CN112929008A - Method and system for generating waveform signal with specified amplitude - Google Patents
Method and system for generating waveform signal with specified amplitude Download PDFInfo
- Publication number
- CN112929008A CN112929008A CN202110098089.XA CN202110098089A CN112929008A CN 112929008 A CN112929008 A CN 112929008A CN 202110098089 A CN202110098089 A CN 202110098089A CN 112929008 A CN112929008 A CN 112929008A
- Authority
- CN
- China
- Prior art keywords
- amplitude
- signal
- voltage
- waveform signal
- multiplier
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000012067 mathematical method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000013139 quantization Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Manipulation Of Pulses (AREA)
Abstract
The invention discloses a method for generating a waveform signal with a specified amplitude, which adopts a voltage divider and a voltage multiplier, inputs the waveform signal with any amplitude and a voltage signal corresponding to the amplitude of the waveform signal into the voltage divider, takes the output of the voltage divider as one input of the voltage multiplier, and takes the voltage signal corresponding to the specified amplitude as the other input of the voltage multiplier, thereby obtaining the corresponding waveform signal with the amplitude restored to the specified amplitude from the output of the voltage multiplier. The invention can be used for amplitude recovery when amplitude is lost in the waveform conversion process, is particularly suitable for converting square waves into triangular waves and then converting the triangular waves into sine waves, can obtain smooth and continuous sine wave analog signals without phase noise and quantization errors, and is suitable for manufacturing signal sources with extremely low frequency.
Description
Technical Field
The invention relates to the field of waveform signal conversion methods, in particular to a method and a system for generating a waveform signal with a specified amplitude.
Background
At present, square waves (or pulse waves) with different frequencies and the same frequency stability as a reference frequency are obtained by using a counter, pulse frequency division and frequency multiplication. In order to obtain sine waves with different frequencies and the same Frequency stability as the reference Frequency, a direct Digital Frequency Synthesis (DDS) method is mostly used at the low and medium frequencies, and a phase-locked Frequency Synthesis (PLL Frequency Synthesis) method is mostly used at the high Frequency. However, for sine waves with extremely low frequencies (<3Hz), such as 0.001Hz or lower, simulation methods such as power series polynomial method and curve approximation method are used, i.e. square waves are converted into triangular waves, and then the triangular waves are converted into sine waves by mathematical methods. In the prior art, when a very low frequency sine wave is generated, since the amplitude of the obtained triangular wave changes when the frequency changes in the process of converting the square wave into the triangular wave, that is, the amplitude is lost in the process of converting the square wave into the triangular wave, the obtained sine wave is distorted due to the loss of the amplitude when the triangular wave is converted into the sine wave by using a mathematical method.
Disclosure of Invention
The invention aims to provide a method and a system for generating a waveform signal with a specified amplitude, which are used for solving the problem that the finally obtained target waveform is distorted due to amplitude loss in the process of converting the existing waveform signal.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for generating a waveform signal with a specified amplitude is characterized in that a voltage divider and a voltage multiplier are adopted, the waveform signal with any amplitude is used as one input signal of the voltage divider, and a voltage signal with a constant voltage value equal to the amplitude of the waveform signal is used as the other input signal of the voltage divider; simultaneously, the output of the voltage divider is used as one input signal of a voltage multiplier, and a voltage signal with a constant voltage value equal to a specified amplitude value is used as the other input signal of the voltage multiplier; therefore, an output waveform signal is obtained at the output end of the voltage multiplier, the waveform of the output waveform signal is the same as that of the waveform signal input by the voltage multiplier, and the amplitude of the output waveform signal is a specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that the waveform signal with any amplitude input by the voltage divider is a sine wave, and the output waveform signal obtained at the output end of the voltage multiplier is the sine wave with the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that the waveform signal with any amplitude input by the voltage divider is a square wave, and the output waveform signal obtained at the output end of the voltage multiplier is a square wave with the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that a square wave signal with the specified amplitude is converted into a triangular wave signal, the obtained triangular wave signal is used as an input signal of a voltage divider, a voltage signal with a voltage value which is constant and equal to the amplitude of the triangular wave signal is used as another input signal of the voltage divider, the output of the voltage divider is used as an input signal of a voltage multiplier, a voltage signal with a voltage value which is constant and equal to the specified amplitude is used as another input signal of the voltage multiplier, and therefore the triangular wave signal with the specified amplitude is obtained at the output end of the voltage multiplier; and finally, performing mathematical processing on the triangular wave signal with the amplitude of the specified amplitude to obtain a sine wave signal with the amplitude of the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that the waveform signal with any amplitude input by the voltage divider is a triangular wave, and an output waveform signal obtained at the output end of the voltage multiplier is the triangular wave with the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that a triangular wave signal with the specified amplitude is processed by a mathematical method to obtain a sine wave signal with the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that the mathematical method is a power series polynomial method, or a curve approximation method, or a broken line method.
