JP7371410B2 - Information processing device and information processing program - Google Patents

Description

The present invention relates to an information processing device and an information processing program.

Conventionally, a sensor relay device relays and transfers sensor data detected by a plurality of sensor terminals to a processing device, and includes a communication standard compatibility list in which the sensor terminals and communication standards are registered in association with each other, and the communication standard compatibility list. There is a sensor relay device characterized by comprising a storage unit that stores a communication format used in the standard.

By communicating with the sensor terminal based on the communication standard corresponding to the sensor terminal specified from the communication standard compatibility list, the sensor data detected by the sensor terminal is received, and the sensor data corresponding to the communication standard is received. The apparatus further includes a relay processing section that converts the format of the sensor data based on a communication format and then relays the sensor data to a processing device.

The device further includes a relay management unit that updates the communication standard compliance list or communication format in the storage unit based on the communication standard compliance list or communication format newly notified from the processing device (for example, see Patent Document 1).

Special table 2017-175703 publication

By the way, in conventional sensor relay devices (relay devices), it is not specified how to update the communication format. In particular, nothing is specified as to how protocol conversion should be performed.

For example, when a relay device relays data between a control device (control unit) and multiple devices, the communication protocols of the multiple devices may differ, or the data format etc. may differ depending on the function of the device. In such cases, protocol conversion cannot be easily performed.

Therefore, it is an object of the present invention to provide an information processing device and an information processing program that can easily perform data protocol conversion.

The information processing apparatus according to the embodiment of the present invention includes data used for protocol conversion processing between a first protocol on the first network side and a second protocol on the second network side, which are connected via the second network. an information acquisition unit that acquires device access information specific to a device; and a first storage unit that stores the device access information acquired by the information acquisition unit in association with information representing an access destination included in the device access information. an information generation unit that generates common access information that represents the access destination of the acquired device access information in a common format for a plurality of devices; an information providing unit that provides information to a connected control unit; a determining unit that determines an access destination to be accessed by the control unit via the first network and the second network based on the provided common access information; an information selection unit that selects device access information corresponding to the access destination determined by the determination unit from the device access information stored in the first storage unit; and identification based on the device access information selected by the information selection unit. protocol conversion of first data received from the control unit via the first network , and protocol conversion of first data received from the device via the second network using protocol conversion rules for the first protocol and the second protocol. the information representing the access destination is information representing the device name and function name of the device, and the device access information includes the device name , the The common access information includes information representing a function name, a data format of the first data, and a data format of the second data, and the common access information includes, in addition to the access destination, the data format of the first data and the data format of the second data. information representing a data format of the second data; The common access information is generated based on the format .

An information processing device and an information processing program that can easily perform data protocol conversion can be provided.

FIG. 1 is a diagram showing a system 1 including a GW 100 according to an embodiment. FIG. 2 is a perspective view of a computer system 20 that implements the GW 100. 2 is a block diagram illustrating the configuration of main parts in a main body 21 of a computer system 20. FIG. 3 is a diagram schematically showing the processing of the GW 100 and the smartphone terminal 70. FIG. It is a figure explaining the protocol conversion process in GW100. It is a diagram showing the functional configuration of the GW 100. FIG. 3 is a diagram showing data in which device access information and protocol conversion rules are associated. FIG. 3 is a diagram showing data in which a device name, a function name, and device access information are associated with each other. It is a flowchart which shows the process which control device 110 of GW100 performs. It is a flowchart which shows the process which control device 110 of GW100 performs. It is a figure explaining the processing of GW100. It is a figure explaining the processing of GW100. It is a figure explaining the processing of GW100.

Embodiments to which an information processing apparatus and an information processing program of the present invention are applied will be described below.

<Embodiment>
FIG. 1 is a diagram showing a system 1 including a GW (Gateway) 100 according to an embodiment. The system 1 includes a FAN (Field Area Network) 50, a network 60, and a smartphone terminal 70. The GW 100 is included in the FAN 50 and is an example of an information processing device.

The FAN 50 includes devices A and B in addition to the GW 100. Inside the FAN 50, the GW 100 and devices A and B are connected by a bus 51. Devices A and B are devices that perform information processing, such as PCs (Personal Computers).

The network 60 is, for example, a WAN (Wide Area Network), which is the so-called Internet. Note that the network 60 may be of a type other than WAN.

The smartphone terminal 70 has a control section 70A. The control unit 70A is a control unit that executes one of the functions of the smartphone terminal 70, and executes a function that is realized by executing an application program used to operate the devices A and B. It is shown as a block.

The GW 100 is connected to devices A and B via a bus 51 inside the FAN 50, and connected to a smartphone terminal 70 via a network 60 outside the FAN 50. Since the protocol used when the GW 100 and the smartphone terminal 70 communicate via the network 60 is different from the protocol used when the GW 100 and devices A and B communicate within the FAN 50, the GW 100 performs protocol conversion processing. and relay the data.

The protocol used when the GW 100 and the smartphone terminal 70 communicate is an example of the first protocol, and a specific example is the HTTP (Hyper Text Transfer Protocol) protocol. Further, the network 60 is an example of a first network.

The protocol used when the GW 100 and devices A and B communicate within the FAN 50 is an example of the second protocol, and a specific example is a serial communication protocol. FAN 50 is an example of a second network.

Note that the protocol used when device A communicates with GW 100 and the protocol used when device B communicates with GW 100 may be different.

FIG. 2 is a perspective view of a computer system 20 that implements the GW 100. The computer system 20 shown in FIG. 2 includes a main body 21, a display 22, a keyboard 23, a mouse 24, and a communication module 25.

