EP0883097A3 - Device for transmitting signals between a transmitter and a receiver - Google Patents

Device for transmitting signals between a transmitter and a receiver Download PDF

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Publication number
EP0883097A3
EP0883097A3 EP98109740A EP98109740A EP0883097A3 EP 0883097 A3 EP0883097 A3 EP 0883097A3 EP 98109740 A EP98109740 A EP 98109740A EP 98109740 A EP98109740 A EP 98109740A EP 0883097 A3 EP0883097 A3 EP 0883097A3
Authority
EP
European Patent Office
Prior art keywords
transmitter
point
measured value
wire line
voltage
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.)
Granted
Application number
EP98109740A
Other languages
German (de)
French (fr)
Other versions
EP0883097A2 (en
EP0883097B1 (en
Inventor
Peter KLÖFER
Jürgen KRÜGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and 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.)
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Publication date
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Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of EP0883097A2 publication Critical patent/EP0883097A2/en
Publication of EP0883097A3 publication Critical patent/EP0883097A3/en
Application granted granted Critical
Publication of EP0883097B1 publication Critical patent/EP0883097B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Abstract

In einer Anordnung zur Signalübertragung zwischen einer Geberstelle (10) und einer Empfangsstelle (12), die miteinander durch eine Zweidrahtleitung (14) verbunden sind, fließt über diese Zweidrahtleitung ein zwischen zwei Grenzwerten veränderlicher analoger Signalstrom (IS). Dieser Signalstrom repräsentiert einen in der Geberstelle (10) von einem Sensor (16) erfaßten Meßwert, und er bildet den für den Betrieb der Geberstelle (10) erforderlichen Versorgungsstrom. Die Geberstelle (10) enthält eine Schaltung (36), die eine konstante Betriebsspannung für die Geberstelle (10) erzeugt. In der Geberstelle (10) ist ferner eine steuerbare Stromquelle (32) vorgesehen, die den über die Zweidrahtleitung (14) fließenden Strom in Abhängigkeit von dem Meßwert bestimmt. Die die Betriebsspannung für die Geberstelle (10) erzeugende Schaltung (36) ist ein Schaltregler, und es ist eine Spannungsquelle (34) in der Geberstelle (10) vorgesehen, deren Ausgangsspannung sich entgegengesetzt zum Meßwert ändert und die die Eingangsspannung des Abwärts-Schaltreglers bildet.

Figure 00000001
In an arrangement for signal transmission between a transmitter point (10) and a receiving point (12), which are connected to one another by a two-wire line (14), an analog signal current (I S ) which varies between two limit values flows via this two-wire line. This signal current represents a measured value detected in the transmitter location (10) by a sensor (16), and it forms the supply current required for the operation of the transmitter location (10). The transmitter (10) contains a circuit (36) that generates a constant operating voltage for the transmitter (10). A controllable current source (32) is also provided in the transmitter point (10) and determines the current flowing via the two-wire line (14) as a function of the measured value. The circuit (36) generating the operating voltage for the transmitter point (10) is a switching regulator, and a voltage source (34) is provided in the transmitter point (10), the output voltage of which changes in the opposite direction to the measured value and which forms the input voltage of the step-down switching regulator .
Figure 00000001
EP98109740A 1997-06-05 1998-05-28 Device for transmitting signals between a transmitter and a receiver Revoked EP0883097B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19723645A DE19723645B4 (en) 1997-06-05 1997-06-05 Arrangement for signal transmission between a donor site and a receiving site
DE19723645 1997-06-05

Publications (3)

Publication Number Publication Date
EP0883097A2 EP0883097A2 (en) 1998-12-09
EP0883097A3 true EP0883097A3 (en) 1999-02-17
EP0883097B1 EP0883097B1 (en) 2003-03-19

Family

ID=7831521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109740A Revoked EP0883097B1 (en) 1997-06-05 1998-05-28 Device for transmitting signals between a transmitter and a receiver

Country Status (4)

Country Link
US (1) US6140940A (en)
EP (1) EP0883097B1 (en)
JP (1) JP2960717B2 (en)
DE (2) DE19723645B4 (en)

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CA2374795A1 (en) * 2002-03-05 2003-09-05 Siemens Milltronics Process Instruments Inc. Current limiter with low drop voltage for surge protection and fuse protection
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US7480487B2 (en) * 2005-05-20 2009-01-20 Dresser, Inc. Power regulation for field instruments
US20060265105A1 (en) * 2005-05-20 2006-11-23 Hughes Albert R Loop-powered field instrument
CN101433037B (en) * 2006-04-28 2013-02-06 微动公司 Bus loop power supply interface and method thereof
DE602007010126D1 (en) * 2006-05-12 2010-12-09 Nxp Bv CURRENT INTERFACE CONNECTED TO AN OUTLET CONNECTOR CONNECTED TO AN ADDITIONAL PIN
DE102007021099A1 (en) 2007-05-03 2008-11-13 Endress + Hauser (Deutschland) Ag + Co. Kg Method for commissioning and / or reconfiguring a programmable field meter
DE102007035710A1 (en) * 2007-07-30 2009-02-05 Siemens Ag Measuring transducer e.g. position regulator, for use in system and automation technology of petrochemical industry, has voltage limiting unit, whose feeding voltage is adjustable independent of measured loop current
EP2053254B1 (en) * 2007-10-24 2010-03-17 Festo AG & Co. KG Fluid valve assembly with at least one electromagnetic valve and an identification data containing device
DE102007058608A1 (en) 2007-12-04 2009-06-10 Endress + Hauser Flowtec Ag Electric device
DE102007062919A1 (en) 2007-12-21 2009-06-25 Endress + Hauser Gmbh + Co. Kg Device for diagnosing or determining operating conditions or environmental conditions of field device of process automation technology, comprises voltmeter unit, where effective loop current is determined over voltage drop
DE102008022373A1 (en) 2008-05-06 2009-11-12 Endress + Hauser Flowtec Ag Measuring device and method for monitoring a measuring device
DE102009024853A1 (en) * 2008-06-12 2009-12-17 Abb Technology Ag Telemetry device with a loop-fed device and method for its operating voltage supply
BRPI0822967B1 (en) 2008-07-31 2020-10-06 Micro Motion, Inc BUS INSTRUMENT AND METHOD TO PREDICTLY LIMIT ENERGY CONSUMPTION IN A TWO LINES INSTRUMENTATION BUS BUS INSTRUMENT
RU2449378C1 (en) * 2008-07-31 2012-04-27 Майкро Моушн, Инк. Bus instrument and method for predictively limited power consumption in two-wire instrumentation bus
DE102008043178A1 (en) * 2008-10-24 2010-04-29 Endress + Hauser Wetzer Gmbh + Co. Kg Field device for process automation technology, has control unit including current measurement unit that determines value of intensity of current applied at interface and flowing via control element
DE102008043199A1 (en) 2008-10-27 2010-04-29 Endress + Hauser Process Solutions Ag Self-sufficient field device
DE102009005220A1 (en) * 2009-01-20 2010-04-22 Continental Automotive Gmbh Smart sensor system for use in automobile, has voltage regulator for supplying external supply voltage via supply line, and electronic switch whose load connection is connected with constant operating voltage by resistor
DE102009014252A1 (en) * 2009-03-20 2010-09-23 Siemens Aktiengesellschaft Field device for process instrumentation
WO2011048786A1 (en) * 2009-10-21 2011-04-28 旭化成エレクトロニクス株式会社 Two-wire transmitter
WO2011131399A1 (en) 2010-04-19 2011-10-27 Endress+Hauser Flowtec Ag Driver circuit for a measuring transducer and measuring system designed having same
DE202010006553U1 (en) 2010-05-06 2011-10-05 Endress + Hauser Flowtec Ag Electronic measuring device with an optocoupler
DE102010030924A1 (en) 2010-06-21 2011-12-22 Endress + Hauser Flowtec Ag Electronics housing for an electronic device or device formed therewith
JP5141790B2 (en) 2010-10-05 2013-02-13 横河電機株式会社 2-wire transmitter
DE102010062310A1 (en) 2010-12-01 2012-06-06 Siemens Aktiengesellschaft Circuit arrangement for transmitting a digital signal with an optocoupler
DE102011050007B4 (en) * 2011-04-29 2015-10-22 Samson Ag positioner
DE102011076838A1 (en) 2011-05-31 2012-12-06 Endress + Hauser Flowtec Ag Meter electronics for a meter device and meter device formed thereby
DE102011089941A1 (en) * 2011-12-27 2013-06-27 Endress + Hauser Gmbh + Co. Kg Device for determining and / or monitoring a limit value of a process variable
DE102013100799A1 (en) 2012-12-21 2014-06-26 Endress + Hauser Flowtec Ag Converter circuit with a current interface and measuring device with such a converter circuit
DE102013109096A1 (en) 2013-08-22 2015-02-26 Endress + Hauser Flowtec Ag Tamper-proof electronic device
DE102013114377A1 (en) * 2013-12-18 2015-06-18 Endress + Hauser Gmbh + Co. Kg Field device for detecting or monitoring a physical or chemical process variable of a medium
DE102014108107A1 (en) 2014-06-10 2015-12-17 Endress + Hauser Flowtec Ag Coil arrangement and thus formed electromechanical switch or transmitter
DE102016114860A1 (en) 2016-08-10 2018-02-15 Endress + Hauser Flowtec Ag Driver circuit and thus formed converter electronics or thus formed measuring system
DE102017102678A1 (en) 2017-02-10 2018-08-16 Endress+Hauser SE+Co. KG Field device for determining a limit value
DE102017130775A1 (en) 2017-12-20 2019-06-27 Endress+Hauser SE+Co. KG Field device electronics for a field device of automation technology
JP7010205B2 (en) 2018-12-25 2022-01-26 横河電機株式会社 2-wire transmitter
DE102019201322A1 (en) * 2019-02-01 2020-08-06 Vega Grieshaber Kg Analog-digital mixed operation for one sensor input
DE102022119145A1 (en) 2022-07-29 2024-02-01 Endress+Hauser Flowtec Ag Connection circuit for a field device and field device

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DE3934007A1 (en) * 1989-03-31 1990-10-04 Fischer & Porter Co TWO WIRE REMOTE EQUIPMENT
WO1994020940A1 (en) * 1993-03-03 1994-09-15 Milltronics Ltd. Loop powered process control transmitter

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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
DE3934007A1 (en) * 1989-03-31 1990-10-04 Fischer & Porter Co TWO WIRE REMOTE EQUIPMENT
WO1994020940A1 (en) * 1993-03-03 1994-09-15 Milltronics Ltd. Loop powered process control transmitter

Also Published As

Publication number Publication date
US6140940A (en) 2000-10-31
JPH1116082A (en) 1999-01-22
EP0883097A2 (en) 1998-12-09
DE19723645A1 (en) 1998-12-10
EP0883097B1 (en) 2003-03-19
JP2960717B2 (en) 1999-10-12
DE19723645B4 (en) 2006-04-13
DE59807514D1 (en) 2003-04-24

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