WO2014002635A1 - 集中コントローラ - Google Patents

集中コントローラ Download PDF

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Publication number
WO2014002635A1
WO2014002635A1 PCT/JP2013/063667 JP2013063667W WO2014002635A1 WO 2014002635 A1 WO2014002635 A1 WO 2014002635A1 JP 2013063667 W JP2013063667 W JP 2013063667W WO 2014002635 A1 WO2014002635 A1 WO 2014002635A1
Authority
WO
WIPO (PCT)
Prior art keywords
centralized controller
main body
lan port
port
lan
Prior art date
Application number
PCT/JP2013/063667
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
祥一 蓮池
岡田　良平
Original Assignee
ダイキン工業株式会社
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 ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN201380030873.0A priority Critical patent/CN104380003B/zh
Publication of WO2014002635A1 publication Critical patent/WO2014002635A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers

Definitions

  • the present invention relates to a centralized controller.
  • a centralized controller for centrally managing a plurality of equipment installed in an office building has been used.
  • the centralized controller is connected to a terminal for remotely monitoring and remotely operating equipment such as an air conditioner and lighting as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-307335) via a network. ing.
  • the centralized controller connected to the network is provided with, for example, a LAN port for attaching a LAN cable connector.
  • An object of the present invention is to provide a centralized controller that can efficiently perform maintenance work.
  • the centralized controller is installed in an office building and centrally manages a plurality of equipment including at least an air conditioner.
  • the centralized controller includes a main body, a mounting portion, a display, a first LAN port, and a second LAN port.
  • An attachment part is a member for attaching and installing a main body to a wall surface.
  • the display is arranged in front of the main body and is a touch panel type.
  • the first LAN port is disposed on the back surface of the main body, and a LAN cable connector used for connection to a remote management device that remotely manages equipment is mounted.
  • the second LAN port is disposed on a surface other than the back surface of the main body, and a LAN cable connector used for connection with the equipment is attached.
  • the second LAN port is arranged on a surface other than the back surface of the main body, such as the front surface of the main body, and is used during maintenance work.
  • the second LAN port is arranged at a location accessible from the front side of the main body. Therefore, the LAN cable connector can be easily attached to and detached from the second LAN port during maintenance work. Therefore, the centralized controller according to the first aspect can efficiently perform maintenance work.
  • the centralized controller according to the second aspect of the present invention is the centralized controller according to the first aspect, and further includes a changeover switch for switching between the first mode and the second mode.
  • the first mode is a mode in which the first LAN port is valid and the second LAN port is invalid.
  • the second mode is a mode in which the first LAN port is invalid and the second LAN port is valid.
  • the centralized controller according to the second aspect includes a changeover switch for enabling one of the first LAN port and the second LAN port and disabling the other. The maintenance worker can operate the changeover switch to switch to the first mode in which only the first LAN port is valid during normal operation, and to switch to the second mode in which only the second LAN port is valid during maintenance work.
  • the centralized controller can perform maintenance work more efficiently.
  • a centralized controller is the centralized controller according to the second aspect, and further includes a second mode prevention mechanism.
  • the second mode prevention mechanism prevents the changeover switch from being in the second mode.
  • the centralized controller according to the third aspect can prohibit the second mode in which only the second LAN port is enabled by the second mode prevention mechanism except during maintenance work. Thereby, the use of the second LAN port during normal operation can be prohibited. Therefore, the centralized controller according to the third aspect can prevent a maintenance worker from making mistakes during maintenance work.
  • a centralized controller according to a fourth aspect of the present invention is the centralized controller according to the third aspect, further comprising a port cover.
  • the port cover covers the second LAN port from the front side of the main body.
  • the port cover can be attached to and detached from the main body. Since the centralized controller according to the fourth aspect includes a port cover that covers the second LAN port, a user of the centralized controller other than the maintenance worker is prevented from using the second LAN port. Therefore, the centralized controller according to the fourth aspect can prevent user errors during normal operation.
  • a centralized controller according to a fifth aspect of the present invention is the centralized controller according to the fourth aspect, and the second mode prevention mechanism is a cover attachment prevention mechanism that prevents the port cover from being attached to the main body.
  • the centralized controller according to the fifth aspect prevents the port cover covering the second LAN port from being attached to the main body in the second mode in which only the second LAN port is enabled.
  • the maintenance worker can switch the centralized controller from the second mode to the first mode without forgetting after the maintenance work of the centralized controller is completed. Therefore, the centralized controller according to the fifth aspect can prevent the maintenance worker from making mistakes during the maintenance work.
  • a centralized controller according to a sixth aspect of the present invention is the centralized controller according to any one of the first to fifth aspects, and the second LAN port is disposed in front of the main body.
  • the centralized controller according to the sixth aspect since the second LAN port is disposed on the front surface of the main body, the maintenance worker can easily access the second LAN port. Therefore, the centralized controller according to the sixth aspect can perform maintenance work more efficiently.
  • the centralized controller according to the first aspect of the present invention can efficiently perform maintenance work.
  • the centralized controller according to the second and sixth aspects of the present invention can perform maintenance work more efficiently.
  • the centralized controller according to the third and fifth aspects of the present invention can prevent a maintenance worker from making mistakes during maintenance work.
  • the centralized controller according to the fourth aspect of the present invention can prevent user mistakes during normal operation.
  • the refrigeration apparatus management system 100 is a system that manages the air conditioning apparatus 10 as a refrigeration apparatus installed in an office building 90.
  • the refrigeration apparatus management system 100 is a system that centrally monitors and controls the air conditioner 10 at a location away from the installation location of the air conditioner 10.
  • (1) Overall Configuration of Refrigeration Device Management System As shown in FIG. 1, the refrigeration device management system 100 mainly includes an air conditioner 10, a centralized controller 20, and a remote management device 30.
  • a plurality of air conditioners 10 are installed in the office building 90.
  • the centralized controller 20 is a device for centrally monitoring and controlling the plurality of air conditioners 10.
  • the centralized controller 20 is installed in an administrator room of the office building 90 or the like.
  • the centralized controller 20 is connected to the air conditioner 10 by a dedicated line 70.
  • the remote management device 30 is a server installed in the remote management center 13 in the office building 90.
  • the remote management device 30 is connected to the centralized controller 20 through a LAN cable 80 by wire using the intranet 60 of the office building 90.
  • the remote management device 30 is a device for monitoring and controlling the air conditioner 10 by accessing the centralized controller 20 via the intranet 60.
  • An administrator of the refrigeration apparatus management system 100 can transmit a command for causing the air conditioner 10 to execute a predetermined operation mode from the centralized controller 20 or the remote management apparatus 30.
  • the predetermined operation modes are, for example, a cooling operation mode, a heating operation mode, and an inspection mode.
  • each component of the refrigeration apparatus management system 100 will be described.
  • (2) Configuration of Air Conditioner As shown in FIG. 2, the air conditioner 10 is mainly composed of one outdoor unit 11 and a plurality of indoor units 12 connected to the outdoor unit 11. A maximum of 64 indoor units 12 can be connected to one outdoor unit 11. That is, one refrigerant circuit is composed of one outdoor unit 11 and a maximum of 64 indoor units 12.
  • the air conditioner 10 configures a refrigerant circuit as a whole that includes a compressor, a heat exchanger, and the like (not shown).
  • the outdoor unit 11 and the indoor unit 12 are connected by a dedicated line 70 and a refrigerant pipe (not shown).
  • the centralized controller 20 mainly includes a main body 21, a mounting portion 22, a display 23, a first LAN port 24, and a second LAN port 25.
  • the switch 26, the port cover 28, and the cover attachment prevention mechanism 27 are configured.
  • the second LAN port 25 and the changeover switch 26 are covered with the port cover 28 and are in an invisible position.
  • the cover attachment prevention mechanism 27 is a boss 27 formed on the port cover 28.
  • the centralized controller 20 is embedded and installed in a wall surface 40 such as a manager room of an office building 90.
  • a user of the centralized controller 20 such as an administrator of the office building 90 can operate the centralized controller 20 embedded in the wall surface 40 to centrally monitor and control the plurality of air conditioners 10.
  • the main body 21 is a plastic casing of the centralized controller 20.
  • the main body 21 is provided with a mounting portion 22, a display 23, a first LAN port 24, a second LAN port 25, a changeover switch 26, and a port cover 28.
  • the port cover 28 can be detached from the main body 21 and can be attached to the main body 21.
  • FIG. 4 shows the centralized controller 20 with the port cover 28 removed.
  • the centralized controller 20 has a storage unit, a control unit, and the like (not shown) inside the main body 21.
  • the storage unit is a ROM, a RAM, a hard disk, or the like that stores data and programs used for management of the air conditioning apparatus 10.
  • the storage unit stores operation data, an operation schedule, and the like of the air conditioner 10.
  • the control unit is a CPU or the like that executes a program stored in the storage unit and processes predetermined data.
  • the mounting portion 22 is made of metal or resin used to fix the main body 21 to the wall surface 40 when the centralized controller 20 is embedded in the wall surface 40 of a manager's room or the like of the office building 90. It is a member. As shown in FIG. 6, the attachment portion 22 is fixedly attached to the main body 21. At the upper and lower ends of the attachment portion 22, attachment pieces 22a are provided so as to face each other. The attachment piece 22a is attached to the wall surface 40 with screws or the like. (3-3) Display The display 23 is a touch panel type device arranged in the main body 21.
  • FIG. 5 shows the centralized controller 20 viewed from the rear.
  • the display 23 has functions as a display device and an input device of the centralized controller 20.
  • the centralized controller 20 can display the management setting screen of the air conditioner 10 as shown in FIGS. 3 and 4 on the display 23.
  • First LAN Port A connector of a LAN cable 80 for connecting the centralized controller 20 and the intranet 60 is attached to the first LAN port 24.
  • the first LAN port 24 is disposed on the back surface of the main body 21. Therefore, during normal operation of the refrigeration apparatus management system 100, that is, in a state where the centralized controller 20 is embedded in the wall surface 40 such as a management room of the office building 90, the user of the centralized controller 20
  • the LAN cable 80 attached to the first LAN port 24 cannot be seen.
  • the connector of the LAN cable 80 attached to the first LAN port 24 is not removed from the first LAN port 24 during both normal operation and maintenance work of the refrigeration apparatus management system 100.
  • the second LAN port 25 is disposed in front of the main body 21. Similar to the first LAN port 24, the second LAN port 25 is a port to which a LAN cable connector can be attached. During normal operation of the refrigeration apparatus management system 100, the second LAN port 25 is covered with a port cover 28. The second LAN port 25 is used during maintenance work of the refrigeration apparatus management system 100. A maintenance worker of the refrigeration apparatus management system 100 attaches a LAN cable connector to the second LAN port 25 in order to temporarily connect his / her maintenance terminal and the centralized controller 20 via the LAN cable. Normally, the maintenance worker of the refrigeration apparatus management system 100 is not the user of the centralized controller 20.
  • the changeover switch 26 is disposed in front of the main body 21. During normal operation of the refrigeration apparatus management system 100, the changeover switch 26 is covered with a port cover 28.
  • the changeover switch 26 is a switch for enabling one of the first LAN port 24 and the second LAN port 25 and disabling the other. Specifically, it is possible to switch between the central controller 20 in the first mode and the central controller 20 in the second mode by operating the changeover switch 26. In the central controller 20 in the first mode, the first LAN port 24 is enabled and the second LAN port 25 is disabled. In the central controller 20 in the second mode, the first LAN port 24 is disabled and the second LAN port 25 is enabled.
  • the changeover switch 26 has a convex portion 26a that can move in the horizontal direction.
  • the convex portion 26a of the changeover switch 26 is located on the left side in the first mode, and is located on the right side in the second mode.
  • a maintenance worker of the refrigeration apparatus management system 100 can manually perform the switching operation of the changeover switch 26.
  • the maintenance worker of the refrigeration apparatus management system 100 switches the changeover switch 26 from the first mode to the second mode at the start of the maintenance work of the refrigeration apparatus management system 100, and sets the changeover switch 26 to the first when the maintenance work is completed. Switch from 2 mode to 1st mode.
  • the centralized controller 20 is in the first mode.
  • a connector of a LAN cable 80 connected to the intranet 60 is attached to the first LAN port 24.
  • the centralized controller 20 is in the second mode.
  • a connector of a LAN cable 80 connected to the intranet 60 is attached to the first LAN port 24, and the second LAN port 24 is connected to a maintenance work terminal of a maintenance worker of the refrigeration apparatus management system 100.
  • a LAN cable connector is attached.
  • the port cover 28 is a member that covers the second LAN port 25 and the changeover switch 26.
  • the port cover 28 is attached to the front side of the main body 21.
  • the port cover 28 has the same color and material as the main body 21 or similar to the main body 21.
  • FIG. 7 is an external view of the port cover 28 attached to the main body 21 as viewed from the back side of the main body 21.
  • the surface that becomes invisible when attached to the main body 21 is referred to as the “back surface” of the port cover 28.
  • a boss 27, which is a cover attachment prevention mechanism 27 described later, is formed.
  • the second LAN port 25 and the changeover switch 26 are covered with a port cover 28.
  • the person who removes the port cover 28 from the main body 21 is only the maintenance worker of the refrigeration apparatus management system 100. That is, only the maintenance worker accesses the second LAN port 25 and the changeover switch 26 of the centralized controller 20.
  • FIGS. 8 to 10 are views of the main body 21 of the centralized controller 20 as viewed from below.
  • the cover attachment prevention mechanism 27 is a boss 27 formed on the back surface of the port cover 28.
  • the boss 27 is a protrusion disposed on the back surface of the port cover 28.
  • the boss 27 of the port cover 28 is disposed at a position that interferes with the changeover switch 26.
  • the centralized controller 20 is in the second mode, that is, when the convex portion 26a of the changeover switch 26 is located on the right side, as shown in FIG.
  • the tip of the portion 26 a is in a position where it contacts the tip of the boss 27 of the port cover 28.
  • the boss 27 of the port cover 28 is a cover attachment prevention mechanism 27 that prevents the port cover 28 from being attached to the central controller 20 in the second mode. Further, the boss 27 of the port cover 28 prevents the second operator from forgetting to switch the centralized controller 20 from the second mode to the first mode after the maintenance work of the refrigeration apparatus management system 100 is completed.
  • Mechanism 27. (4) Configuration of Remote Management Device The remote management device 30 is a server having a function of accessing the centralized controller 20 via the intranet 60 of the office building 90 to centrally monitor and control the air conditioner 10. Similar to the centralized controller 20, the remote management device 30 has a storage unit, a control unit, and the like.
  • the storage unit is a ROM, a RAM, a hard disk, or the like that stores data and programs used for management of the air conditioning apparatus 10.
  • the storage unit stores, for example, operation data and an operation schedule of the air conditioner 10.
  • the control unit is a CPU or the like that executes a program stored in the storage unit and processes data.
  • the remote management device 30 issues an operation control command to the air conditioner 10 via the centralized controller 20 to control the operation of the air conditioner 10.
  • the centralized controller 20 is used to remotely monitor and remotely operate the plurality of air conditioners 10 from the remote management apparatus 30 via the intranet 60 of the office building 90.
  • the centralized controller 20 includes a first LAN port 24 and a second LAN port 25 having the same function.
  • the first LAN port 24 is disposed on the back surface of the main body 21 and is used for connection between the centralized controller 20 and the intranet 60 during normal operation of the refrigeration apparatus management system 100. Since the centralized controller 20 is a device embedded in the wall surface 40 such as a manager's room of the office building 90, the user of the centralized controller 20 looks at the first LAN port 24 during normal operation of the refrigeration apparatus management system 100. I can't.
  • the centralized controller 20 includes a changeover switch 26 for enabling one of the first LAN port 24 and the second LAN port 25 and disabling the other.
  • a maintenance worker of the refrigeration apparatus management system 100 can easily switch between the central controller 20 in the first mode and the central controller 20 in the second mode by operating the changeover switch 26.
  • the maintenance worker removes the centralized controller 20 embedded in the wall surface 40 of the manager room of the office building 90 from the wall surface 40, removes the connector of the LAN cable 80 from the first LAN port 24, and performs a maintenance work terminal. There is no need to perform a series of operations of attaching another LAN cable for connection to the first LAN port 24.
  • the maintenance worker can easily disable the first LAN port 24 and enable the second LAN port 25 by operating the changeover switch 26 to switch the centralized controller 20 from the first mode to the second mode. can do. Therefore, the maintenance worker operates the changeover switch 26 to temporarily switch to the second mode, and only performs the work of attaching the LAN cable for connecting to the maintenance work terminal to the second LAN port 25. It can be performed. Therefore, the centralized controller 20 according to the present embodiment can perform maintenance work more efficiently.
  • the second LAN port 25 and the changeover switch 26 are covered with the port cover 28 during normal operation of the refrigeration apparatus management system 100.
  • the maintenance worker removes the port cover 28 from the main body 21 and operates the changeover switch 26 to switch the centralized controller 20 from the first mode to the second mode.
  • the maintenance worker operates the changeover switch 26 to switch the centralized controller 20 from the second mode to the first mode, and the port cover 28 to the main body 21.
  • Install By attaching the port cover 28 to the main body 21, a user of the centralized controller 20 other than the maintenance worker is prevented from using the second LAN port 25 and the changeover switch 26. Therefore, the centralized controller 20 according to the present embodiment can prevent user mistakes during normal operation.
  • the boss 27 formed on the port cover 28 prevents the port cover 28 from being attached to the main body 21 in a state where the convex portion 26a of the changeover switch 26 is in the second mode position. To do. That is, the maintenance worker of the refrigeration apparatus management system 100 cannot attach the port cover 28 to the main body 21 in a state where the centralized controller 20 is in the second mode. Thereby, the maintenance operator can switch the centralized controller 20 from the second mode to the first mode without forgetting after the maintenance work is completed. Therefore, the centralized controller 20 according to this embodiment can prevent a maintenance worker from making mistakes during maintenance work.
  • the refrigeration apparatus management system 100 is a system that centrally monitors and controls the air conditioning apparatus 10 using the centralized controller 20.
  • the centralized controller 20 according to the present embodiment may be used in a system that centrally monitors and controls not only the air conditioner 10 but also equipment other than the air conditioner 10.
  • the second LAN port 25 of the centralized controller 20 is disposed on the front surface of the main body 21. However, if the second LAN port 25 is a part other than the back surface of the main body 21 and can be accessed in a state where the centralized controller 20 is embedded in the wall surface 40, the second LAN port 25 is arranged in another part of the main body 21. May be. For example, the second LAN port 25 may be disposed on the side surface of the main body 21.
  • the remote management apparatus 30 is connected to one centralized controller 20 installed in an office building 90, as shown in FIG. However, the remote management device 30 may be connected to a plurality of centralized controllers 20 installed in the office building 90. The remote management device 30 may be connected to the centralized controller 20 installed in each of the plurality of office buildings 90.
  • the remote management apparatus 30 is installed in an office building 90 and is connected to the centralized controller 20 via an intranet 60.
  • the remote management device 30 may be installed in a property other than the office building 90 and connected to the centralized controller 20 of the office building 90 via the Internet and a telephone line.
  • the centralized controller according to the present invention can efficiently perform maintenance work.
  • Centralized Controller 21 Main Body 22 Mounting Portion 23 Display 24 First LAN Port 25 Second LAN Port 26 Changeover Switch 27 Boss (Second Mode Prevention Mechanism) 28 Port cover 27 Boss (Cover attachment prevention mechanism) 30 Remote management device

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
PCT/JP2013/063667 2012-06-29 2013-05-16 集中コントローラ WO2014002635A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380030873.0A CN104380003B (zh) 2012-06-29 2013-05-16 集中控制器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012146730A JP5561319B2 (ja) 2012-06-29 2012-06-29 集中コントローラ
JP2012-146730 2012-06-29

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Cited By (1)

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WO2015156561A1 (en) 2014-04-11 2015-10-15 Lg Electronics Inc. Remote maintenance server, total maintenance system including the remote maintenance server and method thereof

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CN105091216A (zh) * 2015-07-27 2015-11-25 珠海格力电器股份有限公司 空调机组控制系统
CN108344110A (zh) * 2018-02-11 2018-07-31 四川虹美智能科技有限公司 一种线控器、空调控制系统及方法
CN109974206B (zh) * 2019-03-21 2021-08-13 广东美的制冷设备有限公司 空调系统及其控制方法、控制终端及存储介质

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JP2001256869A (ja) * 2000-03-09 2001-09-21 Energy Support Corp 開閉器用制御装置
JP2002031392A (ja) * 2000-07-14 2002-01-31 Sanyo Electric Co Ltd コントローラ及びこのコントローラを用いた空気調和システム
JP2003279113A (ja) * 2002-03-20 2003-10-02 Mitsubishi Electric Corp 空調管理装置及び初期設定装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP3129947A4 (en) * 2014-04-11 2018-04-04 LG Electronics Inc. Remote maintenance server, total maintenance system including the remote maintenance server and method thereof

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JP5561319B2 (ja) 2014-07-30
JP2014009885A (ja) 2014-01-20
CN104380003B (zh) 2017-06-16
CN104380003A (zh) 2015-02-25

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