The main body 21 includes a CPU (Central Processing Unit), an HDD (Hard Disk Drive), a disk drive, and the like. The display 22 displays processing results and the like on the screen 22A according to instructions from the main body 21. The display 22 may be, for example, a liquid crystal monitor. The keyboard 23 is an input unit for inputting various information into the computer system 20. The mouse 24 is an input unit for specifying an arbitrary position on the screen 22A of the display 22. The communication module 25 communicates with the smartphone terminal 70 via wireless communication, and also communicates with devices A and B via wired communication.

The information processing program that makes the computer system 20 function as the GW 100 is stored in a portable recording medium such as a disk 27 or downloaded from a recording medium 26 of another computer system using a communication device such as a communication module 25. The data is input into the computer system 20 and compiled.

The information processing program that makes the computer system 20 function as the GW 100 causes the computer system 20 to operate as the GW 100. This information processing program may be stored in a computer-readable recording medium such as the disk 27, for example. Computer-readable recording media are limited to portable recording media such as disks 27, IC card memories, magnetic disks such as floppy (registered trademark) disks, magneto-optical disks, CD-ROMs, and USB (Universal Serial Bus) memories. It's not something you can do. The computer-readable recording medium includes various recording media that can be accessed by a computer system connected via the communication module 25 or a communication device such as a LAN.

FIG. 3 is a block diagram illustrating the configuration of main parts within the main body 21 of the computer system 20. As shown in FIG. The main unit 21 includes a CPU 31 connected via a bus 30, a memory unit 32 including RAM (Random Access Memory) or ROM (Read Only Memory), a disk drive 33 for the disk 27, and a hard disk drive (HDD) 34. .

Note that the computer system 20 is not limited to the configuration shown in FIGS. 2 and 3, and various well-known elements may be added or alternatively used.

FIG. 4 is a diagram schematically showing the processing of the GW 100 and the smartphone terminal 70. In FIG. 4, only the GW 100, the smartphone terminal 70, and the device A are shown, and the others are omitted. Further, here, in explaining the functions of the devices, Function 1 of Device A will be used as an example, but the same applies to functions other than Function 1 of Device A and devices other than Device A. Further, here, the description will be made assuming that the GW 100 has a memory. The memory of the GW 100 is realized by the memory unit 32 and HDD 34 of the GW 100 shown in FIG.

First, as shown in step (1), device access information is registered in the GW 100. When the administrator of the GW 100 or device A registers the device access information in the GW 100 by operating the keyboard 23, mouse 24, etc. (see FIG. 2), the GW 100 stores the device access information in its memory.

The device access information of device A is information specific to device A, including the name of device A (device name), function name (here, function 1), protocol, command, input data format (input), output data. The format (output) is The function name represents a function that device A has.

The protocol is a protocol used by device A in communication with GW 100, and is protocol X here. The command represents a command for executing a function of device A. The command is expressed in HEX (hexadecimal) format, and is "0A" here.

The input data format (input) represents the format of data (input data) input from the smartphone terminal 70 to the device A via the GW 100, and is "Number" here. The input data is an example of first data.

The output data format (output) represents the format of data (output data) output from the device A to the smartphone terminal 70 via the GW 100, and is "String" (character string) here. The output data is an example of second data.

Further, when registering the device access information in the GW 100 as shown in step (1), the GW 100 associates data representing a protocol conversion rule according to the protocol included in the device access information with the device access information and stores it in the memory. Store in. In this case, data representing protocol conversion rules corresponding to a plurality of protocols may be stored in a memory in advance and associated with device access information registered by the administrator of the GW 100 or device A within the memory. The protocol included in the device access information represents the protocol used by the device to communicate with the GW 100.

Further, the protocol conversion rules are rules for converting protocols for each protocol used for communication between the GW 100 and devices. Details will be described later using FIG. 5.

Note that although the device access information of device A has been described here, the device access information of device B is information specific to device B and is similar to the device access information of device A. Further, the same applies to device access information of devices other than devices A and B.

Next, as shown in step (2), the GW 100 generates common access information from the device access information. The common access information includes a URL (Uniform Resource Locator), the input data format (input) and the output data format (output) included in the device access information. This is information written in the following format.

The access destination represented by the URL (http://ZZZ/DevA/Func1) is function 1 of device A, and the URL includes a device name (DevA: device A) and a function name (Func1: function 1). When the smartphone terminal 70 accesses device A via the GW 100 based on such a URL, the GW 100 recognizes that the access is to a predetermined function of the device specified by the device name and function name. recognize. Note that ZZZ in the URL represents the host name of the GW 100.

When the GW 100 generates such common access information from the device access information, the GW 100 associates the device access information and the common access information and stores them in the memory.

Next, as shown in step (3), the GW 100 transmits the common access information to the smartphone terminal 70. The common access information is transmitted to the smartphone terminal 70 via the network 60 (see FIG. 1).

Next, as shown in step (4), the smartphone terminal 70 accesses the function 1 of the device A via the GW 100 based on the URL included in the common access information. This is a request for access to function 1 of device A by the smartphone terminal 70.

The data (body) transmitted by the smartphone terminal 70 in the access request is an example of first data, and is "100" as an example here. Since the format (input) of the input data is "Number", the smartphone terminal 70 is transmitting data represented by numbers to the GW 100. For example, if the function 1 of device A accessed by the smartphone terminal 70 is a speaker, the data (body) represents the volume level.

Next, as shown in step (5), the GW 100 performs protocol conversion processing. Based on the device name and function name included in the URL included in the common access information used by the smartphone terminal 70 for access, the GW 100 reads out the device access information corresponding to the device name and function name from the memory. The data received from the smartphone terminal 70 is converted using the protocol conversion rules defined by the device access information. Here, as an example, the data obtained by the conversion is "0A020064".

Then, as shown in step (6), the GW 100 transmits the protocol-converted data "0A020064" to the device A.

Although not shown here, device A that has received data from the smartphone terminal 70 via the GW 100 transmits certain data to the smartphone terminal 70 via the GW 100 as a response to the smartphone terminal 70. You may. In this case, the GW 100 converts the protocol of the data output by the device A using the protocol conversion rule used in step (5), and transmits the data to the smartphone terminal 70. The data output by device A in this case is an example of second data, and device A outputs data according to the output data format.

Note that device A stores data representing the output data format in its internal memory, and when outputting data, it refers to the output data format in the internal memory and selects the data according to the output data format. All you have to do is output .

FIG. 5 is a diagram illustrating protocol conversion processing in the GW 100. Similarly to FIG. 4, in FIG. 5, the function 1 of device A is used as an example, and the explanation will be given assuming that the GW 100 has a memory.

When the smartphone terminal 70 accesses the GW 100 and transmits data based on the URL included in the common access information, the GW 100 obtains the URL and data (see upper left of FIG. 5). The URL represents the access destination of device A as seen from the smartphone terminal 70. Access destinations are determined by device type and functionality.

Further, the GW 100 reads the device type and function (here, DevA and Func1) included in the URL, and reads device access information corresponding to the read device type and function from the memory (see the upper right of FIG. 5).

Further, the GW 100 reads data representing a protocol conversion rule associated with the read device access information from the memory.

Then, the GW 100 uses the read protocol conversion rule to convert the protocol of the data received (input) from the smartphone terminal 70 into a protocol between the GW 100 and the device.

FIG. 5 shows protocol X conversion processing for protocol X as an example. The protocol conversion rules for the protocol X conversion process are such that a command is written in the first byte, a data size is written in the second byte, and data is written in the third and subsequent bytes. The data is written in HEX data (hexadecimal data), and when the input data format (input) is Number, the data size is set to 2 bytes. Furthermore, the values of the first and second bytes are also expressed in hexadecimal. Such protocol conversion rules are prepared for each protocol and stored in the memory 120.

The GW 100 generates data in which the device access information command is "0A", the second byte is the data size "02" (2 bytes), and the third and fourth bytes are data. If the data input from the smartphone terminal 70 is "100", it is converted to data "0A020064".

Then, the GW 100 transmits the data "0A020064" obtained through the protocol conversion to the device A.

Such protocol conversion rules are provided for each protocol used for communication between the GW 100 and devices. Therefore, for example, a common protocol conversion rule can be used for devices that communicate with the GW 100 using protocol X.

As described above, the protocol conversion rule is a rule that defines data to be written in order starting from the first byte. Converting the access request from the smartphone terminal 70 into data according to the protocol used for communication between the GW 100 and the device by writing data in order from the first byte as specified in the protocol conversion rules. I can do it.

By using such a protocol conversion rule, if the protocols used for communication between the GW 100 and the device are the same, a common protocol conversion rule can be used. This is because the protocol conversion rule does not include device-specific information (here, command and data size).

Although FIG. 5 shows protocol conversion rules for protocol X, there are also protocol conversion rules that define predetermined conversion rules for protocols other than protocol X.

FIG. 6 is a diagram showing the functional configuration of the GW 100. GW 100 includes a control device 110 and a communication unit 130. The control device 110 is realized by the CPU 31, the memory section 32, and the HDD 34 shown in FIG. 3, and the communication section 130 is realized by the communication module 25 shown in FIG. 2. The communication unit 130 implemented by the communication module 25 includes a wireless communication module that communicates with the smartphone terminal 70 via wireless communication, and a wired communication module that communicates with devices A and B via wired communication.

The control device 110 includes a main control section 111, an information acquisition section 112, an information generation section 113, an information provision section 114, a discrimination section 115, an information selection section 116, a conversion rule selection section 117, a protocol conversion processing section 118, and a communication processing section 119. , memory 120. The memory 120 is the memory of the GW 100 described in FIGS. 4 and 5.

The main control unit 111 , the information acquisition unit 112 , the information generation unit 113 , the information provision unit 114 , the determination unit 115 , the information selection unit 116 , the conversion rule selection unit 117 , the protocol conversion processing unit 118 , and the communication processing unit 119 are the control device 110 This shows the functions of the program executed by the program as functional blocks. Furthermore, the memory 120 is a functional representation of the memory unit 32 and HDD 34 (see FIG. 3) of the GW 100.

The main control unit 111 is a processing unit that controls the processing of the control device 110, and includes an information acquisition unit 112, an information generation unit 113, an information provision unit 114, a determination unit 115, an information selection unit 116, a conversion rule selection unit 117, a protocol It executes processes other than those performed by the conversion processing unit 118 and communication processing unit 119.

The information acquisition unit 112 acquires device access information specific to devices A and B. The information acquisition unit 112 acquires device access information registered in the GW 100 as in step (1) of FIG. 4, and stores it in the memory 120.

The information generation unit 113 generates common access information from the device access information as in step (2) of FIG. 4, and associates the generated common access information with the device access information acquired by the information acquisition unit 112. Stored in memory 120.

The information providing unit 114 provides the common access information generated by the information generating unit 113 to the smartphone terminal 70, as in step (3) of FIG. 4. The common access information is transmitted from the communication unit 130 to the smartphone terminal 70 via the network 60.

The determination unit 115 determines whether the smartphone terminal 70 accesses the device (A or B) via the GW 100 based on the URL included in the common access information, as in step (4) of FIG. The access destination that the terminal device 70 accesses is determined. The access destination is determined based on the device name and function name included in the URL.

The information selection unit 116 selects device access information corresponding to the access destination device name and function name determined by the determination unit 115. Since the device name, function name, and device access information are stored in the memory 120 in association with each other, the information selection unit 116 selects the device access information associated with the device name and function name within the memory 120. .

The conversion rule selection unit 117 selects a protocol conversion rule specified by the device access information selected by the information selection unit 116. Since the device access information and the data representing the protocol conversion rule are stored in the memory 120 in association with each other, the conversion rule selection unit 117 selects the protocol conversion rule associated with the device access information in the memory 120. .

