KR20160116735A - Network system and method for obtaining information - Google Patents

Network system and method for obtaining information Download PDF

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Publication number
KR20160116735A
KR20160116735A KR1020150044920A KR20150044920A KR20160116735A KR 20160116735 A KR20160116735 A KR 20160116735A KR 1020150044920 A KR1020150044920 A KR 1020150044920A KR 20150044920 A KR20150044920 A KR 20150044920A KR 20160116735 A KR20160116735 A KR 20160116735A
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South Korea
Prior art keywords
information
server
measurement unit
energy
energy measurement
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KR1020150044920A
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Korean (ko)
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KR101695538B1 (en
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안창한
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엘지전자 주식회사
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    • 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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
    • 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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H04L41/0833—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for reduction of network energy consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

The present invention relates to a network system and a method for acquiring information. According to an aspect of the present invention, there is provided a water circulation system linked to a refrigerant cycle, comprising: a water-refrigerant heat exchanger for exchanging heat between water and a refrigerant; An outdoor unit including a compressor for compressing the refrigerant and an outdoor heat exchanger for exchanging heat between the refrigerant and outdoor air; A refrigerant pipe connecting the outdoor heat exchanger and the water-refrigerant heat exchanger; A water pipe connecting at least one of an indoor cooling and heating unit for indoor cooling and heating and a hot water supply unit for supplying hot water, and the water refrigerant heat exchanger; A temperature sensor provided on the refrigerant pipe for measuring a temperature of the refrigerant pipe; And a valve device provided on the refrigerant channel of the refrigerant pipe to adjust an amount of refrigerant flowing into the water-refrigerant heat exchanger, wherein the valve device adjusts the opening degree based on the temperature measured through the temperature sensor do.

Description

Network system and method for obtaining information

The present invention relates to a network system and a method for acquiring information.

BACKGROUND ART [0002] Household appliances generally provided at home include a washing machine, a refrigerator, a cooking appliance or a vacuum cleaner. BACKGROUND OF THE INVENTION [0002] Electrical appliances in recent years include a communication unit, and can receive energy related information through communication with an energy measuring unit installed in a power company.

In the prior art, Korean Patent Laid-Open Publication No. 2012-0075572 (published on July 30, 2012), electrical products are disclosed.

The electrical product can communicate with an energy management unit, which can communicate with an energy measurement unit. The energy measuring unit is configured and managed by a power company.

However, according to the prior art, there is a problem that the electric appliance can not receive the information provided by the electric power company when the energy measurement unit is not provided or the energy measurement unit does not have the communication unit according to the installation position of the electric appliance.

Also, although the registration method by communication between the energy management unit and the energy measurement unit may be different depending on the type of the energy measurement unit, according to the prior art, there is a problem that it can not cope with various registration methods.

It is an object of the present invention to provide a network system and an information acquisition method capable of acquiring information related to energy provided by a power company.

According to an aspect of the present invention, there is provided a gateway server for receiving energy related information from an energy measurement unit capable of communicating with a power company server or a power company server; And a home appliance for controlling a load based on information received from the gate server, the gate server performing a DNS-SD request specifying security information for registration, receiving a response to a DNS-SD request A network system is provided which attempts to register with the energy measuring unit in any one of a plurality of registration methods for registration.

According to the proposed invention, since the home appliances can perform two registration methods irrespective of the policy of the electric power company, there is an advantage that compatibility can be ensured.

In addition, there is an advantage that the household appliances can receive the energy information provided by the electric power company irrespective of the installation area or location.

In addition, energy information is received and transmitted through a plurality of communication methods through the first communication unit and the second communication unit, and the information acquisition process is stable.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of a network system in accordance with an embodiment of the present invention.
Fig. 2 is a block diagram schematically showing a household appliance constituting the network system of Fig. 1; Fig.
Fig. 3 is a block diagram schematically showing a gate server constituting the network system of Fig. 1; Fig.
FIG. 4 is a flowchart illustrating a method of connecting a communication of a gate server according to an embodiment of the present invention; FIG.
5 is a flowchart specifically illustrating a registration method of a gate server and an energy measurement unit;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

FIG. 1 is a schematic view of a network system according to an embodiment of the present invention. FIG. 2 is a block diagram schematically showing a household appliance constituting the network system of FIG. 1, FIG. 2 is a block diagram schematically showing a gate server constituting a gateway server.

1 to 3, the network system according to an embodiment of the present invention may include a home appliance 10 connected via a network.

