WO2018117164A1 - Plant equipment diagnostic system - Google Patents
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- 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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- G—PHYSICS
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- 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
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- 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.
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Abstract
Provided is a plant equipment diagnostic system with which indicators of an abnormality in plant equipment can be suitably detected, while reducing the power consumption of sensor modules and extending the service life of batteries. This plant equipment diagnostic system 1 is equipped with one or more sensor modules 3, and a state diagnosis device 5. Each of the sensor modules 3 is equipped with a state detection sensor 11, 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. When the state diagnosis device 5 diagnoses the plant equipment as being in a normal state and a selection command has not been received, the transmission data selection unit 21 selects the output from the data conversion unit 19 as transmission data, and when a selection command from the state diagnosis device 5 is received, the output from the data reading unit 17 is selected as transmission data.
Description
本発明は、１台以上のセンサモジュールから送信されてくる送信データに基づいて、プラント設備の状態を診断するプラント設備診断システムに関するものである。
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.
プラント設備に無線通信機能付きの１台以上のセンサモジュールを装着し、プラント設備の状態を監視するプラント設備診断システムが開発されている。例えば、特開２００３－１３１７３５号公報（特許文献１）では、プラント設備等の監視対象機器（１）にセンサモジュール（２）を装備し、検出情報を中央管理装置（３）に送信して、監視対象機器の監視を行っている。
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. For example, in Japanese Patent Laid-Open No. 2003-131735 (Patent Document 1), 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.
プラント設備診断システムに用いるセンサモジュールは、多くの場合、バッテリを電源として動作する。センサモジュールを設置する場所は作業者が立ち入りにくい場所も多く、プラント設備診断システムの信頼性向上のためには、バッテリ交換等のメンテナンスの必要性を低減させることが重要である。特開２００３－１３１７３５号公報（特許文献１）でも、センサモジュールの方で監視対象機器が正常か否かを判定して、正常なときには信号の送信を行わずに、異常なときに信号を送信するようにして、センサモジュールの消費電力を低減している。
In many cases, a sensor module used in a plant equipment diagnosis system operates using a battery as a power source. Many places where the sensor module is installed are difficult for workers to enter, and it is important to reduce the need for maintenance such as battery replacement in order to improve the reliability of the plant equipment diagnosis system. 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.
しかしながら、特開２００３－１３１７３５号公報（特許文献１）のように、センサモジュール側で、プラント設備の異常診断を行うようにする場合には、センサモジュールの消費電力の低減には限界がある。
However, as in 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.
本発明の目的は、センサモジュールの消費電力を低減し、バッテリの寿命を延ばしながら、適切にプラント設備の異常の予兆を検知することが可能なプラント設備診断システムを提供することにある。
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.
本発明のプラント設備診断システムは、プラント設備に装着された、バッテリを電源として動作する無線通信機能付きの１台以上のセンサモジュールと、１台以上のセンサモジュールから送信されてくる送信データに基づいて、プラント設備の状態を診断する状態診断装置とを備えている。
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.
状態診断装置は、送信データに基づいてプラント設備が正常状態にあるか、正常状態から異常状態に移行する過程にあるかを判断して、正常状態から異常状態に移行する過程にあると判断した場合に、１台以上のセンサモジュールに選択指令を送信するように構成されている。
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.
１台以上のセンサモジュールのそれぞれは、プラント設備の被装着部の物理的状態を検知する状態検知センサと、状態検知センサが検知した検知データを記憶するデータ記憶部と、データ記憶部に記憶された検知データを読み出して送信データを出力するデータ読出部と、データ記憶部に記憶された所定期間の検知データを通信に適したデータ量に変換して送信データとして出力するデータ変換部と、状態診断装置からの選択指令に応じて、データ読出部の出力とデータ変換部の出力のどちらを送信するのかを選択する送信データ選択部と、送信データを送信する送信機能、及び、状態診断装置からの選択指令を受信する受信機能を有する無線通信部とを備えている。そして、センサモジュールの送信データ選択部は、状態診断装置が、プラント設備が正常状態にあることを診断していて選択指令を送信してきていないときは、データ変換部の出力を送信データとして選択し、状態診断装置から選択指令を受信するとデータ読出部の出力を送信データとして選択する。
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, and 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. When the selection command is received from the state diagnosis device, the output of the data reading unit is selected as transmission data.
本発明によれば、センサモジュールの側では、プラント設備の状態の診断は行わず、状態診断装置の側でプラント設備の状態の診断を行うため、センサモジュールの消費電力を抑えることができる。また、プラント設備が正常状態にある場合には、通信に適したデータ量に変換されたデータ変換部の出力を送信データとして送信し、選択指令を受信すると、すなわち、プラント設備が正常状態から異常状態に移行する過程にあると判断された場合に、データ読出部の出力を送信データとして送信するように構成されている。そのため、本発明によれば、正常時にはデータ量を減らしてセンサモジュールの消費電力を抑え、データ量を減らした送信データに基づいた簡易な診断を行い、異常を検知した時には、状態検知センサが検知した検知データそのものを送信することで詳細な状態診断を行うことができる。
According to the present invention, since the state of the plant equipment is not diagnosed on the sensor module side, and the state of the plant equipment is diagnosed on the state diagnostic apparatus side, the power consumption of the sensor module can be suppressed. In addition, when the plant equipment is in a normal state, 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. When it is determined that the process is shifted to the state, the output of the data reading unit is transmitted as transmission data. Therefore, according to the present invention, 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.
データ記憶部に記憶された所定期間の検知データを通信に適したデータ量に変換する手法は任意である。例えば、状態検知センサの検知データを一定周波数帯内で二乗平均平方根（ＲＭＳ：Root Mean Square）処理することによりデータ量を減少するようにしてもよい。ＲＭＳ処理をすれば、時間と状態検知センサの出力の二次元データを、一次元化することができ、効果的にデータ量を減らすことができる。
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. For example, 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.
状態診断装置は、診断結果を表示装置により表示するように構成されていてもよい。さらに、状態診断装置は、診断結果をシステム管理者の携帯端末に無線で送信する機能を有していてもよい。このように構成すれば、プラント設備の管理者は、表示装置や携帯端末に表示された診断結果を見て、直ちに修理等の対応を行うことができる。
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 | correspond to repair etc. immediately, seeing the diagnostic result displayed on the display apparatus or the portable terminal.
センサモジュールは、全ての部材を１つのケース内に収納して構成してもよいが、センサ部とセンサモジュール本体部の２つに分けて構成してもよい。分けて構成する場合には、状態検知センサは、外面に永久磁石を備えたセンサ取付ブロック内に収納して、センサ部として、永久磁石の磁力によりプラント設備に装着するようにすればよい。このように構成すれば、センサ部をプラント設備の適切な箇所に設置し、振動等の影響を受けないように、センサモジュール本体部をセンサ部から離して設置することが可能となる。
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. In the case of separate configuration, 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.
状態検知センサとしては、温度センサ、湿度センサ、加速度センサ、角速度センサ等の各種センサや、これらの組み合わせが考えられる。プラント設備の異常は、振動として現れることが多いため、少なくとも加速度センサを含むようにすれば、プラント設備の振動を検知することが可能となる。
As the state detection sensor, 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.
状態診断装置は、１台以上のセンサモジュールから送信データを受信する無線通信部と、無線通信部で受信した送信データを時系列で記憶する受信データ記憶部と、受信データ記憶部に記憶された時系列のデータを物理的・統計的に分析するデータ分析部と、データ分析部の分析結果からプラント設備の状態変化を検出する状態変化検出部と、状態変化検出部の検出結果に基づいて、プラント設備の状態が正常であるか、プラント設備が正常状態から異常状態に移行する過程にあるかを判定する状態判定部とを備えるようにしてもよい。
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.
以下、図面を参照して、本発明のプラント設備診断システムの実施の形態を詳細に説明する。図１は、センサモジュール３と、状態診断装置５を含むプラント設備診断システム１の実施の形態の概念図であり、図２は、センサモジュール３の構成を示すブロック図であり、図３は、センサモジュール３が出力する送信データの例を示す図であり、図４は、状態診断装置５の構成を示すブロック図である。
Hereinafter, an embodiment of a plant equipment diagnosis system of the present invention will be described in detail with reference to the drawings. 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, and FIG. FIG. 4 is a diagram illustrating an example of transmission data output from the sensor module 3, and FIG. 4 is a block diagram illustrating a configuration of the state diagnosis device 5.
プラント設備診断システム１は、プラント設備（図示せず）に装着された、バッテリを電源として動作する無線通信機能付きの１台以上のセンサモジュール３（センサモジュール３ａ，３ｂ，３ｃ・・・）と、センサモジュール３から送信されてくる送信データに基づいて、プラント設備の状態を診断する状態診断装置５とから構成されている。
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.
［センサモジュール］
センサモジュール３のそれぞれは、大きく分けて、センサ部７と、センサモジュール本体部９とから構成されている。センサ部７とセンサモジュール本体部９は、有線で接続されており、センサ部７の電力は、センサモジュール本体部９の側から供給されている。センサ部７とセンサモジュール本体部９は、無線で接続されていてもよいのはもちろんである。 [Sensor module]
Each of thesensor 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. Of course, the sensor unit 7 and the sensor module main body unit 9 may be connected wirelessly.
センサモジュール３のそれぞれは、大きく分けて、センサ部７と、センサモジュール本体部９とから構成されている。センサ部７とセンサモジュール本体部９は、有線で接続されており、センサ部７の電力は、センサモジュール本体部９の側から供給されている。センサ部７とセンサモジュール本体部９は、無線で接続されていてもよいのはもちろんである。 [Sensor module]
Each of the
センサ部７は、状態検知センサ１１と、状態検知センサ１１を収納するセンサ取付ブロック１３とから構成されている。状態検知センサ１１は、本実施の形態では、プラント設備の振動を検知するための（３軸）加速度センサである。センサ取付ブロック１３は、外面に永久磁石を備えており、センサ部７は、センサ取付ブロック１３の永久磁石によって、プラント設備に装着される。
The sensor unit 7 includes a state detection sensor 11 and a sensor mounting block 13 that houses the state detection sensor 11. In the present embodiment, 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.
センサモジュール本体部９は、データ記憶部１５と、データ読出部１７と、データ変換部１９と、送信データ選択部２１と、無線通信部２３とを備えている。データ記憶部１５は、状態検知センサ１１が検知した検知データを記憶する。
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.
データ読出部１７は、データ記憶部に記憶された検知データを読み出して送信データを出力する。この場合の送信データをグラフに図示すると、図３（Ａ）のように、横軸が時間、縦軸が出力（電圧）の二次元データとなる。
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.
データ変換部１９は、データ記憶部１５に記憶された所定期間の検知データを通信に適したデータ量に変換して送信データとして出力する。本実施の形態では、状態検知センサの検知データを一定周波数帯内で二乗平均平方根（ＲＭＳ：Root Mean Square）処理することによりデータ量を減少する。この場合の送信データは、図３（Ｂ）に示すように、［Ｇｒｍｓ］（時間変化する加速度（Ｇ）の平均的な大きさを表す単位）となり、一次元データとなる。
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. In the present embodiment, 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. As shown in FIG. 3B, the transmission data in this case is [Grms] (unit representing the average magnitude of time-varying acceleration (G)), which is one-dimensional data.
送信データ選択部２１は、状態診断装置５からの選択指令及び復帰指令に応じて、データ読出部１７の出力とデータ変換部１９の出力のどちらを送信するのかを選択する。データ変換部１９の出力は、データ読出部１７の出力と比べてデータ量が少ないため、データ変換部１９が選択されている場合には、センサモジュール３の消費電力を抑えることができる。
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.
無線通信部２３は、送信データを送信する送信機能、及び、状態診断装置からの選択指令及び復帰指令を受信する受信機能を有する。無線通信部２３で使用する無線通信規格は任意であるが、本実施の形態では、ＬＰＷＡ（Low Power, Wide Area）と呼ばれる広域の無線通信が利用可能である。ＬＰＷＡは、通信距離が長いもので数ｋｍにも及びながら通信電力が非常に低く、電池で動作するセンサモジュールでの利用に有利なことが特徴である。そのため、ＬＰＷＡを利用することで、センサモジュール群が広いプラント設備に設置された場合でも、センサモジュール３と状態診断装置５の間に中継器等を介在させる必要がなくなり、また、センサモジュール３の消費電力を抑えることができる。
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 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.
［状態診断装置］
状態診断装置５は、プラント設備に異常が発生してから対処することを目的とするものではなく、プラント設備が正常状態から異常状態に移行する過程にあるかを判断して、異常の予兆を検知することを目的とするものである。 [Status diagnosis device]
Thecondition 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.
状態診断装置５は、プラント設備に異常が発生してから対処することを目的とするものではなく、プラント設備が正常状態から異常状態に移行する過程にあるかを判断して、異常の予兆を検知することを目的とするものである。 [Status diagnosis device]
The
状態診断装置５は、無線通信部２５と、受信データ記憶部２７と、データ分析部２９と、状態変化検出部３１と、状態判定部３３とを備えている。無線通信部２５は、１台以上のセンサモジュール３から送信データを受信する。受信データ記憶部２７は、無線通信部２５で受信した送信データを時系列で記憶する。データ分析部２９は、受信データ記憶部２７に記憶された時系列のデータ読み出し、物理的・統計的に分析する。状態変化検出部３１は、データ分析部２９の分析結果からプラント設備の状態変化を検出する。本実施の形態では、プラント設備の振動を加速度センサで検知し、その出力に基づいて、プラント設備の状態変化を検出している。そして、状態判定部３３が、状態変化検出部３１の検出結果に基づいて、プラント設備の状態が正常であるか、プラント設備が正常状態から異常状態に移行する過程にあるかを判定する。
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.
本実施の形態では、状態判定部３３には、予め、正常状態の同じプラント設備、または、同タイプのプラント設備の振動を計測して得られた正常振動データに基づいて予め定めた閾値範囲もしくは閾値判定のための演算式が記憶されている。状態判定部３３は、現在の振動と正常振動データの乖離度、及び、プラント設備の現在の振動が、閾値範囲内に収まっているか否かを判断することで、プラント設備が正常状態から異常状態に移行する過程にあるか否かを判定している。プラント設備の現在の振動が、この閾値範囲を逸脱している状態が、異常状態である。
In the present embodiment, 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.
［フローチャート］
次に、図５及び図６を用いて、本実施の形態のセンサモジュール３と、状態診断装置５の動作を説明する。図５は、センサモジュール３の動作を示すフローチャートであり、図６は、状態診断装置５の動作を示すフローチャートである。 [flowchart]
Next, the operation of thesensor module 3 of this embodiment and the state diagnosis device 5 will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart showing the operation of the sensor module 3, and FIG. 6 is a flowchart showing the operation of the state diagnosis device 5.
次に、図５及び図６を用いて、本実施の形態のセンサモジュール３と、状態診断装置５の動作を説明する。図５は、センサモジュール３の動作を示すフローチャートであり、図６は、状態診断装置５の動作を示すフローチャートである。 [flowchart]
Next, the operation of the
まず、スタート時点では、プラント設備が正常状態であるとすると、センサモジュール３の送信データ選択部２１は、データ変換部１９を選択し（ステップＳＴ１）、状態診断装置５から選択指令があるまでは、繰り返し、二乗平均平方根データ（Ｇｒｍｓ）を送信する（ステップＳＴ２、ステップＳＴ３）。このようにして、プラント設備が正常状態の間は、データ変換部１９の出力を送信データとして送信することで、センサモジュール３の消費電力を抑えることができる。
First, assuming that the plant equipment is in a normal state at the start time, 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). Thus, while the plant equipment is in a normal state, the power consumption of the sensor module 3 can be suppressed by transmitting the output of the data converter 19 as transmission data.
状態診断装置５は、センサモジュール３のデータ変換部１９の出力である送信データを受信し（ステップＳＴ１０１）、受信する度に、データ分析部２９、状態変化検出部３１、状態判定部３３が繰り返しデータ分析（ステップＳＴ１０２）、及び、判定を行う（ステップＳＴ１０３）。この判定は、二乗平均平方根データに基づく簡易な判定である。状態判定部３３が、プラント設備が正常状態から異常状態に移行する過程にあると判定すると、状態診断装置５は、センサモジュール３に対して選択指令を出力する（ステップＳＴ１０４）。同時に、状態診断装置５は図示しない表示装置に診断結果を表示し、また、診断結果をシステム管理者の携帯端末に無線で送信する。
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. When the state determination unit 33 determines that the plant equipment is in the process of shifting from the normal state to the abnormal state, the state diagnosis device 5 outputs a selection command to the sensor module 3 (step ST104). At the same time, 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.
センサモジュール３が選択指令を受信すると、送信データ選択部２１は、データ読出部１７を選択し（ステップＳＴ４）、状態診断装置５から次の選択指令（復帰指令）があるまでは、繰り返し、データ読出部１７の出力を送信する（ステップＳＴ５、ステップＳＴ６）。
When the sensor module 3 receives the selection command, 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).
