CN103076521A - Equipment layout regulating method on basis of exposure measurement on microwave frequency band radiation - Google Patents

Equipment layout regulating method on basis of exposure measurement on microwave frequency band radiation Download PDF

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CN103076521A
CN103076521A CN2012105911609A CN201210591160A CN103076521A CN 103076521 A CN103076521 A CN 103076521A CN 2012105911609 A CN2012105911609 A CN 2012105911609A CN 201210591160 A CN201210591160 A CN 201210591160A CN 103076521 A CN103076521 A CN 103076521A
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frequency band
microwave frequency
airborne equipment
electromagnetic radiation
matrix
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CN103076521B (en
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贾云峰
马超
胡修
吴亮
魏嘉利
马新超
苏东林
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Beihang University
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Beihang University
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Abstract

The invention discloses an equipment layout regulating method on the basis of exposure measurement on microwave frequency band radiation. According to the method, by measuring microwave frequency band radiation intensity of airborne equipment in different regions of a helicopter cabin body, combining a military standard limit and adopting a weighting matrix strategy, calculation on the electromagnetic compatibility balance degree of the complete machine microwave frequency band radiation of a helicopter system is completed and the problems that conventionally, an electromagnetic compatibility balanced state of the equipment radiation in the microwave frequency band of the system is difficult to well track and monitor and improvement potential of the electromagnetic compatibility of the system cannot be judged are solved. By considering the radiation characteristics of the complete machine microwave frequency band of the helicopter system, the electromagnetic compatibility balanced state of the complete machine microwave frequency band of the helicopter system is evaluated, so that pertinence and effectiveness of quantitative evaluation on the electromagnetic compatibility of the microwave frequency range are improved.

Description

A kind of device layout method of adjustment of measuring based on the microwave frequency band radioactive exposure
Technical field
The present invention relates to a kind of device layout method of adjustment of measuring based on the microwave frequency band radioactive exposure, belong to the EMC Design field.
Background technology
In the electronics of a plurality of equipment collaboration work, electrical system, the electromagnetic interference (EMI) of the generation of a certain equipment can be coupled on another equipment by modes such as conduction emission and radiation-emittings, causes the hydraulic performance decline of another equipment, even can't work.Day by day complicated along with the more and more precise treatment of integrated circuit and system equipment, system gets more and more people's extensive concerning to the requirement of electromagnetic compatibility always.
Manufacture and design the later stage at Helicopter System, can carry out the test of various electromagnetic compatibility standards to complete machine, qualified to show the full machine Electro Magnetic Compatibility under the airborne equipment installation state, this moment many airborne equipments design typification finish, the difficulty that the electromagnetic compatibility problem that occurs in the test is rectified and improved, expend greatly.And from the helicopter conceptual level to engineering development stage, limited to the means that airborne equipment electromagnetic radiation compatibility is carried out effectively, controlled in real time, the compatible tension metrics of the electromagnetic radiation that does not clearly quantize is so that in the electromagnetic compatibility process control, be difficult to reach the monitoring purpose.
Summary of the invention
The objective of the invention is in order to realize the compatible equilibrium state quantitatively evaluating of Helicopter System complete machine microwave frequency band electromagnetic radiation, proposed a kind of compatible equilibrium state method for quantitatively evaluating of complete machine microwave frequency band electromagnetic radiation of measuring based on the microwave frequency band electromagnetic radiation exposure.
According to the Electro Magnetic Compatibility general technical requirement that the model development initial stage is determined, the complete machine electromagnetic compatible requirement generally includes: 1, consist of and want between each airborne equipment of complete machine, subsystem and can compatible work, namely from compatible; 2, system self satisfies the adaptive requirement of electromagnetic environment; 3, for the restriction of whole system radiation-emitting.These three parts have consisted of the Electro Magnetic Compatibility of complete machine.
The electromagnetic compatibility sexual balance: when system satisfied above-mentioned three conditions simultaneously, system was in the Electro Magnetic Compatibility equilibrium state.Air environment must be in the Electro Magnetic Compatibility equilibrium state arbitrarily, and different model requires different according to its general technical, and the Electro Magnetic Compatibility equilibrium state that need to reach also is not quite similar.
The present invention proposes a kind of being based upon on the complete machine microwave frequency band radiation matrix basis, be used for estimating the index of the good and bad degree of the compatible equilibrium state of Helicopter System complete machine microwave frequency band electromagnetic radiation, be designated as compatible quality of balance: the b of Helicopter System complete machine microwave frequency band electromagnetic radiation, dependence is to the in advance measurement of airborne equipment in the microwave frequency band radiation intensity of going straight up to cabin body zones of different, in conjunction with army's mark limit value, adopt the weighting matrix strategy to finish the calculating of the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation, solved and be difficult to the compatible equilibrium state of complete machine microwave frequency band electromagnetic radiation is carried out good tracking and supervision in the past, the problem of improvement potentiality that can't the evaluation system Electro Magnetic Compatibility.Consider the radiation characteristic of Helicopter System complete machine microwave frequency band, assess for the compatible equilibrium state of Helicopter System complete machine microwave frequency band electromagnetic radiation, improved specific aim and the validity of microwave frequency band Electro Magnetic Compatibility quantitative evaluation.
A kind of compatible equilibrium state method for quantitatively evaluating of complete machine microwave frequency band electromagnetic radiation of measuring based on the microwave frequency band electromagnetic radiation exposure comprises following step:
The first step: divide helicopter personnel operating area;
Second step: measure the radiation intensity of helicopter-mounted equipment microwave frequency band in zones of different, obtain airborne equipment microwave frequency band radiation matrix;
The 3rd step: obtain the microwave frequency band personnel operating area exposure limits of m airborne equipment, obtain microwave frequency band personnel exposure limits matrix;
The 4th step: obtain the compatible abundant value matrix of airborne equipment microwave frequency band electromagnetic radiation;
The 5th step: obtain each airborne equipment radiation weights of microwave frequency band, and obtain airborne equipment microwave frequency band radiation weight matrix;
The 6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
The 7th step: according to the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation that the 6th step obtained, adjust airborne equipment, the compatible equilibrium state of optimization system electromagnetic radiation;
The present invention is based on airborne equipment different to each radiation contributions degree of fuselage, the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation is investigated, finish the airborne equipment adjustment, its advantage is:
(1) realized the quantification of helicopter research and development proposal stage to the compatible equilibrium state of engineering development stage electromagnetic radiation;
(2) Real Time Monitoring for systems radiate Electro Magnetic Compatibility equilibrium state provides evaluation measures;
(3) solved the radiation of equipment Electro Magnetic Compatibility equilibrium state that in the past is difficult to system's microwave frequency band and carried out good tracking and supervision, the problem of improvement potentiality that can't the evaluation system Electro Magnetic Compatibility;
(4) provide technical support for airborne equipment adjustment optimization.
Description of drawings
Fig. 1 is the compatible equilibrium state method for quantitatively evaluating of Helicopter System complete machine microwave frequency band electromagnetic radiation process flow diagram;
Fig. 2 is that used test platform feature of the present invention forms schematic diagram.
Among the figure:
The 1-computing machine, 2-measuring receiver, 3-attenuator, 4-log-periodic antenna.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The present invention is a kind of under known microwave frequency band airborne equipment radiation intensity, be suitable for the method for quantitatively evaluating of the compatible equilibrium state of Helicopter System complete machine microwave frequency band electromagnetic radiation, as shown in Figure 1, the Electro Magnetic Compatibility equilibrium state assessment of carrying out according to the method has the following step:
The first step: divide helicopter personnel operating area;
Zone of action according to operating personnel in helicopter physical arrangement and helicopter flight, the helicopter ground maintenance process, adopt the mark GJB5313-2004 of army " electromagnetic radiation exposure restriction and measuring method " that helicopter fuselage and near zone are divided, obtain helicopter personnel operating area, and difference called after: zone 1, zone 2, zone 3, zone n, n represents the quantity of zoning, n 〉=3.The division in zone can consider according to helicopter self operational need, bonding properties characteristic, the fuselage near zone that should comprise at least cockpit area, crew module zone and high-power antenna in n zone, high-power antenna refers to the airborne antenna more than or equal to 50W among the present invention, airborne antenna is installed on the fuselage, to cause radiation effect to its position near zone of installing, so at the fuselage near zone that carries out to consider when the zone is divided high-power antenna.
Second step: measure the radiation intensity of helicopter-mounted equipment microwave frequency band in zones of different, obtain airborne equipment microwave frequency band radiation matrix;
As shown in Figure 2, measuring table comprises computing machine 1, measuring receiver 2, attenuator 3 and log-periodic antenna 4; Computing machine 1, measuring receiver 2, attenuator 3, log-periodic antenna 4 connect by wire successively.
Described measuring receiver 2 is German Luo De and Schwarz R﹠amp; The ESIB-40 model that S company produces;
The DTS300300W model that described attenuator 3 is produced for ShangHai HuaXiang Computer Communication Engineering Co., Ltd;
Described log-periodic antenna 4 is German Luo De and Schwarz R﹠amp; The HL223 model that S company produces;
Log-periodic antenna 4 is placed in the zone to be measured, helicopter-mounted equipment is when work, the microwave frequency band electromagnetic radiation of 4 pairs of airborne equipments of log-periodic antenna receives, obtain microwave frequency band electromagnetic radiation signal, 3 pairs of microwave frequency band electromagnetic radiation of attenuator signal is decayed, microwave frequency band electromagnetic radiation signal after 2 pairs of decay of computing machine 1 control survey receiver gathers, obtain the microwave frequency band electromagnetic radiation intensity of airborne equipment in this zone, by computing machine 1 record microwave frequency band electromagnetic radiation intensity.
Concrete steps are:
Step 201: adopt measuring table, measure the microwave frequency band electromagnetic radiation intensity of airborne equipment in each zone, establish total m the airborne equipment of Helicopter System, be specially:
Divide in conjunction with the helicopter personnel activity zone that obtains in the first step, according to measuring system platform shown in Figure 2 m airborne equipment carried out the microwave frequency band radiation emission measurement, and the microwave frequency band electromagnetic radiation intensity that collects is denoted as Tre.
Adopt measuring table, in zone 1, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre 1,1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre 1,2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre 1, m, close m airborne equipment.Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity in zone 1 measures.
Adopt measuring table, in zone 2, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre 2,1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre 2,2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre 2, m, close m airborne equipment.Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity in zone 2 measures.
……
In like manner, adopt measuring table, in regional n, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre N, 1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre N, 2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre N, m, close m airborne equipment.Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity of regional n measures.
Step 202: according to the measurement result that obtains in the step 201, set up airborne equipment microwave frequency band radiation matrix T:
Figure BDA00002689983800051
The 3rd step: obtain the microwave frequency band personnel operating area exposure limits of m airborne equipment, obtain microwave frequency band personnel exposure limits matrix;
According to the regulation that among the GJB5313-2004 " electromagnetic radiation exposure restriction and measuring method " personnel operating area electromagnetic radiation exposure is limited, obtain the microwave frequency band personnel operating area exposure limits of m airborne equipment.The electromagnetic radiation of microwave frequency band comprises continuous wave, two kinds of emission types of pulsating wave, among the GJB5313-2004 to definite method of operating area microwave frequency band continuous wave, pulsating wave exposure limits is:
(1) the continuous exposure limits that exposes of operating area microwave frequency band continuous wave is:
When frequency is 300MHz～3 * 10 3During MHz, exposure limits is 15v/m;
When frequency is 3 * 10 3MHz～10 4During MHz, exposure limits is
When frequency is 10 4MHz～3 * 10 5During MHz, exposure limits is 27.4v/m;
(2) exposure limits of operating area microwave frequency band continuous wave intermittent exposure is:
When frequency was 300MHz～400MHz, exposure limits was 61.4v/m;
When frequency is 400MHz～2 * 10 3During MHz, exposure limits is
Figure BDA00002689983800053
When frequency is 2 * 10 3MHz～3 * 10 5During MHz, exposure limits is 137.3v/m;
(3) the continuous exposure limits that exposes of operating area microwave frequency band pulsating wave is:
When frequency is 300MHz～3 * 10 3During MHz, exposure limits is 10.6v/m;
When frequency is 3 * 10 3MHz～10 4During MHz, exposure limits is
When frequency is 10 4MHz～3 * 10 5During MHz, exposure limits is 19.4v/m;
(4) exposure limits of operating area microwave frequency band pulsating wave intermittent exposure is:
When frequency was 300MHz～400MHz, exposure limits was 43.42v/m;
When frequency is 400MHz～2 * 10 3During MHz, exposure limits is
Figure BDA00002689983800055
When frequency is 2 * 10 3MHz～3 * 10 5During MHz, exposure limits is 97.08v/m;
Wherein, f represents the radiation frequency of airborne equipment, and unit is MHz;
According to the electromagnetic radiation type of airborne equipment, adopt definite method of above-mentioned exposure limits, the microwave frequency band personnel operating area exposure limits that obtains m airborne equipment is:
The microwave frequency band personnel operating area exposure limits of first airborne equipment is designated as Expl 1
The microwave frequency band personnel operating area exposure limits of second airborne equipment is designated as Expl 2
……
The microwave frequency band personnel operating area exposure limits of m airborne equipment is designated as Expl m
For corresponding with the airborne equipment microwave frequency band radiation matrix that obtains in the step 202, divide in conjunction with the helicopter personnel operating area that obtains in the first step, set up microwave frequency band personnel exposure limits matrix E:
Figure BDA00002689983800061
The 4th step: obtain the compatible abundant value matrix of airborne equipment microwave frequency band electromagnetic radiation;
Step 401: the airborne equipment microwave frequency band radiation matrix T that obtains in the step 202 and the microwave frequency band personnel exposure limits matrix E that obtains in the 3rd step are n * m rank matrix, carry out matrix and subtract each other S=E-T, obtain:
δ i,j＝Expl j-Tre i,j
Wherein, the row of i representing matrix, the row of j representing matrix, δ I, jBe element corresponding in the matrix S:
Figure BDA00002689983800062
Step 402: each element in the matrix S is advanced to go respectively normalized:
δ i , j ′ = δ i , j Exp l j
Wherein, δ ' I, jExpression δ I, jValue after the normalized, Expl jThe value of arbitrary element in the j row among the representing matrix E obtains the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation:
Figure BDA00002689983800071
If the negative value element occurs among the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation, according to Bucket Principle, make then that all values on the occasion of element are 0, matrix S ' in only keep the negative value element.
Among the present invention, with the element δ ' among the compatible abundant value matrix S ' of airborne equipment microwave frequency band electromagnetic radiation I, jWeigh different airborne equipment radiation to the abundant value of radiation in helicopter different work zone.
The 5th step: obtain each airborne equipment radiation weights of microwave frequency band, and obtain airborne equipment microwave frequency band radiation weight matrix;
Step 501: according among the GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term " to the key category classification principle of subsystem and equipment, obtain m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml m, be specially:
According to 2.1.56 joint among the GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term ", the key category classification principle of subsystem and equipment: all are installed in intrasystem, or should delimit the electromagnetic compatibility into EMC(with subsystem and the equipment of System Dependent) a certain class in the crucial class.These divide the impact that may cause based on electromagnetic interference (EMI), failure rate or for the degradation program of assign task.Can be divided into following three kinds:
(1) this class electromagnetic compatibility problem of I class may cause that the lost of life, delivery vehicle are impaired, tasks interrupt, emission of a high price postpones or unacceptable system effectiveness descends;
(2) this class electromagnetic compatibility problem of II class may cause delivery vehicle fault, system effectiveness to descend, and cause task to finish;
(3) this class electromagnetic compatibility problem of III class may cause noise, slight discomfort or performance degradation, but can not reduce the expection validity of system.
Among the present invention, calculate in order to carry out digitizing, adopt the analytical hierarchy process strategy, the electromagnetic compatibility classification indicators that the airborne equipment of I class is satisfied in acquisition are AA; The electromagnetic compatibility classification indicators that the airborne equipment of II class is satisfied in acquisition are AB; The electromagnetic compatibility classification indicators that the airborne equipment of III class is satisfied in acquisition are AC, and then the electromagnetic compatibility classification indicators of m airborne equipment are em l s = AA AB AC , And AA＞AB＞AC, 1≤s≤m.
In the present invention, illustrate that with electromagnetic compatibility classification indicators EML different airborne equipments are on the impact of system EMC.
Step 502: obtain electromagnetic compatibility classification weight;
To m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml mCarry out the data processing, obtain airborne equipment electromagnetic compatibility classification weight EM={em 1, em 2..., em m;
Wherein: em r = eml r Σ q = 1 m eml q × 100 % , 1≤r≤m，1≤q≤m；
Em 1The electromagnetic compatibility classification indicators eml that represents first airborne equipment 1Weight;
Em 2The electromagnetic compatibility classification indicators eml of second airborne equipment of expression 2Weight;
……
Em mThe electromagnetic compatibility classification indicators eml that represents m airborne equipment mWeight;
Among the present invention, weigh different airborne equipment electromagnetic compatibility harm to the influence degree of personnel operating area radioactive exposure value with airborne equipment electromagnetic compatibility classification weight EM.
Step 503: obtain personnel operating area classification weight;
List the classification indicators HAL={1 of n personnel operating area, 1 ..., 1}.
Adopt normalized thought to the classification indicators HAL={1 of n personnel operating area, 1 ..., 1} carries out data to be processed, and obtains personnel operating area classification weight
Figure BDA00002689983800082
Step 504: adopt the power of tax to concern W=HA * EM, to the airborne equipment electromagnetic compatibility classification weight EM={em that obtains in the step 502 1, em 2..., em mAnd step 503 in the personnel operating area classification weight that obtains
Figure BDA00002689983800083
Process, obtain airborne equipment microwave frequency band radiation weight matrix W, wherein, w I, jBe element corresponding in the matrix W:
Figure BDA00002689983800084
Among the present invention, usually weigh different airborne equipment radiation to the radiation effect degree in helicopter different work zone with the unit among the airborne equipment microwave frequency band radiation weight matrix W.
The 6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
Adopt respective items weighted sum strategy
Figure BDA00002689983800091
Element among the microwave frequency band electromagnetic radiation abundant value matrix S of compatibility that obtains in the 4th step and the airborne equipment microwave frequency band radiation weight matrix W that obtains in the 5th step is carried out data process, obtain the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation.
The 7th step: according to the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation that the 6th step obtained, adjust airborne equipment, the compatible equilibrium state of optimization system electromagnetic radiation;
Among the present invention, weigh the quality of the compatible equilibrium state of Helicopter System complete machine microwave frequency band electromagnetic radiation with the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation.The compatible quality of balance b larger (b≤1) of electromagnetic radiation illustrates that then complete machine microwave frequency band Radiation On Human person's harm is lower; Otherwise compatible quality of balance b is less for Helicopter System complete machine microwave frequency band electromagnetic radiation, illustrates that then complete machine microwave frequency band Radiation On Human person's harm is higher.
If b 〉=0, the compatible equilibrium state of expression Helicopter System complete machine microwave frequency band electromagnetic radiation meets military standard of China, can personnel's radiation safety of perform region not impacted;
If b＜0, the compatible equilibrium state of expression Helicopter System complete machine microwave frequency band electromagnetic radiation does not meet military standard of China, will personnel's radiation safety of operating area be impacted, at this moment, position and size according to negative value element among the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation, helicopter-mounted equipment is carried out the Electro Magnetic Compatibility rectification, and to six steps of the repetition of the Helicopter System after rectification second step to the, until the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation 〉=0, namely the compatible equilibrium state of Helicopter System complete machine microwave frequency band electromagnetic radiation satisfies military standard of China.
Embodiment
Set five airborne equipments helicopter perform region personnel's radiation safety is impacted, utilize means of testing to obtain the respectively radiation intensity value of three personnel operating areas below driving cabin, crew module and tail boom of five airborne equipments, the result is as shown in the table:
Table 1 microwave frequency band radiation intensity test result
Figure BDA00002689983800101
According to factors such as the operating characteristic of five airborne equipments, radiation modes, adopt corresponding computing formula, the microwave frequency band personnel operating area exposure limits of each airborne equipment is calculated, the result is as shown in the table:
Table 2 microwave frequency band radiation intensity limit value
Figure BDA00002689983800102
Obtain airborne equipment microwave frequency band radiation matrix T:
T = 16.39 19.23 42.86 5.3 29.55 12.61 26.11 76.23 14.61 41.68 7.92 7.31 36.12 13.42 45.18
And airborne equipment microwave frequency band personnel exposure limits matrix E:
E = 19.2 27.4 84.2 19.4 51.27 19.2 27.4 84.2 19.4 51.27 19.2 27.4 84.2 19.4 51.27
Employing difference strategy S=E-T finds the solution matrix S and each element in the matrix S is carried out normalized, obtains the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation:
S = 2.81 8.17 41.34 14.1 21.72 6.59 1.29 7.97 4 . 79 9.59 11.28 20.09 48.08 5.98 6.09
S ′ = 0.146 0.298 0.491 0.727 0.424 0.343 0.047 0.095 0.247 0.187 0.588 0.733 0.571 0.308 0.119
According among the GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term " to the key category classification principle of subsystem and equipment, and in conjunction with personnel operating area classification weight, adopt the analytical hierarchy process strategy, calculate and obtain airborne equipment microwave frequency band radiation weight matrix W:
HA = { 1 3 , 1 3 , 1 3 , 1 3 , 1 3 } T
EM＝{0.3,0.25,0.25,0.1,0.1}
W = 0.1 0.083 0.083 0.033 0.033 0.1 0.083 0.083 0.033 0.033 0.1 0.083 0.083 0.033 0.033
Computing formula in conjunction with the compatible quality of balance b of microwave frequency band electromagnetic radiation
Figure BDA00002689983800112
Calculate, namely obtain the compatible quality of balance b=0.361 of this Helicopter System complete machine microwave frequency band electromagnetic radiation.
The result of calculation of the compatible quality of balance b of microwave frequency band electromagnetic radiation shows b＞0, illustrates that the compatible equilibrium state of this Helicopter System complete machine microwave frequency band electromagnetic radiation meets military standard of China, can not impact the operating area personal security.

Claims (2)

1. device layout method of adjustment of measuring based on the microwave frequency band radioactive exposure, for microwave frequency band refer to 300MHz～3 * 10 5MHz, method comprises following step:
The first step: divide helicopter personnel operating area;
Zone of action according to operating personnel in helicopter physical arrangement and helicopter flight, the helicopter ground maintenance process, adopt the mark GJB5313-2004 of army " electromagnetic radiation exposure restriction and measuring method " that helicopter fuselage and near zone are divided, obtain helicopter personnel operating area, and difference called after: zone 1, zone 2, zone 3, zone n, n represents the quantity of zoning, n 〉=3; The fuselage near zone that should comprise at least cockpit area, crew module zone and high-power antenna in n zone;
Second step: measure the radiation intensity of helicopter-mounted equipment microwave frequency band in zones of different, obtain airborne equipment microwave frequency band radiation matrix;
Measuring table comprises computing machine, measuring receiver, attenuator and log-periodic antenna; Computing machine, measuring receiver, attenuator, log-periodic antenna connect by wire successively;
Log-periodic antenna is placed in the zone to be measured, helicopter-mounted equipment is when work, log-periodic antenna receives the microwave frequency band electromagnetic radiation of airborne equipment, obtain microwave frequency band electromagnetic radiation signal, attenuator is decayed to microwave frequency band electromagnetic radiation signal, the computer controlled measurement receiver gathers the microwave frequency band electromagnetic radiation signal after decaying, obtain the microwave frequency band electromagnetic radiation intensity of airborne equipment in this zone, by computer recording microwave frequency band electromagnetic radiation intensity;
Concrete steps are:
Step 201: adopt measuring table, measure the microwave frequency band electromagnetic radiation intensity of airborne equipment in each zone, establish total m the airborne equipment of Helicopter System, be specially:
Adopt measuring table, in zone 1, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre 1,1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre 1,2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre L, m, close m airborne equipment; Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity in zone 1 measures;
Adopt measuring table, in zone 2, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre 2,1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre 2,2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre 2, m, close m airborne equipment; Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity in zone 2 measures;
……
In like manner, adopt measuring table, in regional n, measure, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of first airborne equipment, be designated as Tre N, 1, close first airborne equipment, open second airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of second airborne equipment, be designated as Tre N, 2, close second airborne equipment ..., in like manner, open m airborne equipment, measure the microwave frequency band electromagnetic radiation intensity of m airborne equipment, be designated as Tre N, m, close m airborne equipment; Finishing the airborne equipment microwave frequency band electromagnetic radiation intensity of regional n measures;
Step 202: according to the measurement result that obtains in the step 201, set up airborne equipment microwave frequency band radiation matrix T:
Figure FDA00002689983700021
The 3rd step: obtain the microwave frequency band personnel operating area exposure limits of m airborne equipment, obtain microwave frequency band personnel exposure limits matrix;
The electromagnetic radiation of microwave frequency band comprises continuous wave, two kinds of emission types of pulsating wave, determine the microwave frequency band type of m airborne equipment, obtain the microwave frequency band personnel operating area exposure limits of airborne equipment, among the GJB5313-2004 to definite method of operating area microwave frequency band continuous wave, pulsating wave exposure limits be:
(1) the continuous exposure limits that exposes of operating area microwave frequency band continuous wave is:
When frequency is 300MHz～3 * 10 3During MHz, exposure limits is 15v/m;
When frequency is 3 * 10 3MHz～10 4During MHz, exposure limits is
Figure FDA00002689983700022
When frequency is 10 4MHz～3 * 10 5During MHz, exposure limits is 27.4v/m;
(2) exposure limits of operating area microwave frequency band continuous wave intermittent exposure is:
When frequency was 300MHz～400MHz, exposure limits was 61.4v/m;
When frequency is 400MHz～2 * 10 3During MHz, exposure limits is
Figure FDA00002689983700031
When frequency is 2 * 10 3MHz～3 * 10 5During MHz, exposure limits is 137.3v/m;
(3) the continuous exposure limits that exposes of operating area microwave frequency band pulsating wave is:
When frequency is 300MHz～3 * 10 3During MHz, exposure limits is 10.6v/m;
When frequency is 3 * 10 3MHz～10 4During MHz, exposure limits is
Figure FDA00002689983700032
When frequency is 10 4MHz～3 * 10 5During MHz, exposure limits is 19.4v/m;
(4) exposure limits of operating area microwave frequency band pulsating wave intermittent exposure is:
When frequency was 300MHz～400MHz, exposure limits was 43.42v/m;
When frequency is 400MHz～2 * 10 3During MHz, exposure limits is
Figure FDA00002689983700033
When frequency is 2 * 10 3MHz～3 * 10 5During MHz, exposure limits is 97.08v/m;
Wherein, f represents the radiation frequency of airborne equipment, and unit is MHz, and the microwave frequency band personnel operating area exposure limits that obtains m airborne equipment is:
The microwave frequency band personnel operating area exposure limits of first airborne equipment is designated as Expl 1
The microwave frequency band personnel operating area exposure limits of second airborne equipment is designated as Expl 2
……
The microwave frequency band personnel operating area exposure limits of m airborne equipment is designated as Expl m
Set up microwave frequency band personnel exposure limits matrix E:
Figure FDA00002689983700034
The 4th step: obtain the compatible abundant value matrix of airborne equipment microwave frequency band electromagnetic radiation;
Step 401: the airborne equipment microwave frequency band radiation matrix T that obtains in the step 202 and the microwave frequency band personnel exposure limits matrix E that obtains in the 3rd step are n * m rank matrix, carry out matrix and subtract each other S=E-T, obtain:
δ i,j＝Expl j-Tre i，j
Wherein, the row of i representing matrix, the row of j representing matrix, δ I, jBe element corresponding in the matrix S:
Step 402: each element in the matrix S is advanced to go respectively normalized:
δ i , j ′ = δ i , j Exp l j
Wherein, δ ' I, jExpression δ I, jValue after the normalized, Expl jThe value of arbitrary element in the j row among the representing matrix E obtains the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation:
Figure FDA00002689983700043
If the negative value element occurs among the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation, according to Bucket Principle, make then that all values on the occasion of element are 0, matrix S ' in only keep the negative value element;
The 5th step: obtain each airborne equipment radiation weights of microwave frequency band, and obtain airborne equipment microwave frequency band radiation weight matrix;
Step 501: according among the GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term " to the key category classification principle of subsystem and equipment, obtain m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml m, be specially:
According to GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term ", the key classification of subsystem and equipment is divided into following three classes:
(1) this class electromagnetic compatibility problem of I class may cause that the lost of life, delivery vehicle are impaired, tasks interrupt, emission of a high price postpones or unacceptable system effectiveness descends;
(2) this class electromagnetic compatibility problem of II class may cause delivery vehicle fault, system effectiveness to descend, and cause task to finish;
(3) this class electromagnetic compatibility problem of III class may cause noise, slight discomfort or performance degradation, but can not reduce the expection validity of system;
Adopt the analytical hierarchy process strategy, the electromagnetic compatibility classification indicators that the airborne equipment of I class is satisfied in acquisition are AA; The electromagnetic compatibility classification indicators that the airborne equipment of II class is satisfied in acquisition are AB; The electromagnetic compatibility classification indicators that the airborne equipment of III class is satisfied in acquisition are AC, and then the electromagnetic compatibility classification indicators of m airborne equipment are em l s = AA AB AC , And AA＞AB＞AC, 1≤s≤m;
Step 502: obtain electromagnetic compatibility classification weight;
To m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml mCarry out the data processing, obtain airborne equipment electromagnetic compatibility classification weight EM={em 1, em 2..., em m;
Wherein: em r = eml r Σ q = 1 m eml q × 100 % , 1≤r≤m，1≤q≤m；
Em 1The electromagnetic compatibility classification indicators eml that represents first airborne equipment 1Weight;
Em 2The electromagnetic compatibility classification indicators eml of second airborne equipment of expression 2Weight;
……
Em mThe electromagnetic compatibility classification indicators eml that represents m airborne equipment mWeight;
Step 503: obtain personnel operating area classification weight;
The classification indicators HAL={1 of n personnel operating area, 1 ..., 1} obtains personnel operating area classification weight HA = { 1 n , 1 n , . . . , 1 n } T ;
Step 504: adopt the power of tax to concern W=HA * EM, to the airborne equipment electromagnetic compatibility classification weight EM={em that obtains in the step 502 1, em 2..., em mAnd step 503 in the personnel operating area classification weight that obtains
Figure FDA00002689983700054
Process, obtain airborne equipment microwave frequency band radiation weight matrix W, wherein, w I, jBe element corresponding in the matrix W:
Figure FDA00002689983700055
The 6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
Adopt respective items weighted sum strategy
Figure FDA00002689983700056
Element among the microwave frequency band electromagnetic radiation abundant value matrix S ' of compatibility that obtains in the 4th step and the airborne equipment microwave frequency band radiation weight matrix W that obtains in the 5th step is carried out data process, obtain the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation;
The 7th step: according to the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation that the 6th step obtained, adjust airborne equipment, the compatible quality of balance of optimization system electromagnetic radiation;
If b 〉=0, expression Helicopter System complete machine microwave frequency band electromagnetic radiation compatibility meets military standard of China, can personnel's radiation safety of perform region not impacted;
If b＜0, the compatible quality of balance of expression Helicopter System complete machine microwave frequency band electromagnetic radiation does not meet military standard of China, will personnel's radiation safety of operating area be impacted, at this moment, position and size according to negative value element among the compatible abundant value matrix S' of airborne equipment microwave frequency band electromagnetic radiation, helicopter-mounted equipment is carried out the Electro Magnetic Compatibility rectification, and to six steps of the repetition of the Helicopter System after rectification second step to the, until the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation 〉=0, namely the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation satisfies military standard of China.
2. a kind of device layout method of adjustment of measuring based on the microwave frequency band radioactive exposure according to claim 1, described high-power antenna is the airborne antenna more than or equal to 50W.
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