The household appliance 10 may include various products such as a refrigerator 11, a cooking appliance 12, a washing machine 13, a vacuum cleaner, a water purifier, and an air conditioner. In this specification, Quot;

The household appliance (10) can communicate with other household appliances. The appliance 10 can also communicate with a gate server 60 that can receive energy related information from an external server 50 or a power company's server 30 and deliver it to the appliance 10 . Communication between the household appliances 10 can be performed through power line communication (PLC). Power line communication is also performed between the gate server (60) and the electric product (10). To this end, the gate server 60 and the electric product 10 may be provided with power lines for performing communication.

The gate server 60 may communicate with the energy measurement unit 20 when an energy measurement unit 20 (ESI) is installed in a home, a building, or the like, or around a home or a building.

The external server 50 may include a server operated by a manufacturer of the home appliance 10 or a company commissioned by a manufacturer, a server for a home appliance service, a web server, and the like.

In this specification, there is no limitation on the type of the external server 50. However, when the gate server 60 can not communicate with the energy measurement unit 20, It is possible to receive relevant information.

The energy measuring unit 20 can communicate with the server 30 of the power company and when the gate server 60 directly communicates with the energy measuring unit 20, And the like. That is, the energy measurement unit 20 and the gate server 60 on the side of the household appliance 10 are connected to a gateway for transmitting the information of the server 30 of the power company to the household appliance 10, It plays a role.

The energy measuring unit 20 can measure at least the electric power consumption of the household appliance 10 and can transmit energy related information to the household appliance 10 through the gate server 60. [

When the gate server 60 communicates with the external server 50, the external server 50 communicates with the server 30 of the power company and receives information related to energy from the server 30 of the power company , And may transmit information related to the received energy to the gate server 60.

The gate server 60 includes a server control unit 61 for controlling the function of the gate server 60 and a first communication unit for communicating with the energy measurement unit 20 or the external server 50 63, a second communication unit 56 for communicating with the home appliance 10, and a memory 65 for storing information related to the received energy.

The first communication unit 63 may be a Wi-Fi modem. The energy measurement unit 20 may also have a communication unit for communicating with the communication unit 63 through the same communication method so that the first communication unit 63 and the energy measurement unit 20 can communicate with each other.

The first communication unit 63 may include a Smart Energy Profile (SEP) 2.0 protocol. The SEP2.0 protocol has a short-form device identifier (SFDI), and the communication control unit can extract the SFDI using the hashing program and store it in the memory 65. [ In this specification, SFDI can be referred to as security information for registration.

The user can access the server 30 of the power company using the Internet or a portable terminal and register the SFDI information included in the gate server 60. [

The first communication unit 63 can communicate with either the energy measurement unit 20 or the external server 50 through the wireless router 40. [

The second communication unit 65 may be a power line communication modem for performing power line communication with the household electrical appliances 10.

Therefore, the gate server 60 receives and stores energy related information from the energy measurement unit 20 or the external server 50 through Wi-fi communication through the first communication unit 63, The stored information is transmitted to the household appliance (10) through power line communication through the second communication unit (65).

The home appliance 10 includes a control unit 100 for controlling the function of the home appliance 10, an operation unit 110 for inputting various commands and information such as an operation command of the home appliance 10, A display unit 120 capable of displaying operation information of the household appliance 10, a load 130 operated by receiving power, a home appliance 60 capable of communicating with the gate server 60 or other household appliances, And a product communication unit 140.

The appliance communication unit 140 may perform power line communication (PLC). Thus, the appliance 10 receives energy-related information from the gate server 60 via power line communication with the gate server 60. [

Hereinafter, the communication connection method of the household electric appliances 10 will be described.

4 is a flowchart illustrating a communication connection method of a gate server according to an embodiment of the present invention.

Referring to FIGS. 1 and 4, the household appliance 10 is powered on for use of the household appliance 10 (S1). When the household appliance 10 is powered on, the gate server 60 is turned on. The first communication unit 63 of the gate server 60 may attempt to establish a communication connection with the energy measuring unit 20 through the wireless router 40 (S2).

Then, it is determined whether or not the first communication unit 63 can communicate with the energy measurement unit 20.

The first communication unit 63 can search the energy measurement unit 20 using a DNS-based service discovery (DNS-SD), for example.

If the first communication unit 63 can communicate with the energy measurement unit 20, the first communication unit 63 is communicatively connected to the communication unit of the energy measurement unit 20 (S4).

When the first communication unit 63 and the energy measurement unit 20 are communicatively connected to each other, the first communication unit 63 periodically requests time information to the energy measurement unit 20 and the energy measurement unit 20 May transmit the time information to the first communication unit 63. [ The first communication unit 63 receives time information from the energy measurement unit 20 so that the time between the home appliance 10 and the energy measurement unit 20 can be synchronized.

Also, the first communication unit 63 can receive energy related information (hereinafter referred to as "energy information") from the energy measurement unit 20. [

The energy information may include electricity bill information according to time, day, week, or month, and energy reduction information for the household appliance 10 to reduce energy.

The first communication unit 63 may intermittently receive the electric bill information from the energy measuring unit 20. [ The first communication unit 63 can receive the energy reduction information simultaneously with the reception of the electricity bill information or irrespective of the information of the electricity bill. That is, when the time period for energy reduction is determined, the energy measuring unit 20 can transmit the energy reduction information to the first communication unit 63 before the time period.

The energy reduction information may be stored in the server of the utility company 10 so that the appliance 10 stops operating or the appliance 10 consumes less electric power or the electricity use fee of the appliance 10 is reduced. 30). ≪ / RTI >

The energy reduction information may be transmitted or received as a true or false signal, such as a Boolean, on the network. That is, the gate server 60 can receive a stop signal (turn off signal) or a lower signal (lower power signal) through the energy measurement unit 20.

When the household appliance 10 recognizes the energy reduction information through the gate server 60, the control unit 100 of the home appliance 10 sets the output of the home appliance 10 to 0 (stop operation) The load 130 can be controlled to reduce the load.

Alternatively, the energy reduction information may include length information of a time for which energy should be reduced (hereinafter referred to as "reduction time zone information"). The method for reducing energy in the household appliance 10 may be different according to the reduction time zone information.

Illustratively, when the length of time for which the energy is to be reduced is greater than the reference value, the household appliance 10 can operate in the first power saving mode, and when the length of time to reduce the energy is less than the reference value, The product 10 can be operated in the second power saving mode. In this case, each power saving mode is a mode for reducing the power consumption of the household appliance 10 in the abatement time period as compared with the case where the power consumption is not the power saving mode but the normal mode.

If the first communication unit 63 can not communicate with the energy measurement unit 20 in step S3, the first communication unit 63 attempts to establish a communication connection with the external server 50 S5).

The energy measuring unit 20 may be connected to the first communication unit 63 via the energy measuring unit 20. The energy measuring unit 20 may be connected to the first communication unit 63 through the energy measuring unit 20, The first communication unit 63 may include a communication unit and may use a communication method different from that of the first communication unit 63. [

The first communication unit 63 may transmit the inherent code and security key of the home appliance 10 to the external server 50 in the process of establishing communication between the first communication unit 63 and the external server 50 (S6).

When the first communication unit 63 communicates with the external server 50, the first communication unit 63 transmits the current location of the home appliance 10 and the home appliance 10 to the external server 50, It is possible to transmit electric power company information providing electric power to be supplied.

At this time, the installation area and the electric power company information of the household appliance 10 are inputted through the operating section 110 of the household appliance 10 and communicated between the appliance 10 and the gate server 60 And may be stored in the memory 65.

When the gate server 60 transmits the usage area and the electric power company information of the household appliance 10 to the external server 50, the external server 50 transmits energy information from the server 30 of the electric power company . Then, the gate server 60 can receive the time information and the energy information from the external server 50 (S7).

The first communication unit 63 receives the time information from the external server 50 in the same manner as the information transmission and reception between the energy measurement unit and the communication unit. Time can be synchronized.

In addition, the first communication unit 63 can intermittently receive energy information from the external server 50. [

When energy information is received by the gate server 60 through the above process, the received information is stored in the memory 67 of the gate server 60. The second communication unit 65 may perform power line communication with the appliance communication unit 140 of the household appliance 10 to transmit the stored information to the memory 67 (S8). The second communication unit 65 can communicate with a home appliance among the home appliances 10 and can communicate with all household appliances included in the home to transmit the received information. When the second communication unit 65 communicates with the household appliance, the appliance receiving the energy information performs power line communication with the other household appliances so as to transmit the received information from the gate server 60 have.

According to the present invention, when the gate server 60 can communicate with the energy measuring unit, it can communicate with the energy measuring unit in an attempt to communicate with and communicate with the energy measuring unit, receive energy information from the energy measuring unit, It is possible to receive the energy information and to respond to the request for reducing the energy usage according to the communication connection with the external server communicable with the server of the electric power company.

That is, according to the present invention, there is an advantage that the household appliance 10 can receive the energy information provided by the electric power company irrespective of the installation area or position of the electric appliance 10.

Further, by receiving and transmitting energy information through a plurality of communication methods through the first communication unit 63 and the second communication unit 65, the gate server 60 can easily cope with the policy change of the utility company, It is advantageous to transmit energy information stably to household appliances.

5 is a flowchart specifically illustrating a registration method of the gate server and the energy measurement unit.

1, 4 and 5, when the gate server 60 attempts to communicate with the energy measurement unit 20, the first communication unit 63 of the gate server 60 transmits an SFDI -form device identier (S11). The SFDI extracted as described above can be stored in the memory 67 of the gate server 60. [

Then, the security key may be input to the gate server 60 (S12). The security key may be obtained from the utility company upon contracting with the utility. That is, the user may receive the security key off-line from the utility. The input security key may be stored in the memory 67.

Then, the first communication unit 63 specifies the SFDI it has and performs a DNS-SD request (S13).

The electric power company may store or not store the SFDI registered in advance by the user in the energy measuring unit 20 in a state where the energy measuring unit 20 is installed in a home or a building.

The first communication unit 63 determines whether a DNS-SD response to the SFDI has been received (S14). For example, when the energy measurement unit 20 has the SFDI of the first communication unit 63 of the gate server 60, that is, when the SFDI registered by the user in advance is stored in the energy measurement unit, The measurement section 20 can transmit a response indicating that the measurement section 20 has the SFDI to the first communication section 140. [ On the other hand, if the energy measuring unit 20 does not have the SFDI of the first communication unit 140, the gateway 60 will not respond.

If it is determined in step S14 that the first communication unit 63 of the gate server 60 receives a response from the energy measurement unit 20, 20 (S15).

First, the first communication unit 63 may perform a specific request to the energy measurement unit 20, and the energy measurement unit 20 may include a response to a specific request.

For example, the first communication unit 63 may request the energy measurement unit 20 to have the SFDI held by the energy measurement unit 20. Then, the energy measuring unit 20 can transmit the own SFDI to the first communication unit 63.

The first communication unit 63 of the gate server 60 may transmit the security key stored in the memory 67 to the energy measurement unit 20 after confirming the SFDI reception of the energy measurement unit 20. [ The energy measuring unit 20 may determine whether the received security key is normal and finally transmit a registration completion response to the first communication unit 63 of the gate server 60. [ Then, the first communication unit 63 of the gate server 60 may be registered in the energy measurement unit 20 (S16).

In the above embodiment, the user inputs the security key in advance before performing the DNS-SD request. Alternatively, the security key may be input in the registration process according to the first registration method.

That is, after the first communication unit 63 of the gate server 60 receives the SFDI of the energy measurement unit 20 in the process of registering in the first registration scheme, the energy measurement unit 20, To request the transmission of the secret key. The energy measuring unit 20 or the server 30 of the power company may be connected to the first communication unit 63 of the gate server 60 or the energy measuring unit 20 ) ≪ / RTI > For example, information for inputting a security key may be displayed on the display unit 120 of the household appliance 10. When the user inputs the security key in the display unit 120, the registration can be completed. That is, after completion of inputting the security key in the display unit 120, the energy measurement unit 20 can transmit a request for confirming the completion of input to the energy measurement unit 20 through the gate server 60, To the first communication unit (63).

If the first communication unit 63 of the gate server 60 does not receive a response from the energy measurement unit 20 in step S14, the gate server 60 transmits the energy of the energy measurement unit 20 (S17).

The second registration method is a registration method when the energy measurement unit 20 does not have SFDI. The first communication unit 63 performs a DNS-SD request specifying "smartenergy" It is determined whether the DNS-SD response is received from the DNS server 20 (S18).

In the present specification, "smartenergy" can be used to search for an energy measurement unit 20 that can provide a smart grid function. Therefore, it can be understood that the first communication unit 63 of the gate server 60 performs the DNS-SD request by specifying the Smart Grid function.

When the energy measurement unit 20 can support the smart grid function, the energy measurement unit 20 can transmit a response to the first communication unit 63 of the gate server 60.

