CN108693411A - A kind of product electromagnetic radiation method of evaluating performance based on multiple target - Google Patents
A kind of product electromagnetic radiation method of evaluating performance based on multiple target Download PDFInfo
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- CN108693411A CN108693411A CN201810549461.2A CN201810549461A CN108693411A CN 108693411 A CN108693411 A CN 108693411A CN 201810549461 A CN201810549461 A CN 201810549461A CN 108693411 A CN108693411 A CN 108693411A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
Abstract
The present invention relates to a kind of electric equipment products risk analysis methods, particularly disclose a kind of product electromagnetic radiation method of evaluating performance based on multiple target.The product electromagnetic radiation method of evaluating performance based on multiple target, it is characterized in that:After selected sample, sample and target are numbered;Sample EMC testing result useful informations are extracted, including frequency, limit value, quasi-peak value;The EMC reference values S of sample is calculated according to formulaNAnd reference value TN;According to actual conditions, respectively to reference value SNAnd TNAssignment is carried out, total reference value E is calculatedN;To the reference value E of each sampleNResult of calculation is compared, and carries out value-at-risk sequence, while establishing risk value data library;Input the reference value E of targetN,SNAnd TN, obtain risk block diagram.Step of the present invention is simple, easy to operate, visual result, by calculating value-at-risk, quantifies product risks, reinforces the evaluation to product electromagnetic radiation performance.
Description
(One)Technical field
The present invention relates to a kind of electric equipment products risk analysis method, more particularly to a kind of product electromagnetism spoke based on multiple target
Penetrate method of evaluating performance.
(Two)Background technology
Household electrical appliance of today, including dust catcher, micro-wave oven, blender, television set, computer, washing machine, electric iron, coffee machine,
Refrigerator, bread baker, electric blanket etc. are essential electrical equipments in daily life.However, these domestic electric appliances
Radiation can be all generally generated, within the scope of 1 meter of these domestic electric appliances, powerful dust catcher magnetic induction intensity can be with
Reach 2 μ T units, wherein μ T are electromagnetic radiance units, and the electromagnetic radiation of micro-wave oven is between 0.23-6 μ T.According to country
Relevant regulations, radiation are exactly to belong to dangerous values compared with intense radiation, have certain harm to human body under long-term irradiation more than 0.4 μ T.
Therefore, the electromagnetic radiation that household electrical appliance generate virtually just generates a degree of injury, household to user
Electric appliance is detected its electromagnetic radiation performance in production, and the value-at-risk to control product just becomes a kind of necessity, and shows
Have in technology, although there are the electromagnetic radiation intensity detection devices of electric equipment products, and passes through the property of the detection numerical Evaluation product
Can, it still, can not be not any to production and product adjustment by evaluating fast reaction of the performance realization to product risks value
It helps.
(Three)Invention content
A kind of in order to compensate for the shortcomings of the prior art, the present invention provides steps simple, accurate and effective quantization product risks of result
The product electromagnetic radiation method of evaluating performance based on multiple target.
The present invention is achieved through the following technical solutions:
A kind of product electromagnetic radiation method of evaluating performance based on multiple target, includes the following steps:
(1)Several electric equipment products are randomly selected as sample, to each sample and target into line label;
(2)The electromagnetic radiation test that m different frequency is carried out to each sample, information and arrangement in extraction test are unified for table
Case form, wherein information include frequency, limit value and quasi-peak value;
(3)The EMC reference values S of each sample is calculated according to formulaNAnd reference value TN;
(4)According to actual conditions, respectively to reference value SNAssignment is carried out, if weight is WS, to reference value TNAssignment is carried out, if power
Weight is WT;Total reference value E is calculated according to formulaN;
(5)To the reference value E of each sampleNResult of calculation is compared sequence, show that value-at-risk sorts, the risk of judgement sample is big
It is small, while establishing risk value data library;
(6)Calculate the reference value E of targetN,SNAnd TN, by above-mentioned reference value result input risk value data library, obtain risk column
Figure, can be visually seen the risk situation of product.
The present invention carries out risk analysis to the electric equipment products of multiple target, and each parameter detecting value and product wind may be implemented
The reasonable conversion being nearly worth effectively fills up this field technology blank;By calculating value-at-risk, quantifies product risks, reinforce to production
The evaluation of product electromagnetic radiation performance contributes to the quality of rapid comparative product performance, finds high risk point faster, realizes to wind
The fast reaction of danger, meets the needs of domestic Risk Monitoring data processing field.
The present invention more excellent technical solution be:
Step(2)In, the test of the variant frequencies of m, F are carried out to sample NMFor the frequency of M points, XMNIt is sample N under M frequencies
The quasi-peak value measured, LXMFor the limit value under M frequencies;It is required that quasi-peak value is the smaller the better, and no more than limit value.By sample N's
EMC testing results are listed in the table, as shown in the table:
。
Step(3)In, the EMC reference values S of sample NNCalculation formula be:
;
In addition, l is to meet X1N≥LXMFrequency point number, then the EMC reference values T of sample NNCalculation formula be:。
Due to when carrying out risk analysis, being not only whether product to be seen meets the requirements of the standard, product electricity is also seen
Whole potential risks in terms of magnetic compatibility.It is exactly the degree of closeness of each quasi-peak value Distance l imit herein, although some do not have
Still close from limit value more than limit value, such case product quality there is potential risks, and product has certain in design
Room for improvement, SNValue can effectively reflect this risk situation, SNValue is bigger, and the EMC risk test results of representative sample N are fuller
Meaning.
Due to being required according to standard, as long as quasi-peak value decides that the product is unqualified, institute higher than limit value there are one products
With reference value TNIt is rejection item, TNValue is bigger, and representative sample N more meets standard requirement, i.e. the EMC of the sample closes mapping test result
It is more satisfied, herein, only represent the single-point quantity situation for requiring quasi-peak value to be higher than limit value according to standard.
Step(4)In, total reference value ENCalculation formula be.Each sample is found out successively
E values, ENValue is bigger, and the EMC integrated testability results of representative sample N are more satisfied.
Step(4)In, actual conditions are such as to require higher, W to the ensemble average situation of sample EMCSDistribution with respect to WT
Greatly;The single point requirement higher for the value that do not transfinite to sample such as, WTDistribution with respect to WSGreatly.
Step of the present invention is simple, easy to operate, visual result, by calculating value-at-risk, quantifies product risks, reinforcement pair
The evaluation of product electromagnetic radiation performance contributes to the quality of rapid comparative product performance, finds high risk point, realization pair faster
The fast reaction of risk meets the needs of domestic Risk Monitoring data processing field.
(Four)Description of the drawings
The present invention will be further described below with reference to the drawings.
Fig. 1 is the sample risk block diagram of the present invention.
(Five)Specific implementation mode
Embodiment:
In case, laboratory is successively rectified and improved twice since the EMC test results to a certain electric equipment products are dissatisfied, if
Sample before not rectifying and improving is 1# samples, is 2# samples after rectifying and improving for the first time, and the sample after second of rectification is 3# samples.We
According to the effect of verification rectification the step of the method for the present invention.
Following table is the quasi-peak value distribution situation of 1#-2# samples at different frequencies.1# samples are the sample that do not rectify and improve, and 2# is
Sample after rectification.
It can be seen that laboratory has carried out 1# samples the test of 3 points, the test of 7 points has been carried out to 2# samples.
The EMC reference values S of 1# samples1For:
;
The EMC reference values T of 1# samples1For:
。
The EMC reference values S of 2# samples2For
;
The EMC reference values T of 2# samples2For
。
In the Risk Monitoring of product, need mainly to investigate whether product meets the requirements of the standard, EMC reference values TNWeight
Can suitably it increase.But in present case, because product is in during rectification, to search based on design defect, understands product and set
Whether the rectification on meter is effective, needs more to consider risk performance, and is not only to see the requirement for meeting test stone, so with reference to
Value SNWeight can suitably raise.
In present case, if reference value SNWeight be WS=0.6, if reference value TNWeight be WT=0.4。
;
。
It is evaluated according to sample EMC test results, 2# samples are substantially better than 1# samples, it was demonstrated that rectification is effective.It can be seen that
In the case where two times result Frequency point chooses the different complex situations of number, specific evaluation of estimate still can be obtained by algorithm.
Although EMC test results have some improvement after rectification, laboratory still not satisfies E2=0.48 this knot
Fruit in order to keep on improving, and has carried out second and has rectified and improved, and the sample identity after secondary rectification is 3# samples by we, to 3# samples
Product have carried out another EMC tests.
Following table is peak Distribution situation of the 2#-3# samples under 7 kinds of frequencies after secondary rectification.2# samples are to carry pulley
Situation, 3# samples are not carry pulley.
It can be seen that 2# samples have 7 point tests, 3# samples to have the test of 3 points.
The S of 2# samples2Value and T2Value has been found out in previous step:
S2=0.228;
T2=0.857。
The EMC reference values S of 3# samples3For
;
The EMC reference values T of 3# samples3For
。
If reference value SNWeight be WS=0.6, if reference value TNWeight be WT=0.4。
;
。
It is rectified and improved, sample EMC test results is evaluated according to this, 3# samples are substantially better than 2# samples by second
Product.
The E of 1#-2# samplesNValue is respectively E1=0.14, E2=0.48, E3=0.64.In this way, being finally obtained by algorithm calculating
The value-at-risk of these three samples sorts, as shown in the table:
。
Reference value ENIt can reflect value-at-risk, reference value ENValue is bigger, and the EMC integrated testability results of representative sample N are fuller
Meaning, risk are smaller.In this example, it can be seen that by rectifying and improving twice, ENValue constantly increases, and is complied fully with actual conditions.
There are the data that quantization is had according to result of calculation, it can be seen that very intuitive risk map is as shown in Fig. 1
1#-3# sample risk block diagrams.
Calculating the method for can be seen that by simulation can achieve the desired results, and the detection project and technology of setting are wanted
It asks, is calculated by multi-objective Algorithm, the value-at-risk of sample can be obtained, and then obtain the risk ranking of sample.In actual wind
In the monitoring of danger, situation is often nonstandard, and data volume is big and requires to be swift in response.The multiple target mathematical method that this algorithm provides
Due to, so the algorithm more traditional than some has stronger adaptability in this field, being accomplished for designed by EMC performances
Rapid reaction, easy to operate, visual result.
Claims (5)
1. a kind of product electromagnetic radiation method of evaluating performance based on multiple target, it is characterized in that, include the following steps:(1)At random
Several electric equipment products are chosen as sample, to each sample and target into line label;(2)M different frequencies are carried out to each sample
The electromagnetic radiation of rate is tested, and the information and arrangement in extraction test are unified for form, wherein information include frequency, limit value and
Quasi-peak value;(3)The EMC reference values S of each sample is calculated according to formulaNAnd reference value TN;(4)According to actual conditions, respectively to ginseng
Examine value SNAssignment is carried out, if weight is WS, to reference value TNAssignment is carried out, if weight is WT;Total reference value E is calculated according to formulaN;
(5)To the reference value E of each sampleNResult of calculation is compared sequence, show that value-at-risk sorts, the risk size of judgement sample,
Establish risk value data library simultaneously;(6)Calculate the reference value E of targetN,SNAnd TN, above-mentioned reference value result is inputted into value-at-risk number
According to library, risk block diagram is obtained, can be visually seen the risk situation of product.
2. the product electromagnetic radiation method of evaluating performance according to claim 1 based on multiple target, it is characterised in that:Step
(2)In, the test of the variant frequencies of m, F are carried out to sample NMFor the frequency of M points, XMNThe standard measured under M frequencies for sample N
Peak value, LXMFor the limit value under M frequencies.
3. the product electromagnetic radiation method of evaluating performance according to claim 2 based on multiple target, it is characterised in that:Step
(3)In, the EMC reference values S of sample NNCalculation formula be:
;L is to meet X1N≥LXMFrequency
The number of point, then the EMC reference values T of sample NNCalculation formula be:。
4. the product electromagnetic radiation method of evaluating performance according to claim 1 or 2 based on multiple target, it is characterised in that:
Step(4)In, total reference value ENCalculation formula be。
5. the product electromagnetic radiation method of evaluating performance according to claim 1 or 2 based on multiple target, it is characterised in that:
Step(4)In, actual conditions are such as to require higher, W to the ensemble average situation of sample EMCSDistribution with respect to WTGreatly;Such as to sample
Product do not transfinite single point requirement higher of value, WTDistribution with respect to WSGreatly.
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2018
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| CN102095572A (en) * | 2010-12-06 | 2011-06-15 | 广州市熠芯节能服务有限公司 | Product performance test method based on benchmarking product comparison |
| CN102495302A (en) * | 2011-11-15 | 2012-06-13 | 上海卫星工程研究所 | Component classification and detection method |
| CN103716177A (en) * | 2013-11-18 | 2014-04-09 | 国家电网公司 | Security risk assessment method and apparatus |
| CN204666732U (en) * | 2015-05-15 | 2015-09-23 | 浙江核芯监测科技有限公司 | A kind of electromagnetic radiation continuous monitoring device |
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