WO2018117164A1 - Système de diagnostic d'équipement de production - Google Patents

Système de diagnostic d'équipement de production Download PDF

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Publication number
WO2018117164A1
WO2018117164A1 PCT/JP2017/045767 JP2017045767W WO2018117164A1 WO 2018117164 A1 WO2018117164 A1 WO 2018117164A1 JP 2017045767 W JP2017045767 W JP 2017045767W WO 2018117164 A1 WO2018117164 A1 WO 2018117164A1
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WO
WIPO (PCT)
Prior art keywords
state
data
unit
plant equipment
transmission data
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PCT/JP2017/045767
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English (en)
Japanese (ja)
Inventor
任晃 掘田
睦 永瀬
和司 三宅
裕晶 鈴木
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千代田化工建設株式会社
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Application filed by 千代田化工建設株式会社 filed Critical 千代田化工建設株式会社
Publication of WO2018117164A1 publication Critical patent/WO2018117164A1/fr

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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
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

Definitions

  • the present invention relates to a plant equipment diagnosis system that diagnoses the state of plant equipment based on transmission data transmitted from one or more sensor modules.
  • Plant plant diagnostic systems have been developed to monitor the state of plant equipment by mounting one or more sensor modules with wireless communication functions on the plant equipment.
  • a monitoring target device (1) such as a plant facility is equipped with a sensor module (2), and detection information is transmitted to a central management device (3). The monitored device is monitored.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-131735 (Patent Document 1) also determines whether or not the monitoring target device is normal by the sensor module, and does not transmit a signal when it is normal, but transmits a signal when it is abnormal Thus, the power consumption of the sensor module is reduced.
  • Patent Document 1 JP 2003-131735 A (Patent Document 1), there is a limit to the reduction in power consumption of the sensor module when an abnormality diagnosis of plant equipment is performed on the sensor module side.
  • An object of the present invention is to provide a plant equipment diagnosis system capable of appropriately detecting a sign of abnormality of a plant equipment while reducing the power consumption of the sensor module and extending the battery life.
  • the plant facility diagnosis system of the present invention is based on one or more sensor modules with a wireless communication function that are mounted on a plant facility and operate using a battery as a power source, and transmission data transmitted from the one or more sensor modules. And a state diagnosing device for diagnosing the state of the plant equipment.
  • the state diagnosis device determines whether the plant equipment is in a normal state or in a process of shifting from a normal state to an abnormal state based on the transmission data, and determines that it is in a process of shifting from a normal state to an abnormal state In some cases, the selection command is transmitted to one or more sensor modules.
  • Each of the one or more sensor modules is stored in a state detection sensor that detects a physical state of a mounted part of the plant equipment, a data storage unit that stores detection data detected by the state detection sensor, and a data storage unit.
  • a data reading unit that reads out the detected data and outputs transmission data
  • a data conversion unit that converts the detection data stored in the data storage unit into a data amount suitable for communication and outputs the data as transmission data
  • a state In response to a selection command from the diagnostic device, a transmission data selection unit that selects whether to output the output of the data reading unit or the output of the data conversion unit, a transmission function that transmits transmission data, and a state diagnostic device And a wireless communication unit having a receiving function for receiving the selection command.
  • the transmission data selection unit of the sensor module selects the output of the data conversion unit as transmission data when the state diagnosis device has diagnosed that the plant equipment is in a normal state and has not transmitted a selection command.
  • the output of the data reading unit is selected as transmission data.
  • the power consumption of the sensor module can be suppressed.
  • the output of the data conversion unit converted into a data amount suitable for communication is transmitted as transmission data, and when a selection command is received, that is, the plant equipment is abnormal from the normal state.
  • the output of the data reading unit is transmitted as transmission data.
  • the amount of data is reduced during normal operation to reduce the power consumption of the sensor module, simple diagnosis based on transmission data with reduced data amount is performed, and the state detection sensor detects when an abnormality is detected
  • a detailed state diagnosis can be performed by transmitting the detected data itself.
  • the method of converting the detection data stored in the data storage unit for a predetermined period into a data amount suitable for communication is arbitrary.
  • the amount of data may be reduced by subjecting detection data of the state detection sensor to root mean square (RMS) processing within a certain frequency band. If the RMS processing is performed, the two-dimensional data of the time and the output of the state detection sensor can be made one-dimensional, and the data amount can be effectively reduced.
  • RMS root mean square
  • the state diagnosis device may be configured to display the diagnosis result on the display device. Furthermore, the state diagnosis apparatus may have a function of wirelessly transmitting a diagnosis result to the system administrator's portable terminal. If comprised in this way, the administrator of a plant facility can respond
  • the sensor module may be configured by storing all members in one case, but may be configured by dividing the sensor module into two parts: a sensor unit and a sensor module main body.
  • the state detection sensor may be housed in a sensor mounting block having a permanent magnet on the outer surface and attached to the plant facility as a sensor unit by the magnetic force of the permanent magnet. If comprised in this way, it will become possible to install a sensor part apart from a sensor part so that a sensor part may be installed in a suitable part of plant equipment, and it may not be influenced by vibration etc.
  • various sensors such as a temperature sensor, a humidity sensor, an acceleration sensor, and an angular velocity sensor, and combinations thereof can be considered.
  • Abnormalities in plant equipment often appear as vibrations, and therefore, if at least an acceleration sensor is included, vibrations in the plant equipment can be detected.
  • the state diagnosis apparatus is stored in a wireless communication unit that receives transmission data from one or more sensor modules, a reception data storage unit that stores transmission data received by the wireless communication unit in time series, and a reception data storage unit Based on the data analysis unit that analyzes time-series data physically and statistically, the state change detection unit that detects the state change of the plant equipment from the analysis result of the data analysis unit, and the detection result of the state change detection unit, You may make it provide the state determination part which determines whether the state of a plant equipment is normal, or it exists in the process in which a plant equipment transfers to an abnormal state from a normal state.
  • FIG. 1 is a conceptual diagram of an embodiment of a plant facility diagnosis system 1 including a sensor module 3 and a state diagnosis device 5.
  • FIG. 2 is a block diagram showing a configuration of a sensor module 3.
  • FIG. It is a figure which shows the example of the transmission data which the sensor module 3 outputs.
  • 2 is a block diagram showing a configuration of a state diagnosis device 5.
  • FIG. 3 is a flowchart showing the operation of the sensor module 3.
  • 3 is a flowchart showing the operation of the state diagnosis device 5.
  • FIG. 1 is a conceptual diagram of an embodiment of a plant facility diagnosis system 1 including a sensor module 3 and a state diagnosis device 5
  • FIG. 2 is a block diagram showing a configuration of the sensor module 3
  • FIG. 4 is a diagram illustrating an example of transmission data output from the sensor module 3
  • FIG. 4 is a block diagram illustrating a configuration of the state diagnosis device 5.
  • the plant equipment diagnosis system 1 is equipped with one or more sensor modules 3 (sensor modules 3a, 3b, 3c,...) Equipped with a wireless communication function that operate with a battery as a power source, which is mounted on a plant equipment (not shown).
  • the state diagnosis device 5 is configured to diagnose the state of the plant facility based on transmission data transmitted from the sensor module 3.
  • Each of the sensor modules 3 is roughly composed of a sensor unit 7 and a sensor module main body unit 9.
  • the sensor unit 7 and the sensor module main body 9 are connected by wire, and the power of the sensor unit 7 is supplied from the sensor module main body 9 side.
  • the sensor unit 7 and the sensor module main body unit 9 may be connected wirelessly.
  • the sensor unit 7 includes a state detection sensor 11 and a sensor mounting block 13 that houses the state detection sensor 11.
  • the state detection sensor 11 is a (3-axis) acceleration sensor for detecting the vibration of the plant equipment.
  • the sensor mounting block 13 includes a permanent magnet on the outer surface, and the sensor unit 7 is mounted on plant equipment by the permanent magnet of the sensor mounting block 13.
  • the sensor module main body 9 includes a data storage unit 15, a data reading unit 17, a data conversion unit 19, a transmission data selection unit 21, and a wireless communication unit 23.
  • the data storage unit 15 stores detection data detected by the state detection sensor 11.
  • the data reading unit 17 reads the detection data stored in the data storage unit and outputs transmission data. If the transmission data in this case is illustrated in a graph, as shown in FIG. 3A, the horizontal axis represents time and the vertical axis represents output (voltage) two-dimensional data.
  • the data conversion unit 19 converts the detection data stored in the data storage unit 15 for a predetermined period into a data amount suitable for communication and outputs it as transmission data.
  • the amount of data is reduced by subjecting detection data of the state detection sensor to root mean square (RMS) processing within a certain frequency band.
  • RMS root mean square
  • the transmission data in this case is [Grms] (unit representing the average magnitude of time-varying acceleration (G)), which is one-dimensional data.
  • the transmission data selection unit 21 selects which of the output of the data reading unit 17 and the output of the data conversion unit 19 is transmitted according to the selection command and the return command from the state diagnosis device 5. Since the output of the data conversion unit 19 has a smaller amount of data than the output of the data reading unit 17, the power consumption of the sensor module 3 can be suppressed when the data conversion unit 19 is selected.
  • the wireless communication unit 23 has a transmission function for transmitting transmission data and a reception function for receiving a selection command and a return command from the state diagnosis device.
  • the wireless communication standard used in the wireless communication unit 23 is arbitrary, but in this embodiment, wide-area wireless communication called LPWA (Low Power, Wide Area) can be used.
  • LPWA Low Power, Wide Area
  • LPWA is characterized by a long communication distance and several kilometers, with very low communication power, which is advantageous for use in a battery-operated sensor module. Therefore, by using LPWA, even when the sensor module group is installed in a wide plant facility, there is no need to interpose a repeater or the like between the sensor module 3 and the state diagnosis device 5. Power consumption can be reduced.
  • the condition diagnosis device 5 is not intended to deal with the abnormality after the plant equipment has an abnormality, but judges whether the plant equipment is in the process of shifting from the normal state to the abnormal state, and gives a sign of abnormality. The purpose is to detect.
  • the state diagnosis device 5 includes a wireless communication unit 25, a reception data storage unit 27, a data analysis unit 29, a state change detection unit 31, and a state determination unit 33.
  • the wireless communication unit 25 receives transmission data from one or more sensor modules 3.
  • the reception data storage unit 27 stores transmission data received by the wireless communication unit 25 in time series.
  • the data analysis unit 29 reads the time-series data stored in the received data storage unit 27 and analyzes it physically and statistically.
  • the state change detection unit 31 detects a state change of the plant equipment from the analysis result of the data analysis unit 29. In the present embodiment, the vibration of the plant equipment is detected by an acceleration sensor, and the state change of the plant equipment is detected based on the output. Then, based on the detection result of the state change detection unit 31, the state determination unit 33 determines whether the state of the plant facility is normal or whether the plant facility is in the process of shifting from the normal state to the abnormal state.
  • the state determination unit 33 previously has a threshold range determined in advance based on normal vibration data obtained by measuring vibration of the same plant equipment in the normal state or the same type of plant equipment. An arithmetic expression for threshold determination is stored. The state determination unit 33 determines whether the deviation between the current vibration and the normal vibration data and the current vibration of the plant equipment are within the threshold range, so that the plant equipment is in an abnormal state from the normal state. It is determined whether or not it is in the process of shifting to. A state where the current vibration of the plant equipment deviates from this threshold range is an abnormal state.
  • FIG. 5 is a flowchart showing the operation of the sensor module 3
  • FIG. 6 is a flowchart showing the operation of the state diagnosis device 5.
  • the transmission data selection unit 21 of the sensor module 3 selects the data conversion unit 19 (step ST1) until a selection command is issued from the state diagnosis device 5.
  • the root mean square data (Grms) is transmitted repeatedly (step ST2, step ST3).
  • the state diagnosis device 5 receives the transmission data that is the output of the data conversion unit 19 of the sensor module 3 (step ST101), and each time it is received, the data analysis unit 29, the state change detection unit 31, and the state determination unit 33 repeatedly. Data analysis (step ST102) and determination are performed (step ST103). This determination is a simple determination based on the root mean square data.
  • the state diagnosis device 5 outputs a selection command to the sensor module 3 (step ST104).
  • the state diagnosis device 5 displays the diagnosis result on a display device (not shown), and transmits the diagnosis result wirelessly to the system administrator's portable terminal.
  • the transmission data selection unit 21 selects the data reading unit 17 (step ST4), and repeats the data until there is a next selection command (return command) from the state diagnosis device 5.
  • the output of the reading unit 17 is transmitted (step ST5, step ST6).
  • the state diagnosis device 5 receives the transmission data that is the output of the data reading unit 17 of the sensor module 3 (step ST105).
  • the output of the data reading unit 17 is continuous data as shown in FIG. 3A, and the data analysis unit 29, the state change detection unit 31, and the state determination unit 33 perform detailed determination based on the received data. Is performed (step ST106).
  • the state diagnosis device 5 displays the diagnosis result on a display device (not shown), and transmits the diagnosis result wirelessly to the system administrator's portable terminal.
  • the system administrator determines the necessity of repair or replacement of plant equipment based on the diagnosis result, and performs appropriate processing. After the processing is completed, the system administrator notifies the completion notification from the portable terminal, and the state diagnosis device 5 that has received the completion notification outputs a return instruction (step ST107).
  • the state diagnosis device 5 can automatically output a return command.
  • a plant equipment diagnosis system capable of appropriately detecting a sign of abnormality of plant equipment while reducing the power consumption of the sensor module and extending the battery life.