Then, the first communication unit 63 of the gate server 60 transmits its own SFDI to the energy measurement unit 20 for registration. The energy measuring unit 20 determines whether the SFDI is a protocol that can support the Smart Grid function or whether the user matches the SFDI registered in the server 30 of the power company in advance, The first communication unit 63 can transmit a registration completion response.

On the other hand, when the energy measurement unit 20 can not support the smart grid, the first communication unit 63 can not receive a response from the energy measurement unit 20. [ In this case, the first communication unit 63 may attempt to communicate with the external server (S19).

According to the present invention, the registration method may vary according to the policy of the utility company. In the case of the present invention, since the appliance can perform two registration methods irrespective of the policy of the utility company, .

Claims (14)

A gate server for receiving information about energy from an electric power company server or an energy measurement unit capable of communicating with the electric power company server; And
And an appliance for controlling a load based on information received from the gate server,
The gateway server performs a DNS-SD request specifying security information for registration, and in response to receiving a response to the DNS-SD request, The network system attempts to register.
The method according to claim 1,
The gateway server comprises:
A first communication unit for communicating with the power company server or the energy measurement unit; And
And a second communication unit for performing communication with the household appliance.
3. The method of claim 2,
The first communication unit performs Wi-fi communication to transmit and receive information with the power company server or the energy measurement unit,
And the second communication unit performs power line communication (PLC) to transmit and receive information with the household appliances.
The method according to claim 1,
Wherein the security information for the registration is a short-form device identifier (SFDI) stored in the gate server.
5. The method of claim 4,
When the gate server receives a response to a DNS-SD request specifying security information for registration, the gate server tries to register with the energy measurement unit in a first registration manner,
Wherein the gateway server tries to register with the energy measurement unit in a second registration mode when a response to the DNS-SD request specifying the security information for registration is not received.
6. The method of claim 5,
In the registration attempt by the first registration method,
The gate server requests SFDI information of the energy measurement unit to the energy measurement unit,
And receives the SFDI information from the energy measurement unit.
The method according to claim 6,
Wherein the gate server transmits the security key stored in the memory of the gate server to the energy measurement unit after receiving the SFDI information from the energy measurement unit and receives the registration completion response from the energy measurement unit.
The method according to claim 6,
Wherein the gate server transmits a security key transmission request to the energy measurement unit after receiving the SFDI information from the energy measurement unit and receives the security key from the energy measurement unit.
6. The method of claim 5,
In the registration attempt by the second registration method,
Wherein the gate server performs a DNS-SD request specifying a smart grid function.
10. The method of claim 9,
Wherein the gateway server transmits to the energy measurement unit the SFDI information of the smart grid function when receiving a response to the DNS-SD request specifying the smart grid function, and receives the registration completion response from the energy measurement unit, .
10. The method of claim 9,
Wherein the gate server attempts communication with an external server capable of communicating with a server of the power company when receiving a response to a DNS-SD request specifying a Smart Grid function.
The first communication unit of the gate server communicates with the energy measuring unit or the external server providing energy information;
Receiving energy information from the energy measurement unit or the external server to the gate server;
The second communication unit of the gate server communicates and transmits the received energy information to the appliance; And
And controlling the load on the appliance based on the received information.
13. The method of claim 12,
The first communication unit performs Wi-fi communication to transmit and receive information with the power company server or the energy measurement unit,
Wherein the second communication unit performs power line communication (PLC) to transmit and receive information with the household appliances.
13. The method of claim 12,
Further comprising the step of performing power line communication and transmitting the received energy information to another household appliance.

KR1020150044920A 2015-03-31 2015-03-31 Network system and method for obtaining information KR101695538B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070098172A (en) * 2006-03-31 2007-10-05 주식회사 대우일렉트로닉스 Home network system and method for control electronic device
KR20120137548A (en) * 2011-04-12 2012-12-24 엘지전자 주식회사 A network system
KR20130126736A (en) * 2011-03-03 2013-11-20 인터디지탈 패튼 홀딩스, 인크 Method and apparatus for accessing services affiliated with a discovered service provider

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070098172A (en) * 2006-03-31 2007-10-05 주식회사 대우일렉트로닉스 Home network system and method for control electronic device
KR20130126736A (en) * 2011-03-03 2013-11-20 인터디지탈 패튼 홀딩스, 인크 Method and apparatus for accessing services affiliated with a discovered service provider
KR20120137548A (en) * 2011-04-12 2012-12-24 엘지전자 주식회사 A network system

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