Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/16—Constructional details or arrangements
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/16—Constructional details or arrangements
  • G06F1/18—Packaging or power distribution
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/26—Power supply means, e.g. regulation thereof

Definitions

• the invention relates to a device component for a elektri ⁇ cal field device.
• Electric field devices are used, for example, in the automation of power distribution systems, where they are used, for example. are used as electrical protection devices, power quality devices or electrical control devices. Further, electric field devices e.g. also used in the fields of automated control and regulation of procedural processes and industrial automation.
• electric field devices consist of several individual device components such as control modules, input and output modules for transmitting and receiving data and converter modules for transforming measuring currents and voltages.
• control modules input and output modules for transmitting and receiving data and converter modules for transforming measuring currents and voltages.
• distance protection 7SA6, V4.3 ⁇ order no . C53000-G1100-C156-3 is spielmik from the section "Introduction overall function", pages 2 to 4 ⁇ .
• a digital distance protection device as field devices advises known, inter alia, an input amplifier group, an analog-to-digital converter group and a control module in the form of a microcomputer system.
• the control module contains a memory module in which a software for controlling the device functions of the field device, the so-called firmware, is stored. Furthermore, this memory module can also store data for the parameterization of device functions of the electric field rätes, measured values and, for example, current andor ⁇ runs during an accident in the power grid ent keep. If the control module fails, for example due to a defect in the microprocessor, then this stored data is usually irretrievably lost or can only be restored with great effort. Normally, they must be reentered if the corresponding device component is replaced - if available. This means that once again a device firmware must be loaded and the corresponding parameter settings made.
• the object of the invention is to improve a device component of an electric field device such that a comparatively cost-effective replacement is possible even in the case of a defect in the device component.
• a device component for an electric field device which has a data interface with which a memory module can be contacted without soldering.
• a solderless contacting is to be understood at this point as those electrical connections in which - without having to make a soldering - a contact between the data interface and the memory module can be made. In this way, the memory module (without soldering, so solderless) from the ⁇ interface can be removed.
• the invention is based on the finding that a defect in a device component only occurs in very rare cases with regard to its data memory, so that it normally continues to function in the normal case.
• the memory module which is still intact, can be easily removed from the device component. standards and in an exchange device component used, for example, inserted. In this way, a replacement of a defective device component not only take place without data loss for the electric field device, but also cost.
• An embodiment of the device component according to the invention provides that a memory module is contacted with the data interface.
• the memory module has a voltage source for buffering the data stored thereon.
• a loss of data can be ensured even in the case of such memory modules of the memory module which require an electrical power supply for data storage.
• the memory module has a non-volatile memory module.
• a so-called flash memory may be provided as the non-volatile memory module.
• Such flash memories are widely known, for example in the form of digital memory cards from the field of digital photography and can be obtained at comparatively low cost.
• the device component has at least one memory controller for controlling the memory module. Furthermore, it is considered advantageous with respect to the device component according to the invention if the device component also has a permanently installed memory element in addition to the removable memory module. In this case, for example, all measured values arising during operation can first be stored on the permanently installed memory element which, for example, allows fast access time. At regular intervals, an image of the data content of the permanently installed memory element can then be transferred to the removable memory module, thus producing a backup copy.
• the removable memory module can also be a memory module which has a slower access time than the permanently installed memory element and would therefore not be suitable for rapid storage, for example of accident data. Furthermore, it can be provided that only certain essential data is transmitted from the permanently installed memory element to the removable memory module. Less essential data in which a loss had less effect could in this case remain on the fixed storage element.
• the removable memory module can be designed with a smaller memory capacity than the permanently installed memory element and thus generates lower costs for the purchase.
• the device component has a voltage monitoring unit. Having direction for monitoring anlie ⁇ on the device component lowing supply voltage.
• a warning signal can be given by means of the voltage monitoring device if a power failure of the device component threatens, so that a backup copy of the data of the permanently installed memory element on the removable memory module can be generated in good time.
• the removable memory module has two memory modules with different access time.
• those data which have to be stored in a relatively large amount in a relatively short time for example, accident data which accumulates in large quantities within a few seconds - can be stored on a memory module with a short access time
