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=upInfo
- 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
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.
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)
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)
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 |
-
1978
- 1978-05-13 DE DE19782821146 patent/DE2821146B2/en not_active Withdrawn
-
1979
- 1979-04-26 FR FR7910686A patent/FR2425628A1/en active Granted
Cited By (2)
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |