FR2425628A1 - Linear dual-slope measurement system - first integrates voltage over given time interval, then integrates according to response curve of measuring pick=up - Google Patents

Linear dual-slope measurement system - first integrates voltage over given time interval, then integrates according to response curve of measuring pick=up

Info

Publication number
FR2425628A1
FR2425628A1 FR7910686A FR7910686A FR2425628A1 FR 2425628 A1 FR2425628 A1 FR 2425628A1 FR 7910686 A FR7910686 A FR 7910686A FR 7910686 A FR7910686 A FR 7910686A FR 2425628 A1 FR2425628 A1 FR 2425628A1
Authority
FR
France
Prior art keywords
integrates
time interval
measurement system
given time
response curve
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
FR7910686A
Other languages
French (fr)
Other versions
FR2425628B3 (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.)
Atmos Fritzsching and Co GmbH
Original Assignee
Atmos Fritzsching and Co GmbH
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 Atmos Fritzsching and Co GmbH filed Critical Atmos Fritzsching and Co GmbH
Publication of FR2425628A1 publication Critical patent/FR2425628A1/en
Application granted granted Critical
Publication of FR2425628B3 publication Critical patent/FR2425628B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/14—Arrangements for modifying the output characteristic, e.g. linearising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G01K7/25—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Nonlinear Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measuring Phase Differences (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

The quantities are converted into an input voltage which is integrated over a specified time interval during a first evaluation phase. In a second evaluation phase a known reference voltage is integrated downwards to the starting point of the first evaluation phase. The digital value to be measured is obtained from the ratio of the two integration times and the reference voltage. Reference voltage depending on the input voltage is used for the downward integration.
FR7910686A 1978-05-13 1979-04-26 Linear dual-slope measurement system - first integrates voltage over given time interval, then integrates according to response curve of measuring pick=up Granted FR2425628A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821146 DE2821146B2 (en) 1978-05-13 1978-05-13 Circuit arrangement for converting the electrical output signal of a non-linear transducer into a value proportional to the measured physical quantity

Publications (2)

Publication Number Publication Date
FR2425628A1 true FR2425628A1 (en) 1979-12-07
FR2425628B3 FR2425628B3 (en) 1982-03-05

Family

ID=6039386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910686A Granted FR2425628A1 (en) 1978-05-13 1979-04-26 Linear dual-slope measurement system - first integrates voltage over given time interval, then integrates according to response curve of measuring pick=up

Country Status (2)

Country Link
DE (1) DE2821146B2 (en)
FR (1) FR2425628A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475253A2 (en) * 1980-02-01 1981-08-07 Ibar Jean Pierre Linearising circuit for nonlinear transducer signals - consists of parallel branches containing combinations of linear circuits
WO1998003837A1 (en) * 1996-07-24 1998-01-29 Nikolai Alexeevich Udovichenko Method and device for measuring physical values using a computer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950455A1 (en) * 1979-12-14 1981-06-19 Siemens AG, 1000 Berlin und 8000 München Physical parameter measurement and digital display - using negative temp. coefficient transducer resistance in high stability bridge circuit
US4590472A (en) * 1982-12-01 1986-05-20 General Electric Company Analog signal conditioner for thermal coupled signals
DE102012102081B3 (en) * 2012-03-13 2013-06-20 Sartorius Weighing Technology Gmbh Integrating A / D converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475253A2 (en) * 1980-02-01 1981-08-07 Ibar Jean Pierre Linearising circuit for nonlinear transducer signals - consists of parallel branches containing combinations of linear circuits
WO1998003837A1 (en) * 1996-07-24 1998-01-29 Nikolai Alexeevich Udovichenko Method and device for measuring physical values using a computer

Also Published As

Publication number Publication date
DE2821146B2 (en) 1980-12-04
FR2425628B3 (en) 1982-03-05
DE2821146A1 (en) 1979-11-15

Similar Documents

Publication Publication Date Title
JPS5551361A (en) Range switching device for electric measuring instrument
FR2425628A1 (en) Linear dual-slope measurement system - first integrates voltage over given time interval, then integrates according to response curve of measuring pick=up
GB1333429A (en) Frequency responsive apparatus
JPS5242167A (en) Semiconductor pressure gauge
JPS56112662A (en) Measuring apparatus for loss of capacity element
JPS5769237A (en) Temperature and humidity sensing device
JPS5313967A (en) Measuring method for characteristic of vibration gauge
JPS5515017A (en) Integrating unit
JPS5386236A (en) Error corrector circuit in digital measuring instrument
JPS5544972A (en) Measuring range changing method and device for pen recorder
SU796775A1 (en) Device for automatic measuring of noise factor
JPS5229777A (en) Small-size measuring instrument
JPS535608A (en) Hunting characteristic measurement device
JPS5373056A (en) Analog-digital converter
JPS5220076A (en) Dew-point measurement device
JPS5422752A (en) Analog-digital converting device
JPS5513588A (en) Sampling circuit
JPS52130675A (en) Measuring apparatus for carrier wave signal power
JPS53125771A (en) Measuring unit for semiconductor
JPS549674A (en) Digital resistant meter
JPS53101966A (en) Ad converter
JPS538176A (en) Am-pm conversion coefficient measuring apparatus
JPS5724121A (en) Accuracy test device for analog-to-digital, digital-to-analog converter
JPS53116183A (en) Digital measuring instrument
STOTS et al. Increasing the accuracy of analog measuring operations by means of digital systems

Legal Events

Date Code Title Description
ST Notification of lapse