EP4427106A1 - Verfahren zur bewertung des ressourcenverbrauchs einer prozessanlage und prozessanlage - Google Patents
Verfahren zur bewertung des ressourcenverbrauchs einer prozessanlage und prozessanlageInfo
- Publication number
- EP4427106A1 EP4427106A1 EP22817077.5A EP22817077A EP4427106A1 EP 4427106 A1 EP4427106 A1 EP 4427106A1 EP 22817077 A EP22817077 A EP 22817077A EP 4427106 A1 EP4427106 A1 EP 4427106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- resource consumption
- process plant
- consumption
- plant
- 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.)
- Pending
Links
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/418—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]
- G05B19/41885—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 modeling, simulation of the manufacturing system
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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
- 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
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
- G05B23/024—Quantitative history assessment, e.g. mathematical relationships between available data; Functions therefor; Principal component analysis [PCA]; Partial least square [PLS]; Statistical classifiers, e.g. Bayesian networks, linear regression or correlation analysis; Neural networks
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/04—Manufacturing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/418—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]
- G05B19/4184—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 fault tolerance, reliability of production system
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2639—Energy management, use maximum of cheap power, keep peak load low
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31414—Calculate amount of production energy, waste and toxic release
Definitions
- the present invention relates to the field of process monitoring and process control.
- process monitoring and process control In manufacturing processes, treatment processes and other industrial processes in particular, there is a constant desire to optimize energy requirements.
- the previously not uncommon specification of reducing resource consumption by a certain percentage through plant optimization does not do justice to the complexity of process plants.
- the present invention is therefore based on the object of creating a method by means of which a meaningful evaluation of the resource consumption of the process plant is possible, taking into account the complexity of the process plant.
- this object is achieved by the method according to claim 1 .
- the method is a method for evaluating the resource consumption of a process plant.
- the method is a method for evaluating the resource consumption of a production facility or treatment facility.
- the method preferably comprises the following: a) carrying out data acquisition to acquire data relevant to the operation of the process plant, in particular operating data and/or framework data of the process plant; b) Determination, in particular calculation and/or simulation, of a current and/or future resource consumption on the basis of the recorded data using a data model, by means of which correlations are established between the recorded data and/or between the recorded data and a resource consumption of the process plant are; c) Evaluation of a measured resource consumption, in particular by comparing it with the ascertained, in particular calculated and/or simulated, resource consumption.
- Resource consumption is, for example, energy consumption, but it can also be material consumption or other consumption or other use of tangible and intangible cost sources.
- a consumption of resources is therefore in particular also a consumption of operating resources of the process plant, for example in the case of a process plant designed as a painting plant, a paint consumption, a water consumption, a filter aid material consumption, a filter element consumption, etc.
- the use of the data model preferably enables an assessment of the operation of the entire process plant.
- An operator or user of the process plant can preferably determine whether energy consumption is normal, ie within acceptable value ranges, taking into account the current or future process parameters, in particular production parameters, and/or taking into account the current or future weather conditions. Furthermore, it can preferably be determined in this way whether changes in the system operation have led or will lead to more or less energy being consumed. It is preferably even possible to determine what changes in the system operation was or is or will be the cause of the change in energy consumption.
- the data model can also be used to determine whether changes in the system operation are likely to result in resource consumption, in particular energy consumption, changing. In addition, it is preferably possible to determine how severe these changes will be.
- the method is preferably based on a machine learning model that establishes a connection between the data relevant to the operation of the process plant, in particular operating data and/or framework data of the process plant, for example production data, process values, setting parameters and external influencing variables (air temperature, air humidity), on the one hand and the resource consumption on the other hand.
- the data model is trained on historical data, with an assigned resource consumption or at least a connection with a resource consumption preferably being known in each case for the historical data.
- the method includes the following sub-steps:
- one or more of the following data is preferably acquired, in particular measured or determined in some other way:
- Workpiece-related data Type of the respective workpiece, time of treatment or another process, location or position or alignment of the respective workpiece, number of workpieces, process planning, in particular obtained from a production control system, for example the so-called Manufacturing Execution System (MES);
- MES Manufacturing Execution System
- Setting parameters in particular from the process control, for example setpoints for process values and/or meteorological data (in particular temperatures, amount of precipitation, cloud cover and wind speeds (obtained from a process control, a weather station and/or an external database) and other contextual data (in particular the time or times of day). ).
- meteorological data in particular temperatures, amount of precipitation, cloud cover and wind speeds (obtained from a process control, a weather station and/or an external database) and other contextual data (in particular the time or times of day).
- the recorded data are preferably stored and/or evaluated and/or processed.
- the recorded data is processed according to one or more of the following options: the data, in particular the data of the process control, are recorded as time series in a database; the data, in particular the production control data, are recorded in a database partly as time series and partly with reference to the workpiece; the data are cut into time windows and/or aggregated, the length of the time windows preferably being dependent on the inertia of the process, in particular of a treatment process or piece process; Characteristics are derived from the raw data, for example according to one or more of the following options: o Integral'/summation of the consumption and production figures; o Statistical characteristics such as mean values and standard deviations of the process data; o Bin-based statistical characteristics, such as means and parameters of dispersion; o Features from signal analysis such as Fourier and wavelet transforms; o Average energy consumption during a specified or average time window; o Order data per time window, such as type of workpiece,
- pre-processed data sets are preferably created, which can be used as a basis for a machine learning model, in particular in order to be able to establish a connection between detectable influencing variables and the resource consumption, with the connections not having to be known a priori.
- the data model is preferably trained using machine learning methods.
- the data model learns the connection between data model inputs (e.g. the number of bodies, type of bodies, setting parameters, process values, weather conditions, number of derivatives, etc.) and a data model output (in particular resource consumption during a specified or average time window) from aggregated characteristics.
- data model inputs e.g. the number of bodies, type of bodies, setting parameters, process values, weather conditions, number of derivatives, etc.
- a data model output in particular resource consumption during a specified or average time window
- the trained data model is preferably able to determine the theoretical resource consumption from the measured data model inputs on the basis of the relationships learned from the historical data.
- the data model quality depends on the amount of historical data taken into account. The longer the underlying training period, the higher the expected accuracy of the data model.
- the data model can preferably be generalized to other work areas.
- the data model can be designed as a dynamic data model, for example.
- data model inputs and data model outputs from previous points in time are additionally used as data model input or a data model with memory states is used.
- the machine learning method on which the data model is based can be inverted with regard to the data model parameters and/or factors, i.e. the data model parameters can be clearly assigned to the influencing variables as factors.
- the methods used preferably enable this direct interpretability and include, for example, linear regression approaches or decision trees.
- the restriction to machine learning methods that can be interpreted can be advantageous with regard to the step “determination of the parameter influence” (6).
- the data model is preferably able to establish a connection between the influencing variables and the resource consumption. Additional information can preferably be derived from the data model structure, in particular about the influence of the variables on resource consumption, for example energy consumption (see step (6)).
- the basis for a simulation of the current and/or future resource consumption is the trained data model.
- Actual values of the process control and/or the Manufacturing Execution System (MES) and/or a weather station are preferably used as input parameters for the simulation, with the values recorded in this way preferably being aggregated over time windows, in particular using a buffer or a database.
- MES Manufacturing Execution System
- the simulation is in particular an actual simulation of resource consumption, in particular energy consumption.
- a prediction is preferably possible by means of the simulation.
- planned values from a production plan and/or design data and/or weather forecast data are recorded as input data, in particular in order to obtain a prediction of resource consumption, in particular energy consumption.
- a model value of the resource consumption for a time segment or a time window and/or a predicted resource consumption can preferably be provided as an output parameter, in particular for each input parameter or as a function of each input parameter.
- Simulation values that are available during the determination are preferably stored in a database for further processing.
- the actual simulation is preferably carried out regularly at a predefined time interval or when the influencing parameters change, in order to enable continuous monitoring of the resource consumption.
- the result is preferably a time series of the data model's actual resource consumption, which is used for a comparison with the measured resource consumption (see step (4)).
- the prediction i.e. when determining future resource consumption, the following is preferably provided:
- the prediction is an optional process step that can be included in the evaluation.
- the prediction is preferably carried out regularly at a predefined time interval or when the future planning values and/or the forecast weather conditions change, in order to enable continuous monitoring of the future resource consumption.
- the result is preferably a time series of the prediction of resource consumption, which can be used in particular for resource requirements planning and/or as a basis for optimization steps (e.g. for peak load reduction, see step (8)).
- a simulated time series and a measured time series of the resource consumption are preferably compared with one another.
- a difference between the values is formed, with a time series in particular resulting that represents the deviations (delta time series).
- a time series is taken into account when determining, in particular calculating and/or simulating, a current and/or future resource consumption. This can preferably enable a better evaluation, since, for example, dynamic effects can also be taken into account (e.g. an error trend over several days/weeks compared to a rapid increase in the error).
- error patterns in particular resource error patterns, are labeled, in particular manually.
- patterns in the time series of the resource error can be assigned causes.
- a cause for an error can preferably be stored by the user.
- the result of the method step preferably forms a decision-making basis for system changes and/or renewed data model training.
- the plant optimization is preferably carried out manually by a user or plant operator or automatically by a control device.
- An optimization measure that has been carried out can preferably be stored by the user or system operator or automatically, in particular in the data model or a database.
- Parameter influence For example a) to determine, in particular calculation and/or simulation, the current and/or future resource consumption and/or b) to evaluate the measured resource consumption, an influence of the input variables, in particular an influence of the data values and/or data types of the recorded data, determined on resource consumption.
- an influence of the input variables on the resource consumption from the data model, in particular the data model parameters is described by means of correlations, for example by means of factors.
- the correlations, in particular factors can be used to describe how great an influence there is on resource consumption when the weather, the target values and/or the process variables change.
- the influencing factors and their determined importance and/or the determined degree of impact are preferably written to the database and/or the data model after each change and/or after each data acquisition.
- the course of the change in the influencing variables is preferably traceable.
- a relationship, in particular a correlation, can preferably be established between the input variables and/or the influencing factors on the one hand and the resource consumption on the other hand, which is valid over the entire trained period and/or which varies over the entire trained period in such a way that preferably always the best possible determination, in particular calculation and/or simulation, of the current and/or future resource consumption is possible
- a change in the course of the resource consumption in particular a mathematical derivation in the course of the resource consumption, can be checked, in particular analyzed.
- step (4) it is preferably first checked whether the changing resource consumption, in particular energy consumption, is based on influencing parameters that were taken into account by the data model.
- the assessment from step (4) is preferably used for this purpose.
- a statement can preferably be made available as to which parameter has negatively or positively influenced or will influence resource consumption, in particular energy consumption.
- the parameters are preferably optimized, in particular automatically or by manual intervention in the process installation.
- a manual change is made, for example, on the basis of the findings, in particular the statement of the parameter evaluation.
- Automatic parameter optimization takes place, for example, by mathematically solving an optimization problem.
- a production plan and/or target values of the recorded or determined data types and/or data types are optimized using an optimization function.
- the optimization problem to be solved contains, for example, secondary conditions such as: minimum number of workpieces in the process and/or permissible target value ranges, preferably in order to ensure the quality of the workpieces and/or the products to be manufactured.
- an optimization can be carried out on the basis of a dynamic data model, in particular it can be carried out automatically.
- provision can be made for peak load monitoring and/or peak load reduction to take place.
- the switch-on time and/or control parameters of components of the process installation are optimized, in particular always taking into account other components and/or parts of the installation.
- optimization of the control strategy is preferably provided in the present method.
- dynamic driving styles such as a control strategy
- control tolerances may be allowed and/or target value definitions based on the resource consumption parameter assessment may be used.
- resource consumption With the determination, in particular calculation and/or simulation, of a current and/or future resource consumption, it is preferably possible to derive reference values for the resource consumption, which are archived or can be archived in a central database for a system with a specific design/dimensioning. With these reference values, resource consumption can preferably be benchmarked in the case of a similar system design and/or similar system dimensioning.
- the design of the process installation and/or defined energy limits can be optimized with the calculated resource consumption values, in particular energy values.
- the acceptable consumption range preferably results from the determined, in particular calculated and/or simulated, resource consumption.
- the acceptable consumption range is specified by the determined, in particular calculated and/or simulated, resource consumption.
- a manual or automatically triggered open-loop and/or closed-loop control error can be inferred from a rate of change.
- Anomalous behavior or an anomaly is to be understood in particular as meaning that a data point, often referred to as an outlier, is present and/or recorded, the properties of which deviate so greatly from the norm that the suspicion arises that it was generated by a special mechanism and /or it would be the result of a suspicious event.
- a distinction can be made in particular between local anomalies, global anomalies, contextual anomalies and/or collective anomalies.
- Local or global anomalies describe a single data point that deviates too much from the rest of the data points.
- Contextual anomalies differ in the context of one data set while being normal in the context of another data set.
- collective anomalies an entire data subset deviates from the broader dataset; individual data points play no part in identifying collective anomalies.
- an input option is provided for a user, with the user being able in particular to state what resulted in a determined deviation.
- a decision can preferably be made depending on input from the user and/or depending on the conclusion and/or depending on the result of the evaluation be decided automatically, in particular, whether the data model needs to be readjusted, retrained or retrained.
- provision can be made for individual values of the data relevant to the operation of the process installation and/or input values of one or more users of the process installation to be taken into account for the conclusion.
- the data and/or input values relevant to the operation of the process installation can include or be operating parameters of the process installation.
- One or more pieces of data are preferably recorded or used as framework data of the process installation, a) which are independent of components not belonging to the process installation; and/or b) which are independent of the configuration of the process plant and/or of an operating mode of the process plant.
- Frame data is or includes, for example, a current time or time of day or time of day expected at a specific point in time; and/or a current or an expected day of the week; and/or current or forecast weather data; and/or current or anticipated electricity costs and/or material procurement costs and/or material disposal costs.
- the data recorded as part of the data acquisition is prepared and/or processed, for example a) by categorization, in particular by coding of discrete characteristic values; and/or b) by classification into or assignment to time series; and/or c) through statistical evaluation, for example averaging, determination of a standard deviation, determination of scatter parameters, etc.
- the Changes are made in particular while maintaining a certain quality of workpieces (106) and/or of products to be manufactured.
- one or more, in particular all, changes are made automatically by the process system itself, in particular by a control device of the process system, for example after solving an optimization problem as a reaction to the evaluation carried out.
- the present invention relates to the provision of a data model for evaluating the resource consumption of a process plant.
- the object of the invention is to provide a data model by means of which a meaningful assessment of the resource consumption of the process installation is possible, taking into account the complexity of the process installation.
- this object is achieved by the independent method claim, which is directed to the method for providing a data model for evaluating the resource consumption of a process installation.
- the process installation is in particular a production installation or treatment installation, for example a painting installation and/or drying installation for the treatment of workpieces, in particular vehicle bodies.
- the method according to the invention for providing a data model for evaluating the resource consumption of a process installation preferably comprises the following: i) providing historical data of the process installation, which a) previously determined operating data and/or framework data; and b) include previously determined resource consumption data; ii) Creation and/or training of a data model using the historical data, correlations between the operating data and/or framework data determined earlier and the resource consumption data determined earlier being established by means of the data model.
- Correlations are preferably stored in the data model, which describe a degree of the effect of a change in historical data serving as input variables on the degree of the effect on resource consumption.
- a temporal context is preferably taken into account when creating and/or training the data model. This means that preferably a chronological progression and/or a time series of the historical data flows into the data model and/or is mapped in the data model.
- a time series model can be used for processing and/or considering the historical data.
- a future development of the resource consumption data over time can preferably be predicted by taking into account the time context of the historical data.
- the data model is or will preferably be provided according to the method according to the invention for providing a data model.
- the present invention also relates to a process installation, in particular a treatment installation, for example a painting installation and/or a drying installation.
- the invention is based on the object of providing a process installation which is simple in construction and can be operated efficiently.
- this object is achieved by the independent claim directed to a process installation.
- the process system in particular a treatment system, for example a painting system and/or a drying system, preferably includes a control device which is set up and configured such that one or more of the methods described can be carried out on the process plant and/or by means of the process plant.
- the processing plant preferably also has one or more of the features and/or advantages described in connection with the methods.
- plant operators of process plants are preferably able to objectively evaluate and optimize the resource consumption, for example the energy consumption, of their plant.
- the basis for the evaluation and optimization is preferably measurement data and trained operating styles of the system, instead of subjective empirical values of the system operator.
- the system operators preferably know from the method described the main influencing factors on resource consumption and can use this knowledge to optimize resource consumption.
- a resource consumption prediction for example an energy consumption prediction, preferably makes it possible to plan the energy requirement better and to adapt it using knowledge of the influencing factors.
- the method or methods can be transferred to different process systems.
- the data model can preferably be transferred from a process installation to an identical or at least similar process installation. After the transmission, preferably only a fine correction of the data model, in particular the data model parameters, is required by renewed or continued training.
- FIG. 1 shows a schematic representation of a first embodiment of a process plant in which a treatment plant designed as a dip painting plant is provided
- FIG. 2 shows a schematic representation of a second embodiment of a process system, in which a treatment system designed as a drying system is provided
- FIG. 1 shows a schematic representation of a first embodiment of a process plant in which a treatment plant designed as a dip painting plant is provided
- FIG. 2 shows a schematic representation of a second embodiment of a process system, in which a treatment system designed as a drying system is provided
- FIG. 3 shows a schematic perspective sectional view of a conditioning system of a process system
- FIG. 4 is a flow chart illustrating a method for optimizing the operation of a process plant.
- FIG. 5 shows a flowchart to illustrate the data flow when carrying out the method for optimizing the operation of the process plant.
- a first embodiment shown in Fig. 1 of a process system designated as a whole by 100 is or includes, for example, a treatment system 102, in particular a painting system 104, for the treatment of workpieces 106.
- the process installation 100 comprises numerous components which interact with one another in order to be able to successfully carry out a process, for example treatment of a workpiece.
- a treatment tank 108 for example, a treatment tank 108, a conveyor device 110, a heating device 112 and numerous other components are provided which are involved in carrying out a painting process, in particular a dip painting process.
- a control device 114 of the process system 100 is preferably provided for optimal operation of the process system 100, in particular for an optimal treatment result of the workpieces 106.
- One or more components of the process installation 100 can preferably be controlled or regulated by means of the control device 114 .
- process plants 100 is often resource-intensive, in particular energy-intensive.
- control device 114 By means of the control device 114, a resource-saving, in particular energy-saving, mode of operation of the process system 100 be made possible.
- the requirement for electrical energy, heat, fuel, water and/or other consumables of the process plant can preferably be minimized.
- Various data relevant to the operation of the process installation 100 can be recorded, in particular measured or determined in some other way, by means of a recording device 116 shown schematically in FIG. 1 .
- the data relevant to the operation of the process installation 100 are, for example, operating data which directly or indirectly describe a state of workpieces 106 and/or of components and/or operating resources of the process installation 100 .
- Operating data relate, for example, to current energy consumption, in particular a consumption of electrical energy and/or heat for heating a treatment fluid in the treatment basin 108, and/or water consumption.
- Temperatures of the treatment fluid in the treatment tank 108, at a discharge 118 from the treatment tank 108 and/or at a feed line 120 to the treatment tank 108 are recorded as operating data, for example.
- workpiece-related data is recorded as operating data, in particular the spatial dimensions, the surface size, the mass and/or the material of each workpiece 106. It is also possible to record the treatment step in which the respective workpiece 106 is present and/or the number of workpieces 106 is or will be treated simultaneously and/or sequentially at a given point in time and/or in the future.
- parameters such as a target temperature of the treatment fluid and/or a target fill level in the treatment tank 108 must be kept within specified limit values. Therefore, the data that has an influence on these parameters is preferably recorded by means of the recording device 116 . These include, for example, a temperature and/or humidity Ambient air in an area surrounding the treatment tank 108, for example hall air in a hall surrounding the treatment tank 108, is to be understood.
- this is preferably to be understood as meaning a temperature and/or humidity of an external ambient air in an open environment of the process installation 100, for example outside a hall.
- the temperature and/or humidity of the external ambient air is, for example, determined exclusively by the local weather and is therefore preferably recorded as data in order, for example, to be able to correctly condition the external ambient air serving as supply air and to be able to estimate the required resource requirements, in particular energy requirements, as precisely as possible.
- an exhaust air temperature and/or exhaust air humidity of exhaust air discharged from the process plant 100 can be detected.
- parameters of the treatment fluid itself are preferably also recorded as data, in particular an actual temperature of the treatment fluid in treatment basin 108 and/or an actual filling level in treatment basin 108.
- a current or future resource consumption can preferably be determined using the recorded data.
- the data model produces correlations between the recorded data and/or between the recorded data and the consumption of one or more resources of the process installation 100 .
- the current resource consumption is calculated and/or simulated in particular using the data model.
- the current resource consumption is preferably also obtainable by direct measurement or other determination
- a comparison with the resource consumption determined using the data model can take place in a next step. This allows the measured resource consumption to be evaluated, in particular with regard to whether it lies within specified limit values and/or expected values.
- the use of the data model enables the operation of the entire process plant 100 to be evaluated.
- a user or plant operator of the process plant 100 can preferably determine whether energy consumption is normal, taking into account the current process parameters, in particular production parameters, and/or taking into account the current weather conditions is within acceptable ranges of values. Furthermore, it can preferably be determined in this way whether changes in the system operation have resulted in more or less energy being consumed. It is preferably even possible to determine what changes in the system operation was or is the cause of the change in energy consumption.
- the data model can also be used to determine whether changes in the system operation are likely to result in resource consumption, in particular energy consumption, changing. In addition, it is preferably possible to determine how severe these changes will be.
- a treatment system 102 of a process system 100 embodied as a drying system 122 is shown in FIG. 2 .
- the drying system 122 can be part of a second embodiment of a processing system 100 or part of the first embodiment of the processing system 100 and thus, for example, functionally supplement the treatment system 102 from FIG. 1 embodied as a painting system 104 .
- the drying system 122 can be connected to the painting system 104 along a conveyor section of the process system 100 , so that workpieces 106 painted in the painting system 104 can be dried by means of the drying system 122 .
- the drying system 122 preferably includes a treatment room 124, which is accessible via one or more locks 126 and is subdivided in particular into one or more heating zones 128 and/or one or more holding zones 130. Air can be conditioned, in particular heated, cooled, humidified and/or dehumidified, and supplied to the treatment chamber 124 by means of an air system 132 .
- the air system 132 comprises one or more heat exchangers 134, for example for transferring heat, in particular waste heat, to a supply air flow, in particular a fresh air flow.
- the air system 132 preferably includes a heating device 112, which in particular also serves to clean exhaust gases and is designed, for example, as a thermal exhaust gas cleaning device 136.
- the heating device 112 generates a flow of heating gas, which can be supplied in particular to a plurality of air circulation modules 138 in order to supply heat to them.
- Each circulating air module 138 is preferably coupled to a section of the treatment chamber 124, in particular to a respective zone (heating zone 128 and/or holding zone 130) in order ultimately to heat the circulated air in the respective section to a desired temperature.
- the circulating air flows in the circulating air modules 138 and/or in the zones of the treatment room and/or the heating gas flow generated by means of the heating device 112 and/or an exhaust gas flow can preferably be driven by means of one or more fans 140 .
- one or more of the following data is preferably recorded by means of a recording device 116: a) energy consumption, in particular consumption of thermal and/or electrical energy for heating and/or heating the treatment room 124; b) an energy consumption, in particular a consumption of thermal and/or electrical energy for the cooling of workpieces 106 in a cooling zone, which is in particular downstream of the treatment room 124; a consumption of electrical energy to drive the one or more fans 140; c) Workpiece-related data, in particular the spatial dimensions, the surface area, the mass and/or the material of each workpiece 106.
- drying system 122 Specified parameters of the drying system 122, in particular a target temperature in one or more heating zones and/or holding zones and/or cooling zones and/or a target air volume flow to be generated by means of the one or more fans; e) Process values of drying system 122, in particular an actual temperature in one or more heating zones and/or holding zones and/or cooling zones and/or an actual air volume flow generated by the one or more fans and/or a status (on, off, fault) of one or multiple components and/or an actual temperature and/or actual humidity of an exhaust air flow; f) weather data, in particular an actual temperature and/or actual humidity of an external ambient air. It can be advantageous to optimize a conditioning system 142 of the process system 100 in particular when the resource consumption of an air system 132 is to be optimized in order to optimize the process
- Such a conditioning system 142 is shown in a perspective longitudinal section in FIG.
- the conditioning system 142 is, for example, a component of an air system 132, which in turn is, for example, a component of a treatment system 102, in particular a painting system 104 and/or drying system 122.
- a component of a treatment system 102 in particular a painting system 104 and/or drying system 122.
- cabin air and/or workplace air and/or drying air can be conditioned.
- the conditioning system 142 preferably includes a heat exchanger 134, which is used in particular for heat recovery and is designed, for example, as a heat wheel or air-to-air heat exchanger. Furthermore, the conditioning system 142 preferably comprises a cooling register 146 for cooling and/or dehumidifying air, a heating register 148 for heating the air, a humidifier 150 for humidifying the air and one or more filter devices 152 for separating impurities from the air.
- the air can be driven by means of one or more fans 140 .
- one or more silencers 154 can also be provided in order to counteract the development of noise when the conditioning system 142 is in operation.
- one or more of the following data is preferably recorded using a recording device 116: a) energy consumption, in particular consumption of thermal and/or electrical energy for heating and/or heating and/or humidifying and/or or dehumidifying the supplied air, in particular fresh air.
- energy consumption in particular consumption of thermal and/or electrical energy for heating and/or heating and/or humidifying and/or or dehumidifying the supplied air, in particular fresh air.
- an electrical energy consumption of the cooling register 146, the heating register 148, the humidifier 150, in particular of one or more humidifier pumps of the humidifier 150, and/or the fans 140 is recorded; b) workpiece-related data, in particular the spatial dimensions, the surface area, the mass and/or the material of each workpiece 106.
- Specified parameters of the drying system 122 in particular a target temperature and/or target humidity in one or more heating zones and/or holding zones and/or cooling zones and/or a target air volume flow to be generated by means of the one or more fans; d) process values of the drying system 122, in particular an actual temperature and/or actual humidity in one or more heating zones and/or holding zones and/or cooling zones and/or an actual air volume flow generated by means of the one or more fans and/or a status (on, off, Disturbance) of one or more components and/or an actual temperature and/or actual humidity of an intake air flow (in particular fresh air flow) and/or an actual temperature and/or actual humidity of an exhaust air flow; e) weather data, in particular an actual temperature and/or actual humidity of an external ambient air.
- the recorded data is used by the control device 114 using the data model in order to evaluate the resource consumption, the following findings can be obtained and communicated to a user or plant operator of the process plant 100:
- An indication of a possibly permanent energy saving potential can preferably be given here.
- a user or system operator then has to decide whether the lower temperature of the treatment fluid has an impact on the quality of the workpiece treatment. If not, he can decide in favor of the future lower target temperature. Otherwise, a change in system control is made to bring the actual temperature of the treatment fluid within the acceptable range of the setpoint temperature.
- drying system 122 Using the example of the drying system 122:
- the actual heating energy consumption is within the permissible range, taking into account the changing input variables (in particular the higher number of units).
- conditioning system 142 Using the example of the conditioning system 142:
- the method used for optimizing the operation of the process plant 100 is a method for evaluating the resource consumption of the process plant 100.
- the method is preferably based on a machine learning model that establishes a connection between the data relevant to the operation of process plant 100, in particular operating data and/or framework data of process plant 100, for example production data, process values, setting parameters and external influencing variables (air temperature, humidity), on the one hand and the resource consumption on the other hand.
- the data model is trained on historical data, with an assigned resource consumption or at least a connection with a resource consumption preferably being known in each case for the historical data.
- the method includes the following sub-steps:
- one or more of the following data is preferably acquired, in particular measured or determined in some other way:
- Workpiece-related data type of the respective workpiece 106, time of a treatment or other process, location or position or orientation of the respective workpiece 106, number of workpieces 106, process planning, in particular obtained from a production control system, for example the so-called Manufacturing Execution System (MES);
- MES Manufacturing Execution System
- Setting parameters in particular from the process control, for example setpoints for process values and/or meteorological data (in particular temperatures, amount of precipitation, cloud cover and wind speeds (obtained from a process control, a weather station and/or an external database) and other contextual data (in particular the time or times of day). ).
- meteorological data in particular temperatures, amount of precipitation, cloud cover and wind speeds (obtained from a process control, a weather station and/or an external database) and other contextual data (in particular the time or times of day).
- the recorded data are preferably stored and/or evaluated and/or processed.
- the recorded data is processed according to one or more of the following options: the data, in particular the data of the process control, are recorded as time series in a database; the data, in particular the production control data, are recorded in a database partly as time series and partly with reference to the workpiece; the data are cut into time windows and/or aggregated, the length of the time windows preferably being dependent on the inertia of the process, in particular of a treatment process or piece process; Characteristics are derived from the raw data, for example according to one or more of the following options: o Integral'/summation of the consumption and production figures; o Statistical characteristics such as mean values and standard deviations of the process data; o Bin-based statistical characteristics, such as means and parameters of dispersion; o Features from signal analysis such as Fourier and wavelet transforms; o Average energy consumption during a specified or average time window; o Order data per time window, such as type of workpiece
- pre-processed data sets are preferably created, which can be used as a basis for a machine learning model, in particular in order to be able to establish a connection between detectable influencing variables and the resource consumption, with the connections not having to be known a priori.
- the data model is preferably trained using machine learning methods.
- the data model learns the connection between data model inputs (e.g. the number of bodies, type of bodies, setting parameters, process values, weather conditions, number of derivatives, etc.) and a data model output (in particular
- the trained data model is preferably able to determine the theoretical resource consumption from the measured data model inputs on the basis of the relationships learned from the historical data.
- the data model quality depends on the amount of historical data taken into account. The longer the underlying training period, the higher the expected accuracy of the data model.
- the data model can preferably be generalized to other work areas. However, for a statement about the influence of setting parameters on the consumption of resources, it is necessary that different setpoints were approached according to the historical data, see also the step "Determination of the parameter influence" (6).
- a training mode is provided on or in the process installation 100, in particular in order to optimize the data model, for example by using different production numbers and setting parameters.
- the data model can be designed as a dynamic data model, for example.
- data model inputs and data model outputs from previous points in time are additionally used as data model input or a data model with memory states is used.
- the machine learning method on which the data model is based can be inverted with regard to the data model parameters and/or factors, i.e. the data model parameters can be clearly assigned to the influencing variables as factors.
- the methods used preferably enable this direct interpretability and include, for example, linear regression approaches or decision trees.
- the restriction to machine learning methods that can be interpreted can be advantageous with regard to the step “determination of the parameter influence” (6).
- the data model is preferably able to establish a connection between the influencing variables and the resource consumption. Additional information can preferably be derived from the data model structure in particular about the influence of variables on resource consumption, for example energy consumption (see step (6)).
- Current and/or future resource consumption is preferably determined using the data model.
- the current and/or future resource consumption is calculated or simulated.
- the basis for a simulation of the current and/or future resource consumption is the trained data model.
- Actual values of the process control and/or the Manufacturing Execution System (MES) and/or a weather station are preferably used as input parameters for the simulation, with the values recorded in this way preferably being aggregated over time windows, in particular using a buffer or a database.
- MES Manufacturing Execution System
- the simulation is in particular an actual simulation of resource consumption, in particular energy consumption.
- a prediction is preferably possible by means of the simulation.
- planned values from a production plan and/or design data and/or weather forecast data are recorded as input data, in particular in order to obtain a prediction of resource consumption, in particular energy consumption.
- a model value of the resource consumption for a time segment or a time window and/or a predicted resource consumption can preferably be provided as an output parameter, in particular for each input parameter or as a function of each input parameter.
- Simulation values that are available during the determination are preferably stored in a database for further processing.
- the actual simulation is preferably carried out regularly at a predefined time interval or when the influencing parameters change, in order to enable continuous monitoring of the resource consumption.
- the result is preferably a time series of the data model's actual resource consumption, which is used for a comparison with the measured resource consumption (see step (4)).
- the prediction is an optional process step that can be included in the evaluation.
- the prediction is preferably carried out regularly at a predefined time interval or when the future planning values and/or the forecast weather conditions change, in order to enable continuous monitoring of the future resource consumption.
- the result is preferably a time series of the prediction of resource consumption, which can be used in particular for resource requirements planning and/or as a basis for optimization steps (e.g. for peak load reduction, see step (8)).
- a simulated time series and a measured time series of the resource consumption are preferably compared with one another.
- a difference between the values is formed, with a time series in particular resulting that represents the deviations (delta time series).
- a time series is taken into account when determining, in particular calculating and/or simulating, a current and/or future resource consumption. This can preferably enable a better evaluation, since, for example, dynamic effects can also be taken into account (e.g. an error trend over several days/weeks compared to a rapid increase in the error).
- error patterns in particular resource error patterns, are labeled, in particular manually.
- patterns in the time series of the resource error can be assigned causes.
- a cause for an error can preferably be stored by the user or system operator.
- the result of the method step preferably forms a decision-making basis for system changes and/or renewed data model training.
- the system optimization is preferably carried out manually by a user or system operator or automatically by a control device 114 .
- An optimization measure that has been carried out can preferably be stored by the user or system operator or automatically, in particular in the data model or a database.
- an influence of the input variables in particular an influence of the data values and/or data types of the recorded data, determined on resource consumption.
- an influence of the input variables on the resource consumption from the data model, in particular the data model parameters is described by means of correlations, for example by means of factors.
- the correlations, in particular factors can be used to describe how great an influence there is on resource consumption when the weather, the target values and/or the process variables change.
- the influencing factors and their determined importance and/or the determined degree of impact are preferably written to the database and/or the data model after each change and/or after each data acquisition.
- the course of the change in the influencing variables is preferably traceable.
- a relationship in particular a correlation, can be established between the input variables and/or the influencing factors on the one hand and the resource consumption on the other hand, which is valid over the entire trained period and/or which varies over the entire trained period in such a way that preferably always the best possible determination, in particular calculation and/or simulation, of the current and/or future resource consumption is possible (7) parameter evaluation
- a change in the course of the resource consumption in particular a mathematical derivation in the course of the resource consumption, can be checked, in particular analyzed.
- step (4) it is preferably first checked whether the changing resource consumption, in particular energy consumption, is based on influencing parameters that were taken into account by the data model.
- the assessment from step (4) is preferably used for this purpose.
- a statement can preferably be made available as to which parameter has negatively or positively influenced or will influence resource consumption, in particular energy consumption.
- the parameters are preferably optimized, in particular automatically or by manual intervention in the process system 100.
- a manual change is made, for example, on the basis of the findings, in particular the statement of the parameter evaluation.
- Automatic parameter optimization takes place, for example, by mathematically solving an optimization problem.
- a production plan and/or target values of the recorded or determined data types and/or data types are optimized using an optimization function.
- the optimization problem to be solved contains, for example, secondary conditions such as: minimum number of workpieces 106 in the process and/or permissible target value ranges, preferably in order to ensure the quality of the workpieces 106 and/or the products to be manufactured.
- an optimization can be carried out on the basis of a dynamic data model, in particular it can be carried out automatically.
- provision can be made for peak load monitoring and/or peak load reduction to take place.
- the switch-on time and/or control parameters of components of the process installation 100 are optimized, in particular always taking into account other components and/or parts of the installation.
- optimization of the control strategy is preferably provided in the present method.
- dynamic driving styles such as a control strategy
- control tolerances may be allowed and/or target value definitions based on the resource consumption parameter assessment may be used.
- resource consumption With the determination, in particular calculation and/or simulation, of a current and/or future resource consumption, it is preferably possible to derive reference values for the resource consumption, which are archived or can be archived in a central database for a system with a specific design/dimensioning. With these reference values, resource consumption can preferably be benchmarked in the case of a similar system design and/or similar system dimensioning. Furthermore, with the calculated resource consumption values, in particular
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021212412.7A DE102021212412A1 (de) | 2021-11-04 | 2021-11-04 | Verfahren zur Bewertung des Ressourcenverbrauchs einer Prozessanlage und Prozessanlage |
| PCT/DE2022/100812 WO2023078505A1 (de) | 2021-11-04 | 2022-11-04 | Verfahren zur bewertung des ressourcenverbrauchs einer prozessanlage und prozessanlage |
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| EP22817077.5A Pending EP4427106A1 (de) | 2021-11-04 | 2022-11-04 | Verfahren zur bewertung des ressourcenverbrauchs einer prozessanlage und prozessanlage |
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| Country | Link |
|---|---|
| EP (1) | EP4427106A1 (de) |
| CN (1) | CN118251637A (de) |
| DE (2) | DE102021212412A1 (de) |
| WO (1) | WO2023078505A1 (de) |
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| US5923834A (en) | 1996-06-17 | 1999-07-13 | Xerox Corporation | Machine dedicated monitor, predictor, and diagnostic server |
| US20020010563A1 (en) * | 1999-06-15 | 2002-01-24 | S. Michael Ratteree | Method for achieving and verifying increased productivity in an industrial process |
| US20030110103A1 (en) | 2001-12-10 | 2003-06-12 | Robert Sesek | Cost and usage based configurable alerts |
| FR2879770B1 (fr) * | 2004-12-17 | 2007-03-30 | Air Liquide | Procede de controle des performances energetiques d'une unite industrielle |
| US9129231B2 (en) * | 2009-04-24 | 2015-09-08 | Rockwell Automation Technologies, Inc. | Real time energy consumption analysis and reporting |
| WO2013020603A1 (de) * | 2011-08-11 | 2013-02-14 | Siemens Aktiengesellschaft | Verfahren zur fertigung eines bauelements |
| DE102014101439A1 (de) | 2014-02-05 | 2015-08-06 | Staufen.Ag | Prozesssteuerungssystem zur Steuerung eines Produktentstehungsprozesses |
| CN112513753B (zh) * | 2018-08-06 | 2023-10-03 | 三菱电机株式会社 | 生产调度装置以及生产调度方法 |
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- 2021-11-04 DE DE102021212412.7A patent/DE102021212412A1/de not_active Withdrawn
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2022
- 2022-11-04 WO PCT/DE2022/100812 patent/WO2023078505A1/de not_active Ceased
- 2022-11-04 DE DE112022005285.6T patent/DE112022005285A5/de active Pending
- 2022-11-04 CN CN202280072970.5A patent/CN118251637A/zh active Pending
- 2022-11-04 EP EP22817077.5A patent/EP4427106A1/de active Pending
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| WO2023078505A1 (de) | 2023-05-11 |
| DE112022005285A5 (de) | 2024-09-05 |
| CN118251637A (zh) | 2024-06-25 |
| DE102021212412A1 (de) | 2023-05-04 |
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