KR101615259B1 - Method, apparatus and system for transferring data to plurality of nodes - Google Patents

Abstract

The present invention relates to a method for transmitting data to a plurality of nodes, and an apparatus and a system therefor. When a master node generates transmission data and transmits the generated transmission data through a network, And transmits the received transmission data to one or more adjacent slave nodes, and transmits the response data received from one or more adjacent slave nodes to the slave node So that the communication performance can be guaranteed with a minimum implementation cost.

Description

Field of the Invention [0001] The present invention relates to a method for transmitting data to a plurality of nodes,

The present invention relates to industrial mass object data transmission technology, and more particularly, to industrial mass object data transmission technology in which when a plurality of nodes are controlled by transmitting industrial mass object data to a plurality of nodes, data is transmitted to a plurality of nodes To an apparatus and a system therefor.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

The industrial mass-data transmission technology is based on PROFINET (RT, IRT), POWERLINK, EtherNet / IP, EtherCAT, etc., considering the technical aspect, standardization status and strategic market among 30 industrial Ethernet systems based on 'Industrial Ethernet' SERCOS III, etc. However, development of data transmission technology for controlling the system is difficult due to high difficulty.

At this point, the Ethernet transmission method based on the 'Industrial Ethernet' communication method is widely used as the strength of the configuration and scalability, but it has a disadvantage of adding a lot of information in order to transmit a small amount of data such as control data have.

The market expansion of the industrial Ethernet technology can predict the dominance of the Ethernet technology in the market as a result of the development of the Ethernet-based communication technology due to the automation of the industrial facilities. However, recently, the industrial Ethernet based data transmission technology has reached the technical limit Therefore, there is a growing need for the development of mass object data transmission technology that can overcome this problem.

In addition, as the next generation power network develops, data transmission technology for controlling a plurality of nodes at the same time has become necessary, and development of technology for satisfying service quality in real time is urgent.

Japanese Patent Publication No. 4107110, Registered on Apr. 11, 2008 (Name: FIELD BUS SYSTEM, CNNECION CONFIRMING METHOD, MASTER AND SLAVE)

The present invention has been proposed in order to solve the conventional inconveniences, in which sub-master nodes transmit sequentially forwarded from the master node according to the transmission path of the network constituting the ring topology or the linear topology in an on- To provide a method, apparatus and system for transmitting data to a plurality of nodes that transmit received transmission data to a neighboring slave node and transfer collected data from a neighboring slave node to a master node upon receiving the data do.

According to another aspect of the present invention, there is provided a data transmission system for receiving a transmission message including transmission data sequentially forwarded from one or more slave nodes located on a transmission path of a network, A sub-master node for transmitting transmitted data to one or more adjacent slave nodes, collecting response data received from the one or more adjacent slave nodes, and transmitting the collected response data through the network; And a master node for generating the transmission data and transmitting the generated transmission data through the network.

According to another aspect of the present invention, there is provided an apparatus for transmitting data to a plurality of nodes, the apparatus comprising: a master node located in a transmission path of a network for sequentially forwarding data through one or more slave nodes; A data transmitting and receiving unit receiving a message, transmitting transmission data included in a received transmission message to one or more adjacent slave nodes, and receiving response data from the one or more adjacent slave nodes; And controlling transmission of the received transmission data to the one or more adjacent slave nodes when there is data to be transmitted to the adjacent slave node by checking the received transmission data, And a data processor for collecting and transmitting data through the network.

According to another aspect of the present invention, there is provided an apparatus for transmitting data to a plurality of nodes, the apparatus comprising: at least one slave node located in a transmission path of a network, A controller for controlling forwarding and forwarding to a sub-master node, and processing a message received from the at least one sub-master node; And a data transmission / reception unit for transmitting the transmission message to a transmission path of the network and receiving a message transmitted from the sub-master node, wherein the transmission message is transmitted to the sub-master node without being processed by the one or more slave nodes And forwarded to one or more slave nodes adjacent to the sub-master node for processing.

According to an aspect of the present invention, there is provided a method for transmitting data to a plurality of nodes in a sub-master, the method comprising: Receiving a forwarded forwarded message; Transmitting transmission data included in the received transmission message to one or more adjacent slave nodes; Receiving response data from the one or more adjacent slave nodes; And collecting response data received from the one or more adjacent slave nodes and transmitting the response data through the network.

According to another aspect of the present invention, there is provided a method for transmitting data to a plurality of nodes in a master node, the method including transmitting data through at least one slave node located on a transmission path of the network Forwarding a forwarding message to the sub-master node; And receiving and processing a message transmitted from the one or more sub-master nodes, wherein the transmission message is forwarded to the sub-master node without being processed in the one or more slave nodes, And may be transmitted to and processed by one or more slave nodes adjacent to the sub-master node.

The present invention sets some of a plurality of nodes located on a transmission path as sub-master nodes, receives data forwarded from a master node along a transmission path and transmits the forwarded data to neighboring nodes, By collecting the received data and transmitting it to the master node, communication performance can be guaranteed with a minimum implementation cost.

In addition, according to the present invention, slave nodes on a network can perform communication by only having a card and a cable, and can perform communication in an on-the-fly manner in the future if necessary, There is an effect that can be performed.

FIG. 1 is a diagram showing a configuration of a system for transmitting data to a plurality of nodes according to an embodiment of the present invention.
2 is a diagram illustrating a structure of a data frame transmitted from a master node to a plurality of nodes according to an embodiment of the present invention.
3 is a diagram showing a specific configuration of a master node in a data transmission system according to an embodiment of the present invention.
4 is a diagram illustrating a specific configuration of a slave node in a data transmission system according to an embodiment of the present invention.
5 is a diagram illustrating a specific configuration of a sub-master node in a data transmission system according to an embodiment of the present invention.
6 is a diagram illustrating a method for transmitting data to a plurality of nodes using a sub-master in a data transmission system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings and the inventor is not limited to the concept of terminology for describing his or her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

First, a system for transmitting data to a plurality of nodes according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing a configuration of a system for transmitting data to a plurality of nodes according to an embodiment of the present invention.

Referring to FIG. 1, a data transmission system according to an embodiment of the present invention is a system for industrial mass object data transmission. The system includes a master node 100, a plurality of slave nodes 200, And a master node 300 as shown in FIG.

The master node 100 is a large number of nodes installed in an industrial field, and may include a power supply facility (making AC using direct current), a drive control device, a manufacturing facility, and the like.

The master node 100 is an object for controlling a plurality of slave nodes 200 in an industrial field and can generate transmission data to be transmitted to a plurality of nodes located on a transmission path. Then, the master node 100 constructs a data frame including the generated transmission data, loads it in a data transmission message, and transmits a plurality of nodes (one or more slave nodes 200 and one or more sub-master nodes 200) . At this time, the master node 100 can transmit the transmission message including the generated transmission data to the nodes on the transmission path of the network during the transmission period by applying the on-the-fly method. Here, the generated transmission message can be returned to the master node 100 through the nodes on the transmission path of the network constituting the ring topology or the linear topology sequentially. At this time, the transmission message returned to the master node 100 may include new data including response information of each node. Here, the transmission data may include, for example, one or more of control information, update information, request information, execution information, and the like.

The slave node 200 may be a large number of objects on a transmission path installed in an industrial field, and may include a power supply facility (making AC using direct current), a driving device, a manufacturing facility, etc., . Accordingly, the slave node 200 can simply forward the transmission data transmitted from the master node 100 to the next node. The slave node 200 can perform the communication in an on-the-fly manner according to the necessity in the future, so that the slave node 200 can easily change the setting according to the node increase or the calculation load.

 The slave node 200 is located on the transmission path of the network and can forward the transmission message including the forwarded transmission data from the master node 100 or the previous slave node 200 to the submaster node 300.

When the slave node 200 receives the transmission data from the adjacent sub-master node 300, the slave node 200 processes the transmission data and transmits the response data including the processing result to the adjacent sub-master node 300.

The sub-master node 300 is a designated node having high performance among the slave nodes located on the transmission path of the configured network. When receiving the transmission message from the master node 100, the sub-master node 300 transmits the transmission data included in the received transmission message to the adjacent To the slave nodes 200 that have not forwarded the slave node 200, that is, forwarded messages, but forwarded the same.

The sub-master node 300 receives the response data according to the transmission data processing from the adjacent slave nodes 200, collects the received response data, and stores the collected response data in the received transmission message, To the next node or to construct a response message including response data and transmit the response message to the master node 100 through the network.

In addition, when the submaster node 300 receives the transmission message including the transmission data through the network, when the submaster node 300 includes its own information, it can perform an operation corresponding to its own information.

The data frame structure of the transmission data transmitted from the master node 100 to the plurality of slave nodes 200 is as shown in FIG. For example, the data frame includes an 8-byte header including simple information on a transmission message to be transmitted to a plurality of slave nodes 200, a variable length data, a 4-byte error check (CRC) And an 'Interframe Gap' area of 12 bytes (Byte). Here, the data area may include a datagram to be transmitted to each node. The size of each area of the data frame such as the header and the error check (CRC) is not fixed to the above-mentioned size but can be changed to various sizes as necessary. Here, the data area may include datagrams including information to be transmitted to each node (control information, request information, update information, and execution information), and a datagram corresponding to each node is extracted from each node , Response information, etc., may be included in the corresponding area.

The master node 100, the plurality of slave nodes 200, and the sub-master node 300 in the data transmission system will be described in detail as follows. First, the specific configuration of the master node will be described in detail with reference to the accompanying drawings.

3 is a diagram showing a specific configuration of a master node in a data transmission system according to an embodiment of the present invention.

3, a master node 100 according to an embodiment of the present invention may include a controller 110, a data transmitter / receiver 120, and a storage 130.

The control unit 110 may control to sequentially transmit the transmission data to be transmitted to the plurality of nodes located on the transmission path of the network along the transmission path. For this, the control unit 110 may include a data processing module 111 and a data frame generation module 112.

The data processing module 111 may generate transmission data that is sequentially transmitted through the nodes along the transmission path. The data processing module 111 constitutes a network in which the master node 100 and the plurality of slave nodes 200 are connected in a ring or linear manner and one or more slaves 200 having a high performance among the plurality of slave nodes 200 Master node 300 to the sub-master node 300. The sub-

The data processing module 111 controls the transmission of the transmission message including the transmission data to one or more nodes (one or more slave nodes 200 and one or more sub-master nodes 300) And process the transmission message returned from the node located on the transmission path or the transmission message or the response message transmitted from the sub-master node 300. [

2, the data frame generation module 112 configures a data frame including transmission data generated by the data processing module 111 and transmits the configured data frame to the data transmission / reception unit 120 have.

The data transmitting and receiving unit 120 transmits the generated data frame including the transmission data to the slave nodes 200 and the sub-master node 300 located in the transmission path of the network in the transmission message, 300, the control unit 110 may transmit the received transmission message or the response message to the control unit 110. [0050] FIG.

The storage unit 130 stores information necessary for operation of the master node 100, and may store the generated control information and the received response information. The storage unit 130 may be an optical recording medium such as a magnetic medium such as a hard disk, a floppy disk, and a magnetic tape, a compact disk read only memory (CD-ROM), and a digital video disk (DVD) A magneto-optical medium such as a floppy disk and a ROM, a random access memory (RAM), and a flash memory.

Next, the specific configuration of the slave node will be described in detail with reference to the accompanying drawings.

4 is a diagram illustrating a specific configuration of a slave node in a data transmission system according to an embodiment of the present invention.

Referring to FIG. 4, a plurality of slave nodes 200 according to an embodiment of the present invention may include a data transmission / reception unit 210, a data processing unit 220, and an operation performing unit 230.

The data transmission and reception unit 210 transfers the transmission message transmitted through the network to the next node (slave node 200 or sub-master node 300) as it is and receives a message including transmission data from the sub- The data processing unit 220 can transmit the received transmission data to the data processing unit 220. In addition, the data transmitting and receiving unit 210 performs an operation according to its own information included in the transmission data, and transmits new data (for example, response data) to which response information about the operation result, Master node 300 to the sub-master node 300 through the data processing unit 220. [

The data processing unit 220 may analyze the transmission data transmitted from the data transmission / reception unit 210 to confirm its own information, and may transmit the confirmed information to the operation performing unit 230.

In addition, the data processing unit 220 may transmit the transmission data or the response data including response information such as a result of the operation, a response according to the request, or the current state to the data transmission / reception unit 210.

The operation performing unit 230 can control the overall operation of the slave node 200 and can grasp and manage its own state. The operation performing unit 230 may perform an operation corresponding to the information transmitted from the data processing unit 220. In addition, the operation performing unit 230 may receive one or more pieces of information, which are obtained by grasping the response information or the current state information as a result of the operation, to the data processing unit 220.

Hereinafter, a specific configuration of a sub-master node according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5 is a diagram illustrating a specific configuration of a sub-master node in a data transmission system according to an embodiment of the present invention.

5, a sub-master node 300 according to an embodiment of the present invention includes a data transmission / reception unit 310, a data processing unit 320, an operation performing unit 330, and a storage unit 340 .

The data transmitting and receiving unit 310 may receive the transmission message sequentially transmitted on the transmission path through the network and may transmit the transmission data included in the received transmission message to the data processing unit 320. [ In addition, the data transmission / reception unit 310 can transmit the transmission data to the adjacent slave nodes 200. Upon receiving the response data from the adjacent slave nodes 200, the data transmission / reception unit 310 transmits the received response data to the data processing unit 320 .

In addition, the data transmission / reception unit 310 can sequentially transmit the received transmission message to one or more next nodes located on the transmission path of the network according to the transmission order. The data transmitting and receiving unit 310 collects the response data received from the adjacent slave nodes 200 and transmits the response message to the master node or transmits the transmission message including the collected response data to the next node on the transmission path .

The data processing unit 320 can control its node to operate as the sub-master node 300 through the network configuration information included in the transmission message.

In addition, the data processor 320 may control to transmit the received transmission data as it is or to extract data corresponding to the slave node 200 to be transmitted to the adjacent slave nodes 200. The data processing unit 320 collects the response data received from the adjacent slave nodes 200 and constructs a response message or transmits the collected response data to the master node 100 or the next slave node 200, As shown in FIG.

If the received data includes its own information, the data processing unit 320 may receive only its own information, and may transmit its own information to the operation performing unit 330 so as to perform an operation according to its own information have.

The operation performing unit 330 can control the overall operation of the sub-master node 300 and can grasp and manage the state of the sub-master node 300. The operation performing unit 330 may perform an operation corresponding to its own information included in the transmission data. In addition, the operation performing unit 330 may receive the result of the operation, the response information according to the request, and the information on the current state, and may transmit the determined one or more information to the data processing unit 320. [

The storage unit 330 stores information necessary for operation of the sub-master node 300, and may store received control information, operation result information, response data received from the adjacent slave nodes 200, and the like . The storage unit 330 may be an optical storage medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, a CD-ROM (Compact Disk Read Only Memory), a DVD (Digital Video Disk) A magneto-optical medium such as a floppy disk and a ROM, a random access memory (RAM), and a flash memory.

Hereinafter, a method for controlling a plurality of nodes according to an embodiment of the present invention will be described in detail.

6 is a diagram illustrating a method for controlling a plurality of nodes in a data transmission system in accordance with an embodiment of the present invention.

In step 1101, the master node 100 configures a network constituting a ring topology or a linear topology, generates transmission data to be transmitted to a plurality of nodes located in a transmission path of the network, and constructs a data frame including the generated transmission data .

In step 1102, the master node 100 transmits the transmission message including the configured data frame to the sub-master node 300a via one or more slave nodes 200a and 200b located in the transmission path of the network. Here, the transmission message is forwarded to the sub master node 300a without being processed in the slave nodes 200a and 200b located in the transmission path.

Accordingly, in step 1103, the sub-master node 300a confirms the transmission data generated in the master node 100 through the network, and transmits the confirmed transmission data as it is or in response to one or more of the adjacent slave nodes 200b and 200c Extracts only the data and reconstructs the transmission data.

At this time, in step 1104, the sub-master node 300a transmits the received transmission message to the next sub-master node 300b via one or more slave nodes 200c and 200d positioned next to the transmission path. In step 1111, after transmitting the transmission data to one or more adjacent slave nodes 200b and 200c, a transmission message including the collected response data may be transmitted to the next sub-master node 300b.

In step 1105, the sub master node 300a transmits the transmission data to the adjacent one or more slave nodes 200b and 200c. Accordingly, in step 1106, each of the slave nodes 200b and 200c receiving the transmission data from the sub master node 300a confirms its own information and performs an operation corresponding to the confirmed own information. Then, in step 1107, each of the slave nodes 200b and 200c transmits the response data to the sub-master node 300a. Although not shown in FIG. 6, the sub-master node 300a transmits transmission data to other slave nodes 200 connected to adjacent slave nodes 200b and 200c in the same manner as steps 1105 to 1107, Response data may also be collected.

Then, in step 1108, the sub-master node 300 composes a response message by collecting the response data received from the adjacent slave nodes 200b and 200c, and transmits the response message configured in step 1109 to the master node 100. [

Accordingly, in step 1110, the master node 100 checks and processes the response data included in the received response message.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

In addition, while the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the features that may be specific to a particular embodiment of a particular invention Should be understood as an explanation. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

Likewise, although the operations are depicted in the drawings in a particular order, it should be understood that such operations must be performed in that particular order or sequential order shown to achieve the desired result, or that all illustrated operations should be performed. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

The present invention relates to a method for transmitting data to a plurality of nodes, and an apparatus and a system therefor, in which a plurality of nodes located on a transmission path are set as sub-master nodes, The forwarding data along the path is received and transmitted to the adjacent nodes, the data received from the neighboring nodes are collected and transmitted to the master node, thereby ensuring the communication performance with the minimum implementation cost.

Further, according to the present invention, the slave nodes on the network can perform communication by only having a card and a cable, and can perform communication in an on-the-fly manner in the future if necessary, There is an effect that can be performed.

In addition, the present invention has a possibility of commercial use or business, and is industrially applicable because it is practically possible to carry out clearly.

100: Master node 110:
111: data processing module 112: data frame generation module
120: data transmission / reception unit 130:
200: slave node 210: data transmission /
220: Data processing unit 230: Operation performing unit
300: Sub-master node 310: Data transmission /
320: Data processing unit 330: Operation performing unit
340:

Claims (12)

And transmits the received transmission data to one or more neighboring slave nodes and transmits its control information to the one or more adjacent slave nodes when receiving a transmission message including transmission data sequentially forwarded from one or more slave nodes located on a transmission path of the network, A sub master node which performs an operation according to its own control information, collects response data received from the one or more adjacent slave nodes and transmits the response data through the network;
A master node for generating the transmission data and transmitting the generated transmission data through the network; And
And transmitting the transmission message transmitted from the master node to the next node without data processing and receiving transmission data from the sub-master node located on the transmission path of the network, And a slave node for transmitting response data to the sub-master node after performing an operation according to the sub-
Wherein the response data includes current state information of the slave node, execution information, and response information for information requested from the sub-master node.
delete Receiving a transmission message sequentially forwarded from a master node located on a transmission path of a network through one or more slave nodes, transmitting transmission data included in the received transmission message to one or more adjacent slave nodes, A data transmission / reception unit for receiving response data from a node, wherein when the slave node receives the transmission message transmitted from the master node, the slave node forwards the data to the next node without data processing;
And controlling transmission of the received transmission data to the one or more neighboring slave nodes when the data to be transmitted to the adjacent slave node exists by checking the received transmission data and collecting the response data received from the one or more adjacent slave nodes A data processing unit for controlling transmission of the data through the network; And
And an operation unit operable to perform an operation according to the received information if the transmission data included in the received transmission message includes the information of the received transmission message,
Wherein the response data includes current state information of the slave node, execution information, and response information for information requested from the sub-master node.
delete The data processing apparatus according to claim 3,
Adding the collected response data to the received transmission message and transmitting the transmission message including the collected response data to the next sub-master node through the next one or more slave nodes located on the transmission path of the network, To the plurality of nodes.
The data processing apparatus according to claim 3,
A response message including the collected response data, and to transmit the configured response message to the master node through the network.
delete delete delete Wherein the submaster node receives sequentially forwarded transmission messages from the master node located on the transmission path of the network via one or more slave nodes, wherein when the slave node receives the transmission message transmitted from the master node Forwarding to the next node without data processing;
Wherein the control information for the sub-master includes a control information for the sub-master itself, and the control information for the sub-master includes at least one of transmission data other than control information of the sub- Transmitting to an adjacent slave node;
Receiving response data from the one or more adjacent slave nodes; And
Collecting response data received from the one or more adjacent slave nodes and transmitting the response data through the network,
Wherein the response data includes current state information of the slave node, execution information, and response information for information requested from the sub-master node. delete delete

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