JP6951629B2 - Transfer device and transfer method - Google Patents

Description

The present invention relates to a transfer device and a transfer method.

In recent years, the construction of a co-creation environment for developing applications by releasing devices such as IoT (Internet of Things) and collecting and utilizing various data from the devices has become active. For example, a sensing data distribution environment has been realized in which a sensor device having a communication function is remotely monitored and controlled, and data measured by the sensor device is collected and utilized.

When developing an application in such an environment, the developer acquires an attribute value representing a desired device model name, location, feature, etc., and accesses and accesses the device based on the obtained attribute value. Collect data from the device.

Japanese Patent Application Laid-Open No. 2013-538617 Special Table 2016-508299

However, conventionally, if the attribute value changes after the developer obtains the attribute value of the device (for example, the location where the device is located changes), the device of the access source originally requested cannot be accessed. there is a possibility.

In one aspect, it is an object of the present invention to provide a transfer device and a transfer method that enable access to a predetermined access source even if the attributes change.

A transfer device is provided to solve the above problems. The transfer device includes a storage unit and a control unit. The storage unit stores the attribute information in association with the access information for accessing the access source of the data belonging to the attribute information. The control unit updates the attribute information at a predetermined opportunity, and when it receives an access request to the access source, the control unit transfers the access request using the access information associated with the attribute information. The control unit detects the second attribute information associated with the access information from the first attribute information updated at a predetermined opportunity, and accesses the access source belonging to the detected second attribute information. The access request is transferred using the information, the access information and the access source are managed in association with each other, the first attribute information is acquired when the access request is received, and the correspondence between the access information and the access source is updated. Perform processing.

Further, in order to solve the above problems, a transfer method is provided in which a computer executes the same control as the transfer device.

According to one aspect, it is possible to access a predetermined access source even if the attribute changes.

It is a figure which shows an example of the structure of a transfer device. It is a figure which shows an example of the structure of an information processing system. It is a figure which shows an example of the hardware configuration of a transfer device. It is a figure which shows an example of the functional block of a transfer device. It is a figure for demonstrating operation of a transfer device. It is a figure for demonstrating an example of the update of the transfer destination table. It is a flowchart which shows the operation of the access information generation part. It is a flowchart which shows the operation of the transfer destination generation / update processing part at the time of access information generation. It is a flowchart which shows the operation at the time of entry generation of a transfer destination table. It is a flowchart which shows the operation when the attribute information update request is received. It is a flowchart which shows the operation when the attribute information match inquiry is received. It is a flowchart which shows the operation of the update process of a transfer destination table. It is a flowchart which shows the operation of the transfer destination entry list acquisition. It is a flowchart which shows the operation of the update of the transfer destination entry. It is a figure for demonstrating the application example of a transfer device.

Hereinafter, the present embodiment will be described with reference to the drawings.
[First Embodiment]
The transfer device of the first embodiment will be described with reference to FIG. FIG. 1 is a diagram showing an example of a configuration of a transfer device. The transfer device 1 includes a control unit 1a and a storage unit 1b. The storage unit 1b stores the attribute information in association with the access information for accessing the access source (device or the like) of the data belonging to the attribute information. The control unit 1a updates the attribute information at a predetermined opportunity, and when the access request to the access source is received, the control unit 1a transfers the access request using the access information associated with the attribute information.

The operation will be described with reference to the example shown in FIG.
[State st1] Devices # 1 and # 2 are arranged at the place P1. The control unit 1a acquires the location P1 as the attribute information of the devices # 1 and # 2, and generates the access information d1 for accessing the device which is the access source of the data belonging to the attribute information.

The control unit 1a associates the access information d1 with the attribute information (location P1). Then, when the access source of the data belonging to the attribute information (location P1) is the device # 1, the control unit 1a manages the access information d1 in association with the device # 1. The correspondence between the access information d1 and the device # 1 is stored in the storage unit 1b.

The terminal 2 (or the application in the terminal 2) shall make an access request to the access source of the data belonging to the attribute information (location P1). When the control unit 1a receives the access request transmitted from the terminal 2, the control unit 1a transfers the access request to the device # 1 by using the access information d1 associated with the attribute information (location P1).

[State st2] It is assumed that the device # 1 has moved from the place P1 to the place P2. The control unit 1a updates the attribute information (location P1) and the attribute information (location P2) as new attribute information at a predetermined opportunity.

The control unit 1a detects the attribute information (location P1) associated with the access information d1 from the attribute information (location P1) and the attribute information (location P2), and determines the device # 2 belonging to the detected location P1. Extract.

Then, the control unit 1a manages the access information d1 in association with the device # 2 which is the access source of the data belonging to the attribute information (location P1). The correspondence between the access information d1 and the device # 2 is stored in the storage unit 1b.

When the control unit 1a receives the access request to the access source of the data belonging to the attribute information (location P1) from the terminal 2, the control unit 1a transfers the access request to the device # 2 by using the access information d1.

That is, the control unit 1a receives the second attribute information (attribute information (location P1) and attribute information (location P2)) associated with the access information d1 from the first attribute information (attribute information (location P1) and attribute information (location P2)) updated at a predetermined opportunity. Attribute information (location P1)) is detected.

Then, the control unit 1a transfers an access request using the access information d1 to the access source (device # 2) of the data belonging to the detected second attribute information (attribute information (location P1)).

In this way, the transfer device 1 generates access information associated with the attribute information, and uses the access information to transfer the access request to the access source of the data belonging to the attribute information. As a result, the transfer device 1 can execute access to a predetermined access source even if the attribute changes.

That is, in the above example, when the device # 1 located at the location P1 is accessed, even if the device # 1 moves to the location P2, the device # 2 is accessed as the access source located at the location P1. Will be possible.

[Second Embodiment]
Next, the second embodiment will be described. First, the system configuration will be described. FIG. 2 is a diagram showing an example of the configuration of the information processing system. The information processing system 1-1 includes a transfer device 10, a terminal 2, an IoT platform 3, and devices 4-1 ..., 4-n.

The terminal 2 and the IoT platform 3 are connected to the transfer device 10, and the devices 4-1, ..., 4-n are connected to the IoT platform 3.
The terminal 2 presents a GUI (Graphical User Interface) to the user, and performs operation input to the transfer device 10 and display of the system operation status. The terminal 2 is also used as a terminal used for application development.

The transfer device 10 is located between the terminal 2 and the IoT platform 3 and has a data relay function. Further, when the transfer device 10 receives an access request for data managed by a predetermined device among the devices 4-1, ..., 4-n from the terminal 2, the transfer device 10 controls the transfer of the access request and determines. Data is acquired from the device and transmitted to the terminal 2.

The IoT platform 3 connects to devices 4-1, ..., 4-n, detects the attributes and operating states of devices 4-1, ..., 4-n, and transfers the detection result to the transfer device 10. It is a module that notifies to. Devices 4-1 ..., 4-n correspond to, for example, IoT devices.

<Hardware configuration of transfer device>
FIG. 3 is a diagram showing an example of the hardware configuration of the transfer device. The entire device of the transfer device 10 is controlled by the processor 100. That is, the processor 100 functions as a control unit of the transfer device 10.

A memory 101 and a plurality of peripheral devices are connected to the processor 100 via a bus 103. The processor 100 may be a multiprocessor. The processor 100 is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), or a PLD (Programmable Logic Device). Further, the processor 100 may be a combination of two or more elements of the CPU, MPU, DSP, ASIC, and PLD.

The memory 101 is used as the main storage device of the transfer device 10. At least a part of an OS (Operating System) program or an application program to be executed by the processor 100 is temporarily stored in the memory 101. Further, the memory 101 stores various data required for processing by the processor 100.

The memory 101 is also used as an auxiliary storage device for the transfer device 10, and stores OS programs, application programs, and various data. The memory 101 may include a semiconductor storage device such as a flash memory or SSD (Solid State Drive) or a magnetic recording medium such as an HDD (Hard Disk Drive) as an auxiliary storage device.

Peripheral devices connected to the bus 103 include an input / output interface 102 and a network interface 104. The input / output interface 102 controls the interface with the terminal 2 shown in FIG. Alternatively, the input / output interface 102 can be connected to a monitor (for example, LED (Light Emitting Diode), LCD (Liquid Crystal Display), etc.) that functions as a display device that displays the status of the transfer device 10 according to an instruction from the processor 100. be.

Further, the input / output interface 102 can be connected to an information input device such as a keyboard or a mouse, and transmits a signal sent from the information input device to the processor 100.
Furthermore, the input / output interface 102 also functions as a communication interface for connecting peripheral devices. For example, the input / output interface 102 can be connected to an optical drive device that reads data recorded on an optical disk by using a laser beam or the like. An optical disc is a portable recording medium on which data is recorded so that it can be read by reflection of light. Optical discs include DVD (Digital Versatile Disc), DVD-RAM (Random Access Memory), CD-ROM (Compact Disc Read Only Memory), CD-R (Recordable) / RW (Rewritable), and the like.

Further, the input / output interface 102 can be connected to a memory device or a memory reader / writer. The memory device is a recording medium equipped with a communication function with the input / output interface 102. A memory reader / writer is a device that writes data to or reads data from a memory card. A memory card is a card-type recording medium.

The network interface 104 controls the interface with the IoT platform 3 shown in FIG. Alternatively, the network interface 104 can control the interface with the network, and for example, a NIC (Network Interface Card), a wireless LAN (Local Area Network) card, or the like can be used. The data received by the network interface 104 is output to the memory 101 and the processor 100.

With the above hardware configuration, the processing function of the transfer device 10 can be realized. For example, the transfer device 10 can perform the transfer control of the present invention by each of the processors 100 executing a predetermined program.

The transfer device 10 realizes the processing function of the present invention, for example, by executing a program recorded on a computer-readable recording medium. The program that describes the processing content to be executed by the transfer device 10 can be recorded on various recording media.

For example, a program to be executed by the transfer device 10 can be stored in the auxiliary storage device. The processor 100 loads at least a part of the program in the auxiliary storage device into the main storage device and executes the program.

It can also be recorded on a portable recording medium such as an optical disk, a memory device, or a memory card. The program stored in the portable recording medium can be executed after being installed in the auxiliary storage device, for example, under the control of the processor 100. The processor 100 can also read and execute the program directly from the portable recording medium.

<Functional block of transfer device>
FIG. 4 is a diagram showing an example of a functional block of the transfer device. The transfer device 10 includes a transfer control unit 11 and a table management unit 12. The transfer control unit 11 has the function of the control unit 1a of FIG. 1, and the table management unit 12 has the function of the storage unit 1b of FIG. Further, the transfer control unit 11 is realized by the processor 100 of FIG. 3, and the table management unit 12 is realized by the memory 101 of FIG.

The transfer control unit 11 includes an access information generation unit 11a, a transfer destination generation / update unit 11b, an attribute management unit 11c, and an access request transfer unit 11d. In addition, the table management unit 12 manages the transfer destination table 12a.

The access information generation unit 11a generates access information associated with the attributes of the device of the access request destination transmitted from the terminal 2 (or application). The access information is, for example, a URI (Uniform Resource Identifier) or data including the URI.

The transfer destination table 12a is a table that stores the access information name and the transfer destination device information in association with each other. The access information name is a name for identifying the access information, and the transfer destination device information is, for example, the URI of the access source of the data belonging to the attribute information.

The transfer destination generation / update unit 11b updates the registered contents of the transfer destination table 12a according to the comparison result between the attribute information of the device managed by the attribute management unit 11c and the attribute information associated with the access information. conduct.

The attribute management unit 11c acquires and manages the attribute information of the device of the access request destination through the IoT platform 3. Further, the attribute management unit 11c compares the attribute information of the device acquired through the IoT platform 3 with the attribute information associated with the access information, and detects a device having the same attribute information.

When the access request transfer unit 11d receives the access request transmitted from the terminal 2, the access request transfer unit 11d detects the transfer destination device by referring to the transfer destination table 12a, and accesses the transfer destination device (or the data managed by the transfer destination device). Forward the request.

<Operation of transfer device>
Next, the flow of the overall operation of the transfer device 10 will be described with reference to FIG. The operation of each component of the transfer device 10 will be described with reference to FIGS. 7 and 7. FIG. 5 is a diagram for explaining the operation of the transfer device.

[Step S11] The terminal 2 has the application a1 to be developed, and recognizes the attributes of the device required for the development of the application a1. Then, the terminal 2 transmits an access information generation instruction including the attribute to the transfer device 10. Although the application a1 is included in the terminal 2 in FIG. 5, the operation terminal and the application development terminal may be separated from each other.

[Step S12] The access information generation unit 11a generates access information (referred to as access information X) associated with the attribute transmitted from the terminal 2.
[Step S12a] The access information generation unit 11a transmits a transfer destination setting request to the transfer destination generation / update unit 11b.

[Step S13] The transfer destination generation / update unit 11b transmits an attribute information inquiry to the access information generation unit 11a.
[Step S14] When the access information generation unit 11a receives the attribute information inquiry, the access information generation unit 11a transmits the attribute information associated with the access information X to the transfer destination generation / update unit 11b.

[Step S15] The transfer destination generation / update unit 11b transmits an attribute information matching inquiry to the attribute management unit 11c.
[Step S15a] When the attribute management unit 11c receives the attribute information matching inquiry, it transmits the attribute information matching inquiry to the IoT platform 3.

[Step S15b] When the IoT platform 3 receives the attribute information matching inquiry, it acquires the current attribute information of the device and transmits it to the attribute management unit 11c.
[Step S15c] The attribute management unit 11c compares the attribute information acquired from the IoT platform 3 with the attribute information associated with the access information X, and extracts devices having matching attribute information.

[Step S16] The transfer destination generation / update unit 11b registers the URI of the device extracted by the attribute management unit 11c in the transfer destination device information column corresponding to the access information X in the transfer destination table 12a. Update the table.

[Step S17] The application a1 transmits an access request to the URI of the access information X generated by the access information generation unit 11a.
[Step S18a] When the access request transfer unit 11d receives the access request, the access request transfer unit 11d detects the transfer destination device with reference to the transfer destination table 12a.

[Step S18b] The access request transfer unit 11d transfers the access request to the detected transfer destination device.
When a plurality of transfer devices 10 are interconnected to form a network, it is conceivable that another transfer device may be described in the transfer destination device information in the transfer destination table 12a. In such a configuration, the attribute management unit 11c can make an inquiry to another transfer device in the same way as inquiring the attribute of the device to the IoT platform 3 when the transfer destination table 12a is updated.

That is, the attribute management unit 11c inquires about the attribute information of the device that can be used from the other transfer device, and the attribute management unit 11c determines whether or not the other transfer device has a device that matches the attribute associated with the access information. It will be judged.

On the other hand, the above table update process in the transfer control unit 11 in the transfer device 10 can be performed, for example, when the transfer control unit 11 receives the access request transmitted from the application a1.

Alternatively, the transfer control unit 11 has a timer, and the table update process can be performed when the timer is started. Further, when the transfer control unit 11 receives the attribute information update message transmitted from the IoT platform 3, the table update process can be performed.

In the above, it is assumed that the attribute management unit 11c extracts the device that matches the attribute information associated with the access information X, but the transfer destination generation / update unit 11b receives the attribute information managed by the attribute management unit 11c. , The device may be configured to execute the device extraction process.

<Example of updating the forwarding table>
FIG. 6 is a diagram for explaining an example of updating the transfer destination table. At time T1, devices # 1 and # 2 are located at location A, and the attribute management unit 11c manages the attribute information of devices # 1 and # 2 as location A.

Further, it is assumed that the application a1 makes an access request to the device located at the place A, and the access information related to the place A is generated as the access information Y. At this time, for example, (access information name, transfer destination device information) = (Y, device # 1) is registered in the transfer destination table 12a-1.

That is, in this case, the application a1 transmits an access request to the device # 1 as a device located at the location A, and collects predetermined data from the device # 1.

On the other hand, at the time T2 when a certain time has elapsed from the time T1, it is assumed that the installation location of the device # 1 has moved from the location A to the location B.
At time T2, device # 2 is located at location A and device # 1 is located at location B. Therefore, the attribute management unit 11c manages the attribute information of the device # 2 as the location A and the attribute information of the device # 1 as the location B.

When the table update timing is reached, the attribute management unit 11c compares the newly acquired and managed attribute information with the attribute information associated with the access information Y, and extracts a matching device.

In this example, since the attribute information associated with the access information Y is the location A, it is determined that the device having the attribute information of the location A is the device # 2, and the device # 2 is extracted. ..

Therefore, when this result is transmitted to the transfer destination generation / update unit 11b, the transfer destination generation / update unit 11b updates the transfer destination table 12a-1, and the transfer destination device information is transmitted from the device # 1. Rewritten to device # 2. That is, the updated transfer destination table 12a-2 becomes a table registered as (access information name, transfer destination device information) = (Y, device # 2).

By performing such an update, it is possible to access the data as requested even if the attribute changes. That is, even if the attribute of the device # 1 accessed through the access information Y changes from the place A to the place B, the device # 2 located at the place A is registered in the access information Y. As a result, the application a1 that transmits the access request via the access information Y can access the access source of the data belonging to the location A as originally requested.

<Access information generation process>
Hereinafter, the operation of each component of the transfer device 10 will be described in detail with reference to a flowchart. FIG. 7 is a flowchart showing the operation of the access information generation unit.

[Step S21] The access information generation unit 11a receives the access information generation instruction transmitted from the terminal 2 operated by the user. The access information generation instruction includes a list of attribute information desired by the user. For example, location = nakahara, type = temperature, etc. are set.

[Step S22] The access information generation unit 11a generates access information. The generated access information is associated with the list of attribute information received in step S21. Further, the generated access information has a URI, and when the application a1 issues a request to the URI, the access information receives the request.

For example, if http: // 10.1.1.1 / obj-r is a URI, application a1 connects to 10.1.1.1 with HTTP (Hypertext Transfer Protocol) and commands GET / obj-r. When you execute, a request is sent to the access information.

[Step S23] The access information generation unit 11a transmits a transfer destination setting request (including the access information name) to the transfer destination generation / update unit 11b.
[Step S24] The access information generation unit 11a receives the transfer destination generation completion from the transfer destination generation / update unit 11b.

[Step S25] The access information generation unit 11a notifies the terminal 2 of the completion of access information generation including the URI of the access information.
<Operation of forwarding destination generation / update processing unit when generating access information>
FIG. 8 is a flowchart showing the operation of the transfer destination generation / update processing unit when the access information is generated. The operation of the transfer destination generation / update unit 11b before updating the table is shown.

[Step S30] The transfer destination generation / update unit 11b receives the transfer destination setting request transmitted from the access information generation unit 11a (the access information name is set as a parameter).
[Step S31] The transfer destination generation / update unit 11b transmits a device attribute information update request to the attribute management unit 11c.

[Step S32] The transfer destination generation / update unit 11b receives the device attribute information update completion notification sent from the attribute management unit 11c.
[Step S33] The transfer destination generation / update unit 11b requests the access information generation unit 11a to list the attribute information associated with the access information generated by the access information generation unit 11a.

[Step S34] The transfer destination generation / update unit 11b receives a list of attribute information associated with the access information.
[Step S35] The transfer destination generation / update unit 11b inquires the attribute management unit 11c of a device that matches the attribute information.

[Step S36] The transfer destination generation / update unit 11b receives the device that matches the attribute information transmitted from the attribute management unit 11c in response to the inquiry in step S35.
[Step S37] The transfer destination generation / update unit 11b transmits a transfer destination entry generation request to the transfer destination table 12a (the parameters of the transfer destination entry are the access information name and the transfer destination device name (transfer destination device information). be).

[Step S38] The transfer destination generation / update unit 11b receives the transfer destination entry generation completion notification sent from the table management unit 12 that manages the transfer destination table 12a.
[Step S39] The transfer destination generation / update unit 11b transmits the transfer destination entry generation completion to the access information generation unit 11a.

<Generation of forwarding table entry>
FIG. 9 is a flowchart showing an operation at the time of generating an entry in the transfer destination table.
[Step S41] The table management unit 12 receives the transfer destination entry generation request transmitted from the transfer destination generation / update unit 11b.

[Step S42] The table management unit 12 generates a transfer destination entry (parameters are an access information name and a transfer destination device information) in the transfer destination table 12a.
[Step S43] The table management unit 12 transmits the transfer destination entry generation completion to the transfer destination generation / update unit 11b.

<Operation of attribute management unit>
Next, the operation of the attribute management unit 11c will be described with reference to FIGS. 10 and 11. FIG. 10 is a flowchart showing an operation when an attribute information update request is received.

[Step S51] The attribute management unit 11c receives the device attribute information update request transmitted from the transfer destination generation / update unit 11b.
[Step S52] The attribute management unit 11c inquires of the IoT platform 3 for the attribute information of the device.

[Step S53] The attribute management unit 11c receives the attribute information of the device currently registered in the IoT platform 3 transmitted from the IoT platform 3 in response to the inquiry in step S52.

[Step S54] The attribute management unit 11c stores the received attribute information.
[Step S55] The attribute management unit 11c transmits the completion of updating the attribute information of the device to the transfer destination generation / update unit 11b.

FIG. 11 is a flowchart showing an operation when an attribute information matching inquiry is received.
[Step S61] The attribute management unit 11c receives an attribute information match inquiry (inquiry request for a device that matches the attribute information) sent from the transfer destination generation / update unit 11b (the parameter is an attribute information list). ..

[Step S62] The attribute management unit 11c stores the attribute information (attribute information associated with the access information) included in the attribute information matching inquiry transmitted from the transfer destination generation / update unit 11b after the acquisition and update of the attribute information. Detects devices that match the attribute information by comparing with the attribute information.

[Step S63] The attribute management unit 11c transmits the detected device information to the transfer destination generation / update unit 11b in response to the inquiry in step S61.
<Update processing of forwarding table>
FIG. 12 is a flowchart showing the operation of the update processing of the transfer destination table.

[Step S71] The transfer destination generation / update unit 11b starts the transfer destination update process by, for example, starting a timer.
[Step S72] The transfer destination generation / update unit 11b transmits a device attribute information update request to the attribute management unit 11c.

[Step S73] The transfer destination generation / update unit 11b receives the device attribute information update completion transmitted from the attribute management unit 11c.
[Step S74] The transfer destination generation / update unit 11b requests a list of transfer destination entries from the transfer destination table 12a.

[Step S75] The transfer destination generation / update unit 11b receives the list of transfer destination entries in response to the request in step S74.
[Step S76] The transfer destination generation / update unit 11b executes the following steps S76-1 to S76-6 for each entry in the transfer destination table 12a.

[Step S76-1] The transfer destination generation / update unit 11b requests the access information generation unit 11a to list the attribute information associated with the access information corresponding to the access information name of the entry.

[Step S76-2] The transfer destination generation / update unit 11b receives a list of attribute information associated with the access information corresponding to the access information name of the entry.
[Step S76-3] The transfer destination generation / update unit 11b transmits an attribute information matching inquiry including the attribute information received in step S76-2 to the attribute management unit 11c.

[Step S76-4] The transfer destination generation / update unit 11b receives the device information that matches the attribute information transmitted from the attribute management unit 11c in response to the inquiry in step S76-3.

[Step S76-5] The transfer destination generation / update unit 11b transmits a transfer destination entry update request to the transfer destination table 12a to update the registered contents of the transfer destination table 12a.
[Step S76-6] The transfer destination generation / update unit 11b receives the transfer destination entry update completion notification sent from the table management unit 12.

<Get list of forwarding entries>
FIG. 13 is a flowchart showing the operation of acquiring the transfer destination entry list.
[Step S81] The table management unit 12 receives the transfer destination entry list request transmitted from the transfer destination generation / update unit 11b.

[Step S82] The table management unit 12 transmits a list of transfer destination entries in the transfer destination table 12a in response to the request in step S81.
<Update of forwarding entry>
FIG. 14 is a flowchart showing the operation of updating the transfer destination entry.

[Step S91] The table management unit 12 receives the transfer destination entry update request transmitted from the transfer destination generation / update unit 11b.
[Step S92] The table management unit 12 updates the transfer destination entry of the transfer destination table 12a.

[Step S93] The table management unit 12 transmits the transfer destination entry update completion to the transfer destination generation / update unit 11b.
<Application example of transfer device>
Next, an application example of the transfer device 10 will be described. FIG. 15 is a diagram for explaining an application example of the transfer device. Company A has a terminal 2 for developing application a1, and company B has a transfer device 10 and a machine tool. Company A requests company B to process the object 5, and company A can monitor the progress of the processing work.

In addition, Company B has a machine tool Mp made by Company P and a machine tool Mq made by Company Q as machine tools, and it is assumed that both are used for processing (which one is used is disclosed to other companies). do not).

[State st11] Company B is processing the object 5 with the machine tool Mp. It is assumed that the attribute information of the machine tool Mp is (location, device name, object to be machined) = (Company B, Mp, 5), and the access information Z is associated with this attribute information. The transfer device 10 registers (access information name, transfer destination device information) = (Z, Mp) in the transfer destination table 12a-3.

The application a1 in the company A sends an access request to the access information Z in order to know the work progress of the object 5. Upon receiving the access request, the transfer device 10 refers to the transfer destination table 12a-3 and recognizes that the transfer destination device information is the machine tool Mp. Then, the transfer device 10 transmits an access request to the machine tool Mp, acquires the progress data of the machining work of the object 5 from the machine tool Mp, and transmits the acquired progress data to the application a1.

[State st12] At Company B, it is assumed that the machining of the object 5 is transferred from the machine tool Mp to the machine tool Mq, and the machining work is continued on the machine tool Mq. The attribute information of the machine tool is (location, device name, object to be machined) = (Company B, Mq, 5), and access information Z is associated with this attribute information. Therefore, the transfer device 10 generates the updated transfer destination table 12a-4 in which (access information name, transfer destination device information) = (Z, Mq) is registered.

The application a1 in the company A sends an access request to the access information Z in order to know the work progress of the object 5. Upon receiving the access request, the transfer device 10 refers to the transfer destination table 12a-4 and recognizes that the transfer destination device information is the machine tool Mq. Then, the transfer device 10 transmits an access request to the machine tool Mq, acquires the progress data of the machining work of the object 5 from the machine tool Mq, and transmits the acquired progress data to the terminal 2.

In this way, by the function of the transfer device 10, Company A simply sends an access request to the access information Z, and even if the machine tools that process the object 5 are different in B, the work progress of the object 5 can be determined. Can be obtained.

In the above example, the transfer device 10 is installed in company B, but it may be installed in company A to form a network, or a centralized node on the network may be provided with the function of the transfer device 10. May be good.

As described above, the transfer device 10 generates access information associated with the attribute of the device, updates the correspondence between the attribute and the access information according to the change of the attribute, and transfers the access request using the access information. .. As a result, even if the attribute changes, it is possible to access a predetermined device having the attribute information as originally requested.

The processing functions of the transfer devices 1 and 10 of the present invention described above can be realized by a computer. In this case, a program describing the processing contents of the functions that the transfer devices 1 and 10 should have is provided. By executing the program on a computer, the above processing function is realized on the computer.

The program describing the processing content can be recorded on a computer-readable recording medium. Computer-readable recording media include magnetic storage devices, optical disks, opto-magnetic recording media, semiconductor memories, and the like. Magnetic storage devices include hard disk devices (HDD), flexible disks (FD), magnetic tapes, and the like. Optical discs include DVDs, DVD-RAMs, CD-ROMs / RWs, and the like. The magneto-optical recording medium includes MO (Magneto Optical disk) and the like.

When a program is distributed, for example, a portable recording medium such as a DVD or a CD-ROM on which the program is recorded is sold. It is also possible to store the program in the storage device of the server computer and transfer the program from the server computer to another computer via the network.

The computer that executes the program stores, for example, the program recorded on the portable recording medium or the program transferred from the server computer in its own storage device. Then, the computer reads the program from its own storage device and executes the processing according to the program. The computer can also read the program directly from the portable recording medium and execute the processing according to the program.

In addition, the computer can sequentially execute processing according to the received program each time the program is transferred from the server computer connected via the network. Further, at least a part of the above processing functions can be realized by an electronic circuit such as a DSP, ASIC, or PLD.

Although the embodiment has been illustrated above, the configuration of each part shown in the embodiment can be replaced with another having the same function. Further, any other components or processes may be added. Further, any two or more configurations (features) of the above-described embodiments may be combined.

1 Transfer device 1a Control unit 1b Storage unit 2 Terminal st1, st2 Status d1 Access information # 1, # 2 Device P1, P2 Location

Claims (4)

A storage unit that stores attribute information in association with access information for accessing an access source of data belonging to the attribute information.
When the attribute information is updated at a predetermined opportunity and an access request to the access source is received, a control unit that transfers the access request using the access information associated with the attribute information, and a control unit.
With
The control unit
From the first attribute information updated at the predetermined opportunity, the second attribute information associated with the access information is detected, and the access source belonging to the detected second attribute information is described. The access request is forwarded using the access information,
The access information and the access source are managed in association with each other, the first attribute information is acquired when the access request is received, and the correspondence relationship between the access information and the access source is updated.
Transfer apparatus. A storage unit that stores attribute information in association with access information for accessing an access source of data belonging to the attribute information.
When the attribute information is updated at a predetermined opportunity and an access request to the access source is received, a control unit that transfers the access request using the access information associated with the attribute information, and a control unit.
With
The control unit
From the first attribute information updated at the predetermined opportunity, the second attribute information associated with the access information is detected, and the access source belonging to the detected second attribute information is described. The access request is forwarded using the access information,
The access information and the access source are managed in association with each other, the first attribute information is acquired when the timer is started, and the correspondence relationship between the access information and the access source is updated .
Transfer apparatus. A storage unit that stores attribute information in association with access information for accessing an access source of data belonging to the attribute information.
When the attribute information is updated at a predetermined opportunity and an access request to the access source is received, a control unit that transfers the access request using the access information associated with the attribute information, and a control unit.
With
The control unit
From the first attribute information updated at the predetermined opportunity, the second attribute information associated with the access information is detected, and the access source belonging to the detected second attribute information is described. The access request is forwarded using the access information,
The access information and the access source are managed in association with each other, and when the attribute information update message transmitted from the access source is received, the first attribute information is acquired, and the access information and the access source are combined. Update the correspondence ,
Transfer apparatus. The computer
The attribute information and the access information for accessing the access source of the data belonging to the attribute information are associated and stored in the memory.
The attribute information is updated at a predetermined opportunity,
When receiving an access request to the access source, and transfers the access request by using the access information associated with the attribute information,
From the first attribute information updated at the predetermined opportunity, the second attribute information associated with the access information is detected, and the access source belonging to the detected second attribute information is described. The access request is forwarded using the access information,
The access information and the access source are managed in association with each other, the first attribute information is acquired when the access request is received, and the correspondence relationship between the access information and the access source is updated.
Transfer method.

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