Method for operating a system, and corresponding system

Abstract

The present invention relates to a method for operating a system (1), the system (1) comprising at least one assembly (2, 3), a control device (4) for the at least one assembly (2, 3), and a computing unit (7). The method comprises the following steps: controlling the at least one assembly (2, 3) by means of the control device (4) on the basis of at least one control parameter; and determining at least one consumption parameter of the at least one assembly (2, 3) by means of the computing unit (7) on the basis of the at least one control parameter. The present invention further relates to a system (1) which is designed to carry out the method.

Description

[0001] PROCEDURE FOR OPERATING A PLANT AND CORRESPONDING PLANT

[0002] The present invention relates to a method for operating a plant and a plant which is designed to carry out this method.

[0003] Such systems, which can be designed in particular as industrial systems, and associated methods for operating the system are known from the prior art. The term "operation" is to be interpreted broadly in this context and for the present invention. Thus, the "operation" of the system is to be understood as any normal operating mode, such as a control mode, process mode or production mode, or even standby mode of the system. The entire system or just a part of the system can be in operation. These systems usually have one or more units, such as electrical or mechanical units. These units can be designed as a complete machine or as an individual machine part. In addition, such systems usually include a control device, for example a programmable logic controller, in order to control the various units and thus the system as required.

[0004] To monitor and optimize the plant's processes, the relevant consumption parameters of the units during operation, such as energy consumption or media consumption, are usually recorded. The consumption parameter can be (total) consumption over one or more periods. For this purpose, permanently installed measuring devices are usually used on the units so that a user can read the corresponding measured values ​​directly on site. Such measuring devices can be analog or digital, with the corresponding measured value being shown on a scale, a display, or another display element of the measuring device. In modern solutions, digital measuring devices can also be connected to the control device or a higher-level control system via signal technology in order to further process or archive the recorded measured values ​​or consumption.

[0005] In the case of large systems with a large number of units, a finely granular equipment with measuring devices can be very complex and cost-intensive. A correspondingly large number of measuring devices must be procured, installed, and connected to the other components of the system via signal technology. In addition, the various measuring, connection, and bus systems of the measuring devices are difficult to standardize. Recording the consumption parameters of the various units and thus operating the system is correspondingly complex and cost-intensive. It is therefore the object of the present invention to provide a method for operating a system that can be carried out particularly simply and cost-effectively. Furthermore, it is the object of the present invention to provide a system that is configured to carry out this method with the corresponding advantages.

[0006] The object is achieved by a method for operating a system according to claim 1 and a system according to claim 13. Advantageous further developments are described in the dependent claims.

[0007] According to the invention, a method for operating a system is provided, wherein the system has at least one unit, a control device for the at least one unit, and a calculation unit. The method includes the following steps: controlling the at least one unit by the control device based on at least one control parameter; and determining at least one consumption parameter of the at least one unit by the calculation unit based on the at least one control parameter.

[0008] With the approach of the present invention, the at least one consumption parameter of the at least one unit is computationally determined by the calculation unit. For this purpose, the calculation unit uses control parameters already known for controlling the at least one unit. Thus, the method according to the invention determines a virtual consumption parameter that is not based on a measured value, but rather on an input variable necessary for controlling the unit, i.e., the control parameter.

[0009] For the present invention, the term "control parameter" is to be understood broadly and thus takes into account all factors relevant to the control of the at least one unit by the control device. For example, the at least one control parameter can be a control signal, such as a switch-on signal, switch-off signal, or other control signal that influences the operation of the at least one unit in some way. In this sense, the corresponding switch-on times, start and end times of operation, power levels, or states of the at least one unit can also be considered as control parameters.

[0010] Ultimately, by taking into account the known at least one control parameter and, if applicable, further known parameters relating to the at least one unit, such as fixed characteristics of the at least one unit or parameters from real measuring devices, the at least one consumption parameter of the at least one unit can be calculated with sufficient accuracy. It is therefore no longer necessary to actually record the at least one consumption parameter of the at least one unit using a permanently installed measuring device. In simple terms, the at least one consumption parameter of the at least one unit can be determined "without a measuring device." This simplifies the determination of the at least one consumption parameter of the at least one unit, and costs can be saved. This applies in particular to very large systems when multiple consumption parameters from multiple units are to be determined.Ultimately, the process of operating the system becomes simpler and more cost-effective.

[0011] The calculation unit can be designed separately from the control device. However, it would also be conceivable for the control device to include the calculation unit, so that the control device ultimately determines the at least one consumption parameter of the at least one unit.

[0012] Preferably, the at least one consumption parameter of the at least one unit relates to energy consumption and / or media consumption of the at least one unit. Advantageously, the at least one consumption parameter of the at least one unit is consumption over one or more periods.

[0013] The terms "energy consumption" and "media consumption" are to be understood broadly for the purposes of the present invention. Energy consumption encompasses any form of energy, such as electricity, gas, oil, refrigeration, and heat. Media consumption also includes any type of medium that can be consumed or processed by a unit during system operation. Examples include liquid, gaseous, and solid media, such as compressed air, steam, hot water, cooling water, deionized water, fresh water, wastewater, or rock flour.

[0014] Preferably, the method for operating a system further includes the following steps: providing the at least one consumption parameter of the at least one unit determined by the calculation unit as an object variable for further processing by the calculation unit; and preferably, storing the object variable by the calculation unit. Advantageously, in a further step, the calculation unit transmits the object variable to a system processing the object variable. Alternatively, the system processing the object variable can also retrieve the object variable from the calculation unit.

[0015] By providing the at least one consumption parameter of the at least one unit determined by the calculation unit as an object variable, it is possible to forward it to other systems for further processing in a standardized manner. For example, after provision, the object variable can be forwarded to an energy management system in order to evaluate it there for process optimization of the system or to visualize its content. By saving the object variable, the object variable can be accessed again at any time. Furthermore, it is possible to create a corresponding archive. The calculation unit can have a memory for storing the object variable. However, it would also be possible to use a memory separate from the calculation unit. A non-volatile memory is preferably used.

[0016] Advantageously, the object variable comprises a physical unit of the at least one consumption parameter of the at least one aggregate determined by the calculation unit, a designation of the at least one consumption parameter of the at least one aggregate determined by the calculation unit, an identification of the system, a calculation value indication and / or a time indication in relation to the determination of the at least one consumption parameter of the at least one aggregate by the calculation unit.

[0017] Based on the additional information of the object variable relating to the at least one consumption parameter of the at least one unit, in addition to the determined calculated value, the object variable can be uniquely assigned for further processing or storage. In addition, the additional information offers more evaluation options for appropriate further processing of the object variable. The calculated value specification clarifies that the at least one consumption parameter of the at least one unit is a consumption parameter determined by the calculation unit. The time specification relating to the determination of the at least one consumption parameter of the at least one unit by the calculation unit can, for example, refer to the starting point or the duration of the period relevant for the at least one consumption parameter of the at least one unit.In addition, the designation of the at least one consumption parameter of the at least one aggregate determined by the calculation unit can, for example, contain a corresponding plain text name.

[0018] Preferably, the determination of the at least one consumption parameter of the at least one unit is carried out based on a calculation algorithm of the calculation unit.

[0019] The calculation algorithm allows the calculation unit to determine at least one consumption parameter of at least one unit in a very simple and cost-effective manner. The calculation algorithm allows the calculation unit to take into account all factors and parameters necessary for determining the at least one consumption parameter of at least one unit. Furthermore, the calculation algorithm can be easily adapted as needed.

[0020] Preferably, the method for operating a system further includes the following steps: adapting the calculation algorithm for a renewed determination of a consumption parameter of the at least one unit by the calculation unit; and preferably, a renewed determination of a consumption parameter of the at least one unit by the calculation unit based on the adapted calculation algorithm.

[0021] By adapting the calculation algorithm for a renewed determination of the consumption parameter of the at least one unit by the calculation unit, it is possible to iteratively improve the calculation algorithm. This allows the calculation unit to determine future consumption parameters of the at least one unit even more accurately.

[0022] To adapt the calculation algorithm, the calculation algorithm is advantageously subjected to a calibration factor and / or a calibration factor of the calculation algorithm is adapted.

[0023] A calibration factor allows the calculation algorithm to be adjusted very simply and flexibly. The calibration factor essentially serves to compensate for deviations between the at least one consumption parameter of the at least one unit determined by the calculation unit and the corresponding actual consumption of the at least one unit. For example, delays in the control system or design-related aspects of the at least one unit that influence the actual consumption can be taken into account by a calibration factor for the calculation algorithm.

[0024] Preferably, the calculation unit comprises artificial intelligence, wherein the adaptation of the calculation algorithm is performed by the artificial intelligence. Preferably, the artificial intelligence is based on machine learning.

[0025] The artificial intelligence of the calculation unit can collect and process empirical values ​​for controlling the at least one unit and for determining consumption parameters of the at least one unit over time. The constantly learning artificial intelligence can thus optimally adapt and continuously update the calculation algorithm. For example, the artificial intelligence can provide appropriate calibration factors for the calculation algorithm or simply adjust existing calibration factors of the calculation algorithm accordingly. Overall, the consumption parameters of the at least one unit to be determined in the future can be determined even more accurately by the calculation unit.

[0026] The system preferably has a measuring device for the at least one unit, wherein the following steps are carried out to adapt the calculation algorithm: detecting a consumption parameter of the at least one unit by the measuring device; comparing the at least one consumption parameter of the at least one unit determined by the calculation unit with the consumption parameter of the at least one unit detected by the measuring device by the calculation unit; and adapting the calculation algorithm based on a result of the comparison. Preferably, the measuring device for detecting the consumption parameter of the at least one unit is temporarily connected to the at least one unit. Particularly preferably, the measuring device for detecting the consumption parameter of the at least one unit is only temporarily connected to the at least one unit.

[0027] By comparing, a possible deviation between the at least one consumption parameter of the at least one unit determined by the calculation unit and the consumption parameter of the at least one unit detected by the measuring device can be qualitatively and quantitatively recorded. Thus, the calculation algorithm can be optimally adapted based on the result of the comparison by the calculation unit. Naturally, the at least one consumption parameter of the at least one unit determined by the calculation unit and the consumption parameter of the at least one unit detected by the measuring device are compatible in order to be able to be compared with each other. Thus, the two consumption parameters can refer to the same type of energy or media consumption in the same period or periods.Overall, consumption parameters of at least one unit can be determined even more precisely in the future by the calculation unit.

[0028] Because the measuring device is temporarily connected, there is no need to rely on a permanently installed or stationary measuring device in the system. Ultimately, the measuring device can be used flexibly within the system or for various units within the system to compare at least one consumption parameter of the corresponding unit determined by the calculation unit with the consumption parameter of the corresponding unit recorded by the measuring device. This allows for simple and cost-effective operation of the system.

