CN102495224A - Method for multiplying frequency of power supply - Google Patents
Method for multiplying frequency of power supply Download PDFInfo
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- CN102495224A CN102495224A CN2011104008189A CN201110400818A CN102495224A CN 102495224 A CN102495224 A CN 102495224A CN 2011104008189 A CN2011104008189 A CN 2011104008189A CN 201110400818 A CN201110400818 A CN 201110400818A CN 102495224 A CN102495224 A CN 102495224A
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Abstract
The invention discloses a method for multiplying the frequency of a power supply. The method comprises the following steps of: converting acquired alternating-current voltage of the power supply into a pulse signal with the same frequency; defining the frequency of the pulse signal as a reference frequency; and converting the reference frequency into a new frequency of which the stability is the same as that of the reference frequency by a phase locked loop circuit. The method for multiplying the frequency of the power supply has the advantage of simple design, convenience for measurement, precision and reliability.
Description
Technical field
The present invention relates to a kind of method of tachometric survey, relate in particular to a kind of power supply frequency-doubling method.
Background technology
At present a lot of for the method for tachometric survey, common have methods such as mechanical rpm tachometry, optics rpm tachometry.Machinery rpm tachometric survey is the most ancient rpm rotating speed measurement method.It is through mechanical measurement sensor acquisition data, and the electronic analysis through instrument internal just can obtain measurement result again.This measuring method depends on contact pressure in measuring process, its maximum shortcoming is that the loading motion is discontinuous.Optics rpm tachometry is a kind of tachometry that adopts principle of reflection.It is the light (infrared ray) that utilizes surveying instrument to launch, and after being fixed on the reflection bar reflection on the target to be measured, promptly carries relevant rotary speed information.After surveying instrument receives reflection wave, can obtain rotating speed through handling.Though this measuring method is more advanced than mechanical rpm mensuration, this measurement need be guaranteed measuring reliability and measuring accuracy when considering factors such as radiation interference, electromagnetic interference (EMI) and Conduction Interference.
Summary of the invention
The object of the present invention is to provide a kind of power supply frequency-doubling method, on the basis of optics rpm tachometry, proposed a kind of improving one's methods, introduced and utilized phaselocked loop to realize the circuit design scheme that motor speed is measured.The degree of stability and the reference frequency of the new frequency that this scheme is changed out are suitable, error free frequency-tracking.Simultaneously, the frequency signal of the method output can be used as the input signal of most controller frequency detecting, and is compatible high.
Technical scheme of the present invention is: the pulse signal that the alternating voltage of the power supply of gathering is converted to same frequency; The frequency of this pulse signal is defined as reference frequency, converts this reference frequency to the new frequency suitable with the reference frequency degree of stability via phase-locked loop circuit.
The invention has the advantages that: this power supply frequency-doubling method simplicity of design, convenient measurement, accurately reliable.
Description of drawings
Fig. 1 is the phase-locked loop circuit schematic diagram.
Embodiment
The present invention is achieved in that the AC signal of power supply as input signal, produces the pulse signal with reference frequency by the reference frequency generative circuit, and the pulse signal frequency of this moment and the frequency of input signal are consistent; Pulse signal with reference frequency gets into phase-locked loop circuit, and reference frequency is transformed into new frequency signal, and the degree of stability and the reference frequency of new frequency are suitable.
The phase-locked loop circuit schematic diagram is seen Fig. 1, and reference frequency signal IN inserts 14 pin of chip IC 1, and No. 3 pin of IC1 link to each other with No. 2 pin of chip IC 2; No. 9 pin of IC1 link to each other with resistance R 12 with resistance R 9, and the other end of resistance R 9 links to each other with resistance R 8, R8 other end ground connection; Capacitor C 2 is parallelly connected with R8, and the R12 other end links to each other with No. 13 pin of IC1, and capacitor C 11 1 ends connect No. 6 pin of IC1; The other end connects No. 7 pin of IC1, and resistance R 10 1 ends connect No. 11 pin of IC1, and the other end links to each other with ground with No. 5 pin of IC1; Resistance R 11 links to each other with No. 12 pin of IC1, and No. 4 pin of IC1 link to each other with No. 10 pin of chip IC 2, simultaneously as new frequency signal output point OUT; No. 8 pin of IC1 all link to each other with ground with No. 8 pin of IC2; No. 16 pin of IC1 all link to each other with direct supply VCC with No. 16 pin of IC2, and wherein the model of IC1 is CD4046, and the model of IC2 is CD4040.
Claims (2)
1. power supply frequency-doubling method; It is characterized in that the alternating voltage with the power supply of gathering converts the pulse signal of same frequency to; The frequency of this pulse signal is defined as reference frequency, converts this reference frequency to the new frequency suitable with the reference frequency degree of stability via phase-locked loop circuit.
2. power supply frequency-doubling method according to claim 1 is characterized in that described phase-locked loop circuit principle is: reference frequency signal IN inserts 14 pin of chip IC 1, and No. 3 pin of IC1 link to each other with No. 2 pin of chip IC 2; No. 9 pin of IC1 link to each other with resistance R 12 with resistance R 9, and the other end of resistance R 9 links to each other with resistance R 8, R8 other end ground connection; Capacitor C 2 is parallelly connected with R8, and the R12 other end links to each other with No. 13 pin of IC1, and capacitor C 11 1 ends connect No. 6 pin of IC1; The other end connects No. 7 pin of IC1, and resistance R 10 1 ends connect No. 11 pin of IC1, and the other end links to each other with ground with No. 5 pin of IC1; Resistance R 11 links to each other with No. 12 pin of IC1, and No. 4 pin of IC1 link to each other with No. 10 pin of chip IC 2, simultaneously as new frequency signal output point OUT; No. 8 pin of IC1 all link to each other with ground with No. 8 pin of IC2; No. 16 pin of IC1 all link to each other with direct supply VCC with No. 16 pin of IC2, and wherein the model of IC1 is CD4046, and the model of IC2 is CD4040.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104008189A CN102495224A (en) | 2011-12-06 | 2011-12-06 | Method for multiplying frequency of power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104008189A CN102495224A (en) | 2011-12-06 | 2011-12-06 | Method for multiplying frequency of power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102495224A true CN102495224A (en) | 2012-06-13 |
Family
ID=46187065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104008189A Pending CN102495224A (en) | 2011-12-06 | 2011-12-06 | Method for multiplying frequency of power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102495224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403726A (en) * | 2015-12-17 | 2016-03-16 | 滁州市博创电气有限公司 | Pulse velocity measurement module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213342Y (en) * | 1994-03-31 | 1995-11-22 | 杨东明 | Digital frequency indicator for doubling circuit made of phase locked loop |
| CN2257018Y (en) * | 1995-06-26 | 1997-06-25 | 张宛旭 | Digital electric generator velometer |
-
2011
- 2011-12-06 CN CN2011104008189A patent/CN102495224A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213342Y (en) * | 1994-03-31 | 1995-11-22 | 杨东明 | Digital frequency indicator for doubling circuit made of phase locked loop |
| CN2257018Y (en) * | 1995-06-26 | 1997-06-25 | 张宛旭 | Digital electric generator velometer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403726A (en) * | 2015-12-17 | 2016-03-16 | 滁州市博创电气有限公司 | Pulse velocity measurement module |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120613 |