• the device component is a control device of the field device.
• parameterization data, the device firmware and operating data (counter values, fault records) of the electrical device are stored in the removable memory module.
• the device component according to the invention may, for example, also be a current or voltage converter module of the field device.
• calibration data and identification data of the corresponding current or voltage converter module can be stored on the removable memory module.
• the device component has a
• Input / output modules of field devices are used for digital or analogue transmission and reception of measured values, messages or alarms via communication lines to or from other field devices or evaluation devices, in this case the data contained in the removable memory module can be used For example, to act identification data of the corresponding input / output module and parameter values for the respective communication inputs and outputs.
• the above-mentioned object is also achieved by a method for producing a back-up copy of data relating to a device component of an electrical field device, wherein the device component is a volatile, permanently installed memory element and a removable, non-volatile one
• Memory module has and wherein the following steps ist ⁇ out: A voltage applied to the device component Ver ⁇ supply voltage is monitored for a power failure and it is a warning signal generated in case of power failure of the supply voltage. In the case of the present warning signal, then those copied on the volatile, permanently installed one are copied onto the non-volatile, removable memory module. In this case, consequently, in the event of a voltage failure the device component automatically creates a backup copy of the data stored on the permanently installed memory element.
• Figure 1 shows schematically an embodiment of a
• FIG. 2 schematically shows a further embodiment of a device component of an electric field device with a removable memory module
• Figure 3 is a three-dimensional view of a field device and in
• Figure 4 is a three-dimensional view of a
• a device component 1 of an electric field device has an interface 2, via which a memory module 3 can be contacted so as to be detachable from the device component 1 without soldering.
• the device component 1 is connected in a manner not shown in Figure 1, for example via a data bus to the electric field device and performs certain functions of the electric field device true.
• the removable memory module 3 has a first memory module 4 and a second memory module 5, which can each be controlled by corresponding memory controllers 4a and 5a. Instead of the device component 1, the memory controller 4a and 5a on the memory module. 3 be arranged by yourself.
• the memory module 3 has a power supply in the form of a battery 6, which is electrically connected to the second memory module 5.
• the device component 1 can access the memory modules 4 and 5 of the memory module 3 via the interface 2 and the memory controllers 4a or 5a and store data there or read in from these data.
• the data present in the memory modules 4 and 5 can be, for example, a firmware of the device component 1, parameters for configuring the functions of the device component 1 or operating data generated by the device component during operation of the field device. If the device component 1 is, for example, a control component of the electric field device, operating data can be, for example, measured values recorded during an accident (so-called disturbance records).
• a solderless removable memory module 3 generally has the advantage that the data required for the operation of the device component 1 or generated during the operation of the device component 1 is not lost in the event of a defect in the device component. If, for example, there is a defect in the device component 1, then the removable memory module 3 can be removed from the interface 2 of the device component 1 in a simple manner and inserted into a corresponding interface of an exchange device component. The new device component can then be operated in the shortest possible time without the need for new settings. In this way both costs and labor, for example for the parameterization of the Aus ⁇ exchange device component, avoided as well as the standstill time of the field device during the replacement of a defective device component reduced.
• the memory module 4 shown in FIG. 1 may be, for example, a memory module having a relatively slow access time. This memory module will then be used, for example, to store data which is changed comparatively rarely and in which the speed of reading and writing processes does not play a decisive role.
• data may be the firmware of the device component 1 or parameters for the device component 1.
• the memory module 3 has the further memory module 5, which is set up for a faster access time than the memory module 4. Since memory modules with faster access times usually mean higher acquisition costs compared to memory modules with slow access times, the memory capacity becomes The comparatively faster memory module can not be made unnecessarily large in order to keep the memory modules 3 comparatively low overall. Therefore, it makes sense to use a slower for non-time critical data in addition to the fast memory module.
• a memory module with a comparatively slow access time for example, a flash memory can be considered, while a memory module with fast access time is, for example, a battery-buffered RAM module.
• a memory module with fast access time is, for example, a battery-buffered RAM module.
• more than two memory modules can also be present on the memory module 3, wherein the individual memory modules are adapted to the respective data to be stored with regard to the required access time and frequency of scanning.
• the number of memory modules used for the memory module 3 is to be optimized in each case with regard to the respective application case and the costs to be expended.
