KR102634016B1 - Web based digital twin service method - Google Patents

Abstract

The present invention relates to a digital twin service method, which consists of a web server 30 to which a CPS (Cyber Physical System) is connected, a computer 10 equipped with a web browser, and an IP device 51, The original model object (45) of the constructed CPS is reduced to an overview model object (47), which is processed through the web page (20), and the IP device (51) creation information can also be expressed as a web standard document. .
Through the present invention, the computational resources required for the overall construction and use of digital twins can be dramatically reduced and a CPS specialized for the purpose of use can be easily constructed, which has the effect of expanding the distribution of digital twins and improving utilization. there is.

Description

Web-based digital twin service method {WEB BASED DIGITAL TWIN SERVICE METHOD}

The present invention relates to a digital twin service method, which consists of a web server 30 to which a CPS (Cyber Physical System) is connected, a computer 10 equipped with a web browser, and an IP device 51, The original model object (45) of the constructed CPS is reduced to an overview model object (47), which is processed through the web page (20), and the IP device (51) creation information can also be expressed as a web standard document. .

A digital twin (Digital Twin) is a digital data model that replicates physical objects such as structures, buildings, factories, facilities, or products that already exist in reality or are planned for installation or production, and exchanges information through communication between the physical detection means and the digital data model. As Twin) technology develops and spreads, digital twin-based technology or linked technology is being used in various industrial fields.

The digital twin is the above-mentioned digital data model, which is built by merging detailed specification information, etc. into a 3D model with the same shape and structure as the real thing, and a CPS (Cyber Physical System, Virtual Physical System), which is mounted on or linked to the real thing to store data as 1. An Internet of Things (IoT) device used in tea production, an IP device (Internet Protocol Device) 51 that performs various measurements, filming or sensing, and a communication path that is an information exchange path with objects in the real world, that is, various structures or facilities. It consists of a communication network that performs communication with the IP device 51 mounted on the back.

Currently commercially available digital twins are mainly used for identifying the status of large structures or facilities, identifying history and plan information, and conducting remote inspections or simulations. Among the components of a digital twin, most of them are in the CPS (Cyber Physical System). It can be said that the role is concentrated.

In particular, in the case of large-scale social infrastructure such as roads or bridges, or multi-use facilities such as large buildings, stadiums, and performance halls, physical experiments or actual tests are impossible or have significant restrictions in overall planning, design, construction, and maintenance. When planning or applying simulated operations through the appropriate use of digital twin-based CPS, various effects can be expected, such as securing safety and increasing convenience, as well as economic benefits.

Accordingly, various technologies related to the construction and use of digital twins for various large structures and urban facilities are being developed, and related conventional technologies include Patent No. 2448724.

Conventional digital twin or CPS technology for structures, including Patent No. 2448724, visualizes and displays the form and structure of large structures or urban facilities as well as changes in status over time, various sensed information, and history information in three dimensions, which is a traditional flat surface. The advantages compared to drawing-based facility management or list-based asset management are clear.

In particular, the image generated by operating the CPS can be said to be comparable to or even superior to a real image captured in reality in terms of morphological accuracy and visibility of each element, and can be compared to the IP device 51 such as the above-mentioned actual mounted sensor. The CPS-generated image can be updated by reflecting real-time changes in the state of the physical object through communication. In theory, the physical object of the digital twin, that is, the planning, design, construction, and Work efficiency can be dramatically improved throughout use and maintenance.

However, the above-mentioned specific point of the digital twin is established on the premise of smooth operation of each component of the digital twin, especially the CPS, and if a delay or failure occurs in the operation of the CPS, the benefits in structure planning or maintenance work due to the introduction of the digital twin may be damaged. It is inevitable, and due to the nature of the digital twin in which all components are organically connected and behave, failure or error in any part of the configuration directly leads to loss of function of the entire system, resulting in a ripple effect compared to traditional analog work processing or general decision support systems. It can't help but be big.

In addition, as mentioned above, CPS, a key element of digital twin, not only integrates geometric information such as the location and shape of the detailed composition of the object to be built in a three-dimensional manner, but also collects various sensing information and history information as well as specific specifications. As a result, enormous computational resources are inevitably consumed not only in the construction of the CPS itself but also in its overall operation.

This characteristic of digital twins' computer resource requirements is not only a problem that directly leads to an increase in digital twin construction costs, but can also be said to be a factor that hinders the spread and utilization of digital twins. As a result, the main demand for building and utilizing digital twins is It is limited to public institutions or large-scale business entities, and the use of digital twins is also limited to the management and monitoring of public facilities or large-scale business sites.

In particular, the construction and operation of CPS, which is the core component of the digital twin, not only requires expensive 3D modeling software and professional technicians who can utilize it to create and operate the model objects that make up the CPS, but also requires related information. Because the collection and processing of data requires a huge amount of money and time, there are inevitably significant restrictions on the construction or use of digital twins for small business entities or the general public.

Taking the above-mentioned problems into consideration, the present invention was created to dramatically reduce the computational resources required for the overall construction and use of digital twins and to enable the production and operation of digital twin CPS without advanced professional technology or specialized equipment. , In the web-based digital twin service method, a computer 10 connected to the Internet, a web page 20 built on the Internet, a web server 30 connected to the web page 20, and a web server 30. In the raw CPS (40), which is composed of a dedicated CPS (41) that is connected to and includes a number of outline model objects (47), and an IP device (51) connected to the dedicated CPS (41), the shape and structure of the real thing are reflected. An input step (S10) in which information on the primitive model object 45 is extracted and input to the web server 30, and the web server 30 abbreviates the information on the primitive model object 45 to generate an overview model object 47. A reduction step (S20) and a construction step in which the web server 30 uses the IP information of the IP device 51 to build a dedicated CPS 41 by connecting the general model object 47 and the IP device 51. (S30), an update step (S40) in which the dedicated CPS (41) queries the IP device (51) and updates the general model object (47) according to the information transmitted by the IP device (51), and the web server (30) It consists of an output step (S51) of outputting the outline model object 47 through a web page 20 and a browsing step (S52) of the web browser of the computer 10 browsing the web page 20. It is a web-based digital twin service method characterized by:

In addition, the present invention includes a request step (S60) in which the web browser of the computer 10 requests the web server 30 to create a web standard document after performing the construction step (S30), and the web browser 30 A presentation step (S70) of accepting the request, querying the dedicated CPS (41), and outputting the available IP device (51) information to the web page (20), and the web browser of the computer (10) displays the web page (20). ), a designation step (S80) of designating the IP device 51, and the web server 30 queries the dedicated CPS 41 and creates a web standard document containing transmission information of the designated IP device 51. A creation step (S90) and a confirmation step in which the web server 30 outputs the created web standard document through the web page 20 and the web browser of the computer 10 searches the web standard document through the web page 20. It is a web-based digital twin service method characterized by (S91).

Through the present invention, the computational resources required for the overall construction and use of digital twins can be dramatically reduced and a CPS specialized for the purpose of use can be easily constructed, which has the effect of expanding the distribution of digital twins and improving utilization. there is.

In particular, by allowing the overall construction and operation of the digital twin to be performed through a web browser that processes web standard documents, digital twin-related services can be utilized without the need for advanced specialized technology or expensive dedicated equipment and software.

In addition, not only can users freely change the CPS configuration of the digital twin, but this can also be done through a web browser, which can promote the introduction and application of digital twin technology not only in various industrial fields but also in life as a whole. This can revitalize related industries and create new added value.

1 is a system configuration diagram of the present invention
Figure 2 is a flow chart of the present invention
Figure 3 is an example computer screen of the input stage of the present invention
Figures 4 to 7 are exemplary computer screens of the abbreviation stage and construction stage of the present invention.
Figure 8 is an example computer screen of the update step and output step of the present invention.
9 is a flow chart of a modified embodiment of the present invention.
Figure 10 is an example computer screen of the designation step in the embodiment of Figure 9
11 to 13 are exemplary computer screens in the confirmation step of the embodiment of FIG. 9.

The detailed configuration and implementation process of the present invention will be described through the attached drawings as follows.

First, Figure 1 is a configuration diagram showing each component of a system for performing the present invention and the connection relationships between these components. As shown, the system for performing the present invention includes a plurality of user computers (10) connected to the Internet. ), a web page 20 built on the Internet, connected to the web server 30, and operated by the web server 30, and a primitive CPS (original Cyber Physical System) as a virtual physical system that constitutes a digital twin ( 40) and a dedicated CPS (41), and an IP device (Internet Protocol Device) (51) connected to the dedicated CPS (41) through a communication network.

In this configuration of the present invention, a plurality of computers 10 may be applied as the computer 10, as illustrated in FIG. 1, and this is not limited to simply meaning that multiple users utilize the present invention service at the same time. When users of the service of the present invention are classified into user status that can be classified as a producer or consumer of the service, or user qualifications that can be classified by access and operation rights to the system, computers with various user statuses or user qualifications are provided. This means that (10) can be applied as a system component of the present invention.

In other words, as the name of the invention suggests, the present invention is a service operated or provided based on the web, and the information distributed during the performance of the invention is a web standard document, which is an electronic document that can be viewed by a web browser. It is processed in the form of a general model object of the dedicated CPS 41, which will be described later, through a web browser installed as an application program on the computer 10 owned by the manager or user of the physical structure to which the digital twin is applied, which can be said to be a consumer of the service. Not only can all information provided, including (47), be used, but also a digital twin construction or operation engineer applying the present invention, who can be said to be a producer of the service, can also use the web browser installed as an application program on his or her own computer (10), as described later. The original CPS (40) and dedicated CPS (41) can be viewed, viewed, built, and operated.

Therefore, as shown in FIG. 1, the web page 20 that mediates the computer 10 and the web server 30, along with the web browser mounted on the computer 10, uses the raw CPS 40 during the construction process of the system of the present invention. In addition to performing the function of a computer tool that performs processing related to the dedicated CPS 41, it also functions as a means of providing the service of the present invention to consumers in the process of utilizing the service of the present invention.

Of course, in the above-described web page 20, the URL (Uniform Resource Locator) of the web page 20 for system construction and the web page 20 for service provision may be set differently.

In the present invention, the web server 30 is a server that operates the web page 20 and substantially leads the performance of the present invention. In FIG. 1, the web page 20 and the dedicated CPS 41 are the web server 30. Although it is illustrated as being constructed separately from the web server 30, this shows the connection relationship in information processing between the web server 30, the web page 20, and the dedicated CPS 41, and is actually a storage device of the web server 30. A web page 20 or a dedicated CPS 41 may be constructed.

As in a normal digital twin CPS, a number of IP devices 51 can be connected to the dedicated CPS 41 directly connected to the web server 30. These IP devices 51 include various sensors, various detectors, and various measurement devices. Image information acquisition devices such as GPS and IP cameras, various measuring devices such as watt-hour meters, and various weather observation equipment such as wind sensors can be applied.

This IP device 51 is selectively configured according to the characteristics of the physical structure to which the present invention's digital twin is applied. For example, if the physical structure is a large building, a watt hour meter and a heat meter that can determine energy consumption, CCTV cameras inside and outside the building, or a water supply flow meter, etc. It can be applied as an IP device (51) by connecting to a TCP/IP-based wired/wireless communication network or a low-power short-distance wireless network. If the actual structure is a bridge, it can be used as an energy consumption detection device such as a watt-hour meter, as well as water level and weather observation equipment, load, and structure. Measuring equipment that measures deformation, etc., or traffic detection equipment, etc. can also be connected to a communication network and applied as the IP device 51.

As described above, the computer 10 for performing the present invention is equipped with a web browser, which is an application program of the operating system of the computer 10 and a client program connected to the web server 30 through the web page 20. This web browser is a commercial web browser currently in service, and is capable of performing the present invention as well as viewing web-based electronic documents on general Internet sites.

In addition, the web browser equipped with the computer 10 is equipped with a plug-in for smooth performance of the present invention, which is a web-based digital twin service, or a function patch, sub-program, or program module of the web browser. Modification of the web browser may be preceded in the form of modifications to the general web browser. Despite this modification to the general web browser, the web browser used in the present invention is modified based on a general commercial web browser, and is based on web standards information. Since the identity of the web browser as processing is maintained, there is no distinction between a modified web browser and a general commercial web browser throughout the entire process of the present invention, which will be described later.

Accordingly, the web browser that implements the present invention has the ability to output and process image information in video format as well as still images, as well as generating CPS-related components, including model objects containing a large number of in-depth geometric information. (generation), and may be given the function to output and process model objects and related information, and this function is provided by the server program of the web server 30 to which the web browser, which is the client in the present invention, is connected. This can be preceded by modifying the web browser through information and control.

As described above, in the system for performing the present invention, the main entity that leads the overall service is the web server 30, and the web server 30 is connected to the web browser, which is a client program, through the web page 20 and is connected to the CPS. The model information, that is, the primitive model object 45 of the primitive CPS 40 and the outline model object 47 of the dedicated CPS 41, are substantially processed.

In Figure 1, in illustrating the connection state between each component performing the present invention, the web server 30 and the dedicated CPS 41 are connected by a solid line, while the web server 30 and the native CPS 40 are connected by a virtual line. It is connected to , which expresses that the raw CPS 40 may be pre-built in an information device separate from the web server 30 and connected to the web server 30 through a communication network such as the Internet.

In other words, the digital twin CPS used in the actual provision of the service in the present invention can be said to be a dedicated CPS (41) directly connected to the web server (30), which is the IP device (51), which is the first producer of information in the digital twin. ) can be confirmed by being connected to the dedicated CPS (41), and therefore, the original CPS (40) is temporarily connected to the web server (30) when first constructing the dedicated CPS (41) to provide necessary information or During operation of (41), it is intermittently connected to the web server (30) to provide necessary information.

This is due to the fact that the main purpose of the present invention includes improving user convenience and saving computational resources through simplification of CPS. In the present invention, the raw CPS 40 is a pre-built existing CPS that provides full control of the actual digital twin. While it can be said to be a CPS composed of a detailed primitive model object 45, the dedicated CPS 41 is a CPS whose structure is simplified by erasing or replacing the upper part of the information provided in the primitive model object 45. , in fact, the original CPS 40 does not need to be operated at all times throughout the performance of the service of the present invention.

In particular, when continuous or periodic updating of the outline model object 47 constituting the dedicated CPS 41 is not necessary due to the characteristics of the digital twin physical structure of the present invention, the information related to the raw CPS 40 is stored when the dedicated CPS 41 is first built. As necessary, as shown in FIG. 1 where the web server 30 and the primitive CPS 40 are connected by a virtual line, when the dedicated CPS 41 is first built, the primitive model object 45 information in the primitive CPS 40 is The present invention may also be carried out by inputting data one-time into the web server 30.

Of course, the web server 30 and the original CPS 40 of the present invention may remain connected at all times, which is mainly a situation in which the original CPS 40 is built in an information device separate from the web server 30, for example. A situation can be assumed where the digital twin constructed as a public good such as a smart city is combined with the system of the present invention, and the CPS of the public digital twin is connected to the web server 30 as the original CPS 40. In this case, it is also possible to operate at all times. Since the CPS can be said to be a separately built dedicated CPS (41), the aforementioned computational resource saving effect can be expected.

In addition, as illustrated in FIG. 1, the computer 10, which is an information device actually used by the user in the present invention, includes a typical desktop computer as well as a portable touch screen information device such as a portable laptop computer or a smartphone. All can be applied, and the connection method between the computer 10 and the web page 20 can be applied to various wireless networks such as a wired network as well as a wireless LAN.

The present invention, which is carried out by the system configured as above, is as shown in FIG. 2, where information on the primitive model object 45 is extracted from the primitive CPS 40 reflecting the shape and structure of the actual object and input into the web server 30. It begins with the input step (S10).

That is, the input step (S10) is a step in which the raw CPS 40 and the web server 30 are connected as shown in FIG. 1, and all of the information of the raw model object 45 constituting the raw CPS 40, or the raw This is a process in which some practically necessary information of the model object 45 is input to the web server 30, and this input is performed by connecting the web server 30 and the raw CPS 40 providing server through a communication network or by connecting the raw CPS 40 to the web server 30. This can be performed by connecting the web server 30 with a storage medium containing information on the primitive model object 45 of (40).

In this way, the user's information confirmation and processing operations required for performing the input step (S10) of the present invention as well as various steps to be described later are performed through a web browser mounted on the computer 10 and a web page connected to the web server 30 ( 20), and FIG. 3 illustrates the state in which the web page 20 is output on the screen of the computer 10 when performing the input step (S10). As in the same figure, the web page of the computer 10 The primitive model object 45 of the primitive CPS 40 is displayed three-dimensionally on the web page 20 output through the browser.

Afterwards, as shown in FIG. 2, a reduction step (S20) is performed in which the web server 30 abbreviates the information of the primitive model object 45 to create an overview model object 47, which is This is done by erasing, simplifying, or replacing some of the constituting geometric information or other attribute information.

In addition, after the reduction step (S20) is performed, the web server 30 uses the IP information of the IP device 51 to connect the general model object 47 and the IP device 51 to establish a dedicated CPS 41. The construction step (S30) of constructing is performed, thereby enabling the dedicated CPS 41 to act as a CPS of an actual digital twin.

In other words, the primitive model object 45 information of the primitive CPS 40 corresponding to each member or part of the digital twin physical structure includes geometric information that specifies in detail the shape, dimensions, and spatial location of each physical member or part. It may consist of attribute information that specifies the physical properties, specifications, and history of each physical member or part. If all of these primitive model object 45 information is processed without any reduction, not only will a huge amount of computing resources be consumed, but the web Since problems may occur even in processing as a standard document, the reduction step (S20) is performed as a process to simplify the information of the primitive model object 45.

In performing this reduction step (S20), a specific method of generating the general model object 47 by abbreviating the information of the primitive model object 45 is to delete part of the configuration of the primitive model object 45 or to reduce the information of the primitive model object 45. (45) Various methods can be applied, such as deleting or replacing specific information among the entire information, or deleting or replacing specific information inherent only in some categories of primitive model objects (45).

In other words, in general CPS, model objects have a stratigraphic system according to the characteristics of the corresponding components of the digital twin object, and a method of deleting or modifying model objects of a specific layer is applied. This can be done, examples of which are illustrated in Figures 4 to 7.

First, Figure 4 simplifies the geometric information by deleting some of the geometric information of the entire model object constituting the CPS, and shows the same drawing and the primitive model in the state before performing the above-described reduction step (S20) and construction step (S30). As can be confirmed by comparing FIG. 3 showing the object 45, each member constituting the bridge, which is the actual structure of the digital twin, is expressed in the same way as the actual structure in FIG. 3, while some geometric information has been deleted. In Figure 4, which is the model object 47, only the center line or outline of each member is expressed.

In addition, Figure 5 is an example of completely erasing the model object of a specific layer, where the original model object 45 corresponding to the upper truss, slab, and pier of a bridge, which is a real structure, is each composed of separate layers. As the CPS (40) is converted to the dedicated CPS (41), the outline model object (47) illustrates a state in which the entire layer corresponding to the upper truss has been deleted, which is a digital twin of the present invention for performing traffic management tasks on the bridge. In applying, it can be usefully used when it is necessary to drastically simplify the bridge structure and efficiently display only necessary information such as traffic volume.

Figure 6 is a compromise between the examples of Figures 4 and 5 described above, in which model objects of some floors are simplified. In Figure 6, it can be seen that the geometric information of the outline model object 47 corresponding to the upper truss has been simplified.

Meanwhile, Figure 7 shows an overview model object (47) created by replacing specific information among the information constituting the primitive model object (45), rather than by collectively erasing specific information of the model object or model objects of a specific layer. As an example, in the illustrated embodiment, the coordinates of a specific axis among the geometric information of the model object are replaced with a single constant, so that the model object, which was expressed as a three-dimensional object in the primitive model object 45, is replaced by a single constant in the outline model object 47. It is expressed in two dimensions.

In particular, this replacement of geometric information can significantly reduce the amount of processing information while maintaining the usability of the model object. As in the case of FIG. 7, when the goal of utilizing digital twins is to monitor the increase or decrease in water level under the bridge, the A two-dimensional display may be more advantageous than a three-dimensional display when checking the water level.

In this way, when the construction of the dedicated CPS 41 of the digital twin of the present invention is completed through the construction step (S30), the updating step (S40) to the viewing step (S52) can be performed subsequently, as shown in FIG. 2.

This update step (S40) to the viewing step (S52) is a step of substantially utilizing the digital twin-only CPS (41) of the present invention constructed through the above-described input step (S10) to construction step (S30), and is an update step. In (S40), the dedicated CPS (41) queries the IP device (51) and updates the outline model object (47) according to the transmitted information of the IP device (51), and in the output step (S51), the web server (30) ) outputs the outline model object 47 through the web page 20, and in the browsing step (S52), the web browser of the computer 10 browses the web page 20.

Figure 8 illustrates the screen of the computer 10 in the update step (S40) and the output step (S51) of the present invention. The screen of the computer 10 of Figures 3 to 7 described above is used by the producer of the service of the present invention, that is, If the screen is the computer 10 of a technician who builds the digital twin of the present invention, Figure 8 is the computer 10 screen of a consumer of the service of the present invention, that is, a user who manages or uses the physical structure of the digital twin of the present invention. These differences are When comparing the web browser screen illustrated in FIGS. 3 to 7 with the web browser screen illustrated in FIG. 8, it can be confirmed that the menu for operation is excluded from the consumer screen of FIG. 8.

However, in the present invention, the above-mentioned producer and consumer do not necessarily need to be different entities, and the construction and utilization of the system may be performed by the same entity, so the producer and consumer may be the same.

In Figure 8, the bridge is applied as a digital twin, and the outline model object 47, unlike the actual bridge, is expressed as simplified as possible, but the outline model object 47, which represents the road on the bridge deck, is an IP device that is traffic detection equipment. Connected to (51), this illustrates a situation where the color of the outline model object (47) changes depending on the real-time traffic situation.

Meanwhile, Figures 9 to 13 show the present invention's digital twin service, breaking away from the typical method of visually displaying the outline model object 47 on the web page 20, and configuring the CPS 41 dedicated to the present invention. This is a modified embodiment that allows the transmission information of the IP device 51 connected to the overview model object 47 to be provided as a graph or PIP (Picture In Picture) element in various formats, thereby improving the usability and visibility of the service of the present invention. User convenience can be improved.

As shown in FIGS. 2 and 9, in the modified embodiment of the present invention, after performing the construction step (S30), the web browser of the computer 10 requests the web server 30 to create a web standard document (a request step ( S60).

The computer 10 that performs this request step (S60) is also the computer of the user who is a system construction engineer producing the service of the present invention, as in the input step (S10) to the construction step (S30) described above, and the computer 10 that performs the request step (S60) ) and other steps constituting the embodiment of FIG. 9 are also performed by the web browser mounted on the computer 10 and the web page 20 connected to the web server 30.

Thereafter, the web server 30 accepts the web browser's request, queries the dedicated CPS 41, and outputs information that can specify the available IP device 51 to the web page 20 (S70). ) is performed. As described above, the modified embodiment of the present invention shown in FIG. 9 is performed on the premise that the construction step (S30) is completed and the dedicated CPS 41 is completed, and the presentation step ( In S70), access to the original CPS 40 is not required, and since all IP devices 51 are already connected to the dedicated CPS 41, information related to the IP device 51 can be processed smoothly.

In this presentation step (S70), the presentation of information about the available IP device 51 is not illustrated in the attached drawing, but the classification information, identification information, location, and transmission information of the available IP device 51 are presented in a list format. Various methods can be applied, such as printing on the web page 20 or displaying the IP device 51 as a symbol on the outline model object 47 output on the web page 20.

When the presentation step (S70) is completed, a designation step (S80) in which the web browser of the computer 10 designates the IP device 51 through the web page 20 according to the operation of the computer 10 by the user, the service producer, is performed. This is a process in which the user specifies the IP device 51 to output transmission information to the consumer service web page 20 described above, and the screen is illustrated in FIG. 10.

As shown in FIG. 10, the output of the IP device 51 transmission information to the web page 20 can be performed through various formats of graphs or PIP elements that output image information such as CCTV images, for example, the work screen in the same figure. As shown on the left, when a bar graph is selected as the output method and the accumulated traffic volume is applied as the graph number, the traffic volume detection equipment is designated as the IP device 51 and the corresponding IP address is entered in the designation step. (S80) can be performed, and as shown on the right side of the work screen in the same drawing, when the PIP element is selected as the output method and a CCTV camera is designated as the IP device 51, a CCTV camera, which is an IP camera, is displayed in the PIP area. The designation step (S80) can be performed by entering the IP address of .

In this way, when the designation step (S80) is completed, the web server 30 queries the dedicated CPS 41 and creates a web standard document containing the transmission information of the designated IP device 51 (S90). , a confirmation step (S91) is performed in which the web server 30 outputs the created web standard document through the web page 20 and the web browser of the computer 10 searches the web standard document through the web page 20. , the web page 20 as shown in FIGS. 11 to 13 can be output through the web browser of the user's computer 10.

FIG. 11 is a consumer service web page 20 produced by performing the designation step (S80) as shown in FIG. 10 above. Information transmitted from the IP device 51, such as traffic volume, is confirmed through a graph, and real-time CCTV images are displayed. You can also check it on the same screen.

Meanwhile, Figures 12 and 13 are examples of maximizing visibility by configuring the above-described PIP elements and CPS model objects together on the same web page 20 through the present invention, dividing the output screen of the web page 20 into two. An outline model object 47 or a primitive model object 45 is output on one side, and the actual captured image is output on the other side.

In this way, through the present invention, not only the provision of services to digital twin service consumers but also the construction of a digital twin system can be performed through a web browser and web page 20, dramatically reducing the computer resources required in the overall processing process. This can expand the distribution of digital twins and improve their utilization.

10: computer
20: web page
30: web server
40: Raw CPS
41: Dedicated CPS
45: Primitive model object
47: Overview model object
51: IP device
S10: input stage
S20: Abbreviation stage
S30: Construction stage
S40: Update stage
S51: Output stage
S52: Viewing stage
S60: Request stage
S70: Presentation stage
S80: Designated stage
S90: Writing stage
S91: Confirmation step

Claims (2)

A web-based digital twin service method that connects a computer 10 connected to the Internet, a web page 20 built on the Internet, a web server 30 connected to the web page 20, and a web server 30. It consists of a dedicated CPS (41) containing a number of outline model objects (47) and an IP device (51) connected to the dedicated CPS (41), and a primitive model is created from the primitive CPS (40) that reflects the shape and structure of the real thing. An input step (S10) in which object 45 information is extracted and input to the web server 30, and a reduction step in which the web server 30 abbreviates the raw model object 45 information to create an overview model object 47. (S20) and a construction step (S30) in which the web server 30 uses the IP information of the IP device 51 to build a dedicated CPS 41 by connecting the general model object 47 and the IP device 51. ) and an update step (S40) in which the dedicated CPS (41) searches the IP device (51) and updates the outline model object (47) according to the information transmitted by the IP device (51), and the web server (30) Web-based digital consisting of an output step (S51) of outputting the outline model object 47 through the page 20 and a browsing step (S52) of the web browser of the computer 10 browsing the web page 20. In the twin service method,
In the reduction step (S20), the web server (30) deletes some of the geometric information of the primitive model object (45) to create an overview model object (47). delete

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