Abstract

L'invention concerne un système de diagnostic d'équipement de production permettant de détecter de manière appropriée des indicateurs d'une anomalie dans un équipement de production tout en réduisant la consommation d'énergie de modules de capteur et en prolongeant la durée de vie de batteries. Ledit système de diagnostic d'équipement de production (1) est équipé d'au moins un module de capteur (3), et d'un dispositif de diagnostic d'état (5). Ledit module de capteur (3) est équipé d'un capteur de détection d'état (11), d'une unité de stockage de données (15), d'une unité de lecture de données (17), d'une unité de conversion de données (19), d'une unité de sélection de données de transmission (21) et d'une unité de communication sans fil (23). Lorsque le dispositif de diagnostic d'état (5) diagnostique l'équipement de production comme étant dans un état normal et qu'aucune instruction de sélection n'a été reçue, l'unité de sélection de données de transmission (21) sélectionne la sortie de l'unité de conversion de données (19) en tant que données de transmission, et lorsqu'une instruction de sélection est reçue en provenance du dispositif de diagnostic d'état (5), la sortie de l'unité de lecture de données (17) est sélectionnée en tant que données de transmission.
PCT/JP2017/045767 2016-12-21 2017-12-20 Système de diagnostic d'équipement de production WO2018117164A1 (fr)

Applications Claiming Priority (2)

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JP2016-248486 2016-12-21
JP2016248486A JP6663346B2 (ja) 2016-12-21 2016-12-21 プラント設備診断システム

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WO2018117164A1 true WO2018117164A1 (fr) 2018-06-28

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JP7192290B2 (ja) * 2018-07-27 2022-12-20 横河電機株式会社 通信装置およびシステム
JP7475813B2 (ja) * 2019-02-28 2024-04-30 キヤノン株式会社 情報処理システム、生産システム、物品の製造方法、情報処理方法、情報処理装置、プログラム、記録媒体
JP2023006247A (ja) 2021-06-30 2023-01-18 三菱重工エンジン＆ターボチャージャ株式会社 エンジン診断システム、エンジン診断方法、プログラム、データ中継装置およびデータ分析装置

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Publication number Priority date Publication date Assignee Title
JPH10300526A (ja) * 1997-04-24 1998-11-13 Mitsubishi Electric Corp データ表示装置
JP2003131735A (ja) * 2001-10-29 2003-05-09 Tlv Co Ltd 機器監視システム
JP2007241583A (ja) * 2006-03-08 2007-09-20 Hitachi Ltd 力学量測定装置及び方法
JP2009300401A (ja) * 2008-06-17 2009-12-24 Toshiba Corp プラント監視システムおよびプラント監視方法
JP2016163242A (ja) * 2015-03-04 2016-09-05 株式会社日立製作所 データ収集システム、データ収集方法、サーバ及びゲートウェイ

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JP3718427B2 (ja) * 2000-12-15 2005-11-24 株式会社日立製作所 カメラ装置、端末装置及びカメラ監視システム
WO2011135606A1 (fr) * 2010-04-26 2011-11-03 株式会社 日立製作所 Procédé de compression de diagnostic de données en série chronologique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10300526A (ja) * 1997-04-24 1998-11-13 Mitsubishi Electric Corp データ表示装置
JP2003131735A (ja) * 2001-10-29 2003-05-09 Tlv Co Ltd 機器監視システム
JP2007241583A (ja) * 2006-03-08 2007-09-20 Hitachi Ltd 力学量測定装置及び方法
JP2009300401A (ja) * 2008-06-17 2009-12-24 Toshiba Corp プラント監視システムおよびプラント監視方法
JP2016163242A (ja) * 2015-03-04 2016-09-05 株式会社日立製作所 データ収集システム、データ収集方法、サーバ及びゲートウェイ

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