DE102005051117A1 - Communication-interface for e.g. flow meter, has capacitance electrodes that are arranged at different positions of modules, such that coupling capacitor is formed between modules for data transmission, by adjacent arrangement of modules - Google Patents
Communication-interface for e.g. flow meter, has capacitance electrodes that are arranged at different positions of modules, such that coupling capacitor is formed between modules for data transmission, by adjacent arrangement of modules Download PDFInfo
- Publication number
- DE102005051117A1 DE102005051117A1 DE102005051117A DE102005051117A DE102005051117A1 DE 102005051117 A1 DE102005051117 A1 DE 102005051117A1 DE 102005051117 A DE102005051117 A DE 102005051117A DE 102005051117 A DE102005051117 A DE 102005051117A DE 102005051117 A1 DE102005051117 A1 DE 102005051117A1
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- Germany
- Prior art keywords
- modules
- capacitance electrodes
- interface according
- capacitance
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 239000003990 capacitor Substances 0.000 title claims abstract description 10
- 230000008878 coupling Effects 0.000 title abstract description 8
- 238000010168 coupling process Methods 0.000 title abstract description 8
- 238000005859 coupling reaction Methods 0.000 title abstract description 8
- 239000011888 foil Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000006223 plastic coating Substances 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 239000004922 lacquer Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/065—Indicating or recording devices with transmission devices, e.g. mechanical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/068—Indicating or recording devices with electrical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/22—Capacitive coupling
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Die Erfindung betrifft eine Kommunikations-Schnittstelle zum Datenaustausch zwischen zwei abgeschlossenen Modulen, z.B. einem Zählmodul und einem Auswertemodul bzw. Funkübertragungsmodul eines Durchflussmessers oder Wärmezählers.The The invention relates to a communication interface for data exchange between two closed modules, e.g. a counting module and an evaluation module or radio transmission module of a flow meter or heat meter.
Üblicherweise erfolgt ein Datenaustausch zwischen zwei Geräten über Kabelverbindungen oder drahtlos über Funkverbindungen, optische Koppelstrecken wie beispielsweise eine Infrarot-Schnittstelle, oder auch über Magnetfelder mit Hilfe entsprechender Koppelspulen. Derartige Schnittstellen sind jedoch noch relativ aufwendig hinsichtlich Aufbau und Stromverbrauch.Usually Data is exchanged between two devices via cable connections or wirelessly over Radio links, optical links such as a Infrared interface, or even using magnetic fields with help corresponding coupling coils. However, such interfaces are still relatively expensive in terms of construction and power consumption.
Die Aufgabe der Erfindung besteht daher in der Schaffung einer einfachen, preiswert realisierbaren und nur minimale Energie erfordernden Kommunikations-Schnittstelle zum Datenaustausch zwischen zwei abgeschlossenen Modulen.The The object of the invention is therefore to provide a simple, inexpensive realizable and minimal energy requiring communication interface for Data exchange between two completed modules.
Diese Aufgabe wird beim gattungsgemäßen Gegenstand dadurch gelöst, dass jedes Modul mit mindestens einer Kapazitätselektrode an einer solchen Stelle versehen ist, dass sie bei benachbarter Anordnung beider Module mit der Kapazitätselektrode des anderen Moduls einen Datenübertragungskondensator bildet. Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.These Task is the generic object solved by that each module with at least one capacitance electrode on one Place is provided that they are in adjacent arrangement of both Modules with the capacitance electrode the other module a data transfer capacitor forms. Further developments of the invention are characterized in the subclaims.
Die erfindungsgemäße Schnittstelle zeichnet sich durch einfache und kostengünstige Konstruktion sowie sichere Datenübertragung und äußerst geringen Energiebedarf aus, und insbesondere unterliegt sie praktisch kaum Einschränkungen bezüglich der Geometrie und des Materials der Module, da sich die Kapazitätselekt roden in beliebiger Form ausbilden und an beliebigen Stellen des Moduls anordnen lassen, so dass zwischen ihnen ein Koppelkondensator geringer Kapazität gebildet wird, über den sich ein Datenaustausch in Form von Impulsen einfach und sicher durchführen lässt.The inventive interface is characterized by simple and inexpensive construction as well as secure data transfer and extremely small Energy requirement, and in particular, it is hardly subject restrictions in terms of the geometry and material of the modules as the capacity factors are decreasing form in any form and anywhere on the module arrange so that between them a coupling capacitor lower capacity is formed over Data exchange in the form of impulses is simple and secure carry out leaves.
