WO2018131080A1

WO2018131080A1 - Data reception apparatus, data transmission apparatus, data reception method, data transmission method, data reception program, and data transmission program

Info

Publication number: WO2018131080A1
Application number: PCT/JP2017/000511
Authority: WO
Inventors: 清人宮▲崎▼
Original assignee: 三菱電機株式会社
Priority date: 2017-01-10
Filing date: 2017-01-10
Publication date: 2018-07-19

Abstract

A communication unit (1008) as an attribute notification information reception unit receives attribute notification information that includes attribute information of transmission data transmitted by a data collection apparatus and that has a smaller data size than the transmission data. A communication band prediction unit (1002) predicts the availability of a communication band in a communication channel used for communication with the data collection apparatus. A reception schedule generation unit (1001) generates a reception schedule of the transmission data on the basis of the attribute information of the transmission data included in the attribute notification information and the availability of the communication band predicted by the communication band prediction unit (1002). The communication unit (1008) as a data reception unit receives the transmission data from the data collection apparatus in accordance with the reception schedule generated by the reception schedule generation unit (1001).

Description

Data receiving apparatus, data transmitting apparatus, data receiving method, data transmitting method, data receiving program, and data transmitting program

The present invention relates to data transmission / reception.

Patent Document 1 discloses that when an information value changes inside a network device, the network device transmits a notification including the changed information value to the network management device.

Japanese Patent Laid-Open No. 2001-197078

In Patent Document 1, when the information value changes in the network device, the network device uses the communication bandwidth of the communication line between the network device and the network management device when the notification including the changed information value is transmitted. Approximate. And when the usage-amount obtained by rough estimation exceeds the threshold value, the network device suspends transmission of the notification including the changed information value. As described above, in Patent Document 1, transmission of data is performed when the usage amount of the communication band slightly exceeds the threshold regardless of data attributes such as data whose delay is not allowed and data having high importance. Deferred.
Therefore, in patent document 1, there exists a subject that appropriate data transmission according to the attribute of data is not performed.

The present invention has one of the main purposes to solve such problems. That is, the main object of the present invention is to enable the data receiving apparatus to appropriately receive data from the data transmitting apparatus according to the data attribute without squeezing the communication band.

The data receiving apparatus according to the present invention is:
An attribute notification information receiving unit for receiving attribute notification information having a data size smaller than the transmission data, including attribute information of transmission data transmitted by the data transmission device;
A communication band predicting unit that predicts a free state of a communication band in a communication line used for communication with the data transmission device;
A reception schedule generation unit that generates a reception schedule of the transmission data based on the attribute information of the transmission data included in the attribute notification information and the availability of the communication band predicted by the communication band prediction unit;
A data receiving unit that receives the transmission data from the data transmission device in accordance with the reception schedule generated by the reception schedule generation unit.

In the present invention, the data reception device generates a transmission data reception schedule based on the attribute information of the transmission data included in the attribute notification information and the availability of the communication band in the communication line, and the data transmission device according to the generated reception schedule Receive transmission data from. Therefore, according to the present invention, the data reception device can generate an appropriate reception schedule according to the attribute of the transmission data, and appropriately receive data from the data transmission device without squeezing the communication band. be able to.

1 is a diagram illustrating a configuration example of a data collection system according to Embodiment 1. FIG. FIG. 3 is a diagram illustrating a hardware configuration example of the data analysis apparatus according to the first embodiment. FIG. 3 is a diagram illustrating a hardware configuration example of the data collection device according to the first embodiment. FIG. 3 is a diagram illustrating a functional configuration example of the data analysis apparatus according to the first embodiment. FIG. 3 is a diagram illustrating a functional configuration example of the data collection device according to the first embodiment. 5 is a flowchart showing an operation example of the data analysis apparatus according to the first embodiment. 5 is a flowchart showing an operation example of the data collection apparatus according to the first embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments and drawings, the same reference numerals denote the same or corresponding parts.

Embodiment 1 FIG.
*** Explanation of configuration ***
FIG. 1 shows a configuration example of a data collection system 100 according to the present embodiment.
The data collection system 100 includes a data analysis device 10, a data collection device 20a, a data collection device 20b, and a data collection device 20c.
The data collection device 20a, the data collection device 20b, and the data collection device 20c are connected by a field network 21.
The data collection device 20a is connected to the data analysis device 10 via the information network 11. The information network 11 is a communication line that connects the data analysis device 10 and the data collection device 20a.
In FIG. 1, only the data collection device 20 a is connected to the data analysis device 10, but the data collection device 20 b and the data collection device 20 c may be connected to the data analysis device 10.
The data collection device 20a collects data from a device connected to the data collection device 20a. In addition, the data collection device 20b collects data from a device connected to the data collection device 20b. In addition, the data collection device 20c collects data from a device connected to the data collection device 20c. The device is, for example, a production facility such as a PLC (Programmable Logic Controller) or a sensor.
The data collection device 20b and the data collection device 20c transmit the data collected from each device to the data collection device 20a using the field network 21.
The data collection device 20a transmits the data collected from the device and the data received from the data collection device 20b and the data collection device 20c to the data analysis device 10.
Real-time communication is performed between the data analysis device 10 and the data collection device 20a. That is, the data collection device 20a transmits the data collected from the device and the data received from the data collection device 20b and the data collection device 20c to the data analysis device 10 in real time.
On the other hand, the data collection device 20a may transmit data with low real-time properties to the data analysis device 10. Data with low real-time properties occurs irregularly and has a large capacity. Hereinafter, such a large amount of data that occurs irregularly with low real-time characteristics is referred to as irregular data. The irregular data is assumed to be used for analyzing the cause of an abnormality when, for example, an abnormality occurs in a production facility. For example, input / output data before and after the occurrence of an abnormality, a memory image of a program, and the like are transmitted as irregular data from the data collection device 20a to the data analysis device 10. The data analyzer 10 analyzes the irregular data as soon as the irregular data is received. For example, the size of the irregular data may be 1 megabyte to several hundred megabytes or more. For this reason, if the data collection device 20a transmits irregular data during real-time communication, the communication band of the information network 11 is insufficient, and a delay occurs in real-time communication. On the other hand, in transmission of irregular data, a slight time lag is allowed.
Hereinafter, a method for transmitting irregular data from the data collection device 20a to the data analysis device 10 without reducing the communication band of real-time communication will be described.
The data analysis device 10 corresponds to a data reception device. Operations performed by the data analysis apparatus 10 correspond to a data reception method and a data reception program.
The data collection device 20a corresponds to a data transmission device. The operations performed by the data collection device 20a correspond to a data transmission method and a data transmission program. The irregular data transmitted by the data collection device 20a corresponds to transmission data.

FIG. 2 shows a hardware configuration example of the data analysis apparatus 10.
As shown in FIG. 2, the data analysis device 10 includes an information communication interface 101, a processor 102, a storage device 103, and a bus 104. The information communication interface 101, the processor 102, and the storage device 103 are connected by a bus 104.
The data analysis device 10 is a computer.
The information communication interface 101 is an interface for communicating with the data collection device 20 a via the information network 11.
The processor 102 executes a program that implements the functions shown in FIG.
The storage device 103 stores the reference identifier and irregular data transmitted from the data collection device 20a. The storage device 103 stores a program that realizes the functions shown in FIG.

FIG. 3 shows a hardware configuration example of the data collection device 20a.
As shown in FIG. 3, the data collection device 20 a includes a field communication interface 201, a processor 202, a storage device 203, an input / output interface 204, an information communication interface 205, and a bus 206. The field communication interface 201, the processor 202, the storage device 203, the input / output interface 204, and the information communication interface 205 are connected by a bus 206.
The data collection device 20a is a computer.
The field communication interface 201 is an interface for communicating with the data collection device 20b and the data collection device 20c via the field network 21.
The processor 202 executes a program that implements the functions shown in FIG.
The storage device 203 stores a program that implements the functions shown in FIG.
The input / output interface 204 is an interface for communicating with a data collection target device.
The information communication interface 205 is an interface for communicating with the data analysis apparatus 10 via the information network 11. The data collection device 20a requires the information communication interface 205, but the data collection device 20b and the data collection device 20c may not include the information communication interface 205. That is, the data collection device 20b and the data collection device 20c have the same hardware configuration as the data collection device 20a except for the information communication interface 205. The data collection device 20b and the data collection device 20c may include the information communication interface 205.

FIG. 4 shows a functional configuration example of the data analysis apparatus 10.
As shown in FIG. 4, the data analysis apparatus 10 includes a reception schedule generation unit 1001, a communication band prediction unit 1002, a data analysis unit 1003, a reference identifier analysis unit 1004, a data transmission request unit 1005, a communication band confirmation unit 1006, and a data storage. Unit 1007, communication unit 1008, and storage unit 1009.
The reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage unit 1007, and the communication unit 1008 are realized by programs. . When the processor 102 executes these programs, the reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage Functions of the unit 1007 and the communication unit 1008 are realized.
In FIG. 4, the processor 102 includes a reception schedule generation unit 1001, a communication band prediction unit 1002, a data analysis unit 1003, a reference identifier analysis unit 1004, a data transmission request unit 1005, a communication band confirmation unit 1006, a data storage unit 1007, and a communication unit. A state in which a program for realizing the function 1008 is being executed is schematically shown.

The communication unit 1008 receives the reference identifier from the data collection device 20a via the information communication interface 101. Then, the communication unit 1008 transfers the received reference identifier to the reference identifier analysis unit 1004. The reference identifier is information including attribute information of irregular data transmitted by the data collection device 20a. The reference identifier is information having a data size smaller than that of irregular data so as not to compress the communication band. The size of the reference identifier is, for example, about several bytes to several tens of bytes. In the reference identifier, as irregular data attribute information, for example, the occurrence time of irregular data (time stamp, etc.), the source of irregular data (identification information of the device of the irregular data source, etc.), irregular data, etc. And / or the data size of irregular data. The reference identifier corresponds to attribute notification information.
The communication unit 1008 receives irregular data from the data collection device 20a via the information communication interface 101 in accordance with the reception schedule generated by the reception schedule generation unit 1001.
Then, the communication unit 1008 transfers the received irregular data to the data storage unit 1007.
The communication unit 1008 corresponds to an attribute notification information receiving unit and a data receiving unit. The operations performed by the communication unit 1008 correspond to the attribute notification information reception process and the data reception process.

The reference identifier analysis unit 1004 acquires a reference identifier from the communication unit 1008.
Then, the reference identifier analysis unit 1004 analyzes the reference identifier. More specifically, the reference identifier analysis unit 1004 acquires the attribute information of irregular data (such as the occurrence time of irregular data) from the encoded reference identifier. That is, the reference identifier analysis unit 1004 decodes the encoded reference identifier and acquires attribute information of irregular data.
Further, the reference identifier analysis unit 1004 notifies the reception schedule generation unit 1001 of the attribute information of the acquired irregular data.

The communication band confirmation unit 1006 periodically measures the communication band of the information network 11. Then, the communication band confirmation unit 1006 notifies the communication band prediction unit 1002 of the measured communication band of the information network 11.

The communication band predicting unit 1002 predicts the availability of the communication band in the information network 11 based on the communication band of the information network 11 notified from the communication band confirming unit 1006.
Then, the communication band prediction unit 1002 notifies the reception schedule generation unit 1001 of the prediction result.
The operation performed by the communication band prediction unit 1002 corresponds to a communication band prediction process.

The reception schedule generation unit 1001 receives irregular data based on the attribute information of irregular data notified from the reference identifier analysis unit 1004 and the availability of the communication band of the information network 11 predicted by the communication band prediction unit 1002. Generate a schedule.
More specifically, the reception schedule generation unit 1001 determines the priority of irregular data based on the attribute information of irregular data notified from the reference identifier analysis unit 1004. And the reception schedule production | generation part 1001 produces | generates the reception schedule of irregular data based on the priority of irregular data and the free condition of a communication band.
The operation performed by the reception schedule generation unit 1001 corresponds to reception schedule generation processing.

The data transmission request unit 1005 requests the data collection device 20a to transmit irregular data according to the reception schedule generated by the reception schedule generation unit 1001.
More specifically, the data transmission request unit 1005 collects a transmission request message (hereinafter also simply referred to as a transmission request) requesting transmission of irregular data according to the reception schedule via the communication unit 1008 and the information communication interface 101. Send to device 20a.
The communication unit 1008 receives irregular data transmitted from the data collection device 20a in response to a request from the data transmission request unit 1005.

The data storage unit 1007 acquires irregular data from the communication unit 1008 and stores the acquired irregular data in the storage unit 1009.

The storage unit 1009 stores irregular data. The storage unit 1009 is realized by the storage device 103.

When the storage of the irregular data in the storage unit 1009 is completed, the data analysis unit 1003 reads the irregular data from the storage unit 1009 and analyzes the irregular data.

FIG. 5 shows a functional configuration example of the data collection device 20a.
As illustrated in FIG. 5, the data collection device 20a includes a data reading unit 2001, a reference identifier generation unit 2002, a data storage unit 2003, a communication unit 2004, a data acquisition unit 2005, and a storage unit 2006.
The data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 are realized by a program. When the processor 202 executes these programs, the functions of the data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 are realized.
FIG. 5 schematically illustrates a state in which the processor 202 is executing a program that implements the functions of the data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005. Yes.

The data acquisition unit 2005 collects data via the input / output interface 204 and the field communication interface 201. Data collected by the data acquisition unit 2005 includes real-time data and irregular data. Hereinafter, an operation of the data collection device 20a when the data acquisition unit 2005 receives irregular data will be described.
The data acquisition unit 2005 transfers the received irregular data to the data storage unit 2003.

The data storage unit 2003 acquires irregular data from the data acquisition unit 2005, and stores the acquired irregular data in the storage unit 2006.

The storage unit 2006 stores irregular data. The storage unit 2006 is realized by the storage device 203.

The reference identifier generation unit 2002 generates a reference identifier for irregular data stored in the storage unit 2006. Then, the reference identifier generation unit 2002 transfers the generated reference identifier to the communication unit 2004.
The reference identifier generation unit 2002 corresponds to an attribute notification information generation unit. In addition, the operation performed by the reference identifier generation unit 2002 corresponds to attribute notification information generation processing.

The communication unit 2004 transmits the reference identifier generated by the reference identifier generation unit 2002 to the data analysis apparatus 10 via the information communication interface 205.
Further, the communication unit 2004 transmits the reference identifier to the data analysis device 10 and then transmits the irregular data to the data analysis device 205 via the information communication interface 205 when the data analysis device 10 requests transmission of the irregular data. 10 to send. More specifically, when the communication unit 2004 receives a transmission request message from the data analysis device 10, the communication unit 2004 requests the data reading unit 2001 to read irregular data. Then, the communication unit 2004 transmits the irregular data read by the data reading unit 2001 to the data analysis device 10.
The communication unit 2004 corresponds to an attribute notification information transmission unit and a data transmission unit. The operation by the communication unit 2004 corresponds to attribute notification information transmission processing and data transmission processing.

When the communication unit 2004 requests reading of irregular data, the data reading unit 2001 reads irregular data from the storage unit 2006 and transfers the read irregular data to the communication unit 2004.
*** Explanation of operation ***
Next, the operation in the data collection system 100 according to the present embodiment will be described.
First, an outline of the operation in the data collection system 100 will be described.

When the irregular data occurs, the data collection device 20a generates a reference identifier and transmits the generated reference identifier to the data analysis device 10.
For example, when irregular data occurs in either the device connected to the data collection device 20b or the device connected to the data collection device 20c, the data collection device 20b or the data collection device 20c Data is transmitted to the data collection device 20a. The data collection device 20a generates a reference identifier when irregular data is received from the data collection device 20b or the data collection device 20c.
In addition, when irregular data is generated in a device connected to the data collection device 20a, the data collection device 20a generates a reference identifier.
Then, the data collection device 20a transmits the reference identifier to the data analysis device 10. As described above, the data size of the reference identifier is as small as several bytes to several tens of bytes, and the data collection device 20a can transmit the reference identifier even during real-time communication.

The data analysis device 10 receives the reference identifier from the data collection device 20a. In addition, the data analysis device 10 predicts the availability of the communication band.
Furthermore, the data analysis device 10 determines the priority of irregular data whose attribute information is included in the reference identifier from the reference identifier. Then, the data analysis apparatus 10 generates an irregular data reception schedule based on the availability of the communication band and the priority of the irregular data. The priority is a priority related to the transmission order of irregular data. The data analysis apparatus 10 generates a reception schedule so that transmission is performed in order from irregular data that is necessary as early as possible and can be transmitted within a realistic time. In addition, the data analysis device 10 transmits irregular data from the data collection device 20a using the free bandwidth of the information network 11 that is generated when the communication frequency of the real-time communication decreases at the timing when the information network 11 does not require real-time communication. To generate a reception schedule. Specifically, a reception schedule is generated so that irregular data is transmitted by utilizing the timing at which production is interrupted. This makes it possible to collect a large amount of irregular data without affecting real-time communication.

When the reception timing determined by the reception schedule arrives, the data analysis device 10 transmits a transmission request message to the data collection device 20a.
When the data collection device 20 a receives the transmission request message from the data analysis device 10, the data collection device 20 a transmits irregular data to the data analysis device 10.
As described above, irregular data can be transmitted from the data collection device 20a to the data analysis device 10 without squeezing the communication band of the communication line (information network 11) between the data analysis device 10 and the data collection device 20a. That is, irregular data can be transmitted from the data collection device 20a to the data analysis device 10 without affecting the real-time communication between the data analysis device 10 and the data collection device 20a.

Next, an operation example of the data analysis apparatus 10 will be described with reference to FIG.

In step S01, the communication unit 1008 receives a reference identifier of irregular data from the data collection device 20a. Then, the communication unit 1008 transfers the received reference identifier to the reference identifier analysis unit 1004.
As described above, the reference identifier is information that can be used to determine the priority of irregular data. The reference identifier must be able to uniquely identify irregular data. The reference identifier is composed of several bytes to several tens of bytes so that it can be transmitted in a small communication band.
Further, the reference identifier includes, for example, attribute information of irregular data as described below.
・ Occurrence timing information of irregular data (time stamp etc.)
・ Identification information of the device that is the source of the irregular data ・ Type information of the irregular data ・ Size information of the irregular data In addition, depending on the occurrence pattern of the irregular data, the irregular data cannot be uniquely identified only by the above attribute information. In some cases. In this case, for example, by adding a hash value of irregular data to the reference identifier, the irregular data can be uniquely specified by the reference identifier.

In step S02, the reference identifier analysis unit 1004 analyzes the reference identifier.
Here, the analysis means that the reference identifier analysis unit 1004 extracts attribute information of irregular data from the reference identifier. For example, the reference identifier analysis unit 1004 extracts encoded attribute information from a reference identifier that is a frame, and decodes the attribute information.
The reference identifier analysis unit 1004 transfers the attribute information of the extracted irregular data to the reception schedule generation unit 1001.

In step S03, the communication band predicting unit 1002 predicts an empty band and its generation timing.
The communication band predicting unit 1002 predicts, for example, a vacant band of the information network 11 generated during a production facility downtime by analyzing past trends and the like. For example, the communication band prediction unit 1002 can predict the generation timing of the following free band from the tendency of the generated downtime.
・ Regular downtime (eg lunch break)
→ It can be predicted that a certain amount of free bandwidth will occur regularly.
・ Irregular downtime (eg, temporary interruption of production due to troubles in production facilities)
→ Although the generation timing is unknown, the communication band prediction unit 1002 can predict the generation amount of the free band in a probabilistic manner.
In the present embodiment, the method for predicting the free bandwidth of the communication bandwidth predicting unit 1002 does not matter.
The communication band prediction unit 1002 notifies the reception schedule generation unit 1001 of the prediction result of the free band.

In step S04, the reception schedule generation unit 1001 determines the priority of irregular data to which attribute information has been transferred from the reference identifier analysis unit 1004, and generates a reception schedule for irregular data based on the priority.
For example, the reception schedule generation unit 1001 sets higher priority for irregular data having a larger value obtained by data analysis and a smaller size (short transmission time).
Specifically, the reception schedule generation unit 1001 determines the priority according to the following criteria.

Note that the utility value of data is determined based on what kind of analysis is performed on irregular data based on the type of irregular data.
The size of the data size is determined based on the free bandwidth predicted in step S03.
The priority determination method is not limited to the above.

The reception schedule generation unit 1001 generates a reception schedule using a priority-based scheduling method based on the determined priority.
The type of the priority-based scheduling method used by the reception schedule generation unit 1001 is not limited.

When the reception timing indicated in the reception schedule generated in step S04 has arrived (YES in step S05), in step S06, the data transmission request unit 1005 sends the corresponding irregular data transmission request message to the communication unit 1008. To the data collection device 20a.

In step S07, the communication unit 1008 receives irregular data transmitted from the data collection device 20a. Then, the communication unit 1008 transfers the received irregular data to the data storage unit 1007. The data storage unit 1007 stores irregular data in the storage unit 1009.

* Due to downtime interruptions, not all irregular data can be received at a single reception timing. For this reason, when all irregular data cannot be received at one reception timing (NO in step S08), the data analysis apparatus 10 receives unscheduled irregular data at the next reception timing. Perform (step S05-step S07).

If all irregular data has been received (YES in step S08), in step S09, the data analysis unit 1003 reads the irregular data from the storage unit 1009 and analyzes the read irregular data.

The above is the operation of the data analysis apparatus 10.
In the above description, the reception of one irregular data has been described. However, a plurality of irregular data may actually occur in parallel. That is, when a plurality of reference identifiers are received by the communication unit 1008, the reception schedule generation unit 1001 determines the priority for each irregular data based on the attribute of each irregular data. And the reception schedule production | generation part 1001 produces | generates the reception schedule prescribed | regulated that the irregular data with a higher priority are received earlier. The communication unit 1008 receives each irregular data from the data collection device 20a according to the generated reception schedule.

Next, an operation example of the data collection device 20a will be described with reference to FIG.

In step S21, the data acquisition unit 2005 acquires irregular data. That is, the data acquisition unit 2005 receives irregular data from the data collection device 20b or the data collection device 20c. In addition, the data acquisition unit 2005 receives irregular data from a device connected to the data collection device 20a.
The data acquisition unit 2005 transfers the acquired irregular data to the data storage unit 2003.

In step S22, the data storage unit 2003 stores irregular data in the storage unit 2006.

In step S23, the reference identifier generation unit 2002 generates a reference identifier for irregular data.

In step S <b> 24, the communication unit 2004 transmits a reference identifier to the data analysis device 10.
More specifically, the communication unit 2004 transmits a reference identifier to the data analysis device 10 using a free band during real-time communication. The communication unit 2004 transmits the reference identifier within the range of irregular communication (transient communication) permitted during real-time communication, and does not affect the punctuality of real-time communication.

When the communication unit 2004 receives a transmission request message from the data analysis apparatus 10 (YES in step S25), the communication unit 2004 notifies the data reading unit 2001 of reception of the transmission request message.

In step S26, the data reading unit 2001 reads out the irregular data to be transmitted from the storage unit 2006. Then, the data reading unit 2001 transfers the read irregular data to the communication unit 2004.

In step S27, the communication unit 2004 transmits irregular data to the data analysis apparatus 10.

* Due to downtime interruptions etc., not all irregular data can be transmitted at one transmission timing. For this reason, when all irregular data cannot be transmitted at one transmission timing (NO in step S28), the data collection device 20a transmits unsent irregular data at the next transmission timing. Perform (step S25-step S27).

If all irregular data has been transmitted (YES in step S08), the data collection device 20a ends the operation.

The above is the operation of the data collection device 20a.

*** Explanation of the effect of the embodiment ***
As described above, in the present embodiment, the data analysis apparatus 10 receives a large amount of irregular data at a timing when the communication band of the information network 11 is free. Therefore, according to the present embodiment, the data analysis device 10 can receive irregular data without affecting the real-time communication performed in the information network 11. Similarly, the data collection device 20a can transmit irregular data without affecting the real-time communication performed in the information network 11.
In addition, when irregular data is generated, the data collection device 20a temporarily suspends transmission of the irregular data and transmits a reference identifier indicating the attribute of the irregular data to the data analysis device 10. Since the data size of the reference identifier is small, the data collection device 20a can notify the data analysis device 10 of the importance of irregular data without affecting the real-time communication. Similarly, the data analysis apparatus 10 can generate an appropriate reception schedule in consideration of the importance of irregular data without affecting the real-time communication.

*** Explanation of hardware configuration ***
Finally, a supplementary description of the hardware configuration of the data analysis device 10 and the data collection device 20a will be given.
The processor 102 and the processor 202 are integrated circuits (ICs) that perform processing.
The processor 102 and the processor 202 are a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and the like.
The storage device 103 and the storage device 203 are a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an HDD (Hard Disk Drive), and the like.
The information communication interface 101, the field communication interface 201, and the information communication interface 205 include a receiver that receives data and a transmitter that transmits data.
The information communication interface 101, the field communication interface 201, and the information communication interface 205 are, for example, a communication chip or a NIC (Network Interface Card).

The storage device 103 also stores an OS (Operating System).
Then, at least a part of the OS is executed by the processor 102.
While executing at least a part of the OS, the processor 102 receives a reception schedule generation unit 1001, a communication band prediction unit 1002, a data analysis unit 1003, a reference identifier analysis unit 1004, a data transmission request unit 1005, a communication band confirmation unit 1006, a data storage A program for realizing the functions of the unit 1007 and the communication unit 1008 is executed.
When the processor 102 executes the OS, task management, memory management, file management, communication control, and the like are performed.
In addition, the processing results of the reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage unit 1007, and the communication unit 1008 are obtained. Information, data, signal values, and variable values to be shown are stored in at least one of the storage device 103, a register in the processor 102, and a cache memory.
Also, the functions of the reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage unit 1007, and the communication unit 1008 are realized. The program may be stored in a portable storage medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a Blu-ray (registered trademark) disk, or a DVD.

The storage device 203 also stores an OS.
At least a part of the OS is executed by the processor 202.
The processor 202 executes a program that realizes the functions of the data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 while executing at least a part of the OS.
When the processor 202 executes the OS, task management, memory management, file management, communication control, and the like are performed.
In addition, information, data, signal values, and variable values indicating processing results of the data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 are stored in the storage device 203 and the processor 202. Stored in at least one of the registers and the cache memory.
A program that realizes the functions of the data reading unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 includes a magnetic disk, a flexible disk, an optical disk, a compact disk, and Blu-ray (registered trademark). You may memorize | store in portable storage media, such as a disk and DVD.

In addition, the reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage unit 1007, the communication unit 1008, and the data reading unit 2001. The “part” of the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 may be read as “circuit” or “process” or “procedure” or “processing”.
In addition, the data analysis device 10 and the data collection device 20a may be implemented by an electronic circuit circuit such as a logic IC (Integrated Circuit), a GA (Gate Array), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable Gate Array). Good.
In this case, the reception schedule generation unit 1001, the communication band prediction unit 1002, the data analysis unit 1003, the reference identifier analysis unit 1004, the data transmission request unit 1005, the communication band confirmation unit 1006, the data storage unit 1007, the communication unit 1008, and the data reading The unit 2001, the reference identifier generation unit 2002, the data storage unit 2003, the communication unit 2004, and the data acquisition unit 2005 are each realized as part of an electronic circuit.
The processor and the electronic circuit are also collectively referred to as a processing circuit.

10 data analysis device, 11 information network, 20a data collection device, 20b data collection device, 20c data collection device, 21 field network, 100 data collection system, 101 information communication interface, 102 processor, 103 storage device, 104 bus, 201 field Communication interface, 202 processor, 203 storage device, 204 input / output interface, 205 information communication interface, 206 bus, 1001 reception schedule generation unit, 1002 communication bandwidth prediction unit, 1003 data analysis unit, 1004 reference identifier analysis unit, 1005 data transmission request Unit, 1006 communication band confirmation unit, 1007 data storage unit, 1008 communication unit, 1009 storage unit, 2001 data reading unit 2002 reference identifier generation unit, 2003 data storage unit, 2004 a communication unit, 2005 data acquisition unit, 2006 a storage unit.

Claims

An attribute notification information receiving unit for receiving attribute notification information having a data size smaller than the transmission data, including attribute information of transmission data transmitted by the data transmission device;
A communication band predicting unit that predicts a free state of a communication band in a communication line used for communication with the data transmission device;
A reception schedule generation unit that generates a reception schedule of the transmission data based on the attribute information of the transmission data included in the attribute notification information and the availability of the communication band predicted by the communication band prediction unit;
A data receiving device comprising: a data receiving unit that receives the transmission data from the data transmitting device in accordance with the reception schedule generated by the reception schedule generating unit.
The reception schedule generation unit
The priority of the transmission data is determined based on the attribute information of the transmission data included in the attribute notification information, and the reception of the transmission data is performed based on the determined priority of the transmission data and the availability of the communication band. The data receiving apparatus according to claim 1, wherein the data receiving apparatus generates a schedule.
The data receiving device further includes:
In accordance with the reception schedule, a data transmission request unit that requests the data transmission device to transmit the transmission data,
The data receiver is
The data reception device according to claim 1, wherein the transmission data transmitted from the data transmission device in response to a request from the data transmission request unit is received.
The attribute notification information receiving unit
For a plurality of transmission data transmitted by the data transmission device, a plurality of attribute notification information is received,
The reception schedule generation unit
Based on the attribute information of each transmission data included in each attribute notification information, determine the priority for each transmission data, generate a reception schedule that is prescribed to receive earlier transmission data with higher priority,
The data receiver is
The data reception device according to claim 2, wherein each transmission data is received from the data transmission device according to the reception schedule generated by the reception schedule generation unit.
The attribute notification information receiving unit
The attribute notification information including at least one of the generation time of the transmission data, the generation source of the transmission data, the data type of the transmission data, and the data size of the transmission data is received as the attribute information of the transmission data. The data receiving device described in 1.
Including attribute information of transmission data, an attribute notification information generating unit that generates attribute notification information having a data size smaller than the transmission data;
An attribute notification information transmitting unit that transmits the attribute notification information generated by the attribute notification information generating unit to a data receiving device;
After the attribute notification information is transmitted to the data receiving device by the attribute notification information transmitting unit, the transmission data is transmitted to the data receiving device when the data receiving device requests transmission of the transmission data. A data transmission device having a data transmission unit.
The attribute notification information generation unit
For a plurality of transmission data, generate the attribute notification information for each transmission data,
The attribute notification information transmitting unit
For the plurality of transmission data, the attribute notification information is transmitted to the data receiving device for each transmission data,
The data transmitter is
The data transmission device according to claim 6, wherein transmission data requested to be transmitted from the data reception device is transmitted to the data reception device every time transmission of transmission data is requested from the data reception device.
The attribute notification information generation unit
The attribute notification information including at least one of the generation time of the transmission data, the generation source of the transmission data, the data type of the transmission data, and the data size of the transmission data is generated as the attribute information of the transmission data. The data transmission device described in 1.
The computer receives attribute notification information having a data size smaller than the transmission data, including attribute information of transmission data transmitted by the data transmission device,
The computer predicts a communication bandwidth availability in a communication line used for communication with the data transmission device,
The computer generates the transmission data reception schedule based on the attribute information of the transmission data included in the attribute notification information and the predicted availability of the communication band,
A data reception method in which the computer receives the transmission data from the data transmission device in accordance with the generated reception schedule.
The computer generates attribute notification information including the attribute information of the transmission data and having a data size smaller than the transmission data,
The computer transmits the generated attribute notification information to a data receiving device;
A data transmission method in which the computer transmits the transmission data to the data receiving device when the transmission of the transmission data is requested from the data receiving device after the attribute notification information is transmitted to the data receiving device. .
Attribute notification information reception processing for receiving attribute notification information having a data size smaller than the transmission data, including attribute information of transmission data transmitted by the data transmission device;
A communication band prediction process for predicting a free state of a communication band in a communication line used for communication with the data transmission device;
A reception schedule generation process for generating a reception schedule of the transmission data based on the attribute information of the transmission data included in the attribute notification information and the availability of the communication band predicted by the communication band prediction process;
A data reception program for causing a computer to execute a data reception process for receiving the transmission data from the data transmission device in accordance with the reception schedule generated by the reception schedule generation process.
Attribute notification information generation processing for generating attribute notification information having a data size smaller than the transmission data, including attribute information of the transmission data;
Attribute notification information transmission processing for transmitting the attribute notification information generated by the attribute notification information generation processing to a data receiving device;
After the attribute notification information is transmitted to the data reception device by the attribute notification information transmission process, the transmission data is transmitted to the data reception device when the data reception device requests transmission of the transmission data. A data transmission program for causing a computer to execute data transmission processing.