状態診断装置５は、センサモジュール３のデータ読出部１７の出力である送信データを受信する（ステップＳＴ１０５）。データ読出部１７の出力は図３の（Ａ）に示すように連続的なデータであり、データ分析部２９、状態変化検出部３１、及び、状態判定部３３は、受信データに基づく詳細な判定を行う（ステップＳＴ１０６）。同時に、状態診断装置５は図示しない表示装置に診断結果を表示し、また、診断結果をシステム管理者の携帯端末に無線で送信する。
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). At the same time, 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.
システム管理者は、診断結果に基づき、プラント設備の修理や交換の必要性を判断し、適切な処理を行う。処理完了後、システム管理者は、携帯端末から完了通知を通知し、完了通知を受信した状態診断装置５は、復帰指令を出力する（ステップＳＴ１０７）。
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).
詳細な判定結果に基づき、状態判定部３３が異常がないと判定できる場合には、状態診断装置５が自動的に復帰指令を出力することも可能である。
If the state determination unit 33 can determine that there is no abnormality based on the detailed determination result, the state diagnosis device 5 can automatically output a return command.
以上、本発明の実施の形態について具体的に説明したが、本発明はこれらの実施の形態に限定されるものではなく、本発明の技術的思想の範囲内で変更が可能であるのは勿論である。
Although the embodiments of the present invention have been specifically described above, the present invention is not limited to these embodiments, and can of course be modified within the scope of the technical idea of the present invention. It is.
本発明によれば、センサモジュールの消費電力を低減し、バッテリの寿命を延ばしながら、適切にプラント設備の異常の予兆を検知することが可能なプラント設備診断システムを提供することができる。
According to the present invention, it is possible to provide 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.
１ プラント設備診断システム
３ センサモジュール
５ 状態診断装置
７ センサ部
９ センサモジュール本体部
１１ 状態検知センサ
１３ センサ取付ブロック
１５ データ記憶部
１７ データ読出部
１９ データ変換部
２１ 送信データ選択部
２３ 無線通信部
２５ 無線通信部
２７ 受信データ記憶部
２９ データ分析部
３１ 状態変化検出部
３３ 状態判定部 DESCRIPTION OFSYMBOLS 1 Plant equipment diagnostic system 3 Sensor module 5 State diagnostic apparatus 7 Sensor part 9 Sensor module main body part 11 State detection sensor 13 Sensor mounting block 15 Data storage part 17 Data reading part 19 Data conversion part 21 Transmission data selection part 23 Wireless communication part 25 Wireless communication unit 27 Received data storage unit 29 Data analysis unit 31 State change detection unit 33 State determination unit
３ センサモジュール
５ 状態診断装置
７ センサ部
９ センサモジュール本体部
１１ 状態検知センサ
１３ センサ取付ブロック
１５ データ記憶部
１７ データ読出部
１９ データ変換部
２１ 送信データ選択部
２３ 無線通信部
２５ 無線通信部
２７ 受信データ記憶部
２９ データ分析部
３１ 状態変化検出部
３３ 状態判定部 DESCRIPTION OF
Claims (8)
- プラント設備に装着された、バッテリを電源として動作する無線通信機能付きの１台以上のセンサモジュールと、
前記１台以上のセンサモジュールから送信されてくる送信データに基づいて、前記プラント設備の状態を診断する状態診断装置とを備えたプラント設備診断システムであって、
前記状態診断装置は、前記送信データに基づいて前記プラント設備が正常状態にあるか、正常状態から異常状態に移行する過程にあるかを判断して、正常状態から異常状態に移行する過程にあると判断した場合に、前記１台以上のセンサモジュールに選択指令を送信するように構成されており、
前記１台以上のセンサモジュールのそれぞれは、
前記プラント設備の被装着部の物理的状態を検知する状態検知センサと、
前記状態検知センサが検知した検知データを記憶するデータ記憶部と、
前記データ記憶部に記憶された前記検知データを読み出して前記送信データを出力するデータ読出部と、
前記データ記憶部に記憶された所定期間の前記検知データを通信に適したデータ量に変換して前記送信データとして出力するデータ変換部と、
前記状態診断装置からの前記選択指令に応じて、前記データ読出部の出力と前記データ変換部の出力のどちらを送信するのかを選択する送信データ選択部と、
前記送信データを送信する送信機能、及び、前記状態診断装置からの前記選択指令を受信する受信機能を有する無線通信部とを備えており、
前記送信データ選択部は、前記状態診断装置が、前記プラント設備が正常状態にあることを診断していて前記選択指令を送信してきていないときは、前記データ変換部の出力を前記送信データとして選択し、前記状態診断装置から前記選択指令を受信すると前記データ読出部の出力を前記送信データとして選択し、
前記データ変換部は、前記プラント設備の状態が正常なときには、前記状態検知センサの検知データを一定周波数帯内で二乗平均平方根処理することによりデータ量を減少し、
前記状態診断装置は、
前記１台以上のセンサモジュールから前記送信データを受信する無線通信部と、
前記無線通信部で受信した前記送信データを時系列で記憶する受信データ記憶部と、
前記受信データ記憶部に記憶された時系列のデータを物理的・統計的に分析するデータ分析部と、
前記データ分析部の分析結果から前記プラント設備の状態変化を検出する状態変化検出部と、
前記状態変化検出部の検出結果に基づいて、前記プラント設備の状態が正常であるか、前記プラント設備が正常状態から前記異常状態に移行する過程にあるかを判定する状態判定部とを備えていることを特徴とするプラント設備診断システム。 One or more sensor modules with a wireless communication function, which are mounted on plant equipment and operate using a battery as a power source;
A plant facility diagnosis system comprising a state diagnosis device for diagnosing the state of the plant facility based on transmission data transmitted from the one or more sensor modules,
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 is in a process of shifting from a normal state to an abnormal state Is configured to transmit a selection command to the one or more sensor modules,
