DE2630958A1 - ERROR COMPENSATION PROCEDURE - Google Patents
ERROR COMPENSATION PROCEDUREInfo
- Publication number
- DE2630958A1 DE2630958A1 DE19762630958 DE2630958A DE2630958A1 DE 2630958 A1 DE2630958 A1 DE 2630958A1 DE 19762630958 DE19762630958 DE 19762630958 DE 2630958 A DE2630958 A DE 2630958A DE 2630958 A1 DE2630958 A1 DE 2630958A1
- Authority
- DE
- Germany
- Prior art keywords
- values
- error compensation
- compensation method
- time
- temperature
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/32—Compensating for temperature change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/005—Circuits for altering the indicating characteristic, e.g. making it non-linear
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Description
HELIOüuATT-liERKE 1 Berlin 12, den 1. Juli 1976HELIOüuATT-liERKE 1 Berlin 12, July 1, 1976
Elektrizitäts-Gesellschaft mbH Wilmersdorfer^grtj 0^9 5 8Elektrizitäts-Gesellschaft mbH Wilmersdorfer ^ grtj 0 ^ 9 5 8
E 2 Se/ir - D576.19E 2 Se / ir - D576.19
Die nachstehend beschriebene Erfindung betrifft ein Fehlerkompensationsverfahren für Meßgeräte zur Erfassung analoger elektrischer oder in solche umgeformter Größen, insbesondere solche, die analoge Größen in digitale Iderte umsetzen.The invention described below relates to an error compensation method for measuring devices for the acquisition of analog electrical quantities or those converted into such quantities, in particular those that convert analog quantities into digital values.
Die MeBgenauigkeit derartiger Heßgeräte hängt im allgemeinen von den Eigenschaften v/ieler verschiedener Bauteile ab. Die Fehler wirken sich in erster Linie auf die Nullpunktkonstanz und die Eichung, d.h. die Steigung der Umsetzer-Kennlinie, aus. Es sind zahlreiche Verfahren zur automatischen Nullpunkt- und Eichungskorrektur bekannt, die diese erstgenannten Nachteile vermeiden. Bei einem mit automatischer Nullpunkt- und Eichungskorrektur ausgerüsteten Meßgerät verbleibt zunächst der Linearitätsfehler der Umsetzer-Kennlinie.The measuring accuracy of such heating devices generally depends on the properties many different components. The mistakes work in the first place Line on the zero point constancy and the calibration, i.e. the slope of the converter characteristic, the end. Numerous methods for automatic zero point and calibration correction are known which avoid these disadvantages mentioned first. In the case of a measuring device equipped with automatic zero point and calibration correction, the linearity error of the converter characteristic initially remains.
In einem jeden solchen Meßgerät bleiben jeweils die ReferenzgröBen und oft auch analoge Bauelemente außerhalb der Nullungs- und Eichungsregelkreise· Abgesehen davon, daß bei der Prüfung eines solchen Meßgerätes die Istwerte der ReferenzgröBen sowie der nicht von der Nullpunkt- und Eichungskorrektur erfaßten Bauelemente mit Hilfe geeigneter Einstellelemente auf die jeweiligen Sollwerte abzugleichen sind, verbleiben noch TemperaturabhSngigkeiten Bowie die alterungsbedingten Driften.The reference quantities and often also remain in each such measuring device analog components outside of the zeroing and calibration control loops as well as the components not covered by the zero point and calibration correction to the respective setpoints with the help of suitable setting elements are to be adjusted, there are still temperature dependencies Bowie the age-related ones Drift.
Aufgabe der nachstehend beschriebenen Erfindung ist es, Meßgeräte zu schaffen, die keinerlei Abgleichelemente mehr enthalten und deshalb keine Abgleicharbeiten erfordern und bei denen ferner Temperaturabhängigkeiten und alterungsbedingte Driften selbsttätig weitgehend kompensiert werden.The object of the invention described below is to create measuring devices which no longer contain any adjustment elements and therefore no adjustment work require and where further temperature dependencies and age-related Drifting can be largely compensated for automatically.
Gemäß der Erfindung enthalten die Meßgeräte einen nichtflüchtigen elektrisch programmierbaren Speicher. Beim Abgleich einee solchen Meßgerätes werden die Abweichungen der nicht von der Nullpunkt- und Eichungskorrektur erfaßten Bauelemente und der ReferenzgröBen von ihren jeweiligen Sollwerten ermittelt, und es werden entsprechende Korrekturwerte bzw. aus mehreren MeBpunkten bestehende Karrekturkurven in den Speicher eingeschrieben und jedesmal bei der BerechnungAccording to the invention, the meters contain a non-volatile electrical programmable memory. When calibrating such a measuring device, the Deviations of the components not covered by the zero point and calibration correction and the reference values are determined from their respective setpoints, and Corresponding correction values or correction curves consisting of several measurement points are written into the memory and each time during the calculation
709882/0517 -2 -709882/0517 - 2 -
ORIGINAL INSPECTEDORIGINAL INSPECTED
-Z--Z-
des endgültigen Meßergebnisses berücksichtigt. Auf diese üJeise sind jederzeit Nacheichungen möglich. Prüfung und Abspeichern der Korrekturwerte bzw. -kurven erfolgen in kürzester Zeit automatisch.of the final measurement result. In this way you are at all times Recalibration possible. Checking and saving the correction values or curves take place automatically in a very short time.
Zur weitgehenden Kompensation von Temperatureinflüssen werden erfindungsgemäß entweder generische oder individuelle Temperaturkoeffizienten bzw· Temperaturkujven der nicht von der Nullpunkt- und Eichungskorrektur erfaßten Bauelemente und der Referenzgrößen ermittelt und in den Speicher geschrieben. Ein solches Meßgerät enthält ferner einen Temperaturfühler, dessen Ausgangssignal zweckmäßig über den meist vorhandenen Analog-Digital-Wandler verarbeitet wird. Bei der Berechnung des endgültigen Meßergebnisses werden nun das Ausgangssignal des Temperaturfühlers sowie die im Speicher enthaltenen Temperaturkaeffizienten bzw. -kurven berücksichtigt.In order to largely compensate for temperature influences, according to the invention either generic or individual temperature coefficients or temperature curves the components not covered by the zero point and calibration correction and the reference values are determined and written to the memory. Such a measuring device also contains a temperature sensor, the output signal of which is expediently processed via the analog-digital converter that is usually available. At the calculation the final measurement result is now the output signal of the temperature sensor as well as the temperature coefficients or curves contained in the memory are taken into account.
Die letzte verbleibende Fehlerursache, die Alterung, wird erfindungsgemäß dadurch weitgehend kompensiert, daß generische oder individuelle Alterungsraten der nicht von der Nullpunkt- und Eichungskorrektur erfaßten Bauteile sowie der Referenzgrössen ermittelt und in den Speicher geschrieben werden. Ferner ist eine Zeitbasis vorhanden, die - von einer geeigneten, ausreichend genauen Frequenz abgeleitet bei erstmaliger Inbetriebnahme eines solchen Meßgerätes auf Null gestellt wird und deren jeweiliger Stand auch bei Ausfall der Stromversorgung in einem entsprechenden nichtflüchtigen Speicher erhalten bleibt. Bei der Berechnung des endgültigen Meßergebnisses werden der gegenwärtige Stand der Zeitbasis sowie die im Speicher enthaltenen Alterungsraten berücksichtigt. Bei einer späteren Nacheichung sind aus den zu diesem Zeitpunkt gemessenen und den im Speicher vorhandenen Abweichungen der Bauelemente und Referenzgrößen von ihren Sollwerten die tatsächlich erfolgten Alterungseffekte zu ermitteln und entsprechend neue liierte für die Alterungsraten in den Speicher zu schreiben. Idegen des logarithmischen Verlaufs von Alterungsvorgängen wird ein solches Meßgerät somit im Laufe der Zeit immer genauer.The last remaining cause of the error, aging, is largely compensated according to the invention in that generic or individual aging rates of the components not recorded by the zero point and calibration correction and of the reference values are determined and written to the memory. There is also a time base which - derived from a suitable, sufficiently precise frequency - is set to zero when such a measuring device is first put into operation and whose current status is retained in a corresponding non-volatile memory even if the power supply fails. When calculating the final measurement result, the current status of the time base and the aging rates contained in the memory are taken into account. In the event of a later recalibration, the actual aging effects must be determined from the deviations of the components and reference values from their target values measured at this point in time and the deviations in the memory and corresponding new relationships for the aging rates are to be written to the memory. Due to the logarithmic course of aging processes, such a measuring device becomes more and more accurate over time.
Der vorerwähnte Linearitätsfehler der Umsetzer-Kennlinie eines Analog-Digital-üJandlers in einem solchen Meßgerät läßt sich erfindungsgemäß ebenfalls weitgehend kompensieren, indem eine Meßkurve aus entsprechend vielen Punkten ermittelt und in den Speicher zur späteren Berücksichtigung bei der Berechnung des Meßergebnisses eingeschrieben wird.The aforementioned linearity error in the converter characteristic of an analog-digital converter in such a measuring device, according to the invention, can also be largely compensate by determining a measurement curve from a corresponding number of points and in the memory for later consideration when calculating the measurement result is enrolled.
709382/0517709382/0517
Sofern bereits für andere Bauelemente ader Referenzgräßen Korrekturkurven zu speichern waren, läßt sich die Kompensation des Linearitätsfehlers des Analog-/ Digital-Ldandlers damit kombinieren, indem die Korrekturkurve für das andere Bauelement nicht unmittelbar an diesem selbst aufgenommen wird, sondern indem die Korrekturkurve dieses Bauelements über den Analog-ZDigital-üJandler gemessen wird und die LJerte an dessen Ausgang abgegriffen werden; eine so erhaltene Korrekturkurve enthält dann auch die Fehler des Analag-Aiigital-liJandlers.If the reference values are already corrected for other components were saved, the compensation of the linearity error of the analog / Digital-Ldandlers combine with it by the correction curve for the other component is not recorded directly on this itself, but rather by measuring the correction curve of this component via the analog-ZDigital transducer and the values are tapped at its output; a correction curve thus obtained then also contains the errors of the Analag-Aiigital-liJandler.
Die beschriebene Erfindung läßt sich besonders vorteilhaft in Meßgeräten einsetzen, die einen Computer verwenden. Sofern der Anwender eines solchen Meßgeräts über geeignete Meßnormalien verfügt, können solche Meßgeräte auch so ausgeführt werden, daß der Anwender nur jeweils die Normalien anzuschließen und dem Meßgerät durch einen geeigneten Befehl mitzuteilen braucht, daß es neue Speicherwerte errechnen und damit die alten überspeichern soll.The invention described can be used particularly advantageously in measuring devices, who use a computer. If the user of such a measuring device has suitable measuring standards, such measuring devices can also be designed in this way that the user only has to connect the standard parts and the measuring device needs to communicate by means of a suitable command that it is to calculate new memory values and thus overstore the old ones.
709882/0517709882/0517
Claims (11)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762630958 DE2630958B2 (en) | 1976-07-07 | 1976-07-07 | Error compensation method |
NL7704952A NL7704952A (en) | 1976-07-07 | 1977-05-05 | FAULT COMPENSATION SYSTEM. |
DK205577A DK205577A (en) | 1976-07-07 | 1977-05-11 | ERROR COMPENSATION METHOD |
CH675477A CH624773A5 (en) | 1976-07-07 | 1977-06-01 | Error compensation method for a measuring instrument for detecting and processing analog electrical quantities or quantities transformed into such. |
BE178581A BE855871A (en) | 1976-07-07 | 1977-06-20 | ERROR COMPENSATION PROCESS |
GB2818977A GB1532362A (en) | 1976-07-07 | 1977-07-05 | Measuring instruments |
IT2538877A IT1084976B (en) | 1976-07-07 | 1977-07-05 | MEASURING APPARATUS WITH ERROR COMPENSATION |
LU77695A LU77695A1 (en) | 1976-07-07 | 1977-07-06 | |
IE140477A IE45354B1 (en) | 1976-07-07 | 1977-07-06 | Measuring instruments |
FR7720852A FR2357905A1 (en) | 1976-07-07 | 1977-07-06 | ERROR COMPENSATION PROCESS, IN PARTICULAR FOR MEASURING EQUIPMENT TRANSFORMING ANALOGUE QUANTITIES INTO DIGITAL VALUES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762630958 DE2630958B2 (en) | 1976-07-07 | 1976-07-07 | Error compensation method |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2630958A1 true DE2630958A1 (en) | 1978-01-12 |
DE2630958B2 DE2630958B2 (en) | 1978-07-27 |
Family
ID=5982622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762630958 Ceased DE2630958B2 (en) | 1976-07-07 | 1976-07-07 | Error compensation method |
Country Status (10)
Country | Link |
---|---|
BE (1) | BE855871A (en) |
CH (1) | CH624773A5 (en) |
DE (1) | DE2630958B2 (en) |
DK (1) | DK205577A (en) |
FR (1) | FR2357905A1 (en) |
GB (1) | GB1532362A (en) |
IE (1) | IE45354B1 (en) |
IT (1) | IT1084976B (en) |
LU (1) | LU77695A1 (en) |
NL (1) | NL7704952A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3611689A1 (en) * | 1986-04-08 | 1987-10-15 | Bbc Brown Boveri & Cie | Recording tester having an upstream-connected measurement converter |
DE3611680A1 (en) * | 1986-04-08 | 1987-10-15 | Bbc Brown Boveri & Cie | Method for measurement conversion |
DE3802680A1 (en) * | 1987-01-29 | 1988-08-11 | Fluke Mfg Co John | DEVICE AND METHOD FOR THE INTERNAL CALIBRATION OF AN ELECTRICAL CALIBRATION DEVICE |
DE4035803A1 (en) * | 1990-11-10 | 1992-05-14 | Vdo Schindling | Evaluating analogue voltage signals for controlling IC engine of motor vehicle - using circuit contg. A=D converter, reference voltage source and computer |
US5425361A (en) * | 1991-11-28 | 1995-06-20 | Paul-Gerhard Fenzlein | Apparatus for the determination of medical, electro-chemical measured values relevant to organic or metabolic functions |
WO1999021279A1 (en) | 1997-10-17 | 1999-04-29 | Siemens Aktiengesellschaft | Circuit for regulating the current supplied to an electromechanical component in a motor vehicle |
DE19823706A1 (en) * | 1998-05-27 | 1999-09-23 | Siemens Ag | Measuring apparatus for determining electric parameters of alternating voltage network |
US6313977B1 (en) | 1998-10-16 | 2001-11-06 | Siemens Aktiengesellschaft | Circuit configuration for regulating the current fed to an electromechanical component in a motor vehicle |
US7489122B2 (en) | 2003-09-26 | 2009-02-10 | Siemens Aktiengesellschaft | Method and device for measuring voltage |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502866B1 (en) * | 1981-03-24 | 1986-07-18 | Thomson Csf | COMPENSATION DEVICE FOR DERIVATIVES OF AT LEAST ONE MEASUREMENT CHAIN AND ITS APPLICATION |
EP0079086B1 (en) * | 1981-11-10 | 1987-07-01 | Sentron v.o.f. | Catheter sensor and memory unit |
NL193256C (en) * | 1981-11-10 | 1999-04-02 | Cordis Europ | Sensor system. |
DE3212611A1 (en) * | 1982-04-05 | 1983-10-06 | Bosch Gmbh Robert | METHOD FOR TEMPERATURE COMPENSATION OF A SENSOR SIGNAL |
US4468968A (en) * | 1983-04-21 | 1984-09-04 | The Singer Company | Method and arrangement for providing information to define the values of a set of parameters which characterize an element |
US4628277A (en) * | 1985-05-01 | 1986-12-09 | General Electric Company | Femtoammeter |
CH670507A5 (en) * | 1986-05-23 | 1989-06-15 | Mettler Instrumente Ag | |
CH670508A5 (en) * | 1986-05-23 | 1989-06-15 | Mettler Instrumente Ag | |
DE3639576A1 (en) * | 1986-11-20 | 1988-06-01 | Siemens Ag | Signal receiver |
DE3924369A1 (en) * | 1989-07-22 | 1991-01-31 | Asea Brown Boveri | METHOD FOR MEASURING AN ELECTRICAL FIELD OR ELECTRICAL VOLTAGE AND DEVICE FOR IMPLEMENTING THE METHOD |
DE4013089A1 (en) * | 1990-04-25 | 1991-10-31 | Bosch Gmbh Robert | IC engine control input voltage error corrected measurement - deriving accurate value of auxiliary parameter and replacement of reference parameter with derived digital ratio |
US5197895A (en) * | 1991-05-10 | 1993-03-30 | Bicore Monitoring Systems | Disposable electro-fluidic connector with data storage |
DE4334766A1 (en) * | 1993-10-12 | 1995-04-13 | Siemens Ag | Electronic measuring device |
DE4410705C2 (en) * | 1994-03-28 | 2000-05-18 | Christof Kaufmann | Measuring device for measuring a physical quantity |
DE4429517C2 (en) * | 1994-08-19 | 1996-08-14 | Man Technologie Gmbh | Device and method for correcting a measurement curve or a signal curve and its or its use for the reconstruction of position errors on railway tracks from geometric relative measurements |
DE19704763B4 (en) * | 1997-02-08 | 2006-04-13 | Plath Gmbh | Method and device for detecting the emission of a high-frequency electromagnetic radiation within the interior of a predominantly poorly permeable to electromagnetic radiation aircraft shell |
DE19849739C2 (en) * | 1998-10-28 | 2001-05-31 | Siemens Audiologische Technik | Adaptive method for correcting the microphones of a directional microphone system in a hearing aid and hearing aid |
DE19959148A1 (en) * | 1999-12-08 | 2001-06-28 | Stiebel Eltron Gmbh & Co Kg | Calibrating device for electrical controller, sets maximum and minimum electrical values, based on which detected signal level is modified |
DE10028448C2 (en) * | 2000-06-13 | 2003-05-15 | Deutsch Zentr Luft & Raumfahrt | Device for the galvanically isolated measurement of an electrical current flowing in a conductor using a Hall element |
DE10041879B4 (en) * | 2000-08-25 | 2006-08-10 | Hella Kgaa Hueck & Co. | Method and device for current measurement |
DE10200369C1 (en) * | 2002-01-08 | 2003-06-05 | Siemens Ag | Correcting 3-phase current measurement signals involves compensating current measurement device in respect of offset or other error during operation of load |
DE10333089B4 (en) * | 2003-07-21 | 2016-12-29 | Infineon Technologies Ag | Current evaluation device and method for producing the same |
DE102004021862B4 (en) * | 2004-05-04 | 2014-08-07 | Infineon Technologies Ag | current Senor |