• the memory modules 4 and 5 may be non-volatile memory modules, that is to say the memory modules still have the stored data even after any storage time of any length without power or voltage supply. However, it can also be provided to use at least partially such memory modules which require a power supply in order to preserve the data stored on them. In such a case, a voltage supply, for example in the form of a battery 6, which is connected to the respective memory modules 4 and 5, is to be provided on the memory module 3.
• a voltage supply for example in the form of a battery 6, which is connected to the respective memory modules 4 and 5, is to be provided on the memory module 3.
• the stored data can be buffered over a long time in volatile memory. As shown in FIG. 1, only one of the memory modules, here the memory module 5, can be buffered by means of the voltage source, while the other memory module is a non-volatile memory module.
• the device component 1 can - as shown in Figure 2 - also have a fixed memory element 7.
• all operating data generated during operation can first be stored on the permanently installed memory element 7 and at regular intervals be stored on a memory module 4 of the removable memory module 3 as a backup copy of the data content of the permanently installed memory element 7.
• a memory device 4 with a slow access time to make the backup copy is sufficient. If the intervals in which a backup copy is made are chosen to be relatively short, for example at a 10-minute interval, the risk of loss of important data is correspondingly minimized.
• a voltage monitoring device 8 may be provided on the device component 1, which outputs a warning signal W, if a failure of the supply voltage for the device component 1 - and thus for the memory module 7 -. threatening.
• a failure of the supply voltage can already be detected in good time, for example, if, after a failure of the supply voltage of the device component 1, this voltage is buffered by a voltage buffer 9, eg a correspondingly dimensioned capacitor, arranged upstream of the voltage supply input of the device component 1 While can be maintained.
• the voltage monitoring device 8 monitors in this case the lines of the supply voltage in front of the voltage buffer 9 and generates the warning signal W if there is a power interruption.
• FIG. 3 is a schematic representation of a field device 10 in a three-dimensional view, partially in section.
• the field device 10 has a Wegsemantel Il and a front panel 12 with controls, such as a shown in Figure 3 from its back panel 13 on.
• a rear wall of the field device 10 is not shown because of its broken view in Figure 3.
• the device component l ⁇ r represents, for example, a control unit of the electric field device 10.
• the printed circuit board inserts are held in insertion strips 26.
• the device component 16 has, for example, a computing module 17, various electronic components 18 (indicated only schematically on the device component 16), switching relays 19 and plug-in connectors 20 for connecting further device components of the electric field device. Additional connectors 21 can be used to connect external connections to the device component.
• the device component 16 also has an interface 22 into which a solderless removable memory module 23, for example in the form of a memory card, is inserted. Furthermore, the device component 16 also has a permanently installed (for example soldered in) memory element 24.
• the mode of operation of the memory module 23 and of the memory element 24 corresponds to the mode of operation described with regard to FIGS. 1 and 2 and will therefore not be explained again here.
• an opening 25 can be provided in the housing jacket 11. be seen, through which the memory module 23 can be easily entnom ⁇ men.
• the opening 25 is shown partially in dashed lines in FIG. It can be seen vor ⁇ with appropriate arrangement of the memory module 23 on the device component 16 in the front panel 12 or the rear wall of the field device 10.
• FIG. 4 shows a further device component, which is a current transformer module 30 for an electric field device.
• the current transformer module 30 has in its interior (not shown in FIG. 4) current transformers, for example in the form of inductive current transformers, which can be contacted on the input side via screw terminals 31.
• the current transformer outputs can be led out of the current transformer module 30 via cable lines 32, for example.
• the cable lines 32 are combined in a flat plug 33 and in this way can be easily connected to corresponding terminals of other device components of the electric field device.
• the current transformer module 30 also has an interface 34 into which a solderless removable memory module 35 is inserted.
• calibration data for the current transformer contained in the current transformer module 30 can be present on this memory module 35, so that a corresponding conversion of the input currents can take place directly on the basis of the calibration data.
• identification data of the converter module 30 can be stored on the memory card, which makes possible a simple identification of the converter module in the electric field device. If the converter module 30 has to be replaced because of a defect, then the removable memory module 35 can be easily replaced by an exchange converter module. be connected without loss of, for example, the calibration data occurs.

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• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Human Computer Interaction (AREA)
• Power Engineering (AREA)
• Techniques For Improving Reliability Of Storages (AREA)

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Citations (4)

Family Cites Families (2)

• 2004
  • 2004-07-29 DE DE200410037526 patent/DE102004037526A1/de not_active Withdrawn
• 2005
  • 2005-07-19 EP EP05776201A patent/EP1782162A1/de not_active Withdrawn
  • 2005-07-19 CN CNA2005800255334A patent/CN1993668A/zh active Pending
  • 2005-07-19 WO PCT/EP2005/053475 patent/WO2006013155A1/de active Application Filing

Patent Citations (4)

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