KR101672333B1 - Middleware device for having multiple path - Google Patents

Middleware device for having multiple path Download PDF

Info

Publication number
KR101672333B1
KR101672333B1 KR1020150117500A KR20150117500A KR101672333B1 KR 101672333 B1 KR101672333 B1 KR 101672333B1 KR 1020150117500 A KR1020150117500 A KR 1020150117500A KR 20150117500 A KR20150117500 A KR 20150117500A KR 101672333 B1 KR101672333 B1 KR 101672333B1
Authority
KR
South Korea
Prior art keywords
information
sensing information
sensing
node
received
Prior art date
Application number
KR1020150117500A
Other languages
Korean (ko)
Inventor
강희문
Original Assignee
지엠아이티 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 지엠아이티 주식회사 filed Critical 지엠아이티 주식회사
Priority to KR1020150117500A priority Critical patent/KR101672333B1/en
Application granted granted Critical
Publication of KR101672333B1 publication Critical patent/KR101672333B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications

Abstract

The present invention relates to an apparatus and a method for detecting information detected by an external sensing device. A plurality of nodes forming multi-paths through which the sensing information can be moved; Receiving and storing the sensing information from the equipment adapter and the plurality of nodes, comparing the sensing information received from the plurality of nodes, and determining an abnormal node in which the abnormality has occurred Sub memory; And a controller configured to receive the sensing information transmitted through the plurality of nodes and to determine a path in which an anomaly occurs in the multipath based on the reception state information of the sensing information, A first node having destination information for transmitting the sensing information and a buffer for storing the sensing information; And a second node including only the destination information, wherein the controller compares at least one of the file capacity information and the address information of the received sensing information with a reference value to determine an effectiveness degree of the sensing information, And a middleware device having a multi-path.

Description

[0001] MIDDLEWARE DEVICE FOR HAVING MULTIPLE PATH [0002]

The present invention relates to a middleware apparatus having a multipath.

In general, middleware is an intermediary medium that connects different types of hardware, protocols, and communication environments, and enables smooth communication between an application program and the environment in which the program runs. Therefore, it is possible to integrally manage hardware composed of heterogeneous types through middleware.

These middleware can connect different types of sensors installed in large-scale factory facilities such as industrial facilities to a central management server or an external server. At this time, the middleware can form a single path between the sensor and the server and can rapidly transmit the information in both directions.

However, if there is a disconnection or an error in the corresponding path, the middleware having a single path may not be able to cope with it, so that it may be difficult to drive the entire system.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a middleware apparatus equipped with a multipath capable of further improving the effect of coping with data transmission efficiency and transmission errors.

According to an embodiment of the present invention, there is provided a middleware apparatus including a multi-path, including: a device adapter for receiving sensing information sensed by an external sensing device; A plurality of nodes forming multi-paths through which the sensing information can be moved; Receiving and storing the sensing information from the equipment adapter and the plurality of nodes, comparing the sensing information received from the plurality of nodes, and determining an abnormal node in which the abnormality has occurred Sub memory; And a controller configured to receive the sensing information transmitted through the plurality of nodes and to determine a path in which an anomaly occurs in the multipath based on the reception state information of the sensing information, A first node having destination information for transmitting the sensing information and a buffer for storing the sensing information; And a second node including only the destination information, wherein the controller compares at least one of the file capacity information and the address information of the received sensing information with a reference value to determine the validity of the sensing information have.
Here, the equipment adapter may classify essential sensing information, which is information requested from the control unit, among the sensing information, and transmit only the essential sensing information to the control unit.
Here, the controller may transmit an overall sensing information request signal to the equipment adapter when it is determined that the external sensing equipment is abnormal based on the equipment status information included in the essential sensing information received from the equipment adapter, Accordingly, when the entire sensing information is received from the equipment adapter, it can be output to the display unit.
Here, if the detection information is not received, the control unit may transmit the reception error information to the node for which the detection information is not received through the alternative path.
Here, the first node may store the sensing information in the buffer, and may delete the sensing information stored in the buffer when reception completion information is received from the controller.
Here, if the reception error information is received from the control unit through the alternative path, the first node stops transmission of the sensing information and stores the sensing information in the buffer, and then receives error resolution information from the control unit , The control unit may retransmit the sensing information stored in the buffer.
Here, the plurality of nodes may include: a first movement path connecting the equipment adapter and the control unit; And a second movement path connecting the equipment adapter and the control unit to each other by a path different from the first movement path.
Here, the first node may be configured to be connectable by an administrator, and the second node may be formed such that connection by the administrator is disabled.
Here, if the detection information is not received within a predetermined reception time based on the reception time information, the controller may determine the node of the path as the abnormal node.
Here, when at least one of the first node and the control unit receives the detection information redundantly, the remaining detection information excluding the first received detection information based on the reception time information of the overlapping detection information is Can be deleted.
The server adapter may further include a server adapter for receiving the detection information from the plurality of nodes and transmitting the detection information to an external server.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

According to the middleware apparatus having the multi-path according to the present invention configured as described above, it is possible to improve the data transmission efficiency and the feedback performance for transmission errors.

In addition, the data transmission efficiency can be further improved by selectively transmitting only essential data when transmitting data.

In addition, when a transmission error such as a disconnection occurs due to a buffer provided in a node, the data being transmitted can be stored and retransmitted when an error is resolved.

Also, in the event of a failure of a particular data movement path, data transmission may be maintained via the alternate path.

In addition, when receiving the same data, priority can be given according to the reception time to prevent reception of data duplication.

1 is a conceptual diagram for explaining the overall configuration of a middleware apparatus 100 according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram illustrating an equipment adapter 110 transmitting only essential sensing information among sensing information received from the external sensing device X. FIG.
FIGS. 3A to 3C are conceptual diagrams for explaining a method for coping with an error in a data movement path. FIG.
FIG. 4 is a flowchart illustrating a method for responding to an abnormality of an external sensing apparatus in the middleware apparatus of FIG. 1;
5 is a conceptual diagram for explaining a middleware apparatus 200 having a sub-memory M according to another embodiment of the present invention.

Hereinafter, a middleware apparatus having a multi-path according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations.

1 is a conceptual diagram for explaining the overall configuration of a middleware apparatus 100 according to an embodiment of the present invention.

The middleware apparatus 100 may include an equipment adapter 110, a plurality of nodes 120 and 130, a server adapter 140, and a control unit 150.

The equipment adapter 110 may receive the sensing information sensed by the external sensing device X. [ The external sensing device X may include acoustic sensors, explosion-proof detectors, picture detectors, gas detectors, weight detectors, fire detectors, and motion detectors, which are devices installed in industrial facilities or buildings. Accordingly, the equipment adapter 110 can receive the sensing information sensed from the above-described sensors. Although a single external sensing device X and a single equipment adapter 110 have been described in the present embodiment for the sake of simplicity of explanation, a plurality of external sensing devices X and a plurality of corresponding equipment adapters 110 .

The plurality of nodes 120 and 130 may form a multi-path through which the sensing information can be moved. In other words, the plurality of nodes 120 and 130 can form a path in which the sensing information transmitted from the equipment adapter 110 can be moved to the control unit 150 or the server adapter 140, which will be described later. To this end, the plurality of nodes 120 and 130 may include a plurality of the first node 120 and the second node 130.

The first node 120 may include a buffer 120a for storing destination information and sensing information for transmitting sensing information. The destination information may be an address relating to the next node or other configuration (control unit 150, external server S) to which the received detection information is to be transmitted. The destination information may be composed of a plurality of pieces of destination information. If the destination information includes a plurality of pieces of destination information, all of the same pieces of detection information may be transmitted to each destination. Details of the buffer 120a will be described later with reference to FIGS. 3A and 3B. Also, the first node 120 may be formed to be connectable by an administrator.

The second node 130 may include only destination information for transmitting the sensing information. In other words, unlike the first node 120, the second node 130 does not have a buffer 120a but only has destination information, and can transmit the received sensing information to the next destination without storing it. In addition, the second node 130 can not be connected by the administrator, thereby improving security.

The server adapter 140 may transmit detection information received from the plurality of nodes 120 and 130 to the external server S. [

The control unit 150 receives the sensing information transmitted through the plurality of nodes, and can determine the anomaly node in which the anomaly occurred based on the received status information of the sensing information. In other words, the control unit 150 receives the sensing information from the equipment adapter 110 through the multi-path, and if the sensing information is not received, the control unit 150 determines the node of the corresponding path as an anomaly node. If the abnormal node is determined, the control unit 150 may transmit the related information to the terminal of the administrator or output the information to the display unit.

According to the middleware apparatus 100, the sensing information sensed by the external sensing device X is transmitted through the multi-path, and if an error occurs in the specific path, it can be avoided through the alternative path.

The overall configuration of the middleware apparatus has been described above. FIG. 2 illustrates a method of transmitting only specific information by classifying detection information in the equipment adapter.

FIG. 2 is a conceptual diagram illustrating an equipment adapter 110 transmitting only essential sensing information among sensing information received from the external sensing device X. FIG.

As shown in the figure, the first equipment adapter 110 can receive the sensing information from the external sensing device X. [ At this time, the received sensing information may be all sensing information (raw data). Thereafter, the equipment adapter 110 can classify essential sensing information among the received sensing information. The essential sensing information may be information requested by the controller 150 or information preset by the manager, and may include concentration information, image information, weight information, and equipment state information in the present embodiment. Here, the equipment state information may be information on the operation state of the external sensing equipment.

In other words, the equipment adapter 110 may include both the entire sensing information and the essential sensing information, and the above-described information may be stored in the memory of the equipment adapter 110. [ The apparatus adapter 110 transmits the detected information to the plurality of nodes 120 and 130 existing between the controller 150 and the equipment adapter 110 to transmit the detected information to the controller 150 .

In this way, the equipment adapter 110 can selectively transmit only essential sensing information required for driving the system among the entire sensing information transmitted from the external sensing device X to the controller 150. This makes it possible to prevent unnecessary movement of information, thereby improving the data transmission efficiency and further enhancing the system driving performance.

In the above description, the selective transmission process of the sensing information through the equipment adapter is described. In FIGS. 3A to 3C, a description will be made of a handling method in the case where an abnormality occurs in the movement path of the sensing information.

3A to 3C are conceptual diagrams for explaining a method for coping with an anomaly in the movement path of the detection information.

First, as shown in FIG. 3A, the present embodiment is substantially the same as FIG. 1, and for convenience of description, a plurality of first nodes 121, 123, 125, and 127 and a single second node 131 Respectively.

When the sensing information is received from the external sensing device, the equipment adapter 110 may classify essential sensing information and transmit it to the controller 150. The sensing information may pass through multiple paths formed by the plurality of nodes 121, 123, 125, 127, and 131 at the time of transmission to the control unit 150. [ In this case, the first node 121, 123, 125 and 127 is provided with a buffer 120a. When the essential sensing information is received, it can be stored in the buffer 120a before being transmitted to the next node. The essential sensing information stored in the buffer 120a can be automatically deleted when the reception completion signal is received from the controller 150. [ In other words, when the communication with the controller 150 is smoothly maintained, the first nodes 121, 123, 125, and 127 may update the information stored in the buffer 120a in real time.

When the essential sensing information is received from the plurality of nodes 121, 123, 125, 127, and 131, the control unit 150 can transmit the reception completion information to the node that has transmitted the information. At this time, since the control unit 150 is connected to the plurality of nodes 121, 123, 125, 127, and 131, the same essential sensing information may be received redundantly. In this case, the control unit 150 may give priority to the overlapped information based on the reception time information, which is the time at which the essential detection information is received. For example, information other than the essential detection information that is received first may be deleted. In addition, when giving priority to the redundant information, the control unit 150 may also perform a data validity check for comparing the file capacity, address information, etc. of the received essential sensing information with a reference value. The priority setting for the duplicate file can also be performed in the first node 121, 123, 125, and 117 through the same method.

Also, the controller 150 may control the activation of the multipath. In other words, the controller 150 can maximize the data movement efficiency by activating the movement path having the shortest physical distance from the equipment adapter 110 in the normal mode, which is a normal operation state. On the other hand, in the case of the emergency mode in which the above-described movement path is generated, it is possible to activate an alternative path that can avoid the nodes having a physical distance from the equipment adapter 110 but are out of order.

The countermeasures in the case where an error occurs in some of the multipaths will be described with reference to FIGS. 3A, 3B and 3C. The first nodes 121, 123, 125 and 127 are connected to the 1-1 node 121 and the 1-2 node 123 which receive the sensing information from the equipment adapter 110, Node 125 and 1-4 nodes. Also, the first nodes 121, 123, 125, and 127 may each include a buffer 120a.

The second node 131 receives the detection information from the 1-1 node 121 and the 1-2 node 123 and can transmit the detection information to the 1-3 node and the 1-4 node.

3A and 3B illustrate a countermeasure when an abnormality occurs in a specific node 121 among a plurality of nodes 121, 123, 125, 127, and 131. FIG.

According to the plurality of nodes 121, 123, 125, 127, and 131 described above, a plurality of movement paths can be formed from the equipment adapter 110 to the control unit 150. In this embodiment, the movement path connected to the equipment adapter 110 -> 1-1 node 121 -> 1-3 node 125 -> control unit 150 may be referred to as a first movement path A1 . In addition, the route to be connected to the equipment adapter 110 -> 1-2 node 123 -> 2-1 node 131 -> 1-4 node 127 -> controller 150 is referred to as a second route (A2).

As shown in FIG. 3A, the controller 150 can receive the essential sensing information by activating the first movement path having the shortest physical distance from the equipment adapter 110 among the multiple paths. At this time, when an abnormality occurs in the 1-1 node 121, essential sensing information may not be received through the first movement route A1.

The occurrence of the abnormality of the 1-1 node 121 is determined by the controller 150 when the essential sensing information is not received through the first movement route A1 or is out of the reference reception time, , 125), and can determine that the node having no response is an abnormal node. The error occurrence confirmation information can be transmitted to each of the nodes 121 and 125 through an alternative path other than the existing first movement path A1.

3B, the controller 150 activates the second movement path A2, which is a path different from the first movement path A1, and transmits a necessary Detection information can be received. The second movement path A2 has a longer travel distance in comparison with the movement path A1 but does not include the ideal node 121 so that the essential sensing information can be transmitted normally.

If the error of the 1-1 node 121 is canceled while the data is being transferred through the second movement path A2, the controller 150 activates the first movement path A1 again, To receive the essential sensing information.

FIG. 3C is a diagram for explaining a method for coping with a situation in which disconnection occurs in the movement path. FIG. As shown in FIG. 3A, while the essential sensing information is received through the first movement path A1, disconnection may occur in the corresponding path.

Whether or not the disconnection occurs is determined based on whether or not the essential sensing information is not received through the first movement path A1 or does not match the reference reception time and the nodes 121 and 125 respond to the error occurrence confirmation information of the control unit 150 , It can be determined that a disconnection has occurred. Or if the first node 121 or 125 of the path does not receive the reception completion information of the essential sensing information transmitted by the first node 121 or 125 from the control unit 150.

3C, when the disconnection is confirmed between the 1-1 node 121 and the 1-3 node 125, the controller 150 controls the 1-1 node 121, the 2-1 node 131, The third movement path A3 having the path of the first to fourth nodes 127 to the controller 150 may be activated to maintain the transmission of the essential sensing information. Here, the activation of the third movement path A3 may be performed not only by the control unit 150 but also by the 1-1 node 121. [ In other words, when the 1-1 node 121 confirms the disconnection with the 1-3 nodes 125, the 1-1 node 121 transmits its own destination information from the existing 1-3 node 125 to the 2-1 node 131 itself Can be changed.

In the case where the disconnection problem of the first movement path A1, which is the existing shortest path, is solved during the transmission of the essential sensing information through the third movement path A3, which is the alternative path, (A1) can be reactivated.

The above description has dealt with a coping method when an abnormality occurs in a plurality of nodes, and a coping method in the case where an abnormality occurs in the external sensing apparatus will be described with reference to FIG.

FIG. 4 is a flowchart illustrating a method for responding to an abnormality of an external sensing apparatus in the middleware apparatus of FIG. 1;

As shown, the initial equipment adapter can receive sensing information from an external sensing device (S1). The equipment adapter can transmit only essential sensing information among the received sensing information to the control unit through the multi-path (S3).

The controller may compare the equipment status information included in the received essential sensing information with a reference value to determine whether the external sensing device is abnormal (S5). At this time, if it is determined that the external sensing apparatus is abnormal, the control unit may transmit the entire sensing information request signal to the equipment adapter (S7). The entire detection information request signal may refer to the entire detection information stored in the equipment adapter.

Thereafter, the control unit determines whether or not the entire sensing information is received from the control unit (S9). If received, the control unit may transmit the sensed information to the display unit or the terminal of the manager (S11).

According to such an operation method, if an abnormality occurs while performing data transmission through only the essential essential detection information, all related information can be transmitted to the manager. And can further improve the efficiency of the overall system operation and the ability to cope with errors.

5 is a conceptual diagram for explaining a middleware apparatus 200 having a sub-memory M according to another embodiment of the present invention.

As shown, the middleware device 200 of this embodiment is substantially similar to the middleware device (FIG. 1, 100) of FIG. 1, but further includes a sub-memory M between the plurality of nodes 220, There is a difference.

The sub memory M is disposed in the middle area between the equipment adapter 210 and the control unit 250 and receives the entire sensing information from the equipment adapter 210. The sub memory M receives necessary sensing information from the plurality of nodes 220, Lt; / RTI > At this time, the total sensing information and the essential sensing information to be stored may be transmitted to the controller 250 when a request signal of the controller 250 is received. Also, the stored information can be deleted only when an administrator's deletion signal is received.

According to such a sub-memory M, when the control unit 250 is located at a midpoint between the equipment adapter 210 and the control unit 250, the control unit 250 transmits a request signal to the equipment adapter 210 It is possible to use the sub-memory M arranged at a shorter distance than the sub-memory M, and the data transfer efficiency can be further improved.

In addition, the sub memo M may compare the same pierce detection information received from each of the nodes 220 and 230 to determine an abnormal node. For example, when the sub-memory M receives the same essential sensing information from the first node 220 and the second node 230, each of the essential sensing information can be compared with each other. As a result of the comparison, when a certain essential sensing information is different from other information, the node that transmitted the essential sensing information can be determined as an ideal node, and information on the essential sensing information can be transmitted to the controller 250.

Accordingly, when the sub-memory M is provided, it is possible to judge the abnormal node in addition to the validity check of the essential sensing information.

The middleware apparatus having the multi-path as described above is not limited to the configuration and the operation manner of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Middleware device 150: Server adapter
110: external sensing device 160:
120: Equipment adapter S: External server
130: first node M: sub-memory
140: Second node D: Display

Claims (14)

A device adapter for receiving detection information sensed by an external sensing device;
A plurality of nodes forming multi-paths through which the sensing information can be moved;
Receiving and storing the sensing information from the equipment adapter and the plurality of nodes, comparing the sensing information received from the plurality of nodes, and determining an abnormal node in which the abnormality has occurred Sub memory; And
And a controller configured to receive the sensing information transmitted through the plurality of nodes and determine a path in which an anomaly occurs in the multi-path based on reception status information of the sensing information,
The plurality of nodes comprising:
A first node having destination information for transmitting the sensing information and a buffer for storing the sensing information; And a second node having only the destination information,
Wherein,
And determining the validity of the sensing information by comparing at least one of the file capacity information and the address information of the received sensing information with a reference value.
The method according to claim 1,
The equipment adapter
Wherein the control unit classifies essential sensing information, which is information requested from the control unit, among the sensing information, and transmits only the essential sensing information to the control unit.
3. The method of claim 2,
Wherein,
When it is determined that the external sensing device is abnormal based on the device state information included in the essential sensing information received from the equipment adapter, transmits an entire sensing information request signal to the equipment adapter, And outputs the detection information to the display unit when the entire detection information is received.
delete The method according to claim 1,
Wherein,
And transmits the reception error information to the node for which the detection information is not received through the alternative path when the detection information is not received.
6. The method of claim 5,
Wherein the first node comprises:
Storing the sensing information in the buffer and deleting the sensing information stored in the buffer when reception completion information is received from the control unit.
The method according to claim 6,
Wherein the first node comprises:
Wherein when the reception error information is received from the control unit through the alternative path, transmission of the sensing information is stopped and stored in the buffer, and if error-canceling information is received from the controller, And the information is re-transmitted to the control unit.
The method according to claim 1,
The plurality of nodes comprising:
A first moving path connecting the equipment adapter and the control unit; And
And a second movement path for connecting the equipment adapter and the control unit with a path different from the first movement path.
delete delete The method according to claim 1,
Wherein the first node comprises:
And is capable of connection by an administrator,
Wherein the second node comprises:
And the connection is made impossible by the manager.
The method according to claim 1,
Wherein,
And determines a node of the path as the abnormal node when the detection information is not received within a predetermined reception time based on reception time information among the reception state information.
13. The method of claim 12,
Wherein at least one of the first node and the control unit comprises:
And deletes the remaining sensing information excluding the sensing information which is received first based on the reception time information of the redundant sensing information when the sensing information is received redundantly.
The method according to claim 1,
And a server adapter for receiving the detection information from the plurality of nodes and transmitting the detection information to an external server.
KR1020150117500A 2015-08-20 2015-08-20 Middleware device for having multiple path KR101672333B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150117500A KR101672333B1 (en) 2015-08-20 2015-08-20 Middleware device for having multiple path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150117500A KR101672333B1 (en) 2015-08-20 2015-08-20 Middleware device for having multiple path

Publications (1)

Publication Number Publication Date
KR101672333B1 true KR101672333B1 (en) 2016-11-07

Family

ID=57529545

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150117500A KR101672333B1 (en) 2015-08-20 2015-08-20 Middleware device for having multiple path

Country Status (1)

Country Link
KR (1) KR101672333B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010048478A (en) * 1999-11-26 2001-06-15 조충환 Pneumatic tire
KR20090093543A (en) * 2008-02-29 2009-09-02 동서대학교산학협력단 Radio frequency sensor network system and data communication method thereof
KR20100119402A (en) * 2009-04-30 2010-11-09 강원대학교산학협력단 Apparatus and method for routing multi-path
KR101127598B1 (en) * 2008-12-10 2012-03-23 한국전자통신연구원 Sink node for multiple radio interface and DMA-based data transfer method in wireless sensor node

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010048478A (en) * 1999-11-26 2001-06-15 조충환 Pneumatic tire
KR20090093543A (en) * 2008-02-29 2009-09-02 동서대학교산학협력단 Radio frequency sensor network system and data communication method thereof
KR101127598B1 (en) * 2008-12-10 2012-03-23 한국전자통신연구원 Sink node for multiple radio interface and DMA-based data transfer method in wireless sensor node
KR20100119402A (en) * 2009-04-30 2010-11-09 강원대학교산학협력단 Apparatus and method for routing multi-path

Similar Documents

Publication Publication Date Title
RU2656684C2 (en) Tire system and method of operation of such tire system
EP0854610A2 (en) Ethernet communication redundancy method
JPH08227344A (en) Communication control equipment between duplex disk controllers
JP2007188521A5 (en)
CA2722478A1 (en) Control system and cpu unit
US9952919B2 (en) Semantic deduplication
JP5966243B2 (en) Storage device and storage device control method
KR101672333B1 (en) Middleware device for having multiple path
JP6830608B2 (en) Communication system, controlled device, and control method of communication system
JP2012075009A (en) Redundancy device and redundancy program
JP5459094B2 (en) Link aggregation communication device
JP5544099B2 (en) Controller communication method and controller communication device
JPH05304528A (en) Multiplex communication node
JP2013121095A (en) Communication device
JPH0628358B2 (en) Transmission system address check method
JP5549570B2 (en) Data transmission apparatus and data transmission method
JP5207320B2 (en) Communication path control device, communication path control method, and communication path control program
JP3997982B2 (en) Failure processing method, information processing system, node device, and data transfer mechanism
JP2010050872A (en) Data transmission system, and data transmission control method
JP6066633B2 (en) Security system
JP2001005739A (en) Method and device for specifying fault position of data path
JP2000295255A (en) Redundant conversion method of transmission line and system using the same
JP2005159483A (en) Duplexing communication apparatus
JPH0769891B2 (en) Redundant control device
JPH03235546A (en) Data communication system

Legal Events

Date Code Title Description
A201 Request for examination
FPAY Annual fee payment

Payment date: 20190809

Year of fee payment: 4