EP3688534A1 - Association automatisée de données de mesure à la surveillance par cloud des actifs mécaniques - Google Patents

Association automatisée de données de mesure à la surveillance par cloud des actifs mécaniques

Info

Publication number
EP3688534A1
EP3688534A1 EP18768775.1A EP18768775A EP3688534A1 EP 3688534 A1 EP3688534 A1 EP 3688534A1 EP 18768775 A EP18768775 A EP 18768775A EP 3688534 A1 EP3688534 A1 EP 3688534A1
Authority
EP
European Patent Office
Prior art keywords
measurement data
cloud
asset
data
measurement
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.)
Withdrawn
Application number
EP18768775.1A
Other languages
German (de)
English (en)
Inventor
Daniel Labisch
Bernd-Markus Pfeiffer
Douglas Weber
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3688534A1 publication Critical patent/EP3688534A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
    • 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—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
    • 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—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80—Management or planning

Definitions

  • the invention relates to a method for assigning measurement data to the cloud-based monitoring of mechanical assets of an industrial plant, in particular manufacturing or Pro ⁇ dulementsstrom, wherein the industrial facility includes a measurement data archive, in which measurement data of a plurality of measuring points, in particular pressure or flow sensors, Furthermore, the invention relates to an associated computer program with computer executable program code instructions according to claim 12, a storage medium according to claim 13 and a computer system according to claim 14.
  • Condition monitoring of mechanical assets of an industrial plant can increase the reliability and productivity of an industrial plant.
  • One aim of the monitoring is to detect wear processes or unfavorable operating conditions at an early stage.
  • effects of signs of wear can be determined and failure risks or remaining service life can be estimated. This allows a targeted planning of maintenance work.
  • the basis for the monitoring is measured data of the corresponding assets, which are determined at different measuring points. For example, stand for a valve as an asset re ⁇ regularly a flow rate, a pressure before and behind the valve and a valve position as the measurement data.
  • relevant metrics such as a flow rate or pressure in front of and behind the asset, must be aggregated for each asset and transferred to the cloud. There can then the Data from the corresponding measuring points can be evaluated by a large number of assets.
  • a monitoring system based on a cloud has the significant advantage that, with a relatively low engineering outlay , a large number of mechanical components can be used
  • Assets can be monitored automatically.
  • a Vorausset ⁇ Zung this is that the need for monitoring measuring points available and the respective asset are allocated.
  • a manual search and assignment of the relevant measurement data for the respective asset carried out so far requires not only access to a corresponding documentation of the industrial plant and a precise knowledge of the process flows of the industrial plant, but also a disproportionately high expenditure of time and personnel.
  • the attributable to the corresponding asset pressure value can often times ⁇ from the pressure in the container or its filling level can be derived. If, in the reverse case, the pipeline discharges into a container, it must be checked at which point of the container this happens. In the case of an open inlet, only the geodetic height of the inlet nozzle of the container may be decisive and the pressure per se may be constant.
  • the R & I schema is in an electronic, machine-readable and object-oriented form so that the relevant measuring points can be found automatically and assigned to corresponding assets.
  • R & ID is in the foreseeable future for each based on a cloud application before ⁇ .
  • a valve assets the data (here, the valve position), which are obtained from the previously described analysis of the valve blocks, not ⁇ reaching.
  • the data here, the valve position
  • the valve ⁇ before nor measured data to the flow rate through the valve and pressure values and needs behind the valve.
  • About Analog ⁇ considerations apply, for example, for a pump where a rotational speed of the pump is only assigned to the corresponding module.
  • the measurement data of the flow rate and pressure values of the two must also still separately (manually) determines the ⁇ .
  • Compiling and assigning the measurement data, which are not assigned to a module has hitherto been done manually, which is very complex and significantly impairs a functionality of a cloud-based monitoring of mechanical assets of an industrial plant.
  • the invention has for its object to provide a method for assigning measurement data for a cloud-based monitoring of mechanical assets that runs fully automated and the effort that must be expended for the assignment and so einherge ⁇ starting, monitoring, compared to the previously known processes significantly reduced.
  • cloud or in other words a cloud computing system, is understood here to mean a server infrastructure of an external cloud provider (external cloud) or a local server hardware within the industrial installation (local cloud).
  • an asset of a certain type is defined, for example a valve or a pump.
  • Each asset is in an industrial plant üb ⁇ SHORT- at least one characteristic measured value associated ⁇ . In a Ventilasset this is usually the valve position.
  • a pump may be, for example, the electric drive power or the speed.
  • a general physical relationship between relevant metrics of different measurement sites is known and stored in the cloud.
  • a valve set for example, there is a physical relationship between a flow rate through the valve, the previously mentioned valve position and a pressure difference before and after the valve.
  • This general physical relationship in other words ei ⁇ ne physical equation is read out from the cloud and used for the further allocation method as a reference.
  • the physical relationship is referred to below only as an equation.
  • the equation has at its ERAL ⁇ NEN form unknown parameters, which in the next
  • Step of the method according to the invention can be estimated.
  • the characteristic value associated with the particular type of asset is included in the estimation, in the case of the valve assembly accordingly the valve position.
