KR20090041606A - Air conditioning system - Google Patents

Air conditioning system Download PDF

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Publication number
KR20090041606A
KR20090041606A KR1020070107213A KR20070107213A KR20090041606A KR 20090041606 A KR20090041606 A KR 20090041606A KR 1020070107213 A KR1020070107213 A KR 1020070107213A KR 20070107213 A KR20070107213 A KR 20070107213A KR 20090041606 A KR20090041606 A KR 20090041606A
Authority
KR
South Korea
Prior art keywords
authentication information
air conditioner
remote control
control device
authentication
Prior art date
Application number
KR1020070107213A
Other languages
Korean (ko)
Inventor
이진복
Original Assignee
엘지전자 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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020070107213A priority Critical patent/KR20090041606A/en
Publication of KR20090041606A publication Critical patent/KR20090041606A/en

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    • 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
    • F24F11/62—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/305—Authentication, i.e. establishing the identity or authorisation of security principals by remotely controlling device operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • 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

Abstract

In the air conditioning system according to the present invention, communication is maintained through authentication between the air conditioner and the remote control device. Therefore, the security performance on the communication connection between the air conditioner and the remote control device is improved.

Description

Air conditioning system

The present invention relates to an air conditioning system, and more particularly, to an air conditioning system for maintaining communication through authentication between an air conditioner and a remote control device.

In general, the air conditioner is controlled by using a remote control device. The remote controller is communicatively connected to the air conditioner and transmits and receives a signal for controlling the operation of the air conditioner based on the operation information of the air conditioner. In order for communication between an air conditioner and a remote control device to be made, a protocol that is a communication protocol between the air conditioner and an external remote control device is required.

However, when a protocol between an air conditioner and a remote control device is disclosed, a security weakness occurs because an air conditioner that communicates based on the protocol can be controlled by communicating with any remote control device.

An air conditioning system of the present invention aims to maintain communication through authentication between an air conditioner and a remote control device.

An air conditioning system of the present invention includes an air conditioner having a first authentication information database for storing first authentication information, connected to the air conditioner to control the operation of the air conditioner, and storing second authentication information. And a remote control device provided with a second authentication information database, and if the first authentication information and the second authentication information succeed in authentication through communication between the air conditioner and the remote control device, the air. Maintain communication with the harmonic and the remote control. At this time, when the communication between the air conditioner and the remote control device, the signal that the air conditioner requests the second authentication information to the remote control device or the remote control device to request the first authentication information to the air conditioner The authentication procedure can be initiated by the signal.

In the present invention, while the communication between the air conditioner and the remote control is maintained, the air conditioner transmits a signal for requesting the second authentication information to the remote control a plurality of times, or the remote control device The transmitter may transmit a signal for requesting the first authentication information to the air conditioner a plurality of times.

In the present invention, the remote control device may be a demand control device for controlling the operation state of a plurality of equipment including the air conditioner based on a method of charging power according to countries.

In the air conditioning system according to the present invention, even if the communication protocol between the air conditioner and the external remote control device is disclosed, it is determined whether each authentication information corresponds to each other and maintains communication. Therefore, the security performance on the communication connection between the air conditioner and the remote control device is improved.

1 is a block diagram showing the configuration of an air conditioning system 100 according to an embodiment of the present invention, Figure 2 is a view showing the configuration and flow of control signals of the remote control device 110 shown in FIG. Block diagram. Referring to FIG. 1, the air conditioning system 100 includes air conditioners 140, local controllers 150, and a remote controller 110. Each air conditioner 140 includes a plurality of indoor units 130 and an outdoor unit 120. The indoor units 130 are disposed in the indoor spaces, respectively, and the outdoor unit 120 is disposed in the outdoor spaces. In each air conditioner 140, the indoor units 130 and the outdoor unit 120 are communicatively connected to each other through the first network 161. In addition, the outdoor units 120 are communicatively connected to each other through the second network 162. RS-485 communication is performed on the first network 161, and RS-485 communication is performed on the second network 162. The RS485 communication refers to a standard for a multipoint communication line as one of the interface standards of serial transmission. However, the present invention is not limited to the above communication method.

