CN105891601A - Harmonic component assistant testing device - Google Patents
Harmonic component assistant testing device Download PDFInfo
- Publication number
- CN105891601A CN105891601A CN201610462298.7A CN201610462298A CN105891601A CN 105891601 A CN105891601 A CN 105891601A CN 201610462298 A CN201610462298 A CN 201610462298A CN 105891601 A CN105891601 A CN 105891601A
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- microprocessor
- harmonic component
- signal
- unit
- testing device
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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
- G01R23/16—Spectrum analysis; Fourier analysis
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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
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/165—Spectrum analysis; Fourier analysis using filters
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- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a harmonic component assistant testing device, and aims to improve the accuracy of harmonic tests. The harmonic component assistant testing device comprises a microprocessor, wherein the microprocessor is used for receiving parameters; the microprocessor is connected with a signal processing module for processing signals; the signal processing module comprises three units, namely, a signal amplification unit, a high-flux filtering unit and a gain control unit. Compared with the prior art, the harmonic component assistant testing device aims to inhibit the amplitude of test signals by using a high-flux filtering technique, so that the influence of a frequency spectrograph can be reduced, the signal amplitude can be precisely controlled by virtue of signal amplification and gain control techniques to ensure accurate tests on harmonic components.
Description
Technical field
The present invention relates to a kind of harmonic component auxiliary test unit, for improving the accuracy of stress_responsive genes.
Background technology
In electronics test process, the harmonic component test of transmitter is an important test index.General employing audiofrequency spectrometer is tested, and owing to the frequency mixer in audiofrequency spectrometer has non-linear behavior, along with the increase of mixer-input signal power, the level of frequency mixer secondary and tertiary parasitism response product will increase rapidly.If expressed in logarithmic, the amplitude growth rate of secondary parasitism response is 2 times of signal amplitude, and the amplitude growth rate of tertiary parasitism response is 3 times of signal amplitude.
Signal level and secondary and the decibel value of tertiary parasitism response levels ratio, proportionally reduce with the growth of mixer-input signal level respectively, so that the measurement dynamic range of spectrum analyzer reduces, simultaneously, owing to the frequency mixer own frequency characteristic of different spectral instrument is different, the intermodulation product caused for identical input signal is also the most different, here it is the most different with the stress_responsive genes result of audiofrequency spectrometer.If increasing external attenuation and attenuated inside, it will directly affecting the measurement sensitivity of audiofrequency spectrometer, the second harmonic making amplitude relatively low is submerged in noise cannot be measured.In sum, creating contradiction during harmonic component is tested, on the one hand signal amplitude to be reduced, on the other hand can not make again second harmonic, triple-frequency harmonics amplitude reduction, make harmonic component accurately tests the condition that faces a difficult selection.
Summary of the invention
In order to solve the stress_responsive genes problem in the presence of background technology, the present invention provides a kind of harmonic component auxiliary test unit, it can suppress to be test for signal amplitude, the signal amplitude of two, triple-frequency harmonics is carried out gain control simultaneously, the impact of audiofrequency spectrometer can be reduced, the accuracy of harmonic measure can be improved again.
It is an object of the invention to realize in the following manner:
A kind of harmonic component auxiliary test unit, including the microprocessor of reception parameter, microprocessor is connected with the signal processing module being used for processing signal, and signal processing module includes signal amplification, high-pass filtering and three unit of gain control.
The parameter that microprocessor receives is by input through keyboard, and microprocessor is also associated with display screen and voice broadcast module simultaneously, and microprocessor, signal processing module, keyboard, display screen and voice broadcast module are all connected with power module.
Microprocessor connects FLASH ROM.
Signal amplification, high-pass filtering and three unit of gain control are connected with microprocessor by IEEE488 bus interface circuit.
Relative to prior art, the present invention utilizes high-pass filtering technology to suppress the amplitude of test signal, to reduce the impact of audiofrequency spectrometer, utilizes signal amplification, gain control accurately to control signal amplitude simultaneously, to guarantee the accurate test of harmonic component.
Accompanying drawing explanation
Fig. 1 is the system composition diagram of the present invention.
Fig. 2 be the present invention as seen flow chart.
Detailed description of the invention
As Figure 1-Figure 2, a kind of harmonic component auxiliary test unit, including microprocessor, FLASH ROM, power module, signal processing module, voice broadcast module, Keyboard Control, LCDs.Described signal processing module includes signal amplification, high-pass filtering, three unit of gain control.The unit that power module is harmonic component auxiliary test unit provides power supply.Described display screen is LED LCDs.Described microprocessor is Ling Yang SPCE061A.Ling Yang SPCE061A mcu resource enriches, and cost performance is higher.It not only has speech identifying function, and has abundant voice function library, the soundplay module of the present invention i.e. programming realization on the basis of voice function library.
Three unit of signal processing module are connected with microprocessor by IEEE488 bus interface circuit, and the frequency values to be tested by input through keyboard and amplitude size, parameter is issued to signal processing module by microprocessor, and three unit cooperate.Signal amplification unit is mainly amplified, to make up the energy attenuation of signal processing module being test for signal；High pass filter unit mainly completes to test the Filtering Processing of signal, suppresses signal-under-test 1 frequency multiplication of input, allows 2 frequencys multiplication of signal-under-test, 3 frequencys multiplication pass through simultaneously；The amplitude of signal-under-test is adjusted by gain control unit, if amplitude becomes big, the most suitably decays；If amplitude diminishes, the most suitably increase.
Voice broadcast mainly by voice reminder tester, the current duty of harmonic component testing auxiliary device the most normally, whether can carry out the numerical values recited etc. of the test of harmonic component, test result.It is based primarily upon the voice function library that microprocessor carries and develops, and can effectively promote the efficiency of test job, saves the time of test job.
Claims (4)
1. a harmonic component auxiliary test unit, it is characterised in that: including that the microprocessor receiving parameter, microprocessor are connected with the signal processing module being used for processing signal, signal processing module includes signal amplification, high-pass filtering and three unit of gain control.
A kind of harmonic component auxiliary test unit the most according to claim 1, it is characterized in that: the parameter that microprocessor receives is by input through keyboard, microprocessor is also associated with display screen and voice broadcast module simultaneously, and microprocessor, signal processing module, keyboard, display screen and voice broadcast module are all connected with power module.
A kind of harmonic component auxiliary test unit the most according to claim 1 and 2, it is characterised in that: microprocessor connects FLASH
ROM。
A kind of harmonic component auxiliary test unit the most according to claim 1, it is characterised in that: signal amplification, high-pass filtering and three unit of gain control are connected with microprocessor by IEEE488 bus interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462298.7A CN105891601A (en) | 2016-06-23 | 2016-06-23 | Harmonic component assistant testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462298.7A CN105891601A (en) | 2016-06-23 | 2016-06-23 | Harmonic component assistant testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105891601A true CN105891601A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610462298.7A Pending CN105891601A (en) | 2016-06-23 | 2016-06-23 | Harmonic component assistant testing device |
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| CN (1) | CN105891601A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11149281A (en) * | 1997-06-18 | 1999-06-02 | Hewlett Packard Co <Hp> | Method and device for displaying graticule window data on computer screen |
| CN2665720Y (en) * | 2003-11-25 | 2004-12-22 | 华南理工大学 | Hand-held pincerlike digital current harmonic analyzer |
| CN201298058Y (en) * | 2008-10-30 | 2009-08-26 | 武汉大学 | High integration density programmed filter analysis device based on field programmable gate array (FPGA) |
| CN101639499A (en) * | 2009-09-01 | 2010-02-03 | 中国电子科技集团公司第四十一研究所 | Device and method for measuring small signal harmonic distortion traced by fundamental waves |
| CN202256648U (en) * | 2011-09-28 | 2012-05-30 | 南京丹迪克科技开发有限公司 | Three-phase power harmonic standard source |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| CN103048538A (en) * | 2012-11-29 | 2013-04-17 | 焦作市神盾科技有限公司 | Method for testing collective frequency of radio frequency card and tester for realizing method |
| US20140354344A1 (en) * | 2011-05-26 | 2014-12-04 | Tektronix, Inc. | Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing |
| CN205958646U (en) * | 2016-06-23 | 2017-02-15 | 中国人民解放军63888部队 | Harmonic component auxiliary test device |
-
2016
- 2016-06-23 CN CN201610462298.7A patent/CN105891601A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11149281A (en) * | 1997-06-18 | 1999-06-02 | Hewlett Packard Co <Hp> | Method and device for displaying graticule window data on computer screen |
| CN2665720Y (en) * | 2003-11-25 | 2004-12-22 | 华南理工大学 | Hand-held pincerlike digital current harmonic analyzer |
| CN201298058Y (en) * | 2008-10-30 | 2009-08-26 | 武汉大学 | High integration density programmed filter analysis device based on field programmable gate array (FPGA) |
| CN101639499A (en) * | 2009-09-01 | 2010-02-03 | 中国电子科技集团公司第四十一研究所 | Device and method for measuring small signal harmonic distortion traced by fundamental waves |
| US20140354344A1 (en) * | 2011-05-26 | 2014-12-04 | Tektronix, Inc. | Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing |
| CN202256648U (en) * | 2011-09-28 | 2012-05-30 | 南京丹迪克科技开发有限公司 | Three-phase power harmonic standard source |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| CN103048538A (en) * | 2012-11-29 | 2013-04-17 | 焦作市神盾科技有限公司 | Method for testing collective frequency of radio frequency card and tester for realizing method |
| CN205958646U (en) * | 2016-06-23 | 2017-02-15 | 中国人民解放军63888部队 | Harmonic component auxiliary test device |
Non-Patent Citations (1)
| Title |
|---|
| 李俊杰: "如何准确测量发射机谐波分量", 《中国无线电管理》 * |
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Application publication date: 20160824 |
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