GB2009545A - Analogue to digital converter with compensation for variations in initial value of input analogue - Google Patents
Analogue to digital converter with compensation for variations in initial value of input analogueInfo
- Publication number
- GB2009545A GB2009545A GB7846299A GB7846299A GB2009545A GB 2009545 A GB2009545 A GB 2009545A GB 7846299 A GB7846299 A GB 7846299A GB 7846299 A GB7846299 A GB 7846299A GB 2009545 A GB2009545 A GB 2009545A
- Authority
- GB
- United Kingdom
- Prior art keywords
- analogue
- digital converter
- counter
- compensation
- variations
- 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
- 238000005259 measurement Methods 0.000 abstract 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
-
- 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
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
- G01D1/12—Measuring arrangements giving results other than momentary value of variable, of general application giving a maximum or minimum of a value
-
- 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
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
- G01D1/16—Measuring arrangements giving results other than momentary value of variable, of general application giving a value which is a function of two or more values, e.g. product or ratio
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
For providing a digital output from a displacement transducer operating in a measurement cycle in which the transducer may not always return to the same initial position at the end of each cycle, giving rise to a zero error, the apparatus described has an analogue to digital converter 32, a first counter 38 for storing the digital value of the initial position of the transducer, a latch 40 for storing the measurement position value, a comparator 42 for comparing the two values, and a source of clock pulses 50 to index the counter 38 until both values are equal, a second counter 54 counting the number of clock pulses required and providing a digital output of the true measurement value. <IMAGE>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7846299A GB2009545B (en) | 1977-12-01 | 1978-11-28 | Apparatus and method providing adigital output from a displacement transducer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5005277 | 1977-12-01 | ||
| GB7846299A GB2009545B (en) | 1977-12-01 | 1978-11-28 | Apparatus and method providing adigital output from a displacement transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2009545A true GB2009545A (en) | 1979-06-13 |
| GB2009545B GB2009545B (en) | 1982-09-02 |
Family
ID=26266608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7846299A Expired GB2009545B (en) | 1977-12-01 | 1978-11-28 | Apparatus and method providing adigital output from a displacement transducer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2009545B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126867A2 (en) * | 1983-04-02 | 1984-12-05 | Robert Bosch Gmbh | Device for zeroing signal sources, especially sensor arrangements |
| US5065613A (en) * | 1989-12-05 | 1991-11-19 | Rosemount Gmbh & Co. | Method for the direct presentation of a differential measured quantity in terms of its correct physical unit |
-
1978
- 1978-11-28 GB GB7846299A patent/GB2009545B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126867A2 (en) * | 1983-04-02 | 1984-12-05 | Robert Bosch Gmbh | Device for zeroing signal sources, especially sensor arrangements |
| EP0126867A3 (en) * | 1983-04-02 | 1987-10-07 | Robert Bosch Gmbh | Device for zeroing signal sources, especially sensor arrangements |
| US5065613A (en) * | 1989-12-05 | 1991-11-19 | Rosemount Gmbh & Co. | Method for the direct presentation of a differential measured quantity in terms of its correct physical unit |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2009545B (en) | 1982-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |