KR100978332B1 - Network system - Google Patents

Abstract

In a network system in which a plurality of LANs and a center server are connected to a WAN, and a plurality of equipment and local servers each having an object assigned with an identifier to each LAN are connected, the local server is a local server within each LAN. Having a routing table in which the identifier information sent from the equipment is registered, and if there is a request to execute an object using the identifier from one of the equipment to the other of the equipment, it is checked whether the identifier is registered in the routing table. If it is registered, the request to execute the object is sent to the corresponding equipment, and if not, the request to execute the object is sent to the center server. The center server searches for a local server of another LAN that has a corresponding relationship with the identifier, and transmits an execution request of the object.

Description

Network system {NETWORK SYSTEM}

The present invention relates to a network system capable of making a service request such as remote control or remote monitoring between devices connected to a network.

Background Art Conventionally, a system for communicating from a terminal device connected to an IPv6 (Internet Protocol Version 6) network to a device connected to a non-IP network has been proposed.

For example, Japanese Laid-Open Patent Publication No. 2003-60664 discloses a terminal device such as a personal computer (PC) 140 or a mobile phone 150 connected to the Internet 4, as shown in FIG. The network system which makes IP device 100 accessible to non-IP device 110, such as a refrigerator, an air conditioner, a microwave oven, etc. in a house via the gateway 120 is described. The gateway 120 is connected to a non-IP device 110 and a non-IP network such as an ECHONET. In addition, the gateway 120 is connected to the IPv6 router 130 via the IPv6 network, and the IPv6 router 130 is connected to the Internet 4. In addition, the gateway 120 is connected to the IP device 100 in a house such as a PC through an IPv6 network.

The gateway 120 includes a CPU that executes various programs related to control, data processing, and communication of peripheral units; A storage unit for holding a translation table for associating an identifier (local address) on the network of the non-IP device in the non-IP network with an IPv6 address assigned to the non-IP device; A non-IP communication control unit for performing communication control via ECHONET; And an IP communication control unit that performs communication control using IPv6. According to this network system, the non-IP device 110 at the gateway 120 receives a packet for receiving the non-IP device 110 from the PC 140 or the cellular phone 150 connected to the Internet 4. It is converted into a protocol of a network to which it is connected and transmitted to the non-IP device 110.

However, in the above system, although the non-IP device is used, the terminal of the IPv6 network transmits a packet having a header including the IPv6 address of the sender, so that the gateway 120 attempts to allocate the IPv6 address to the non-IP device. Even when accessing a plurality of devices from a terminal, it is necessary to generate an IPv6 address corresponding to each device. In other words, even if a device that performs the same operation is added to the network, the corresponding IPv6 address needs to be set individually, so that a plurality of devices cannot be controlled or monitored using one identifier. In addition, there is a problem in that a plurality of identifiers cannot be assigned to one device, and it is not possible to flexibly cope with an increase in facility equipment that provides a service.

Therefore, there is still room for improvement from the viewpoint of constructing a flexible network system that can efficiently perform remote control and remote monitoring of various various equipments.

Accordingly, the present invention has been made in view of the foregoing, and its object is to recognize a connection identifier (network ID) such as an IP address used for network communication of a device connected to a local area network (LAN). A host server that is capable of controlling or monitoring a device and having a low resource routing operation is disposed on a LAN, so that processing of an upper server arranged in a wide area network (WAN) is possible. It is providing the network system which reduced the load.

That is, the network system of the present invention has at least one LAN and a center server connected to the WAN, each of which is provided with a function unit for executing a predetermined object, and the identifier and network assigned to the object. A network system in which a plurality of equipments having a connection identifier for communication and a local server are connected, wherein one of the equipments can make an execution request of an object by using the identifier with respect to another of the equipments.

Each of the facility devices transmits the identifier and the connection identifier to the local server in response to a request from the local server, and requests the local server to provide an identifier assigned to an object of another facility device. ; A storage unit for storing an identifier of another facility apparatus provided from the local server in response to a request of the information processing unit; And an execution request unit for transmitting an execution request of another object of the facility apparatus to the local server using an identifier stored in the storage unit.

The local server includes a local storage unit for storing a first routing table; A registration unit that registers the identifier and the connection identifier transmitted from the information processing unit of the facility apparatus in the first routing table; And a check unit for determining whether the identifier is registered in the first routing table when there is a request to execute an object using an identifier from one of the equipment to the other of the equipment,

When registered in the first routing table, the local server makes a request to execute the object with respect to another one of the equipments, and when not registered in the first routing table, the local server is configured as an object. And transmits an execution request to the center server.

As described above, in the network system of the present invention, one of the equipments can make an object execution request using an identifier to the other of the equipments, and from one terminal equipment connected to the LAN to one of the equipments. It is also possible to make an execution request of an object using an identifier.

That is, this network system has one or more LANs and a center server connected to the WAN, each having a function unit for executing a predetermined object in the LAN, and having a plurality of identifiers attached to the objects and connection identifiers for network communication. A network system in which an equipment, a terminal apparatus, and a local server of the apparatus are connected, and either one of the equipment or one of the terminal equipment can make an execution request of an object using an identifier for the other of the equipment.

Each of the equipment includes: an information processing unit which transmits an identifier and a connection identifier to the local server according to a request from the local server, and requests the local server to provide an identifier assigned to an object of another equipment; A storage unit that stores identifiers of other equipment provided from the local server in response to a request of the information processing unit; And an execution request unit for transmitting an execution request of another object of the equipment to the local server using the identifier stored in the storage unit.

The terminal apparatus includes an information processing unit which requests a local server to provide an identifier assigned to an object of the equipment; A memory for storing an identifier of the facility equipment provided from the local server in response to a request of the information processing unit; And an execution request unit for transmitting an execution request of one object of the equipment to the local server using the identifier stored in the storage unit.

The local server includes a local storage unit which stores a first routing table; A registration unit that registers the identifier and the connection identifier transmitted from the information processing unit of the equipment to the first routing table; And if there is a request for execution of an object using the identifier from one of the equipment or the terminal equipment to the other of the equipment, the controller checks whether or not the identifier is registered in the first routing table.

If it is registered in the first routing table, the local server makes an execution request of the object to the other of the equipment, and if it is not registered in the first routing table, the local server requests the execution of the object from the center server. Characterized in that to transmit.

According to the network system of the present invention, since the routing to the equipment connected to the LAN is performed by a local server on the LAN, a center server disposed in the WAN is connected to the routing to the equipment in the LAN. It is not necessary to maintain the configuration, and the processing load of the center server can be reduced. On the other hand, when an equipment in a LAN makes an object execution request to an equipment under the control of another LAN, the object server's execution request is transmitted to the center server by the matching unit of the local server. can do.

In the network system, if the registration of the identifier used for the execution request of the object is not in the first routing table, after the local server transmits the execution request of the object to the center server, the center server requests the execution request as follows. It is preferable to process.

That is, a plurality of LANs are connected to the WAN, and in each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table,

The center server includes a center storage unit for storing a second routing table; A center registration unit that registers the identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And when the execution request of the object using the identifier is transmitted from the local server connected to one of the plurality of LANs to the center server, the local server corresponding to the identifier used in the execution request of the object is determined from the second routing table. It is preferable to have a server retrieval unit for retrieving and sending a request to execute the object. The local server to which the execution request of the object has been transmitted by the server retrieval unit is determined by matching the identifier used in the execution request of the object with the registration contents of the first routing table of the local server. It is more preferable to transmit the execution request of the object.

In this way, when an execution request is made to a facility other than the LAN from a facility device or a terminal device in the LAN, an object execution request is transmitted to the center server. Can be.

Moreover, as an embodiment of the network system of the present invention, a plurality of LANs are connected to the WAN, and in each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table,

When the local server receives an identifier of the other equipment from one of the equipment or the terminal apparatus, if the identifier is registered in the first routing table, one of the equipment or the terminal apparatus is provided. If the identifier is provided to any one of the identifiers, and the identifier is not registered in the first routing table, the request of the identifier is transmitted to the center server.

The center server includes a center storage unit for storing a second routing table; A center registration unit that registers an identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And when the request for the identifier is transmitted from the local server to the center server, an identifier search unit for retrieving an identifier corresponding to the request from the second routing table and transmitting it to the local server.

In this case, for the identifier not registered in the first routing table of the local server, the request of the identifier is transmitted to the center server, and the corresponding identifier information is retrieved from the second routing table. We can plan more.

Further, as another embodiment of the above-described network system, in each of the plurality of LANs, the local storage of the local server is in accordance with the identifier information of other facility equipment required from each facility equipment under the control of the local server. And an identifier information table in which identifier information required as the entire LAN to which the local server is connected is set.

Each of the local servers provides the contents of the identifier information table to the center server as filter information, and the center server stores the filter information in a second routing table, and the new identifier information in the second routing table. When is registered, it is preferable to have an identifier distribution unit for determining a local server requiring the new identifier information according to filter information and distributing the new identifier information to the determined local server. As described above, when the network system includes a terminal device connected to a LAN and capable of making an object execution request using an identifier in one of the equipments, the control of the local server is controlled in the identifier information table. According to the identifier information of each of the equipments under the equipment and the equipments required from the terminal device, identifier information required by the entire LAN to which the local server is connected is set.

In this case, if a new identifier is registered, only the local server determined according to the filter information is notified of the new identifier. Therefore, the amount of unnecessary communication between the servers is reduced compared to the case where the center server notifies the new identifier to all local servers. As a result, a more efficient network system can be realized.

In addition, from the viewpoint of further improving the efficiency of the network system of the present invention, the local server uses the identifier of the other equipment that each equipment equipment in the LAN requires to execute an object execution request as the filter information. Register in correspondence with the connection identifier of the equipment in the first routing table,

When new identifier information is registered in the second routing table of the center server, the center server notifies the local server of the new identifier information, and the local server needs the new identifier information notified from the center server. It is preferable to have an identifier distribution part which determines equipment equipment from among the equipment under the control of the said local server according to filter information, and distributes new identifier information only to the determined equipment.

As described above, when the network system includes a terminal device connected to a LAN and capable of requesting execution of an object using an identifier in one of the equipments, the local server is configured to each equipment in the LAN. And register, as filter information, an identifier that the terminal device needs to make an object execution request in association with the connection identifier of the equipment in the first routing table. In addition, the identifier distribution unit of the local server determines the equipment and / or the terminal device requiring the new identifier information notified from the center server among the equipment and the terminal device under the control of the local server according to the filter information. Distribute new identifier information to facility equipment and / or terminal equipment.

In this case, if there is a registration of a new identifier, the new identifier is notified only to the equipment and / or the terminal apparatus determined according to the filter information. As compared with the case, it is possible to prevent unnecessary identifier information from being stored in the equipment and the terminal apparatus, and to reduce the amount of communication from the local server to the equipment, thereby realizing a network system with high efficiency.

In the network system of the present invention, it is particularly preferable that the center server and the local server each have the identifier distribution unit described above. That is, in each of the plurality of LANs, the local storage section of the local server is required as the entire LAN to which the local server is connected according to the identifier information of other facility equipment required from each facility device under the control of the local server. Has an identifier information table in which identifier information is set,

Each of the local servers provides the contents of the identifier information table to the center server as first filter information, and at the same time, identifies the identifiers of other equipments required by each equipment in the LAN to execute the object execution request. Register as the second filter information in correspondence with the connection identifier of the equipment in the first routing table,

When the center server stores the first filter information in a second routing table and new identifier information is registered in the second routing table, the center server determines a local server that requires the new identifier information according to the first filter information. And a first identifier distributor configured to distribute new identifier information to the determined local server.

The local server determines, from the equipment under the control of the local server, equipment equipment that requires the identifier information distributed from the first identifier distribution unit, based on the second filter information. Has a second identifier distributor.

As described above, when the network system includes a terminal device connected to a LAN and capable of requesting execution of an object by using an identifier in one of the equipments, the identifier information table of the local storage unit, According to the identifier information of each of the equipment under control of the local server and other equipment required by the terminal device, identifier information required as the entire LAN to which the local server is connected is set, and in the first routing table of the local server, The identifiers of other equipments required for each equipment and terminal device in the LAN to make an object execution request are registered in correspondence with the connection identifiers of the equipments as the second filter information. In addition, the second identifier distribution unit of the local server selects the equipment and / or the terminal device that requires the identifier information distributed from the first identifier distribution unit from among the equipment and terminal device under the control of the local server according to the second filter information. Determine and distribute identifier information to the determined equipment and / or terminal device.

In this case, if there is a registration of the new identifier, the first identifier distributor notifies the new identifier only to the local server determined according to the first filter information, and in the local server notified of the new identifier, the second identifier distributor Since the new identifier is notified only to the equipment and / or the terminal apparatus determined according to the second filter information, the amount of communication between the center server and the local server and between the local server and the equipment and the terminal apparatus can be reduced. Unnecessary identifier information can be prevented from being stored in the local server or the equipment, and as a result, the network system can be further improved.

The novel features of the present invention and the effects thereof will be clearly understood from the embodiments described below.

1 is a schematic diagram of a network system according to a preferred embodiment of the present invention.

FIG. 2 is a configuration diagram of a local server used in the network system of FIG. 1.

3 is a configuration diagram of equipment used in the network system of FIG. 1.

4 is a flowchart showing an initial setting operation when the equipment is connected to a LAN in the network system of FIG.

Fig. 5 is a flowchart showing the operation when one of the equipments makes an object execution request to another equipment in the network system of the present invention.

6 is a schematic diagram showing another example of the network system of the present embodiment.

FIG. 7A is a diagram illustrating an example of a routing table included in the center server of FIG. 6, and FIGS. 6B are diagrams illustrating an example of a routing table included in each local server of FIG. 6.

8 is a flowchart showing another example of the initial setting operation when the equipment is connected to the LAN in the network system of the present invention.

9 is a diagram illustrating an example of filter information set in a local server.

Fig. 10 is a flowchart showing the operation when a new facility device is registered in the center server in the network system of the present invention.

Fig. 11 is a flowchart showing another example of the initial setting operation when the equipment is connected to the LAN in the network system of the present invention.

FIG. 12A is a diagram showing an example of an identifier information table of the local server, and FIG. 12B is a diagram showing an example of filter information set in the center server.

Fig. 13 is a flowchart showing another example of the operation when a new equipment is registered in the center server in the network system of the present invention.

Fig. 14 is a flowchart showing another example of the initial setting operation when the equipment is connected to the LAN in the network system of the present invention.

Fig. 15 is a flowchart showing another example of the operation when a new equipment is registered in the center server in the network system of the present invention.

16 is a schematic diagram showing an application example of the network system of the present invention.

17 is a schematic diagram of a conventional network system.

Hereinafter, the network system of the present invention will be described in detail according to a preferred embodiment.

As shown in Fig. 1, the network system of the present embodiment has a plurality of local area networks (LANs) 1 and a center server 5 connected to a wide area network (WAN) such as the Internet 4. The LAN 1 includes a plurality of equipments 2 each having a function unit 20 for executing a predetermined object, each having an identifier assigned to the object and a connection identifier for network communication; Terminal equipment 6 such as a PC; And the local server 3 are connected, and the execution request of the object can be made from the one of the equipment 2 or the terminal apparatus 6 by using the identifier to the other of the equipment.

Each LAN 1 is constructed in accordance with a communication standard such as Ethernet (registered trademark). The local server 3 connected to the LAN serves as a gateway for connecting the Internet 4 and the LAN 1, and as shown in FIG. 2, the OAS function unit 30, the hub unit 31, and the hub. A communication unit 32 connected to the LAN 1 via the unit 31, a modem unit 33 for connecting to the Internet 4, and a storage unit 34 are provided. 1) The information exchange is performed between the equipment 2 on the device and the information is transmitted by TCP / IP based communication with the center server 5 arranged on the Internet 4 by the modem unit 33. It is supposed to exchange. The global IP address is set on the Internet 4 side, and the local IP address is set on the LAN side.

The OAS function unit 30 includes software for realizing a function as an object router for concealing a network connection method of the equipment 2; Application software for transmitting or receiving information defined for the equipment 2 by accessing an interface provided by the object of each equipment 2; In addition, a protocol bridge service for converting heterogeneous protocols to seamlessly connect to the network system of the present embodiment, or a protocol used for communication between the center server 5 and the SOAP (Simple Object Access Protocol). It is composed of software that realizes additional service functions such as firewall, bridge service, etc. to convert through the firewall.

As shown in FIG. 3, the equipment 2 connected to the local server includes a communication unit 20 corresponding to Ethernet (registered trademark); A function unit 21 for executing a predetermined object in accordance with the execution request of the above-described object and exchanging information defined in the interface; An information processing unit 22 which performs necessary information processing and control processing as the equipment 2; And a storage unit 23 for storing identifier information. That is, the information processing unit 22, along with the function of transmitting the identifier and the connection identifier to the local server in response to a request from the local server 3, is an identifier assigned to the object of the other equipment used for the execution request of the object. It has the function of requesting the local server 3 to provide. The storage unit 23 stores identifier information of the other equipment 2 provided from the local server in response to a request of the information processing unit. The execution request of the object to the other equipment 2 using the identifier stored in the storage unit 23 is generated by the information processing unit 22 and transmitted to the local server 3 via the communication unit 20. In the present embodiment, the execution request unit of the object of the equipment 2 is constituted by the information processing unit 23 and the communication unit 20, but the execution request unit may be separately installed in the equipment 2.

In addition, the equipment 2 described above has one or more equipment-side objects which are used when the functional unit 21 performs a process for providing a service under the module unit M0S embedded in the information processing unit 22. Have Each of the equipment-side objects includes a unique identifier (object identifier: OID) that provides information about the equipment on which the object should be executed, and the contents of an object executed in the equipment (for example, the equipment 2). Interface identifiers (IIDs) defined by variables representing the current state, functions for controlling the equipment 2, event information indicating the occurrence of changes in the equipment 2 state, functions executed by the equipment 2, and the like. ) One or more. Therefore, the unique identifier (OID) is unique to the object, and the interface identifier (IID) may be assigned to an interface having the same definition. The object is executed when the information processing unit 22 receives the execution request using the unique identifier (OID) or the interface identifier (IID) or a combination thereof from the OAS function unit 30 in the local server 3. . Specifically, in the case of an execution request corresponding to a specific interface under a specific equipment-side object, a combination of OID and IID is used, and when the interface having the same definition content is under the object of the plurality of equipment 2, the interface. An execution request can also be made with only the IID. In this embodiment, the identifier information serving as the object identifier and / or the interface identifier is called binding information to distinguish it from connection identifier information such as an IP address.

However, as described above, the object identifier is basically a unique identifier as information about each equipment to execute the object, but, for example, in the case of using the lighting control device for controlling a plurality of lighting equipment as the equipment The equipment may be set to have different object identifiers as many as the number of lighting fixtures. In addition, in the case of constituting an object from a plurality of different equipments, a plurality of equipments may have one object identifier as a whole, and each equipment may be set to have a different interface identifier according to its function. have. For example, in the case where the TV and the video device constitute one TV video system as a whole, by assigning one and the same object identifier to the TV and the video device, the TV and the video device are regarded as the same object, respectively. It becomes possible. On the other hand, since the TV and the video device each provide different functions, different interface identifiers are assigned. As described above, in setting the special equipment, a plurality of equipment may be requested to execute an object using identifier information formed by a combination of the same object identifier and another interface identifier.

An object of the module unit (MOS) included in the information processing unit 22 of each facility device 2 includes: an application unit for the facility device 2; A software communication module corresponding to the OSI 7 layer model; And a hardware communication module for exchanging information with the functional unit 21. The software communication module is responsible for the protocols in the network layer to the presentation layer of the OSI 7 layer, and defines the OAP, and integrates TCP and UDP as described later.

The center server 5 installed on the WAN has the same function as the communication unit (not shown) for exchanging information via the Internet 4 and the OAS function unit 30 of the local server 3. It is comprised by the computer system provided with the OAS function part 50. FIG.

The terminal device 6 for a client connected to the local server 3 is constituted of, for example, a PC, and serves as an information processing unit that requests the local server to provide an identifier assigned to an object of the equipment 2. A function to function as a storage unit for storing an identifier of a facility equipment provided from a local server in accordance with a function, a request of the information processing unit, and an execution request of an object of another facility device to the local server using the identifier stored in the storage unit. It has at least a function as an execution request unit. In the terminal device used in the present embodiment, an execution request can be made to an object mounted in the equipment 2 by using an identifier, and information corresponding to the execution request is transmitted to the equipment 2; Alternatively, application software for receiving the service of the equipment 2 by receiving it from the equipment 2 is mounted.

As described above, the protocol used in the network system of the present embodiment is an OSI seven-layer model, and the other equipments ( 2) (or the terminal device 6 for the client) to configure the application layer with a proprietary protocol (OAP) for transmitting variables, event information, or receiving functions, and using this OAP Information exchange is performed between the OAS function unit 30 of the server 3 or the OAS function unit 50 of the center server 5 and the module unit MOS of the equipment 2.

In the local server 3 used to build the network system of the present invention described above, the storage unit 34 holds a routing table, and is an identifier transmitted from the information processing unit 22 of the equipment 2. And connection identifier are registered in this routing table. When an execution request of an object using an identifier from one of the equipment 2 or the terminal equipment 6 to the other equipment is sent to the local server, it is checked whether the identifier is registered in the routing table. do. In this embodiment, the OAS functional unit of the local server executes a predetermined program, thereby realizing the function as a registration unit for registering identifier information in the routing table and the function as a matching unit for checking whether or not the identifier is registered in the routing table. However, you may employ | adopt the structure which installs a registration part and a matching part separately from the OAS function part 30. FIG.

When registered in the routing table by matching identifiers, the local server 3 makes a request for execution of the object to the corresponding other equipment, and when not registered in the routing table, the local server 3 The execution request of the object is transmitted to the center server 5.

When the execution request of the object from the local server 3 is transmitted to the center server 5, the local server 3 corresponding to the identifier used for the execution request of the object is retrieved from the routing table of the center server 5, and The execution request of the object is transmitted to the corresponding local server 3. Here, the routing table used to search for a local server having a correspondence relationship with the identifier used for the execution request is held in a storage unit (not shown) of the center server 5, and is notified from each local server 3. The identifier to be registered is registered in association with the connection identifier of the local server. In the present embodiment, the OAS function unit 50 of the center server 5 executes a predetermined program, whereby the function as a registration unit that registers the identifier information in the routing table in association with the connection identifier of the local server, And a function as a server search unit for searching for a local server from the routing table, a configuration may be adopted in which a register unit and a server search unit are provided separately from the OAS function unit 50.

The local server 3 receiving the request to execute the object from the center server 5 executes the object to the equipment which is determined by matching the registration contents of the routing table of the local server with the identifier used for the execution request of the object. Send the request. As a result, the functional unit 21 of the equipment having received the request for executing the object executes an operation corresponding to the object.

Next, the operation of the network system of the present invention will be described with more specific examples. 4 shows an example of the initial operation in the case where the equipment 2 is connected to the local server 3 of the network system of the present invention.

First, in a state S1 in which a connection is established between a local server 3 on a LAN and a center server 5 arranged on the Internet 4 to which the LAN is connected, on the LAN, The equipment 2 is connected. At this time, the information processing part 22 of the equipment 2 forms a connection (connection) with respect to the local server 3 on LAN as an initial operation currently programmed (S2). Then, information exchange of necessary setting items (environmental setting, configuration) is performed between the local server 3 and the equipment 2 (S3).

Thereafter, the OAS function unit 30 of the local server 3 transmits a request command to the equipment 2 to transmit the binding information of the object of the equipment 2 (S4). The information processing part 22 of the equipment 2 which received this request command transmits the binding information of the object of the module part MOS to the OAS function part 30 of the local server 3 (S5).

The OAS function unit 30 having received this binding information performs a process of registering binding information in association with the local IP address which is the connection identifier of the equipment 2 in the routing table stored in the storage unit 34. (S6). After this registration process, the local server 3 transmits the binding information of the registered said equipment 2 to the center server 5 (S7). The OAS function unit 50 of the center server 5 newly registers the binding information transmitted from the local server 3 to the routing table in the storage unit (not shown) (S8).

On the other hand, the information processing unit 22 of the equipment 2 receives the OAS function unit 30 of the local server 3 as a destination for a request for binding information used to execute an object with respect to the other equipment 2. To transmit (S9). Receiving this request, the OAS function unit 30 checks whether the binding information of the other equipment 2 which is the information request object is registered in the routing table of the storage unit 34 (S10).

Here, although the information processing part 22 of the equipment 2 may request binding information of all the equipment 2 connected to the LAN which the local server 3 has jurisdiction, in practice, execution of an object is not carried out. A program necessary for making a request for binding information is stored in the equipment on the requesting side. That is, when a certain equipment 2 is connected to a network (here, a LAN), information about which equipment equipment needs binding information of which equipment as the object execution request destination is preprogrammed. will be. For example, when the equipment 2 on the side requesting the execution of an object is a human body sensing sensor, crime prevention of notifying a resident of a person by blinking the lighting of a house (in a LAN) in accordance with the output of the human body sensing sensor. You can build a system. In this case, the human body sensor, which is a facility equipment, is pre-programmed so as to request binding information for all the lighting fixtures of the house to the local server 3 which has jurisdiction over it when connected to the LAN. Specifically, if the binding information is arbitrarily requested for the object identifier (OID) given to each equipment by using the interface identifier (IID) defined by the content of the object "flashing of a lighting device", the request is made. The received local server 3 transmits the binding information of all the equipments having the IID of "flashing of the lighting apparatus" among the equipments in the local jurisdiction to the equipment (the human body sensor) of the request source. Moreover, as the equipment which requires all the binding information of the equipment in the LAN which the local server 3 has jurisdiction, there exists an apparatus for centrally managing each equipment, such as a control panel and a PC. The program embedded in each of the equipments can be started with a trigger of establishing a connection between the local server and the equipment or establishing an environment setting.

In S10, when the binding information of the other equipment 2 is registered in the routing table, the binding information is read from the routing table and transmitted to the equipment 2 of the information requesting source (S11). The information processing unit 22 of the equipment 2 performs a process of storing the binding information transmitted in the storage unit 23 (S12). On the other hand, when the binding information of the other equipment 2 is not registered in the routing table, the OAS function unit 30 of the local server 3 requests the information registered in the routing table of the center server 5. A request command is transmitted to the center server 5 so as to transmit binding information of the target equipment 2 (S13). The OAS function unit 50 of the center server 5 reads the corresponding binding information from the routing table in response to this request command and transmits it to the local server 3 (S14). The OAS function unit 30 of the local server 3 performs a process of transmitting the transmitted binding information to the corresponding equipment 2 in the same manner as in S11 and S12 described above, and stores the storage 23 of the equipment. The binding information is stored.

By this initial operation, the equipment 2 can acquire the binding information of the other equipment 2 set as the target of the execution request in advance through the local server 3, and become the target of the execution request. The execution request of the object using the binding information (at least one of an object identifier and an interface identifier) becomes possible, without having to know the IP address on the network of the equipment 2.

In addition, in the processing of the above-mentioned initial operation, for example, when the binding information of the other equipment 2 is requested from the equipment 2 to the local server 3, the equipment is applied to the local server 3. The binding information of the device 2 is registered in the routing table of the local server 3, and all the binding information registered in the routing table is transmitted to the facility device 2, and the facility device 2 side needs it. The binding information may be selected and stored.

Next, in the network system constructed as described above, an object is used by using an identifier from one of the equipments 2 (here, called equipment A) to another equipment (here called equipment B). The operation in the case of executing the execution request of will be described with reference to FIG. The same applies to the case where an object is executed from the terminal device 6 to the facility device B.

After the above-described initial operation is finished, when the command (information) of the execution request of the object using the binding information from the equipment A to the equipment B is transmitted to the local server 3 as a destination (S20), the local server The OAS function unit 30 (3) compares the registration information of the routing table of the storage unit 34 with the binding information that is the target of the execution request, and whether there is a thing corresponding to the object loaded by the controlling equipment under control. (S21).

Here, when the binding information of the equipment B used in the execution request is registered in the routing table, the OAS function unit 30 of the local server 3 uses the local IP address of the equipment B as a destination to execute the request. The command is transmitted (S22). On the other hand, when the binding information is not registered in the routing table, the OAS function unit 30 of the local server 3 transmits a command for execution request to the center server 5 (S23).

The OAS function unit 50 of the center server 5, when a command for execution request is transmitted from the local server 3, the local server 3 to which the equipment having the binding information used for the execution request is connected. Is retrieved from the routing table held by the center server (S24), and the command of execution request is transmitted to the corresponding local server 3 (S25). Then, the local server 3 which received the command of execution request transmits the command of execution request using the local IP address of the equipment B as a destination (S26). In this way, the execution request of the object becomes possible even between the facility apparatuses 2 connected to different LANs.

In this embodiment, the OAS function unit 50 of the center server 5 executes a predetermined program, whereby the binding information transmitted from the local server 3 is stored in the center server storage unit (not shown). Functions as a register to register (S8) in the center routing table, and as an identifier searcher to retrieve (S13) the identifier from the routing table held by the center server according to the request of the identifier transmitted to the center server. However, a configuration may be adopted in which the registration unit and the identifier retrieval unit are provided separately from the OAS function unit 50.

In this network system, when new binding information is registered in the routing table managed by the OAS function unit 50 of the center server 5, the OAS function unit 50 sends this new binding information to each local server. Notify (3). The OAS function unit 30 of each local server 3 transmits the new binding information notified from the center server 5 to all the facility equipment 2 under control. Incidentally, the steps up to the registration of the new binding information in the center server are also performed in the same manner as in the above steps S2 to S8, and thus redundant description is omitted here.

As described above, according to the network system of the present embodiment, since the OAS function unit 30 of the local server 3 only needs to manage the binding information for the routing of the equipment 2 in the local jurisdiction, the routing process is performed by the author. I can do it. In addition, in the OAS function unit 50 of the center server 5, routing in which the object information of the equipment 2 connected to each local server 3 and the IP address of the corresponding local server 3 are associated with each other. It is sufficient to create a table, and since it is not necessary to maintain sessions of all the equipments 2, the processing load on the center server 5 can be reduced.

The operation of the network system of the present invention will be described in more detail according to the specific example of FIG. 6. In FIG. 6, the equipment A and the equipment B are connected to the local server of LAN-1, and the equipment C and the equipment D are connected to the local server of LAN-2. Each local server 3 is connected to the center server 5 via the Internet 4. 6, together with the binding information which each facility apparatus 2 has, between the center server 5 and the Internet 4, between the local server 3 and the Internet 4, and the local server 3, Each connection information between each equipment 2 is shown. For example, the equipment A may have three sets of binding information OID1, which are formed by combining the object identifier OID1 and three interface identifiers IID1 to IID3 defined corresponding to each of a plurality of functions of the equipment A. FIG. IID1), (OID1, IID2), (OID1, IID3), and the equipment B has two interface identifiers IID1 and IID2 defined in correspondence with the object identifier OID2 and each of a plurality of functions that the equipment B has. ) Has two sets of binding information (OID2, IID1) and (OID2, IID2). In addition, connection information between the local server 3 of LAN-1 and the equipment A is displayed by the connection C12, and the connection between the center server 5 and the Internet 4 is local to LAN-1. The connection C1 concerning the connection with the server 3 and the connection C2 regarding the connection with the local server 3 of LAN-2 are shown.

By the way, in the LAN-1, when the equipment A establishes a connection with the local server 3, the local server 3 manages this connection as the connection C12. Since the binding information held by the equipment A is transmitted from the equipment A to the local server 3 after the environment setting, the binding information is associated with the connection C12 as shown in FIG. 7B. It is registered in the routing table of the local server of LAN-1. Similarly, the binding information of the equipment of LAN-2 is also registered in the routing table of the local server 3 of LAN-2, as shown in Fig. 7C. On the other hand, the binding information of the equipment 2 under LAN1-1 control is transmitted from the local server 3 to the center server 5, and as shown in Fig. 7A, the local server 3 of LAN-1. And the connection C1 which is the connection information between the center server 5 and the center server 5, are stored in the routing table which the center server 5 has.

For example, when the equipment A asks the local server 3 for binding information for accessing a binding (OID2: IID1), since the corresponding binding information is held in the routing table of Fig. 7B, The local server 3 returns the binding information to the equipment A. On the other hand, when the equipment A asks the local server for binding information for accessing the bindings (OID3: IID1), since there is no binding information corresponding to the routing table of Fig. 7B, the local server 3 is the center. The server 5 requests the binding information. Since the corresponding binding information is stored in the routing table (Fig. 7 (A)) of the center server 5, the binding information is transmitted from the center server 5 to the equipment A through the local server 3 of LAN-1. Will be reply. The equipment A receives the binding information, recognizes that the binding exists on the network, and determines that the execution request of the object is possible. It is also possible to make an execution request without confirming that the binding exists on the network.

Next, when the equipment A sends the execution request of the binding (OID3: IID1) to the local server 3, the corresponding binding does not exist on the routing table of the local server 3 of LAN-1. The execution request is sent to the center server 5. The center server 5 searches for the local server 3 that dominates the equipment having the binding (OID3: IID1) with reference to the routing table of Fig. 7A. In this example, since the required bindings OID3: IID1 are associated with the connection C2, the center server 5 transmits an execution request to the local server 3 of LAN-2 associated with the connection C2. The local server of LAN-2 which has received the execution request transmits the execution request to the connection C22 associated with the request binding (OID3: IID1) with reference to the routing table of Fig. 7C. The equipment D received the execution request through the connection C22 executes an operation for the object defined in the binding.

In LAN-1, when the equipment A sends the execution request of the binding (OID2: IID1) to the local server, the binding is performed on the routing table of Fig. 7B managed by the local server of LAN-1. Since this exists, the execution request is sent to the connection C13 related to the binding (OID2: IID1). The equipment B received the execution request through the connection C13 executes an operation for the object defined in the binding.

The request for binding information is to specify all bindings having a specific IID (interface) regardless of the object, such as (*: IID1), in addition to specifying a specific binding such as (OID1: IID1). Like (OID1: *), you can specify all the bindings that a particular OID (object) has.

In the present network system, the terminal device 6 is connected within the LAN so that the terminal device 6 can make an execution request for an object using the identifier from one terminal device to one of the facility devices. It is also possible to make an object execution request to the equipment from outside the LAN by connecting on the Internet. In this case, when the execution request of the object using the identifier from the terminal device is transmitted to the center server, the local server corresponding to the identifier used for the execution request of the object is searched from the routing table managed by the center server, You can send a request to run the object to the local server.

Next, a network system according to a modification of the present embodiment will be described.

In the above-described network system, when the new binding information is registered in the center server 5, the new binding information is transmitted to all the facility devices 2 under the control of each local server 3. It is characterized in that it is transmitted only to the equipment 2 that needs on-new binding information. In addition, since the system configuration and hardware configuration are the same as those of the above system, redundant descriptions are omitted.

In the initial operation of the network system, as shown in FIG. 8, when a request command for binding information required for the equipment 2 to execute an execution request is sent to the local server 3 (S9), this command is executed. Correspondingly, the OAS function unit 30 of the local server 3 corresponds to the local IP address which is the connection identifier of the facility device 2, so that the facility device 2 needs the A process of registering the binding information as the filter information in the routing table in the storage unit 34 is performed (S30). Except for the addition of this registration process, the subsequent initial operation is the same as the initial operation shown in FIG.

As an example, in the system configuration of FIG. 6, filter information registered in the routing table managed by the local server 3 of LAN-1 is shown in FIG. This filter information indicates that the equipment A requests all bindings related to the OID4, and the equipment B requests all the bindings related to the IID1, and each binding information indicates a connection (connection information of the equipment 2). It corresponds to C12) and connection C13.

After completing the initial operation described above, as shown in FIG. 10, when new binding information is registered in the routing table managed by the OAS function unit 50 of the center server 5 (S40), the center server 5 The OAS function unit 50 notifies each local server 3 of this new binding information (S41). The OAS function unit 30 of the local server 3 then checks in the routing table of the storage unit 34 whether there is any equipment 2 that requires new binding information notified from the center server 5. The registration is performed using the registered filter information (S42). If there is no equipment 2 that requires new binding information, the process of transmitting the binding information notified from the center server 5 to the equipment 2 on the LAN is not performed (S43). On the other hand, when there is the equipment 2 which requires new binding information, the binding information notified from the center server 5 is transmitted only to the equipment 2 (S44).

For example, in the system configuration of FIG. 6, when the equipment C is connected to the network, (OID3: IID1), (OID3: IID2), and (OID3: IID3) are transmitted to the center server. Subsequently, all of these new binding information is transmitted from the center server to the local server 3 of LAN-1. In the local server 3, it is checked with reference to the filter information of FIG. 9 whether there is a facility which needs new binding information. That is, since the filter information suitable for the new binding information is not set in the connection C12, the binding information is not transmitted to the equipment A related to the connection C12. On the other hand, in connection C13, since (OID3: IID1) of the new binding information is suitable for the filter information, the binding information of (OID3: IID1) is transmitted to the equipment B related to the connection C13.

In the present modification, the OAS function unit 30 of the local server 3 executes a predetermined program, thereby requiring new binding information from the equipment under load of the local server 3 in accordance with the filter information. Although the function as an identifier distribution part which determines equipment equipment and distributes new binding information to the determined equipment is implemented, you may employ | adopt the structure which installs an identifier distribution part separately from the OAS function part 30. FIG.

As described above, according to the network system of the present modification, the same effects as those in the first embodiment can be obtained, and when new binding information is notified from the center server 5, the OAS function unit 30 of the local server 3 is provided. ) Confirms whether there is any equipment 2 that requires the binding information, and transmits only to the equipment 2 that needs the new binding information, thereby reducing the amount of communication in the LAN. In addition, in the equipment 2, only the binding information required is stored in the storage unit 23, so that the storage capacity required in the storage unit 23 can be saved.

Next, a network system according to another modification of the present embodiment will be described.

In this network system, the binding information required as the entire equipment 2 under the control of each local server 3 is set in advance in the OAS function unit 50 of the center server 5 so that the new binding information is transferred to the center server. When registered in the routing table of (5), it checks which local server 3 is requested by the equipment connected to the local server 3, and notifies only the local server 3 that needs the new binding information. It is characteristic of one point. In addition, since the system configuration and hardware configuration are the same as those of the above system, redundant descriptions are omitted.

The initial operation of the network system according to the present modification is substantially the same as the initial operation shown in FIG. 4 except that the following operations S50 and S51 are added. That is, as shown in Fig. 11, when the request for binding information required by the equipment 2 to execute the execution request is transmitted to the local server 3 (S9), the local server ( The OAS function unit 30 in 3) sets in the storage unit 34 a request binding information table in which only binding information required as the entire LAN including the equipment 2 is registered (S50). Subsequently, the OAS function unit 30 of the local server 3 transmits the request binding information table as the filter information to the center server (S51). The center server 5 stores the filter information transmitted from the local server 3 in a storage unit (not shown) in association with the connection information of the local server 3.

As an example, in the system configuration of FIG. 6, the request binding information table set in the local server 3 of LAN-1 is shown in FIG. 12A. This table shows that the binding information required as the whole LAN-1 including the equipment 2 is all bindings related to OID4 and all bindings related to IID1. 12 (B) is filter information registered in correspondence with C1 which is the request binding information table of FIG. 12 (A) transmitted to the center server and that is the connection information of the local server 3 of LAN-1.

The registration contents of the request binding information table of each local server are updated each time a new equipment device 2 is connected to a LAN controlled by the local server, and a change is made to the binding information required as the whole LAN. That is, when the new equipment 2 is connected to the LAN, the current registration contents of the request binding information table of the local server and new request binding information added according to the connection of the equipment 2 are collated, and this new request is compared. If it is determined that the binding information does not exist in the request binding information table, this new request binding information is newly registered in the request binding information table. On the other hand, when it is determined that this new request binding information already exists in the request binding information table, the request binding information table is not updated. When the update is made, the update is also reflected in the filter information registered in correspondence with the connection information of the local server 3 in the storage unit of the center server 5. In addition, when the new equipment 2 is connected, a change occurs in the filter information for specifying the equipment that requires the new binding information described in the above modification, so that the registered contents of the routing table owned by the local server are also automatically changed. Is updated.

Therefore, when the new equipment 2 is connected, there is no update of the binding information required for the entire LAN, but the case where the filter information (FIG. 9) registered in the routing table of the local server is updated and the request binding is performed. The case where both the registered contents of the information table (FIG. 12A) and the filter information (FIG. 9) registered in the routing table of the local server are updated. In this way, each time the new equipment 2 is connected, the OAS function unit 30 of the local server checks whether the registration contents of the request binding information table of the local server need updating, and automatically updates as necessary. Therefore, one of the important features of the present invention is that the user who uses the network can greatly reduce the burden in the case of expanding the equipment. In this description, although the OAS function unit 30 of the local server 3 executes a predetermined program, the above-described registration contents are checked and automatically updated, but the binding information is independent of the OAS function unit 30. You may employ | adopt the structure which installs an update part and a filter information update part. Alternatively, the information update unit for collectively managing these matching and updating operations may be provided separately from the OAS function unit 30.

After the initial operation is completed, when the new binding information is registered in the routing table managed by the OAS function unit 50 of the center server 5 (S60), as shown in FIG. 13, the center server 5 The new binding information is compared with the filter information registered in the storage unit to check whether or not there is a local server 3 that requires this binding information (S61). If there is no local server 3 requiring new binding information, the center server 5 does not perform a process of transmitting the binding information to the local server (S62). On the other hand, when there is a local server 3 that needs new binding information, new binding information is notified only to the local server (S63). And the OAS function part 30 of the local server 3 which received this binding information notifies all the equipment 2 under the control of the said local server of the new binding information notified from the center server 5. (S64). The equipment 2 having received the new binding information performs a process of storing the new binding information in the storage unit 23.

For example, in the system configuration of FIG. 6, when the equipment C is connected to the network, (OID3: IID1), (OID3: IID2), and (OID3: IID3) are transmitted to the center server. The center server refers to the filter information in Fig. 12B to determine whether there is a local server that needs these new binding information. That is, among the filter information in FIG. 12B, all the binding requests related to the OID4 do not correspond to the binding information owned by the equipment C. However, the equipment C has a response to all the binding requests related to the IID1. Since the binding information (OID3: IID1) corresponds, new binding information is transmitted to the local server 3 of LAN-1 via the connection C1.

In this modification, the OAS function unit 50 of the center server 5 executes a predetermined program to determine the local server 3 requiring new identifier information according to the filter information, and determine the determined local. Although the function as an identifier distribution part which distributes new identifier information to a server is implement | achieved, you may employ | adopt the structure which installs an identifier distribution part separately from the OAS function part 50. FIG.

As described above, according to the network system of the present modification, when the new binding information is registered in the routing table of the center server 5, the OAS function unit 50 notifies only the local server 3 that needs this binding information. Therefore, unnecessary binding information is not notified. As a result, the processing load of the OAS function unit 50 of the center server 5 is reduced, and the amount of communication between the center server 5 and the local server 3 is reduced. It can also be reduced. On the other hand, in the local server 3, since the amount of new binding information transmitted is limited to that required by the entire LAN, the storage capacity required by the storage unit 23 of the equipment 2 is adjusted. You can save.

Next, a network system according to another modification of the present embodiment will be described.

This network system combines the advantages of the two modifications described above. That is, when new binding information is registered in the center server 5, the local server 3 that needs the new binding information is determined, and the new binding among the equipments under the control of the determined local server 3 is determined. The feature is that the equipment 2 that needs information is determined. In addition, since the system configuration and hardware configuration are the same as those of the above system, redundant descriptions are omitted.

The initial operation of the network system according to this modification is substantially the same as the initial operation shown in FIG. 4 except that the following operations S70 to S72 are added. That is, as shown in Fig. 14, when a request for binding information required by the equipment 2 to execute an execution request is sent to the local server 3 (S9), the local server ( The OAS function unit 30 in 3) sets in the storage unit 34 a request binding information table in which only binding information required as the entire LAN including the equipment 2 is registered. Next, the OAS function unit 30 of the local server 3 transmits the request binding information table as the first filter information to the center server (S71). The center server 5 stores the first filter information transmitted from the local server 3 in a storage unit (not shown) in association with the connection information of the local server 3. In addition, in response to a request for binding information transmitted to the local server 3, the OAS function unit 30 of the local server 3 corresponds to a local IP address which is a connection identifier of the equipment, and the equipment 2 A process of registering the binding information of the other equipment 2 as needed in the routing table in the storage unit 34 as the second filter information is performed (S72).

After the initial operation is completed, when the new binding information is registered in the routing table managed by the OAS function unit 50 of the center server 5 (S80), as shown in FIG. 15, the center server 5 The new binding information is compared with the first filter information registered in the storage unit to check whether there is a local server 3 that requires the binding information (S81). If there is no local server 3 requiring new binding information, the center server 5 does not perform a process of transmitting the binding information to the local server (S82). On the other hand, when there is a local server 3 that needs new binding information, the new binding information is notified only to the local server 2 (S83). And the OAS function part 30 of the local server 3 which received this binding information registers in the routing table of the memory | storage part 34 whether there is the equipment 2 which needs new binding information. 2, it searches using the filter information (S84), and notifies only the equipment 2 which needs new binding information (S85).

In this modification, the OAS function unit 50 of the center server 5 executes a predetermined program, thereby determining a local server requiring new identifier information according to the first filter information, and determining the determined local server. Although the function as a 1st identifier distribution part which distribute | distributes new identifier information to is implement | achieved, you may employ | adopt the structure which installs a 1st identifier distribution part separately from the OAS function part 50. FIG. In addition, the OAS function unit 30 of the local server 3 executes the predefined program, so that the equipment that needs new identifier information in the equipment 2 under the control of the local server 3 in accordance with the second filter information. Although the function as a 2nd identifier distribution part which determines a device and distributes new identifier information only to the determined equipment is implemented, you may employ | adopt the structure which installs a 2nd identifier distribution part separately from the OAS function part 30. FIG.

Thus, according to the network system of this modification, when new binding information is registered in the routing table of the center server 5, the OAS function part 50 will only be in the local server 3 which needs this binding information. Since the new binding information is notified, the processing load on the OAS function unit 50 of the center server 5 can be reduced. In addition, since the local server 3 notifies only the equipment 2 that needs the new binding information transmitted from the center server 5, it notifies all the equipment 2 under the control of the local server 3. In comparison with this case, the processing load on the local server 3 can be reduced. In addition, since only the binding information required in the equipment 2 is stored, a storage device having a relatively small storage capacity can be used as the storage of the equipment, thereby improving the cost performance of the entire system. It is planned.

Finally, practical application examples of the network system of the present invention will be described. In addition, since the system configuration and hardware configuration can use the same thing as the said system, the overlapping description is abbreviate | omitted.

As shown in Fig. 16, in this network system, the local server 3 is housed together with the branch breaker group 8 in the distribution board 7 provided in the user area such as a building or a house. Is connected to each of the equipments 2a to 2e and the client terminal 6 such as a PC via a LAN cable. In addition, the local server 3 is connected to the Internet 4 via a communication line to which a modem (not shown) for an Internet connection line provided in the distribution panel 7 is connected, and the center server on the Internet 4. (5) is connected.

In this application example, the fixtures 2a and 2c are lighting fixtures, and the fixtures 2b and 2d are sensor devices incorporating a human body sensor and an illuminance sensor that trigger on / off of the fixture. The lighting control system is constructed by these.

Each of the lighting fixtures 2a and 2c has the structure required as the equipment 2 shown in FIG. 3, The functional part 21 is based on the on / off information transmitted from the information processing part 22. As shown in FIG. The control circuit and the lighting circuit which turn on / off an illumination load are provided. In addition, the object of the module part MOS which the information processing part 22 has is provided with the object identifier OID which identifies the said lighting fixture, and is the interface for lighting ON information defined as function information. When the command of execution request using these binding information has been transmitted through the LAN with the identifier IID and lighting off information defined as function information, the object is executed. In 21), illumination on information or illumination off information is transmitted.

Each of the sensor devices 2b and 2d has the necessary configuration as the equipment 2 shown in FIG. 3, and the functional unit 21 has a human body sensor and an illuminance sensor to read the output of the illuminance sensor. If the ambient brightness is below a certain brightness and the human body sensor detects a person, the lighting-on information is displayed. If the brightness is above a certain brightness, the lighting-off information is displayed regardless of whether the human body detection sensor detects it. It has a signal processing function outputted to (22). The module unit MOS of the information processing unit 22 has an object having an interface identifier defined to treat this as event information when there is a change in the information from the function unit 21, and executes using this binding information. When the command of the request is transmitted, the object is executed, and the command of the execution request is transmitted using the binding information of the objects of the lighting fixtures 2a and 2b having the preset corresponding relationship. In other words, in this lighting control system, the sensor devices 2b and 2d become facility equipment on the side that makes an object execution request to the lighting fixtures 2a and 2c, and the lighting fixtures 2a and 2c perform execution of the object. Configure the equipment of the required side.

When a new sensor device 2e is connected to a LAN having such a lighting control system, the binding information and the IP of the object of the sensor device 2e between the sensor device 2e and the local server 3 as described above. Equipment that is subject to a process of registering an address in a routing table of the local server 3 and a request to execute an object whose sensor device 2e is registered in the routing table of the local server 3 or the center server 5. For example, a process of acquiring the binding information of the lighting fixture 2a and storing it in the storage unit 23 is performed as an initial operation.

After the end of the initial operation, if there is a change in information from the functional unit 21, the information processing unit 22 of the sensor device 2e executes using the binding information of the lighting fixture 2a of the execution request object acquired in the initial operation. A process of generating a request command and transmitting it to the local server 3 via the communication unit 20 is performed.

When the binding information used for the execution request is registered in the binding information registered in the routing table, the OAS function unit 30 of the local server 3 transmits a command of the execution request to the lighting device 2a. On the other hand, when not registered, a process of transmitting a command of execution request to the center server 5 is performed.

In addition to the equipment 2 described above, an air conditioner, a floor heating device, an electric lock, an alarm monitoring device, a recording transmission device, and the like having the necessary configuration as the equipment 2 shown in FIG. 3 may be connected to the LAN. . The alarm monitoring device has a function of wirelessly collecting a state of an abnormal occurrence detection sensor such as various security sensors or disaster prevention sensors and outputting alarm information when an abnormal occurrence is detected. Also, a function of performing a process of generating an alarm by outputting a detection signal received from a sensor for detecting an abnormality detection wirelessly, a detection signal received by the radio receiver to an alarm, or a process of outputting alarm occurrence information to the outside. You may install a part. In addition, the recording transmission device has a function of sending a recorded video of a visitor grasped by a television camera (not shown) of an intercom system to a monitor of the outside or a house, and a recording unit that stores the recorded video data as a function unit. And transfer the recorded video data stored in the information processing unit.

For example, when an object execution request is made from the terminal device 6 installed on the LAN to an air conditioning device and an electric lock connected to the LAN as equipment, an interface identifier (IID) of "going out" of the terminal device. And the correspondence relationship between the identifier (IID) of the interface "air conditioning stop" of the object identifier (OID) "air conditioning equipment" of the air conditioning equipment, and the interface lock (IID) and the electric lock "going out" of the terminal device. If the user registers the correspondence relationship between the object identifier (OID) called "electric lock" and the identifier (IID) of the interface called "lock" in the local server, when the user goes out, Two objects can be completed by a single run request. In other words, when the terminal device makes an execution request using an interface identifier (IID) of "going out" (in this case, the object identifier is arbitrary), the local server "goes out" in the identifier correspondence table of the local server. Check the equipment having a corresponding relationship with the interface identifier (IID). In this example, a facility device (electric lock) having a combination of an object identifier (OID) called "electric lock" and an identifier (IID) of an interface called "lock", and an object identifier (OID) called "air conditioner" and "air conditioning" The equipment (air-conditioning equipment) having a combination of the identifiers (IIDs) of the interface of "operation stop of" is picked up, and the execution request of the object using these identifier information is transmitted to the corresponding equipment. In the facility equipment (electric lock, air conditioning equipment) that has received these execution requests, the functional unit 21 executes the contents (locking, air conditioning stop) of the object defined by the interface identifier.

When the fire detector as an equipment device detects an abnormality (when an event occurs), it is configured to notify an occupant of the abnormality by blinking a lighting device, which is another equipment connected to the home LAN, or the human body sensor detects the abnormality. In this case, it is also possible to construct a system that reduces the illuminance of the lighting fixture and at the same time operates the recording transmission device so that the image can be viewed by a monitor device (not shown) on the LAN.

In this way, the binding information of a plurality of equipment on the side executing the object is matched with the binding information of the equipment on the side requesting the object, thereby simultaneously executing the execution of the plurality of objects in one execution request. can do.

As described above, according to the network system of the present invention, since the routing of the equipment in the LAN is performed by a local server installed on each LAN, it is necessary to manage sessions of all the equipment in the center server disposed on the WAN. In this case, the processing load of the center server can be reduced. In addition, the center server and the local server can cooperatively cope with each other even when the equipment in the LAN makes an object execution request to the equipment under control of another LAN or when the equipment is newly registered. In addition, the present invention having such advantages is a flexible network capable of remotely controlling or remotely monitoring a variety of equipment such as lighting, sensors, air conditioning equipment, heating equipment, electric locks, and the like in an office building or a house with excellent efficiency. Its use value is high in that the system can be built.

Claims (14)

Having at least one local area network (LAN) and a center server connected to a wide area network (WAN), each of the LANs has a function unit for executing a predetermined object, the identifier assigned to the object and A network system in which a plurality of equipments having a connection identifier for network communication and a local server are connected, wherein one of the equipments can make an execution request of an object using the identifier with respect to the other of the equipments. Each of the facility equipment, An information processing unit which transmits the identifier and the connection identifier to the local server in response to a request from the local server, and requests the local server to provide an identifier assigned to an object of another equipment; A storage unit for storing an identifier of another facility device provided from the local server in response to a request of the information processing unit; And An execution request unit for transmitting an execution request of another object of the equipment to the local server using an identifier stored in the storage unit; Including, The local server, A local storage for storing a first routing table; A registration unit that registers the identifier and the connection identifier transmitted from the information processing unit of the facility apparatus in the first routing table; And A matching unit for determining whether the identifier is registered in the first routing table when there is a request to execute an object using the identifier from one of the equipment to the other of the equipment; Take it, When registered in the first routing table, the local server makes a request to execute the object with respect to another one of the equipments, If not registered in the first routing table, the local server sends a request to execute the object to the center server, The LAN is connected to the WAN, and in each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table, The center server, A center storage unit for storing a second routing table;  A center registration unit that registers the identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And When a request for execution of an object using an identifier from a local server connected to one of the plurality of LANs is sent to the center server, a search for the local server corresponding to the identifier used for the execution request of the object from the second routing table is performed. Server search unit for transmitting the execution request of the object Take it, The local server, to which the execution request of the object has been sent by the server retrieval unit, is determined to match the identifier used in the execution request of the object with the registered contents of the first routing table of the local server. A network system that sends requests to run objects. delete delete The method of claim 1, A plurality of LANs are connected to the WAN, In each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table, When the local server receives an identifier of the other equipment from one of the equipment, if the identifier is registered in the first routing table, the local server provides the identifier to one of the equipment. If not registered in the first routing table, the request of the identifier is sent to the center server, The center server, A center storage unit for storing a second routing table; A center registration unit that registers an identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And And an identifier retrieving unit for retrieving an identifier corresponding to the request from the second routing table and transmitting the identifier corresponding to the request to the local server when the request of the identifier is transmitted from the local server to the center server. The method according to claim 1 or 4, In each of the plurality of LANs, the local storage of the local server is required as the entire LAN to which the local server is connected, according to the identifier information of other facility equipment required from each facility device under the control of the local server. Having an identifier information table in which identifier information is set, Each of the local servers provides the content of the identifier information table to the center server as filter information. The center server stores the filter information in a second routing table, and when new identifier information is registered in the second routing table, determines the local server that requires the new identifier information according to the filter information, and determines the determined local. And an identifier distributor for distributing the new identifier information to a server. The method according to claim 1 or 4, The local server registers, as filter information, an identifier of another equipment that each equipment in the LAN needs to make an object execution request in the first routing table in association with the equipment identifier of the equipment, When the new identifier information is registered in the second routing table of the center server, the center server notifies the local server of the new identifier information, The local server distributes an identifier for determining the equipment that needs the new identifier information notified from the center server among the equipment under the control of the local server according to the filter information, and distributes the new identifier information only to the determined equipment. Network system with wealth. The method according to claim 1 or 4, In each of the plurality of LANs, the local storage of the local server is required as the entire LAN to which the local server is connected, according to the identifier information of other facility equipment required from each facility device under the control of the local server. Having an identifier information table in which identifier information is set, Each of the local servers provides the contents of the identifier information table to the center server as first filter information, and at the same time, identifies the identifiers of other equipments required by each equipment in the LAN to execute the object execution request. Register as the second filter information in correspondence with the connection identifier of the equipment in the first routing table, The center server stores the first filter information in a second routing table, When the new identifier information is registered in the second routing table, the first identifier distribution unit determines a local server requiring the new identifier information according to the first filter information, and distributes the new identifier information to the determined local server. have, The local server determines, from the equipment under the control of the local server, equipment equipment that requires the identifier information distributed from the first identifier distribution unit, based on the second filter information. A network system having a second identifier distribution unit for distributing information. Having at least one local area network (LAN) and a center server connected to a wide area network (WAN), each of the LANs has a function unit for executing a predetermined object, the identifier assigned to the object and A plurality of equipment, a terminal apparatus and a local server having a connection identifier for network communication are connected, and either one of the equipment or one of the terminal apparatuses is connected to the other of the equipment using the identifier. A network system capable of making execution requests, Each of the facility equipment, An information processing unit which transmits the identifier and the connection identifier to the local server in response to a request from the local server, and requests the local server to provide an identifier assigned to an object of another equipment; A storage unit for storing an identifier of another facility device provided from the local server in response to a request of the information processing unit; And An execution request unit for transmitting an execution request of another object of the equipment to the local server using an identifier stored in the storage unit; Including, The terminal device, An information processor for requesting a local server to provide an identifier assigned to an object of the equipment; A storage unit for storing an identifier of the equipment provided from the local server in response to a request of the information processing unit; And An execution request unit for transmitting an execution request of one object of the equipment to the local server using an identifier stored in the storage unit; Including; The local server, A local storage for storing a first routing table; A registration unit that registers the identifier and the connection identifier transmitted from the information processing unit of the facility equipment in a first routing table; And A matching unit that determines whether the identifier is registered in the first routing table when an execution request of an object using the identifier is applied to one of the equipments or the other of the equipments from one of the equipments; Take it, When registered in the first routing table, the local server makes a request to execute the object with respect to another one of the equipments, If not registered in the first routing table, the local server sends a request for execution of the object to the center server, The LAN is connected to the WAN, and in each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table, The center server, A center storage unit for storing a second routing table;  A center registration unit that registers the identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And When an execution request of an object using an identifier is transmitted to a center server from a local server connected to one of the plurality of LANs, the local server corresponding to the identifier used for the execution request of the object is searched from the second routing table. A server retrieval unit for transmitting the execution request of the object Has, The local server, to which the execution request of the object has been sent by the server retrieval unit, is determined to match the identifier used in the execution request of the object with the registered contents of the first routing table of the local server. A network system that sends requests to run objects. delete delete The method of claim 8, A plurality of the LANs are connected to the WAN, In each of the plurality of LANs, the local server notifies the center server of the identifier registered in the first routing table, When the identifier is registered in the first routing table when the identifier is requested from one of the equipment or one of the terminal devices, the local server is either one of the equipment or one of the terminal devices. Provide the identifier to one, and if the identifier is not registered in the first routing table, send the request of the identifier to the center server, The center server, A center storage unit for storing a second routing table; A center registration unit that registers the identifier notified from each of the local servers in the second routing table in association with a connection identifier possessed by the local server; And And an identifier retrieving unit for retrieving an identifier corresponding to the request from the second routing table and transmitting the identifier corresponding to the request to the local server when the request of the identifier is transmitted from the local server to the center server. The method according to claim 8 or 11, wherein In each of the plurality of LANs, the local storage unit of the local server is an entire LAN to which the local server is connected, in accordance with the identifier information of each of the equipment under control of the local server and the equipment required from the terminal device. Has an identifier information table in which required identifier information is set, The local server provides the contents of the identifier information table to the center server as filter information, The center server stores the filter information in the second routing table, and when the new identifier information is registered in the second routing table, determines the local server that requires the new identifier information according to the filter information. And an identifier distributor for distributing the new identifier information to a local server. The method according to claim 8 or 11, wherein The local server registers, as filter information, an identifier required for each equipment device and the terminal device in the LAN to execute an object execution request in the first routing table in association with the connection identifier of the equipment, When the new identifier information is registered in the second routing table of the center server, the center server notifies the local server of the new identifier information, The local server determines one or more of the equipment and the terminal device that require the new identifier information notified from the center server from among the equipment and the terminal device under the control of the local server according to the filter information. And an identifier distribution unit for distributing new identifier information to at least one of the determined facility equipment and the terminal device. The method according to claim 8 or 11, wherein In each of the plurality of LANs, the local storage of the local server includes the entire LAN to which the local server is connected according to identifier information of each of the equipment under control of the local server and other equipment required from the terminal apparatus. Has an identifier information table in which identifier information needed is set. The local server provides the contents of the identifier information table to the center server as first filter information, and at the same time, each equipment device in the LAN and the other equipment that the terminal device needs to execute an object execution request. Register the identifier as second filter information in correspondence with the connection identifier of the equipment in the first routing table, The center server stores the first filter information in a second routing table, When the new identifier information is registered in the second routing table, the first identifier distribution unit determines a local server requiring the new identifier information according to the first filter information, and distributes the new identifier information to the determined local server. have, The local server is one or more of the equipment and the terminal device that needs the identifier information distributed from the first identifier distribution unit, the equipment and the terminal under the control of the local server according to the second filter information. And a second identifier distributing unit for determining among devices and distributing the identifier information to at least one of the determined equipment and the terminal device.

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