Each of the one or more sensor modules is
A state detection sensor for detecting the physical state of the mounted part of the plant equipment;
A data storage unit for storing detection data detected by the state detection sensor;
A data reading unit that reads the detection data stored in the data storage unit and outputs the 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 the transmission data;
A transmission data selection unit that selects which of the output of the data reading unit and the output of the data conversion unit is transmitted in response to the selection command from the state diagnosis device;
A wireless communication unit having a transmission function for transmitting the transmission data, and a reception function for receiving the selection command from the state diagnosis device;
The transmission data selection unit selects the output of the data conversion unit as the transmission data when the state diagnosis device has diagnosed that the plant facility is in a normal state and has not transmitted the selection command. And, when the selection command is received from the state diagnosis device, the output of the data reading unit is selected as the transmission data,
When the state of the plant equipment is normal, the data conversion unit reduces the amount of data by performing a root mean square process on the detection data of the state detection sensor within a certain frequency band,
The state diagnosis device
A wireless communication unit that receives the transmission data from the one or more sensor modules;
A reception data storage unit that stores the transmission data received by the wireless communication unit in time series;
A data analysis unit that physically and statistically analyzes time-series data stored in the received data storage unit;
A state change detection unit for detecting a state change of the plant equipment from the analysis result of the data analysis unit;
A state determination unit that determines whether the state of the plant equipment is normal or whether the plant equipment is in a process of shifting from a normal state to the abnormal state based on a detection result of the state change detection unit. A plant equipment diagnosis system characterized by - プラント設備に装着された、バッテリを電源として動作する無線通信機能付きの１台以上のセンサモジュールと、
前記１台以上のセンサモジュールから送信されてくる送信データに基づいて、前記プラント設備の状態を診断する状態診断装置とを備えたプラント設備診断システムであって、
前記状態診断装置は、前記送信データに基づいて前記プラント設備が正常状態にあるか、正常状態から異常状態に移行する過程にあるかを判断して、正常状態から異常状態に移行する過程にあると判断した場合に、前記１台以上のセンサモジュールに選択指令を送信するように構成されており、
前記１台以上のセンサモジュールのそれぞれは、
前記プラント設備の被装着部の物理的状態を検知する状態検知センサと、
前記状態検知センサが検知した検知データを記憶するデータ記憶部と、
前記データ記憶部に記憶された前記検知データを読み出して前記送信データを出力するデータ読出部と、
前記データ記憶部に記憶された所定期間の前記検知データを通信に適したデータ量に変換して前記送信データとして出力するデータ変換部と、
前記状態診断装置からの前記選択指令に応じて、前記データ読出部の出力と前記データ変換部の出力のどちらを送信するのかを選択する送信データ選択部と、
前記送信データを送信する送信機能、及び、前記状態診断装置からの前記選択指令を受信する受信機能を有する無線通信部とを備えており、
前記送信データ選択部は、前記状態診断装置が、前記プラント設備が正常状態にあることを診断していて前記選択指令を送信してきていないときは、前記データ変換部の出力を前記送信データとして選択し、前記状態診断装置から前記選択指令を受信すると前記データ読出部の出力を前記送信データとして選択することを特徴とするプラント設備診断システム。 One or more sensor modules with a wireless communication function, which are mounted on plant equipment and operate using a battery as a power source;
A plant facility diagnosis system comprising a state diagnosis device for diagnosing the state of the plant facility based on transmission data transmitted from the one or more sensor modules,
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 is in a process of shifting from a normal state to an abnormal state Is configured to transmit a selection command to the one or more sensor modules,
Each of the one or more sensor modules is
A state detection sensor for detecting the physical state of the mounted part of the plant equipment;
A data storage unit for storing detection data detected by the state detection sensor;
A data reading unit that reads the detection data stored in the data storage unit and outputs the 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 the transmission data;
A transmission data selection unit that selects which of the output of the data reading unit and the output of the data conversion unit is transmitted in response to the selection command from the state diagnosis device;
A wireless communication unit having a transmission function for transmitting the transmission data, and a reception function for receiving the selection command from the state diagnosis device;
The transmission data selection unit selects the output of the data conversion unit as the transmission data when the state diagnosis device has diagnosed that the plant equipment is in a normal state and has not transmitted the selection command. And when the said selection command is received from the said state diagnostic apparatus, the output of the said data reading part is selected as said transmission data, The plant equipment diagnostic system characterized by the above-mentioned. - 前記データ変換部は、前記プラント設備の状態が正常なときには、前記状態検知センサの検知データを一定周波数帯内で二乗平均平方根処理することによりデータ量を減少する請求項２に記載のプラント設備診断システム。 The plant equipment diagnosis according to claim 2, wherein when the state of the plant equipment is normal, the data conversion unit reduces the data amount by subjecting the detection data of the state detection sensor to root-mean-square processing within a fixed frequency band. system.
- 前記状態診断装置は、診断結果を表示装置により表示するように構成されている請求項２に記載のプラント設備診断システム。 The plant equipment diagnosis system according to claim 2, wherein the state diagnosis device is configured to display a diagnosis result by a display device.
- 前記状態診断装置は、診断結果をシステム管理者の携帯端末に無線で送信する機能を有している請求項２に記載のプラント設備診断システム。 The plant diagnosis system according to claim 2, wherein the state diagnosis device has a function of wirelessly transmitting a diagnosis result to a portable terminal of a system administrator.
- 前記センサモジュールの前記状態検知センサは、センサ取付ブロック内に収納されており、
前記センサ取付ブロックは、外面に永久磁石を備えており、該永久磁石の磁力により前記プラント設備に装着されている請求項２に記載のプラント設備診断システム。 The state detection sensor of the sensor module is housed in a sensor mounting block,
The plant equipment diagnosis system according to claim 2, wherein the sensor mounting block includes a permanent magnet on an outer surface, and is attached to the plant equipment by a magnetic force of the permanent magnet. - 前記状態検知センサは、少なくとも加速度センサを含んでいる請求項２に記載のプラント設備診断システム。 The plant equipment diagnosis system according to claim 2, wherein the state detection sensor includes at least an acceleration sensor.
- 前記状態診断装置は、
前記１台以上のセンサモジュールから前記送信データを受信する無線通信部と、
前記無線通信部で受信した前記送信データを時系列で記憶する受信データ記憶部と、
前記受信データ記憶部に記憶された時系列のデータを物理的・統計的に分析するデータ分析部と、
前記データ分析部の分析結果から前記プラント設備の状態変化を検出する状態変化検出部と、
前記状態変化検出部の検出結果に基づいて、前記プラント設備の状態が正常であるか、前記プラント設備が正常状態から前記異常状態に移行する過程にあるかを判定する状態判定部とを備えている請求項２に記載のプラント設備診断システム。 The state diagnosis device
A wireless communication unit that receives the transmission data from the one or more sensor modules;
A reception data storage unit that stores the transmission data received by the wireless communication unit in time series;
A data analysis unit that physically and statistically analyzes time-series data stored in the received data storage unit;
A state change detection unit for detecting a state change of the plant equipment from the analysis result of the data analysis unit;
A state determination unit that determines whether the state of the plant equipment is normal or whether the plant equipment is in a process of shifting from a normal state to the abnormal state based on a detection result of the state change detection unit. The plant equipment diagnosis system according to claim 2.
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