WO2018123143A1 - 収集装置、収集方法、プログラム及び収集システム - Google Patents

収集装置、収集方法、プログラム及び収集システム Download PDF

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Publication number
WO2018123143A1
WO2018123143A1 PCT/JP2017/031534 JP2017031534W WO2018123143A1 WO 2018123143 A1 WO2018123143 A1 WO 2018123143A1 JP 2017031534 W JP2017031534 W JP 2017031534W WO 2018123143 A1 WO2018123143 A1 WO 2018123143A1
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WO
WIPO (PCT)
Prior art keywords
unit
data
operation data
transmission
data unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/031534
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English (en)
French (fr)
Japanese (ja)
Inventor
志田　雅人
由起彦 井上
青山　邦明
一郎 永野
瞬 新妻
彰久 遠藤
貴洋 山内
毅 木下
慎作 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Ltd
Original Assignee
Mitsubishi Hitachi Power Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Hitachi Power Systems Ltd filed Critical Mitsubishi Hitachi Power Systems Ltd
Priority to US16/464,963 priority Critical patent/US20200019150A1/en
Priority to CN201780074247.XA priority patent/CN110050239A/zh
Publication of WO2018123143A1 publication Critical patent/WO2018123143A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end

Definitions

  • the present invention relates to a collection device, a collection method, a program, and a collection system.
  • safe and stable operation is desired for plants including power plants and chemical plants.
  • remote monitoring is performed to collect data indicating an operation state from the plant and diagnose an abnormality sign based on the collected data. In such remote monitoring, it is necessary to guarantee the authenticity of data.
  • Patent Document 1 A technique for proving that the form data has not been corrected after the original data is processed and output as form data when operating data of the power plant or the like is managed is known (for example, Patent Document 1). reference).
  • Patent Document 2 A technique for generating integrity data that can be verified with a secret key by giving an integrity code to plant data is known (see, for example, Patent Document 2).
  • the data collected from the plant that is used for the diagnostic process for predicting abnormality is diverse. For this reason, the collected data may vary in quality. There is a possibility that the diagnosis process of the sign of abnormality cannot be executed with the data having variations in quality. In addition, when the data quality is not suitable for the diagnostic process for predicting abnormality, it may take time to prepare appropriate data. As described above, it is desired to collect data suitable for the diagnosis process of the sign of abnormality.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a collection apparatus, a collection method, a program, and a collection system that collect appropriate data.
  • the collection device of the present invention includes a receiving unit that receives a data unit including operation data indicating an operation state of a plant and a guarantee value that guarantees the authenticity of the operation data, and based on the guarantee value, A first inspection unit that inspects authenticity, and a first transmission request unit that requests retransmission of the data unit to the transmission side of the data unit when the inspection result of the first inspection unit denies authenticity It is characterized by providing.
  • the collection device of the present invention includes a second inspection unit that inspects whether or not the operation data is normal based on whether or not the operation data is within a predetermined range, and a transmission side of the data unit.
  • a second transmission requesting unit that requests transmission of the predetermined data unit, and the second transmission requesting unit determines that the operation data is abnormal when the second inspection unit determines that the operation data is abnormal. It is preferable that the transmission side of the unit is requested to transmit a data unit at a time different from the data unit including the operation data determined to be abnormal. According to this configuration, when it is determined that the operation data is abnormal, appropriate data can be collected.
  • the collection device of the present invention includes a complementing unit that complements the value of the operation data included in the data unit, and the second inspection unit stores the operation data determined to be abnormal by the second inspection unit. It is determined whether or not it is possible to execute a diagnostic process for predicting abnormality of the plant based on the data unit by complementing the value of the operation data determined to be abnormal for the data unit including And it is preferable that the said complement part complements the value of the said driving data determined to be abnormal, when it determines with the said 2nd test
  • the operation data determined to be abnormal when it is possible to execute a diagnosis process for a sign of abnormality of the plant by complementing the value of the operation data determined to be abnormal. You can supplement the value of and collect appropriate data.
  • the collection device includes: an acquisition unit that acquires a diagnosis result of a diagnostic process for predicting abnormality of the plant using the data unit; and a reception interval in the reception unit is changed with respect to a transmission side of the data unit
  • a third transmission request unit that requests to transmit the data unit as described above, and the third transmission request unit, when the diagnostic result acquired by the acquisition unit indicates that there is a sign of abnormality, It is preferable that the transmission side of the data unit is requested to transmit the data unit so that the reception interval in the reception unit is changed. According to this configuration, when the diagnosis result indicates that there is a sign of abnormality, appropriate data can be collected.
