing mode, wherein the display is capable of prompting a next operation in advance, actively prompting the correct number of remaining fastener types; the test mode can not prompt the next operation, if the disassembling and assembling process has errors, the wrong content is prompted, the type of the fastener is prompted after the key steps or all the steps are completed, the corresponding residual quantity needs to be manually input, and if the errors occur, the prompt is triggered.
8. A component disassembly simulation method of the model disassembly simulation system according to claim 1, the method comprising:
step 1, initializing an assembly body by a system, and finding information of a component tag identification assembly body;
step 2, recording the relative position of the component label and the reference position label in the image acquired by the image acquisition device;
step 3, waiting for the relative position of a certain assembly to change, and then considering the assembly to be disassembled;
step 4, judging whether the disassembly step is correct or not according to the assembly disassembly step information recorded in the step library;
step 5, if the assembly is correct, repeating the steps 3 and 4 until all the assemblies are disassembled;
and 6, if the assembly is incorrect, prompting by a display, and waiting for the assembly to be initialized and then carrying out the disassembly process again.
9. A component mounting simulation method of a model disassembly simulation system according to claim 1, the method comprising:
step 1, initializing an assembly body by a system, finding a component label and identifying assembly body information;
step 2, waiting for the two component labels to keep still at the relative positions, keeping the two components and the reference position label at the relative positions for a period of time, and recording that the two components are being installed;
step 3, collecting the relative position information of the two assemblies, acquiring the correct relative position information of the two assemblies from the corresponding assembly library, and judging whether the installation is correct or not;
step 4, if the installation is wrong, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
step 5, if the installation is correct, judging whether the installation process is correct or not through the step library;
step 6, if the installation is incorrect, prompting error information through a display, and waiting for the assembly body to be initialized and then carrying out the installation process again;
and 7, if the installation process is correct, repeating the steps 2-6 until the assembly body is installed.
10. The method for simulating the disassembly of a module of claim 8, wherein the disassembly steps of the assembly recorded in the library are not unique and there are multiple independent disassembly steps for each module; therefore, a plurality of disassembly processes can be carried out simultaneously, when the assembly body is not disassembled, the assembly disassembly process is started to be assembled when a certain assembly is detected to be disassembled, the disassembly process of the original assembly body is reserved, and no error information is generated.
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| CN112328818A (en) * | 2020-10-15 | 2021-02-05 | 费斯托教学股份有限公司 | Wastewater simulation treatment device and installation error and correction recognition system thereof |
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| CN115019578A (en) * | 2022-05-18 | 2022-09-06 | 湖南铁道职业技术学院 | Component dismounting training method and system |
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