CN207069885U - A kind of intelligent frequency-conversion power supply - Google Patents
A kind of intelligent frequency-conversion power supply Download PDFInfo
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- CN207069885U CN207069885U CN201721091568.4U CN201721091568U CN207069885U CN 207069885 U CN207069885 U CN 207069885U CN 201721091568 U CN201721091568 U CN 201721091568U CN 207069885 U CN207069885 U CN 207069885U
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Abstract
A kind of intelligent frequency-conversion power supply, it is characterized in that, the power supply includes the first frequency divider, second frequency divider, tri-frequency divider, phase comparator, voltage controlled oscillator, low pass filter, register, D/A converting circuit, filter circuit, pass through phase comparator, low pass filter, voltage controlled oscillator, first frequency divider, second frequency divider, tri-frequency divider, register, D/A converting circuit and filter circuit are handled original input signal, so that output signal accuracy is high, frequency is continuous, stability is good, strong interference immunity, reliability is high, it is low in energy consumption, frequency modulation operation is simpler, it is convenient.
Description
Technical field
A kind of power supply is the utility model is related to, more particularly to a kind of intelligent frequency-conversion power supply.
Background technology
In the prior art, frequency continuously adjustabe circuit is mainly the timing work(using DSP Processor in existing power supply
Can, according to amplitude, frequency parameter, tables of data required for producing high-precision signal is calculated, is exported after digital-to-analogue conversion, being formed needs
The signal waveform wanted, this signal generator circuit can realize program control frequency modulation, but the price of this mode is higher, and cost is big,
Calculate cumbersome and larger using digital form frequency calculation error, control is also inconvenient, and programming is difficult.
Utility model content
Technical problem to be solved in the utility model is：The power supply of a frequency continuously adjustabe is designed, output signal
Stability is good, strong interference immunity, and reliability is high, and low in energy consumption, frequency is easily adjusted.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of intelligent frequency-conversion power supply, it is characterised in that the power supply includes the first frequency divider, the second frequency divider, three frequency division
Device, phase comparator, voltage controlled oscillator, low pass filter, register, D/A converting circuit, filter circuit, wherein, described
One frequency divider receives original input signal from the input of the intelligent frequency-conversion power supply, and by the signal output after frequency dividing to institute
The first input end of phase comparator is stated, the output end of the phase comparator is connected to the input of the low pass filter,
The output end of the low pass filter is connected to the input of the voltage controlled oscillator, the output end connection of the voltage controlled oscillator
To the input of second frequency divider and the input of the tri-frequency divider, the output end of second frequency divider connects
To the second input of the phase comparator, the output end of the tri-frequency divider is connected with the input of the register,
The output end of the register is connected with the input of the D/A converting circuit, the output end of the D/A converting circuit and institute
The input for stating filter circuit is connected, and the output end of the filter circuit is the output end of the intelligent frequency-conversion power supply.
Further, first frequency divider and second frequency divider are INTEL8254-2 programmable counters, described
Tri-frequency divider is CD4040 counters.
Further, the frequency division parameter of first frequency divider is arranged to M frequency dividings, the frequency division parameter of second frequency divider
Fractional-N frequency is arranged to, M and N are arbitrary integer.
Wherein, described register is EPROM 27C256.
Wherein, the D/A converting circuit includes chip DAC0832.
The beneficial effects of the utility model are：By phase comparator, low pass filter, voltage controlled oscillator, first point
Frequency device, the second frequency divider, tri-frequency divider, register, D/A converting circuit and filter circuit to original input signal at
Reason so that output signal accuracy is high, and frequency is continuous, and stability is good, and reliability is high, low in energy consumption, and frequency modulation operation is more simply, conveniently.
Brief description of the drawings
Fig. 1 is the schematic diagram according to the variable-frequency power sources of embodiment of the present utility model.
Label declaration：
1st, the first frequency divider；2nd, the second frequency divider；3rd, tri-frequency divider；4th, phase comparator；5th, low pass filter；6th, press
Controlled oscillator；7th, register；8th, D/A converting circuit；9th, filter circuit；Ui, initial input voltage；Fi, initial input frequency；
Um, output voltage；Un, comparison signal；Uw, error voltage；Ud, control voltage；Uo, voltage controlled oscillator output voltage；It is Fo, voltage-controlled
Oscillator output frequencies.
Embodiment
For detailed description technology contents of the present utility model, the objects and the effects, below in conjunction with embodiment and match somebody with somebody
Accompanying drawing is closed to be explained.
It refer to shown in Fig. 1, a kind of intelligent frequency-conversion power supply, it is characterised in that including the first frequency divider 1, the second frequency divider
2nd, tri-frequency divider 3, phase comparator 4, voltage controlled oscillator 6, low pass filter 5, register 7, D/A converting circuit 8, filtering
Circuit 9.Wherein, first frequency divider 1 receives original input signal from the input of the intelligent frequency-conversion power supply, passes through M points
After frequency, the output signal of first frequency divider 1 is exported into the first input end to the phase comparator 4, the phase ratio
Output end compared with device 4 is connected to the input of the low pass filter 5, and the output end of the low pass filter 5 is connected to described
The input of voltage controlled oscillator 6, the output end of the voltage controlled oscillator 6 is connected to the input of second frequency divider 2, described
Output signal is connected to the second input of the phase comparator 4, described VCO by the output end of the second frequency divider 2
The output end of device 6 connects the input of the tri-frequency divider 3, the output end of the tri-frequency divider 3 and the register 7
Input is connected, and the output end of the register 7 is connected with the input of the D/A converting circuit 8, the digital-to-analogue conversion electricity
The output end on road 8 is connected with the input of the filter circuit 9, and the output end of the filter circuit is the intelligent frequency-conversion power supply
Output end.
The phase comparator 4 is by contrasting the output signal of the first frequency divider 1 and second frequency divider 2 output letter
Number, the output error voltage of phase comparator 4, the error voltage obtains a control after being filtered by the low pass filter 5
Voltage processed, the control voltage is added to the input of the voltage controlled oscillator 6, the output signal warp of the voltage controlled oscillator 6
After crossing the progress of the second frequency divider 2 Fractional-N frequency, the phase comparator 4 is entered back into, is continued defeated with first frequency divider 1
Go out signal carry out phase bit comparison, finally cause the voltage controlled oscillator 6 output frequency equal to N be multiplied by initial input frequency divided by
M, it can thus be appreciated that, it is only necessary to the frequency division parameter N of frequency division parameter M and second frequency divider 2 to first frequency divider 1 are carried out
Set, can be achieved with the continuously adjustabe of output frequency.The output signal of the voltage controlled oscillator 6 passes through the tri-frequency divider 3
Corresponding address code can be produced, the data of appropriate address can be read by the register 7, by the digital-to-analogue conversion
Circuit 8, the digital quantization data read from the register 7 can be converted into analog quantity, can be with by the filter circuit 9
Export the signal of specific frequency.
It was found from foregoing description, the beneficial effects of the utility model are：By phase comparator 4, low pass filter 5,
Voltage controlled oscillator 6, the first frequency divider 1, the second frequency divider 2, tri-frequency divider 3, register 7, D/A converting circuit 8 and filtered electrical
Road 9 is handled original input signal so that output signal accuracy is high, and frequency is continuous, and stability is good, and reliability is high, power consumption
Low, frequency modulation operation is more simply, conveniently.
Further, described intelligent frequency-conversion power supply, the first described frequency divider 1 and the second frequency divider 2 are
INTEL8254-2 programmable counters, tri-frequency divider 3 are CD4040 counters.
Seen from the above description, the output signal of the voltage controlled oscillator 6 can produce phase by the tri-frequency divider 3
The address code answered, frequency modulation operation can be made more simply, conveniently using programmable counter.
Further, described intelligent frequency-conversion power supply, the frequency division parameter of the first described frequency divider 1 are arranged to M frequency dividings, institute
The frequency division parameter for the second frequency divider 2 stated is arranged to Fractional-N frequency, and M and N are arbitrary integer.
Seen from the above description, it is only necessary to frequency division parameter M's and second frequency divider 2 to first frequency divider 1
Frequency division parameter N is configured, and can be achieved with the continuously adjustabe of output frequency.
Further, described intelligent frequency-conversion power supply, described register 7 are EPROM 27C256.
Seen from the above description, the data of appropriate address can be read by the register 7.
Further, described intelligent frequency-conversion power supply, described D/A converting circuit 8 include chip DAC0832.
Seen from the above description, by the D/A converting circuit 8, the digital quantity that will can be read from the register 7
Change data and be converted into analog quantity, described intelligent frequency-conversion power supply output accuracy is high, and frequency is continuous, and stability is good.
Fig. 1 is refer to, embodiment one of the present utility model is：
A kind of intelligent frequency-conversion power supply, including the first frequency divider 1, the second frequency divider 2, tri-frequency divider 3, phase comparator 4,
Voltage controlled oscillator 6, low pass filter 5, register 7, D/A converting circuit 8, filter circuit 9.Wherein, first frequency divider 1
Original input signal is received from the input of the intelligent frequency-conversion power supply, after being divided by M, by the defeated of first frequency divider 1
Go out first input end of the signal output to the phase comparator 4, the output end of the phase comparator 4 is connected to the low pass
The input of wave filter 5, the output end of the low pass filter 5 is connected to the input of the voltage controlled oscillator 6, described voltage-controlled
The output end of oscillator 6 is connected to the input of second frequency divider 2, and the output end of second frequency divider 2, which will export, to be believed
The second input of the phase comparator 4 number is connected to, the output end of described voltage controlled oscillator 6 connects the three frequency division
The input of device 3, the output end of the tri-frequency divider 3 are connected with the input of the register 7, the register 7 it is defeated
Go out end with the input of the D/A converting circuit 8 to be connected, the output end of the D/A converting circuit 8 and the filter circuit 9
Input be connected, the output end of the filter circuit is the output end of the intelligent frequency-conversion power supply.
The phase comparator 4 is by contrasting the output signal of the first frequency divider 1 and second frequency divider 2 output letter
Number, the output error voltage of phase comparator 4, the error voltage obtains a control after being filtered by the low pass filter 5
Voltage processed, the control voltage is added to the input of the voltage controlled oscillator 6, the output signal warp of the voltage controlled oscillator 6
After crossing the progress of the second frequency divider 2 Fractional-N frequency, the phase comparator 4 is entered back into, is continued defeated with first frequency divider 1
Go out signal carry out phase bit comparison, finally cause the voltage controlled oscillator 6 output frequency equal to N be multiplied by initial input frequency divided by
M, it can thus be appreciated that, it is only necessary to the frequency division parameter of frequency division parameter and second frequency divider 2 to first frequency divider 1 just can be real
Existing frequency continuously adjustabe.The output signal of the voltage controlled oscillator 6 can produce corresponding address by the tri-frequency divider 3
Code, the data of appropriate address can be read by the register 7, can will be from described by the D/A converting circuit 8
The digital quantization data that register 7 is read are converted into analog quantity, and the letter of specific frequency can be exported by the filter circuit 9
Number.
In summary, the utility model passes through phase comparator 4, low pass filter 5, voltage controlled oscillator 6, the first frequency divider
1st, the second frequency divider 2, tri-frequency divider 3, register 7, D/A converting circuit 8 and filter circuit 9 are carried out to original input signal
Processing so that output signal accuracy is high, and frequency is continuous, and stability is good, strong interference immunity, and reliability is high, low in energy consumption, frequency modulation operation
More simply, conveniently.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalents made using the utility model specification and accompanying drawing content, or directly or indirectly it is used in the technology neck of correlation
Domain, similarly it is included in scope of patent protection of the present utility model.
Claims (5)
- A kind of 1. intelligent frequency-conversion power supply, it is characterised in that the power supply include the first frequency divider, the second frequency divider, tri-frequency divider, Phase comparator, voltage controlled oscillator, low pass filter, register, D/A converting circuit, filter circuit, wherein, described first point Frequency device receives original input signal from the input of the intelligent frequency-conversion power supply, and gives the signal output after frequency dividing to the phase The first input end of bit comparator, the output end of the phase comparator is connected to the input of the low pass filter, described The output end of low pass filter is connected to the input of the voltage controlled oscillator, and the output end of the voltage controlled oscillator is connected to institute The input of the second frequency divider and the input of the tri-frequency divider are stated, the output end of second frequency divider is connected to institute The second input of phase comparator is stated, the output end of the tri-frequency divider is connected with the input of the register, described The output end of register is connected with the input of the D/A converting circuit, the output end of the D/A converting circuit and the filter The input of wave circuit is connected, and the output end of the filter circuit is the output end of the intelligent frequency-conversion power supply.
- 2. intelligent frequency-conversion power supply according to claim 1, it is characterised in that first frequency divider and second frequency dividing Device is INTEL8254-2 programmable counters, and the tri-frequency divider is CD4040 counters.
- 3. intelligent frequency-conversion power supply according to claim 1, it is characterised in that the frequency division parameter of first frequency divider is set Divided for M, the frequency division parameter of second frequency divider is arranged to Fractional-N frequency, and M and N are arbitrary integer.
- 4. intelligent frequency-conversion power supply according to claim 1, it is characterised in that the register is EPROM 27C256.
- 5. intelligent frequency-conversion power supply according to claim 1, it is characterised in that the D/A converting circuit includes chip DAC0832。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091568.4U CN207069885U (en) | 2017-08-29 | 2017-08-29 | A kind of intelligent frequency-conversion power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091568.4U CN207069885U (en) | 2017-08-29 | 2017-08-29 | A kind of intelligent frequency-conversion power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207069885U true CN207069885U (en) | 2018-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091568.4U Active CN207069885U (en) | 2017-08-29 | 2017-08-29 | A kind of intelligent frequency-conversion power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207069885U (en) |
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2017
- 2017-08-29 CN CN201721091568.4U patent/CN207069885U/en active Active
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