CN114637183A (en) * | 2020-12-16 | 2022-06-17 | 宁波舜宇车载光学技术有限公司 | Method and system for time-to-digital conversion |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1340072A (en) * | 1971-04-19 | 1973-12-05 | British Aircraft Corp Ltd | Apparatus for signalling the angular displacement of a body about an axis |
DE2317023B2 (en) * | 1973-04-05 | 1980-08-07 | Bodenseewerk Geraetetechnik Gmbh, 7770 Ueberlingen | Circuit arrangement for linearizing the relationship between the output signal of a measuring transducer and a measured variable |
AT353888B (en) * | 1975-11-03 | 1979-12-10 | Siemens Ag | DIGITAL CIRCUIT ARRANGEMENT FOR LINEARIZATION OF NON-LINEAR ENCODER CHARACTERISTICS |
-
1976
- 1976-07-07 DE DE19762630958 patent/DE2630958B2/en not_active Ceased
-
1977
- 1977-05-05 NL NL7704952A patent/NL7704952A/en not_active Application Discontinuation
- 1977-05-11 DK DK205577A patent/DK205577A/en not_active Application Discontinuation
- 1977-06-01 CH CH675477A patent/CH624773A5/en not_active IP Right Cessation
- 1977-06-20 BE BE178581A patent/BE855871A/en not_active IP Right Cessation
- 1977-07-05 IT IT2538877A patent/IT1084976B/en active
- 1977-07-05 GB GB2818977A patent/GB1532362A/en not_active Expired
- 1977-07-06 IE IE140477A patent/IE45354B1/en unknown
- 1977-07-06 LU LU77695A patent/LU77695A1/xx unknown
- 1977-07-06 FR FR7720852A patent/FR2357905A1/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3611689A1 (en) * | 1986-04-08 | 1987-10-15 | Bbc Brown Boveri & Cie | Recording tester having an upstream-connected measurement converter |
DE3611680A1 (en) * | 1986-04-08 | 1987-10-15 | Bbc Brown Boveri & Cie | Method for measurement conversion |
DE3802680A1 (en) * | 1987-01-29 | 1988-08-11 | Fluke Mfg Co John | DEVICE AND METHOD FOR THE INTERNAL CALIBRATION OF AN ELECTRICAL CALIBRATION DEVICE |
DE4035803A1 (en) * | 1990-11-10 | 1992-05-14 | Vdo Schindling | Evaluating analogue voltage signals for controlling IC engine of motor vehicle - using circuit contg. A=D converter, reference voltage source and computer |
US5425361A (en) * | 1991-11-28 | 1995-06-20 | Paul-Gerhard Fenzlein | Apparatus for the determination of medical, electro-chemical measured values relevant to organic or metabolic functions |
WO1999021279A1 (en) | 1997-10-17 | 1999-04-29 | Siemens Aktiengesellschaft | Circuit for regulating the current supplied to an electromechanical component in a motor vehicle |
DE19823706A1 (en) * | 1998-05-27 | 1999-09-23 | Siemens Ag | Measuring apparatus for determining electric parameters of alternating voltage network |
US6313977B1 (en) | 1998-10-16 | 2001-11-06 | Siemens Aktiengesellschaft | Circuit configuration for regulating the current fed to an electromechanical component in a motor vehicle |
US7489122B2 (en) | 2003-09-26 | 2009-02-10 | Siemens Aktiengesellschaft | Method and device for measuring voltage |
Also Published As
Publication number | Publication date |
---|---|
BE855871A (en) | 1977-10-17 |
IT1084976B (en) | 1985-05-28 |
GB1532362A (en) | 1978-11-15 |
IE45354B1 (en) | 1982-08-11 |
DE2630958B2 (en) | 1978-07-27 |
IE45354L (en) | 1978-01-07 |
DK205577A (en) | 1978-01-08 |
CH624773A5 (en) | 1981-08-14 |
LU77695A1 (en) | 1977-10-04 |
FR2357905A1 (en) | 1978-02-03 |
NL7704952A (en) | 1978-01-10 |
FR2357905B1 (en) | 1982-09-24 |
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Legal Events
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