Abstract:
In some aspects, a power supply system for a plasma application and/or an induction heating system includes at least two controllable power generators of different types. Each controllable power generator includes an associated identifier, and at least one operating unit for controlling at least one of the power generators, the operating unit includes an operating application to import the respective identifiers from the power generators that are connected to the operating application, and based on generator-specific configuration data that are stored for each power generator and the identifiers, the operating application constructs a graphic user interface on a display device of the operating unit.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims priority under 35 U.S.C. §119(a) to German Application No. 10 2010 048 809.7, filed on Oct. 20, 2010, the entire contents of which are hereby incorporated by reference. 
     TECHNICAL FIELD 
     The invention relates to plasma and induction heating power supply systems and to related methods. 
     BACKGROUND 
     Manufacturers of power generators for plasma applications and induction heating applications have in the past developed various types of power supply systems. For a large number of these power supply systems, various control systems have been developed that differ in terms of size, construction, user interface and functionality. This can be costly and complex for the user and the development of various control systems is linked with considerable development costs. 
     SUMMARY 
     In some aspects of the invention, a power supply system for a plasma application and/or an induction heating application includes at least two controllable power generators of different types, with which an identifier is associated respectively, and an operating unit for controlling at least one of the power generators. The operating unit has a display device on which a graphic user interface can be displayed, an input device for manipulating the graphic user interface, and an operating application which imports the identifier from power generators which are connected thereto. Based on generator-specific configuration data which are stored for the power generator and the identifier, the operating application constructs an appropriate graphic user interface on the display device. 
     It is possible to operate different controllable power generators with only one operating unit. If the operating application, due to the identifier associated with the power generator, identifies which generator is intended to be operated, it is possible based on the identifier to use the correct configuration data for that specific generator in order to construct the graphic user interface. The graphic user interface is substantially the same for all the power generators. There are only slight adaptations to the generator. For example, the maximum adjustable power can be 1 kW in the case of a 1 kW generator. With another type of generator, such as, a 3 kW generator, a maximum power of 3 kW may be adjusted accordingly. Power generators of various types can be generators that operate in various frequency ranges that have different nominal output power levels, that are used in a plasma application and/or in an induction heating application, and that are alternating current generators or direct current generators. This listing of various types of power generator is not intended to be a conclusive listing. 
     The configuration data of a power generator can be stored in the power generator itself or in the operating unit of the power supply system. The configuration data can be stored in the generator and be read by an operating unit after it has been connected. This has the advantage that the newest power generators, which are not yet known to a relatively old operating unit can also be controlled. Alternatively, the configuration data can be stored directly in the operating unit. This has the advantage that power generators that do not yet have the possibility of storing configuration data themselves can also be controlled by the operating unit. The configuration data can be stored in a plurality of configuration files. However, it is also possible to store all the configuration data of all power generators in a single configuration file. The data that belong to a power generator type can be stored in the configuration file. Due to the identifier, the operating unit or the operating application indicates which data from the configuration file should be accessed in order to be able to operate a selected power generator. 
     The configuration data can include generator-specific parameter data and/or visualization data. The parameter data can describe all known parameters for the corresponding power generator or a sub-quantity thereof. Visualization data can describe parameters to be visualized and the manner in which they are intended to be displayed on the graphic user interface. Only a sub-quantity of visualization data can also be described if there are static parameters that are consistent for each power generator and are also intended to be displayed in a consistent manner, such as, for example, current, voltage and power. The data or data files may be present in Extensible Markup Language (XML) or another description format. XML is a language for representing data that are structured in a hierarchical manner in the form of text data. 
     Language data that can be processed by the operating application can be stored in the operating unit. The language data can be stored for various languages in various files. For example, there can be a file for each language. However, several languages can also be grouped in a file and combined together. 
     In order to be able to operate many different power generators with one operating unit, it is advantageous for the graphic user interface to be dynamically constructed. It is thereby also possible to operate newer power generators with a relatively old operating unit because the necessary information (i.e., the configuration data) can be stored on the respective power generator and the graphic user interface can be generated using these data. 
     Templates generated in the operating application can be stored in the operating unit. These templates can be defined in order to allow a more specific graphic user interface for visualizing data or parameters. Parameters can then be associated with the masks in the visualization file. 
     It is also advantageous if there are multiple operating units that substantially have the same graphic user interface. The intuitive operability of the power generators is thereby facilitated. Operating units can include, for example, personal computers, notebook computers, a panel that is separate from the power generator, or an integrated panel. This listing is not intended to be definitive. Other embodiments, such as, for example, a touchpad or a Man-Machine Interface (MMI) can also be provided. 
     In addition to the power generators, system components that can be controlled by the operating unit and that each have an identifier can be provided. Consequently, it is also possible to operate additional system components with the same operating unit as the power generators. As system components, it is possible to use, for example, impedance matching units, a plasma chamber, and/or other machine components. 
     In another aspect of the invention, a method for controlling at least one power generator using an operating unit includes importing an identifier of at least one power generator, selecting and/or importing generator-specific configuration data in accordance with the identifiers imported, and constructing a graphic user interface on a display device of the operating unit in accordance with the configuration data by using an operating application which is installed on the operating unit. 
     It is first possible to import an identifier of a power generator. Using the identifier, it is then possible to import generator-specific configuration data. Alternatively, it is possible to first load configuration data (e.g., for a plurality of different generator types), subsequently to import an identifier and then to select the relevant configuration data for the power generator to be operated using the identifier. After the operating unit has been connected to the generator, the operating application can then construct a graphic user interface using configuration data (e.g., parameters and/or visualization data). Subsequently, language data can be used in order to provide the language information. 
     For configuration data of different power generators, it is possible to produce substantially the same graphic user interfaces. Graphic user interfaces that are substantially the same are intended to be understood to be those user interfaces which have the same appearance, so that substantially all power generator types can be operated with one graphic user interface which has the same appearance. However, the details may vary. 
     The user interface that is substantially the same can have a static region. The static region can be arranged at one or more peripheral regions of the user interface on a display device (e.g., a screen). It can be arranged for substantially all power generator types and system component types at the same location of the user interface and always have substantially the same dimensions with respect to the display device (i.e., the static region can always take up the same percentage surface-area of the user interface). The static region may illustrate superordinate information and control elements, which are present at the same time for all power generators or system components. Superordinate control elements can include an on/off switch, operating status selection (e.g., control/adjustment mode, diagnosis mode, software update), and/or language selection. Superordinate information can include type designation, identifier of the power generator, warnings, error statuses, operating status display, cooling water temperature, and/or connection status. 
     The user interface that is substantially the same can have a dynamic region. The dynamic region can be arranged at one or more peripheral regions of the operating interface on a display device, such as a video screen. It can be arranged at the same location for substantially all power generator types and system component types and have the same dimensions with respect to the display device (i.e., the dynamic region can occupy the same percentage surface-area of the user interface). In the portion of the graphic user interface associated with the dynamic region, the information relating to only one power generator can be displayed and the information relating to other power generators can be hidden. It is possible to provide tabs by which it is possible to select the power generator for which information is intended to be displayed. The dynamic region can have a predetermined grid in which values can be displayed and adjusted. Depending on the identifier of the power generator, the dynamic region can have a different number of displayed values and values to be adjusted. Views in the form of tabs can also be provided in the dynamic region for displaying various topics, such as, for example, initial variables, arc detection, or other properties of a power generator. 
     Comparable values (e.g., electric current, voltage, frequency, power, and other values) can be displayed at the same location in the case of different power generator types or provided for adjustment. 
     Control elements for changing between different views or information contents in the dynamic region may be provided in the static region of the user interfaces. The different views or information contents can include information relating to diagnosis, monitoring, control, configuration, and/or software updates. The selectable views or information contents provided can be the same for all power generator types. 
     The number of regions on the graphic user interface can be limited to a maximum of two (e.g., a static and a dynamic region) that are both always visible for the user. This improves the clarity and consequently the user-friendliness. 
     The slight deviations can be related to the generator type, but they can also be dependent on the type of operating unit. For example, slight differences may be necessary if a touchscreen is used as an operating unit as an input device for the operating unit instead of a mouse or keyboard. 
     Regardless of the number and type of connected power generators and system components, the same proportion of the surface-area of the user interface can be associated with the dynamic region and the same proportion on the surface-area of the user interface can be associated with the static region. Furthermore, the same shape and arrangement on the graphic user interface or the display device can be provided for the regions mentioned. 
     The configuration data can include generator-specific parameter data and/or visualization data. The parameter data include all or at least some of the parameters known for the power generator. The visualization data determine the structure of the graphic user interface. The parameters to be displayed are associated with various display elements, from which the operating application in the operating unit composes the graphic user interface. The operating unit can display static and dynamic contents. It is thus possible, for example, for a message region to be static because it is provided for each power generator. Conversely, operating information can be dynamic because it is produced in a generator-specific manner from the visualization data and the parameter data. 
     In some embodiments, language data can be read and information can be displayed on the display device in accordance with the language data. It is consequently possible to carry out adaptation to the specific user and the user&#39;s language skills. 
     As already mentioned above, it is typically advantageous for the graphic user interface to be constructed in a dynamic manner. 
     Templates that enable the graphic user interface to be adapted can be defined in the operating application. Visualization data can be associated with the templates. 
     For identical configuration data, it is possible to produce and display substantially identical graphic user interfaces in different operating units. Consequently, due to different operating units, such as operating units including a display, a mouse and a keyboard or operating units including a display with a touchpad, power generators can have substantially the same graphic user interface so that a user can operate the power generator, with little regard to the operating unit used, once the user has become familiar with only one operating unit. 
     Furthermore, the identifier and the configuration data of a controllable system component can be imported and taken into consideration when constructing the graphic user interface. The operating units can therefore also be used to operate and control other components of the power supply system such as, for example, an impedance matching unit. For these system components, no separate operating units are typically necessary. A single operating unit can be used in order to operate a plurality of generators and/or other system components at the same time. 
     The configuration data of a power generator can be stored in the power generator or in the operating unit and can have a time stamp or a priority identification number. The operating application can decide based on the time stamp or the priority identification number whether the configuration data stored in the power generator or the operating unit are used to construct the graphic user interface on the display device. In this manner, the most current configuration data can typically be used when constructing the graphic user interface. 
     With each power generator and also each controllable system component, there can be associated a software status and/or an integration level, which is interrogated by the operating application. The software status or integration level is taken into account when constructing the graphic user interface. A power generator type can differ by different software statuses. In addition to differing software statuses, statuses in the programmable logic (related to a complex programmable logic device (CPLD) and/or a field-programmable gate array (FPGA)) can also change. Furthermore, parameters stored in the device can change. These changes in the device can lead to different integration levels of the device type. For this reason, each generator typically has an integration level that describes the system status. This can be continuous numbering, which begins at one and increases with any software change of any component in the system. Numbering can start at one because zero can indicate an undefined status. The operating application, in addition to the identifier of the power generator, can also determine the integration level and construct the graphic user interface on the display device in accordance with the respective integration level. It is possible to proceed in a flexible manner in this instance. If the identifier of the operating application is known, but the integration level is not yet known, it is also possible to use an older integration level for constructing the graphic user interface. 
     In some aspects of the invention, a plasma system and/or an induction heating system includes a first group of different power generators and a second group of different operating units. An identifier is associated with each power generator type. Each operating unit of the second group is able to be coupled to each power generator of the first group in order to control the respective power generator, and is able to import the identifier of the coupled power generator. Each operating unit has an operating application by which there can be produced, regardless of the power generator coupled to the operating unit, a graphic user interface which has the same general appearance for all power generators but which is adapted to the coupled power generator(s). 
     Using the systems and methods described herein, it is possible to operate a product range of a manufacturer with different operating units, and the graphic user interface or the appearance of the graphic user interface is substantially identical for all operating units and all types of power generator. 
     The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other aspects, features, and advantages of the invention will be apparent from the description and drawings, and from the claims. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic illustration of a power supply system. 
         FIG. 2  is a schematic illustration of a power supply system. 
         FIG. 3  is an illustration of a graphic user interface. 
         FIGS. 4 and 5  show screen shots taken from the graphic user interface of  FIG. 3 . 
         FIG. 6  is a schematic illustration of the power supply system of  FIG. 1 . 
         FIG. 7  is an illustration of an exemplary visualization data file. 
         FIG. 8  is a flowchart of a method for operating power supply systems. 
         FIG. 9  is a flowchart of another example of a method for operating power supply systems. 
     
    
    
     DETAILED DESCRIPTION 
     A power supply system  100  shown in  FIG. 1  includes a power generator  10 . A power generator application  11  that can be influenced by an operating unit  12  runs in the power generator  10 . An identifier  13  is stored in the power generator  10 . Parameter data  14  and visualization data  15  are also stored in the power generator  10 . The parameter data  14  and visualization data  15  together constitute configuration data  16 . The visualization data  15  and parameter data  14  can also be combined in one file. 
     The operating unit  12  includes a display device  17  and an input device  18 , (e.g., a touchpad, a mouse, or a keyboard). The operating unit  12  imports the identifier  13  of the power generator  10 . The operating unit  12  further imports the configuration data  16 . Using the identifier  13  and the configuration data  16 , a graphic user interface is constructed on the display device  17  by an operating application  19  using language data  20  which are stored in the operating unit  12 . A user can input or change values using the input device  18  and the graphic user interface. Based on these inputs, the operating unit  12  can control the power generator  10 . The operating unit  12  is connected to the power generator  10  by a data connection  21  that is indicated by the double-headed arrow. Templates  22  can be produced on the operating unit  12 , which allows a specific user-defined interface for visualizing generator-specific data. The operating unit  12  can also be connected to another type of power generator  10  or another controllable system component of the power generator system  100  in terms of data-processing and be used to control it. 
       FIG. 2  illustrates another example of a power generator system  200 . The power generator system  100  includes a power generator  30  that has only one power generator application  31  and one identifier  33 . Parameter data  34  and visualization data  35 , which are collectively the configuration data  36 , are stored in an operating unit  32 . The configuration data  36  can also include data of other power generators or controllable system components. 
     Using the identifier  33  that is imported by the operating unit  32 , the appropriate configuration data for the power generator  30  can be selected. Using the configuration data  36  and language data  40 , it is possible for an operating application  39  to construct a graphic user interface which is displayed on the display device  37 . The graphic user interface  37  can be influenced by a user using the input device  38  (e.g., a touchpad, a mouse or a keyboard). It is also possible to generate templates  42  in this instance. 
     The power generator  30  can be controlled via the operating unit  32  by a data connection  41 . 
     Still referring to  FIG. 2 , the power supply system  200  includes a controllable system component  60  (e.g., an impedance matching unit). The system component  60  has a system component application  61  and an identifier  62 . The identifier  62  can be imported from the operating unit  32  via the data connection  63 . Configuration data  36  that belong to the system component  60  can be determined using the identifier  62 . The graphic user interface displayed on the display device  37  can be modified in such a manner that the data relating to the system component  60  can also be manipulated. Consequently, the system component  60  can also be controlled by the operating unit  32 . In addition to the identifier  32 , the power generator  30  can also have an integration level  64  which can be imported from the operating unit  32 . The system component  60  can also have an integration level  65  in addition to the identifier  62 . It is thereby possible to select the configuration data  36  that best reflect the system status of the power generator  30  or the system component  60 . The data connections  21  and  41  are an integral component of a network. 
     The graphic user interface  70  shown in  FIG. 3  has a static region  77  and a dynamic region  74 . The dynamic region  74  has a plurality of tabs  76 , by which the user can select the desired display. The dynamic region  74  can include a scrolling bar  75 . The static region  77  has primary information and control elements  73 . Superordinate information to be displayed can be, for example, a status message region  71  and a warning and/or error message region  72 . 
       FIGS. 4 and 5  are screen shots of different examples of the graphic user interface  70 . Control elements  73  are provided to control the different power generators  30  and controllable system component  60  using the graphic user interface  70 . By selecting different control elements  73  (e.g., Operation, Configuration, Diagnostics, Data logging, and other elements), the dynamic region  74  can include different type of information that can be selected using multiple tabs  76 . When the Data logging control element  73  is selected, as shown in  FIG. 4 , one set of tabs  76  (e.g., Data logger, Oscilloscope, and Configuration) can be displayed in the dynamic region  74 . Similarly, when the Operation control element  73  is selected, as shown in  FIG. 5 , a different set of tabs  76  (e.g., Power regulation, Clock and pulse mode, and Regulation characteristic) can be displayed in the dynamic region  74 . 
       FIG. 6  shows an example layout of the power supply system  100  of  FIG. 1 . As shown, the power supply system includes several different operating units, for example, a personal computer  12 , a laptop  12   a , or a touchpad operating unit  12   b  (e.g., a smart phone, a tablet personal computer, or similar device). The operating units  12 - 12   b  can be used individually or together in a network. The operating units  12 - 12   b  can be connected to a power generator  10  by a wired data connection  21  or by a wireless data connection  21   a.    
     Input devices  18  of the respective operating units  12 - 12   b  can be a touchpad  18   a  in connection with the display device  17 , a mouse  18   b , a keyboard  18   c , or a similar device. During setup and operation of the power supply system  100 , the operating unit  12  imports an identifier  13  of the power generator  10 . 
       FIG. 7  shows an illustration of an example visualization file  15  that is in an XML file format. A parameter file  14  and an identifier file  13  can be in the same format or in other formats which allows for easier configurable data analysis. 
       FIG. 8  shows a flow chart of a method  80   a  of operating a power supply system  100 . The operating unit first asks the power generator for the identifier (step  81 ). In response, the power generator sends the identifier  13  to the operating unit (step  82 ). The operating unit then imports the identifier  13  and stores it in a memory  88  (step  83 ). The operating unit then asks the power generator for the configuration data (step  84 ). The configuration data can be the generator-specific configuration data based on the identifier. The configuration data can include two data files, a file of parameter data  14  and a file of visualization data  15 . The power generator then sends the configuration data to the operating unit (step  85 ). The operating unit imports the configuration data and stores it in a memory  88  (step  86 ). The operating unit then constructs the graphical user interface (step  87 ). The user can now control the power generator with the use of the graphical user interface (step  87 ). 
       FIG. 9  shows a flow chart of an alternative method  80   b  of operating a power supply system  100 . The method shown in  FIG. 9  is similar to the method shown in  FIG. 8 , however, as shown the operating unit selects the configuration data from its own data base instead of obtaining the configuration data from the power generator. This is achieved by using generator-specific configuration data based on the identifier. 
     A number of embodiments of the invention have been described. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention. Accordingly, other embodiments are within the scope of the following claims.