The method for generating the waveform signal with the specified amplitude is characterized in that the waveform signal with any amplitude input by the voltage divider is a sawtooth wave, and an output waveform signal obtained at the output end of the voltage multiplier is the sawtooth wave with the specified amplitude.
The method for generating the waveform signal with the specified amplitude is characterized in that the waveform signal with any amplitude input by the voltage divider is a modulated wave, and an output waveform signal obtained at the output end of the voltage multiplier is the modulated wave with the amplitude of the specified amplitude.
The system for generating the waveform signal with the specified amplitude is characterized by comprising a voltage divider and a voltage multiplier, wherein the voltage divider is composed of a general integrated analog multiplier and an operational amplifier, the voltage multiplier is a general integrated analog multiplier, and the output end of the voltage divider is connected with one input end of the voltage multiplier.
The invention provides a method which can convert waveform signals with any amplitude (in a practical range) into corresponding waveform signals with required specified amplitudes. By the method, when amplitude loss occurs in the waveform signal conversion process, the amplitude of the waveform signal can be restored to the specified amplitude, so that the amplitude loss is reduced as much as possible in the waveform conversion process, and the problem of final target waveform signal distortion is solved. The invention is especially suitable for converting square wave signals into sine wave signals, when amplitude loss occurs in the process of converting the square wave signals into triangular wave signals, the amplitude of the obtained triangular wave signals can be restored to the amplitude of the original square wave signals by the method, and then the triangular wave signals are converted into the sine wave signals by a mathematical method, so that the amplitude loss of the obtained sine wave signals is minimum, and the sine wave signals finally converted from the square wave signals are more vivid.
Drawings
FIG. 1 is a schematic diagram of the method of the present invention.
Fig. 2 is a schematic diagram of the invention for converting square wave to sine wave.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The invention adopts a voltage divider and a voltage multiplier, takes a waveform signal with any amplitude as an input signal of the voltage divider, and takes a voltage signal with a constant voltage value equal to the amplitude of the waveform signal as another input signal of the voltage divider; meanwhile, the output of the voltage divider is used as one input signal of the voltage multiplier, and a voltage signal with a constant voltage value equal to a specified amplitude value is used as the other input signal of the voltage multiplier; therefore, an output waveform signal is obtained at the output end of the voltage multiplier, the waveform of the output waveform signal is the same as that of the waveform signal input by the voltage multiplier, and the amplitude of the output waveform signal is a specified amplitude.
Fig. 1 shows a schematic diagram of the present invention. In fig. 1, U1 is a voltage divider and U2 is a voltage multiplier. v. ofiThe waveform voltage signal with any amplitude input to the input terminal X of the voltage divider U1 may be a sinusoidal signal, a square wave, a triangular wave, a sawtooth wave, or other waveforms such as a modulated wave. Vip(VipNot equal to 0) is the voltage value and viConstant voltage signals of the same amplitude, VipTo the other input Y of the voltage divider U1. The output end of the voltage divider U1 is connected with the input end X of the voltage multiplier U2, VpresetIs a constant voltage signal, V, of the same voltage value as the specified amplitudepresetTo the other input terminal Y of the voltage multiplier U2. v. of2Is the output waveform signal of the voltage multiplier U2.
Suppose vi＝Vipcos (ω t), then:
v2＝v1·Vpreset＝Vpresetcos(ωt) (2)，
in the formulas (1) and (2), omega is angular frequency and the unit is radian; t is time in seconds.