[0029] The system preferably has a measuring device for the at least one unit, wherein at least two consumption parameters of the at least one unit are determined by the calculation unit, and the following steps are carried out to adapt the calculation algorithm: summing the at least two consumption parameters of the at least one unit determined by the calculation unit to form a total consumption parameter of the at least one unit determined by the calculation unit; detecting a consumption parameter of the at least one unit by the measuring device; comparing the total consumption parameter of the at least one unit determined by the calculation unit with the consumption parameter of the at least one unit detected by the measuring device by the calculation unit; and adapting the calculation algorithm based on a result of the comparison.Preferably, the measuring device for detecting the consumption parameter of the at least one unit is temporarily connected to the at least one unit. Particularly preferably, the measuring device for detecting the consumption parameter of the at least one unit is only temporarily connected to the at least one unit.

[0030] By comparing, a possible deviation between the total consumption parameter of the at least one unit determined by the calculation unit and the consumption parameter of the at least one unit detected by the measuring device can be qualitatively and quantitatively recorded. In doing so, summing allows for as many consumption parameters determined by the calculation unit as possible to be taken into account. Thus, the calculation algorithm can be optimally adapted based on the result of the comparison by the calculation unit. The at least two consumption parameters of the at least one unit determined by the calculation unit are, of course, compatible in order to be summed. Thus, the at least two consumption parameters can refer to the same type of energy or media consumption.Likewise, the total consumption parameter of the at least one unit determined by the calculation unit and the consumption parameter of the at least one unit measured by the measuring device are compatible so that they can be compared with each other. Thus, the two (total) consumption parameters can refer to the same type of energy or media consumption during the same period(s). Overall, future consumption parameters of the at least one unit can be determined even more accurately by the calculation unit.

[0031] Because the measuring device is temporarily connected, there is no need to rely on a permanently installed or stationary measuring device in the system. Ultimately, the measuring device can be used flexibly within the system or for various units within the system to compare the total consumption parameter of the corresponding unit determined by the calculation unit with the consumption parameter of the corresponding unit recorded by the measuring device. This allows for simple and cost-effective operation of the system.

[0032] Preferably, the measuring device is a digital measuring device, wherein the measuring device is connected to the calculation unit via signaling. The signaling connection can be wireless or wired, for example.

[0033] Advantageously, the system comprises at least two units and a summation measuring device for the at least two units, wherein a consumption parameter is determined by the calculation unit for each of the at least two units, and the following steps are carried out to adapt the calculation algorithm: summing the consumption parameters of the at least two units determined by the calculation unit to form a total consumption parameter of the at least two units determined by the calculation unit; detecting a consumption parameter of the at least two units by the summation measuring device; comparing the total consumption parameter of the at least two units determined by the calculation unit with the consumption parameter of the at least two units detected by the summation measuring device by the calculation unit; and adapting the calculation algorithm based on the result of the comparison.

[0034] This advantageous development of the method makes it particularly easy to adapt the calculation algorithm. In particular, all consumption parameters of the at least two units determined by the calculation unit need not be individually compared with the corresponding consumption parameters of the corresponding unit recorded by a measuring device. The total consumption parameter of the at least two units determined by the calculation unit and the consumption parameter of the at least two units recorded by the summation measuring device can simply be used. This procedure is particularly advantageous if the system already includes such a stationary summation measuring device for the at least two units. The consumption parameters of the at least two units determined by the calculation unit are, of course, compatible so that they can be summed.This allows the consumption parameters to refer to the same type of energy or media consumption. Likewise, the total consumption parameter of the at least two units determined by the calculation unit and the consumption parameter of the at least two units recorded by the summation device are compatible, allowing them to be compared. This allows the two (total) consumption parameters to refer to the same type of energy or media consumption during the same period(s). Ultimately, the system can be operated simply and cost-effectively.

[0035] Preferably, the system comprises at least two units and a summation measuring device for the at least two units, wherein the at least one consumption parameter of a first unit of the at least two units is determined by the calculation unit, and the following steps are carried out to adapt the calculation algorithm: detecting a consumption parameter of the first unit of the at least two units by the summation measuring device,wherein, in order to detect the consumption parameter of the first unit of the at least two units by the summation measuring device, the at least two units except for the first unit of the at least two units are switched off by the control device; comparing the at least one consumption parameter of the first unit of the at least two units determined by the calculation unit with the consumption parameter of the first unit of the at least two units detected by the summation measuring device by the calculation unit; and adapting the calculation algorithm based on the result of the comparison. This advantageous development of the method makes it possible to adapt the calculation algorithm particularly easily. In particular, the summation measuring device only needs to be connected or permanently installed once, and despite the fact that the summation measuring device is provided for all of the at least two units,The consumption parameter of the first unit of the at least two units is recorded by the summation measuring device. An individual connection of a measuring device to each unit for which the consumption parameter is to be recorded for comparison is therefore not necessary. This procedure is particularly advantageous if the system already includes such a stationary summation measuring device for the at least two units. Of course, the at least one consumption parameter of the first unit of the at least two units determined by the calculation unit and the consumption parameter of the first unit of the at least two units recorded by the summation measuring device are compatible.to be compared with each other. This allows the two consumption parameters to refer to the same type of energy or media consumption during the same period(s). Ultimately, the system can be operated simply and cost-effectively.

[0036] Preferably, the summation measuring device is a digital measuring device, wherein the summation measuring device is connected via signaling to each of the at least two units as well as to the calculation unit. The signaling connection can be wireless or wired, for example.

[0037] Furthermore, it should be noted that the method steps described above for recording a consumption parameter by the measuring device or total measuring device can be carried out, for example, automatically or manually.

[0038] According to the present invention, a system is also provided, comprising at least one unit; a control device for the at least one unit; and a calculation unit, wherein the system is configured to carry out the method for operating a system described above.

[0039] The advantages described in connection with the method for operating a plant apply accordingly to the plant configured to carry out the method. Overall, a plant is provided with which the plant can be operated simply and cost-effectively. Furthermore, the plant is simple to construct and inexpensive to manufacture.

[0040] The control device preferably includes the calculation unit. This makes the system particularly compact. Furthermore, the method has the advantage that the calculation unit can easily and directly access control parameters known to the control device and other parameters related to the at least one unit. This allows the determination of the at least one consumption parameter of the at least one unit to be carried out particularly quickly and easily.

[0041] The system preferably comprises a measuring device for the at least one unit, wherein the system is configured to carry out the method described above for operating a system. The measuring device is preferably designed to be removable. Furthermore, it is advantageous if the measuring device is a mobile measuring device.

[0042] The advantages described in connection with the method for operating a plant apply accordingly to the plant designed for this purpose.

[0043] Advantageously, the system comprises at least two units and a summation measuring device for the at least two units, wherein the system is configured to carry out the method for operating a system described above.

[0044] The advantages described in connection with the method for operating a plant apply accordingly to the plant designed for this purpose.

[0045] Furthermore, it should be noted that the advantageous developments described above in connection with the method according to the invention for operating a system apply accordingly to the system according to the invention and vice versa.

[0046] Overall, the present invention provides a simple and cost-effective method for operating a system. Corresponding advantages can also be observed for the system according to the invention. The system can be operated particularly easily and cost-effectively. Furthermore, the system is simple in design and inexpensive to manufacture.

[0047] In the following, advantageous embodiments of the present invention are described schematically with reference to figures, wherein

[0048] Fig. 1 shows a plant according to a first embodiment of the present invention;

[0049] Fig. 2 shows a plant according to a second embodiment of the present invention; and

[0050] Fig. 3 shows a system according to a third embodiment of the present invention. Identical components in the various embodiments are designated by the same reference numerals. Fig. 1 shows a system 1 according to a first embodiment of the present invention. In this embodiment, the system 1 is designed as an industrial system. In this embodiment, the system 1 has a first unit 2 and a second unit 3. The two units 2 and 3 are, for example, each an industrial machine for conveying and / or processing a workpiece to be manufactured. However, the units 2 and 3 can also be individual machine parts of a corresponding machine. Of course, the system 1 can also have just one unit or more than two units.

[0051] The system 1 has a central control device 4 for the first unit 2 and the second unit

[0052] 3. The control device 4 is, for example, a programmable logic controller. In order to communicate with the first unit 2 and the second unit 3, the control device 4 is signal-connected to the first unit 2 via a first line 5 and to the second unit 3 via a second line 6. However, communication between the control device 4 and the first unit 2 and the second unit 3 is not limited to wired communication. Wireless solutions can also be used here.

[0053] In addition, the system 1 has a calculation unit 7. In this exemplary embodiment, the control device 4 has the calculation unit 7, so that the control device 4 ultimately has all the components and functions of the calculation unit 7. In principle, however, the calculation unit 7 can also be designed separately from the control device 4 and connected to it accordingly via signaling.

[0054] The following explains how system 1 can be operated according to Fig. 1. For this purpose, it is assumed that system 1 is a painting system, with the first unit 2 and the second unit 3 each being designed as an electric motor of a conveyor device for conveying a workpiece to be painted. For the sake of clarity, the following explanations regarding the operation of system 1 refer only to the first unit 2. However, these explanations apply accordingly to the second unit 3.

[0055] First, in an operating mode of the system 1, the first unit 2 is controlled by the control device

[0056] 4 is controlled based on at least one control parameter. For example, based on corresponding functional modules of the control device 4, switch-on signals and switch-off signals are sent from the control device 4 to the first unit 2. Accordingly, the first unit 2, which in the present embodiment is designed as an electric motor, is switched on or off and thereby causes the workpiece to be painted to be conveyed as desired by the conveying device. In this embodiment, the first unit 2, when switched on, is continuously operated at a uniform power level. During operation of the system 1, it is now possible to determine at least one consumption parameter of the first unit 2 by the calculation unit 7. For example, the power consumption of the first unit 2 for a specific period of time should be determined as a consumption parameter by the calculation unit 7.

[0057] To determine the consumption parameter of the first unit 2, the calculation unit 7 contains a calculation algorithm that is executed based on a corresponding function block of the calculation unit 7. For the calculation algorithm and thus to determine the consumption parameter, the calculation unit 7 uses known parameters relating to the first unit 2. In the present exemplary embodiment, the switch-on signals and switch-off signals sent by the control device 4 to the first unit 2 are taken into account. These known control parameters make it possible to determine the switch-on duration of the first unit 2 within the period relevant for the consumption parameter. In addition, a fixed characteristic of the first unit 2 is used as a further known parameter. Here, the fixed characteristic is the power consumption of the first unit 2 per unit of time.Accordingly, the calculation algorithm can determine the power consumption of the first unit 2 for the relevant period by multiplying the duty cycle by the power consumption per unit of time.

[0058] If, for example, it is assumed that the duty cycle of the first unit 2 is one hour and the first unit 2 is operated at 2000 watts, the power consumption determined by the calculation unit 7 is 2 kWh for the relevant period.

[0059] After determining the consumption parameter of the first unit 2, the calculation unit 7 provides the determined consumption parameter as an object variable for further processing. This allows the calculation unit 7 to forward the object variable, for example, to an energy management system for analysis by the energy management system and visualization of the corresponding results on a display of the energy management system. Alternatively, the energy management system can also retrieve the provided object variable from the calculation unit 7. Furthermore, the calculation unit 7 stores the object variable in a memory of the calculation unit 7. Accordingly, the determined consumption parameter of the first unit 2 can be accessed again at any time.

[0060] The object variable contains several pieces of information about the consumption parameter of the first unit 2 determined by the calculation unit 7. In addition to the actual calculated value, the object variable contains the physical unit of the calculated value, in this case: kWh. In addition, the object variable specifies the plain text name of the determined consumption parameter of the first unit 2, for example: “Electricity consumption of the first unit 2 in period X to Y.” In addition, the object variable also contains an identifier for system 1, which could be, for example, the serial number of system 1. Further information provided by the object variable is the statement that the consumption parameter of the first unit 2 is a value determined by the calculation unit 7. Finally, the object variable also contains time information, such as the starting point of the period for which the electricity consumption of the first unit 2 is determined.

[0061] The calculation algorithm of the calculation unit 7 can be iteratively adapted during the operation of the system 1 and thus improved for subsequent re-determinations of a consumption parameter of the first unit 2. The calculation algorithm can be adapted in several ways. A first such approach is the provision of artificial intelligence for the calculation unit 7. In the present exemplary embodiment, the artificial intelligence is based on machine learning. During the operation of the system 1, the artificial intelligence of the calculation unit 7 collects and processes empirical values ​​relating to the control of the first unit 2 and the corresponding determination of consumption parameters. Based on these empirical values, the constantly learning artificial intelligence can provide continuously updated calibration factors with which the calculation algorithm is applied.

[0062] In the present exemplary embodiment, the artificial intelligence can, for example, provide a calibration factor that takes into account a certain delay time after the first unit 2 is switched on until the first unit 2 is running at full power. This calibration factor is then used to deduct a corresponding proportion when calculating the power consumption of the first unit 2 for the relevant period. Of course, this calibration factor can also be continuously adjusted by the artificial intelligence. It is also conceivable for the artificial intelligence to take external factors into account that can influence power consumption and thus also the consumption parameters. For example, temperature fluctuations can be taken into account via the artificial intelligence.

[0063] The method described above for operating the system 1 with respect to the first unit 2 can also be carried out accordingly with respect to the second unit 3.

[0064] Fig. 2 shows a system 1 according to a second embodiment of the present invention. The above statements regarding the first embodiment with regard to system 1 and the corresponding method steps apply accordingly to the second embodiment. Only the differences between the second embodiment and the first embodiment will be discussed below.

[0065] The system 1 according to the second embodiment has, in addition to the components of the system 1 of the first embodiment, a mobile, removable measuring device 8. The measuring device 8 can thus be used flexibly for the first unit 2 or the second unit 3. In Fig. 2, the measuring device 8 is used, for example, for the first unit 2 and is thus signal-connected to the calculation unit 7 via a third line 9 and to the first unit 2 via a fourth line 10. Of course, the measuring device 8 can also be used for the second unit 3 and thus signal-connected to the second unit 3 via the fourth line 10. The third line 9 is designed in particular for wireless signal-communication. However, wired communication is of course also conceivable.In the present embodiment, the measuring device 8 is designed as an electricity meter.

[0066] With the system 1 according to the second embodiment, the calculation algorithm of the calculation unit 7 can be adapted in a second way. The following explains how the calculation algorithm can be adapted with respect to the first unit 2. However, these explanations apply accordingly with respect to the second unit 3.

[0067] In this second adaptation variant, a consumption parameter of the first unit 2 is also actually recorded by the measuring device 8. In particular, the measuring device 8, as an electricity meter, records the electricity consumption of the first unit 2 for the same period that is used to determine the electricity consumption of the first unit 2 by the calculation unit 7. To actually record the consumption parameter of the first unit 2, the flexibly usable measuring device 8 is only temporarily connected to the first unit 2.

[0068] With knowledge of the consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 detected by the measuring device 8, the calculation unit 7 can compare these two consumption parameters. This allows the calculation unit 7 to qualitatively and quantitatively detect any possible deviation between the consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 detected by the measuring device 8. Based on the result of the comparison, the calculation algorithm is then adjusted accordingly by the calculation unit 7. For this purpose, for example, a corresponding calibration factor can be provided for the calculation algorithm or an existing calibration factor of the calculation algorithm can be adjusted accordingly.

[0069] For example, if it is assumed that the calculation unit 7, as explained with reference to the first embodiment, determines a power consumption of 2 kWh for the consumption parameter of the first unit 2, and the measuring device 8 detects a power consumption of 3 kWh for the consumption parameter of the first unit 2, the calculation unit 7 determines a deviation of 1 kWh (= 3 kWh - 2 kWh) through the comparison. The corresponding percentage deviation can then be taken into account to adjust the calculation algorithm, so that the adjusted calculation algorithm can be used when the calculation unit 7 determines a consumption parameter of the first unit 2 again.

[0070] The measuring device 8 can also, in principle, be intended solely for the first unit 2 and installed accordingly. In this case, the adaptation variant described above eliminates the need to temporarily connect the measuring device 8 to the first unit 2.

[0071] With system 1 according to the second embodiment, the calculation algorithm of the calculation unit 7 can also be adapted in a third way. The following explains how the calculation algorithm can be adapted with respect to the first unit 2. However, these explanations apply accordingly with respect to the second unit 3.

[0072] In this third variant of adaptation, it is assumed that, as explained with reference to the first embodiment, at least two consumption parameters of the first unit 2 are determined by the calculation unit 7.

[0073] To adapt the calculation algorithm, the calculation unit 7 first sums the at least two consumption parameters of the first unit 2 determined by the calculation unit 7 to form a total consumption parameter of the first unit 2. Furthermore, a consumption parameter of the first unit 2 is also actually recorded by the measuring device 8. In particular, the measuring device 8, as an electricity meter, records the electricity consumption of the first unit 2 for the same periods that are used by the calculation unit 7 to determine the two summed electricity consumptions of the first unit 2. To actually record the consumption parameter of the first unit 2, the flexibly usable measuring device 8 is only temporarily connected to the first unit 2, see Fig. 2.

[0074] With knowledge of the total consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 recorded by the measuring device 8, the calculation unit 7 can compare these two consumption parameters. This allows the calculation unit 7 to qualitatively and quantitatively record any possible deviation between the total consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 recorded by the measuring device 8. Based on the result of the comparison, the calculation algorithm is then adjusted accordingly by the calculation unit 7. For this purpose, for example, a corresponding calibration factor can be provided for the calculation algorithm or an existing calibration factor of the calculation algorithm can be adjusted accordingly.

[0075] For example, if it is assumed that the calculation unit 7, as explained with reference to the first embodiment, determines an electricity consumption of 2 kWh for a first consumption parameter of the first unit 2 and an electricity consumption of 3 kWh for a second consumption parameter of the first unit 2 (i.e., the electricity consumption of the first unit 2 for a different period), the total consumption parameter of the first unit 2 determined by the calculation unit 7 is 5 kWh (= 2 kWh + 3 kWh). If it is also assumed that the measuring device 8 records an electricity consumption of 6 kWh for the consumption parameter of the first unit 2, the calculation unit 7 determines a deviation of 1 kWh (= 6 kWh - 5 kWh) through the comparison.The corresponding percentage deviation can then be taken into account to adapt the calculation algorithm, so that when a consumption parameter of the first unit 2 is determined again by the calculation unit 7, the adapted calculation algorithm can be used.

[0076] The measuring device 8 can also, in principle, be intended solely for the first unit 2 and installed accordingly. In this case, the adaptation variant described above eliminates the need to temporarily connect the measuring device 8 to the first unit 2.

[0077] Fig. 3 shows a system 1 according to a third embodiment of the present invention. The above statements regarding the first embodiment with regard to system 1 and the corresponding method steps apply accordingly to the third embodiment. The following only discusses the differences between the third embodiment and the first embodiment.

[0078] In addition to the components of system 1 of the first embodiment, system 1 according to the third embodiment includes a summation measuring device 11 for the first unit 2 and the second unit 3. The summation measuring device 11 is signal-connected to the calculation unit 7 via a fifth line 12. Furthermore, the summation measuring device 11 is signal-connected to the first unit 2 via a sixth line 13 and to the second unit 3 via a seventh line 14. In the present embodiment, the summation measuring device 11 is designed as an electricity meter.

[0079] With system 1 according to the third embodiment, the calculation algorithm of the calculation unit 7 can be adapted in a fourth way. The following explains how the calculation algorithm can be adapted with respect to the first unit 2. However, these explanations apply accordingly with respect to the second unit 3.

[0080] In this fourth adaptation variant, a consumption parameter of the first unit 2 is also actually recorded by the summation measuring device 11. In particular, the summation measuring device 11, as an electricity meter, records the electricity consumption of the first unit 2 for the same period that is used to determine the electricity consumption of the first unit 2 by the calculation unit 7. In order for the consumption parameter of the first unit 2 to actually be recorded by the summation measuring device 11, the second unit 3 is switched off by the control device 4. With knowledge of the consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 recorded by the summation measuring device 11, the calculation unit 7 can compare these two consumption parameters.This allows the calculation unit 7 to qualitatively and quantitatively detect any possible deviation between the consumption parameter of the first unit 2 determined by the calculation unit 7 and the consumption parameter of the first unit 2 detected by the summation device 11. Based on the result of the comparison, the calculation algorithm is then adjusted accordingly by the calculation unit 7. For this purpose, for example, a corresponding calibration factor can be provided for the calculation algorithm or an existing calibration factor of the calculation algorithm can be adjusted accordingly.

[0081] For example, if it is assumed that the calculation unit 7, as explained with reference to the first embodiment, determines a power consumption of 2 kWh for the consumption parameter of the first unit 2, and the total measurement device 11 detects a power consumption of 3 kWh for the consumption parameter of the first unit 2, the calculation unit 7 determines a deviation of 1 kWh (= 3 kWh - 2 kWh) through the comparison. The corresponding percentage deviation can then be taken into account to adjust the calculation algorithm, so that the adjusted calculation algorithm can be used when the calculation unit 7 determines a consumption parameter of the first unit 2 again.

[0082] With system 1 according to the third embodiment, the calculation algorithm of the calculation unit 7 can also be adapted in a fifth way. The following explains how the calculation algorithm can be adapted with respect to the first unit 2. However, these explanations apply accordingly with respect to the second unit 3.

[0083] In this fifth variant of adaptation, it is assumed that, as explained with reference to the first embodiment, a consumption parameter (power consumption of the respective unit within a period of time) is determined by the calculation unit 7 for both the first unit 2 and the second unit 3.

[0084] To adapt the calculation algorithm, the two consumption parameters of the two units 2 and 3 determined by the calculation unit 7 are first summed by the calculation unit 7 to form a total consumption parameter for the two units 2 and 3. In addition, a consumption parameter of the two units 2 and 3 is also actually recorded by the summation measuring device 11. In particular, the summation measuring device 11, as an electricity meter, records the electricity consumption of the two units 2 and 3 for the respective periods that are used by the calculation unit 7 to determine the electricity consumption of the two units 2 and 3. With knowledge of the total consumption parameter of the two units 2 and 3 determined by the calculation unit 7 and the consumption parameter of the two units 2 and 3 recorded by the summation measuring device 11, the calculation unit 7 can compare these two consumption parameters.This allows the calculation unit 7 to qualitatively and quantitatively detect any possible deviation between the total consumption parameter of the two units 2 and 3 determined by the calculation unit 7 and the consumption parameter of the two units 2 and 3 recorded by the total measuring device 11. Based on the result of the comparison, the calculation algorithm is then adjusted accordingly by the calculation unit 7. For this purpose, for example, a corresponding calibration factor can be provided for the calculation algorithm or an existing calibration factor of the calculation algorithm can be adjusted accordingly.

[0085] For example, if it is assumed that the calculation unit 7, as explained with reference to the first embodiment, determines a power consumption of 2 kWh for the consumption parameter of the first unit 2 and a power consumption of 3 kWh for the consumption parameter of the second unit 3, the total consumption parameter of the two units 2 and 3 summed by the calculation unit 7 results in a power consumption of 5 kWh (= 2 kWh + 3 kWh). If it is also assumed that the summation measuring device 11 records a power consumption of 6 kWh for the consumption parameter of the two units 2 and 3, the calculation unit 7 determines a deviation of 1 kWh (= 6 kWh - 5 kWh) through the comparison.The corresponding percentage deviation can then be taken into account to adapt the calculation algorithm, so that when a consumption parameter of the first unit 2 is determined again by the calculation unit 7, the adapted calculation algorithm can be used.

[0086] In the embodiments described above, the system 1 is designed as a painting system, wherein the first unit 2 and the second unit 3 are each an electric motor for a conveying device. However, the system 1 is not restricted to this design. According to another embodiment, the system 1 can be designed, for example, as a process system, in which the two units 2 and 3 are each designed as a unit for supplying a gas for a corresponding system process. The unit 2 or 3 thus contains a supply channel, an outlet flap with which the channel can be opened or closed, and a fan for conveying the gas through the outlet flap from the supply channel to a component receiving the gas. In this case, in addition to the power consumption, for example, a gas consumption over a certain period of time of the respective unit 2 or 3 can also be measured.3 as a consumption parameter to be determined for the procedure for operating Plant 1.

[0087] In the latter case, the control signals sent by the control device 4 to the respective unit 2 or 3 can be considered as known control parameters for the calculation algorithm. In particular, the on and off signals for the fan indicate when and for how long the fan is in operation. The control signals for the outlet flap also represent known control parameters that can be considered for the calculation. These control signals determine the position of the outlet flap and thus the percentage by which it is open. Known fixed parameters for the respective unit 2 or 3, however, are the diameter of the duct as well as the constant rotational speed and design of the fan. It would also be conceivable for the fan to be operated at different power levels over the relevant period and for the corresponding control signals to be used as additional control parameters.Taking these known parameters into account, the calculation algorithm can thus determine the gas consumption of the respective unit 2 or 3 with sufficient accuracy. The above statements regarding the paint shop and the corresponding process steps apply here accordingly.

[0088] The various embodiments described above with regard to System 1 and the corresponding methods for operating System 1 can be combined with each other as desired, where appropriate.

[0089] Finally, it should be noted that the numerals "first" and "second" used do not dictate any desired order. Rather, they serve solely to conceptually distinguish similar features and elements of the present invention.

[0090] REFERENCE SYMBOL

[0091] Plant first unit second unit control device first line second line calculation unit measuring device third line fourth line

[0092] Summation measuring device fifth line sixth line seventh line

Claims

CLAIMS 1. A method for operating a plant (1), wherein the plant (1) has at least one unit (2, 3), a control device (4) for the at least one unit (2, 3), and a calculation unit (7), the method comprising the following steps: Controlling the at least one unit (2, 3) by the control device (4) based on at least one control parameter; and Determining at least one consumption parameter of the at least one unit (2, 3) by the calculation unit (7) based on the at least one control parameter.

2. Method for operating a system (1) according to claim 1, wherein the at least one consumption parameter of the at least one unit (2, 3) relates to an energy consumption and / or media consumption of the at least one unit (2, 3).

3. A method for operating a plant (1) according to claim 1 or 2, wherein the method further comprises the following steps: Providing the at least one consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7) as an object variable for further processing by the calculation unit (7); and preferably storing the object variable by the calculation unit (7).

4. Method for operating a system (1) according to claim 3, wherein the object variable comprises a physical unit of the at least one consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7), a designation of the at least one consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7), an identification of the system (1), a calculation value indication and / or a time indication in relation to the determination of the at least one consumption parameter of the at least one unit (2, 3) by the calculation unit (7).

5. Method for operating a system (1) according to one of the preceding claims, wherein the determination of the at least one consumption parameter of the at least one unit (2, 3) is carried out based on a calculation algorithm of the calculation unit (7).

6. A method for operating a plant (1) according to claim 5, wherein the method further comprises the following steps: Adapting the calculation algorithm for a renewed determination of a consumption parameter of the at least one unit (2, 3) by the calculation unit (7); and preferably a renewed determination of a consumption parameter of the at least one unit (2, 3) by the calculation unit (7) based on the adapted calculation algorithm.

7. Method for operating a system (1) according to claim 6, wherein, in order to adapt the calculation algorithm, the calculation algorithm is subjected to a calibration factor and / or a calibration factor of the calculation algorithm is adapted.

8. A method for operating a system (1) according to claim 6 or 7, wherein the calculation unit (7) comprises artificial intelligence, wherein the adaptation of the calculation algorithm is carried out by the artificial intelligence, wherein the artificial intelligence is preferably based on machine learning.

9. Method for operating a system (1) according to one of claims 6 to 8, wherein the system (1) has a measuring device (8) for the at least one unit (2, 3), wherein the following steps are carried out to adapt the calculation algorithm: detecting a consumption parameter of the at least one unit (2, 3) by the measuring device (8); Comparing the at least one consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7) with the consumption parameter of the at least one unit (2, 3) detected by the measuring device (8) by the calculation unit (7); and Adapting the calculation algorithm based on a result of the comparison, wherein preferably the measuring device (8) for detecting the consumption parameter of the at least one unit (2, 3) is temporarily connected to the at least one unit (2, 3).

10. A method for operating a system (1) according to one of claims 6 to 9, wherein the system (1) has a measuring device (8) for the at least one unit (2, 3), wherein at least two consumption parameters of the at least one unit (2, 3) are determined by the calculation unit (7), wherein the following steps are carried out to adapt the calculation algorithm: summing the at least two consumption parameters of the at least one unit (2, 3) determined by the calculation unit (7) to form a total consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7) by the calculation unit (7); Detecting a consumption parameter of the at least one unit (2, 3) by the measuring device (8); Comparing the total consumption parameter of the at least one unit (2, 3) determined by the calculation unit (7) with the consumption parameter of the at least one unit (2, 3) detected by the measuring device (8) by the calculation unit (7); and Adapting the calculation algorithm based on a result of the comparison, wherein preferably the measuring device (8) for detecting the consumption parameter of the at least one unit (2, 3) is temporarily connected to the at least one unit (2, 3).

11. A method for operating a system (1) according to one of claims 6 to 10, wherein the system (1) has at least two units (2, 3) and a summation measuring device (11) for the at least two units (2, 3), wherein a consumption parameter is determined for each of the at least two units (2, 3) by the calculation unit (7), wherein the following steps are carried out to adapt the calculation algorithm: summing the consumption parameters of the at least two units (2, 3) determined by the calculation unit (7) to form a total consumption parameter of the at least two units (2, 3) determined by the calculation unit (7) by the calculation unit (7); Detecting a consumption parameter of the at least two units (2, 3) by the sum measuring device (11); Comparing the total consumption parameter of the at least two units (2, 3) determined by the calculation unit (7) with the consumption parameter of the at least two units (2, 3) detected by the total measuring device (11) by the calculation unit (7); and Adjust the calculation algorithm based on the matching result.

12. Method for operating a system (1) according to one of claims 6 to 11, wherein the system (1) has at least two units (2, 3) and a summation measuring device (11) for the at least two units (2, 3), wherein the at least one consumption parameter of a first unit (2) of the at least two units (2, 3) is determined by the calculation unit (7), wherein the following steps are carried out to adapt the calculation algorithm: detecting a consumption parameter of the first unit (2) of the at least two units (2, 3) by the summation measuring device (11), wherein to detect the consumption parameter of the first unit (2) of the at least two units (2, 3) by the Sum measuring device (11) the at least two units (2, 3) except for the first unit (2) of the at least two units (2, 3) are switched off by the control device (11); comparing the at least one consumption parameter of the first unit (2) of the at least two units (2, 3) determined by the calculation unit (7) with the consumption parameter of the first unit (2) of the at least two units (2, 3) detected by the sum measuring device (11) by the calculation unit (7); and adapting the calculation algorithm based on the result of the comparison.

13. A system (1) comprising: at least one unit (2, 3); a control device (4) for the at least one unit (2, 3); and a calculation unit (7), wherein the system (1) is configured to carry out the method according to one of the preceding claims.

14. System (1) according to claim 13, wherein the control device (4) includes the calculation unit (7).

15. System (1) according to claim 13 or 14, wherein the system (1) has a measuring device (8) for the at least one unit (2, 3), wherein the measuring device (8) is preferably designed to be removable.

16. System (1) according to one of claims 13 to 15, wherein the system (1) comprises at least two units (2, 3) and a summation measuring device (11) for the at least two units (2, 3).

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