WO2003096139A2 - Cable de connexion sans contact - Google Patents

Cable de connexion sans contact Download PDF

Info

Publication number
WO2003096139A2
WO2003096139A2 PCT/EP2003/004779 EP0304779W WO03096139A2 WO 2003096139 A2 WO2003096139 A2 WO 2003096139A2 EP 0304779 W EP0304779 W EP 0304779W WO 03096139 A2 WO03096139 A2 WO 03096139A2
Authority
WO
WIPO (PCT)
Prior art keywords
interface
data
signal
connection cable
cable
Prior art date
Application number
PCT/EP2003/004779
Other languages
German (de)
English (en)
Other versions
WO2003096139A3 (fr
Inventor
Martin Gehrke
Torsten Pechstein
Hermann Straub
Original Assignee
Endress + Hauser Conducta Gmbh+Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Endress + Hauser Conducta Gmbh+Co. Kg filed Critical Endress + Hauser Conducta Gmbh+Co. Kg
Priority to AU2003227730A priority Critical patent/AU2003227730A1/en
Publication of WO2003096139A2 publication Critical patent/WO2003096139A2/fr
Publication of WO2003096139A3 publication Critical patent/WO2003096139A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H01F2038/143—Inductive couplings for signals

Definitions

  • the present invention relates to a connection cable for connecting two electrical or electronic devices or modules, in particular between sensors and transmitters for the transmission of data or of data and energy.
  • Known connecting cables between sensors and transmitters have connection options for contacting the sensor and the transmitter on both sides of the cable.
  • the contact is made galvanically, for example through sockets with complementary plugs, with the formation of metallic contacts.
  • the galvanic contacts described are disadvantageous insofar as the contact resistance of the galvanic contact can be changed or can be completely interrupted due to a change in the contact surfaces, contamination or oxidation or contact corrosion. A reliable measurement by evaluating the measurement signal and / or a reliable supply of the at least one sensor with electrical energy is thereby impaired or even impossible.
  • the present invention is therefore based on the object of providing a connecting cable and a device arrangement with a connecting cable which overcomes the disadvantages described.
  • the object is achieved by the connecting cable according to independent claim 1 and the device arrangement according to independent claim 13.
  • the connecting cable according to the invention for the exchange of data between a first device and a second device and for the transmission of energy from the first device to the second device comprises a first interface for releasable connection to the first device, a second interface for releasable connection to the second device, and a connecting line for the transmission of Data and energy between the first and second interfaces; wherein the first and the second interface are such that the exchange of data between the first device and the first interface and the second device and the second interface takes place without galvanic coupling, and the transmission of energy from the first device to the first interface and from the second interface to the second device takes place inductively.
  • the connecting cable is used in particular for connecting a sensor to a higher-level unit, in particular a measuring transducer or a control system, the energy supply for the sensor being provided by the higher-level unit via the connecting cable.
  • the connecting cable according to the invention is used in particular for connecting pH, redox, temperature, turbidity, chloride, oxygen, conductivity, pressure, flow and level sensors to a higher-level unit.
  • the first or second device can also be a connecting cable, so that the connecting cable serves as an extension cable.
  • the first and the second interface are designed in particular for optical, or inductive, data transmission in particular, while the energy transmission takes place inductively.
  • the connecting cable can have at least one light guide, which extends between the first and the second interface and comprises an aperture or end face at both interfaces for coupling or uncoupling a light signal.
  • the light signal is transmitted from the connection cable without conversion.
  • the interfaces can each have an optocoupler, which optically couples data between an interface and the connected electrical device, an optical signal received, for example, by the optocoupler of the first interface being converted into an electrical signal which is electrically the optocoupler of the second interface is transmitted in order to be converted back into an optical signal.
  • the Energy for operating the optocouplers is provided by the first device connected to the first interface via the first interfaces.
  • the inductive transmission of the data is particularly preferred, for which purpose it can be modulated as a digital signal onto an AC signal for inductive energy transmission. It is useful to differentiate here whether the data should be transmitted in the direction of energy transmission or vice versa.
  • data is transmitted inductively in the direction of energy transmission, it is actively modulated onto the AC signal.
  • the data transmission in the opposite direction is preferably carried out by load modulation.
  • the first and second interfaces each have a suitable converter, which superimposes digital data to be decoupled on the AC signal depending on the direction of transmission based on the energy flow through active modulation or load modulation.
  • the converters are equally suitable for demodulating signals coupled into the respective interface.
  • a currently particularly preferred embodiment has interfaces with converters which convert an injected AC signal with a modulated digital data signal into a DC signal for energy transmission and a symmetrical data signal.
  • the direct current signal and the symmetrical data signal are preferably transmitted between the first and the second data line via a four-wire cable.
  • any arrangements of the coupling or decoupling elements are conceivable for the inductive transmission of energy and data.
  • coaxially arranged coils are suitable and, on the other hand, toroidal core segments which form a closed toroidal core with the complementary coupling element.
  • the first interface or the second interface of the connecting cable has a first coupling element with a first part of a ferrite core transformer and the device to be connected in each case has a second coupling element with a second part of the ferrite core transformer.
  • the first and the second interface preferably have interface housings with suitable mechanical coupling elements with which they connect complementary complementary elements of the first or second device can be connected.
  • the mechanical coupling elements preferably have coupling elements of a plug connector, that is to say at least one plug element, and / or at least one socket for receiving a plug element.
  • interface housings with largely planar end faces are also suitable, the mechanical fastening being able to be carried out, for example, by means of a union nut which engages with a complementary thread.
  • the first or the second interface is positioned appropriately to the complementary interface of the respectively connected device. This is preferably ensured by the coupling means and, if appropriate, by optional guide elements such as cutouts and complementary projections which come into engagement with one another when the interfaces are connected to the complementary interfaces of the respective devices.
  • the interface housings are preferably such that they hermetically seal the interface electronics from the environment, so that no liquid or gas can penetrate into the interface electronics.
  • the interface housings are preferably made of a material that can withstand the conditions to be expected at the respective place of use. This includes, for example, media resistance and temperature resistance.
  • the connecting cable according to the invention ensures reliable double electrical isolation between the connected devices and is explosion-proof.
  • FIG. 1 shows a block diagram of the interfaces of a device arrangement according to the invention with a connecting cable which connects a sensor to a transmitter;
  • FIG. 2a shows a schematic illustration of a connecting cable according to the invention, the interfaces of which have cylindrical coupling elements;
  • Fig. 2b is a schematic representation of a connecting cable, the interfaces of which have toroidal core segments as coupling elements.
  • a connecting cable according to the invention of a whole is designated by the reference number 1.
  • the connecting cable 1 is for connecting a sensor 2, for example a process measurement sensor for measuring the pH value, the pressure, the temperature, the turbidity, the chloride content, the oxygen content or the conductivity of a medium, with a transmitter or transmitter 3 a first interface 11 to the sensor 2 and connected to the transmitter 3 with a second interface.
  • the transmitter 3 comprises a converter 31, which converts energy and data of an internal RS485 interface into an AC signal.
  • the RS485 interface has four poles, with two poles serving as a direct current source and two poles providing digital signals that are represented by the differential voltage between the two poles.
  • the converter 31 converts the direct current signal into an alternating current signal, to which the digital data signal is modulated, for example by amplitude modulation (ASK according to the English amplitude shift keying).
  • the alternating current signal is inductively coupled out via a suitable cable-side coupling element, for example a cylindrical coupling element with a ferrite core.
  • the connecting cable has at its transmitter-side interface a complementary coupling element on the transmitter side, which inductively couples the decoupled signal, the coupling elements being galvanically isolated from one another.
  • connection cable has a converter 12 in its transmitter-side interface, which demodulates the AC voltage signal and provides a DC voltage signal and a digital signal on an internal RS-485 interface.
  • the DC voltage signal and the digital signal are transmitted via a four-wire connection line to the sensor-side interface of the connection cable, which comprises a converter 11, which converts the DC voltage energy received via the connection line into an AC signal, to which the digital data signal is modulated, for example by amplitude modulation (ASK).
  • ASK amplitude modulation
  • the AC signal is inductively coupled out via a suitable sensor-side coupling element.
  • the sensor 2 has a complementary cable-side coupling element which inductively couples the decoupled signal.
  • the senor 2 further comprises a converter 22 which demodulates the AC voltage signal and provides a DC voltage signal and a digital signal on an internal RS-485 interface.
  • the energy supply to the converters of the connecting cable and the sensor 2 is ensured in each case via the demodulated DC voltage signal.
  • the digital signals transmitted to the sensor are used to transmit commands and data to the sensor in a known manner.
  • the sensor 2 further comprises a converter 21, which converts analog primary signals from an elementary sensor into digital signals to detect a measured variable.
  • the signal transmission from the sensor 2 to the transmitter 3 takes place against the direction of the energy flow by means of a load modulation, amplitude modulation (ASK) of the alternating current signal at the cable-side interface of the sensor 2 and the transmitter-side interface of the Connecting cable.
  • ASK amplitude modulation
  • Complementary demodulation takes place in the sensor-side interface of the connecting cable 1 and in the cable-side interface of the transmitter 3.
  • the transmitter 3 processes the signals transmitted by the sensor or external commands in a known manner.
  • An optional data exchange between the transmitter and a control system can take place, for example, via the HART standard, according to the Fieldbus or the Profibus protocol.
  • the first and the second interface at the ends of the connecting cable are each arranged in a hermetically sealed interface housing.
  • the ends of the sheathing of the connecting line between the interfaces are preferably hermetically sealed to the respective interface housing.
  • the degree of tightness is to be adapted to the respective requirement. In most applications, protection against spray wetting is sufficient, so that in these cases there are no special requirements with regard to the compressive strength of any joints that may be present on the interface housings or between the interface housings and the connecting line. However, if static or dynamic pressurization is to be expected in special applications, pressure resistance must be guaranteed.
  • the interface housings have an insulating material at least in the area of the coupling elements.
  • the interface housings are designed in such a way that they can be suitably positioned with respect to the complementary coupling elements.
  • one of the interfaces 13 has a plug 15, in which a cylindrical coil with a ferrite core is arranged, and the other interface has a complementary socket 16, which is of a cylindrical Coil is surrounded.
  • the electrical devices to be connected each have suitable complementary sockets 23 or plugs 33.
  • the arrangement described ensures that the connecting cable is always connected in the same orientation between the first and the second device. This is important insofar as the energy supply to the converter can only take place via the first interface 14.
  • connection cable interfaces can be clearly assigned to the respective device, for example, by different patterns or symmetries of protrusions and recesses at the interfaces.
  • connection cable described and the device arrangement solve the task in that an energy supply and data exchange between two electrical devices can now take place without endangering the electrical contacts due to corrosion. In addition, there is no longer any danger of sparking when the connecting cable is disconnected from the connected devices, so that the connecting cable is suitable for explosion-protected applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

L'invention concerne un câble de connexion (1) permettant d'échanger des données entre un premier appareil (3) et un deuxième appareil (2) et de transmettre de l'énergie du premier appareil (3) vers le deuxième appareil (2). Ce câble de connexion (1) comprend : une première interface destinée à être raccordée de manière libérable au premier appareil (3) ; une deuxième interface destinée à être raccordée de manière libérable au deuxième appareil (2) ; ainsi qu'une ligne de connexion servant à transmettre des données et de l'énergie entre la première et la deuxième interface. Cette première et cette deuxième interface sont conçues de façon que l'échange de données entre le premier appareil et la première interface et entre le deuxième appareil et la deuxième interface intervienne sans couplage galvanique. En outre, la transmission d'énergie du premier appareil vers la première interface et de la deuxième interface vers le deuxième appareil se fait par induction. De préférence, l'échange de données se fait également par induction, par modulation du signal de courant alternatif utilisé pour la transmission d'énergie.
PCT/EP2003/004779 2002-05-07 2003-05-07 Cable de connexion sans contact WO2003096139A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227730A AU2003227730A1 (en) 2002-05-07 2003-05-07 Connecting cable for contactless data and power transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10220450.0 2002-05-07
DE2002120450 DE10220450A1 (de) 2002-05-07 2002-05-07 Kontaktloses Verbindungskabel

Publications (2)

Publication Number Publication Date
WO2003096139A2 true WO2003096139A2 (fr) 2003-11-20
WO2003096139A3 WO2003096139A3 (fr) 2004-02-19

Family

ID=29265132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/004779 WO2003096139A2 (fr) 2002-05-07 2003-05-07 Cable de connexion sans contact

Country Status (3)

Country Link
AU (1) AU2003227730A1 (fr)
DE (1) DE10220450A1 (fr)
WO (1) WO2003096139A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004086030A1 (fr) * 2003-03-26 2004-10-07 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh + Co. Kg Module de detection de gaz equipe d'une interface sans contact
WO2007048511A2 (fr) * 2005-10-28 2007-05-03 Sew-Eurodrive Gmbh & Co. Kg Appareil destiné à recevoir un module pour transmettre de l'énergie et/ou des données sans contact
WO2008077737A1 (fr) * 2006-12-22 2008-07-03 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh+Co. Kg Coupleur de connexion enfichable pour un module de détection et module de détection équipé d'un tel coupleur de connexion enfichable
WO2009050087A2 (fr) * 2007-10-10 2009-04-23 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh+Co. Kg Circuit de câble à conditionnement de signaux numérique
EP2805477A4 (fr) * 2012-01-19 2015-10-14 Rosemount Inc Composant périphérique de capteur prêt à l'emploi pour une instrumentation de procédé
US9762290B2 (en) 2012-12-13 2017-09-12 Endress+Hauser Conducta Gmbh+Co. Kg Plug connecting unit for connecting a cable circuit with a sensor module

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007598A1 (de) * 2005-02-18 2006-08-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bekleidungsstück
DE102005027047A1 (de) * 2005-06-10 2006-12-14 Endress + Hauser Wetzer Gmbh + Co. Kg Messumformerspeisegerät für die Prozessautomatisierungstechnik
DE102008043297B4 (de) 2008-10-29 2023-03-30 Endress+Hauser Conducta Gmbh+Co. Kg Schnittstellenneutrales Funktionsmodul für ein modulares Messgerät und modulares Messgerät mit einem schnittstellenneutralen Funktionsmodul
DE102008053920A1 (de) * 2008-10-30 2010-05-06 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verteilermodul bzw. damit gebildetes Messsystem
DE102009002009A1 (de) 2009-03-31 2010-10-07 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Reduzierung bzw. Minimierung von Störsignalen bei einem Feldgerät der Prozessautomatisierung
DE202010010172U1 (de) 2010-07-14 2011-10-20 Babel Management Consulting Sensor zur Flüssigkeits- oder Gasanalyse
DE102011056265A1 (de) 2011-12-12 2013-06-13 Weidmüller Interface GmbH & Co. KG Steckvorrichtung zur kontaktlosen induktiven Energieübertragung und Betriebsverfahren für eine solche Steckvorrichtung
DE102011089944A1 (de) 2011-12-27 2013-06-27 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Messumformer mit mindestens einer induktiven Schnittstelle
DE202012102446U1 (de) 2012-07-03 2012-07-26 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Anordnung umfassend einen Messaufnehmer, einen Messumformer sowie eine Anzeige und/oder Bedieneinheit
CN103872525B (zh) * 2012-12-13 2018-01-26 恩德莱斯和豪瑟尔分析仪表两合公司 用于将线缆电路与传感器模块相连接的插头连接单元
DE102013207120A1 (de) * 2013-04-19 2014-10-23 Continental Teves Ag & Co. Ohg Stecker für eine Datenleitung
DE102014116236A1 (de) * 2014-11-07 2016-05-12 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Sensoranordnung, Sensor und Kabel zum Einsatz in der Prozessautomatisierung
DE102015216060A1 (de) * 2015-08-21 2017-02-23 Mts Maschinentechnik Schrode Ag Verbindungsanordnung
DE102017107941A1 (de) * 2017-04-12 2018-10-18 Ilper Elektronik GmbH & Co. KG Steckverbindung für die Daten- und Energieübertragung zwischen einer Basis und einem kabelgebundenen Notruftaster
DE102017128741A1 (de) * 2017-12-04 2019-06-06 Endress+Hauser Conducta Gmbh+Co. Kg Sensoranschlusselement für einen Sensor und Sensorsystem
DE102022104522A1 (de) 2022-02-25 2023-08-31 Turck Holding Gmbh Adapterkabel und Verfahren zum Betrieb von elektronischen Systemkomponenten

Citations (2)

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Publication number Priority date Publication date Assignee Title
US5345231A (en) * 1990-08-23 1994-09-06 Mikron Gesellschaft Fur Integrierte Mikroelectronik Mbh Contactless inductive data-transmission system
DE19719730C1 (de) * 1997-05-09 1998-10-22 Bartec Mestechnik Und Sensorik Steckverbindung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345231A (en) * 1990-08-23 1994-09-06 Mikron Gesellschaft Fur Integrierte Mikroelectronik Mbh Contactless inductive data-transmission system
DE19719730C1 (de) * 1997-05-09 1998-10-22 Bartec Mestechnik Und Sensorik Steckverbindung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004086030A1 (fr) * 2003-03-26 2004-10-07 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh + Co. Kg Module de detection de gaz equipe d'une interface sans contact
WO2007048511A2 (fr) * 2005-10-28 2007-05-03 Sew-Eurodrive Gmbh & Co. Kg Appareil destiné à recevoir un module pour transmettre de l'énergie et/ou des données sans contact
WO2007048511A3 (fr) * 2005-10-28 2007-08-23 Sew Eurodrive Gmbh & Co Appareil destiné à recevoir un module pour transmettre de l'énergie et/ou des données sans contact
US8395281B2 (en) 2005-10-28 2013-03-12 Sew-Eurodrive Gmbh & Co. Kg Device
WO2008077737A1 (fr) * 2006-12-22 2008-07-03 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh+Co. Kg Coupleur de connexion enfichable pour un module de détection et module de détection équipé d'un tel coupleur de connexion enfichable
WO2009050087A2 (fr) * 2007-10-10 2009-04-23 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh+Co. Kg Circuit de câble à conditionnement de signaux numérique
WO2009050087A3 (fr) * 2007-10-10 2009-07-30 Conducta Endress & Hauser Circuit de câble à conditionnement de signaux numérique
US8396683B2 (en) 2007-10-10 2013-03-12 Endress + Hauser Conducta Gesellschaft für Mess-und Regeltechnik mbH + Co. KG Cable circuit with digital signal conditioning
US9285247B2 (en) 2007-10-10 2016-03-15 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Cable circuit with digital signal conditioning
EP2805477A4 (fr) * 2012-01-19 2015-10-14 Rosemount Inc Composant périphérique de capteur prêt à l'emploi pour une instrumentation de procédé
US9762290B2 (en) 2012-12-13 2017-09-12 Endress+Hauser Conducta Gmbh+Co. Kg Plug connecting unit for connecting a cable circuit with a sensor module

Also Published As

Publication number Publication date
WO2003096139A3 (fr) 2004-02-19
AU2003227730A1 (en) 2003-11-11
AU2003227730A8 (en) 2003-11-11
DE10220450A1 (de) 2003-11-20

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