As shown by the formula (2), v2Waveform sum v ofiHas the same waveform, but the amplitude becomesVpresetIs determined. That is, regardless of viIs of magnitude, after the circuit of fig. 1 is transformed, the magnitudes are all VpresetWhile the waveform is unchanged.
Therefore, the method of the invention can respectively and correspondingly process the sine signal, the square wave, the triangular wave, the sawtooth wave and the modulated wave with any amplitude into the corresponding waveform signals with the specified amplitude. When the method is used for converting the prototype waveform signal into the target waveform signal, if the amplitude of the target waveform signal obtained after conversion is lost compared with the prototype waveform signal, the method can restore the amplitude of the target waveform signal to the amplitude of the prototype waveform signal.
The invention can be used for amplitude recovery when square wave signals are converted into sine wave signals, or can be used for direct recovery of triangular wave signals with lost amplitude. As shown in fig. 2, in fig. 2:
the frequency programmable square wave generator consists of a quartz crystal multivibrator, a presettable counter and a frequency divider and is used for generating square wave signals, the frequency stability of the generated square wave signals is the same as that of the quartz resonator, and the generator can also be used for generating triangular wave signals.
The square/triangular integrator is an integrated integrator realized by an integrated operational amplifier.
The peak detection section may be generally implemented with a sample holder, and the peak detection requiring higher accuracy may be implemented with a tracking type a/D for detecting the amplitude of a square wave signal or a triangular wave signal.
The voltage divider U1 may be implemented by a general purpose integrated analog multiplier and operational amplifier. The voltage multiplier U2 is a general purpose integrated analog multiplier.
Sending a square wave or triangular wave signal generated by a frequency programmable square wave generator to an input end X of a voltage divider U1, detecting to obtain the amplitude of the square wave or triangular wave signal, inputting a voltage signal with the voltage value constant equal to the amplitude to an input end Y of a voltage divider U1, and generating a signal v at an output end of the voltage divider U11Is fed to the input X of a voltage multiplier U2 while a voltage signal V having a voltage value constantly equal to a given amplitude is suppliedpresetThe voltage is sent to the input end Y of the voltage multiplier U2, and finally, a square wave or triangular wave signal V with the specified amplitude is output from the output end of the voltage multiplier U2out。
If the output signal V isoutThe square wave signal is converted into a triangular wave signal, then the amplitude value of the obtained triangular wave signal is restored by adopting the method of the invention, and then the triangular wave signal after the amplitude value is restored is processed by adopting a power series polynomial method, a curve approximation method or a broken line method triangular wave/sine wave, so that the sine wave signal with the specified amplitude value is obtained.
If the output signal V isoutThe triangular wave signal is processed by directly adopting a power series polynomial method, a curve approximation method or a broken line method triangular wave/sine wave, so that the sine wave signal with the specified amplitude is obtained.
The amplitude of the triangular wave generated by the method provided by the invention does not change along with the change of the frequency, namely the frequency-programmable constant-amplitude triangular wave, so that the smooth and continuous sine wave analog signal without phase noise and quantization error can be conveniently obtained by utilizing the mature technology of converting the existing triangular wave into the sine wave.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (10)
1. A method for generating a waveform signal with a specified amplitude is characterized in that a voltage divider and a voltage multiplier are adopted, the waveform signal with any amplitude is used as one input signal of the voltage divider, and a voltage signal with a constant voltage value equal to the amplitude of the waveform signal is used as the other input signal of the voltage divider; simultaneously, the output of the voltage divider is used as one input signal of a voltage multiplier, and a voltage signal with a constant voltage value equal to a specified amplitude value is used as the other input signal of the voltage multiplier; therefore, an output waveform signal is obtained at the output end of the voltage multiplier, the waveform of the output waveform signal is the same as that of the waveform signal input by the voltage multiplier, and the amplitude of the output waveform signal is a specified amplitude.
2. The method as claimed in claim 1, wherein the waveform signal of any amplitude inputted from the voltage divider is a sine wave, and the output waveform signal obtained at the output of the voltage multiplier is a sine wave of a specified amplitude.
3. The method as claimed in claim 1, wherein the waveform signal with any amplitude inputted from the voltage divider is a square wave, and the output waveform signal obtained at the output terminal of the voltage multiplier is a square wave with an amplitude of a specified amplitude.
4. The method according to claim 3, wherein the square wave signal with the specified amplitude is converted into a triangular wave signal, the triangular wave signal is used as an input signal of the voltage divider, a voltage signal with a constant voltage value equal to the amplitude of the triangular wave signal is used as another input signal of the voltage divider, an output of the voltage divider is used as an input signal of the voltage multiplier, and a voltage signal with a constant voltage value equal to the specified amplitude is used as another input signal of the voltage multiplier, thereby obtaining the triangular wave signal with the specified amplitude at the output end of the voltage multiplier; and finally, performing mathematical processing on the triangular wave signal with the amplitude of the specified amplitude to obtain a sine wave signal with the amplitude of the specified amplitude.
5. The method as claimed in claim 1, wherein the waveform signal with any amplitude inputted from the voltage divider is a triangular wave, and the output waveform signal obtained from the output terminal of the voltage multiplier is a triangular wave with an amplitude of a specified amplitude.
6. The method as claimed in claim 5, wherein the triangular wave signal with the predetermined amplitude is mathematically processed to obtain a sinusoidal wave signal with the predetermined amplitude.
7. A method of generating a waveform signal of specified amplitude as claimed in claim 4 or 6, wherein said mathematical method is a power series polynomial method, or a curve approximation method, or a broken line method.
8. The method according to claim 1, wherein the waveform signal with any amplitude inputted from the voltage divider is a sawtooth waveform, and the output waveform signal obtained from the output terminal of the voltage multiplier is a sawtooth waveform with an amplitude of a predetermined amplitude.
9. The method according to claim 1, wherein the waveform signal of any amplitude inputted from the voltage divider is a modulated wave, and the output waveform signal obtained at the output terminal of the voltage multiplier is a modulated wave of a specified amplitude.
10. The system for generating the waveform signal with the specified amplitude is characterized by comprising a voltage divider and a voltage multiplier, wherein the voltage divider is composed of a general integrated analog multiplier and an operational amplifier, the voltage multiplier is a general integrated analog multiplier, and the output end of the voltage divider is connected with one input end of the voltage multiplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110098089.XA CN112929008A (en) | 2021-01-25 | 2021-01-25 | Method and system for generating waveform signal with specified amplitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110098089.XA CN112929008A (en) | 2021-01-25 | 2021-01-25 | Method and system for generating waveform signal with specified amplitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112929008A true CN112929008A (en) | 2021-06-08 |
Family
ID=76167496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110098089.XA Pending CN112929008A (en) | 2021-01-25 | 2021-01-25 | Method and system for generating waveform signal with specified amplitude |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112929008A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6812769B1 (en) * | 2003-08-12 | 2004-11-02 | System Chemical Corp. | Switched charge multiplier-divider |
| US20070279025A1 (en) * | 2006-05-31 | 2007-12-06 | Intersil Americas Inc. | Current Multiplier/Divider-Configured Feed-Forward Compensation For Buck-Mode Converter Controller With Programmed Switching Frequency |
| TW200910332A (en) * | 2007-07-23 | 2009-03-01 | Sony Corp | PLL circuit, recording apparatus, and clock-signal generating method |
| JP2013183258A (en) * | 2012-03-01 | 2013-09-12 | Anritsu Corp | Signal generation device and signal generation method |
| CN103973271A (en) * | 2014-04-28 | 2014-08-06 | 苏州经贸职业技术学院 | Signal generation circuit |
| US20150070951A1 (en) * | 2013-09-06 | 2015-03-12 | Richtek Technology Corp. | Multiplier-divider circuit and ac-to-dc power converting apparatus incorporating the same |
| CN107302508A (en) * | 2017-06-14 | 2017-10-27 | 上海电机学院 | A kind of 2FSK signals are produced and detection circuit |
| CN110165922A (en) * | 2019-06-11 | 2019-08-23 | 西安科技大学 | Multiple-channel output random waveform power signal source |
