JP2005244753A - State change management system of household electric devices - Google Patents

State change management system of household electric devices Download PDF

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Publication number
JP2005244753A
JP2005244753A JP2004053761A JP2004053761A JP2005244753A JP 2005244753 A JP2005244753 A JP 2005244753A JP 2004053761 A JP2004053761 A JP 2004053761A JP 2004053761 A JP2004053761 A JP 2004053761A JP 2005244753 A JP2005244753 A JP 2005244753A
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home
home gateway
state change
home appliance
information server
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JP2004053761A
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JP2005244753A5 (en
Inventor
Hironori Kanda
博紀 神田
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Toshiba Consumer Marketing Corp
Toshiba Corp
Toshiba Kaden Seizo Kk
東芝コンシューママーケティング株式会社
東芝家電製造株式会社
株式会社東芝
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Application filed by Toshiba Consumer Marketing Corp, Toshiba Corp, Toshiba Kaden Seizo Kk, 東芝コンシューママーケティング株式会社, 東芝家電製造株式会社, 株式会社東芝 filed Critical Toshiba Consumer Marketing Corp
Priority to JP2004053761A priority Critical patent/JP2005244753A/en
Publication of JP2005244753A5 publication Critical patent/JP2005244753A5/ja
Publication of JP2005244753A publication Critical patent/JP2005244753A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a state change management system for home appliances capable of preventing a large load from being applied to a specific device while having a system configuration capable of autonomously managing the operation of the home appliance without requiring user operation. .
When a state changes, the home electric appliance 4 transmits operation history data indicating the state change content to the home gateway 11. When the home gateway 11 receives operation history data from the home appliance 4, the home gateway 11 additionally stores the operation history data in one history storage file 10. The home gateway 11 transmits the history storage file 10 to the information server 6 through the Internet 3 when the predetermined time comes. Thereby, since the information server 6 should just receive one log | history preservation | save file from each home gateway 11, the load of the information server 6 can be reduced.
[Selection] Figure 1

Description

  The present invention relates to a home appliance state change management system that manages a change in state of a home appliance that can be connected to a local network wirelessly or by wire.

  Conventionally, when confirming the safety of a resident in a remote location, it has been considered to obtain life information from home appliances owned by the resident through the Internet. It is necessary to provide a function that allows the product, and the development cost of home appliances is high and the product is expensive. In addition, a lot of life information is included in the information notified from the home appliance, and the burden is great for the home appliance having a limited amount of information that can be handled by one communication.

Therefore, in order to reduce the load on the home appliance, when a change in state occurs in the home appliance as in Patent Document 1, the notification information is directly transmitted to the information server on the Internet, thereby reducing the load on the home appliance. A system for obtaining life information via an information server has been proposed.
JP 2002-133556 A

  However, in the system as described above, when the number of information servers that the information server has to handle, such as household electrical appliances installed in homes nationwide, is further targeted for services that frequently change state, The total number of information notifications becomes enormous, and the load on the information server increases. For this reason. If an information server that satisfies such conditions is installed, an extremely high performance server is required.

  The present invention has been made in view of the above circumstances, and its purpose is a system configuration capable of autonomously managing the operation of home appliances without requiring user operation, but places a heavy load on specific devices. An object of the present invention is to provide a state change management system for household electrical appliances that can prevent this.

  The home appliance state change management system of the present invention is connected to a local network wirelessly or by wire, and when a state change occurs, a home appliance that notifies the state change is provided in the local network, and the home appliance is in a state When a change notification is received, new operation history data is added to a history storage file that summarizes necessary operation history data such as notification time and target device, and the history storage file is transmitted through a public network at a predetermined timing. When a home gateway is provided and a history storage file is received from the home gateway, an information server is provided that manages operation history data of the state change of the home appliance corresponding to the customer.

The said structure WHEREIN: You may make it the said predetermined timing be every fixed time (Claim 2).
The predetermined timing may be a timing of waiting for a random time calculated based on a unique number assigned to the home gateway from a predetermined time every predetermined time.

  In addition, after providing a client terminal that can access the information server, the home gateway transmits at least the latest operation history data when an acquisition request is received from the outside, and the information server receives the information from the client terminal. When the latest data is requested, the latest operation history data is acquired by requesting acquisition from the home gateway, and then the operation history data is transmitted to the client terminal. The operation history data acquired from the above may be displayed (claim 4).

Further, the home appliance has an abnormality flag for notifying the outside of an abnormality, and when an abnormal state occurs, the abnormality flag state change notification is performed by turning on the abnormality flag. When the abnormality flag state change notification is received, the abnormality flag of the home appliance may be turned off after executing the abnormality process.
Further, when the home gateway is activated, it may detect a home appliance connected to the local network and turn off the abnormality flag of the detected home appliance.

The home gateway may delete all the operation history data when notifying necessary information in response to a request from the information server.
In addition, when erasing the operation history data, the home gateway is executed in a state where access from the other program to the history storage file is prohibited, and when the other program is accessing, the home gateway erases the operation history data. The operation history data may be notified to the information server before (claim 8).

According to the first aspect of the present invention, since the data sent from the home gateway to the information server is a single history storage file in which operation history data is collected, the information server operates from each home appliance every time a state change occurs. Compared to the case where history data is received at different timings, the load for reception or subsequent processing can be greatly reduced.
According to the invention of claim 2, since the information server is accessed from the home gateway at regular intervals, access to the information server is restricted, and the load on the information server can be further reduced.

By the way, when each home gateway sends a history storage file to the information server at a predetermined time every predetermined time, the information server only needs to start a standby program at a predetermined time, but access to the information server is concentrated simultaneously. Increases the load.
Therefore, according to the invention of claim 3, the home gateway waits for a random time calculated based on the unique number assigned to itself from a predetermined time every predetermined time, and then accesses the information server. The timing of accessing the server is gradually shifted. As a result, the information server can reliably receive the history storage file from each home gateway.

According to the invention of claim 4, when the client terminal accesses the information server, the client terminal displays the latest operation history data acquired by the information server from the home gateway. Can be confirmed from a remote location.
According to the invention of claim 5, even if another abnormality occurs after the home appliance becomes abnormal and the abnormality flag is turned on, the abnormality flag is turned off by the home gateway that executed the abnormality processing. When the abnormality flag is turned ON, the next abnormality can be surely notified to the home gateway.

Here, when the home gateway is activated while the abnormality flag of the home appliance is ON, the home gateway cannot be dealt with, but according to the invention of claim 6, the home gateway is activated. Turns OFF the abnormality flag of the home appliance connected to the local network, so that the home appliance can reliably notify the abnormality.
According to the seventh aspect of the present invention, it is possible to reduce the load on the memory by deleting unnecessary operation history data.

  By the way, when the status notification of the home electric appliance is performed during the history erasure, the status notification may be erased without being notified to the information server. During erasure, the history storage file is prevented from being accessed by other programs, and the operation history data is written after the erasure is completed, so that it can be prevented from being erased. Further, when another program is accessing at the start of history erasure, there may be a case where the operation history data is being saved. If erasure is performed at the end of access in this way, the operation history data may be erased without being notified to the information server in this case, so the operation history data is notified to the information server before erasure. By doing so, it is possible to prevent missing of operation history data.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For example, as shown in FIG. 1, for example, a sub-network 2 that is a private network is built in a building 1, and the Internet 3 that is a public network is built outside the building 1.
The sub-network 2 is connected to home appliances 4 such as a refrigerator and a microwave oven, and includes a wireless network using, for example, Bluetooth (registered trademark) as a physical layer as a physical layer. The sub-network 2 is a home installed on the ceiling of a kitchen, for example, so as to perform control for connecting to the home appliance 5 and home terminal 5 connected via a wireless line and the information server 6 on the Internet 3. The home terminal 5 including the gateway 11 functions as a home server, communicates with each home appliance 4 through the home gateway 11, accesses the manufacturer's Web server through the home gateway 11 and the Internet 3, and transmits / receives mail. It is like that.

  The home appliance 4 is a so-called “network home appliance” that implements the TCP / IP protocol. The home gateway 11 assigns unique IP addresses (private IP addresses) that are unique to all the appliances connected to the sub-network to these home appliances 4. Each home appliance 4 is set with unique identification information (home appliance ID), and in this embodiment, a MAC (Media Access Control) address such as IEEE 1394 EUI 64 is set as the home appliance ID.

  The home gateway 11 converts a protocol (Ethernet (registered trademark), Bluetooth, ECHONET (network through a power line)) so that the home terminal 5 and each home appliance 4 can communicate with each other, and the Internet 3 and the subnetwork 2 As a router that connects the two. In this case, when it functions as a router, it also functions as a firewall that prevents illegal data input / output.

  The home gateway 11 has a DHCP (Dynamic Host Configuration Protocol) server function, and assigns a private IP address to each home appliance 4 connected to the sub-network 2. Further, the home gateway 11 has a function of accessing data collected from each home appliance 4 through the subnetwork 2 to the information server 6 on the Internet 3. In order to realize such a function, the home gateway 11 is equipped with the notification standby application 7, the stored information notification application 8, and the current information notification application 9 shown in FIG. 1, and the history referred to by these applications A save file 10 is provided.

On the other hand, a base station 13 is connected to the Internet 3 through a gateway 12 so that the information server 6 can be accessed through the Internet 3 from a client terminal 14 such as a mobile phone.
A TCP / IP packet used in the Internet 3 is composed of a header and a payload. The header stores the IP address of the destination device, the IP address of the source device, the port number of the destination, and the like. The payload stores predetermined data and the like.

  FIG. 2 is a functional block diagram showing the configuration of the home appliance 4. In FIG. 2, the home appliance 4 is a MPU (Micro Processing Unit) 15 main body, a state content storage unit 16 in which data is stored, a state change notification unit 17 that notifies a state change to the outside, and an external request. The content acquisition request response unit 18 that responds and a communication unit 20 that communicates with the outside through the wireless unit 19 are provided.

  FIG. 3 is a functional block diagram showing the configuration of the home gateway 11. In FIG. 3, the home gateway 11 is mainly composed of the MPU 21, and in addition to the application storage unit 22 in which each application (notification waiting application 7, stored information notification application 8, current information notification application 9) shown in FIG. 1 is stored. The home inside communication unit 23 that communicates with other devices through the subnetwork 2, the state change notification receiving unit 24 that receives the state change notification from the home appliance 4 through the home inside communication unit 23, and the state change notification receiving unit 24 The state change processing unit 25 that converts the received state change into storable data, and the history data storage unit 26 that stores the history storage file 10 (see FIG. 1) composed of the data processed by the state change processing unit 25. The history storage file 1 stored in the history data storage unit 26 The history data automatic notification control unit 27 for outputting the history data, the history data transmission unit 29 for transmitting the data output from the history data automatic notification control unit 27 to the information server 6 on the Internet 3 through the WAN side communication unit 28, and the information server 6 A request receiving unit 30 that receives a request from the history data, and a history data acquisition request response unit that outputs an operation history stored in the history data storage unit 26 to the history data transmitting unit 29 in response to an acquisition request received by the request receiving unit 30 31.

  Returning to FIG. 1, the information server 6 includes an information processing apparatus having an auxiliary storage device such as an MPU, a memory, and an HDD (Hard Disk Drive). The information server 6 provides services such as control of devices connected to the sub-network 2 or application service for the services in accordance with instructions from the home terminal 5, for example, data used for providing services, etc. It has a database that holds

  Further, the information server 6 has a function of an HTTP server that provides a service by using, for example, a Web browser functioning in the client terminal 14 as a front end. The database includes a customer database that holds information about individual users (customers). In this customer database, information (user name) for identifying individual users, information about the user (user information), home appliance IDs of all home appliances 4 owned by the user (home appliance IDs of owned home appliances), A correspondence table for associating information (type / model number) indicating the type and model number of the home appliance 4 and information (access: for example, IPv6 or IPv4) indicating the communication method to the home gateway 11 is stored.