The protocol conversion processing unit 118 converts data received from the smartphone terminal 70 via the network 60 based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. A protocol conversion process is performed to convert the protocol of GW 100 to a protocol between the GW 100 and the device. This corresponds to step (5) shown in FIG.

In this way, when the protocol conversion rule is a rule that requires a description of part of the information included in the device access information, the device access information is used when converting the protocol. Therefore, in such a case, the protocol conversion processing unit 118 uses the protocol conversion rule to convert the protocol of the data received from the smartphone terminal 70 into the protocol between the GW 100 and the device. The conversion processing unit 118 converts data received from the smartphone terminal 70 via the network 60 based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. This is synonymous with converting the protocol into a protocol between the GW 100 and the device.

The communication processing unit 119 is an example of a first data transmission unit, and receives data transmitted from the smartphone terminal 70 and transmits the data that has been subjected to protocol conversion by the protocol conversion processing unit 118 to the device (A or B). Perform processing to send. Further, the communication processing unit 119 is an example of a second data transmission unit, and receives data output from the device (A or B), and transfers the data that has been protocol-converted by the protocol conversion processing unit 118 to the smartphone terminal. 70. The communication processing unit 119 performs the above-described transmission and reception processing via the communication unit 130.

The memory 120 is an example of a storage unit, a first storage unit, and a second storage unit, and stores data, programs, etc. necessary for the control device 110 to perform the above-described processing. This program includes an information processing program that allows the computer system 20 (see FIG. 2) to function as the GW 100.

The communication unit 130 performs communication between the GW 100 and the smartphone terminal 70 via the network 60, and communication between the GW 100 and devices A and B within the FAN 50 via the bus 51.

FIG. 7 is a diagram showing data in which device access information and protocol conversion rules are associated, which is stored in the memory 120. IDs (Identifiers) are assigned to the device access information and protocol conversion rules as shown in FIG. 7, and the IDs are associated with each other as data in the table format shown in FIG. The device access information with the ID DA001 is associated with the protocol conversion rule with the ID CR001, and the device access information with the ID DA002 is associated with the protocol conversion rule with the ID CR002. Although omitted here, the protocol conversion rule for a predetermined ID is also associated with device access information for other IDs.

FIG. 8 is a diagram showing data in which a device name, a function name, and device access information are associated with each other, which is stored in the memory 120. As shown in FIG. 8, device names, function names, and device access information are associated. The device access information includes the device name and function name as shown in Figure 4, and the URL of the common access information includes the device name and function name as shown in Figure 4. Device access information can be identified based on the

The device name "DevA" and the function name "1" are associated with the device access information with the ID "DA001", and the device name "DevB" and the function name "1" are associated with the device access information with the ID "DA002". Associated with device access information. Although omitted here, device access information of a predetermined ID is also associated with other device names and function names.

FIG. 9 is a flowchart showing the processing executed by the control device 110 of the GW 100.

The information acquisition unit 112 starts processing (start) when device access information is registered in the GW 100.

The information acquisition unit 112 stores the device access information and data representing the protocol conversion rule in the memory 120 in association with each other (step S1). Since the data representing the protocol conversion rule is registered in the memory 120 in advance, the information acquisition unit 112 reads the protocol name included in the registered device access information, and extracts the protocol conversion rule corresponding to the read protocol name. Data representing the data is extracted from the memory 120 and stored in the memory 120 in association with the device access information. As a result, the data shown in FIG. 7 is obtained.

Next, the information generation unit 113 generates common access information from the device access information stored in the memory 120 in step S1 (step S2).

Next, the information generation unit 113 associates the device name and function name included in the URL of the common access information generated in step S2 with the device access information stored in the memory 120 in step S1, and stores them in the memory 120 (step S3). As a result, the data shown in FIG. 8 is obtained.

Next, the information providing unit 114 provides the common access information generated by the information generating unit 113 to the smartphone terminal 70 (step S4). The device access information is transmitted from the communication unit 130 to the smartphone terminal 70 via the network 60.

This completes the process up to providing the common access information to the smartphone terminal 70 (end). The processes of steps S1 to S4 are performed every time device access information is registered in the GW 100.

FIG. 10 is a flowchart showing the processing executed by the control device 110 of the GW 100.

The determination unit 115 starts processing upon receiving an access request from the smartphone terminal 70 (start).

The determining unit 115 determines the access destination that the smartphone terminal 70 accesses based on the URL of the access request (step S5). The access destination is determined based on the device name and function name included in the URL.

The information selection unit 116 uses the access destination device name and function name determined by the determination unit 115 to select the data (device name, function name, device access The device access information corresponding to the device name and function name of the access destination is selected from the data associated with the information (see FIG. 8) (step S6).

The conversion rule selection unit 117 selects a protocol conversion rule associated with the device access information selected by the information selection unit 116 (step S7). In the process of step S7, the conversion rule selection unit 117 uses the device access information selected by the information selection unit 116 to associate data stored in the memory 120 (device access information and data representing protocol conversion rules). This is a process of selecting a protocol conversion rule associated with device access information from data (see FIG. 7).

The protocol conversion processing unit 118 converts data received from the smartphone terminal 70 via the network 60 based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. The protocol conversion is performed (step S8).

The communication processing unit 119 transmits the data subjected to the protocol conversion by the protocol conversion processing unit 118 to the device (A or B) (step S9).

This completes the series of processing (end).

Next, the processing of the GW 100 will be explained using FIGS. 11 to 13. 11 to 13 are diagrams illustrating the processing of the GW 100.

In FIG. 11, only the GW 100, the smartphone terminal 70, and the device A are shown, and the others are omitted.

As shown in the device access information, device A has functions 1 and 2, and functions 1 and 2 have different commands, input, and output formats.

First, as shown in step (1), when device access information is registered in the GW 100, the information acquisition unit 112 stores the device access information in the memory 120. Note that at this time, the information acquisition unit 112 stores the device access information and data representing the protocol conversion rule in the memory 120 in association with each other.

For function 1, the protocol is X, the command is "0A", the input data format (input) is "Number", and the output data format (output) is "String". Further, for function 2, the protocol is X, the command is "0B", the input data format (input) is "String", and the output data format (output) is "Number". That is, functions 1 and 2 have the same protocol, different commands, and different input data formats (input) and output data formats (output).

Next, as shown in step (2), the information generation unit 113 generates common access information from the device access information. Common access information is generated separately for functions 1 and 2.

The common access information for function 1 is that the URL is "http://ZZZ/DevA/Func1", the input data format (input) is "Number", and the output data format (output) is "String". . The common access information for function 2 is that the URL is "http://ZZZ/DevA/Func2", the input data format (input) is "String", and the output data format (output) is "Number". .

In this way, the common access information for functions 1 and 2 is written in a common format. Furthermore, the protocol type and command are information unique to functions 1 and 2 of device A, and are difficult to describe in a common format, so they are not included in the common access information.

When the information generation unit 113 generates such common access information from the device access information, the information generation unit 113 associates the device access information and the common access information with respect to functions 1 and 2 and stores them in the memory.

Next, as shown in step (3), the information providing unit 114 provides the common access information to the smartphone terminal 70.

Next, as shown in step (4), the smartphone terminal 70 requests access to functions 1 and 2 of device A based on the URL included in the common access information. Here, for convenience of explanation, access requests to functions 1 and 2 of device A are shown in parallel, but this does not mean that they are performed simultaneously, and they can be performed separately.

Since the input data format (input) for function 1 is "Number", the data (body) transmitted by the smartphone terminal 70 in the access request is, for example, data "100" expressed in numbers.

Regarding function 2, the data (body) sent by the smartphone terminal 70 in the access request has the input data format (input) as "String", so for example, the data expressed in characters "foobar" It is.

Next, the protocol X conversion process shown in step (5) is performed. From step (4) to step (5), the determining unit 115 determines the access destination of the smartphone terminal 70 based on the URL of the access request, and the information selecting unit 116 determines the access destination determined by the determining unit 115. Using the previous device name and function name, select device access information corresponding to the access destination device name and function name. Further, the conversion rule selection unit 117 selects a protocol conversion rule associated with the device access information selected by the information selection unit 116.

Then, the protocol conversion processing unit 118 performs protocol conversion of the data based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. The protocol conversion processing unit 118 outputs data "0A020064" for function 1 according to the protocol conversion rules shown in FIG.

Further, the protocol conversion processing unit 118 outputs data "0B06666f6f626172" according to the protocol conversion rule for function 2 of device A. The protocol conversion process for function 2 differs from the protocol conversion process for function 1 in that the input data format (input) is "String" and the data size is 6 bytes. Note that the protocol conversion rules are the same.
Therefore, the first byte is the command "0B", the second byte is the data size "06", and the third to eighth bytes are "666f6f626172", resulting in data "0B06666f6f626172".

Then, as shown in step (6), the communication processing unit 119 receives data "0A020064" whose protocol has been converted for function 1 of device A, and data in ASCII code format "0B06666f6f626172" whose protocol has been converted for function 2 of device A. " is sent to device A. Since these data are commands for functions 1 and 2 of device A, functions 1 and 2 of device A perform predetermined operations in accordance with the commands.

Next, the case where there are multiple devices will be described using FIG. 12.

In FIG. 12, only the GW 100, the smartphone terminal 70, and devices A and B are shown, and the others are omitted.

As shown in the device access information, device A has function 1 and device B has function 1. Function 1 of device A is the same as that in FIG. 11, so the description thereof will be omitted here.

For function 1 of device B, the protocol is X, the command is "10", and the input data format (input) and output data format (output) are both "Number". That is, the functions 1 of devices A and B have the same protocol, different commands, the same input data format (input), and different output data formats (output).

First, as shown in step (1), when device access information for devices A and B is registered separately in the GW 100, the information acquisition unit 112 stores the device access information for devices A and B in the memory 120. do. Note that at this time, the information acquisition unit 112 associates the device access information with data representing the protocol conversion rule for devices A and B and stores them in the memory 120 separately.

Next, as shown in step (2), the information generation unit 113 generates common access information from the device access information. The common access information is generated separately for function 1 of device A and function 1 of device B. The common access information for function 1 of device A is the same as that shown in FIG.

The common access information for function 1 of device B has the URL "http://ZZZ/DevB/Func1", and the input data format (input) and output data format (output) are both "Number". .

In this way, the common access information for function 1 of device A and the common access information for function 1 of device B are written in a common format. The type of protocol and the command are information unique to Function 1 of Device A and Function 1 of Device B, and are difficult to describe in a common format, so they are not included in the common access information.

When the information generating unit 113 generates such common access information from the device access information, it stores the device access information and the common access information in association with each other separately for function 1 of device A and function 1 of device B. do.

Next, as shown in step (3), the information providing unit 114 provides common access information regarding function 1 of device A and function 1 of device B to the smartphone terminal 70.

Next, as shown in step (4), the smartphone terminal 70 requests access to function 1 of device A and function 1 of device B based on the URL included in the common access information. Here, for convenience of explanation, access requests to function 1 of device A and function 1 of device B are shown in parallel, but this does not mean that they are performed at the same time, and they can be performed separately.

The data (body) sent by the smartphone terminal 70 in the access request is a numeric value, as an example, since the input data format (input) for function 1 of device A and function 1 of device B is "Number". It is assumed that the data is "100" expressed by .

Next, the protocol X conversion process shown in step (5) is performed. From step (4) to step (5), the determining unit 115 determines the access destination of the smartphone terminal 70 based on the URL of the access request, and the information selecting unit 116 determines the access destination determined by the determining unit 115. Using the previous device name and function name, select device access information corresponding to the access destination device name and function name. Such processing is performed separately for function 1 of device A and function 1 of device B.

Further, the conversion rule selection unit 117 selects a protocol conversion rule associated with the device access information selected by the information selection unit 116. Such processing is performed separately for function 1 of device A and function 1 of device B. Here, as an example, since the protocols of function 1 of device A and function 1 of device B are both the same protocol X, a common protocol conversion rule is selected for function 1 of device A and function 1 of device B. be done.

Then, the protocol conversion processing unit 118 performs protocol conversion of the data based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. The protocol conversion processing unit 118 outputs data "0A020064" for function 1 of device A according to the protocol conversion rules shown in FIG.

Further, the protocol conversion processing unit 118 outputs data "10020064" according to the protocol conversion rule for function 1 of device B. Here, as an example, the protocol conversion rule for input data of function 1 of device B is the same as the protocol conversion rule for input data of function 1 of device A, except for the command.

Therefore, for function 1 of device B, the first byte is the command "10", the second byte is the data size "02", the third and fourth bytes are "0064", and the data is "10020064". converted.

Then, as shown in step (6), the communication processing unit 119 transmits to device A the data "0A020064" whose protocol has been converted for function 1 of device A, and the data "0A020064" whose protocol has been converted about function 1 of device B. 10020064" to device B. Since these data are commands for function 1 of devices A and B, function 1 of devices A and B performs a predetermined operation according to the command.

Next, a case where there are multiple devices and different protocols will be described using FIG. 13.

In FIG. 13, only the GW 100, the smartphone terminal 70, and devices A and C are shown, and the others are omitted.

As shown in the device access information, device A has function 1 and device C has function 1. Function 1 of device A is the same as that in FIG. 11, so the description thereof will be omitted here.

Function 1 of device C is that the protocol is Y, the input data format is {"func":"A","data":<INPUT>}, the input data format (input) is "Number", and the output data format is (output) is "String".

That is, the functions 1 of devices A and C have different protocols, and the format of input data (input) and the format of output data (output) are the same. Further, the device access information of function 1 of device A includes commands, but function 1 of device C does not include commands, but is completely different in that it includes the format of input data.

Note that the input data format {"func":"A","data":<INPUT>} represents the protocol conversion rule of entering decimal data in the <INPUT> field, and is JSON (JavaScript Object Notation) format data.

First, as shown in step (1), when device access information for devices A and C is registered separately in the GW 100, the information acquisition unit 112 stores the device access information for devices A and C in the memory 120. do. Note that at this time, the information acquisition unit 112 associates the device access information and data representing the protocol conversion rule with each other for devices A and C and stores them in the memory 120.

Next, as shown in step (2), the information generation unit 113 generates common access information from the device access information. The common access information is generated separately for function 1 of device A and function 1 of device C. The common access information for function 1 of device A is the same as that shown in FIG.

The common access information for function 1 of device C is that the URL is "http://ZZZ/DevC/Func1", the input data format (input) is "Number", and the output data format (output) is "String". "is.

In this way, the common access information for function 1 of device A and the common access information for function 1 of device C are written in a common format. The difference in the format of the command and input data is unique information between function 1 of device A and function 1 of device C, and is difficult to describe in a common format, so it is not included in the common access information.

When the information generation unit 113 generates such common access information from the device access information, it stores the device access information and the common access information in association with each other separately for function 1 of device A and function 1 of device C. do.

Next, as shown in step (3), the information providing unit 114 provides common access information regarding function 1 of device A and function 1 of device C to the smartphone terminal 70.

Next, as shown in step (4), the smartphone terminal 70 requests access to function 1 of device A and function 1 of device C based on the URL included in the common access information. Here, for convenience of explanation, access requests to function 1 of device A and function 1 of device C are shown in parallel, but this does not mean that they are performed at the same time, and they can be performed separately.

The data (body) sent by the smartphone terminal 70 in the access request is a numeric value, as an example, since the input data format (input) for function 1 of device A and function 1 of device C is "Number". It is assumed that the data is "100" expressed by .

Next, the protocol X conversion process shown in step (5) is performed. From step (4) to step (5), the determining unit 115 determines the access destination of the smartphone terminal 70 based on the URL of the access request, and the information selecting unit 116 determines the access destination determined by the determining unit 115. Using the previous device name and function name, select device access information corresponding to the access destination device name and function name. Such processing is performed separately for function 1 of device A and function 1 of device C.

Further, the conversion rule selection unit 117 selects a protocol conversion rule associated with the device access information selected by the information selection unit 116. Such processing is performed separately for function 1 of device A and function 1 of device C. Here, as an example, the protocol of function 1 of device A is X, and the protocol of function 1 of device C is Y, so the protocol conversion rule for protocol X is selected for function 1 of device A, and For function 1, the protocol conversion rule for protocol Y is selected.

Then, the protocol conversion processing unit 118 performs protocol conversion of the data in the protocol X conversion process based on the device access information selected by the information selection unit 116 and the protocol conversion rule selected by the conversion rule selection unit 117. Further, the protocol conversion processing unit 118 performs protocol conversion of data in the protocol Y conversion process based on the protocol conversion rule included in the device access information selected by the information selection unit 116.

The protocol conversion processing unit 118 outputs data "0A020064" for function 1 of device A according to the protocol conversion rules shown in FIG.

Further, the protocol conversion processing unit 118 outputs data {"func":"A","data":100} according to the protocol conversion rule for function 1 of device C. The protocol conversion rule for function 1 of device C is to enter decimal data in <INPUT> of {"func":"A","data":<INPUT>}, which is the input data format. be.

Therefore, function 1 of device C will be converted to data {"func":"A","data":100}.

Then, as shown in step (6), the communication processing unit 119 sends the data "0A020064" whose protocol has been converted for function 1 of device A to device A, and the data whose protocol has been converted for function 1 of device C { "func":"A","data":100} is sent to device C. Since these data are commands for function 1 of devices A and C, function 1 of devices A and C performs a predetermined operation according to the command.

As described above, according to the embodiment, common access information is generated by extracting parts that can be described in a common format from device access information that is unique information of device A, and A request for access to the device is made based on the access information.

The GW 100 stores the device access information and the protocol conversion rule in association with each other in the memory 120, and also stores the device access information and the common access information in the memory 120 in association with the device name and the function name.

Then, when the smartphone terminal 70 requests access to the device using the URL included in the common access information, the GW 100 requests device access information using the device name and function name included in the URL for protocol X. is selected, and the protocol conversion process for the data included in the access request is performed using the protocol conversion rule associated with the device access information and the device access information. Further, for protocol Y, the GW 100 selects device access information using the device name and function name included in the URL, and uses the protocol conversion rule included in the device access information to convert the protocol of the data included in the access request. Perform the conversion process. After this, the GW 100 transmits the data that has been subjected to the protocol conversion process to the device.

Therefore, it is possible to provide a GW 100 and an information processing program that can easily perform data protocol conversion.

Conventionally, there is a system in which a gateway (GW) is used as a relay between a control unit such as a smartphone terminal and a plurality of devices. In such a system, when the GW relays data between the control unit and multiple devices, the communication protocols of the multiple devices may differ, or the data format may differ depending on the function of the device. In some cases, data conversion processing cannot be performed easily.

Furthermore, in such a case, there is an existing system in which an agent is installed in each device and the agent in each device performs a process of converting the protocol to a common protocol between the GW and the plurality of devices.

However, in such a system, if the protocols of the devices are different or if the data formats of the devices are different, it is difficult to standardize the agents and it is necessary to develop them separately.

In contrast, the GW 100 of the embodiment utilizes common access information and standardizes protocol conversion rules even if the data formats of the devices are different, as long as the protocols of the devices are the same. Through this process, protocol conversion can be made common. Furthermore, this eliminates the need to develop a program such as an agent for each device with a different data format.

Further, even if the protocols of the devices are different, the GW 100 of the embodiment can select a protocol conversion rule according to the protocol based on the common access information, so that the protocol conversion can be easily performed.

In addition, although the above description has been made of a form in which there are one or two devices and one or two functions, there may be three or more devices, and each device has three or more functions. It's okay. In either case, device access information including a URL including the device name and function name, the input data format (input), and the output data format (output) is generated, and the device name and function name included in the URL are generated. What is necessary is to select the common access information from the function name and select the protocol conversion rule associated with the common access information. In this way, data protocol conversion processing can be easily performed regardless of whether the protocol, input data format (input), and output data format (output) are the same or not.

In addition, above, the common access information includes the format of the input data (input) and the format of the output data (output), but the common access information includes the format of the input data (input) and the format of the output data ( output) may not be included. For example, in a case where the request data can be simply incorporated into the data after the protocol conversion process, regardless of the format of the input data (input) and the format of the output data (output), the common access information is It is not necessary to include the format of input data (input) and/or the format of output data (output). Further, the data format may not be necessary except for either the input data format (input) or the output data format (output).

Furthermore, the above has described a form in which data in which device names and function names are associated with device access information is created as shown in FIG. 8 . However, instead of the data shown in FIG. 8, data may be created in which common access information in which a device name and function name are embedded is associated with device access information. By using the common access information in which the device name and function name are embedded, the common access information can be specified from the device name and function name included in the URL of the access request, and furthermore, the device access information associated with the common access information can be specified. It is from.

Furthermore, the above description describes a form in which the data in which device access information and protocol conversion rules are associated, shown in FIG. 7, and the data in which device name and function name are associated with device access information, shown in FIG. 8, are separate data. did. However, the data shown in FIG. 7 in which the device access information is associated with the protocol conversion rule, and the data shown in FIG. 8 in which the device name and function name are associated with the device access information may be created as one data.

Although the information processing apparatus and information processing program according to the exemplary embodiments of the present invention have been described above, the present invention is not limited to the specifically disclosed embodiments, and the present invention is not limited to the specifically disclosed embodiments. Various modifications and changes are possible without departing from the scope.
Regarding the above embodiments, the following additional notes are further disclosed.
(Additional note 1)
Information acquisition for acquiring device access information specific to a device connected via the second network, among data used for protocol conversion processing between the first protocol on the first network side and the second protocol on the second network side. Department and
a first storage unit that stores device access information acquired by the information acquisition unit and information representing an access destination included in the device access information in association with each other;
an information generation unit that generates common access information that represents the access destination of the acquired device access information in a common format for a plurality of the devices;
an information providing unit that provides the generated common access information to a control unit connected to the first network;
a determination unit that determines an access destination to be accessed by the control unit via the first network and the second network based on the provided common access information;
an information selection unit that selects device access information corresponding to the access destination determined by the determination unit from device access information stored in the first storage unit;
Performing protocol conversion of first data received from the control unit via the first network using protocol conversion rules for the first protocol and the second protocol specified by device access information selected by the information selection unit. An information processing device including a protocol conversion processing unit.
(Additional note 2)
a second storage unit that stores the device access information and information representing the protocol conversion rule in association with each other;
further comprising a conversion rule selection unit that selects a protocol conversion rule associated with device access information selected by the information selection unit from among the protocol conversion rules stored in the second storage unit;
The information processing device according to supplementary note 1, wherein the protocol conversion processing unit performs protocol conversion of first data received from the control unit via the first network using a protocol conversion rule selected by the conversion rule selection unit.
(Additional note 3)
The information processing device according to appendix 1 or 2, wherein the protocol conversion rule represents a common protocol conversion rule for a plurality of access destinations having the same second protocol.
(Additional note 4)
The information processing apparatus according to any one of Supplementary Notes 1 to 3, further including a first data transmitting section that transmits first data subjected to protocol conversion by the protocol conversion processing section to the device.
(Appendix 5)
The common access information is information representing the data format of the first data in addition to the access destination,
The information processing device according to any one of Supplementary Notes 1 to 4, wherein the control unit transmits the first data based on the data format via the first network when accessing the access destination.
(Appendix 6)
6. The information processing apparatus according to any one of appendices 1 to 5, wherein the protocol conversion processing unit performs protocol conversion of second data received from the device via the second network in the protocol conversion process.
(Appendix 7)
The information processing device according to supplementary note 6, further including a second data transmitting unit that transmits second data subjected to protocol conversion by the protocol conversion processing unit to the control unit.
(Appendix 8)
8. The information processing apparatus according to any one of appendices 1 to 7, wherein the information representing the access destination is information representing the type and function of the device.
(Appendix 9)
9. The information processing device according to any one of appendices 5 to 8, wherein the common access information is information representing a data format of the second data in addition to the access destination.
(Appendix 10)
The information processing device according to appendix 5 or 9, wherein the data format of the first data or the second data is information indicating whether it is a numerical value or a character.
(Appendix 11)
Obtaining device access information specific to a device connected via the second network among data used for protocol conversion processing between a first protocol on the first network side and a second protocol on the second network side. ,
storing the acquired device access information in a storage unit in association with information representing an access destination included in the device access information;
Generating common access information that represents the access destination of the acquired device access information in a common format for a plurality of the devices;
providing the generated common access information to a control unit connected to the first network;
determining an access destination to be accessed by the control unit via the first network and the second network based on the provided common access information;
selecting device access information corresponding to the determined access destination from device access information stored in the storage unit;
Processing comprising performing protocol conversion of first data received from the control unit via the first network using protocol conversion rules for the first protocol and the second protocol specified by the selected device access information. An information processing program that causes a computer to execute.

1 System 50 FAN
60 Network 70 Smartphone terminal A, B Device 100 GW
110 Control device 111 Main control unit 112 Information acquisition unit 113 Information generation unit 114 Information provision unit 115 Discrimination unit 116 Information selection unit 117 Conversion rule selection unit 118 Protocol conversion processing unit 119 Communication processing unit 120 Memory

Claims (7)

Information acquisition for acquiring device access information specific to a device connected via the second network, among data used for protocol conversion processing between the first protocol on the first network side and the second protocol on the second network side. Department and
a first storage unit that stores device access information acquired by the information acquisition unit and information representing an access destination included in the device access information in association with each other;
an information generation unit that generates common access information that represents the access destination of the acquired device access information in a common format for a plurality of the devices;
an information providing unit that provides the generated common access information to a control unit connected to the first network;
a determination unit that determines an access destination to be accessed by the control unit via the first network and the second network based on the provided common access information;
an information selection unit that selects device access information corresponding to the access destination determined by the determination unit from device access information stored in the first storage unit;
protocol conversion of first data received from the control unit via the first network using protocol conversion rules for the first protocol and the second protocol specified by device access information selected by the information selection unit; a protocol conversion processing unit that performs protocol conversion of second data received from the device via the second network ;
The information representing the access destination is information representing the device name and function name of the device,
The device access information includes information representing the device name, the function name, the data format of the first data, and the data format of the second data,
The common access information is information representing the data format of the first data and the data format of the second data in addition to the access destination,
The information generation unit generates the common access information based on the device name, the function name, the data format of the first data, and the data format of the second data, which are included in the device access information. , information processing equipment. a second storage unit that stores the device access information and information representing the protocol conversion rule in association with each other;
further comprising a conversion rule selection unit that selects a protocol conversion rule associated with device access information selected by the information selection unit from among the protocol conversion rules stored in the second storage unit;
The information processing apparatus according to claim 1, wherein the protocol conversion processing unit performs protocol conversion of first data received from the control unit via the first network using a protocol conversion rule selected by the conversion rule selection unit. . 3. The information processing apparatus according to claim 1, wherein the protocol conversion rule represents a common protocol conversion rule for a plurality of access destinations having the same second protocol. 4. The information processing apparatus according to claim 1, further comprising a first data transmitting section that transmits first data subjected to protocol conversion by the protocol conversion processing section to the device. 5. The control unit according to claim 1, wherein the control unit transmits the first data based on the data format of the first data via the first network when accessing the access destination. Information processing device. The information processing apparatus according to any one of claims 1 to 5 , further comprising a second data transmitter configured to transmit second data subjected to protocol conversion by the protocol conversion processing unit to the control unit. Obtaining device access information specific to a device connected via the second network among data used for protocol conversion processing between a first protocol on the first network side and a second protocol on the second network side. ,
storing the acquired device access information in a storage unit in association with information representing an access destination included in the device access information;
Generating common access information that represents the access destination of the acquired device access information in a common format for a plurality of the devices;
providing the generated common access information to a control unit connected to the first network;
determining an access destination to be accessed by the control unit via the first network and the second network based on the provided common access information;
selecting device access information corresponding to the determined access destination from device access information stored in the storage unit;
protocol conversion of first data received from the control unit via the first network using protocol conversion rules for the first protocol and the second protocol specified by the selected device access information; and performing a protocol conversion of second data received from the device via the
The information representing the access destination is information representing the device name and function name of the device,
The device access information includes information representing the device name, the function name, the data format of the first data, and the data format of the second data,
The common access information is information representing the data format of the first data and the data format of the second data in addition to the access destination,
Generating the common access information includes generating the common access information based on the device name, the function name, the data format of the first data, and the data format of the second data, which are included in the device access information. An information processing program that causes a computer to perform processing that generates information .

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