Die kapazitive Datenübertragung lässt sich wesentlich kostengünstiger realisieren als die bisher gebräuchlichen Schnittstellen, da keine zusätzlichen Bauteile wie Spulen, Leuchtdioden, etc. verwendet werden müssen.The capacitive data transmission can be essential cost-effective realize as the previously used Interfaces, because no additional components such as coils, light emitting diodes, etc. must be used.
Die benötigten Kondensatorflächen können beispielsweise direkt mit Kupferflächen auf einer vorhandenen Elektronikplatine hergestellt werden, und wenn die Gehäusegeometrie es erfordert, können auch kostengünstige Metallfolien, eine leitfähige Kunststoffbeschichtung, Leitlack oder ähnliches zum Einsatz kommen. Bei alledem ist die Geometrie dieser die Kondensatorbeläge darstellenden leitenden Flächen frei wählbar.The required capacitor surfaces for example directly with copper surfaces be made on an existing electronics board, and if the housing geometry it also requires, can inexpensive Metal foils, a conductive plastic coating, Conductive paint or similar be used. In all of this, the geometry of these is the capacitor pads representing conductive surfaces freely selectable.
Da im Betrieb nur sehr kleine Kapazitäten im Bereich von einigen pF umgeladen werden müssen, ist die erfindungsgemäße kapazitive Kommunikation im Vergleich etwa zu optischen oder magnetischen Bauelementen extrem Strom sparend. Dies ist insbesondere für batteriebetriebene Geräte von großem Vorteil.There in operation only very small capacities in the range of some pF must be reloaded the inventive capacitive Communication in comparison to optical or magnetic components extremely power-saving. This is particularly advantageous for battery powered devices.
Im Gegensatz zu Kabelverbindungen zwischen den beteiligten Geräten bedeutet der Verzicht auf Stecker oder Kontakte eine einfachere und kostengünstigere Konstruktion. Im Vergleich zu optischen Übertragungsstrecken, etwa Infrarot-Schnittstellen, lässt sich die Erfindung auch bei nicht transparenten Gehäusekunststoffen anwenden, ohne dass besondere Fenster vorgesehen werden müssen.in the Unlike cable connections between the participating devices means Doing without plugs or contacts a simpler and cheaper Construction. Compared to optical transmission links, such as infrared interfaces, can be apply the invention even with non-transparent housing plastics without special windows must be provided.
Die erfindungsgemäße kapazitive Kommunikation kann auch bidirektional benutzt werden und eignet sich damit für Halbduplex-Verfahren.The Capacitive according to the invention Communication can also be used bidirectionally and is suitable with it for Half-duplex method.
Sie lässt sich auch hervorragend mit dem IrDa-Protokoll betreiben, da bei diesem Übertragungsverfahren nur kurze Impulse, z. B. 1,8 μs, übertragen werden. Es muss also keine zusätzliche Software in Geräten implementiert werden, die bereits eine optische IrDa-Schnittstelle besitzen. Z. B. kann ein Wärmezähler mit optischer Schnittstelle für die Vor-Ort-Auslesung ohne weitere Bauteilekosten mit einer erfindungsgemäßen Kommunikationsschnittstelle zu einem Erweiterungsmodul (z. B. einem Funksender) aufgerüstet werden.she let yourself also operate excellently with the IrDa protocol, as in this transmission method only short pulses, z. B. 1.8 μs, transferred. So there is no need for extra Software in devices which already has an optical IrDA interface have. For example, a heat meter can be used with optical interface for the on-site readout without additional component costs with a communication interface according to the invention be upgraded to an expansion module (eg a radio transmitter).
Die vom Funksender zu sendenden Daten werden zyklisch über die kapazitive Kommunikations-Schnittstelle vom Wärmezähler zum Funksender übertragen. Hierbei kann dasselbe Protokoll wie für die optische Schnittstelle unverändert verwendet werden. Auch kann eine Halbduplex-Verbindung realisiert werden.The Data to be sent from the radio transmitter are cyclically transmitted over the transfer capacitive communication interface from the heat meter to the radio transmitter. Here, the same protocol as for the optical interface unchanged be used. Also, a half duplex connection can be realized become.
Die kostengünstige Bauweise der erfindungsgemäßen Kommunikationsschnittstelle erlaubt modulare Erweiterungen aller möglichen Geräte, bei denen Daten von oder zu einem Erweiterungsmodul übertragen werden müssen. Insbesondere ist dies für batteriebetriebene, kostensensitive Geräte von Vorteil. Solche Erweiterungsmodule können beispielsweise Funkmodule, Datenloggermodule, M-Bus-Module, usw., insbesondere für den Bereich der Durchflussmesser oder Wärmezähler sein.The inexpensive Construction of the communication interface according to the invention allows modular extensions of all possible devices where data from or transferred to an expansion module Need to become. In particular, this is for battery-operated, cost-sensitive devices advantageous. Such expansion modules may include, for example, radio modules, Datalogger modules, M-Bus modules, etc., especially for the range of flow meters or heat meters.
Bei einer kapazitiven Abtastung der Drehbewegungen des mechanischen Zählwerks eines Wasserzählers können diese Drehbewegungen von einem Funkmodul erfasst werden. Hierbei ist es möglich, ein und dasselbe Modul durch entsprechende Konfiguration vor Ort als Drehbewegungserfassungs-Funkmodul oder als Datenerfassungs-Funkmodul zu verwenden, ohne zusätzliche Hardware zu benötigen.In a capacitive sampling of Drehbe movements of the mechanical counter of a water meter, these rotational movements can be detected by a radio module. In this case, it is possible to use one and the same module locally by means of a corresponding configuration as rotary motion detection radio module or as data acquisition radio module, without the need for additional hardware.
Die Erfindung sei im Folgenden anhand der Darstellungen zweier Ausführungsbeispiele näher erläutert. Es zeigenThe Invention will be described below with reference to the representations of two embodiments explained in more detail. It demonstrate
Die
Zeichnungen zeigen ein erstes Modul
Das
zweite Modul
Die
beiden Kapazitätselektroden
Bei
der Ausführungsform
nach
Vorzugsweise
bildet man die einander entsprechenden Kapazitätselektroden, also die Signalelektroden
Mit der vorbeschriebenen Erfindung wird die Möglichkeit geschaffen, eine mit einfachen Mitteln zu realisierende, minimale Energie erfordernde und für bereits bestehende Systeme leicht anwendbare Kommunikationsschnittstelle zu schaffen. Ganz besonders eignet sich die erfindungsgemäße Kommunikationsschnittstelle für den Einsatz in Modulen der Durchflussmess- sowie Wärmemesstechnik. Die vorliegende Erfindung stellt daher einen ganz besonderen Beitrag auf dem einschlägigen Gebiet der Technik dar.With the above-described invention, the possibility is created, a to be realized with simple means, requiring minimal energy and for already existing systems easily applicable communication interface to accomplish. The communication interface according to the invention is very particularly suitable for the Use in modules of flow measurement and heat measuring technology. The present Invention therefore makes a very special contribution in the relevant field the technology.
- 11
- Modulmodule
- 22
- Modulmodule
- 33
- Mikroprozessormicroprocessor
- 44
- Batteriebattery
- 55
- Impulssignalepulse signals
- 66
- Kapazitätselektrodecapacitance electrode
- 77
- Gehäusecasing
- 88th
- Gehäusecasing
- 99
- Komparatorcomparator
- 1010
- Batteriebattery
- 1111
- Kapazitätselektrodecapacitance electrode
- 1212
- Spannungsteilervoltage divider
- 1313
- Ausgangsimpulseoutput pulses
- 1414
- Kapazitätselektrodecapacitance electrode
- 1515
- Kapazitätselektrodecapacitance electrode
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005051117A DE102005051117A1 (en) | 2005-10-24 | 2005-10-24 | Communication-interface for e.g. flow meter, has capacitance electrodes that are arranged at different positions of modules, such that coupling capacitor is formed between modules for data transmission, by adjacent arrangement of modules |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005051117A DE102005051117A1 (en) | 2005-10-24 | 2005-10-24 | Communication-interface for e.g. flow meter, has capacitance electrodes that are arranged at different positions of modules, such that coupling capacitor is formed between modules for data transmission, by adjacent arrangement of modules |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005051117A1 true DE102005051117A1 (en) | 2007-04-26 |
Family
ID=37905374
Family Applications (1)
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DE102005051117A Withdrawn DE102005051117A1 (en) | 2005-10-24 | 2005-10-24 | Communication-interface for e.g. flow meter, has capacitance electrodes that are arranged at different positions of modules, such that coupling capacitor is formed between modules for data transmission, by adjacent arrangement of modules |
Country Status (1)
Country | Link |
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DE (1) | DE102005051117A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010076027A1 (en) * | 2008-12-31 | 2010-07-08 | Elster Messtechnik Gmbh | Electronic counter board and volume counter for fluids having such a counter board |
EP2242223A1 (en) | 2009-04-14 | 2010-10-20 | Actaris SAS | Wireless bi-directional transmission of serial data signals between an electronic device and an energy meter |
CN103728903A (en) * | 2013-12-26 | 2014-04-16 | 华立仪表集团股份有限公司 | User terminal |
EP2629548A3 (en) * | 2012-02-16 | 2015-10-14 | EVVA Sicherheitstechnologie GmbH | Device for the recording and communication of measurement data |
DE102014010189A1 (en) * | 2014-07-10 | 2016-01-14 | Diehl Metering Gmbh | Counter device with arithmetic unit and volume generator, module and method for operating a counter device |
DE102020112992A1 (en) | 2020-05-13 | 2021-11-18 | Audi Aktiengesellschaft | Measuring device and motor vehicle |
DE102021128638A1 (en) | 2021-11-03 | 2023-05-04 | optiMEAS Measurement and Automation Systems GmbH | Adapter unit and method for coupling an evaluation unit to a data bus, as well as a system and vehicle with a corresponding adapter unit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29701164U1 (en) * | 1997-01-24 | 1997-03-20 | Lay, Peter, 71543 Wüstenrot | E-field coupler for the galvanically isolated transmission of electrical voltages |
US5847447A (en) * | 1996-07-09 | 1998-12-08 | Ambient Corporation | Capcitively coupled bi-directional data and power transmission system |
US6615023B1 (en) * | 2000-02-18 | 2003-09-02 | Cypak Ab | System for wireless, bi-directional transfer of electric signals |
DE4125143C5 (en) * | 1991-07-30 | 2004-07-01 | Ulrich Dr.-Ing. Schwan | Device for the contactless transmission of alternating signals |
-
2005
- 2005-10-24 DE DE102005051117A patent/DE102005051117A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4125143C5 (en) * | 1991-07-30 | 2004-07-01 | Ulrich Dr.-Ing. Schwan | Device for the contactless transmission of alternating signals |
US5847447A (en) * | 1996-07-09 | 1998-12-08 | Ambient Corporation | Capcitively coupled bi-directional data and power transmission system |
DE29701164U1 (en) * | 1997-01-24 | 1997-03-20 | Lay, Peter, 71543 Wüstenrot | E-field coupler for the galvanically isolated transmission of electrical voltages |
US6615023B1 (en) * | 2000-02-18 | 2003-09-02 | Cypak Ab | System for wireless, bi-directional transfer of electric signals |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010076027A1 (en) * | 2008-12-31 | 2010-07-08 | Elster Messtechnik Gmbh | Electronic counter board and volume counter for fluids having such a counter board |
EP2242223A1 (en) | 2009-04-14 | 2010-10-20 | Actaris SAS | Wireless bi-directional transmission of serial data signals between an electronic device and an energy meter |
WO2010118940A1 (en) | 2009-04-14 | 2010-10-21 | Itron France | Wireless two-way transmission of serial data signals between an electronic device and a power meter |
US8661176B2 (en) | 2009-04-14 | 2014-02-25 | Itron France | Wireless two-way transmission of serial data signals between an electronic device and a power meter |
EP2629548A3 (en) * | 2012-02-16 | 2015-10-14 | EVVA Sicherheitstechnologie GmbH | Device for the recording and communication of measurement data |
CN103728903A (en) * | 2013-12-26 | 2014-04-16 | 华立仪表集团股份有限公司 | User terminal |
DE102014010189A1 (en) * | 2014-07-10 | 2016-01-14 | Diehl Metering Gmbh | Counter device with arithmetic unit and volume generator, module and method for operating a counter device |
DE102014010189B4 (en) * | 2014-07-10 | 2019-03-28 | Diehl Metering Gmbh | Counter device with arithmetic unit and volume generator, module and method for operating a counter device |
DE102020112992A1 (en) | 2020-05-13 | 2021-11-18 | Audi Aktiengesellschaft | Measuring device and motor vehicle |
DE102021128638A1 (en) | 2021-11-03 | 2023-05-04 | optiMEAS Measurement and Automation Systems GmbH | Adapter unit and method for coupling an evaluation unit to a data bus, as well as a system and vehicle with a corresponding adapter unit |
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