GB1243122A - A device for digital measuring of pulse rate - Google Patents
A device for digital measuring of pulse rateInfo
- Publication number
- GB1243122A GB1243122A GB40729/69A GB4072969A GB1243122A GB 1243122 A GB1243122 A GB 1243122A GB 40729/69 A GB40729/69 A GB 40729/69A GB 4072969 A GB4072969 A GB 4072969A GB 1243122 A GB1243122 A GB 1243122A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- frequency
- pulses
- input
- order
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
1,243,122. Frequency measuring. TESLA NARODNI PODNIK. 14 Aug., 1969, No. 40729/69. Heading G4H. In a digital frequency measuring system of the type in which a difference signal r (Fig. 5) is derived by a difference circuit 1 from a feedback frequency signal p and the input frequency signal n, the time intervals between pulses of the difference signal are measured, the reciprocals of these intervals being digitally derived in a circuit 3 and accumulated (additively or subtractively) in a circuit 4 controlling a pulse generator 5 delivering the feedback signal p. In the stable condition the state of circuit 4 represents the input. The time intervals between pulses may be determined by counting pulses of known frequency f 0 . A single order counting stage may be used, which when full alters the frequency f 0 by one order. The order of the frequency then determines in which order of the adding circuit the reciprocal of the counter value should be accumulated. If the distribution of the input pulses is not regular, scanning circuit (6, Fig. 6, not shown) may be connected between the input and the differentiating circuit 1 and, if required, between the output of the pulse generator 5 and the circuit 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40729/69A GB1243122A (en) | 1969-08-14 | 1969-08-14 | A device for digital measuring of pulse rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40729/69A GB1243122A (en) | 1969-08-14 | 1969-08-14 | A device for digital measuring of pulse rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1243122A true GB1243122A (en) | 1971-08-18 |
Family
ID=10416329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40729/69A Expired GB1243122A (en) | 1969-08-14 | 1969-08-14 | A device for digital measuring of pulse rate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1243122A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2364207A1 (en) * | 1972-12-26 | 1974-06-27 | Rockwell International Corp | DIGITAL CIRCUIT ARRANGEMENT FOR DETERMINING THE TIME CHANGE IN THE FREQUENCY OF PULSES |
| DE2941697A1 (en) * | 1979-10-15 | 1981-04-30 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen | Measuring frequency of pulse series by summation - using defined time increments and comparison with summation limit value |
-
1969
- 1969-08-14 GB GB40729/69A patent/GB1243122A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2364207A1 (en) * | 1972-12-26 | 1974-06-27 | Rockwell International Corp | DIGITAL CIRCUIT ARRANGEMENT FOR DETERMINING THE TIME CHANGE IN THE FREQUENCY OF PULSES |
| DE2941697A1 (en) * | 1979-10-15 | 1981-04-30 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen | Measuring frequency of pulse series by summation - using defined time increments and comparison with summation limit value |
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