FR2329975A1 - Digital linearisation for non-linear analogue signals - produces correction code from comparison of signal with straight-line function - Google Patents

Digital linearisation for non-linear analogue signals - produces correction code from comparison of signal with straight-line function

Info

Publication number
FR2329975A1
FR2329975A1 FR7632755A FR7632755A FR2329975A1 FR 2329975 A1 FR2329975 A1 FR 2329975A1 FR 7632755 A FR7632755 A FR 7632755A FR 7632755 A FR7632755 A FR 7632755A FR 2329975 A1 FR2329975 A1 FR 2329975A1
Authority
FR
France
Prior art keywords
digital
straight
linearisation
correction
gate
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
FR7632755A
Other languages
French (fr)
Other versions
FR2329975B1 (en
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19752549222 external-priority patent/DE2549222C2/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2329975A1 publication Critical patent/FR2329975A1/en
Application granted granted Critical
Publication of FR2329975B1 publication Critical patent/FR2329975B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G01D3/022—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation having an ideal characteristic, map or correction data stored in a digital memory

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Nonlinear Science (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

The digital linearisation circuit provides automatic correction of a non-linear output of a measuring instrument e.g. resistance thermometer. The analogue signal is converted to digital form (20). The output of the converter is connected to an OR-gate and binary counter (23) whose outputs are connected to the address inputs of a coefficient register (24). The individual points on the non-linear characteristic curve are compared with corresponding points on a straight-line reference so that a correction code-word is produced. The correction signals, in complementary-code, pass to a correction register (25) controlled by a clock-pulse (29). The clock-pulse is gated via a flip-flop (26) and AND-gate (27) to the OR-gate at the input of the binary counter. The digitally-corrected output of the first counter (23) can be used to operate a display device.
FR7632755A 1975-11-03 1976-10-29 Digital linearisation for non-linear analogue signals - produces correction code from comparison of signal with straight-line function Granted FR2329975A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752549222 DE2549222C2 (en) 1975-11-03 Digital circuit arrangement for linearizing non-linear encoder characteristics

Publications (2)

Publication Number Publication Date
FR2329975A1 true FR2329975A1 (en) 1977-05-27
FR2329975B1 FR2329975B1 (en) 1982-04-16

Family

ID=5960754

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7632755A Granted FR2329975A1 (en) 1975-11-03 1976-10-29 Digital linearisation for non-linear analogue signals - produces correction code from comparison of signal with straight-line function

Country Status (7)

Country Link
JP (1) JPS5257767A (en)
AT (1) AT353888B (en)
CH (1) CH606995A5 (en)
FR (1) FR2329975A1 (en)
IT (1) IT1075887B (en)
NL (1) NL7612180A (en)
SE (1) SE410224B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357905A1 (en) * 1976-07-07 1978-02-03 Heliowatt Werke ERROR COMPENSATION PROCESS, IN PARTICULAR FOR MEASURING EQUIPMENT TRANSFORMING ANALOGUE QUANTITIES INTO DIGITAL VALUES
FR2379800A1 (en) * 1977-02-08 1978-09-01 Zumbach Electronic Ag METHOD OF MEASURING ABSOLUTE VALUES BY MEANS OF A MEASURING SENSOR WITH NON-LINEAR OPERATION AND OF A MEASURING DEVICE FOR CARRYING OUT THIS PROCESS
FR2381283A1 (en) * 1977-02-16 1978-09-15 Aga Ab LINEAR OR ANGULAR LENGTH MEASUREMENT DEVICE
FR2509851A1 (en) * 1981-07-17 1983-01-21 Tesa Sa ELECTRONIC MEASUREMENT SENSOR

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403850B (en) * 1990-08-10 1998-05-25 Mecanotronic Produktion Von El Calibration method
JP2008023272A (en) * 2006-07-25 2008-02-07 Naohiro Kimata Association cards

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855466A (en) * 1973-04-05 1974-12-17 Bodenseewerk Geraetetech Circuit arrangement for linearization of the characteristic of a sensor
DE2360011A1 (en) * 1973-06-05 1975-01-02 Rationalisierung Konfekt Veb METHOD OF TEMPERATURE MEASUREMENT USING A SEMICONDUCTOR RESISTOR
FR2239721A1 (en) * 1973-07-31 1975-02-28 Solartron Electronic Group
DE2404696A1 (en) * 1974-02-01 1975-08-07 Messerschmitt Boelkow Blohm Circuitry to linearise characteristic of digital pick-up - uses output variable as pulse count proportional to measured value

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855466A (en) * 1973-04-05 1974-12-17 Bodenseewerk Geraetetech Circuit arrangement for linearization of the characteristic of a sensor
DE2360011A1 (en) * 1973-06-05 1975-01-02 Rationalisierung Konfekt Veb METHOD OF TEMPERATURE MEASUREMENT USING A SEMICONDUCTOR RESISTOR
FR2239721A1 (en) * 1973-07-31 1975-02-28 Solartron Electronic Group
DE2404696A1 (en) * 1974-02-01 1975-08-07 Messerschmitt Boelkow Blohm Circuitry to linearise characteristic of digital pick-up - uses output variable as pulse count proportional to measured value

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357905A1 (en) * 1976-07-07 1978-02-03 Heliowatt Werke ERROR COMPENSATION PROCESS, IN PARTICULAR FOR MEASURING EQUIPMENT TRANSFORMING ANALOGUE QUANTITIES INTO DIGITAL VALUES
FR2379800A1 (en) * 1977-02-08 1978-09-01 Zumbach Electronic Ag METHOD OF MEASURING ABSOLUTE VALUES BY MEANS OF A MEASURING SENSOR WITH NON-LINEAR OPERATION AND OF A MEASURING DEVICE FOR CARRYING OUT THIS PROCESS
FR2381283A1 (en) * 1977-02-16 1978-09-15 Aga Ab LINEAR OR ANGULAR LENGTH MEASUREMENT DEVICE
FR2509851A1 (en) * 1981-07-17 1983-01-21 Tesa Sa ELECTRONIC MEASUREMENT SENSOR

Also Published As

Publication number Publication date
JPS5257767A (en) 1977-05-12
IT1075887B (en) 1985-04-22
DE2549222B1 (en) 1977-01-20
AT353888B (en) 1979-12-10
SE7611637L (en) 1977-05-04
NL7612180A (en) 1977-05-05
CH606995A5 (en) 1978-11-30
SE410224B (en) 1979-10-01
ATA773476A (en) 1979-05-15
FR2329975B1 (en) 1982-04-16

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Legal Events

Date Code Title Description
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