The user information includes, for example, information indicating the user's address, name, age, occupation, telephone number, network connection service provider (provider), e-mail address, user's preferences, and the like.
The home appliance ID is registered in the information server 6 in association with the name of the user when the user purchases the home appliance 4. Specifically, for example, when the user purchases the home appliance 4, a form for filling in the address, name, etc. is provided from the store or the like, and the contents filled in by the user are sent via the network, for example, The information is input via a terminal device (not shown) connected to the information server 6, and the input information is supplied to the information server 6 by the terminal device. Alternatively, the user may register directly from the home terminal 5.

The information supplied to the information server 6 is registered in the customer database, and information such as home appliance ID indicating the home appliance 4 purchased by the user is associated with the user name and user information of the user, and the correspondence table in the customer database To be recorded. In this customer database, the home appliance ID and the like of the registered device are managed for each user name or for each user having at least part of the same user information such as the same user name and address. For each user who has the same user name, address, and other conditions, information about the home appliance 4 owned by the user is managed.
By configuring the customer database in this way, it is possible to search a list of home appliances 4 owned by the user using the user name or user information as a search key.

Next, the operation of the above configuration will be described.
(Startup operation of home gateway 11)
When the home gateway 11 is activated by turning on the power, it automatically activates all the applications 7 to 9. Thereby, after that, each application 7-9 comes to operate in parallel.
In order to reduce the load, the home gateway 11 does not start an application when the service is not registered.

(Start-up operation of home appliance 4)
FIG. 4 is a flowchart showing the operation of the home appliance 4 and shows only the part related to the present invention. In FIG. 4, when the user turns on the power of the home appliance 4, the power of the home appliance 4 is turned on and the connection with the home gateway 11 is executed (S 101). That is, the setting of the echo net of the home appliance 4 is initialized, for example, the echo net address is determined. Thereafter, the home appliance 4 broadcasts a startup notification in the subnetwork 2 and notifies other devices that it has started up.

The home gateway 11 has a DHCP server function, and when the home appliance 4 is notified by echonet, the private IP address of the subnetwork 2 is allocated to the home appliance 4. Thereby, the household appliances 4 are connected with the home gateway 11 by Bluetooth.
Here, the home gateway 11 registers the information of the activated home appliance 4 in the database. As the registration data, the MAC address and device name notified by the home appliance 4 are used, and the IP address assigned by the home gateway 11 is registered.
And the household appliances 4 connected with the home gateway 11 shift to a standby state, and monitor that the next event generate | occur | produces (S102).

(Initialization operation of notification standby application 7 (part 1))
FIG. 5 is a flowchart showing an initialization operation of the notification standby application 7 of the home gateway 11, and FIG. 6 is a diagram showing a data communication procedure by the operation. 5 and 6, the notification standby application 7 starts the communication unit 20 (S201), and then accesses an NTP (Network Time Protocol) server to acquire the current time (S202).

Subsequently, in order to construct a database of the home appliances 4 connected to the sub-network 2, the connected home appliances 4 are confirmed (S203). That is, an activation notification is transmitted in the sub-network 2 and the activated service-compatible home appliance 4 is confirmed from the response.
Here, the home appliance 4 has an abnormality flag that can be notified to the outside. When notifying the abnormality state to the outside, the home appliance 4 changes its own abnormality flag from OFF to ON, and notifies the abnormality flag state change notification. To do. The abnormality flag turned on in this way is turned off by the home gateway 2 after the home gateway 2 receives the abnormality notification as will be described later.

  By the way, for example, when a power failure occurs and the home appliance 4 or the home gateway 11 must be turned on again, after the home appliance 4 is turned on, an abnormality occurs in the home appliance 4 and then the home gateway 11 May be turned on. In this case, although the home appliance 4 notifies the home gateway 11 of an abnormality occurrence notification by turning on the abnormality flag, since the home gateway 11 is not powered on, there is no initialization request to return the abnormality flag to OFF. Not. For this reason, even if the home gateway 11 is subsequently turned on and activated, and the notification standby application 7 is activated, it becomes impossible to receive an abnormality notification from the home appliance 4 in which an abnormality has occurred.

Therefore, in this embodiment, when the home gateway 11 is activated by turning on the power, the home gateway 11 detects the activated home appliance 4 (S203: present), and sends an initialization request to all the detected home appliances 4. Issued (S204) so that the subsequent abnormality notification can be performed normally.
Subsequently, the notification waiting application 7 activates the state change notification unit 17 to receive the state change data from the home appliance 4 (S205), and then shifts to the standby state to generate the next event. Monitor (S206).

  Further, if the notification standby application 7 in FIG. 5 confirms the activated home appliance 4 and cannot find it (S203: NO), the notification standby application 7 shifts to a standby state (S207). It is determined whether the home appliance 4 is currently activated, and waits for a change in state (S208). This is because if the standby of the non-existing home appliance 4 is always performed, the old home appliance 4 that has not been used is also awaited, and the load increases.

  Then, the notification standby application 7 outputs an initialization request to the connected home appliance 4 when receiving a notification that the new home appliance 4 has been activated during standby (S208: Yes). At the same time (S209), after the state change notification receiving unit 24 is activated (S210), the state transitions to the standby state and the next event is monitored (S206).

(Initialization operation of home appliance 4)
When there is an external request during the standby shown in FIG. 4 (S107: YES), the home appliance 4 determines the request type (S108). In this case, since the request type is initialization (S108: initialization), state change (initialization) is executed (S110). That is, when the abnormality flag is ON, the error flag is turned OFF, and after the initialization process is responded to the home gateway 11, the state shifts to the standby state and the next event is monitored (S 106). .

(Initialization operation of notification standby application 7 (part 2)
In the home gateway 11 of the present embodiment, a plurality of home appliances 4 are monitored by the same notification standby application 7, so that an abnormality flag to be notified when the home appliance 4 is in an abnormal state is shared. That is, it is monitored that the common abnormality flag is turned on.
However, when two types of abnormality occur in the home appliance 4 continuously, even if the home appliance 4 attempts to turn on the abnormality notification flag in order to notify the second abnormality, it is already ON. Therefore, the second abnormality notification cannot be notified to the home gateway 11.
Therefore, the notification standby application 7 is configured to turn off the abnormality notification of the home electric appliance 4 when receiving the abnormality notification from the electric home appliance 4. As a result, the home appliance 4 can notify the home gateway of the next abnormality.

(State change notification operation of home appliance 4)
The home appliance 4 records its own state at any time, and when the state changes during standby as shown in FIG. 4 (S103: YES), the state content is saved (S104) and the state change occurs. Is notified through the sub-network 2 (S105), and then the state transitions to the standby state and the next event is monitored (S106). In this case, the same form of state change notification is used, and information corresponding to each home appliance 4 is used. In this case, the same notification form means that the home appliance 4 performs a state change notification with the same content to which a device name or a MAC address is added. This is because when the notification standby application 7 is started as a separate application for each model of the home appliance 4, a large load is applied to the home gateway 11, thereby eliminating the need for the home gateway 11 to obtain a distinction for each device. This is because the single standby application 7 realizes a standby state.

(Notification waiting application 7 state change reception operation)
FIG. 7 is a flowchart showing an operation when an event occurs while each application of the home gateway 11 is waiting, and FIG. 8 is a diagram showing a data communication procedure by the operation of the notification waiting application. 7 and 8, the notification standby application 7 is in a standby state (S301), and when receiving a notification of a state change from the home appliance 4 (S302: YES), the IP address or MAC included in the notification is received. What has changed by referring to its own database from the address, acquiring unique data such as the device name, and issuing an acquisition request for the current state to the home appliance 4 that has notified the type of state change notification (S303). For example, when the home appliance 4 is a refrigerator, when the notification of opening / closing of the refrigerator door is received, the serial number is inquired to the home appliance 4 that is the notification source.

(External request processing operation of home appliance 4)
When the home appliance 4 receives an external request during standby as shown in FIG. 4 (S107: YES), it determines the type of the external request (S108). In this case, since the external request is an acquisition request (S108: acquisition), the state content is notified to the sub-network 2 (S109), and then the standby state is entered (S106).

(History saving operation of notification standby application 7)
As shown in FIG. 7, when the notification waiting application 7 acquires the state contents (S304), the notification waiting application 7 processes the state contents into storable data and additionally stores them in one history storage file 10 (S305). ), And the occurrence of the next event is monitored after shifting to the standby state (S306). The history storage file 10 stores various state change histories of the home appliances 4 connected to the subnetwork 2, and is additionally stored every time a new notification is made. In the stored notification data, the notification time, model name, manufacturer name, unique address, serial number, and the like are stored as a set of data and stored in a form that can be used as history information.

  FIG. 9 shows an example of the history storage file 10. In FIG. 9, as data of the history storage file 10, time, device code, change location, change content, model name, serial number, and MAC address can be registered.

(Application initialization operation of the stored information notification application 8)
FIG. 10 is a diagram showing a data communication procedure between the stored information notification application 8 of the home gateway 11 and the information server 6. In FIG. 10, when the saved information notification application 8 is automatically activated in response to power-on, it executes an application initialization process to confirm service registration. That is, if the information server 6 is not registered as a service target, a service target request is issued to the information server 6. In this case, a user who purchases or uses the system may register the service start by accessing the information server 6 through the home gateway 11 from the home terminal 5 existing in the same subnetwork 2 as the home gateway 11. it can. At this time, when accessing from within the subnetwork 2 to which the home gateway 11 belongs, the service start can be registered by accessing the information server 6 after logging in to the home gateway 11.

(Status notification operation of the stored information notification application 8)
When the application initialization process is completed as described above, the saved information notification application 8 shifts to a standby state shown in FIG. 7 (S301). During this standby, the saved information notification application 8 executes a standby process (see FIG. 10).
By the way, every time the state of the home appliance 4 changes, if the information server 6 is notified of that, a heavy load is applied to the information server 6.

Therefore, when the predetermined time is reached (S307: YES), the storage information notification application 8 waits for a random or device-specific time (S308), and then stores the stored history storage file 10 using HTTP. It transmits to the server 6 (S309). Thereby, the load of the information server 6 can be reduced.
Here, the storage information notification application 8 has a unique notification waiting time. For example, if the time interval for notifying the history storage file 10 stored in the home gateway 11 is 6 hours a day, Four notifications will be sent from one household. This time interval is notified at a fixed time from the home gateways 11 of all the homes based on the current time acquired from the NTP server when the home gateway 11 is activated as described above.

  Thus, when transmitting from the time determined from the home gateway 11, the information server 6 knows which time zone includes the operation history data of the notification data from the home gateway 11 based on the notified time. Therefore, when the home appliance 4 is a refrigerator as shown in FIG. 11, it is not necessary to bother to confirm the notification time of the operation history data that is notified of the number of times the door of the refrigerator is opened and closed. .

  However, when an NTP server is used, access to the information server 6 is concentrated from each home at the same time, so the load on the information server 6 is expected to be extremely large. For this reason, when executing the standby process, the stored information notification application 8 provides a standby time unique to the home appliance 4 and waits for a predetermined standby time from the designated notification time, and then notifies the information server 6. That is, as shown in FIG. 10, after waiting for a certain period of time until the start of operation, the system waits for a more specific time. This standby time is created from a unique MAC address for each product and a unique number such as a manufacturing number, and is set to a random numerical value for each device. As a method for creating such a random numerical value, a part or all of the numerical value of the MAC address or the manufacturing number may be generated as an indefinite element by a random number generation function, or the ring counter is stopped at irregular timing. You may make it create by.

  In addition, the storage information notification application 8 deletes the transmitted history storage file 10 (S310) and shifts to a standby state in order to prevent a memory overflow due to an increase in the amount of notification data to the information server 6 (S310). The next event is monitored (S306). Here, if notification is made from the home appliance 4 when deleting the history storage file 10, there is a risk of double access to the notification data. The notification data is erased after confirming that there is no access. Conversely, if there is an access, the notification data is erased after the access is lost.

(Operation of information server 6)
The information server 6 stores the notification data received from the home gateway 11 by model, by open door (in the case of a refrigerator), by time, etc., and when there is a browsing request from the client terminal 14, Data is transmitted to the client terminal 14. As a result, as shown in FIG. 11, the number of times the refrigerator door is opened and closed is displayed on the client terminal 14 corresponding to the time zone, so that the user can confirm the state change of the home appliance 4 from a remote location.

(Operation of the current information notification application 9)
By the way, in order to reduce the load on the information server 6 as described above, when a system that temporarily saves the state change notification in the home gateway 11 and notifies the information server 6 every predetermined time is used, It is difficult to manage the state by the information server 6. This is because once the notification data is stored in the home gateway 11, the immediacy of information is lost.

Therefore, in this embodiment, in order to construct a system that does not lose the immediacy of information, the home gateway 11 stores not only the information server 6 but also a request from the information server 6 when it is requested. By transmitting the history information of the state change notification to the home gateway 11, the latest status information is set to the current status.
FIG. 12 is a diagram showing a data communication procedure of each device for realizing such an operation. In FIG. 12, when the user tries to acquire the state of the home electrical appliance 4 from outside the home by using the client terminal 14, the user accesses the information server 6 to make an acquisition request. In this case, since the history data for each predetermined time interval is stored in the information server 6, it is not possible to check how the target home appliance 4 was operating. For this reason, information such as the IP address and encryption key of the home gateway 11 of each household is stored in advance in the information server 6. When a current status acquisition request is made from the outside, the user name is stored in the database. The stored home gateway 11 of the user is searched, connected using the stored IP address and encryption key, and an acquisition request for the history storage file 10 stored in the home gateway 11 is made.

  The current information notification application 9 of the home gateway 11 is in the standby state shown in FIG. 7 (S301), and when there is a history information acquisition request (S311: YES), it is the same as the notification method of the stored information notification application 8 described above. Using the notification method, the history storage file 10 is transmitted (S312). Also in this case, in order to avoid duplication of data, the history storage file 10 is deleted after transmission (S313), and then the transition to the standby state is performed to monitor the occurrence of the next event (S306).

(Operation of information server 6)
The information server 6 can inform the client terminal 14 of the latest information by rewriting the information in the information server 6 after receiving the history storage file 10 as shown in FIG. The client terminal 14 can complete the information acquisition. Therefore, the user can confirm the latest state change of the home appliance 4 by the client terminal 14.

(History deletion operation of home gateway 11)
As described above, the home gateway 11 deletes the history in order to reduce the memory load after notifying the necessary information in response to the request from the information server 6.
By the way, when the status notification of the home appliance 4 is performed during the history deletion, the status notification may be deleted without being notified to the information server 6.

  Therefore, during the erasing of the operation history data, other programs cannot be accessed from the history storage file 10, and the operation history data is written after the erasure is completed. Further, when another program is accessing at the start of history erasure, there may be a case where the operation history data is being saved. If erasure is performed at the end of the access in this way, the operation history data may be erased without being notified to the information server 6 in this case as well. Is notified to prevent the operation history data from being lost.

  According to such an embodiment, when the home gateway 11 receives the state change notification from the home appliance 4, the home gateway 11 additionally stores the operation history data indicating the state change in one history storage file 10, and the history storage file 10 is transmitted to the information server 6 every predetermined time, so that the home gateway 11 differs from the conventional example in which data indicating the state change is transmitted to the information server every time there is a state change from the home appliance. The load of can be greatly reduced. Further, as a result of the constant time for accessing the information server 6 from the home gateway 11 as described above, the information server 6 only has to start the standby program only for the time accessed from the home gateway 11. Can reduce the load.

