CN106997004A - A kind of high-precision intelligent frequency displacement, phase-shift measurement device and method - Google Patents
A kind of high-precision intelligent frequency displacement, phase-shift measurement device and method Download PDFInfo
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- CN106997004A CN106997004A CN201710442824.8A CN201710442824A CN106997004A CN 106997004 A CN106997004 A CN 106997004A CN 201710442824 A CN201710442824 A CN 201710442824A CN 106997004 A CN106997004 A CN 106997004A
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- 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
- G01R23/12—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into phase shift
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- Measuring Phase Differences (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of high-precision intelligent frequency displacement, phase-shift measurement device and method, for accurately measuring component and its two-port network frequency displacement and phase shift, including signal generating module, amplification filtration module, follower, microprocessor and input, outlet terminal；Signal generating module is connected with amplification filtration module, amplify the output end connection input terminal of filtration module, outlet terminal is connected with microprocessor, one end of follower is connected with input terminal, the other end is connected with outlet terminal, microprocessor connects host computer by communication interface, and microprocessor is connected with memory module, input equipment and display module.The present invention produces electromagnetic wave signal by signal generator, amplified filtration module amplification filtering, frequency displacement, the phase shift of tested component and its two-port network, output end signal sends into microprocessor processes together with follower signal, realizes the high-acruracy survey moved to electronic component and its frequency decay of two-port network and phase angle.
Description
Technical field
The present invention relates to electromagnetic wave frequency displacement phase shift field of precision measurement, and in particular to a kind of high-precision intelligent frequency displacement, phase shift
Measurement apparatus and method.
Background technology
With the development of the communication technology, information flow-rate is increased demand into explosion type, and channel capacity day hastens towards saturation, electromagnetism wave frequency
Road is almost finished, therefore, generates the multiplexing of communication channel.
In the multiplexing of communication, to more dense multiplexing, it is necessary to carry out strict measurement and control to frequency displacement, phase shift.
At present, the monitoring that the frequency displacement phase shift to various electronic components and its network can not be effective, limitation dense traffic multiplex mode
Development, the bottleneck as restriction Communication Development.Superhigh precision frequency displacement phase shift detection equipment is developed, is very necessary.Therefore, how
Realize that it is still to be solved to carry out frequency displacement phase shift accurate measurement to the network of various electronic components, various electronic components composition
Technical problem.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, filled the invention provides a kind of high-precision intelligent frequency displacement, phase-shift measurement
Put and method, realize the high-acruracy survey to various electronic components and its frequency decay of two-port network, measurement accuracy is
The relative change rate of frequency is up to 10-20Magnitude, can also realize the phase angle to various electronic components and its two-port network
Mobile high-acruracy survey.
The technical solution adopted in the present invention is：
A kind of high-precision intelligent frequency displacement, phase-shift measurement device, for accurately measuring component and its two-port network frequency displacement
And phase shift, including signal generating module, amplification filtration module, follower, microprocessor and the tested component of connection and its both-end
The input of mouth network, outlet terminal；The signal generating module is connected with amplifying the input of filtration module, the amplification filter
The output end connection input terminal of ripple module, the outlet terminal is connected with microprocessor, one end of the follower and
Input terminal is connected, and the other end is connected with outlet terminal, and the microprocessor connects host computer by communication interface, described
Microprocessor is also associated with memory module, input equipment and display module.
Further, the signal generating module by oscillator, amplifier and fixed ampllitude ring group into, the oscillator and amplification
Device is connected, and the output end of the amplifier is connected with fixed ampllitude ring.
Further, the amplification filtration module is made up of amplifying circuit and low-pass filter circuit, the LPF electricity
The output end connection of road and amplifying circuit.
Further, the memory module includes ROM memory and data storage.
Further, the microprocessor carries high-speed AD converter.
Further, the input equipment uses keyboard.
A kind of high-precision intelligent frequency displacement, phase-shift measurement method, for accurately measuring component and its two-port network frequency displacement
And phase shift, comprise the following steps：
Step 1, by signal generating module produce an electromagnetic wave signal X1, the amplified filtration modules of electromagnetic wave signal X1
As measured signal X2；
Step 2, the measured signal X2 turn into phase shift signalling X3 through tested component and its two-port network, using following
Device corrects phase shift signalling X3；Phase shift signalling X3 is sent into microprocessor measured phase angle, and shows on display module measurement
Phase angle；
Step 3, according to phase angle solve obtain frequency displacement, phase shift.
Further, in the step 3, obtaining frequency displacement, phase shift according to phase angle solution is specially：
The calculation formula of frequency displacement is：
Wherein, Δ f is frequency variation, fiTo be tested the input frequency of component and its two-port network, foIt is tested
The output end frequency of component and its two-port network；Δ θ is phase angle caused by accumulation frequency displacement；T is measuring section；
The calculation formula of phase shift is：
Wherein,For the variable quantity at phase angle.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention produces electromagnetic wave signal by signal generator, and amplified filtration module amplification filtering is tested component
And its frequency displacement, the phase shift of two-port network, output connection end signal sent into together with follower signal in microprocessor handle, so
After show measurement result, so as to realize the high-acruracy survey of the frequency decay to various electronic components and its two-port network,
Measurement accuracy is the relative change rate of frequency up to 10-20Magnitude, can also be realized to various electronic components and its two-port network
Phase angle movement high-acruracy survey；Input terminal, output connection end signal is effectively eliminated using follower to bring
Measurement error；Realized by keyboard to frequency, amplitude, algorithm for power modulation；Complete to communicate with host computer by communication interface, realize and survey
The convenient and swift computer that is transferred to of amount data carries out processing and effectively preservation.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is the high-precision intelligent frequency displacement of the embodiment of the present invention one, the overall structure diagram of phase-shift measurement device；
Fig. 2 is the high-precision intelligent frequency displacement of the embodiment of the present invention two, the flow chart of phase-shift measurement method.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Embodiment one
Frequency displacement phase shift high-acruracy survey is carried out to various electronic components and its network in order to realize, present embodiments provided
A kind of high-precision intelligent frequency displacement, phase-shift measurement device, for accurately measuring component and its two-port network frequency displacement and phase shift, such as
Shown in Fig. 1, the measurement apparatus includes signal generating module, amplification filtration module, follower, microprocessor and the tested first device of connection
The input of part and its two-port network, outlet terminal；The signal generating module is connected with amplifying the input of filtration module,
The signal generating module is by oscillator, amplifier and fixed ampllitude ring group into the oscillator is connected with amplifier, the amplifier
Output end be connected with fixed ampllitude ring；The output end connection input terminal of the amplification filtration module, the amplification filtration module
It is made up of amplifying circuit and low-pass filter circuit, the output end connection of the low-pass filter circuit and amplifying circuit, the output
Terminals are connected with microprocessor, and one end of the follower is connected with input terminal, and the other end is connected with outlet terminal,
The microprocessor connects host computer by communication interface, and the microprocessor is also associated with memory module, input equipment and shown
Show module；The memory module includes ROM memory and data storage；The microprocessor carries high-speed AD converter；
The input equipment uses keyboard.
The embodiment disclosed by the invention, using microprocessor as control centre, for the control to whole device, is provided with
ROM memory and data storage, are realized to frequency, amplitude, algorithm for power modulation by keyboard；Be additionally provided with communication interface, complete with
Host computer communicates, and realizes that the convenient and swift computer that is transferred to of measurement data carries out processing and effectively preservation, and pass through display module
Show measurement result.Because frequency displacement is very faint, relative error is small, and conventional method is difficult to measure this change, and the present invention exists
Component and its two-port network two ends addition follower so that the signal of outlet terminal strictly closelys follow the letter of input terminal
Number change, eliminate signal source itself produce error.
Understand that compared with prior art, the embodiment of the invention discloses a kind of high-precision intelligence via above-mentioned technical scheme
Can frequency displacement, phase-shift measurement device, during test, will tested tested component and its two-port network connect and input, outlet terminal
Between, an electromagnetic wave signal is produced by signal generator, amplified filtration module is transferred to tested component and its dual-port
The input terminal of network, outlet terminal, follower are reached by being tested the frequency displacement of component and its two-port network, phase shift
Immediately following tested component and its two end signals of two-port network, direct measurement input terminal, output connection end signal are eliminated
The measurement error brought, output connection end signal is sent into microprocessor together with follower signal and handled, and then shows measurement
As a result, the measurement apparatus realizes the high-acruracy survey to various electronic components and its frequency decay of two-port network, measurement
Precision is the relative change rate of frequency up to 10-20Magnitude, can also be realized to various electronic components and its two-port network
Move high-acruracy survey in phase angle.
Embodiment two
As shown in Fig. 2 a kind of high-precision intelligent frequency displacement, phase-shift measurement method are present embodiments provided, for accurately measuring
Component and its two-port network frequency displacement and phase shift, comprise the following steps：
Step 1, by signal generating module produce an electromagnetic wave signal X1, the amplified filtration modules of electromagnetic wave signal X1
As measured signal X2；
Step 2, the measured signal X2 turn into phase shift signalling X3 through tested component and its two-port network, using following
Device corrects phase shift signalling X3；Phase shift signalling X3 is sent into microprocessor measured phase angle, and shows on display module measurement
Phase angle；
Step 3, according to phase angle solve obtain frequency displacement, phase shift, be specially：
The calculation formula of frequency displacement is：
Wherein, Δ f is frequency variation, fiTo be tested the input frequency of component and its two-port network, foIt is tested
The output end frequency of component and its two-port network；Δ θ is phase angle caused by accumulation frequency displacement；T is measuring section；
The calculation formula of phase shift is：
Wherein,For the variable quantity at phase angle.
The embodiment disclosed by the invention, during test, will tested tested component and its two-port network connect and input, it is defeated
Go out between terminals, an electromagnetic wave signal X1 is produced by signal generating module, the amplified filtration modules of electromagnetic wave signal X1 are put
Greatly, filtering turns into measured signal X2；Measured signal X2 believes through tested component and its two-port network frequency displacement, phase shift as phase shift
Number X3, phase shift signalling X3 is corrected using follower, eliminates measurement error；By phase shift signalling X3 feeding microprocessor measurement phases
Angle, and show on display module measured phase angle, it will be seen that original variable quantity；Solved according to phase angle and obtain frequency displacement, phase shift.This
Examples measure method realizes the high-acruracy survey to various electronic components and its frequency decay of two-port network, measurement essence
Degree is the relative change rate of frequency up to 10-20Magnitude, can also realize the phase to various electronic components and its two-port network
Parallactic angle moves high-acruracy survey.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (8)
1. a kind of high-precision intelligent frequency displacement, phase-shift measurement device, for accurately measure component and its two-port network frequency displacement and
Phase shift, it is characterized in that, including signal generating module, amplification filtration module, follower, microprocessor and the tested component of connection and
The input of its two-port network, outlet terminal；The signal generating module is connected with amplifying the input of filtration module, described
Amplify the output end connection input terminal of filtration module, the outlet terminal is connected with microprocessor, the follower
One end is connected with input terminal, and the other end is connected with outlet terminal, and the microprocessor connects upper by communication interface
Machine, the microprocessor is also associated with memory module, input equipment and display module.
2. a kind of high-precision intelligent frequency displacement according to claim 1, phase-shift measurement device, it is characterized in that, the signal hair
Raw module by oscillator, amplifier and fixed ampllitude ring group into, the oscillator is connected with amplifier, the output end of the amplifier and
Fixed ampllitude ring is connected.
3. a kind of high-precision intelligent frequency displacement according to claim 1, phase-shift measurement device, it is characterized in that, the amplification filter
Ripple module is made up of amplifying circuit and low-pass filter circuit, the output end connection of the low-pass filter circuit and amplifying circuit.
4. a kind of high-precision intelligent frequency displacement according to claim 1, phase-shift measurement device, it is characterized in that, the storage mould
Block includes ROM memory and data storage.
5. a kind of high-precision intelligent frequency displacement according to claim 1, phase-shift measurement device, it is characterized in that, the microprocessor
Device carries high-speed AD converter.
6. a kind of high-precision intelligent frequency displacement according to claim 1, phase-shift measurement device, it is characterized in that, the input is set
It is standby to use keyboard.
7. a kind of high-precision intelligent frequency displacement, phase-shift measurement method, for accurately measure component and its two-port network frequency displacement and
Phase shift, it is characterized in that, comprise the following steps：
Step 1, an electromagnetic wave signal X1 produced by signal generating module, the amplified filtration modules of electromagnetic wave signal X1 turn into
Measured signal X2；
Step 2, the measured signal X2 turn into phase shift signalling X3 through tested component and its two-port network, utilize follower school
Just phase shift signalling X3；Phase shift signalling X3 is sent into microprocessor measured phase angle, and show on display module and to measure phase
Angle；
Step 3, according to phase angle solve obtain frequency displacement, phase shift.
8. a kind of high-precision intelligent frequency displacement according to claim 7, phase-shift measurement method, it is characterized in that, the step 3
In, obtaining frequency displacement, phase shift according to phase angle solution is specially：
The calculation formula of frequency displacement is：
Wherein, Δ f is frequency variation, fiTo be tested the input frequency of component and its two-port network, foFor tested first device
The output end frequency of part and its two-port network；Δ θ is phase angle caused by accumulation frequency displacement；T is measuring section；
The calculation formula of phase shift is：
Wherein,For the variable quantity at phase angle.
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| CN201710442824.8A CN106997004A (en) | 2017-06-13 | 2017-06-13 | A kind of high-precision intelligent frequency displacement, phase-shift measurement device and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986113A (en) * | 1973-11-23 | 1976-10-12 | Hewlett-Packard Company | Two channel test instrument with active electronicphase shift means |
| US7231311B2 (en) * | 2005-04-19 | 2007-06-12 | Jan Verspecht | Method for characterizing high-frequency mixers |
| CN101685113A (en) * | 2008-09-24 | 2010-03-31 | 北京北广科技股份有限公司 | Method and device for measuring phase shift |
| CN202083742U (en) * | 2011-03-03 | 2011-12-21 | 赵孔新 | Digital excitation source and detection switching channel of ultra-low frequency wideband frequency characteristic analyzer |
| CN102445600A (en) * | 2010-09-30 | 2012-05-09 | 上海华建电力设备股份有限公司 | Optimization method based on traditional phase difference measurement and circuit |
| CN202710660U (en) * | 2012-08-23 | 2013-01-30 | 黑龙江工程学院 | SOPC-based frequency characteristic H(jomega) testing device |
| CN104535838A (en) * | 2015-01-21 | 2015-04-22 | 长沙理工大学 | Phase-frequency characteristic detector and phase-frequency characteristic detection method |
| CN104808056A (en) * | 2015-04-19 | 2015-07-29 | 华南理工大学 | Frequency characteristic testing method and device based on comparator conversion |
-
2017
- 2017-06-13 CN CN201710442824.8A patent/CN106997004A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986113A (en) * | 1973-11-23 | 1976-10-12 | Hewlett-Packard Company | Two channel test instrument with active electronicphase shift means |
| US7231311B2 (en) * | 2005-04-19 | 2007-06-12 | Jan Verspecht | Method for characterizing high-frequency mixers |
| CN101685113A (en) * | 2008-09-24 | 2010-03-31 | 北京北广科技股份有限公司 | Method and device for measuring phase shift |
| CN102445600A (en) * | 2010-09-30 | 2012-05-09 | 上海华建电力设备股份有限公司 | Optimization method based on traditional phase difference measurement and circuit |
| CN202083742U (en) * | 2011-03-03 | 2011-12-21 | 赵孔新 | Digital excitation source and detection switching channel of ultra-low frequency wideband frequency characteristic analyzer |
| CN202710660U (en) * | 2012-08-23 | 2013-01-30 | 黑龙江工程学院 | SOPC-based frequency characteristic H(jomega) testing device |
| CN104535838A (en) * | 2015-01-21 | 2015-04-22 | 长沙理工大学 | Phase-frequency characteristic detector and phase-frequency characteristic detection method |
| CN104808056A (en) * | 2015-04-19 | 2015-07-29 | 华南理工大学 | Frequency characteristic testing method and device based on comparator conversion |
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