  • the collection device of the present invention is configured to acquire the diagnosis result of the diagnosis process of the sign of abnormality of the plant using the data unit, and to change the item of the operation data included and transmit the data unit A fourth transmission requesting unit for requesting, wherein the fourth transmission requesting unit is included for the transmitting side of the data unit when the diagnosis result acquired by the acquiring unit indicates that there is a sign of abnormality It is preferable to change the item of the operation data and request to transmit the data unit. According to this configuration, when the diagnosis result indicates that there is a sign of abnormality, appropriate data can be collected.
  • the reception interval in the reception unit is transmitted to the transmission side of the data unit. Is preferably requested to transmit the data unit. According to this configuration, when the diagnosis result indicates that there is a sign of abnormality, appropriate data can be collected.
  • the reception interval in the reception unit is transmitted to the transmission side of the data unit. It is preferable to request that the data unit be transmitted with a shift. According to this configuration, when the diagnosis result indicates that there is a sign of abnormality, appropriate data can be collected.
  • the collection method of the present invention includes a reception step of receiving a data unit including operation data indicating an operation state of a plant and a guarantee value for guaranteeing the authenticity of the operation data, and based on the guarantee value, An inspection step for inspecting authenticity, and a transmission requesting step for requesting retransmission of the data unit to the transmission side of the data unit when the inspection result in the inspection step denies authenticity.
  • the program of the present invention includes a reception step of receiving a data unit including operation data indicating an operation state of a plant and a guarantee value for guaranteeing the authenticity of the operation data, and the authenticity of the data unit based on the guarantee value.
  • This program can collect appropriate data.
  • the collection system of the present invention includes a receiving unit that receives a data unit including operation data indicating an operation state of a plant and a guarantee value that guarantees the authenticity of the operation data, and based on the guarantee value, A first inspection unit that inspects authenticity, and a first transmission request unit that requests retransmission of the data unit to the transmission side of the data unit when the inspection result of the first inspection unit denies authenticity And a transmission device having a transmission unit for transmitting the data unit to the collection device.
  • a collection device a collection method, a program, and a collection system that collect appropriate data can be realized.
  • FIG. 1 is a block diagram illustrating an example of a collection system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of the diagnostic apparatus.
  • FIG. 3 is a block diagram of the management apparatus.
  • FIG. 4 is a block diagram of the transmission apparatus.
  • FIG. 5A is a schematic diagram illustrating an example of data acquired by the transmission device.
  • FIG. 5B is a schematic diagram illustrating another example of data acquired by the transmission device.
  • FIG. 6 is a schematic diagram illustrating an example of an operation data unit.
  • FIG. 7 is a block diagram of the collection device according to the embodiment of the present invention.
  • FIG. 8 is a schematic diagram illustrating another example of the operation data unit.
  • FIG. 9 is a schematic diagram illustrating another example of the operation data unit.
  • FIG. 1 is a block diagram illustrating an example of a collection system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of the diagnostic apparatus.
  • FIG. 3 is a block diagram of
  • FIG. 10 is a schematic diagram illustrating another example of the operation data unit.
  • FIG. 11 is a flowchart showing an outline of a collecting method in the collecting apparatus according to the embodiment of the present invention.
  • FIG. 12 is a flowchart showing an outline of a collection method in the collection apparatus according to the embodiment of the present invention.
  • FIG. 13 is a schematic diagram illustrating data exchange between the collection device, the transmission device, and the management device according to the embodiment of the present invention.
  • FIG. 1 is a block diagram showing an example of a collection system according to an embodiment of the present invention.
  • the collection system 1 collects operation data that uses a sign of a plant abnormality in the diagnostic apparatus 100 in a diagnostic process.
  • the collection system 1 can transmit and receive data to and from the diagnostic device 100 and the management device 110.
  • the diagnostic device 100 will be described with reference to FIG. FIG. 2 is a block diagram of the diagnostic apparatus.
  • the diagnostic apparatus 100 is installed in the base of a service provider that performs remote monitoring of a plant.
  • the diagnosis device 100 diagnoses the presence or absence of a plant abnormality based on an operation data unit DU, which will be described later, received from the collection device 3.
  • the diagnostic device 100 transmits a diagnostic result to the collection device 3.
  • the diagnostic apparatus 100 includes a reception unit 101, a transmission unit 102, a storage unit 103, and a control unit 104.
  • the receiving unit 101 can receive data from the collection device 3.
  • the receiving unit 101 receives the operation data unit DU from the collection device 3.
  • the transmission unit 102 can transmit data to the collection device 3.
  • the transmission unit 102 transmits the diagnosis result to the collection device 3.
  • the storage unit 103 stores various programs and various databases used for executing information processing in the control unit 104.
  • the storage unit 103 stores the received operation data unit DU.
  • the storage unit 103 stores the diagnosis result.
  • the control unit 104 includes a memory and a CPU.
  • the control unit 104 may be realized by dedicated hardware, or may be realized by loading a program for realizing the function of the control unit 104 into a memory and executing the program. Good.
  • the control unit 104 has a diagnosis unit 1041.
  • the diagnosis unit 1041 executes a diagnosis process for diagnosing the presence or absence of a plant abnormality based on the received operation data unit DU.
  • the management device 110 will be described with reference to FIG. FIG. 3 is a block diagram of the management apparatus.
  • the management apparatus 110 is installed in the base of the plant operator.
  • the management device 110 manages an operation data unit DU that is data indicating the operation state of the plant.
  • the management device 110 includes a receiving unit 111, a storage unit 112, and a control unit 113.
  • the receiving unit 111 can receive data from the transmission device 2.
  • the reception unit 111 receives the operation data unit DU transmitted by the transmission device 2.
  • the storage unit 112 stores various programs and various databases used for executing information processing in the control unit 113.
  • the storage unit 112 stores the received operation data unit DU.
  • the collection system 1 includes a transmission device 2 and a collection device 3.
  • the transmission device 2 will be described with reference to FIG. FIG. 4 is a block diagram of the transmission apparatus.
  • the transmission device 2 is installed in the plant.
  • the transmission device 2 acquires the operation data indicating the operation state of the plant output from the devices and sensors, and transmits the operation data to the collection device 3 and the management device 110. More specifically, the transmission device 2 transmits an operation data unit DU including the acquired operation data and a hash value that guarantees the authenticity of the operation data to the collection device 3 and the management device 110.
  • the transmission device 2 includes a transmission unit 21, a storage unit 22, and a control unit 23.
  • a hash value is an example of a guarantee value that guarantees the authenticity of operation data.
  • the transmission unit 21 can transmit data to the collection device 3 and the management device 110.
  • the transmission unit 21 transmits the operation data unit DU to the collection device 3 and the management device 110 at a desired time interval.
  • the transmission unit 21 transmits the operation data unit DU to the collection device 3 and the management device 110 at each sampling interval.
  • the operation data unit DU includes at least one operation data and a hash value.
  • the operation data is data acquired by a sensor attached to a component of the plant equipment.
  • the operation data includes a plurality of data from data A acquired by the sensor A to data ZA acquired by the sensor ZA.
  • the hash value is uniquely set for each operation data unit DU.
  • the hash value is calculated by a hash function based on the driving data included in the driving data unit DU.
  • the sampling interval is a time interval ⁇ t at which the operation data unit DU is transmitted to the collection device 3 and the management device 110.
  • the storage unit 22 stores various programs and various databases used for executing information processing in the control unit 23.
  • the storage unit 22 stores operation data and an operation data unit DU.
  • the control unit 23 includes a memory and a CPU (Central Processing Unit).
  • the control unit 23 may be realized by dedicated hardware, or may be realized by loading a program for realizing the function of the control unit 23 into a memory and executing the program. Good.
  • the control unit 23 includes an acquisition unit 231 and a generation unit 232.
  • the acquisition unit 231 acquires operation data acquired by a sensor attached to a component of a plant device.
  • the acquisition unit 231 acquires data at least at the same time interval as the sampling interval.
  • the acquisition unit 231 stores the acquired data in the storage unit 22.
  • FIG. 5A is a schematic diagram illustrating an example of data acquired by the transmission device.
  • FIG. 5B is a schematic diagram illustrating another example of data acquired by the transmission device.
  • the operation data acquired by the sensors from the sensor A to the sensor ZA is received at the sampling interval ⁇ t.
  • data A1 is acquired from sensor A
  • data B1 is acquired from sensor B
  • data C1 is acquired from sensor C
  • data Z1 is acquired from sensor Z
  • sensor Data ZA1 is acquired from ZA.
  • data A2 is acquired from sensor A
  • data B2 is acquired from sensor B
  • data C2 is acquired from sensor C
  • data Z2 is acquired from sensor Z
  • data ZA2 is acquired from sensor ZA.
  • data An is obtained from sensor A
  • data Bn is obtained from sensor B
  • data Cn is obtained from sensor C
  • data Zn is obtained from sensor Z
  • data is obtained from sensor ZA.
  • Get ZAn is a natural number.
  • the operation data acquired by the sensors from the sensor A to the sensor ZA may be received at a time interval shorter than the sampling interval ⁇ t.
  • data A11 is acquired from sensor A
  • data B11 is acquired from sensor B
  • data from sensor C is acquired.
  • C11 is acquired
  • data Z11 is acquired from sensor Z
  • data ZA11 is acquired from sensor ZA.
  • time t1 + (3/2) ⁇ t data A21 is obtained from sensor A
  • data B21 is obtained from sensor B
  • data C21 is obtained from sensor C
  • data Z21 is obtained from sensor Z
  • data is obtained from sensor ZA.
  • ZA21 is acquired.
  • data An1 is acquired from sensor A
  • data Bn1 is acquired from sensor B
  • data Cn1 is acquired from sensor C
  • data Zn1 is acquired from sensor Z.
  • Data ZAn1 is acquired from the sensor ZA.
  • the generation unit 232 generates an operation data unit DU that combines operation data and a hash value.
  • the generation unit 232 may generate the operation data unit DU including all the operation data acquired by the acquisition unit 231 or may generate the operation data unit DU including a part of the acquired operation data.
  • the generation unit 232 stores the generated operation data unit DU in the storage unit 22.
  • the operation data unit DU generated by the generation unit 232 will be described with reference to FIG.
  • FIG. 6 is a schematic diagram illustrating an example of an operation data unit.
  • generation part 232 produces
  • the generation unit 232 includes, as operation data, data A1 acquired from the sensor A, data B1 acquired from the sensor B, data C1 acquired from the sensor C, and data Z1 acquired from the sensor Z.
  • An operation data unit DU1 including the hash value hash1 generated from the data is generated.
  • the generation unit 232 includes, as operation data, data A2 acquired from the sensor A, data B2 acquired from the sensor B, data C2 acquired from the sensor C, and data Z2 acquired from the sensor Z.
  • An operation data unit DU2 including the generated hash value hash2 is generated.
  • the generation unit 232 includes, as operation data, data An acquired from the sensor A, data Bn acquired from the sensor B, data Cn acquired from the sensor C, and data Zn acquired from the sensor Z.
  • An operation data unit DUn including the generated hash value hashn is generated. In the following explanation, when not distinguishing each operation data unit, it explains as operation data unit DU.
  • FIG. 7 is a block diagram of the collection device according to the embodiment of the present invention.
  • the collection device 3 is installed in the base of a service provider that performs remote monitoring of the plant.
  • the collection device 3 collects an operation data unit DU that is data indicating the operation state of the plant.
  • the collection device 3 outputs the operation data unit DU to the diagnostic device 100.
  • the collection device 3 includes a reception unit 31, a transmission unit 32, a storage unit 33, and a control unit 34.
  • the receiving unit 31 can receive data from the transmitting device 2.
  • the receiving unit 31 receives the operation data unit DU transmitted by the transmission device 2.
  • the reception unit 31 may receive all the operation data units DU generated from the operation data acquired by the acquisition unit 231 of the transmission device 2 or may receive a part of the generated operation data units DU. Good.
  • the transmission unit 32 can transmit data to the diagnostic device 100 and the management device 110.
  • the transmission unit 32 transmits the operation data unit DU to the diagnostic device 100.
  • the transmission unit 32 transmits the diagnosis result acquired from the diagnostic device 100 to the management device 110.
  • the storage unit 33 stores various programs and various databases used for executing information processing in the control unit 34.
  • the storage unit 33 stores the received operation data unit DU.
  • storage part 33 has memorize
  • the control unit 34 includes a memory and a CPU.
  • the control unit 34 may be realized by dedicated hardware, or may be realized by loading a program for realizing the function of the control unit 34 into a memory and executing the program. Good.
  • the control unit 34 includes a first inspection unit 341, a second inspection unit 342, an acquisition unit 343, a first transmission request unit 344, a second transmission request unit 345, a third transmission request unit 346, and a fourth A transmission request unit 347 and a complement unit 348 are included.
  • the first checking unit 341 checks whether or not the data is authentic based on the quality of the received operation data unit DU and the presence or absence of missing data in the received operation data unit DU. First, the first inspection unit 341 inspects the quality of the received operation data unit DU.
  • the first checking unit 341 includes the received hash value of the operation data unit DU (hereinafter referred to as “reception hash value”) and the hash value of the operation data unit DU stored in the storage unit 22 of the transmission device 2 (hereinafter referred to as “hash value”). , Referred to as “transmission hash value”). The first checking unit 341 determines that the quality is good when the received hash value matches the transmitted hash value.
  • the first inspection unit 341 determines that the quality is poor when the received hash value and the transmitted hash value do not match. For example, when the operation data unit DU is not correctly transmitted / received due to a communication error, or when the data of the operation data unit DU is falsified, the received hash value does not match the transmitted hash value, and the quality is poor. It is determined.
  • the first inspection unit 341 inspects whether the received operation data unit DU is missing data.
  • the first inspection unit 341 sorts the received operation data units DU by reception time. If the reception interval of the sorted operation data unit DU is longer than the sampling interval, the first inspection unit 341 determines that there is data loss. For example, when the operation data unit DU is not transmitted / received due to a communication error, the reception interval of the sorted operation data unit DU becomes longer than the sampling interval, and it is determined that there is data loss. The first inspection unit 341 determines that there is no missing data when the reception interval of the received operation data unit DU matches the sampling interval.
  • the first inspection unit 341 determines that the data is authentic when the data quality is good and there is no missing data.
  • the second inspection unit 342 inspects whether or not the received data of the operation data unit DU is normal.
  • the second inspection unit 342 inspects whether or not the operation data included in the received operation data unit DU satisfies the data range of the operation data.
  • the second inspection unit 342 determines that the operation data is normal when the operation data satisfies the data range.
  • the second inspection unit 342 determines that the operation data is abnormal when the operation data does not satisfy the data range. For example, when a sensor malfunctions, a value out of the data range is acquired or a value is not acquired, and it is determined that the operation data is abnormal.
  • the second inspection unit 342 determines whether or not the diagnosis apparatus 100 can execute the diagnosis process of the sign of abnormality using the operation data unit DU. To do. For example, when the operation data is slightly out of the data range, or when the operation data can be supplemented with an average value, it is determined that diagnosis is possible. For example, it is determined that the diagnosis is impossible when the operation data is significantly out of the data range or when the operation data cannot be complemented.
  • the acquisition unit 343 acquires the diagnosis result of the abnormality sign diagnosis process from the diagnosis apparatus 100.
  • the acquisition unit 343 stores the acquired diagnosis result in the storage unit 33.
  • the first transmission request unit 344 requests the transmission device 2 to retransmit the operation data unit DU. For example, if the operation data unit DU has not been correctly transmitted / received due to a communication error, or if the data in the operation data unit DU has been tampered with, it is determined that the data is not authentic. The data unit DU is likely to be determined that the data is authentic.
  • the second transmission request unit 345 determines the operation data unit DU determined to be abnormal for the transmission device 2. Request transmission of the operation data unit DU at a different time. When it is determined that there is data abnormality and diagnosis by the diagnostic device 100 is not possible, the second transmission request unit 345 determines the data of the operation data unit DU that is determined to be abnormal to the transmission device 2. Request transmission of the operation data unit DU for the previous and subsequent times. The second transmission request unit 345 generates data for the transmission device 2 based on the operation data newly acquired by the transmission device 2 when it is determined that there is a data abnormality and the diagnosis by the diagnostic device 100 is not possible. The transmission of the operation data unit DU may be requested.
  • the collection device 3 receives an operation data unit DU as shown in FIG.
  • the second transmission request unit 345 requests transmission of the operation data unit DU11 at time t1 + ⁇ t / 2 after time t1. If an abnormal value is included only in the operation data unit DU1, the operation data unit DU11 is likely to be determined as having no data abnormality.
  • the third transmission request unit 346 requests transmission of the operation data unit DU whose sampling interval is changed based on the diagnosis result acquired by the acquisition unit 343.
  • the third transmission request unit 346 may request transmission of the operation data unit DU generated by changing the sampling interval based on the operation data newly acquired by the transmission device 2.