In addition, when transmitting the history storage file 10, the home gateway 11 waits for a random time calculated based on the unique number assigned to the home gateway 11 from a predetermined time. Access to the information server 6 is not concentrated, and the load on the information server 6 can be further reduced.
Further, since the user can check the latest operation history data stored in the home gateway 11 by accessing the information server 6 from the client terminal 14 such as a mobile phone, the home appliances in the house from a remote location 4 state changes can be monitored at a desired timing.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows.
The subnetwork 2 is not limited to a wireless network, and may be a wired network using a power line or the like as a communication path.
The home gateway 11 may be sent at regular intervals calculated from the time when the history storage file 10 is activated.
The information server 6 may set the transmission time of the history storage file 10 to the home gateway 11.

Schematic diagram of the entire system showing an embodiment of the present invention Functional block diagram showing home appliances Functional block diagram showing home gateway Flow chart showing operation of home appliance Flow chart showing operation of home gateway notification standby application The figure which shows the data communication procedure of the home appliance and the notification waiting application of the home gateway Flow chart showing standby operation of each application of home gateway FIG. 6 equivalent diagram showing different processing The figure which shows an example of the history preservation file The figure which shows the data communication procedure of the preservation | save information notification application of a home gateway, and an information server The figure which shows the data acquisition example of the client terminal Diagram showing the data communication procedure of each device

Explanation of symbols

  In the drawings, 2 is a sub-network (local network), 3 is the Internet (public network), 4 is a home appliance, 6 is an information server, 11 is a home gateway, and 14 is a client terminal.

Claims (8)

  1. Home appliances that are connected to the local network wirelessly or by wire, and that notify the status change in the local network when a status change occurs,
    When a notification of a state change is received from this home appliance, new operation history data is added to a history storage file that summarizes necessary operation history data such as notification time and target device, and the history storage file is added at a predetermined timing. A home gateway that transmits through a public network;
    A home appliance state change management system comprising an information server that manages the operation history data of the home appliance state change corresponding to the customer when a history storage file is received from the home gateway.
  2.   The home appliance state change management system according to claim 1, wherein the predetermined timing is every predetermined time.
  3.   The state change of the home electric appliance according to claim 2, wherein the predetermined timing is a timing of waiting for a random time calculated based on a unique number assigned to the home gateway from a predetermined time every predetermined time. Management system.
  4. Comprising a client terminal accessible to the information server;
    The home gateway sends at least the latest operation history data when an external acquisition request is made,
    When the latest data is requested from the client terminal, the information server acquires the latest operation history data by making an acquisition request to the home gateway, and then transmits the operation history data to the client terminal. ,
    The state change management system for home appliances according to any one of claims 1 to 3, wherein the client terminal displays operation history data acquired from the information server.
  5. The home appliance has an abnormality flag for notifying the outside of the abnormality, and when an abnormal state occurs, the abnormality flag state change notification is performed by turning on the abnormality flag,
    5. The home appliance according to claim 1, wherein when the home gateway receives an abnormality flag state change notification, the home gateway turns off the abnormality flag of the home appliance after executing the abnormality process. 6. Equipment state change management system.
  6.   6. The state change management system for home appliances according to claim 5, wherein when the home gateway is activated, the home gateway detects home appliances connected to a local network and turns off an abnormality flag of the detected home appliance.
  7.   7. The home appliance according to claim 1, wherein the home gateway deletes all operation history data when notifying necessary information in response to a request from the information server. State change management system.
  8. When erasing the operation history data, the home gateway is executed in a state in which access from the other program to the history storage file is prohibited. The state change management system for home electric appliances according to claim 7, wherein operation history data is notified to the information server.

JP2004053761A 2004-02-27 2004-02-27 State change management system of household electric devices Pending JP2005244753A (en)

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JP2008046934A (en) * 2006-08-17 2008-02-28 Toshiba Consumer Marketing Corp Household electrical appliance network system
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JP2017505084A (en) * 2014-11-21 2017-02-09 小米科技有限責任公司Xiaomi Inc. Task setting method, apparatus, program, and recording medium

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