Method, system, and computer program product for processing current data in geographically distributed functional blocks

Abstract

The invention relates to a method (10), to a system (100), and to a computer program product for ascertaining current measurement values, having a receiving step (20) in which a receiving module receives a data transmission signal (25) from a measuring converter, wherein the data transmission signal (25) comprises digital current data based on analog current data measured by an interruption-free current measuring device; a processing step (30) in which a current measurement value (35) is ascertained in the receiving module on the basis of the digital current data and at least one property of the interruption-free current measuring device; and a providing step (60) in which the current measurement value (35) is provided.

Description

[0001] Method, system and computer program product for processing electricity data in geographically distributed functional blocks

[0002] Current transducers are devices that convert and provide current and, where applicable, voltage data from sensors into corresponding measured values ​​of current and, where applicable, voltage. Furthermore, some current transducers can also provide control or evaluation functions for the measurement objects based on the measured values ​​of current and, where applicable, voltage. Today, current transducers are installed as devices in many applications, for example, in control cabinets for system controls. In some cases, the current is determined in the device itself, e.g., via a shunt measurement—a so-called direct measurement. Other devices use sensors such as Rogowski coils or current transformers to measure the electrical current. The MCR-S10-50-UI-SW-DCI-NC product from Phoenix Contact is an example of the latter.

[0003] With such conventional transmitters, the number of measurement channels is limited by the hardware. To overcome this limitation, some offer expansion modules or stackable measurement channels for such conventional transmitters. However, this is inflexible and requires the strict use of uniform or coordinated transmitters or expansion modules.

[0004] The technical challenge is therefore to make the processing of current data more flexible and to overcome the limitations on the number of measurement channels inherent in conventional measuring transducers due to their hardware. An alternative or additional challenge is to be able to spatially separate the processing of electrical measurement data for determining the measured values ​​from the location of the measurement or the initial processing of the measurement signal.

[0005] The object(s) is / are achieved by the features of each of the independent claims. Expedient embodiments and advantageous further developments of the invention are specified in the dependent claims.

[0006] Embodiments of the invention, which can be optionally combined with one another, are disclosed below with partial reference to the figures. In particular, features mentioned in the context of the system can also be implemented correspondingly in the method, for example, by a step of providing the corresponding feature or by a step of executing a function of the system. Furthermore, the system can comprise any feature mentioned in the context of the method and can be configured to execute any step mentioned in the context of the method.

[0007] A first aspect relates to a method for determining current measurement values. The method comprises a receiving step in which a receiving module receives a data transmission signal from a measurement converter. The data transmission signal comprises digital current data based on analog current data measured with an uninterruptible current measuring device. The method further comprises a processing step in the receiving module in which a current measurement value is determined based on the digital current data and optionally at least one property of the uninterruptible current measuring device. The method further comprises a providing step in which the current measurement value is provided.

[0008] The current measured values ​​(short: measured values) can further comprise energy measured values ​​and / or power measured values ​​(e.g., provided with a time stamp). Embodiments of the invention provide for at least partially spatially separating the processing of electrical measurement data for determining the current measured values ​​from the location of the measurement or the initial processing of the measurement signal (e.g., when creating the digital current data based on analog current data). This processing can be implemented as a computer-implemented method or computer program product separate from the measurement as a network function. In other words, for the invention, parts of the functions and methods that are conventionally implemented in the respective measuring transducers or the like can be extracted and implemented in a software container (such as a Docker container).There, the processing of the values ​​that is currently performed in the current transducer is performed. In addition, further processing can be performed based on the increased computing power of a central hardware (cloud, server) and, alternatively or additionally, based on the combined measurement results of a plurality of connected inventive transducers.

[0009] Advantageously, in the network connection with one or many network-capable measuring transducers and alternatively or additionally through packet-oriented communication, the dependence of the processing on conventional current measuring transducers (for example a division ratio in the current measurement) and a limitation of the number of measuring channels can be eliminated.

[0010] A current measurement corresponds to the value of the current flowing in a conductor measured with a current measuring device. The current measuring device can output the measured value directly. In this case, however, the current measuring device only outputs an indication of the current flowing in the conductor, the so-called analog current data. This must first be converted into a corresponding measured value, which may involve taking various parameters into account. Relevant parameters can include the measuring principle of the current measuring device, its type and design, the characteristics of the measured current, etc.

[0011] The uninterrupted nature of the current measuring device can refer to the measured circuit or its current conductor, which does not need to be modified, in particular, interrupted, to accommodate the current measuring device. Accordingly, subsequent installation of the current measuring device is often possible without further (e.g., electrical) modifications to the existing circuit or current line.

[0012] A measuring transducer can be defined according to DIN 1319. It is directly connected to a measuring device, in this case a current measuring device, and receives its output signal, for example, the analog current data of a low current. The measuring transducer then processes this analog current data and, in the conventional way, determines at least the associated current measured values. The inventive measuring transducer implements only part of the aforementioned functionality on-site near the current measuring device, which can also be designed as an uninterruptible current measuring device. The on-site functionality preferably includes the acquisition of the analog current data, its processing, and forwarding to a receiving unit. This unit assumes the remaining processing functions of the conventional measuring transducer where appropriate and, if necessary, supplements additional evaluations.Typically, based on the current measurement value, further signals can be determined to control the measurement objects and alternatively or additionally for maintenance or error indications or the like.

[0013] The current measurements are determined by uninterruptible current measuring devices, which can be configured, for example, as Rogowski coils, Hall sensors, or similar devices. The uninterruptible current measuring devices are arranged for current measurement in such a way that they do not interrupt the current-carrying conductors and elements. This is particularly advantageous for conducting high currents. The inventive measuring converter, also called a network-capable measuring converter, can be configured to output its measurement results as data packets at a network interface. The network-capable measuring converter can also be referred to as a packet-oriented measuring converter or digital measuring converter. The network-capable measuring converter can comprise a sensor connection for an uninterruptible current measuring device, in particular a Rogowski coil, an analog-to-digital converter, and a network interface.Examples of an uninterruptible current measuring device, depending on the measuring principle, are a Rogowski coil (e.g. for inductive measurement of an alternating current), a current transformer (e.g. a transformer) or a direct measurement of the current (e.g. with a so-called "shunt" resistor as a measuring transducer).

[0014] The measured values ​​received via the network and / or in data packets are also referred to as digitized measured values. The electrical quantities, such as digital current data, are transmitted to the receiving system according to the invention.

[0015] A data transmission signal is exchanged between the measuring device and the receiving module. It is preferably suitable for transmission via wired or wireless connections, and particularly for networks that connect the measuring transducer and the receiving module. It preferably adheres to agreed standards for such networks to improve transmission quality. In this case, the data transmission signal also includes digital current data based on the analog current data measured with an uninterruptible current measuring device.

[0016] The property of the uninterruptible current measuring device can be its type (e.g., its physical-technical measuring principle), which can be implemented, for example, as a Rogowski coil, a Hall sensor, or the like. Depending on the type, the analog current data vary, for example, with regard to their relationship to the measured current, its changes, the measuring ranges, and more. Optionally, different designs of the same type can also differ, for example, with regard to the features mentioned above. The type-dependent and, additionally, at least some of the design-dependent parameters can be taken into account in the measuring converter. Alternatively or additionally, the property can include a spatial positioning (e.g., a relative arrangement and / or orientation of the current conductor and the current measuring device).

[0017] A provision step, in which the current measurement value is made available for further processing or display, can include storing the current measurement value in a memory of the receiving module. It can also include transmission to another entity (a central processing unit). The provision can be parameterized and, in particular, can be carried out in coordination with the other entity.

[0018] This can advantageously reduce the complexity of the on-site measuring transducer.

[0019] In embodiments, in a further processing step, the measured current value can be based on a parameterization related to the uninterruptible current measuring device and, additionally or alternatively, on the measured analog current data. A control signal can be generated based on the measured current value and, additionally or alternatively, on an application. The application can be based on a consumer whose current is measured by the uninterruptible current measuring device. The control signal can optionally be designed to provide a threshold exceedance signal, a peak load detection signal, a monitoring signal, and, additionally or alternatively, a digital on / off signal. The further processing step can take place in the measuring converter or in the receiving module, or elsewhere.

[0020] The parameterization can include the conversion ratio of the Rogowski coil or other current measuring device, which is dependent on the type or design, consideration of the arrangement of the current measuring device on the current-carrying conductor to be measured, and so on. For example, the property of the uninterruptible current measuring device, for example, the type (e.g., a Rogowski coil), can be communicated to the measuring converter. Alternatively or additionally, the parameterization of the analog current data can take into account nonlinearities of the current measuring device, particularly in certain measuring ranges, temperature and, if applicable, humidity dependencies, as well as external influences, for example, in the form of electromagnetic radiation.

[0021] The control signal can be transmitted from the receiving module to the measuring transducer. It can be generated based on the measured current value and, in addition to or alternatively, based on the application. For example, it can trigger a setting of the measuring transducer that influences the processing of the analog current data, the data transmission signal, or similar. For example, a coding depth of the digital current data can be specified, or the structure of the data transmission signal, the acquisition frequency of the analog current data, their spacing, triggers, and so on. Furthermore, the control signal can typically emulate the outputs of conventional measuring transducers. Alternatively, the control signal can also be further processed in a processing section of the receiving device.Alternatively or additionally, a first control signal can be transmitted to the measuring converter and a second control signal can be transmitted to the further processing part of the receiving device, wherein the contents of the control signal can be divided between the first control signal and the second control signal.

[0022] The application takes into account the characteristics of the measured load. For example, this could be a motor whose starting currents, load peaks, and optionally their number and, additionally or alternatively, their timing are to be determined. Alternatively, error monitoring can be performed based on the measured current value, its change, or its absolute value.

[0023] This allows the individual properties of the current measuring device as well as the user requirements regarding the consumer to be taken into account.

[0024] In other embodiments, the parameterization may result in a normalization of the digital current data. Optionally, the normalization may take into account a relationship between the measured current and the digital current data.

[0025] Standardization can be understood as compensating for the distortions in the measured current value caused by the current measuring device. Standardization can encompass all deviations, which in turn can include the various type- and design-dependent scaling factors, current-dependent deviations, compensation for detected environmental influences, and the like. Accordingly, standardization can also react to changes during ongoing measurement operations and adapt accordingly. For example, standardization can include the division ratio of the measured current value to analog current data, e.g., for a specific design of the Rogowski coil.

[0026] This advantageously ensures the comparability of different current measurement values ​​based on different types and, additionally or alternatively, on different embodiments of current measuring devices. In further embodiments, the method can comprise a setting signal that signals at least one setting to the measuring converter. The setting signal can signal to the measuring converter that the type and / or properties of the uninterruptible current measuring device are being considered. Optionally, the setting signal can signal to the measuring converter that analog voltage data from the uninterruptible current measuring device should be acquired and processed in the measuring converter.

[0027] The setting signal can be based on the control signal received from the measuring transducer and can correlate with it in addition to or as an alternative to the setting signal. The aforementioned settings can be initiated in the measuring transducer according to the control signal. Furthermore, the setting signal can also trigger the acquisition and processing of analog voltage data from the uninterruptible current measuring device in the measuring transducer. This acquisition and processing of analog voltage data can be carried out in addition to the acquisition and processing of analog current data and can result in the provision of digital voltage data in the transmission signal. Alternatively or additionally, corresponding energy data and / or power data (e.g., time-stamped) can also be acquired and provided in the transmission signal. The setting signal can also trigger a time-limited setting in the measuring transducer.The setting signal can be received by the measuring converter once or several times during the measuring operation with the same or different content.

[0028] Advantageously, the functionality of the measuring converter can be adapted to dynamically changing requirements even during ongoing measuring operations.

[0029] In exemplary embodiments, the receiving module can be implemented as software for execution on a server or a cloud. The software can be configured as portable software for execution on different systems, in particular by incorporating all necessary routines and adaptations into a single file. Optionally, the software can be implemented as container software, in particular as a Docker container.

[0030] Servers or clouds serve as remote computing units, each offering standardized computing functions.

[0031] Container software is a software package that contains all the elements required to run in virtually any environment. Containers thus virtualize the operating system. They can be run anywhere, whether in a private data center, the public cloud, or on a developer's personal laptop. Accordingly, container software is more portable than conventional software, which, among other things, is tightly integrated with the operating system.

[0032] Docker containers contain a Docker image that can be processed on a cloud system or in a PLCnext app (a product name from Phoenix Contact). The Docker container can be run on a wide variety of systems.

[0033] This allows for easy portability of the receiver module's software. Furthermore, the software container enables distribution of the computer program product to the measurement data processing location, which may be spatially separate from the measurement site and / or centralized for multiple measurement sites, without requiring specific adaptations.

[0034] In other embodiments, the receiving module can be implemented as firmware. Optionally, the receiving module can be connected to a web-based control module.

[0035] Firmware is software embedded in electronic devices that performs basic functions. It occupies an intermediate position between hardware and application software. It is hardware-specific and therefore cannot run on other, different hardware.

[0036] The process can be implemented using a company-specific container management system, known in technical terms as Universal Container Management (UMC). In particular, the UMC can also be configured as an ECM (Electrical Current Measurement) for measuring currents. Optionally, the process can be implemented as part of a Docker container.

[0037] Unlike firmware, ECM is not hardware-specific and can run on various hardware platforms. For example, an ECM system can be designed for use with specific cloud platforms or operating systems.

[0038] A web-based control module (technically known as web-based management, WBM) is a control unit that is logically connected to the receiver module firmware. It can be configured as a higher-level control unit and control the receiver module firmware together with at least one other receiver module firmware.

[0039] Advantageously, improved adaptations of the execution environment, the hardware, for the receiver module firmware can be achieved.

[0040] In further embodiments, the receiving module can receive a further data transmission signal from a further measuring converter. Optionally, the further measuring converter can comprise a plurality of additional measuring converters.

[0041] In other words, the receiving module can receive a plurality of data transmission signals from a plurality of transducers. The receiving module can also additionally send a plurality of data transmission signals to the plurality of transducers. Thus, a plurality of transducers are connected to the receiving module, whereby communication with each individual transducer can comprise the communication with a transducer as described above. The number of connectable transducers is limited only by the available or available computing power of the server or cloud. In object-oriented programming, an additional channel would be an additional instance of a digital transducer.

[0042] This can advantageously achieve greater flexibility with respect to conventional measuring transducers, whereby the number of centralizable functions of the respective measuring transducers can be realized by adapting the computing power in the server or cloud.

[0043] In exemplary embodiments, the data transmission signal and optionally the additional data transmission signal can be configured as a network-capable data transmission signal and optionally as an additional data transmission signal. Further optionally, the data transmission signal and optionally the additional data transmission signal can be configured as a signal for at least one of the networks (or network types): Interbus, Profibus, Profinet, Ethernet, EtherCAT, CAN bus, HART, WLAN, or cellular network.

[0044] A network-capable data transmission signal can be designed for a wired network and, in addition or alternatively, for a wireless network. Combined networks can also be used, for example, where the terminal devices are reached via WLAN, while the remaining connections are wired. Preferably, the data transmission signal should conform to a standard. This allows components from different manufacturers to be used, and scaling with additional measuring converters is facilitated. The standards mentioned are briefly outlined below. Ethernet is a technology that specifies software and hardware for wired data networks, originally intended for local data networks. It enables data exchange in the form of data frames between devices connected in a local network. Interbus is a fieldbus system for widespread use within a company.An Interbus covers various application areas, from the sensor / actuator level in process automation to monitoring PCs. Profibus is a standardized bus system for industrial communication and data transmission, primarily in automation technology. It is a multi-master system, meaning that multiple components can act as masters to control communication processes. Profinet (PROFINET) is the open Industrial Ethernet standard of the PROFIBUS user organization. Internationally established IT standards such as TCP / IP are used for communication. EtherCAT is a real-time Ethernet. The protocol, disclosed in IEC standard 61158, is suitable for both hard and soft real-time requirements in automation technology. The CAN bus is a bus system with a data transmission rate of up to 1 Mbit / s, enabling serial data exchange between control units.HART is the global standard for sending and receiving digital information over 4-20 mA analog current loops, which connect the vast majority of field instruments to distributed control systems. A cellular network is a type of communications network consisting of a series of interconnected cells, each capable of sending and receiving data transmissions. This type of network is commonly used for cellular phone networks and other wireless networks. WLAN (Wireless Local Area Network) is a set of standards for a radio network based on Ethernet.

[0045] This makes it advantageous to rely on proven, powerful, readily available and therefore inexpensive technology.

[0046] In other embodiments, a result can be provided in an evaluation step. The result is based on the current measurement value and, additionally or alternatively, on a voltage measurement value, which in turn is based on the analog voltage data from the measuring converter. The result further comprises the further current measurement value and, additionally or alternatively, a further voltage measurement value, which in turn is based on the further analog voltage data. Optionally, the result can include at least one statement regarding a deviation of the current measurement values ​​and, additionally or alternatively, the voltage measurement values ​​from the mean value, an exceedance or undershoot of a threshold value, an indication of a usage pattern and, additionally or alternatively, a connection to historical current measurement values ​​and, additionally or alternatively, to historical voltage measurement values.

[0047] The result is derived from a comparison of current and, additionally or alternatively, voltage measurements with other corresponding measured values. These can be measured values ​​based on data transmission signals from other measuring transducers. In addition or alternatively, this can also include comparisons with stored data. Accordingly, a wide variety of evaluations can be created.

[0048] These evaluations can also be considered for predictive maintenance. They can also lead to changes in the settings of the measuring transducers, for example, using the control signal. In addition or alternatively, they can also be used to at least temporarily correct the measured values ​​(analog current data, analog voltage data).

[0049] Advantageously, further processing of the measurement data based on supplementary information can thus be provided. A second aspect of the invention relates to a system for determining current measurement values. The system comprises a receiving module configured to carry out a method according to the first aspect or the associated embodiments. The system further comprises a measurement converter for acquiring and processing analog current data from an uninterruptible current measuring device. The uninterruptible current measuring device can be designed as a Rogowski coil, a plug-on current transformer, a tubular current transformer, or a wound current transformer and can exchange corresponding signals with the system. Optionally, the uninterruptible current measuring device can also provide voltage data (analog voltage data).

[0050] The receiving module and the measuring transducer can be located at different geographical locations and connected by a network. Optionally, the system can comprise a plurality of measuring transducers, all of which can be connected to the receiving module. The measuring transducer consists of hardware and software and is particularly designed to receive measured values ​​(analog current data, optionally analog voltage data) provided by an uninterruptible current measuring device. The receiving module preferably consists of software, which can also be implemented as a software container, for example, as a Docker container.

[0051] This advantageously reduces the complexity of the existing on-site measuring transducer and allows the measured values ​​(analog current data, optionally analog voltage data) of the various measuring transducers to be processed together.

[0052] In other embodiments, the measurement converter may include a power supply fed from a data transmission component of the measurement converter. The data transmission component may be fed from the connected network. The measurement converter may include an analog-to-digital converter configured to receive analog current data of alternating current determined by the uninterruptible current measuring device. The data transmission component is configured to send and receive data transmission signals. The system further includes a computing unit for controlling the analog-to-digital converter and for controlling the data transmission component. The computing unit is configured to convert digital current data based on the analog current data processed by the analog-to-digital converter into data transmission signals via the data transmission component. The power supply feeds the analog-to-digital converter and the computing unit.

[0053] The power supply for the measuring converter is located in a housing of the measuring converter. It is fed from the network, which can be, for example, in the form of an Ethernet power supply for connected devices (technically known as Power of Ethernet, PoE). Power supply refers to the current and voltage supply of the measuring converter. This internal power supply, in turn, feeds the other components of the measuring converter. The supply voltage and current can be customized for each component. Furthermore, the power supply can include a sleep mode for at least the analog-to-digital converter and, alternatively or additionally, for the computing unit. Optionally, the length and, alternatively or additionally, the time of the sleep modes for the analog-to-digital converter and for the computing unit can differ.Furthermore, the power supply can provide different voltages for the analog-to-digital converter and / or the arithmetic unit.

[0054] This advantageously avoids the need for an external power supply (voltage and current supply) for the measuring converter.

[0055] In further embodiments, the measurement converter can receive a trigger signal from the receiving module for acquiring the analog current data. Optionally, the trigger signal can include an acquisition time of the analog current data and, additionally or alternatively, an output format of the analog current data and, additionally or alternatively, a scaling instruction for acquiring the analog current data and, additionally or alternatively, an encoding instruction for the analog current data.

[0056] The trigger signal can be transmitted from the central receiving module. It can be transmitted to the measuring transducer as a coded signal according to the transmission standard used. It can include an identification that is reused, for example, when transmitting the analog current data acquired according to the trigger signal. It can also be transmitted depending on digital current data from other measuring transducers. Furthermore, the trigger signal can include parameterization of the measurement to be performed, which, in addition to the parameter settings mentioned above, can include information for the uninterruptible current measuring device.

[0057] This advantageously allows for dynamic and flexible control of the current measurement value acquisition.

[0058] In exemplary embodiments, the receiving module can have an anomaly detection function for the measured current value. The anomaly detection function can be configured for each measuring transducer and, additionally or alternatively, for a combined view of the measuring transducer and at least one other measuring transducer. Optionally, the anomaly detection function can be based on artificial intelligence algorithms (K1).

[0059] Anomaly detection differs from an error message in that the transducer is still operating within the specified range and is delivering corresponding measured values, but these deviate significantly from the measured values ​​of a majority of transducers. These deviations can be caused by gradual deterioration of the transducer's components and thus transmit incorrect information that cannot be detected without comparison with the measured values ​​of other transducers.

[0060] Anomaly detection can be based on artificial intelligence (AI) algorithms. Artificial intelligence (AI) is characterized by its own learning ability based on provided training data. Accordingly, anomaly detection can be improved by AI, for example, by evaluating detected and assessed deviations of individual measuring transducers or groups of measuring transducers in the context of the training data. This allows anomaly classes to be created, which, when combined with additional parameters, can lead to different reactions. For example, a temperature or pressure dependence of current measuring devices can be detected, leading to deviations at specific locations at specific times or other parameters, which can also lead to targeted corrections of certain digital measured values. Predictive maintenance can also be based on AI predictions.

[0061] This can advantageously lead to an improvement in the functional monitoring of the measuring transducers in conjunction with a refinement of an ever-improving assessment of the operational readiness of the individual measuring transducers.

[0062] In other embodiments, the receiving module can be configured to register the first measuring transducer and the additional measuring transducer. The receiving module can be configured to transmit the trigger signal only to registered measuring transducers. Optionally, the registration can include authentication of the measuring transducer.

[0063] Registration of the measurement converter in the receiving module can be implemented as a simple registration. Alternatively or additionally, the registration can include checks and, additionally or alternatively, notifications. The checks can include an admissibility check of the registration, which includes at least one of the following aspects: checking against lists (blacklist, whitelist), plausibility check, or authentication. The check can also include contact with other institutions outside the system.

[0064] The registration-related trigger signal can be parameterized similarly to the general trigger signal as described above.

[0065] In addition to the measuring transducer and the additional measuring transducer, many additional measuring transducers can be registered in the receiving device. The registration can also take into account differing properties of the measuring transducers through different registration steps. The documentation of differing properties of the measuring transducers can also be implemented as part of the registration process.

[0066] This advantageously allows the coupling of the measuring transducer and the receiving device to be controlled and documented so that unwanted couplings can be prevented.

[0067] A third aspect of the invention relates to a computer program product for executing a method according to the first aspect or the associated embodiments. The computer program product is executed on a computer.

[0068] This can advantageously reduce the complexity of the on-site measuring transducer.

[0069] The invention is explained in more detail below with reference to the attached drawings using preferred embodiments which can be optionally combined with one another.

[0070] Show:

[0071] Fig. 1 is a schematic representation of the method according to the first aspect of the invention and its embodiments,

[0072] Fig. 2 is a schematic representation of the system according to the second aspect of the invention and associated embodiments, and

[0073] Fig. 3 is a schematic representation of the system according to further associated embodiments.

[0074] Fig. 1 shows a schematic representation of the method 10 according to the first aspect of the invention and its exemplary embodiments. The method 10 for determining current measurement values ​​comprises a receiving step 20, in which a receiving module receives a data transmission signal 25 from a measurement converter. The data transmission signal 25 comprises digital current data based on analog current data measured by an uninterruptible current measuring device. The method further comprises a processing step 30 in the receiving module, in which a current measurement value 35 is determined based on the digital current data and optionally at least one property of the uninterruptible current measuring device. In addition, the method comprises a providing step 60, in which the current measurement value 35 is provided.

[0075] Furthermore, Fig. 1 shows an optional further processing step 40, in which the current measurement value 35 is based on a parameterization related to the uninterruptible current measuring device and, additionally or alternatively, on the measured analog current data. Additionally or alternatively, a control signal 37 is generated based on the current measurement value and an application. The application is based on a consumer whose current is measured by the uninterruptible current measuring device. Optionally, the control signal 37 can be configured to provide a threshold exceedance signal, a peak load detection signal, a monitoring signal, and, additionally or alternatively, a digital on / off signal.

[0076] In addition, the parameterization method 10 can cause a normalization of the digital current data (not shown). Optionally, the normalization can take into account a relationship between the measured current and the digital current data.

[0077] Furthermore, Fig. 1 optionally shows a setting signal 50 that signals at least one setting to the measuring converter. The setting signal 50 signals to the measuring converter that the type and / or properties of the uninterruptible current measuring device should be taken into account. Optionally, the setting signal 50 can signal to the measuring converter that analog voltage data from the uninterruptible current measuring device should be acquired and processed in the measuring converter.

[0078] Additionally, method 10 may include the receiving module being implemented as software for execution on a server or a cloud (not shown). The software may be configured as portable software for execution on different systems. Optionally, the software may be implemented as container software, in particular as a Docker container (not shown).

[0079] Additionally, method 10 may include the receiving module being implemented as firmware. Optionally, the receiving module may be connected to a web-based control module (not shown).

[0080] Furthermore, Fig. 1 optionally shows that the receiving module receives a further data transmission signal 27 from a further measuring transducer. Optionally, the further measuring transducer can comprise a plurality of additional measuring transducers. In other words, a plurality of measuring transducers can transmit the data transmission signal 27 to the receiving module.

[0081] Additionally, the method 10 may include the data transmission signal 25 and, if present, the additional data transmission signal TI being configured as a network-capable data transmission signal 25 and a network-capable additional data transmission signal 27 (not shown). Optionally, the data transmission signal 25 and the additional data transmission signal 27 may be configured as a signal for at least one of the following networks: Interbus, Profibus, Profinet, Ethernet, EtherCAT, CAN bus, HART, WLAN, or cellular network (not shown).

[0082] Furthermore, Fig. 1 optionally shows that a result 75 is provided in an evaluation step 70. The result 75 is based on the current measurement value and, additionally or alternatively, on a voltage measurement value, which in turn is based on the analog voltage data. Furthermore, the result 75 is based on the further current measurement value and, additionally or alternatively, on a further voltage measurement value, which in turn is based on the further analog voltage data. Optionally, the result 75 can include at least a statement regarding a deviation of the current measurement values ​​and, additionally or alternatively, the voltage measurement values ​​from the mean value, an exceedance of a threshold value, an indication of a usage pattern and / or a connection with historical current measurement values ​​and, additionally or alternatively, historical voltage measurement values.

[0083] Fig. 2 shows a schematic representation of the system 100 according to the second aspect of the invention and associated embodiments. The system 100 for determining current measurement values ​​comprises a receiving module 110, which is designed to implement one of the method claims according to the first aspect of the invention. The system further comprises a measurement converter 150 for acquiring and processing analog current data from an uninterruptible current measuring device 200. The uninterruptible current measuring device 200 can be designed as a Rogowski coil, a plug-in current transformer, a tubular rod current transformer, or a wound current transformer. Optionally, the uninterruptible current measuring device 200 can also provide voltage data.

[0084] The measurement converter 150 may include a power supply 160, which is fed (supplied with a supply voltage) from a data transmission component 170 of the measurement converter 150. Furthermore, the measurement converter 150 may include an analog-to-digital converter 180, which is configured to receive analog current data of alternating current determined by the uninterruptible current measuring device 200. The data transmission component 170 is configured to send and receive data transmission signals 25. The system 100 further includes a computing unit 190 for controlling the analog-to-digital converter 180 and for controlling the data transmission component 170, wherein the computing unit 190 is configured to send digital current data based on the analog current data processed by the analog-to-digital converter 180 in data transmission signals 25 via the data transmission component 170.The power supply 160 feeds (supplies with a supply voltage) the analog-to-digital converter 180 and the arithmetic unit 190.

[0085] The measurement converter 150 receives a trigger signal from the receiving module 110 for acquiring the analog current data. Optionally, the trigger signal may include a time for acquiring the analog current data and, additionally or alternatively, an output format for the analog current data. Further optionally, the trigger signal may include a predefined interval for cyclical acquiring of the current data. Additionally or alternatively, a scaling instruction for acquiring the analog current data and, additionally or alternatively, an encoding instruction for the analog current data may be included.

[0086] Fig. 3 shows a schematic representation of system 100 according to further associated embodiments. The uninterruptible current measuring device 200 and the measuring transducer 150, 155 are arranged in a housing 250. If the uninterruptible current measuring device 200 is designed as a Rogowski coil in this case, the measuring transducer can be integrated into the existing housing of the Rogowski coil. The network connection 310 between the measuring transducers 150, 155 and the receiving module 110 can typically be implemented as an Ethernet connection.

[0087] The receiving module 110 optionally has an anomaly detection function for the measured current value (not shown). The anomaly detection function can be configured for each measuring transducer 150 and, additionally or alternatively, for a combined view of the measuring transducer 150 and at least one further measuring transducer 155. It can also be configured for a combined view of a plurality of measuring transducers. Optionally, the anomaly detection function can be based on algorithms for artificial intelligence (KI).

[0088] The receiving module 110 can be configured to register the first measuring transducer 150 and the further measuring transducer 155 (not shown). Optionally, the receiving module 110 is configured to transmit the trigger signal only to registered measuring transducers 150, 155. Optionally, the registration can include authentication of the measuring transducer 150, 155.

[0089] A company container management system firmware (UMC or ECM FW) 112 can form a basis for the receiver module's software, which is designed as container software and can be configured, for example, as a Docker container. Furthermore, the ECM FW 112 can be logically connected to an external company container management unit in web-based management (Enterprise Container Management in web-based management, ECM WBM) 114. Accordingly, an overall view of multiple systems with the associated measuring transducers 150, 155 is enabled. In other words, the invention can also be described as follows: Today, known current measuring transducers are installed as devices in many applications. In some cases, the current is determined in the device itself, e.g., via a shunt measurement. This can be referred to as a direct measurement. Other devices use sensors (uninterruptible current measuring device 200) such as Rogowski coils or current transformers to measure the electrical current.A corresponding product from Phoenix Contact is known as the MCR-S10-50-UI-SW-DCI-NC. The number of measurement channels is limited by the current transducer's hardware. Some companies already offer expansion modules or stackable measurement channels.

[0090] The invention proposes to separate at least part of the calculation of electrical values ​​from the known current transducers and to offer this as geographically remote software. The current state of the art for this would be, for example, a Docker container for this software. This container can run on a wide variety of systems. Together with, for example, an inventive digital Rogowski coil (previous Rogowski coil 200 in conjunction with the inventive measuring transducer 150) or an inventive digital current transformer (uninterruptible current measuring device 200 deviating from a Rogowski coil in conjunction with the inventive measuring transducer 150), the dependence on hardware and measuring channels is eliminated. The digitized measurement data can be processed, for example, in the Docker image on a cloud system or in a PLCnextApp (a product name from Phoenix Contact).In object-oriented programming, an additional measuring channel would simply be an additional instance of a digital measuring transducer. The electrical quantities (analog current data, possibly analog voltage data) are digitized by the measuring transducer 150 and sent to the cloud or PLCnext via a network-based protocol, e.g., Ethernet. There, the digitized values ​​(digital current data, digital voltage data) are processed, which is currently performed on the hardware of existing measuring transducers. Due to the inventively possible synopsis of the digitized values ​​(digital current data, digital voltage data) of all inventive measuring transducers 150, an expansion of the function, for example, to include artificial intelligence (Kl) with anomaly detection, would also be readily possible, since additional computing power can be booked in the cloud system, for example.

[0091] In summary, the advantages of the receiver module 110 in conjunction with the measuring converter 150, which can also be referred to as a digital sensor, can be named as follows:

[0092] • A power saving mode (technically known as Power Save Mode) is possible, which can optionally be ended with an alarm signal.

[0093] • It is possible to use the power supply from the connected network. This can offer different energy classes from which you can choose. In Ethernet, this power supply is technically called PoE (for "Power over Ethernet").

[0094] • The previously necessary cabling effort is significantly reduced

[0095] • This results in a reduction in the number of devices required, such as expansion modules or stackable measurement channels. This results in CO2 savings, particularly during the manufacturing of these devices.

[0096] • The mean time between failures MTTF (Mean Time To Failure) is reduced.

[0097] • A connection to a higher-level system, for example a company container management system 114, is possible

[0098] • Predictive maintenance becomes possible based on predicted wear and tear. In particular, as an element of predictive maintenance, warnings can be issued in the event of deviations in total flow rates.

[0099] • The summary knowledge of a system by combining the results and properties of the measuring transducers 150 involved enables a variety of additional functions (sum function).

[0100] In particular, individual transducers 150 can be specifically parameterized to improve measurement quality. For example, the operating range of individual transducers 150 can be preset (technically known as teach-in mode).

[0101] Although the invention has been described with reference to exemplary embodiments, it will be apparent to those skilled in the art that various changes may be made and

[0102] Equivalents may be used as replacements. Furthermore, many modifications may be made to adapt a particular installation situation or circuit arrangement to the teachings of the invention. Consequently, the invention is not limited to the disclosed embodiments, but encompasses all embodiments that fall within the scope of the appended claims.

[0103] Reference symbol

[0104] 10 procedures

[0105] 20 Reception step

[0106] 25 Data transmission signal

[0107] 27 Additional data transmission signal

[0108] 30 processing steps

[0109] 35 Current measurement value

[0110] 37 Control signal

[0111] 40 Further processing step

[0112] 50 setting signal

[0113] 60 Deployment step

[0114] 70 evaluation steps

[0115] 75 results

[0116] 100 systems

[0117] 110 Receiver module

[0118] 112 Enterprise Container Management System Firmware (Enterprise Container

[0119] Management Firmware, ECM FW), for example functionality extracted from the firmware and / or implementation of the procedure 10

[0120] 114 Enterprise Container Management in Web-based Management (ECM WBM)

[0121] 150 measuring transducers

[0122] 155 Additional measuring converter

[0123] 160 Power supply

[0124] 170 Data transmission component

[0125] 180 analog-to-digital converters

[0126] 190 computing unit

[0127] 200 Uninterruptible current measuring device

[0128] 250 housings for the uninterruptible current measuring device and the measuring converter

[0129] 300 Network

[0130] 310 network connections

Claims

Claims 1. A method (10) for determining current measurement values, comprising: a receiving step (20) in which a receiving module receives a data transmission signal (25) from a measuring converter (150), wherein the data transmission signal (25) comprises digital current data based on analog current data measured by an uninterruptible current measuring device, a processing step (30) in the receiving module in which a current measurement value (35) is determined on the basis of the digital current data and at least one property of the uninterruptible current measuring device, and a providing step (60) in which the current measurement value (35) is provided.

2. The method according to claim 1, further comprising: a further processing step (40), wherein the current measurement value (35) is based on a parameterization with respect to the uninterruptible current measuring device and / or with respect to the measured analog current data, and / or wherein a control signal (37) is generated based on the current measurement value and an application, wherein the application is based on a consumer whose current is measured by the uninterruptible current measuring device, optionally wherein the control signal (37) is designed to provide a threshold value exceedance, a peak load detection signal, a monitoring signal and / or a digital on-off signal.

3. The method (10) according to claim 2, wherein the parameterization effects a normalization of the digital current data, optionally wherein the normalization takes into account a relationship between the measured current and the digital current data.

4. The method according to any one of claims 1-3, wherein the method (10) comprises sending a setting signal (50) that signals at least one setting to the measuring converter (150), wherein the setting signal (50) signals to the measuring converter (150) consideration of the type and / or properties of the uninterruptible current measuring device, optionally wherein the setting signal (50) signals to the measuring converter (150) acquisition and processing of analog voltage data from the uninterruptible current measuring device in the measuring converter (150).

5. Method (10) according to one of claims 1-4, wherein the receiving module is designed as software for running in a server or a cloud, wherein the software is designed as portable software for running on different systems, optionally wherein the software is implemented as container software, in particular as a Docker container.

6. The method (10) according to any one of claims 1-5, wherein the receiving module is implemented as firmware, optionally wherein the receiving module is in communication with a web-based control module.

7. The method (10) according to any one of claims 1-6, wherein the receiving module receives a further data transmission signal (27) from a further measuring converter (150), optionally wherein the further measuring converter (155) comprises a plurality of additional measuring converters (155).

8. Method (10) according to one of claims 1-7, wherein the data transmission signal (25) and, with reference back to claim 7, the further data transmission signal (27) is designed as a network-capable data transmission signal (25) and network-capable further data transmission signal (27), optionally wherein the data transmission signal (25) and the further data transmission signal (27) is designed as a signal for at least one of the networks Interbus, Profibus, Profinet, Ethernet, EtherCAT, CAN bus, HART or cellular network.

9. The method (10) according to any one of claims 4-8, wherein in an evaluation step (70) a result (75) is provided, wherein the result (75) is based on the current measurement value and / or a voltage measurement value based on the analog voltage data, and the further current measurement value and / or a further voltage measurement value based on the further analog voltage data, optionally wherein the result (75) comprises at least one statement on a deviation of the current measurement values ​​and / or voltage measurement values ​​from the mean value, an exceeding of a threshold value, an indication of a usage pattern and / or a connection with historical current measurement values ​​and / or historical voltage measurement values.

10. System (100) for determining current measurement values, comprising: a receiving module (110) which is designed to carry out one of the method claims 1 - 9, a measuring converter (150) for detecting and processing analog current data of an uninterruptible current measuring device (200), wherein the uninterruptible current measuring device (200) is designed as a Rogowski coil, as a plug-on current transformer, as a tubular rod current transformer or as a wound current transformer, optionally wherein the uninterruptible current measuring device (200) provides voltage data.

11. System (100) according to claim 10, wherein the measuring converter (150) comprises a power supply (160) fed from a data transmission component (170) of the measuring converter (150), wherein the measuring converter (150) comprises an analog-to-digital converter (180) which is designed to receive analog current data of alternating current which is determined by the uninterruptible current measuring device (200), wherein the data transmission component (170) is designed to send and receive data transmission signals (25), the system (100) further comprises a computing unit (190) for controlling the analog-to-digital converter (180) and for controlling the data transmission component (170), wherein the computing unit (190) is designed to send digital current data based on the analog current data processed by the analog-to-digital converter (180) in data transmission signals (25) via the data transmission component (170), wherein the power supply (160) feeds the analog-to-digital converter (180) and the computing unit (190).

12. The system (100) of claim 10 or 11, wherein the measurement converter (150) receives a trigger signal from the receiving module (110) for acquiring the analog stream data, optionally wherein the trigger signal includes or indicates a acquiring time of the analog stream data and / or an output format of the analog stream data and / or a scaling instruction for acquiring the analog stream data and / or an encoding instruction of the analog stream data.

13. System (100) according to claim 10 to 12, wherein the receiving module (110) has an anomaly detection of the current measurement value, wherein the anomaly detection is designed for each measuring converter (150) and / or for a synopsis of the measuring converter (150) and at least one further measuring converter (155), optionally wherein the anomaly detection is based on algorithms for artificial intelligence, K1.

14. System (100) according to claim 10 to 12, wherein the receiving module (110) is designed to register the first measuring transducer (150) and the further measuring transducer (155), wherein the receiving module (110) is designed to transmit the trigger signal only to registered measuring transducers (150, 155), optionally wherein the registration comprises an authentication of the measuring transducer (150, 155).

15. A computer program product for carrying out a method (10) according to any one of claims 1-9, wherein the computer program product is executed on a computer.

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