  • the unknown parameters are then estimated using well-known estimation methods such as the minimization of the error squares stepwise from the stored in the measurement data archive ⁇ metered data, which in each case for the particular asset in question, ie the asset may be assigned.
  • R sum t (F (X (t), p)) A 2 (1) are calculated, where sum_t stands for a time-cumulative function.
  • sum_t stands for a time-cumulative function.
  • the estimation method for determining the unknown parameters of the equation is carried out step by step with all possible measurement data stored in the measurement data archive. In each case, the residual of the measured data of a measured variable is determined and, as explained above, statistically evaluated.
  • the estimation can be carried out in succession for the respective measuring data of a measuring point or, in the case of a correspondingly existing calculation architecture, also in parallel.
  • the assignment method according to the invention is based on the knowledge that measured data of a specific measuring point then leads to a small deviation, ie a small residual. lead to, if they have a reference to the respective measuring point or the particular mechanical asset, so it is the sought-after measured variable. Otherwise, the physical equation can not plausibly describe the behavior shown in the measured data, so that there are large deviations between the measured data and the parameterized physical equation or a large residual occurs.
  • the method according to the invention allows relevant measurement data or measuring points within an industrial plant to be automatically assigned to particular assets, in particular mechanical, electromechanical or electrical, in order to be able to carry out effective and resource-saving monitoring of the assets.
  • the amount of the measurement data transmitted to the cloud for carrying out the estimates is reduced by considering only measurement data that has a specific physical unit. If, for example, a pressure sensor of a valve is first sought, only measurement data for the further evaluation will be provided taken into account, which a pressure unit, for example, bar, is assigned. As a result, the amount of data to be examined can be significantly reduced, which accelerates the process as a whole.
  • the measurement data are checked to see whether they are even suitable for a specific type of measurement site.
  • a time dependence of the measured data will be particularly ⁇ seeks.
  • statistical values such as mean values, Me ⁇ diane, variances, offsets and the like can be used in the plausibility check. If, for example, data are sought from pressure sensors in the vicinity of a valve, a temporal behavior of the measured data can be informative. If the measured data of a specific measuring point are constant in a period in which a position of the valve and a flow rate through the valve change, the measured data investigated can not be a valve outlet pressure.
  • the measurement data are stored in the measurement data archive of the industrial plant and either completely or cyclically transferred to an internal cloud.
  • an internal cloud embodied as local server hardware within the industrial installation
  • subsequently only the measurement data deemed relevant for the asset monitoring are transmitted to the (external) Transfer cloud.
  • a controller module may, for example, be a PID controller.
  • a control variable profile is found, for example, on a controller module that exactly matches a position profile of a valve under consideration stored in the measurement data archive or the cloud, then the controller module is the process controller controlling the valve.
  • the subsequent determination of the physical unit of the respective measured data and the name of the associated measuring point provides information about which
  • the controller type is the previously found controller block. For example, if the physical unit is "mass or volume per time” and the term is "flow”, then It is a flow regulator that affects the flow through the valve.
  • the pressure is usually controlled by the valve. This is very responsive to Ventilbewegun ⁇ gen, which is reflected in the timing of associated measurement data.
  • the pressure is regelmä ⁇ SSIG regulated upstream of the valve.
  • the pressure typically reacts more slowly to the valve movements. Based on these constraints, the measurement data can be easily and automatically assigned to a specific controller of a particular asset.
  • Assettyp associated characteristic variable the controlled variable associated with the control block and stored in the cloud historical measurement data
  • the first variable "valve position” is obtained by the selection of the specific asset (in this case: valve set.)
  • the second variable "flow rate” is obtained. determined.
  • the amount of data transmitted to the cloud for carrying out the estimations is reduced by considering only measurement data that has a specific physical unit. For example, initially, a pressure sensor of a valve searched, only measurement data for further evaluation from ⁇ be considered where a printing unit, example ⁇ as cash is allocated. As a result, the amount of data to be examined can be significantly reduced, which as a whole accelerates the process.
  • the measurement data are checked to see whether they are even suitable for a specific type of measurement site.
  • a time dependence of the measured data will be particularly ⁇ seeks.
  • statistical values such as mean values, Me ⁇ diane, variances, offsets and the like can be used in the plausibility check.
  • a temporal behavior of the measured data can be informative. If the measurement data of a certain measuring point in a spectrum of conditions in which to change a position of the valve and a flow through the Ven ⁇ til, so it can not be in the investigated measurement data to a valve outlet pressure. The measurement data of certain measuring points, which are considered implausible, are then no longer considered for further evaluation.
  • only a portion of the industrial plant preferably only a certain procedural technical unit (eg distillation column, Rhackkes ⁇ selreaktor, fermenter) is considered to identify the measured data with the specific physical unit.
  • the restriction limits the candidate for a particular asset measurement ⁇ data or measuring point significantly, which may increase the allocation accuracy and reduce the need for the mapping process complexity.
  • the measurement data before the start of Alloc ⁇ drying process be divided into training data and validation data, whereby the assignment method further can im- fibers. If measurement data of a measuring point not belonging to a particular asset are used to parameterize the physical equation, the deviation of the validation data is even higher than without subdivision of the measured data. This makes it even easier to assign the measured data to a specific asset.
  • a user of the industrial plant are automated proposals for an allocation of individual measured data on specific assets submitted after completion of Zu glovessver ⁇ proceedings.
  • the user has to go through any long signal lists, but gets a single assignment as a result of the automated Zu glovessprozes ⁇ ses presented. This can be ensured with reasonable additional effort that no asset monitoring system is put into operation, which has incorrect assignments of Messstel len to assets.
  • the described method with its embodiments is preferably implemented in software.
  • the previously recycle ⁇ th object is solved accordingly by a computer program with computer-executable program code instructions for implementing the method according to the invention.
  • the computer may be, for example, an automation ⁇ s ists réelle with a processing unit by way of a processor or the like.
  • An automation device in particular a Industrieautoma ⁇ thnes réelle on which such a computer program is in ⁇ plemented, is an example of a computer system to which the invention likewise relates.
  • the automation device and standard computers as they are common in office automation, come into consideration.
  • the computer program for implementing the method is usually held on or in a storage medium, that is, for example, on a magnetic or optical data carrier or in a semiconductor memory, so that the invention also a storage medium with a computer-executable computer program for implementing the method and its Embodiments relates.
  • Valve asset associated with measurement data and 2 shows the characteristics of the valve assets with not belonging to the valve asset measurement data.
  • a method according to the invention is explained using the example of a valve asset. There is no question that the method can also be applied to other mechanical, electromechanical or electrical assets.
  • either all measurement data or at least a subset of the measurement data is transferred from the measurement data archive into the cloud, in order to allow fast and location-independent access to the data. It can be an internal or an external cloud (outside the industrial plant).
  • Controller modules are PID controllers. It can be assumed that most of the valve assets contained in the industrial plant also have corresponding control modules.
  • the data of all manipulated variables of the controller blocks are compared with the setpoint valve positions of the valve blocks.
  • the target valve positions are in the industrial plant, for example, in the measurement ⁇ data archive, or deposited in the cloud itself. If, during the comparison, a control value curve is found on a controller module that exactly matches a setpoint curve of a valve under consideration stored in the measurement data archive or the cloud, then the controller module is the process controller controlling the valve.
  • a subsequent determination of the physical unit of the respective measurement data and the name of the associated measuring point provides information about which
  • Controller type is the previously found controller block is. For example, if the physical unit is "mass or volume per time” and the term is “flow,” it is a flow regulator for flow through the valve.
  • the pressure after the valve is regulated. This responds very quickly to valve movements, which is reflected in the time course of the associated measurement data.
  • the pressure In a pressure control in a container by means of an exhaust valve, however, the pressure is regularly regulated before Ven ⁇ til. Here, the pressure typically respond more slowly due to the buffer capacity of the container to the Ven ⁇ til Gayen. Based on these constraints, the measurement data can be easily and automatically assigned to a specific controller of a particular asset. In the present embodiment is for the valve a
  • Flow controller has been found, so that two more pressure values (before and after the valve) must be found in order to fully map the valve behavior can.
  • the amount of measurement data transmitted to the cloud is reduced by considering only measurement data that has a specific physical unit. In this case, pressure sensors of the valve are searched. Therefore, only data for further evaluation are taken into account, which is associated with a printing unit at ⁇ play as cash. As a result, the amount of data to be examined can be significantly reduced, which accelerates the process as a whole. This is followed by a plausibility check of the previously filtered measurement data. These are checked to see if they are even suitable for a pressure sensor. In particular, a temporal dependency of the measured data is used considered.
  • the measurement data of certain measuring points are then no longer considered for further evaluation.
  • the measurement data of the valve position and the flow are assigned to the valve asset, but the measurement data of the pressure in front of and behind the valve are not yet assigned. All measurement data are physically related and can be related by an equation stored in the cloud. Unknown parameters of this equation can be estimated using the measured data transmitted to the cloud by known methods, such as minimizing the least squares error. All possible measurement data of pressure signals are permuted and a parameter set is learned for all combinations.
  • FIG. 1 shows a characteristic field 1 of the valve. Shown is the relationship between the flow (in cubic meters per hour), the valve opening (in percent) and the Druckdif ⁇ conference before and after the valve (in bar).
  • individual data points 2 of the measurement data of a pressure sensor to be assigned are shown. It is easy to see that the deviation of the data points from the (nominal) characteristic field is very small, ie the data points in other words fit very well into the characteristic field.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Evolutionary Computation (AREA)
  • Medical Informatics (AREA)
  • Data Mining & Analysis (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Computer Vision & Pattern Recognition (AREA)

Abstract

L'invention concerne un procédé d'association de données de mesure destinées à la surveillance par Cloud, en particulier des actifs mécaniques d'une installation industrielle. L'installation industrielle comprend une archive de données de mesure dans laquelle des données de mesure d'une pluralité de points de mesure, en particulier de capteurs de pression ou débitmètres, sont mémorisées. Le procédé d'association comprend : la détermination d'un actif qui comporte un type déterminé, en particulier une vanne ou une pompe, l'actif étant associé dans le Cloud à une grandeur de mesure caractéristique au point de mesure correspondant; la lecture d'une relation physique générale, mémorisée dans le Cloud pour le type d'actif déterminé, entre les grandeurs de mesure, pertinentes pour de type d'actif déterminé, de différents points de mesure; l'estimation progressive des paramètres de la relation physique, y compris la grandeur de mesure caractéristique associée au type d'actif déterminé et les données de mesure mémorisées dans l'archive de données de mesure des grandeurs de mesure concernées pour l'actif concerné; la comparaison progressive de la relation physique préalablement déterminée avec les données de mesure à estimer et la détermination d'une valeur résiduelle; l'association des données de mesure à un actif spécifique sur la base d'une évaluation statistique de la valeur résiduelle déterminée.
EP18768775.1A 2017-09-29 2018-08-22 Association automatisée de données de mesure à la surveillance par cloud des actifs mécaniques Withdrawn EP3688534A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17194030.7A EP3462262A1 (fr) 2017-09-29 2017-09-29 Affectation automatisée de données de mesure à une surveillance basée sur un nuage d'actifs mécaniques
PCT/EP2018/072647 WO2019063213A1 (fr) 2017-09-29 2018-08-22 Association automatisée de données de mesure à la surveillance par cloud des actifs mécaniques

Publications (1)

Publication Number Publication Date
EP3688534A1 true EP3688534A1 (fr) 2020-08-05

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP17194030.7A Withdrawn EP3462262A1 (fr) 2017-09-29 2017-09-29 Affectation automatisée de données de mesure à une surveillance basée sur un nuage d'actifs mécaniques
EP18768775.1A Withdrawn EP3688534A1 (fr) 2017-09-29 2018-08-22 Association automatisée de données de mesure à la surveillance par cloud des actifs mécaniques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17194030.7A Withdrawn EP3462262A1 (fr) 2017-09-29 2017-09-29 Affectation automatisée de données de mesure à une surveillance basée sur un nuage d'actifs mécaniques

Country Status (4)

Country Link
US (1) US20200225648A1 (fr)
EP (2) EP3462262A1 (fr)
CN (1) CN111149069A (fr)
WO (1) WO2019063213A1 (fr)

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Also Published As

Publication number Publication date
WO2019063213A1 (fr) 2019-04-04
CN111149069A (zh) 2020-05-12
US20200225648A1 (en) 2020-07-16
EP3462262A1 (fr) 2019-04-03

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