KR101025315B1 - Geometric modeling system based on Peer to Peer - Google Patents

Abstract

The present invention relates to a distributed CAD system based on a peer-to-peer communication network, in which a stand-alone CAD computer is connected to another CAD computer through a network so as to share each function of the CAD to distribute the CAD work.

The distributed CAD system according to the present invention is a distributed network CAD system based on a peer-to-peer (Peer to Peer: P2P) structure, which enables distributed processing by sharing CAD functions among CAD computers. The CAD computer 100 The CAD function module 110 is provided with a module for each function according to the CAD function, and the CAD function module 110 is approached to the CAD function module 110 through the CAD kernel 120 implementing the CAD function module 110. An application component module 130 to be executed, a remote call module 140 calling the application component module 130 to perform a CAD function for each module, and a CAD function of another CAD computer connected through the network 200; Performs the corresponding CAD function through the remote call module 140 according to the execution request, and transmits the CAD result data to the corresponding CAD computer through the network 200 Distributed component access module 150; characterized in that comprises a.

Equal Layer, Distributed, CAD, P2P, Distributed Component, Remote Call

Description

Distributed CAD system based on peer network {Geometric modeling system based on Peer to Peer}

The present invention relates to a distributed CAD system based on a peer-to-peer communication network, and more particularly, a stand-alone CAD computer is connected to another CAD computer through a network so that each CAD function can be shared to distribute the CAD work. The present invention relates to a distributed CAD system based on a peer-to-peer communication network.

In the product design and development process, reducing production time and improving product quality are very important requirements. As the industry advances and technology gradually develops into a multi-disciplinary complex technology, complex products are designed and produced. The complexities of these technologies are important for collaboration because many workers and multiple systems require a lot of information exchange.

In general product design, the system uses a stand-alone CAD system where the systems are geographically separated. In some cases, the company considers the cost of designing a product and commissions an external design or collaborates with external designers.

The concept of collaborative design and distributed system has been introduced to support such collaboration. Recently, the development of web technology has applied the advantages of web to such collaboration design. Computers connected by a network can exchange information with each other at a remote location, so this web technology becomes an important technical tool for enabling collaboration.

In recent years, general companies have set up distributed design platforms and applied them to product design. Many researches and developments have been carried out on such distributed CAD systems and methodologies. In a distributed CAD system, multiple system users are connected to each other in a network infrastructure consisting of client server structures to exchange design information or design data. In general, CAD design data has a large capacity, and therefore, it takes a long response time to exchange data with each other. do. The long response time that occurs during the transmission and reception of design data decreases the efficiency of the work and acts as a factor that hinders the usability of the distributed CAD system.

In addition, this client server structure has a problem that is difficult to apply in the real shape modeling field, because the data must be simplified to process the transmission data in real time, so that the model information is omitted or only a few necessary information is extracted. This is because the data is reduced.

This simplification or reduction of data for the client is not suitable for collaborative design work, which results in limited applications and limited functionality due to the difficulty of communicating with the client to handle large amounts of CAD model data. There was no.

Accordingly, the present invention has been proposed to solve the above-described problems of the prior art, and an object of the present invention is to move away from the conventional client server structure, and through the inter-layer communication, a stand-alone CAD computer is provided in another CAD computer. It is to provide a distributed CAD system based on peer-to-peer communication network that shares functions and distributes them.

The distributed CAD system according to the present invention for achieving the above object is a distributed network CAD system based on a peer-to-peer (Peer to Peer: P2P) structure to share the CAD function between CAD computers to be distributed processing. The CAD computer includes a CAD functional module having modules for each function according to CAD functions, an application component module for accessing the CAD functional module through the CAD kernel implementing the CAD functional module, and executing each CAD function; A remote call module for calling a module to perform a CAD function for each module, and performing a corresponding CAD function through the remote call module in response to a CAD function execution request of another CAD computer connected through a network; Distributed component that transmits the data to the CAD computer through the network Access module; made.

The distributed component access module may register an access information manager for registering and managing information of another CAD computer requesting to perform a CAD function through a network, and if a CAD function is requested from an external CAD computer registered through the access information manager. It includes a CAD function distributed component that transmits the execution result data to the other CAD computer after performing the CAD function through the remote call module, the access information manager is the location information of another CAD computer requesting to perform the CAD function Register the requestor, and if the CAD result data performed according to the request of another CAD computer is transmitted to the corresponding CAD computer by the CAD function distributed component, the location information of the other CAD computer is released.

On the other hand, the application component module receives the CAD function execution result data by requesting the CAD function to the distributed component access module of another CAD computer connected to the network through the remote call module.

The distributed component access module transmits / receives CAD data according to DCOM or CORBA protocol through a network. When a new CAD function module is added to the CAD function module, the added CAD function information is stored in the distributed component access module. It will be provided to other CAD computers requesting CAD functions.

In the distributed CAD system based on the inter-layer communication network according to the present invention, it is possible to borrow and use functions that are not in one CAD computer from another CAD computer through the inter-layer communication network structure, thereby installing various expensive function modules in one computer. There is no need to do this, and each module can be operated exclusively on each computer, so it is possible to build a module-only system without incurring a large cost at one time. Less restrictions have the effect of saving cost and space than conventional standalone systems.

In addition, in the distributed CAD system according to the present invention, because CAD computers are interconnected through inter-equivalent network networks, even if a problem occurs in one CAD computer, the CAD computer can be connected to another CAD computer to use the functions. This will be better.

In addition, since the distributed CAD system according to the present invention basically shares the functions among the computers, the more computers equipped with each function module, the better the efficiency and stability of use and the speed of the calculation result. have.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall network connection diagram of a distributed CAD system according to an embodiment of the present invention.

As shown in FIG. 1, in the distributed CAD system according to the present invention, a plurality of CAD computers 100 (100A, 100B, 100C, and 100D) each having a CAD function module are connected through a network 200. It is a distributed CAD system based on peer-to-peer (P2P) that allows a CAD computer on one side to call and use a CAD function module provided in another CAD computer.

In the distributed CAD system according to the present invention, CAD computer 1 (100A) can be used by calling the CAD function module provided in CAD computer 2 (100B) to CAD computer 4 (100D), similarly CAD computer 2 (100B) to CAD computer 4 (100D) can be used by calling the CAD function module of another CAD computer. That is, if CAD computer 1 (100A) calls and uses the CAD function module of CAD computer 2 (100B), CAD computer 1 (100A) becomes a client and CAD computer 2 (100B) acts as a server. If computer 2 (100B) calls and uses the CAD function module of CAD computer 1 (100A), CAD computer 2 (100B) becomes a client and CAD computer 1 (100A) acts as a server. Accordingly, in the P2P based CAD system, the CAD computer 100 may serve as a client or a server depending on whether a CAD function module is requested or provided to another CAD computer.

The CAD function module provided in the CAD computer 1 (100A) to CAD computer 4 (100D) is composed of modules having different functions may be provided to enable distributed processing between each CAD computer, the module having the same or similar functions It may be made of.

2 is a block diagram of a CAD computer according to an embodiment of the present invention.

As shown in FIG. 2, the CAD computer 100 includes a CAD function module 110 for a CAD function, a CAD kernel 120 for executing the CAD function module 110, and the CAD kernel 120. The application component module 130 using each function of the CAD function module 110 and the CAD function module 110 is called through the application component module 130, and each of the CAD function modules of the other CAD computer is provided. The remote call module 140 for requesting the CAD function and the distributed component access module 150 for communicating with another CAD computer through the network 200 are provided.

The CAD function module 110 is a module that performs a substantial function of the CAD, and there are two general CAD functions, which can be divided into graphic functions and arithmetic functions. The graphic function is a graphic function for outputting the shape information calculated by the computer computing device to the display device. The graphic function includes coordinate transformation, masking, rendering function, and the like of the shape information. The arithmetic function is a part that mathematically generates a three-dimensional shape and functions to generate shape information such as points, lines, planes, and solids, and store the same in memory. In the CAD function module 110 according to an embodiment of the present invention, various CAD functions such as a brian calculation module, a surface generation module, a surface fragmentation module, an analysis module, a human modeling module, a virtual assembly module, and the like module A, B, C) is provided separately.

The CAD kernel 120 is a core operating system for providing CAD services by implementing each functional module of the CAD functional module 110. The CAD kernel 120 is a visualization function for graphic functions, modeling algorithms and data. It is divided into parts that support CAD operation functions such as management and provided through the library. Thus, by accessing the library provided by the CAD kernel 120 in a computer language, each function of the CAD function module 110 can be used, thereby providing a tool for developing various types of CAD systems.

The application component module 130 is a program module for accessing the CAD kernel 120 and applying the combined functions of the CAD function module 110 implemented through the CAD kernel 120. The application component module 130 is a top module in the CAD function of the CAD computer 100, and provides various CAD functions provided in the CAD computer 100.

The remote call module 140 is a program module that internally calls the application component module 130 and externally calls a CAD function existing in another remote CAD computer. Through 140, the CAD function implemented in the CAD computer 100 and the CAD function implemented in another CAD computer may be used.

The distributed component access module 150 is a program module that serves as a path for receiving and responding to functions when accessed from another external CAD computer, that is, when a function is requested. When the distributed component access module 150 receives a request for a CAD function from another external CAD computer, the CAD module requests a CAD function through an interaction with the remote call module 140 and receives an execution result and sends the request to the external CAD computer. Will respond and deliver.

3 illustrates a network connection diagram of a CAD system implemented through a plurality of CAD computers having the configuration of FIG. 2.

As shown in FIG. 3, each CAD computer 100A and 100B includes a CAD function module 110, a CAD kernel 120, an application component module 130, a remote call module 140, and a distributed component access module ( 150, etc., the CAD function of the CAD function module 110 provided in each CAD computer 100A, 100B is configured differently so that the CAD function can be called by using the mutual CAD function through the network 200. It is composed.

In the embodiment of the present invention, the CAD function module 110 of the CAD computer 1 (100A) is provided with a blyon operation module 111, the surface generation module 112, the surface fragmentation module 113, CAD computer 2 The CAD function module 110 of 100B is provided with an analysis module 116, a human body modeling module 117, a virtual combination module 118, and the like.

The Boolean calculation module 111 included in the CAD function module 110 of the CAD computer 1 110 may store a solid data structure in a memory when the mathematically calculated three-dimensional shape information is a solid shape. The module provides the sum, difference, and intersection between the shapes. The surface generation module 112 includes a Bezier curve, a Cox curve, a B-Spline curve, and a NURBS curve that are the basis of the surface representation in the CAD computer 100A, and the surfaces generated by the dimensional expansion thereof, and the parametric equations. A module that generates surfaces and stores them in a memory including the surfaces generated by the. The face fragmentation module 113 has a mathematical model generated by a computer arithmetic unit to meet various purposes, for example, to improve the speed of visualization to a display device or to achieve an objective for engineering analysis. A module that divides information finely.

The analysis module 116 provided in the CAD function module 110 of the CAD computer 2 (100B) adds the physical characteristic information, that is, the physical property information, to the virtual shape information generated by the computer computing device to test the engineering operation. Representative modules include stress analysis, deformation analysis, fluid analysis, and heat transfer analysis. The human body modeling module 117 is a module for modeling a human body and is a module for modeling a human body on a computer in consideration of standard size information and weight of a body part. The virtual combination module 118 is a function of assembling shape data generated by a computer computing device with each other to form a final assembly. The module graphically displays the problems occurring during assembly and the characteristics generated for each object during assembly. Or provide numerical analysis. Each function module of the CAD function module 110 is an example of a function of the CAD system 100A or 100B. In addition to the function module, various functions for performing CAD functions may be added or changed.

Each module included in the CAD function module 110 of the CAD computers 100A and 100B is implemented as a function library by the CAD kernel 120, and an application component module 130 produced in a program language in the function library. This approach is used to combine each function. In addition, the remote call module 140 calls and executes each function module provided in the CAD function module 110 through communication with the application component module 130, and at the request of the application component module 130. The CAD function of the other CAD computer connected through the network 200 is called. Accordingly, the application component module 130 may request and provide another CAD computer through the remote call module 140 for a CAD function not provided in the CAD function module 110 of the application component module 130.

On the other hand, when the distributed component access module 150 requests a CAD function from an external CAD computer through the network network 200, the distributed component access module 150 performs the corresponding CAD function through communication with the remote call module 140 and performs the result. Received and transmitted to the external CAD computer through the network 200. For example, when the application component module 130 of the CAD computer 2 (100B) requests the CAD computer 1 (100A) to perform the surface generation function through the remote call module 140, the CAD computer 1 (100A) is distributed The component access module 150 receives the request of the CAD computer 2 (100B), calls the remote call module 140 to drive the surface generation module 112 internally, the performance of the surface generation module 112 After the response and the result data is transmitted to the CAD computer 2 (100B) through the network 200.

As such, the application component module 130 may request a CAD function from another CAD computer using the remote call module 140 to receive a result, and the distributed component access module 150 may request a CAD received from another CAD computer. It finds and performs a function. Therefore, CAD computer 1 (100A) and CAD computer 2 (100B) is a structure that can borrow or borrow each other CAD functions provided in each CAD function module 110.

This process is equally applicable to other CAD computers connected through the network 200. That is, any CAD computer may request or share a function with each other to perform CAD operations.

Data transmitted and received between CAD computers transmitted through the network 200 is subject to the DCOM or CORBA protocol, the DCOM and CORBA is a communication standard technology for exchanging information between distributed systems. The CORBA (Common Object Request Broker Architecture) provides software objects with a consistent standard related to communication with other objects, so that even objects in different environments can maintain compatibility related to communication using CORBA. The Distributed Component Object Model (DCOM) is equivalent to CORBA in that it provides a variety of distributed services. This DCOM concept allows Microsoft to allow client program objects on the network to request services from server program objects on other computers. And programmatic interfaces. The communication data using the DCOM or CORBA is preferably a data format for created network transmission, not a user or any standard.

4 is a conceptual diagram illustrating a process of requesting a CAD function from a different CAD computer and receiving a result according to an embodiment of the present invention.

In FIG. 4, the CAD computer N 100D may be an arbitrary CAD computer connected to the distributed component access module 150 provided in the other CAD computer 100A through the network 200 for requesting CAD functions and receiving results. Can be.

The distributed component access module 150 is a distributed component module developed to build a system of a peer-to-peer communication network type in an existing CAD computer, and the distributed component access module 150 has access to manage access information of a CAD function requester. The information manager 151 and the CAD function distributed component 152 for requesting and executing the CAD function are provided.

The access information manager 151 registers the information of the other CAD computer 100D when the third computer 100D accesses (1), and the response to the CAD function request is finished or for another reason, the other computer 100D. Performs the function (④) to disconnect the connection. Accordingly, the access information manager 151 is an accessor information manager managing an access state of another CAD computer 100D, and the access information manager 151 is a location of another CAD computer 100D connected to the network 200. Information and requested functions are stored and managed. In addition, the access information manager 151 registers information on the CAD function provided in the CAD function module 110, and provides the registered CAD function information to the other CAD computer 100D so that the other CAD computer 100D It manages so that it can request CAD functions that you want distributed processing. Therefore, when a new CAD function module is added to the CAD function module 110, the added CAD function information is registered in the access information manager 151 and provided to another CAD computer 100D requesting a new CAD function. . Meanwhile, the CAD function information management for providing the provided CAD function information to another CAD computer 100D may be performed by the CAD function distributed component 152 instead of the access information manager 151.

The CAD function distributed component 152 is a distributed component in charge of the CAD function, receives the CAD function from the other CAD computer 100D connected to the network 200 (②), and performs the requested CAD function. It serves as a middleware to provide the result data and the like to the other CAD computer (100D) (③).

As such, the distributed component access module 150 provided in the CAD computer 100A registers the location information of another CAD computer 100D (①), and when a CAD function is requested from the other CAD computer 100D (②). After performing the corresponding CAD function provided in the CAD function module 110 through the remote call module 140, the resultant data is transmitted to the CAD computer 100D which requested (③). In addition, when the response is completed by transmitting the result data to the corresponding CAD computer 100D, the process of releasing the access information of the CAD computer 100D is performed (④).

5 is a flowchart illustrating a process of requesting a CAD function and receiving a result according to an embodiment of the present invention.

Step S110: When CAD computer 1 (100A) requests a CAD function from another CAD computer 100D connected to the network 200 through the distributed component access module 150, first, access information of the distributed component access module 150 The manager 151 registers another computer computer location information transmitted from another computer 100D to be a requestor.

Steps S120 and S130: After the location information of another CAD computer 100D requesting the CAD function is registered, the other CAD computer 100D is a CAD function provided in the distributed component access module 150 of CAD computer 1 (100A). The CAD function is requested to the distributed component 152 (S120), and the CAD function distributed component 152 of the CAD computer 1 100A that receives the CAD function request information includes the remote call module 140 and the application component module ( After performing the corresponding CAD function through 130, the execution result data and the response completion data are transmitted to the other CAD computer 100D (S130).

Step S140: On the other hand, when the result data and the response completion data are transmitted to the other CAD computer 100D through the CAD function distributed component 152 and the response according to the CAD function request is completed, the access information manager 151 performs a response process. Since it is finished, the other CAD computer 100D is deregistered.

6 is a conceptual diagram illustrating a processing process when several other CAD systems approach a distributed component access module of a CAD computer according to an embodiment of the present invention.

As shown in FIG. 6, a plurality of CAD computers, that is, CAD computer N-1 (100C) and CAD computer N (100D) request CAD function from CAD computer 1 (100A) to request CAD function. When requesting registration to the access information manager 151 provided in the distributed component access module 150, the access information manager 151 of the CAD computer 1 (100A) of the CAD computer N-1 and N (100C) (100D) The location information is registered to register the function requester (①). Thereafter, the CAD computer N-1 and N (100C) (100D) receives the request to perform the CAD function (②), respectively, CAD function distributed component 152 requests the corresponding CAD function to the remote call module 140 to perform Then, the result data is transmitted to CAD computers N-1 and N (100C) 100D, respectively (③). In addition, the access information manager 151 of CAD computer 1 (100A) notifies the CAD computers N-1 and N (100C) (100D) of deregistration after completing the response of the requested CAD function and the result. The connection will be released (④).

Through this process, a large number of CAD computers 100C and 100D can request and respond to each other through the distributed component access module 150, thereby achieving a distributed CAD system based on an equivalent hierarchical communication network.

In the above-described embodiment of the present invention, a distributed CAD system based on an inter-equivalent communication network has been described. The distributed CAD system applied to the present invention is only an AUTO CAD or AUTO CAD or 3D CAD system. Does not mean That is, the CAD system applied to the present invention can be applied to various design systems for performing shape modeling (ComputerAided Design) using a computer.

Therefore, the present invention is not limited to the above-described embodiment, and various modifications within the equivalent scope of the technical idea of the present invention and the claims to be described below by those skilled in the art to which the present invention pertains. And of course modifications can be made.

1 is an overall network connection diagram of a distributed CAD system according to the present invention,

2 is a block diagram of a CAD computer according to the present invention,

3 is a network connection diagram of a CAD system implemented through a plurality of CAD computers according to the present invention;

4 is a conceptual diagram illustrating a process of requesting CAD functions from different CAD computers and receiving a result according to the present invention;

5 is a flowchart illustrating a process of requesting a CAD function and receiving a result through a CAD system according to the present invention;

6 is a conceptual diagram illustrating a processing process when several other CAD systems approach the distributed component access module of the CAD computer according to the present invention.

[Description of Drawings]

100: CAD computer 110: CAD function module

120: CAD kernel 130: application component module

140: remote call module 150: distributed component access module

151: access information manager 152: CAD function distributed component

200: network

Claims (6)

As a distributed network CAD system based on peer-to-peer (P2P) architecture, the CAD function can be shared among CAD computers, allowing distributed processing. The CAD computer 100 is A CAD function module 110 provided with a module for each function according to the CAD function; An application component module (130) for executing each CAD function by accessing the CAD function module (110) through the CAD kernel (120) implementing the CAD function module (110); A remote call module 140 for calling the application component module 130 and performing a CAD function for each module; According to the CAD function execution request of another CAD computer connected through the network 200, the CAD function is performed through the remote call module 140, and the CAD result data is performed through the CAD computer through the network 200. Distributed component access module (150) for transmitting to the distributed CAD system comprising a. The method of claim 1, The distributed component access module 150 An access information manager 151 that registers and manages information of another CAD computer requesting to perform the CAD function through the network 200; When the CAD function is requested from another external CAD computer registered through the access information manager 151, the CAD function performs the corresponding CAD function through the remote call module 140 and then transmits the result data to the other CAD computer. Distributed CAD system comprising a distributed component (152). 3. The method of claim 2, The access information manager 151 registers the requestor by registering location information of another CAD computer requesting to perform the CAD function, and the CAD result data performed according to the request of the other CAD computer is the CAD function distributed component 152. When the transmission to the other CAD computer by the distributed CAD system, characterized in that to release the location information of the other CAD computer. The method of claim 1, The application component module 130 is characterized by receiving the CAD function execution result data by requesting the CAD function to the distributed component access module of another CAD computer connected to the network 200 through the remote call module 140 Type CAD system. The method of claim 1, The distributed component access module 150 is a distributed CAD system, characterized in that for transmitting and receiving the CAD data in accordance with the DCOM or CORBA protocol through the network (200). The method of claim 1, When a new CAD function module is added to the CAD function module 110, the added CAD function information is stored in the distributed component access module 150 and distributed to another CAD computer requesting a new CAD function. Type CAD system.

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