  • the third transmission request unit 346 determines that a diagnosis process using a larger number of operation data units DU is required to accurately identify the failure time based on the diagnosis result, the operation with the sampling interval shortened.
  • the transmission of the data unit DU may be requested. This will be described in more detail with reference to FIG. FIG. 8 is a schematic diagram illustrating another example of the operation data unit.
  • the third transmission request unit 346 may request the transmission of the operation data unit DU every sampling interval ⁇ t / 2 by shortening the sampling interval. Thereby, more operation data units DU are obtained.
  • the third transmission request unit 346 requests transmission of the operation data unit DU with the sampling interval shifted based on the diagnosis result acquired by the acquisition unit 343.
  • the third transmission request unit 346 may request transmission of the operation data unit DU generated by shifting the sampling interval based on the operation data newly acquired by the transmission device 2.
  • FIG. 9 is a schematic diagram illustrating another example of the operation data unit.
  • the third transmission request unit 346 may request transmission of the operation data unit DUn2 at time t1 + d + (n ⁇ 1) ⁇ t instead of the operation data unit DUn at time t1 + (n ⁇ 1) ⁇ t for each sampling interval ⁇ t. Good. As a result, the number of operation data units DU to be received does not change, and operation data units DU in which the sampling interval period is shifted are obtained.
  • the fourth transmission request unit 347 requests the transmission device 2 to transmit the operation data unit DU in which the data item of the operation data unit DU is changed based on the diagnosis result acquired by the acquisition unit 343. In order to identify the cause of the abnormality, the operation data unit DU in which the data item is changed so as to include data from the sensor that is not acquired in the normal time is acquired.
  • the fourth transmission request unit 347 may request transmission of the operation data unit DU generated by changing the data item of the operation data unit DU based on the operation data newly acquired by the transmission device 2.
  • FIG. 10 is a schematic diagram illustrating another example of the operation data unit.
  • the fourth transmission request unit 347 requests the transmission device 2 to transmit the operation data unit DU to which the data item of the data ZA from the sensor ZA is added.
  • the complementing unit 348 displays each operation data of the operation data unit DU that is determined to be abnormal as an operation data unit. It complements with the average value of each operation data of DU.
  • the complement unit 348 may supplement all the operation data of the operation data unit DU with the average value, or may supplement only the operation data determined to be abnormal with the average value.
  • FIG. 11 is a flowchart showing an outline of a collecting method in the collecting apparatus according to the embodiment of the present invention.
  • FIG. 12 is a flowchart showing an outline of a collection method in the collection apparatus according to the embodiment of the present invention.
  • control unit 34 is in a state where the receiving unit 31 can always receive the operation data unit DU transmitted by the transmitting device 2.
  • the control unit 34 executes the process of the flowchart shown in FIG.
  • the control unit 34 uses the first inspection unit 341 to inspect the quality of the received operation data unit DU (step S11). And the control part 34 test
  • FIG. When the first inspection unit 341 determines that the quality is good and there is no missing data, the control unit 34 determines that the data is authentic (Yes in step S11). “Good quality” means that the operation data unit DU is correctly transmitted and received and the data is not falsified. When the control unit 34 determines that the data is authentic, the control unit 34 proceeds to step S13. When the first inspection unit 341 determines that the quality is poor or missing data, the control unit 34 determines that the data is not authentic (No in step S11). The poor quality means that the operation data unit DU has not been correctly transmitted / received due to a communication error, or the data of the operation data unit DU has been falsified. When determining that the data is not authentic, the control unit 34 proceeds to step S12.
  • the control unit 34 uses the first transmission request unit 344 to request the transmission device 2 to retransmit the operation data unit DU (step S12).
  • the control unit 34 ends the process of this flowchart. Note that when the receiving unit 31 receives the operation data unit DU based on the re-transmission request in step S12, the process is executed from step S11 on the received operation data unit DU.
  • the control unit 34 uses the second inspection unit 342 to inspect whether or not the received data of the operation data unit DU is normal (step S13).
  • the control unit 34 determines that the operation data is normal (Yes in step S13).
  • the control unit 34 proceeds to step S14.
  • the control unit 34 determines that the operation data is not normal (No in step S13).
  • the control unit 34 proceeds to step S15.
  • the control unit 34 transmits the operation data unit DU to the diagnostic device 100 by the transmission unit 32 (step S14). By the processing so far, it is ensured that the data of the operation data unit DU transmitted to the diagnostic device 100 is authentic and normal. The control unit 34 ends the process of this flowchart.
  • the control unit 34 determines whether or not diagnostic processing is possible using the operation data unit DU in the diagnostic device 100 in the second inspection unit 342 (step S15). “Diagnosis processing is possible” means a state in which sufficient data is collected to perform abnormality diagnosis. When the second inspection unit 342 determines that the diagnosis is possible (Yes in step S15), the control unit 34 proceeds to step S16. If the second inspection unit 342 determines that the diagnosis is not possible (No in step S15), the control unit 34 proceeds to step S18.
  • the control unit 34 supplements the data (step S16). For example, the control unit 34 supplements the operation data unit DU with an average value by the complement unit 348. The control unit 34 proceeds to step S17.
  • the control unit 34 transmits the complemented operation data unit DU to the diagnostic device 100 by the transmission unit 32 (step S17).
  • the control unit 34 ends the process of this flowchart.
  • the control unit 34 requests the transmission device 2 by the second transmission request unit 345 to transmit the operation data unit DU before and after the operation data unit DU for which the data is determined to be abnormal (step S18). .
  • the control unit 34 ends the process of this flowchart. Note that when the receiving unit 31 receives the operation data unit DU based on the transmission request in step S18, the process is executed from step S11 on the received operation data unit DU.
  • the operation data unit DU suitable for the diagnostic process in the diagnostic apparatus 100 is collected. Then, in the diagnostic device 100, diagnostic processing is executed using the operation data unit DU. Then, the diagnosis device 100 transmits the diagnosis result to the collection device 3.
  • control unit 34 executes the processing of the flowchart shown in FIG. 12 when receiving the diagnosis result from the diagnosis device 100.
  • the control unit 34 is in a state where the acquisition unit 343 can always acquire the diagnosis result transmitted by the diagnostic device 100.
  • the control unit 34 acquires a diagnosis result from the diagnostic device 100 by the acquisition unit 343 (step S21).
  • the control unit 34 proceeds to step S22.
  • the control unit 34 determines whether or not an abnormality sign has been detected (step S22). If the diagnosis result indicates that a sign of abnormality has been detected (Yes in step S22), the control unit 34 proceeds to step S24. When the diagnosis result indicates that no sign of abnormality is detected (No in step S22), the control unit 34 proceeds to step S23.
  • the control unit 34 determines that there is no abnormality (step S23). The control unit 34 proceeds to step S28.
  • the control unit 34 determines whether the cause can be specified or estimated (step S24). More specifically, the control unit 34 determines whether or not the cause of detecting the abnormality sign can be specified or estimated. For example, the control unit 34 determines that the cause can be specified or estimated when the part that has caused the abnormality sign is specified or estimated. If the cause can be identified or estimated (Yes in step S24), the control unit 34 proceeds to step S25. If the cause cannot be identified or estimated (No in step S24), the control unit 34 proceeds to step S26.
  • the control unit 34 transmits the operation data unit DU to the transmission device 2 by the third transmission request unit 346 so that the control unit 34 adds data related to the site that has detected the sign of abnormality. Is requested (step S25). For example, the control unit 34 requests transmission of the operation data unit DU at the changed sampling interval. For example, the control unit 34 uses the third transmission request unit 346 to request transmission of the operation data unit DU with the changed data item. The control unit 34 proceeds to step S27. Note that when the receiving unit 31 receives the operation data unit DU based on the transmission request in step S25, the process is executed from step S11 on the received operation data unit DU.
  • the control unit 34 requests the transmission apparatus 2 to transmit additional data such as field information necessary for specifying the cause of the abnormality sign in addition to the operation data unit DU (step S26).
  • additional data such as field information necessary for specifying the cause of the abnormality sign in addition to the operation data unit DU (step S26).
  • the field information there is information on the presence or absence of a sensor failure, information on an emergency stop of the plant, and the like.
  • the control unit 34 proceeds to step S27. Note that, when the reception unit 31 receives the operation data unit DU based on the transmission request in step S26, the process is executed from step S11 on the received operation data unit DU.
  • the control unit 34 determines that there is an abnormality and monitoring is continued (step S27). The control unit 34 proceeds to step S28.
  • the control unit 34 uses the transmission unit 32 to transmit the diagnosis result acquired from the diagnostic device 100 to the management device 110 (step S28).
  • the operation data unit DU used for diagnosis in the diagnosis apparatus 100 is appropriately collected by the collection system 1.
  • FIG. 13 is a schematic diagram illustrating data exchange between the collection device, the transmission device, and the management device according to the embodiment of the present invention.
  • the transmission device 2 transmits the operation data unit DU to the collection device 3 and the management device 110.
  • the collection device 3 executes the processing of the flowchart shown in FIG. 11 based on the received operation data unit DU.
  • the control unit 34 checks the quality of the received operation data unit DU (step S11). If the control unit 34 judges that the quality is good, it is checked whether or not the received data of the operation data unit DU is normal (step S13). If it is determined by the control unit 34 that the data is normal, it is determined whether or not sufficient data is collected in the diagnostic apparatus 100 to perform abnormality diagnosis using the operation data unit DU (step S15). ). When the control unit 34 determines that sufficient data is not collected, the transmission of the operation data unit DU before and after the operation data unit DU determined to be abnormal is transmitted to the transmission device 2. Requested (step S18).
  • the operation data unit DU corresponding to the transmission request is transmitted to the collection device 3 and the management device 110 based on the transmission request of the operation data unit DU from the collection device 3.
  • the received operation data unit DU is stored in the storage device.
  • the operation data unit is sent to the diagnosis device 100.
  • DU is transmitted.
  • abnormality diagnosis is executed based on the operation data unit DU.
  • the collection device 3 executes the processing of the flowchart shown in FIG. 12 and acquires the diagnostic result from the diagnostic device 100 (step S21).
  • step S22 it is determined by the control unit 34 whether or not a sign of abnormality has been detected (step S22).
  • it is determined whether the cause can be specified or estimated (step S24).
  • the operation data unit DU is transmitted to the transmission device 2 so as to add data related to the site that caused the abnormality sign. Is requested (step S25).
  • the operation data unit DU corresponding to the transmission request is transmitted to the collection device 3 and the management device 110 based on the transmission request of the operation data unit DU from the collection device 3.
  • the received operation data unit DU is stored in the storage device.
  • the collection device 3 executes the processing of the flowchart shown in FIG. 11 based on the received operation data unit DU.
  • the collection device 3 transmits the diagnosis result acquired in step S21 to the management device 110.
  • the collection device 3 collects appropriate operation data units DU used for diagnosis in the diagnosis device 100.
  • the first inspection unit 341 checks whether or not the operation data unit DU is authentic. Thereby, this embodiment can guarantee that there is no data inconsistency or data tampering due to a communication error for the operation data unit DU. Furthermore, according to this embodiment, the second inspection unit 342 inspects whether there is an abnormality in the data of the operation data unit DU. Thereby, this embodiment can guarantee that there is no data abnormality in the operation data unit DU.
  • the first transmission request unit 344 requests the transmitter 2 to retransmit the operation data unit DU.
  • the operation data unit DU is determined to be abnormal, before and after the operation data unit DU in which the second transmission request unit 345 determines that the data is abnormal with respect to the transmission device 2 Requesting transmission of the operation data unit DU for Thereby, this embodiment can collect the operation data unit DU from the transmission device 2 when the data of the received operation data unit DU is not authentic or when it is determined that the data is abnormal.
  • the operation data units DU used for diagnosis in the diagnosis apparatus 100 can be appropriately collected.
  • the diagnostic processing can be executed by the diagnostic device 100. In this way, the present embodiment can improve the accuracy of diagnosis in the diagnostic device 100.
  • the third transmission request unit 346 changes the sampling interval or adds a data item.
  • DU can be collected appropriately.
  • the diagnostic processing is executed based on the operation data unit DU in which the sampling interval is changed or the data item is added.
  • this embodiment only when it is determined that there is a sign of abnormality, the sampling interval of the operation data unit DU is changed, or transmission of the operation data unit DU to which the data item is added is requested.
  • this embodiment can collect operation data units DU appropriately, without increasing the data amount of operation data units DU carelessly.
  • the data amount of the operation data unit DU does not increase carelessly in this embodiment, an increase in time required for information processing in the collection system 1 and the diagnostic device 100 can be suppressed.
  • diagnosis device 100 has been described as a device different from the collection device 3, it may be a single device combined with the collection device 3.

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  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
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PCT/JP2017/031534 2016-12-28 2017-09-01 収集装置、収集方法、プログラム及び収集システム Ceased WO2018123143A1 (ja)

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US20200019150A1 (en) 2020-01-16

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