WO2003060851A1 - Sensoranordnung - Google Patents
Sensoranordnung Download PDFInfo
- Publication number
- WO2003060851A1 WO2003060851A1 PCT/EP2002/014607 EP0214607W WO03060851A1 WO 2003060851 A1 WO2003060851 A1 WO 2003060851A1 EP 0214607 W EP0214607 W EP 0214607W WO 03060851 A1 WO03060851 A1 WO 03060851A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- output signal
- output
- transmitter
- raw
- Prior art date
Links
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
Definitions
- the invention relates to a transmitter with a measuring sensor, which is used to record a physical measured variable and convert it into an electrical variable, a signal preprocessing, which serves to convert the electrical variable into a raw signal, a signal processing, which serves to convert the raw signal into a measuring signal convert, and an output stage which serves to output an output signal corresponding to the measurement signal
- a transmitter usually consists of a sensor, which detects a physical measured variable and converts it into an electrical variable, and electronics, which converts the electrical variable into a measurement signal, which is then output by an output stage in the form of an output signal.
- the measurement signals are usually from a higher-level unit, e.g. a control and / or regulating unit.
- the higher-level unit supplies display, control and / or regulating signals for the control, control and / or automation of a process as a function of the current measured values. Examples of this are programmable logic controllers (PLC), process control systems (PLS) or personal computers (PC).
- PLC programmable logic controllers
- PLS process control systems
- PC personal computers
- the physical size is from
- Sensor is detected and converted into a raw signal using signal preprocessing.
- the measurement signal is obtained from the raw signal in signal processing and fed to an output stage which emits a corresponding output signal.
- the invention consists in a transmitter with
- An output stage which serves to output an output signal corresponding to the measurement signal
- the output stage emits an analog output signal
- the transmitter has an electronic unit, which is used to process the supplied measurement signal in accordance with an application-specific transfer function.
- the application-specific transfer function is used to set a zero point and to scale the measurement signal.
- the monitoring unit has a second electronic unit
- the transfer function is stored in a memory assigned to the unit
- the second electronic unit derives the auxiliary signal during operation from the raw signal by processing the raw signal according to the application-specific transfer function, and compares this processed raw signal with the output signal.
- the safety-related setting of the output signal is an alarm signal.
- the invention further consists in a method for starting up a transmitter with a first and a second electronic unit, in which the transfer function is supplied by the user via a communication interface to the first electronic unit or a transfer function present in the transmitter is selected, the transfer function once via a data line is transmitted from the first to the second electronic unit, and is stored in a memory assigned to the second electronic unit.
- Fig. 1 shows a block diagram of a transmitter according to the invention.
- Fig. 2 shows the monitoring unit shown in Fig. 1.
- 1 shows a block diagram of a transmitter according to the invention.
- the transmitter has a sensor 1, which is used to record a physical measured variable X and to convert it into an electrical variable.
- This can be, for example, a pressure, temperature, flow or a level sensor.
- the physical measured variable X acts on the measuring sensor 1 and this emits an electrical variable corresponding to a current measured value of the physical variable X, which is fed to a signal preprocessing 3.
- the signal preprocessing 3 serves to convert the electrical quantity into a raw signal R, which is then available for further processing and / or evaluation.
- the electrical quantity is amplified and / or filtered, for example.
- the raw signal R is converted into a measurement signal M by a subsequent signal processing 4.
- a subsequent signal processing 4 e.g. compensation for a possible temperature dependency of the raw signal.
- Corrections and changes e.g. result from sensor-specific characteristic curves or compensation and / or calibration data.
- the measurement signal M is applied to an electronic unit 5, e.g. to a microprocessor, which processes the measurement signal M in accordance with an application-specific transfer function F.
- an application-specific transfer function F e.g. a zero point of the physical quantity desired by the user and a scaling of the measured value, e.g. in the form of a measurement range specification or a unit in which a measurement result is to be output.
- the measurement signal M prepared in accordance with the transfer function F is present at an output stage 7, which emits an output signal corresponding to the measurement signal M.
- An output signal can e.g. a current corresponding to a current measured value, a voltage corresponding to the current measured value or a digital signal.
- the output signal is a current I (X) which changes as a function of the physical variable X.
- Monitoring unit 9 Parallel to the signal processing path formed by the signal processing 4, the electronic unit 5 and the output stage 7 is one Monitoring unit 9 is provided. 2 shows an exemplary embodiment for a structure of the monitoring unit 9.
- the monitoring unit 9 has a first input at which the raw signal R is present.
- the monitoring unit 9 compares the output signal with an auxiliary signal H derived from the raw signal R and effects a safety-related adjustment of the output signal if a deviation between the output signal and the raw signal R exceeds a predetermined frame.
- the raw signal R is of course less precise than the output signal.
- a tolerable deviation between auxiliary signal H and output signal is therefore preferably defined, which can occur due to the different accuracies of the two signals. If the deviation between the two signals exceeds this limit, there is a malfunction which is immediately recognized by the transmitter designed according to the invention. Accordingly, the transmitter can undertake a safety-related setting of the output signal.
- the operator is warned by the transmitter and it is ensured that no major damage will be caused until the error is remedied.
- the monitoring unit 9 has a measuring circuit 11 in which the output signal is detected and fed to a comparator 13.
- the monitoring unit 9 also has an electronic unit 15, e.g. a second microprocessor, which in operation derives the auxiliary signal H from the raw signal R by processing the raw signal R in accordance with the application-specific transfer function F.
- the electronic unit 15 compares the auxiliary signal H thus obtained with the current output signal.
- a memory 17 is assigned to the electronic unit 15, in which the transfer function F is stored.
- the transfer function F is preferably supplied by the user via a communication interface to the first electronic unit 5 in the signal processing branch in a first step.
- a transmission function available in the transmitter can also be selected by the user. This can be done, for example, using a menu which can be used to select various measuring ranges, signal output modes, units in which the measured value is to be specified, etc.
- the communication interface is shown only symbolically in the form of an arrow in FIG. 1. Although this is referred to as a communication interface, a simple unidirectional transmission of the transfer function F to the electronic unit 5 may also be sufficient for some transmitters. This does not necessarily have to be done via a separate interface, it can also take place via the lines via which the transmitter is supplied and / or via which the output signal is emitted.
- the transfer function F is transmitted once by the first electronic unit 5 via a data line 19 from the first to the second electronic unit 5, 15 and is stored in a memory 17 assigned to the second electronic unit 15.
- a transmitter In a transmitter according to the invention, the entire signal processing branch is monitored. Any kind of errors occurring here are recognized immediately and the transmitter reacts automatically in a safety-related manner.
- a safety-related setting of the output signal can be an alarm signal, for example.
- an alarm signal can consist, for example, in that the current is regulated to a value which it does not assume under normal measuring conditions. If the currents corresponding to the current measured value lie between 4 mA and 20 mA in error-free operation, currents above 20 mA or below 4 mA can have the meaning of an alarm.
- a safety-related setting can of course also mean that an output signal is set which corresponds to a measured value at which as little damage as possible is triggered by the malfunctioning transmitter.
- a safety-related setting can consist in the transmitter, which has recognized its malfunction, reporting that the container is full, regardless of the fill state, so that no more fill material is filled. This prevents the container from overflowing.
- an alarm signal is preferably superimposed on the output signal.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/500,857 US7139683B2 (en) | 2002-01-18 | 2002-12-20 | Transmitter |
JP2003560874A JP4393873B2 (ja) | 2002-01-18 | 2002-12-20 | 送信器 |
EP02793094A EP1466308B1 (de) | 2002-01-18 | 2002-12-20 | Sensoranordnung |
AT02793094T ATE446561T1 (de) | 2002-01-18 | 2002-12-20 | Sensoranordnung |
DE50213952T DE50213952D1 (de) | 2002-01-18 | 2002-12-20 | Sensoranordnung |
AU2002358775A AU2002358775A1 (en) | 2002-01-18 | 2002-12-20 | Sensor arrangement |
US11/540,755 US7539600B2 (en) | 2002-01-18 | 2006-10-02 | Transmitter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10202028.0 | 2002-01-18 | ||
DE10202028A DE10202028A1 (de) | 2002-01-18 | 2002-01-18 | Transmitter |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10500857 A-371-Of-International | 2002-12-20 | ||
US11/540,755 Division US7539600B2 (en) | 2002-01-18 | 2006-10-02 | Transmitter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003060851A1 true WO2003060851A1 (de) | 2003-07-24 |
Family
ID=7712599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/014607 WO2003060851A1 (de) | 2002-01-18 | 2002-12-20 | Sensoranordnung |
Country Status (9)
Country | Link |
---|---|
US (2) | US7139683B2 (de) |
EP (1) | EP1466308B1 (de) |
JP (1) | JP4393873B2 (de) |
CN (1) | CN100407244C (de) |
AT (1) | ATE446561T1 (de) |
AU (1) | AU2002358775A1 (de) |
DE (2) | DE10202028A1 (de) |
RU (1) | RU2280901C2 (de) |
WO (1) | WO2003060851A1 (de) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005017851A1 (en) * | 2003-08-07 | 2005-02-24 | Rosemount Inc. | Process device with loop override |
WO2005101345A1 (de) * | 2004-04-19 | 2005-10-27 | Endress+Hauser Gmbh+Co. Kg | Digitaler messumformer mit stromsignal |
US7098798B2 (en) | 2003-08-07 | 2006-08-29 | Rosemount Inc. | Process device with loop override |
WO2006104712A2 (en) | 2005-03-31 | 2006-10-05 | Rosemount Inc. | Process control loop current verification |
US7464721B2 (en) | 2004-06-14 | 2008-12-16 | Rosemount Inc. | Process equipment validation |
WO2010037687A2 (de) * | 2008-10-02 | 2010-04-08 | Siemens Aktiengesellschaft | Messumformer |
DE102008054053A1 (de) | 2008-10-30 | 2010-05-06 | Siemens Aktiengesellschaft | Feldgerät für die Prozessautomatisierung |
US8180466B2 (en) | 2003-11-21 | 2012-05-15 | Rosemount Inc. | Process device with supervisory overlayer |
US9020768B2 (en) | 2011-08-16 | 2015-04-28 | Rosemount Inc. | Two-wire process control loop current diagnostics |
DE102014101945A1 (de) | 2013-12-23 | 2015-06-25 | Endress + Hauser Gmbh + Co. Kg | Messumformer mit Überwachungsfunktion |
US20170093533A1 (en) | 2015-09-30 | 2017-03-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10211771A1 (de) * | 2002-03-14 | 2003-10-09 | Endress & Hauser Gmbh & Co Kg | Transmitter |
DE102007059847A1 (de) * | 2007-12-12 | 2009-06-18 | Siemens Ag | Feldgerät zur Prozessinstrumentierung |
US20100122945A1 (en) * | 2008-11-17 | 2010-05-20 | David Williamson | Grey water conservation mechanism |
US8344716B2 (en) * | 2008-11-21 | 2013-01-01 | L&L Engineering, Llc | Methods and systems for power supply adaptive control utilizing transfer function measurements |
DE102009050645A1 (de) | 2009-10-26 | 2011-04-28 | Siemens Aktiengesellschaft | Feldgerät zur Prozessinstrumentierung |
DE102011085877B4 (de) * | 2011-11-07 | 2016-03-17 | Siemens Aktiengesellschaft | Kommunikationsverfahren und Kommunikationseinrichtung für die Prozessindustrie |
DE102012000187B4 (de) | 2012-01-09 | 2014-02-27 | Krohne Messtechnik Gmbh | Verfahren zur Überwachung eines Transmitters und entsprechender Transmitter |
US20140074303A1 (en) * | 2012-09-10 | 2014-03-13 | Kevin M. Haynes | Two-wire transmitter terminal power diagnostics |
KR102008553B1 (ko) * | 2012-10-23 | 2019-08-07 | 닛본 세이고 가부시끼가이샤 | 토오크 검출 장치, 전동 파워 스티어링 장치 및 차량 |
DE102012223706A1 (de) * | 2012-12-19 | 2014-06-26 | Siemens Aktiengesellschaft | Feldgerät mit einem Analogausgang |
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WO1988001417A1 (en) * | 1986-08-22 | 1988-02-25 | Rosemount Inc. | Analog transducer circuit with digital control |
US4804958A (en) * | 1987-10-09 | 1989-02-14 | Rosemount Inc. | Two-wire transmitter with threshold detection circuit |
WO2001003098A1 (de) * | 1999-07-02 | 2001-01-11 | Siemens Aktiengesellschaft | Messumformer mit korrigiertem ausgangssignal |
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2002
- 2002-01-18 DE DE10202028A patent/DE10202028A1/de not_active Withdrawn
- 2002-12-20 DE DE50213952T patent/DE50213952D1/de not_active Expired - Lifetime
- 2002-12-20 JP JP2003560874A patent/JP4393873B2/ja not_active Expired - Fee Related
- 2002-12-20 AU AU2002358775A patent/AU2002358775A1/en not_active Abandoned
- 2002-12-20 WO PCT/EP2002/014607 patent/WO2003060851A1/de active Application Filing
- 2002-12-20 EP EP02793094A patent/EP1466308B1/de not_active Expired - Lifetime
- 2002-12-20 US US10/500,857 patent/US7139683B2/en not_active Expired - Lifetime
- 2002-12-20 AT AT02793094T patent/ATE446561T1/de not_active IP Right Cessation
- 2002-12-20 RU RU2004125153/28A patent/RU2280901C2/ru not_active IP Right Cessation
- 2002-12-20 CN CN028272811A patent/CN100407244C/zh not_active Expired - Lifetime
-
2006
- 2006-10-02 US US11/540,755 patent/US7539600B2/en not_active Expired - Lifetime
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WO1988001417A1 (en) * | 1986-08-22 | 1988-02-25 | Rosemount Inc. | Analog transducer circuit with digital control |
US4804958A (en) * | 1987-10-09 | 1989-02-14 | Rosemount Inc. | Two-wire transmitter with threshold detection circuit |
WO2001003098A1 (de) * | 1999-07-02 | 2001-01-11 | Siemens Aktiengesellschaft | Messumformer mit korrigiertem ausgangssignal |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005017851A1 (en) * | 2003-08-07 | 2005-02-24 | Rosemount Inc. | Process device with loop override |
US7098798B2 (en) | 2003-08-07 | 2006-08-29 | Rosemount Inc. | Process device with loop override |
JP2007501979A (ja) * | 2003-08-07 | 2007-02-01 | ローズマウント インコーポレイテッド | ループオーバライド付きプロセス装置 |
JP4762140B2 (ja) * | 2003-08-07 | 2011-08-31 | ローズマウント インコーポレイテッド | ループオーバライド付きプロセス装置、及び方法 |
US7280048B2 (en) | 2003-08-07 | 2007-10-09 | Rosemount Inc. | Process control loop current verification |
US8180466B2 (en) | 2003-11-21 | 2012-05-15 | Rosemount Inc. | Process device with supervisory overlayer |
WO2005101345A1 (de) * | 2004-04-19 | 2005-10-27 | Endress+Hauser Gmbh+Co. Kg | Digitaler messumformer mit stromsignal |
US7928742B2 (en) | 2004-04-19 | 2011-04-19 | Endress + Hauser Gmbh + Co. Kg | Digital measurement transmitter with current signal |
US7464721B2 (en) | 2004-06-14 | 2008-12-16 | Rosemount Inc. | Process equipment validation |
WO2006104712A2 (en) | 2005-03-31 | 2006-10-05 | Rosemount Inc. | Process control loop current verification |
WO2006104712A3 (en) * | 2005-03-31 | 2007-03-01 | Rosemount Inc | Process control loop current verification |
DE102008050354A1 (de) | 2008-10-02 | 2010-04-08 | Siemens Aktiengesellschaft | Messumformer |
WO2010037687A3 (de) * | 2008-10-02 | 2011-01-20 | Siemens Aktiengesellschaft | Messumformer |
WO2010037687A2 (de) * | 2008-10-02 | 2010-04-08 | Siemens Aktiengesellschaft | Messumformer |
DE102008054053A1 (de) | 2008-10-30 | 2010-05-06 | Siemens Aktiengesellschaft | Feldgerät für die Prozessautomatisierung |
US8970203B2 (en) | 2008-10-30 | 2015-03-03 | Siemens Aktiengesellschaft | Field device for process automation |
US9020768B2 (en) | 2011-08-16 | 2015-04-28 | Rosemount Inc. | Two-wire process control loop current diagnostics |
DE102014101945A1 (de) | 2013-12-23 | 2015-06-25 | Endress + Hauser Gmbh + Co. Kg | Messumformer mit Überwachungsfunktion |
WO2015096933A1 (de) | 2013-12-23 | 2015-07-02 | Endress+Hauser Gmbh+Co. Kg | Messumformer mit überwachungsfunktion |
US20170093533A1 (en) | 2015-09-30 | 2017-03-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
US10367612B2 (en) | 2015-09-30 | 2019-07-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
Also Published As
Publication number | Publication date |
---|---|
ATE446561T1 (de) | 2009-11-15 |
US7139683B2 (en) | 2006-11-21 |
US20070073523A1 (en) | 2007-03-29 |
JP4393873B2 (ja) | 2010-01-06 |
JP2005515567A (ja) | 2005-05-26 |
EP1466308A1 (de) | 2004-10-13 |
AU2002358775A1 (en) | 2003-07-30 |
RU2004125153A (ru) | 2005-04-20 |
EP1466308B1 (de) | 2009-10-21 |
DE10202028A1 (de) | 2003-07-24 |
CN1615497A (zh) | 2005-05-11 |
DE50213952D1 (de) | 2009-12-03 |
CN100407244C (zh) | 2008-07-30 |
RU2280901C2 (ru) | 2006-07-27 |
US7539600B2 (en) | 2009-05-26 |
US20050149295A1 (en) | 2005-07-07 |
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