GB1115998A - - Google Patents
Info
- Publication number
- GB1115998A GB1115998A GB1115998DA GB1115998A GB 1115998 A GB1115998 A GB 1115998A GB 1115998D A GB1115998D A GB 1115998DA GB 1115998 A GB1115998 A GB 1115998A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- stable
- zero
- value
- counter
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/50—Analogue/digital converters with intermediate conversion to time interval
- H03M1/504—Analogue/digital converters with intermediate conversion to time interval using pulse width modulation
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
1,115,998. Analogue-to-digital converters. COMPAGNIE DES COMPTEURS. 22 Sept., 1965 [28 Sept., 1964], No. 40472/65. Heading G4H. In an analogue-to-digital converter of the kind which produces a timed pulse representing the input analogue and another timed pulse representing the zero value, there are two bi-stables one of which is set by the input value pulse or the other, by the zero pulse, whichever comes first, the bi-stable set preventing the other becoming set. The signals are also each connected to reset the other bi-stable so that the bi-stable that becomes set opens a corresponding gate allowing pulses to pass to a counter. In the form of Fig. 2, temperature is measured by a resistive transducer 7 connected in a bridge 5. The resistor 7 is balanced by variable resistor 8 driven through its whole range by motor 13. A switch 19 gives a pulse Z at the moment resistor 8 corresponds to a temperature of 0‹ C. If the temperature is positive the bridge balances before the zero pulse Z occurs. Detector 6 produces the balance pulse M which sets bi-stable 12 to open gate 22 to allow pulses from alternator 25 and pulse shaper 26 to pass to counter 2. The zero pulse Z resets bi-stable 12 and the counter 2 indicates the value. A bi-stable 35 is set by whichever of the bi-stables 11 and 12 is first set to indicate the sign of the value digitized. In another form the position of a shaft is sensed by a rotating disc having a photo-cell to detect the needle. This corresponds to the timed pulse M. The zero pulse Z is produced as before by a switch.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR989593A FR1420434A (en) | 1964-09-28 | 1964-09-28 | Analog-to-digital conversion device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1115998A true GB1115998A (en) |
Family
ID=8839241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1115998D Active GB1115998A (en) | 1964-09-28 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1548601A1 (en) |
FR (1) | FR1420434A (en) |
GB (1) | GB1115998A (en) |
-
0
- GB GB1115998D patent/GB1115998A/en active Active
-
1964
- 1964-09-28 FR FR989593A patent/FR1420434A/en not_active Expired
-
1965
- 1965-09-25 DE DE19651548601 patent/DE1548601A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1548601A1 (en) | 1970-03-05 |
FR1420434A (en) | 1965-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES427601A1 (en) | Electronic torque wrench | |
GB1014727A (en) | Analogue to digital transducers | |
GB1085665A (en) | Device for measurement of relative displacements of two parts | |
GB1508422A (en) | Phasemeters | |
GB1459448A (en) | Inhibition circuits for anemometers | |
GB1489491A (en) | Frequency or speed determining means | |
GB1245954A (en) | Device for the detection of the rotational motion of a shaft | |
SE323814B (en) | ||
GB1220094A (en) | Improvements in and relating to optical-electrical angle-measuring devices | |
GB1099928A (en) | Speed detection | |
GB1370955A (en) | High speed digital tracking system | |
GB1115998A (en) | ||
GB1185660A (en) | Determining the Fractional Change in Period of an Oscillation | |
ES401389A2 (en) | Change of current or voltage acutated protecting relay | |
GB1362132A (en) | Turn rate indicators | |
GB1278774A (en) | Improvements in or relating to fatigue testing | |
GB1404133A (en) | Anemometers | |
ES357614A1 (en) | Differentiators | |
GB1131538A (en) | An electrical circuit for use in the measurement of acceleration | |
SU673921A1 (en) | Digital low-velocity measuring device | |
TER-ARUTIUNIANTS | Forced damping in a parametric system | |
JPS57182173A (en) | Frequency-voltage converter for digital rotating meter | |
GB1204627A (en) | Improvements in or relating to the measurements of vibration of rotating parts | |
SU828168A1 (en) | Device for determining the medium of time interval | |
SU556476A1 (en) | Angular displacement transducer to code |