| CN111595468A (en) * | 2020-05-12 | 2020-08-28 | 浙江理工大学 | PGC phase demodulation method for compensating carrier phase delay nonlinear error |
| CN111600819A (en) * | 2020-06-02 | 2020-08-28 | 广州道源信息科技有限公司 | Network signal modulation and demodulation method based on phase generated carrier |
| CN111614588A (en) * | 2020-05-21 | 2020-09-01 | 济南浪潮高新科技投资发展有限公司 | Signal modulation method, device, equipment and computer readable storage medium |
-
2021
- 2021-01-25 CN CN202110098089.XA patent/CN112929008A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6812769B1 (en) * | 2003-08-12 | 2004-11-02 | System Chemical Corp. | Switched charge multiplier-divider |
| US20070279025A1 (en) * | 2006-05-31 | 2007-12-06 | Intersil Americas Inc. | Current Multiplier/Divider-Configured Feed-Forward Compensation For Buck-Mode Converter Controller With Programmed Switching Frequency |
| TW200910332A (en) * | 2007-07-23 | 2009-03-01 | Sony Corp | PLL circuit, recording apparatus, and clock-signal generating method |
| JP2013183258A (en) * | 2012-03-01 | 2013-09-12 | Anritsu Corp | Signal generation device and signal generation method |
| US20150070951A1 (en) * | 2013-09-06 | 2015-03-12 | Richtek Technology Corp. | Multiplier-divider circuit and ac-to-dc power converting apparatus incorporating the same |
| CN103973271A (en) * | 2014-04-28 | 2014-08-06 | 苏州经贸职业技术学院 | Signal generation circuit |
| CN107302508A (en) * | 2017-06-14 | 2017-10-27 | 上海电机学院 | A kind of 2FSK signals are produced and detection circuit |
| CN110165922A (en) * | 2019-06-11 | 2019-08-23 | 西安科技大学 | Multiple-channel output random waveform power signal source |
| CN111595468A (en) * | 2020-05-12 | 2020-08-28 | 浙江理工大学 | PGC phase demodulation method for compensating carrier phase delay nonlinear error |
| CN111614588A (en) * | 2020-05-21 | 2020-09-01 | 济南浪潮高新科技投资发展有限公司 | Signal modulation method, device, equipment and computer readable storage medium |
| CN111600819A (en) * | 2020-06-02 | 2020-08-28 | 广州道源信息科技有限公司 | Network signal modulation and demodulation method based on phase generated carrier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7646225B2 (en) | Mains phase detection apparatus | |
| US8239434B2 (en) | System, method, and apparatus for distortion analysis | |
| JP4381450B2 (en) | Synchronous clock generation circuit and analog / digital angle converter and angle detection device provided with synchronous clock generation circuit | |
| CN111555752B (en) | Single-phase frequency self-adaptive phase-locked loop | |
| CN105974997B (en) | A kind of Digital Implementation method of sine wave signal | |
| CN116359605B (en) | Harmonic signal analysis method based on secondary weighting | |
| US5039872A (en) | Digitally synthesized audio frequency voltage source | |
| CN112929008A (en) | Method and system for generating waveform signal with specified amplitude | |
| CN103888091A (en) | Harmonic distortion correction method for digital audio class D power amplifier | |
| Evans et al. | Hybrid technique in waveform generation and synthesis | |
| CN201266243Y (en) | Device for generating metal detector sine wave | |
| CN108923770A (en) | A kind of triangular signal production method | |
| Abdul-Jabbar et al. | Performance Analysis of Single-Multiplier Digital Sine-Cosine Generators | |
| Hassanzadegan et al. | Analogue and Digital Low Level RF for the ALBA Synchro tron | |
| CN110174537A (en) | A kind of signal generator circuit system and signal sending method | |
| US20240263969A1 (en) | Resolver-to-digital converter circuit, resolver signal processing apparatus, resolver signal processing method, and program | |
| Farret et al. | Signal Simulators and Emulators | |
| CN103940462A (en) | Sensor linear correction circuit outputting in electric signal mode | |
| CN109714048B (en) | DDS circuit with phase mode changeable and phase output method | |
| CN108616472B (en) | Amplitude modulation method and amplitude modulation device | |
| JPS63185105A (en) | Generating circuit for high frequency optional signal | |
| Li et al. | Research of parameter adjustable harmonic signal generator based on DDS | |
| CN115542231A (en) | Device is examined in whole to wide band calibrator based on standard source | |
| JP2001305164A (en) | Analog insulating circuit | |
| Wu et al. | The design and implementation of a signal source for EIT system using DSP builder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |