CN106680618A - Measuring device and measuring method for impulse intensity of EMI measuring system - Google Patents
Measuring device and measuring method for impulse intensity of EMI measuring system Download PDFInfo
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- CN106680618A CN106680618A CN201611019471.2A CN201611019471A CN106680618A CN 106680618 A CN106680618 A CN 106680618A CN 201611019471 A CN201611019471 A CN 201611019471A CN 106680618 A CN106680618 A CN 106680618A
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- pulse
- broadband
- emi
- measuring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a measuring device and a measuring method for impulse intensity of an EMI measuring system. The measuring device comprises a broadband attenuator, a broadband oscilloscope and a PC machine. The broadband attenuator conducts attenuation treatment on an impulse signal; the impulse signal obtained after the attenuation treatment is collected by the broadband oscilloscope; The PC machine controls the broadband oscilloscope to automatically intercept a single impulse waveform and calculate the impulse intensity. The measuring device and the measuring method for the impulse intensity of the EMI measuring system can measure the impulse intensity parameter quickly.
Description
Technical field
The present invention relates to the field of electromagnetic compatibility of radio electronics, more particularly to EMI measuring systems pulse strength measurement
Device and measuring method.
Background technology
With the development of weapon model system, various advanced electronic equipments are more and more in system, the electricity of system space
Magnetic environment becomes increasingly complex, and electromagnetic interference causes serious influence to whole electronic system.In order that electronic system can stablize,
Reliably work, it is necessary to which electromagnetic compatibility test is carried out to the part in system, assess whether it meets overall EMC Design
Requirement.The metering of electromagnetic compatibility measuring apparatus seems very urgent.
The domestic annual comparison held between electromagnetic compatibility measurement laboratory, pulse strength turns into examination in EMI measuring systems
Test an important sources of uncertainty of measurement between room.According to international standard CISPR16-1-1, pulse strength is defined as certain
Working frequency range is divided into 4 wave bands by one pulse voltage to the area of time integral according to working frequency, is respectively A band
（9 kHz~150kHz）, B wave bands（0.15MHz~30MHz）, C-band（30MHz~300MHz）, D wave bands（300MHz~
1000MHz）, while specifying each wave band output pulse signal requirement, specifically it is shown in Table 1.
Table 1 calibrates pulse characteristic
To sum up, the quick measurement of versus pulse strength parameter, is that the important of magnitude tracing for solving EMI measuring system pulse strengties is asked
Topic.
The content of the invention
The problem that the present invention is solved is to need a kind of technology that can realize the quick measurement of versus pulse strength in the prior art；
To solve described problem, the present invention provides a kind of EMI measuring systems pulse strength measurement apparatus and measuring method.
The EMI measuring system pulse strength measurement apparatus that the present invention is provided include：Broadband attenuator, wide-band oscilloscope, PC
Machine；Broadband attenuator pulse signals make attenuation processing；Pulse signal after wide-band oscilloscope collection attenuation processing, and calculate arteries and veins
Rush intensity；PC controls wide-band oscilloscope.
Further, the peak power of the broadband attenuator is not less than 100W.
Further, the band of the wide-band oscilloscope is wider than 11.7GHz.
The present invention is also provided using the pulse strength measurement side of provided EMI measuring system pulse strength measurement apparatus
Method, including：Step one, the pulse signal of broadband attenuator collection EMI measuring system outputs, and carry out attenuation processing；Step 2,
Pulse signal after wide-band oscilloscope collection attenuation processing, and calculate pulse strength；Step 3, the impulse wave figurate number according to collection
Intercept single pulse waveforms and calculate pulse strength according to automatic.
Further, the step 3 single pulse waveforms are intercepted automatically.First, obtain many by controlling oscillograph single to trigger
Recurrent pulse waveform, and numerical differentiation is made to impulse waveform data, porch, finally, root are judged according to numerical differentiation result
According to porch, single pulse waveforms are intercepted.
Advantages of the present invention includes：Technical intelligence is intercepted by broadband attenuation and impulse waveform automatically and intercepts EMI calibration arteries and veins
Rush waveform and obtain pulse strength result, realize the quick measurement of versus pulse strength parameter, solve EMI measuring system pulse strengties
Magnitude tracing problem.
Brief description of the drawings
Fig. 1 is the theory diagram of EMI measuring systems pulse strength measurement apparatus provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of EMI measuring systems pulse strength measuring method provided in an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.
As shown in figure 1, EMI measuring systems pulse strength measurement apparatus provided in an embodiment of the present invention include:Decline in broadband
Subtract device 1, wide-band oscilloscope 2, PC 3；Pulse signal in the collection EMI measuring systems of broadband attenuator 1, pulse signals decline
Subtract treatment；Pulse signal after the collection attenuation processing of wide-band oscilloscope 2, and calculate pulse strength；PC 3 controls wide-band oscilloscope
1。
It is high in view of EMI measuring system pulse amplitudes, it is impossible to directly to gather Wave data, need pulse signals to decline
Subtract treatment.Pulse amplitude maximum 64V is taken, its peak power is calculated for 81.9W, but due to its pulse width, dutycycle
It is minimum, although the amplitude of pulse signal is very high, its effective energy very little.Therefore peak power is chosen in embodiments of the invention
Broadband attenuator not less than 100W.
Wide-band oscilloscope 2 is believed by the impulse waveform after the port processing decay being connected with broadband attenuator 1 for pulse
Feel the pulse width, the characteristics of dutycycle is small, data acquisition need to use wide-band oscilloscope.The minimum 380ps of pulse signal pulsewidth, according to
Rise time 30ps is calculated, and signal bandwidth=0.35/t=11.7GHz, to meet measurement demand, need to be wider than 11.7GHz from band
Wide-band oscilloscope realize that pulse data is gathered, so as to retain the abundant spectrum information of primary signal.
PC intercepts impulse waveform automatically by the port controlling wide-band oscilloscope being connected with wide-band oscilloscope.Pulse strength
Calculating be primarily upon positive pulse waveform, and the pulse signal dutycycle of EMI measuring systems is minimum, certainly will increase impulse waveform and obtain
Take difficulty.The acquisition of positive pulse waveform is realized by the oscillograph method that triggering is obtained automatically with porch automatically for this, and
Pulse strength is calculated by numerical integration.
Fig. 2, is shown and is measured using the pulse strength of EMI measuring systems pulse strength measurement apparatus provided by the present invention
Method flow diagram.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and techniques content of the disclosure above to this hair
Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention
Any simple modification, equivalent variation and modification for being made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (5)
1.EMI measuring system pulse strength measurement apparatus, it is characterised in that including：Broadband attenuator, wide-band oscilloscope, PC；
Broadband attenuator pulse signals make attenuation processing；Pulse signal after wide-band oscilloscope collection attenuation processing, retains pulse letter
Number abundant spectrum information；PC control wide-band oscilloscope intercepts impulse waveform data automatically.
2. according to the EMI measuring system pulse strength measurement apparatus described in claim 1, it is characterised in that the broadband attenuation
The peak power of device is not less than 100W, and bandwidth is not less than 3GHz, and general oscilloprobe bandwidth is less than 1GHz, it is impossible to meets and surveys
Amount is required.
3. according to the EMI measuring system pulse strength measurement apparatus described in claim 1, it is characterised in that the broadband oscillography
The band of device is wider than 11.7GHz.
4. the pulse strength of the EMI measuring system pulse strength measurement apparatus for being provided using any one in claims 1 to 3
Measuring method, it is characterised in that including：Step one, the pulse signal of broadband attenuator collection EMI measuring system outputs, retain
The abundant spectrum information of pulse signal；Pulse signal after step 2, wide-band oscilloscope collection attenuation processing, retains pulse signal
Side information；Step 3, according to collection impulse waveform data intercept single pulse waveforms automatically and calculate pulse strength.
5. according to the pulse strength measuring method described in claim 4, it is characterised in that the step 3 single pulse waveforms are automatic
Interception technology.First, polycycle pulse waveform is obtained by controlling oscillograph single to trigger, and numerical value is made to impulse waveform data
Differential, porch is judged according to numerical differentiation result, finally, according to porch, intercepts single pulse waveforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019471.2A CN106680618A (en) | 2016-11-17 | 2016-11-17 | Measuring device and measuring method for impulse intensity of EMI measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019471.2A CN106680618A (en) | 2016-11-17 | 2016-11-17 | Measuring device and measuring method for impulse intensity of EMI measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680618A true CN106680618A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611019471.2A Pending CN106680618A (en) | 2016-11-17 | 2016-11-17 | Measuring device and measuring method for impulse intensity of EMI measuring system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055607A (en) * | 1990-03-30 | 1991-10-23 | 上海新亚无线电厂 | A kind of high-precision pulse power measurement and device |
| JPH1151974A (en) * | 1997-07-31 | 1999-02-26 | Nec Home Electron Ltd | Probe adapter |
| CN1510426A (en) * | 2002-12-16 | 2004-07-07 | 伟 吴 | Electromagnetic interference diagnostic method and system |
| CN103487788A (en) * | 2013-09-03 | 2014-01-01 | 中国电子科技集团公司第四十一研究所 | Method for rapidly and automatically extracting train pulse signals |
| CN104849524A (en) * | 2015-05-19 | 2015-08-19 | 重庆大学 | Data acquisition system orienting high-power pulse signal and method thereof |
-
2016
- 2016-11-17 CN CN201611019471.2A patent/CN106680618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055607A (en) * | 1990-03-30 | 1991-10-23 | 上海新亚无线电厂 | A kind of high-precision pulse power measurement and device |
| JPH1151974A (en) * | 1997-07-31 | 1999-02-26 | Nec Home Electron Ltd | Probe adapter |
| CN1510426A (en) * | 2002-12-16 | 2004-07-07 | 伟 吴 | Electromagnetic interference diagnostic method and system |
| CN103487788A (en) * | 2013-09-03 | 2014-01-01 | 中国电子科技集团公司第四十一研究所 | Method for rapidly and automatically extracting train pulse signals |
| CN104849524A (en) * | 2015-05-19 | 2015-08-19 | 重庆大学 | Data acquisition system orienting high-power pulse signal and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈正传等: ""示波器测量脉冲信号的扩展思路"", 《泰州职业技术学院学报》 * |
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Application publication date: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |