JPS5748664A - Pulse frequency detector - Google Patents
Pulse frequency detectorInfo
- Publication number
- JPS5748664A JPS5748664A JP12294280A JP12294280A JPS5748664A JP S5748664 A JPS5748664 A JP S5748664A JP 12294280 A JP12294280 A JP 12294280A JP 12294280 A JP12294280 A JP 12294280A JP S5748664 A JPS5748664 A JP S5748664A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- pulse
- measured
- sampling
- 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.)
- Granted
Links
- 238000005070 sampling Methods 0.000 abstract 5
- 238000005259 measurement Methods 0.000 abstract 2
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
PURPOSE:To improve the accuracy of measurement without lowering the speed of response by detecting pulse frequency from the number of the pulses to be measured of a sampling period and the time intervals of the samples to be measured and sampling pulses. CONSTITUTION:The reference clocks P from a pulse generator 1 are converted to sample pulses by a frequency dividing counter 3, and these pulses are counted with a counter 4. On the other hand, the pulses to be measured from a pulse generator 2 are counted by a counter 5, and are applied as reset pulses to the counter 4. The count values of the counters 4, 5 are latched in buffer counters 7, 9, 10, and an arithmetic unit 8 makes operation by using the number N of the pulses to be measured, the time T2 from the pulse to be measured just before until the sampling pulse and the time T'2 from the pulse to be measured just before at the previous sampling until the sampling pulse, and outputs a pulse frequency F. Thereby, the accuracy of measurement is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12294280A JPS5748664A (en) | 1980-09-06 | 1980-09-06 | Pulse frequency detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12294280A JPS5748664A (en) | 1980-09-06 | 1980-09-06 | Pulse frequency detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5748664A true JPS5748664A (en) | 1982-03-20 |
| JPS6319831B2 JPS6319831B2 (en) | 1988-04-25 |
Family
ID=14848424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12294280A Granted JPS5748664A (en) | 1980-09-06 | 1980-09-06 | Pulse frequency detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5748664A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848868A (en) * | 1981-09-18 | 1983-03-22 | Fuji Electric Co Ltd | Pulse frequency measurement method |
| JPS58213254A (en) * | 1982-03-22 | 1983-12-12 | ザ・ベンデイツクス・コ−ポレ−シヨン | Method and device for measuring speed of rotatory body |
| JPS5913957A (en) * | 1982-07-15 | 1984-01-24 | Fanuc Ltd | Speed detecting circuit |
| JPS5985963A (en) * | 1982-04-15 | 1984-05-18 | アルフレツド・テヴエス・ゲ−エムベ−ハ− | Method and device for generating a numerical value proportional to the pulse frequency of a pulse signal train to be measured |
-
1980
- 1980-09-06 JP JP12294280A patent/JPS5748664A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848868A (en) * | 1981-09-18 | 1983-03-22 | Fuji Electric Co Ltd | Pulse frequency measurement method |
| JPS58213254A (en) * | 1982-03-22 | 1983-12-12 | ザ・ベンデイツクス・コ−ポレ−シヨン | Method and device for measuring speed of rotatory body |
| JPS5985963A (en) * | 1982-04-15 | 1984-05-18 | アルフレツド・テヴエス・ゲ−エムベ−ハ− | Method and device for generating a numerical value proportional to the pulse frequency of a pulse signal train to be measured |
| JPS5913957A (en) * | 1982-07-15 | 1984-01-24 | Fanuc Ltd | Speed detecting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6319831B2 (en) | 1988-04-25 |
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