CN108152622A - For inhaling the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom - Google Patents

For inhaling the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom Download PDF

Info

Publication number
CN108152622A
CN108152622A CN201711366840.XA CN201711366840A CN108152622A CN 108152622 A CN108152622 A CN 108152622A CN 201711366840 A CN201711366840 A CN 201711366840A CN 108152622 A CN108152622 A CN 108152622A
Authority
CN
China
Prior art keywords
communication system
estimation method
vehicular communication
inhale
frequency point
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.)
Granted
Application number
CN201711366840.XA
Other languages
Chinese (zh)
Other versions
CN108152622B (en
Inventor
张世巍
李春明
赵晓凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China North Vehicle Research Institute
Original Assignee
China North Vehicle Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China North Vehicle Research Institute filed Critical China North Vehicle Research Institute
Priority to CN201711366840.XA priority Critical patent/CN108152622B/en
Publication of CN108152622A publication Critical patent/CN108152622A/en
Application granted granted Critical
Publication of CN108152622B publication Critical patent/CN108152622B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/001Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing

Abstract

The invention belongs to the electromagnetic compatibility test assessment technology fields of communication system, and in particular to one kind is used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom.By the present invention in that the mass data measured with communication port derives the relationship between Vehicular communication system antenna port scan amplitude and sensitivity.The quantization conversion formula of the disturbed degree of Vehicular communication system is obtained by processing as input condition using antenna port test data and Sensitivity Calibration value, generates quantized data using reduction formula to judge the disturbed degree of Vehicular communication system.

Description

For inhaling the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom
Technical field
The invention belongs to the electromagnetic compatibility test assessment technology fields of communication system, and in particular to one kind is used to inhale wave darkroom The interior disturbed degree quantitative estimation method of Vehicular communication system.
Background technology
Military vehicle vehicle electronic device integrated level is higher and higher at present, and the increase of high-power electronic device causes electronics to do It disturbs and greatly increases, receive sensitivity decrease after frequently resulting in Vehicular communication system installation, performance indicator is greatly reduced.Compel at this stage Be essential ask can quickly, quantization show communication system installation after performance change, in the electromagnetism of military Vehicular communication system In compatibility test assessment, there is presently no detailed quick wide frequency communication port quantization measuring methods to occur.Common communication System testing appraisal procedure tested person condition, test mode and the influence for testing content, it is impossible to accurately reflect communication system comprehensively The Electro Magnetic Compatibility of system.In order to overcome this problem, it needs to propose a kind of disturbed for inhaling Vehicular communication system in wave darkroom The appraisal procedure of degree quantization.Quantized data is generated using this method to judge the disturbed degree of Vehicular communication system, Ke Yiti The accuracy of height communication system EMC assessment.
Invention content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to:How to provide one kind can accurate quantification Vehicular communication system installation after The appraisal procedure of communication performance variation.This method mainly tests the communication system port coupled interference under complex environment in the car Situation, the degree that can be interfered with accurate evaluation Vehicular communication system.
(2) technical solution
In order to solve the above technical problems, the present invention provides one kind for inhaling the disturbed degree amount of Vehicular communication system in wave darkroom Change appraisal procedure, include the following steps:
Step S1, communication system antenna port noise level test data is obtained;
Step S2, extraction sampling frequency point;
Step S3, communication system Sensitivity Calibration value is obtained;
Step S4, quantized data is generated using reduction formula;
Step S5, the assessment of the disturbed situation of communication system is carried out.
Wherein, in the step 1, the measurement of communication system antenna port noise level is carried out inside anechoic chamber, is made Test curve is measured with receiver.
Wherein, the test curve includes peak value scanning curve and average value scanning curve, uses the amplitude peaks of receiver Value, amplitude average value detecting way measure peak value scanning curve and average value scanning curve.
Wherein, in the step 2, the peak value scanning curve and average value scanning curves and ambient trace that obtained to step 1 It is compared, the part higher more than 6dB than the test value amplification level in ambient trace is defined as interference region;In test curve On interference region frequency range in selecting frequency point as sampling frequency point.
Wherein, the Frequency point with following characteristics is chosen in the interference region frequency range on test curve as sampling Frequency point;
Sampling frequency point should at least while have two categories below feature:
● in interference region frequency range;
● peak amplitude is higher than centre frequency F0More than ± 25kHz peak amplitudes 3dB;
● the difference between peak value and mean value amplitude is within 6dB.
Wherein, in the step 3, inside anechoic chamber, respectively under conditions of noiseless environment and loading interference environment The calibration of communication system sensitivity is carried out, records the communication system Sensitivity Calibration value under two states.
Wherein, in the step 4, communication system sensitivity that sampling frequency point and step 3 that step 2 is chosen measure as Input condition uses reduction formula X=| A |-B, Y=| and A | the X of-C generations, Y value are as quantized data.
Wherein, A is the communication system Sensitivity Calibration value that step 3 obtains.
Wherein, B is amplitude of the sampling frequency point of step 2 selection on average value scanning curve;C is adopting for step 2 selection Amplitude of the sample frequency point on peak value scanning curve.
Wherein, it after being ranked up to quantized data X, Y, compares respectively under noiseless environment with loading the amount under interference environment Change data X, Y, compare the requirement in assessment level to judge the disturbed situation of communication system:
The assessment level of the disturbed situation of 1 communication system of table
(3) advantageous effect
Compared with prior art, the present invention provides one kind for inhaling the disturbed degree quantization of Vehicular communication system in wave darkroom Appraisal procedure tests the situation of the Vehicular communication system port coupled interference under complex environment in the car, can quantify vehicle-mounted The situation that communication performance reduces and communication range reduces after communication system installation, it is vehicle-mounted so as to accurately and rapidly assess The degree that communication system is interfered.
Description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Fig. 2 is Vehicular communication system antenna port interference level test configurations composition schematic diagram of the present invention.
Fig. 3 is Vehicular communication system Sensitivity Calibration test configurations composition schematic diagram of the present invention.
Specific embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's Specific embodiment is described in further detail.
To solve problem of the prior art, the present invention provides one kind for inhaling the disturbed degree of Vehicular communication system in wave darkroom Quantitative estimation method includes the following steps:
Step S1, communication system antenna port noise level test data is obtained;
Step S2, extraction sampling frequency point;
Step S3, communication system Sensitivity Calibration value is obtained;
Step S4, quantized data is generated using reduction formula;
Step S5, the assessment of the disturbed situation of communication system is carried out.
Wherein, in the step 1, the measurement of communication system antenna port noise level is carried out inside anechoic chamber, is made Test curve is measured with receiver.
Wherein, the test curve includes peak value scanning curve and average value scanning curve, uses the amplitude peaks of receiver Value, amplitude average value detecting way measure peak value scanning curve and average value scanning curve.
Wherein, in the step 2, the peak value scanning curve and average value scanning curves and ambient trace that obtained to step 1 It is compared, the part higher more than 6dB than the test value amplification level in ambient trace is defined as interference region;In test curve On interference region frequency range in selecting frequency point as sampling frequency point.
Wherein, the Frequency point with following characteristics is chosen in the interference region frequency range on test curve as sampling Frequency point;
Sampling frequency point should at least while have two categories below feature:
● in interference region frequency range;
● peak amplitude is higher than centre frequency F0More than ± 25kHz peak amplitudes 3dB;
● the difference between peak value and mean value amplitude is within 6dB.
Wherein in the step 3, respectively in the condition of noiseless environment and loading interference environment inside anechoic chamber, The lower calibration for carrying out communication system sensitivity, records the communication system Sensitivity Calibration value under two states.
Wherein, in the step 4, communication system sensitivity that sampling frequency point and step 3 that step 2 is chosen measure as Input condition uses reduction formula X=| A |-B, Y=| and A | the X of-C generations, Y value are as quantized data;
Wherein, A is the communication system Sensitivity Calibration value that step 3 obtains;
B is amplitude of the sampling frequency point of step 2 selection on average value scanning curve;
C is amplitude of the sampling frequency point of step 2 selection on peak value scanning curve.
Wherein, it after being ranked up to quantized data X, Y, compares respectively under noiseless environment with loading the amount under interference environment Change data X, Y, compare the requirement in assessment level to judge the disturbed situation of communication system:
The assessment level of the disturbed situation of 1 communication system of table
Embodiment 1
A kind of appraisal procedure for being used to inhale the disturbed degree quantization of Vehicular communication system in wave darkroom in the present embodiment passes through Mass data is summarized, and summarizes the rule between sensitivity and antenna port level detecting and result.The rule of formation can To simplify testing process, improve the accuracy of communication system test, can quickly, quantization shows after communication system installs Performance change.
Specific embodiment includes:
The first step:Check whether Vehicular communication system is correctly installed and be operated in normal condition, all connectors Whether connect and without the cable of damage.Vehicular communication system parameter is determined, including between operating frequency range, communication frequency point Every, parameters such as bandwidth, the range of sensitivity, signal-to-noise ratio, radio frequency power output;
Second step:Carry out the test of Vehicular communication system antenna port interference level.It is vehicle-mounted logical in anechoic chamber, inner utilization Letter system antenna connects measuring receiver as reception antenna and radiation interference transmitting possible in communications band is measured, and surveys Trial is put as shown in Figure 2.The reception signal port of vehicle on-board antenna is connected to measuring receiver, is led in Vehicular communication system Sweep check in the range of news frequency rate simultaneously records result (peak value, mean spectrum curve).
Third walks:The spectrum curve tested according to antenna port, in the measurement results selection interfere stronger region simultaneously The frequency point of higher magnitude is selected in this region as the Frequency point that interference is generated to communication system.Specific selection method is shown in skill Second step in art scheme.
4th step:The verification of communication system sensitivity quantitatively calibrating is carried out using radio comprehensive measurement instrument.During test according to The impedance adjustment coupling network of test network makes impedance matching, and the range of 20~50dB, specific test configurations may be selected in attenuator As shown in Figure 3.
5th step:The conversion sampled in the peak value of frequency point, mean value, the 4th step of Sensitivity Calibration value input technology scheme is public Formula is calculated, and obtains the concrete numerical value of X, Y.
6th step:By the concrete numerical value of X, Y, sequentially sequence and list by size, compares and standard is assessed in the 5th step of technical solution Requirement then judges the disturbed situation of communication system.
Embodiment 2
The present embodiment provides a kind of for inhaling the appraisal procedure of the disturbed degree quantization of Vehicular communication system in wave darkroom, such as scheme Shown in 1, it the described method comprises the following steps:
S1, communication system antenna port noise level test data is obtained;
S2, extraction sampling frequency point are as input condition;
S3, communication system Sensitivity Calibration test data is obtained;
S4, quantized data is generated using reduction formula;
S5, the assessment for carrying out the disturbed situation of communication system.
Wherein, step S1 is specifically included:Test curve includes peak value scanning curve and average value scanning curve.
Wherein, step S2 is specifically included:According to peak value, Mean curve that port scan obtains, by comparing amplitude Characteristics According to the condition for meeting sampling point feature, sampling frequency point and list are obtained after being screened to the frequency point in all interference regions.
Wherein, step S3 is specifically included:The sensitive number of degrees of communication system are demarcated respectively under noiseless and loading interference environment Value.
Wherein, step S4 is specifically included:Using the obtained sampling frequency point of step S2 and step S3 and sensitivity data as defeated Enter condition, use reduction formula X=| A |-B, Y=| A |-C generation quantized datas as the judgement of communication system disturbed degree according to According to;
Wherein, step S5 is specifically included:Appraisal procedure is that the calling hierarchy compareed using quantized data in assessment level is come Judge the disturbed situation of communication system.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation Also it should be regarded as protection scope of the present invention.

Claims (10)

1. one kind is used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, which is characterized in that it is included such as Lower step:
Step S1, communication system antenna port noise level test data is obtained;
Step S2, extraction sampling frequency point;
Step S3, communication system Sensitivity Calibration value is obtained;
Step S4, quantized data is generated using reduction formula;
Step S5, the assessment of the disturbed situation of communication system is carried out.
2. as described in claim 1 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, in the step 1, the measurement of communication system antenna port noise level is carried out inside anechoic chamber, uses receiver Measure test curve.
3. as claimed in claim 2 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, the test curve includes peak value scanning curve and average value scanning curve, is put down using the magnitude peak of receiver, amplitude The detecting way of mean value measures peak value scanning curve and average value scanning curve.
4. as claimed in claim 3 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, in the step 2, the peak value scanning curve and average value scanning curves that obtained to step 1 are compared with ambient trace, The part higher more than 6dB than the test value amplification level in ambient trace is defined as interference region;Interference on test curve Selecting frequency point is as sampling frequency point in the range of field frequency.
5. as claimed in claim 4 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, the Frequency point with following characteristics is chosen in the interference region frequency range on test curve as sampling frequency point;
Sampling frequency point should at least while have two categories below feature:
● in interference region frequency range;
● peak amplitude is higher than centre frequency F0More than ± 25kHz peak amplitudes 3dB;
● the difference between peak value and mean value amplitude is within 6dB.
6. as claimed in claim 5 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, in the step 3, communicates under conditions of noiseless environment and loading interference environment respectively inside anechoic chamber, The calibration of system sensitivity records the communication system Sensitivity Calibration value under two states.
7. as described in claim 1 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, in the step 4, the communication system sensitivity that sampling frequency point and step 3 that step 2 is chosen measure is as input item Part uses reduction formula X=| A |-B, Y=| and A | the X of-C generations, Y value are as quantized data.
8. as claimed in claim 7 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, A is the communication system Sensitivity Calibration value that step 3 obtains.
9. as claimed in claim 8 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is, B is amplitude of the sampling frequency point of step 2 selection on average value scanning curve;C is that the sampling frequency point that step 2 is chosen exists Amplitude on peak value scanning curve.
10. as claimed in claim 9 be used to inhale the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom, feature It is,
After being ranked up to quantized data X, Y, compare respectively under noiseless environment with loading interference environment under quantized data X, Y compares the requirement in assessment level to judge the disturbed situation of communication system:
The assessment level of the disturbed situation of 1 communication system of table
CN201711366840.XA 2017-12-18 2017-12-18 Interference degree quantitative evaluation method for vehicle-mounted communication system in wave-absorbing darkroom Active CN108152622B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711366840.XA CN108152622B (en) 2017-12-18 2017-12-18 Interference degree quantitative evaluation method for vehicle-mounted communication system in wave-absorbing darkroom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711366840.XA CN108152622B (en) 2017-12-18 2017-12-18 Interference degree quantitative evaluation method for vehicle-mounted communication system in wave-absorbing darkroom

Publications (2)

Publication Number Publication Date
CN108152622A true CN108152622A (en) 2018-06-12
CN108152622B CN108152622B (en) 2020-06-02

Family

ID=62467484

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711366840.XA Active CN108152622B (en) 2017-12-18 2017-12-18 Interference degree quantitative evaluation method for vehicle-mounted communication system in wave-absorbing darkroom

Country Status (1)

Country Link
CN (1) CN108152622B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639372A (en) * 2018-12-13 2019-04-16 深圳市共进电子股份有限公司 A kind of anti-interference wireless plate survey method for exempting to shield test box operation

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020263A1 (en) * 1979-05-28 1980-12-04 Toa Medical Electronics METHOD AND DEVICE FOR PAYING BLOOD PLATES
JPH115982A (en) * 1997-06-17 1999-01-12 Sumitomo Metal Ind Ltd Method for detecting damage to wall of coke oven carbonization chamber
CN101212745A (en) * 2006-12-29 2008-07-02 中兴通讯股份有限公司 Method for mutual interference performance test of dual-mode dual-standby mobile terminal
CN101387680A (en) * 2008-11-04 2009-03-18 信息产业部通信计量中心 Multi-mould radio installation electromagnetical disturbance test system
CN102510313A (en) * 2011-10-21 2012-06-20 中国北方车辆研究所 Method for measuring communication port
CN102749539A (en) * 2012-06-27 2012-10-24 北京航空航天大学 Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference
CN103048561A (en) * 2012-12-11 2013-04-17 上海卫星工程研究所 EMC (Electro Magnetic Compatibility) test method of deep space aircraft coupling
CN103580762A (en) * 2013-11-15 2014-02-12 无锡儒安科技有限公司 Wireless signal type recognition method based on energy patterns
CN104360192A (en) * 2014-11-12 2015-02-18 华北电力大学 Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch
CN104698475A (en) * 2015-04-02 2015-06-10 芜湖航飞科技股份有限公司 Satellite navigation receiver simulation anti-jamming testing method
CN204515141U (en) * 2015-04-16 2015-07-29 南京信息工程大学 Satellite navigation terminal electromagnetic sensitivity measurement, EM sensitivity measurement device
CN106162722A (en) * 2015-03-27 2016-11-23 中国移动通信集团公司 A kind of interference method for rapidly testing and system mutually

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020263A1 (en) * 1979-05-28 1980-12-04 Toa Medical Electronics METHOD AND DEVICE FOR PAYING BLOOD PLATES
JPH115982A (en) * 1997-06-17 1999-01-12 Sumitomo Metal Ind Ltd Method for detecting damage to wall of coke oven carbonization chamber
CN101212745A (en) * 2006-12-29 2008-07-02 中兴通讯股份有限公司 Method for mutual interference performance test of dual-mode dual-standby mobile terminal
CN101387680A (en) * 2008-11-04 2009-03-18 信息产业部通信计量中心 Multi-mould radio installation electromagnetical disturbance test system
CN102510313A (en) * 2011-10-21 2012-06-20 中国北方车辆研究所 Method for measuring communication port
CN102749539A (en) * 2012-06-27 2012-10-24 北京航空航天大学 Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference
CN103048561A (en) * 2012-12-11 2013-04-17 上海卫星工程研究所 EMC (Electro Magnetic Compatibility) test method of deep space aircraft coupling
CN103580762A (en) * 2013-11-15 2014-02-12 无锡儒安科技有限公司 Wireless signal type recognition method based on energy patterns
CN104360192A (en) * 2014-11-12 2015-02-18 华北电力大学 Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch
CN106162722A (en) * 2015-03-27 2016-11-23 中国移动通信集团公司 A kind of interference method for rapidly testing and system mutually
CN104698475A (en) * 2015-04-02 2015-06-10 芜湖航飞科技股份有限公司 Satellite navigation receiver simulation anti-jamming testing method
CN204515141U (en) * 2015-04-16 2015-07-29 南京信息工程大学 Satellite navigation terminal electromagnetic sensitivity measurement, EM sensitivity measurement device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈旸: "基于均值法的GTEM小室辐射EMI噪声提取", 《 南京师范大学学报(工程技术版)》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639372A (en) * 2018-12-13 2019-04-16 深圳市共进电子股份有限公司 A kind of anti-interference wireless plate survey method for exempting to shield test box operation

Also Published As

Publication number Publication date
CN108152622B (en) 2020-06-02

Similar Documents

Publication Publication Date Title
JP5269906B2 (en) Embedded module receiver noise profile
CN102749539B (en) Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference
CN102510313B (en) Method for measuring communication port
CN104601258B (en) A kind of Vehicular communication system is with car multimachine mutual interference method of testing
CN107147541A (en) A kind of WIFI Performance Test Systems and method
CN110702999A (en) Strong electromagnetic pulse shielding effectiveness test system and method
CN109412715B (en) System and method for testing electromagnetic interference of quantization index of airborne communication radio frequency receiving equipment
US8155639B2 (en) System and method for computer noteboook electromagnetic compatibility analysis
CN101493486B (en) Apparatus and method for diagnosing electromagnetic interference
US20090184719A1 (en) Ic testing environment investigative device and method
CN114355093B (en) System and method for evaluating and improving reproduction effectiveness of electromagnetic environment of laboratory
Vogt-Ardatjew et al. On-site radiated emissions measurements in semireverberant environments
CN101738557A (en) Method for diagnosing radiation noise type by using GTEM chamber
Betta et al. Influence of Wi-Fi computer interfaces on measurement apparatuses
CN108152622A (en) For inhaling the disturbed degree quantitative estimation method of Vehicular communication system in wave darkroom
US9083418B2 (en) Versatile antenna received signal strength measurement system not affecting antenna pattern and receiver performance
CN115236419B (en) Electric field intensity calibration method for actual electromagnetic environment signal
CN108307421B (en) Measuring method of wireless terminal, computer readable storage medium, device and system
CN109142907B (en) Special test method for whole satellite radiation emission
CN111141964A (en) Electromagnetic radiation measurement method of ion thruster based on wave-transparent cabin
CN109061767A (en) Deep space exploration high sensitivity testing system and test method
CN115060982A (en) Active near-field composite probe, detection device and calibration method of probe
CN111190220A (en) Method and device for detecting sound wave signals
Bittera et al. Alternative Approach Leading to Reduction in Measurement Instrument Uncertainty of EMI Measurement
Rohani et al. Classification of partial discharge detection technique in high voltage power component: A review

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
GR01 Patent grant
GR01 Patent grant