Referring to FIG. 1, each local control device 150 is disposed in each indoor space, and each local control device 150 communicates with the indoor unit 130 disposed in the indoor space of the air conditioner 140. Manipulate driving information. Each local controller 150 includes a plurality of driving operation keys (not shown), and the user controls the operation of the air conditioner 140 by operating the plurality of driving operation keys (not shown). In addition, each local controller 150 further includes a display panel (not shown) for displaying operation information of the air conditioner 140. The local controller 150 and the indoor unit 130 communicate using wired or wireless, and the local controller 150 may be a general wired remote controller or a wireless remote controller.

Referring to FIG. 1, the remote controller 110 is communicatively connected with the air conditioners 140 through the second network 162, and is independently of the local controllers 150. Control their driving. In addition, the remote controller 110 may control setting information of the local controller 150, and may limit some or all of the manipulation functions of the local controller 150.

The remote controller 110 is connected to the outdoor unit 120 of the air conditioner to monitor the operating state of the air conditioner and control the operation of the integrated or individually. The remote controller 120 may be configured as an external input device connected to the outdoor unit 120 through a communication line, and communicates with the outdoor unit 120 to control the operation of the indoor unit 130 disposed in the indoor space. It is connected. Here, the remote controller 110 and the outdoor unit 120 may transmit and receive data in various ways such as power line, wireless communication, LAN, as well as RS-485 communication through the cable. Therefore, between the remote control device 110 and the outdoor unit 120, the data transmitted and received by the remote control device 110 and the outdoor unit 120, and the data transmitted and received by the outdoor unit 120 and the indoor unit 130 for mutual conversion The protocol converter 170 may further include.

Referring to FIG. 2, the air conditioner 140 includes a first authentication information database 142, a first authentication unit 141, and a first data transmission / reception unit 143. The first authentication information database 142 stores the first authentication information, and the first authentication information is at least one. The first authentication information database 142, the first authentication unit 141, and the first data transmission / reception unit 143 are provided at the outdoor unit 120 or the indoor unit 130 side of the air conditioner, preferably the outdoor unit 120. ) Is provided on the side. The remote control apparatus 110 includes a second authentication information database 112, a second authentication unit 111, a display unit 114, and a second data transmission / reception unit 113. The second authentication information database 112 stores second authentication information, and the second authentication information is at least one. The first authentication information and the second authentication information are stored in a table format in the first authentication information database 142 and the second authentication information database 112, respectively. When the second authentication information exists on each table and the second authentication information corresponding to the first authentication information exists, it is determined that the first and second authentication information correspond to each other.

The remote controller 110 is communicatively connected with the air conditioners 140 through the second network 162, and the first data transmitter / receiver 143 and the second data transmitter / receiver are connected via the second network 162. Communication between the 113 is made.

In general, in order for communication between the air conditioner 140 and the remote controller 110 to be made, a protocol that is a communication protocol between the air conditioner 140 and the external remote controller 110 is required, and FIG. 1. As shown in the figure, the protocol converter 170 is further included between the remote controller 110 and the air conditioner 140. However, when a protocol between the air conditioner 140 and the remote control device 110 is disclosed to the outside, the air conditioner 140 performing communication based on the protocol can be connected to any remote control device. Will be. Therefore, it is difficult to increase the reliability of the security of the communication connection between any remote control device and the air conditioner only by the security of the communication protocol. Therefore, an authentication procedure is added between the air conditioner and the remote control device to solve the weak security problem. Can be.

First, when the air conditioner 140 and the remote control device 110 is in communication connection, the first authentication unit 141 through communication between the first data transmission and reception unit 143 and the second data transmission and reception unit 113. Or at least one of the second authentication units 111 determines whether the first authentication information and the second authentication information correspond to each other.

The authentication procedure through the first authentication information and the second authentication information is performed in at least one of the first authentication unit 141 or the second authentication unit 111. For example, in the case of the authentication procedure in the first authentication unit 111, when communication between the air conditioner 140 and the remote control device 110 is connected, the first authentication unit 141 is the second authentication unit. It starts by sending a signal for requesting second authentication information to 111. For example, when installing the air conditioner 140 and the remote control device 110 for the first time, in order to perform mutual authentication, the second authentication information is transferred from the first authentication unit 141 to the second authentication unit 111. Send the request signal. The request signal is transmitted through the first data transmitter / receiver 143, and the second data transmitter / receiver 113 receives the request signal. The second authentication unit 111 reads the second authentication information stored in the second authentication information database 112 and transmits the second authentication information to the first data transmission / reception unit 143 through the second data transmission / reception unit 113. The first authentication unit 141 reads the first authentication information corresponding to the second authentication information received from the first data transmission / reception unit 143 from the table of the first authentication information database 142, determines whether they match each other, and authenticates the authentication. Do this.

On the other hand, in the case of the authentication process in the second authentication unit 111, the authentication process may be started by requesting the first authentication information from the second authentication unit 111 to the first authentication unit 141. In this case, the data processing flow is reversed when the first authentication unit 141 transmits the request signal.

At least one of the first authentication unit 141 or the second authentication unit 111 determines whether the first authentication information and the second authentication information correspond to each other, and if the first authentication information and the second authentication information correspond to each other, It is determined that the authentication is successful and maintains communication with the air conditioner and the remote control unit. On the other hand, when at least one of the first authentication unit 141 or the second authentication unit 111 determines that the first authentication information and the second authentication information do not match each other, the air conditioner 140 and the remote control Communication between the devices 110 is blocked. That is, when the first authentication information and the second authentication information do not match each other, the first authentication unit 141 of the air conditioner or the second authentication unit 111 of the remote control determines that communication with an inappropriate object is connected. Communication is blocked for security reasons.

Meanwhile, the air conditioner 140 does not receive the second authentication information through the communication between the air conditioner 140 and the remote control device 110, or the remote control device 110 does not receive the first authentication information. If not, communication between the air conditioner 140 and the remote control device 110 is blocked. That is, even when the communication between the air conditioner 140 and the remote control device 110 is connected, when the first data transmission / reception unit 143 does not receive the second authentication information or the second data transmission / reception unit 113 There is a case where the first authentication information is not received. In the above case, the first authentication unit 141 or the second authentication unit 111 does not send a signal for requesting the first authentication information or the second authentication information, or the first data transmission / reception unit 143 and the second data. It occurs when the signal for requesting the first authentication information or the second authentication information from each other between the transmission and reception unit 113 cannot be mutually transmitted and received, so that the data of the authentication information between the air conditioner 140 and the remote control device 110. This is the case when communication is impossible. Therefore, since the authentication cannot be performed between the air conditioner 140 and the remote control device 110, the communication between the air conditioner 140 and the remote control device 110 is blocked.

On the other hand, in a state where communication between the air conditioner 140 and the remote control device 110 is maintained, the first authentication unit 141 receives a plurality of signals for requesting second authentication information from the second authentication unit 111. Can be sent twice. Specifically, when the communication connection between the air conditioner 140 and the remote control device 110 is made for the first time, an authentication procedure is started by requesting authentication information by the first authentication unit 141 or the second authentication unit 111. However, even if authentication is successful through the authentication procedure, it is necessary to perform the authentication procedure repeatedly thereafter. That is, not only at the time of initial communication connection between the air conditioner 140 and the remote control device 110, but also in the state in which communication is maintained, it is possible to maintain the reliability of security through repeated authentication procedures. Therefore, the signal for requesting the second authentication information from the first authentication unit 141 of the air conditioner 140 to the second authentication unit 111 of the remote control device 110 is transmitted a plurality of times, or the second authentication unit. By transmitting a signal for requesting the first authentication information to the first authentication unit 141 multiple times at 111, a plurality of authentication procedures are performed.

FIG. 3 is an embodiment of a screen displayed on the display unit 114 of the remote control apparatus when the authentication in the second authentication unit 111 of the air conditioning system shown in FIG. 1 fails. The remote controller 110 includes a display unit 114 for displaying operation information of the air conditioner 140, and the display unit 114 displays whether the first authentication information and the second authentication information match each other. do. That is, when the first authentication information and the second authentication information match each other, the second authentication unit 111 converts the matched result signal into an image signal and outputs the image signal to the display unit 114, and the first authentication information and the second authentication information. If the information does not match with each other, the resultant signal that is not matched may be converted into an image signal and output to the display unit 114. Here, the display unit 114 may be configured as a liquid crystal display (LCD), and may be integrated into a single monitor of a touch screen type according to the producer. However, the present invention is not limited to the above display method. Referring to FIG. 3, when authentication fails in the second authenticator, the display may be displayed in the form of a pop-up window 115 on the display and may include a warning that the communication connection is blocked.

FIG. 4 is a flowchart illustrating an embodiment of an authentication procedure in the first authentication unit of the air conditioning system illustrated in FIG. 1. Referring to Figure 4, it will be described in detail below the authentication process of the air conditioning system.

First, the user connects the air conditioner 140 and the remote control device 110 (step S10). When the air conditioner 140 and the remote control device 110 are connected to each other, the signal for requesting the second authentication information is transmitted from the first authentication unit 141 to the second authentication unit 111 (step S20). The second authentication unit 111 transmits the second authentication information previously stored in the second authentication information database 112 to the second data transmission / reception unit 113, and the second data transmission / reception unit 113 again reconstructs the first data. Transmit to the transceiver 143. The first authenticator 141 compares the received second authentication information with the first authentication information previously stored in the first authentication information database 142 to determine whether they match each other (step S30). If the first authentication information and the second authentication information match each other, the first authentication unit 141 maintains communication between the air conditioner 140 and the remote control device 110 and converts the resultant signal into an image signal. After converting the signal to the display unit 114 of the remote controller, the resultant signal is output to the display unit 114 and displayed (S40).

do. If the first authentication information and the second authentication information do not match with each other, the communication between the air conditioner 140 and the remote control device 110 is cut off, and the resultant signal that is not matched is converted into an image signal to display the display unit ( 114 is displayed and displayed (step S100), and the authentication procedure is finished.

If authentication is successful, the second authentication unit 111 determines whether a predetermined time has elapsed (step S50). If it is determined that the predetermined time has elapsed, the second authentication information is changed to other second authentication information on the table of the second authentication information database 112. On the other hand, the first authentication unit 141 determines whether the predetermined time has elapsed (step S50). The second authentication unit 111 transmits a signal for requesting the second authentication information again. The second authentication unit 111 transmits the changed second authentication information to the first authentication unit 141 (step S60). When the second authentication information is received from the second authentication unit 111, the first authentication unit 141 again determines whether the first authentication information and the second authentication information match (step S70). This is determined by reading whether there is first authentication information corresponding to the changed second authentication information on the table of the first authentication information database 142, and maintaining or blocking communication according to whether the authentication procedure is successful (step S80). (Step S100).

Here, FIG. 4 is a flowchart illustrating repeating the authentication procedure once after a predetermined time has elapsed, but it is a matter of course that the authentication procedure can be repeatedly performed at a predetermined time interval. 4 is a flowchart illustrating an authentication procedure in the first authentication unit 141, but an authentication procedure in the second authentication unit 111 may also be displayed in the same flowchart. That is, in a state where communication between the air conditioner 140 and the remote control device 110 is maintained, the remote control device 110 transmits a signal for requesting the first authentication information to the air conditioner 140 a plurality of times. I can send it. In this case, the air conditioner 140 changes the first authentication information at predetermined time intervals, and the remote controller 110 transmits a signal requesting the first authentication information to the air conditioner 140. When the changed first authentication information and the second authentication information correspond to each other, communication between the air conditioner 140 and the remote control device 110 may be maintained. That is, in addition to the change of the second authentication information, the first authentication information may be changed at a predetermined time period. 2 The authentication unit 111 may perform the authentication procedure.

The air conditioning system of the present invention can be implemented in various embodiments. A description with reference to FIGS. 5 and 6 is as follows. 5 is a block diagram showing the configuration of an air conditioning system 200 according to another embodiment of the present invention. The following description will focus on differences from the above-described embodiment.

Referring to FIG. 5, the air conditioning system 200 includes an air conditioner 240, a local controller 250, and a remote controller 210. Each air conditioner 240 includes a plurality of indoor units 230 and an outdoor unit 220. In each air conditioner 240, the indoor units 230 and the outdoor unit 220 are communicatively connected to each other through the first network 261. In addition, the outdoor units 220 are communicatively connected to each other through the second network 262. Each local controller 250 is disposed in each indoor space, and each local controller 250 communicates with the indoor unit 230 disposed in the indoor space to manipulate driving information of the air conditioner 240.

Referring to FIG. 5, the remote controller 210 is communicatively connected to the air conditioner 240 through the second network 262 and independently of the local controllers 250. To control. In addition, the remote controller 210 may control the setting information of the local controller 250, and may limit some or all of the manipulation functions of the local controller 250. The user terminal 300 connects to the remote control device 210 via the third network 263, and the third network 263 is an internet network. The user terminal 300 is a device capable of accessing a web server. , PDA, mobile phone, etc. The remote control apparatus 210 of the present invention may have a web server function, and may be connected to the remote control apparatus 210 using the user terminal 300 to remotely control the air conditioner 240. In this case, when the communication connection between the remote control unit 210 and the air conditioner 240, the communication between the remote control unit 210 and the air conditioner 240 can be maintained or blocked.

FIG. 6 is a block diagram illustrating a configuration of an equipment system including an air conditioner according to another embodiment of the present invention. The following description will focus on differences from the above-described embodiment.

Referring to FIG. 6, the equipment system 390 includes an air conditioner 341, ventilators 342 and lighting devices 343. Each air conditioner 341 includes a plurality of indoor units (not shown) and a plurality of outdoor units (not shown).

The equipment system 390 includes a first local controller 361 that controls the air conditioners 341, a second local controller 362 that controls the ventilators 342, and an illumination device 343. And a third local control device 363 for controlling. However, the first local controller 361 may control not only the air conditioners 341 but also at least some of the ventilation devices 342 and at least some of the lighting devices 343. That is, the first, second, and third local control devices 361, 362, and 363 may control different kinds of equipment. The demand control device 300 and the first, second, and third local control devices 361, 362, and 363 are connected to the network 370.

Here, the remote control device of the present invention may be a demand control device (300). That is, when the air conditioners 341 and the demand control device 300 communicate with each other, the first authentication information stored in the first authentication information database of the air conditioner 341 and the second authentication of the demand control device 300. When the second authentication information previously stored in the information database 330 succeeds in authentication with each other, communication with the air conditioner 341 and the demand control device 300 may be maintained.

Specifically, referring to FIG. 6, the demand control device 300 includes a demand control unit 310, an input unit 320, a second authentication information database 330, and a display unit 350. The input unit 320 performs a function of receiving a user's manipulation signal and includes a plurality of input keys (not shown). However, the input unit 320 may have a touch panel method.

The second authentication information database 330 includes second authentication information, and the demand control unit 310 includes a second authentication unit (not shown). Therefore, when the air conditioners 341 and the demand control device 300 communicate with each other, the first authentication information previously stored in the first authentication information database (not shown) of the air conditioners 341 and the demand control device ( The authentication may be performed by determining whether the second authentication information stored in the second authentication information database 330 of 300 matches each other. The specific authentication procedure using the first authentication information and the second authentication information is omitted because it is the same method as described above.

Meanwhile, the second authentication information database 330 may store a plurality of demand control methods. Here, the demand control methods are a method of controlling the operation state of a plurality of equipment including an air conditioner based on a method of charging power according to countries. The demand controller 310 demand-controls the first, second, and third local control devices 361, 362, and 363 according to a demand control method selected from the second authentication information database 330. Accordingly, the demand control device 300 may control the air conditioners 341, the ventilation devices 342, and the lighting devices 343.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The present invention can be used in the air conditioning system bar security performance is improved on the communication connection between the air conditioner and the remote control device.

1 is a block diagram showing the configuration of an air conditioning system 100 according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration and flow of control signals of the remote controller 110 shown in FIG. 1.

3 is a view illustrating an example of a screen displayed on a display unit of a remote controller when authentication fails in the second authentication unit of the air conditioning system illustrated in FIG. 1.

FIG. 4 is a flowchart illustrating an embodiment of an authentication procedure in the first authentication unit of the air conditioning system illustrated in FIG. 1.

5 is a block diagram showing the configuration of an air conditioning system 200 according to another embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration of an equipment system including an air conditioner according to another embodiment of the present invention.

<Simple description of the code for the main part of the drawing>

100,200,341: Air conditioner 110,210: Remote control device

111: second authentication unit 112: second authentication information database

113: second data transmission and reception unit 114: display unit

120: outdoor unit 130: indoor unit

140,240: air conditioner 141: first certification unit

142: first authentication information database 143: first data transmission and reception unit

150, 250: Local control unit 170: Protocol converter

Claims (11)

An air conditioner having a first authentication information database storing first authentication information; A remote control device connected to the air conditioner to control the operation of the air conditioner, and having a second authentication information database configured to store second authentication information; Through the communication between the air conditioner and the remote control device, if the first authentication information and the second authentication information is matched with each other successfully, the air conditioning system for maintaining communication with the air conditioner and the remote control device . The method according to claim 1, And when the first authentication information and the second authentication information do not coincide with each other, communication between the air conditioner and the remote control device is blocked. The method according to claim 1, When the air conditioner does not receive the second authentication information or the remote control device does not receive the first authentication information through communication between the air conditioner and the remote control device, the air conditioner and the remote control. An air conditioning system in which communication between devices is blocked. The method according to claim 1, And when the communication between the air conditioner and the remote control device is performed, an authentication process is initiated by a signal for requesting the second authentication information to the remote control device. The method according to claim 1, And when the communication between the air conditioner and the remote control device is performed, an authentication process is initiated by a signal for requesting first authentication information from the remote control device to the air conditioner. The method according to claim 1, And a state in which communication between the air conditioner and the remote control device is maintained, the air conditioner transmits a signal for requesting the second authentication information to the remote control device a plurality of times. The method according to claim 6, The remote control apparatus changes the second authentication information at a predetermined time interval, and the air conditioner transmits a signal for requesting the second authentication information to the remote control apparatus, and the changed second authentication information and the first information. And if the authentication information matches each other, maintaining the communication between the air conditioner and the remote control device. The method according to claim 1, And a state in which communication between the air conditioner and the remote control device is maintained, the remote control device transmits a signal for requesting the first authentication information to the air conditioner a plurality of times. The method according to claim 8, The air conditioner changes the first authentication information at a predetermined time interval, and the remote controller transmits a signal for requesting the first authentication information to the air conditioner, and the changed first authentication information and the second authentication. An air conditioning system that maintains communication with the air conditioner and the remote control if the information matches. The method according to claim 1, The remote control device includes a display unit for displaying operation information of the air conditioner, And the display unit displays whether the first authentication information and the second authentication information correspond to each other. The method according to claim 1, And the remote control device is a demand control device for demand-controlling an operating state of a plurality of equipments including the air conditioner based on a method of charging power according to countries.
KR1020070107213A 2007-10-24 2007-10-24 Air conditioning system KR20090041606A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120059010A (en) * 2010-11-30 2012-06-08 엘지전자 주식회사 A method for controlling air conditioning system
KR20120064325A (en) * 2010-12-09 2012-06-19 엘지전자 주식회사 Air conditioning system
KR20150039472A (en) * 2013-10-02 2015-04-10 엘지전자 주식회사 Air Conditioner AND Controlling Method
EP3141833A4 (en) * 2015-03-12 2017-07-05 Mitsubishi Electric Corporation Air conditioner connection system
WO2022189589A1 (en) * 2021-03-12 2022-09-15 Belimo Holding Ag Room unit for an hvac system and method for exchanging data between a mobile device and a room unit or an hvac system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120059010A (en) * 2010-11-30 2012-06-08 엘지전자 주식회사 A method for controlling air conditioning system
KR20120064325A (en) * 2010-12-09 2012-06-19 엘지전자 주식회사 Air conditioning system
KR20150039472A (en) * 2013-10-02 2015-04-10 엘지전자 주식회사 Air Conditioner AND Controlling Method
EP3141833A4 (en) * 2015-03-12 2017-07-05 Mitsubishi Electric Corporation Air conditioner connection system
CN107250681A (en) * 2015-03-12 2017-10-13 三菱电机株式会社 Air conditioner connects system
CN107250681B (en) * 2015-03-12 2019-09-24 三菱电机株式会社 Air conditioner connects system
US10628564B2 (en) 2015-03-12 2020-04-21 Mitsubishi Electric Corporation Air conditioner connection system
WO2022189589A1 (en) * 2021-03-12 2022-09-15 Belimo Holding Ag Room unit for an hvac system and method for exchanging data between a mobile device and a room unit or an hvac system

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