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CN103076521B - 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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CN103076521B
CN103076521B CN201210591160.9A CN201210591160A CN103076521B CN 103076521 B CN103076521 B CN 103076521B CN 201210591160 A CN201210591160 A CN 201210591160A CN 103076521 B CN103076521 B CN 103076521B
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frequency band
microwave frequency
airborne equipment
radiation
electromagnetic compatibility
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CN103076521A (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 measured based on microwave frequency band radioactive exposure
Technical field
The present invention relates to a kind of device layout method of adjustment measured based on microwave frequency band radioactive exposure, belong to EMC Design field.
Background technology
In the electronics, electrical system of multiple equipment collaboration work, the electromagnetic interference (EMI) of the generation of a certain equipment can be coupled on another equipment by the mode such as conducted emission and radiation-emitting, causes the hydraulic performance decline of another equipment, even cannot normally work.Along with the more and more precise treatment of integrated circuit and the day by day complicated of system equipment, the requirement of system to electromagnetic compatibility gets more and more people's extensive concerning always.
The later stage is manufactured and designed at Helicopter System, the test of various electromagnetic compatibility standard can be carried out to complete machine, qualified to show the full machine Electro Magnetic Compatibility under airborne equipment installation state, now many airborne equipments design typification complete, the difficulty that the electromagnetic compatibility problem occurred in test is rectified and improved, expend greatly.And from the helicopter conceptual level to engineering development stage, the means carry out effectively airborne equipment radiation electromagnetic compatibility, controlled in real time are limited, the radiation electromagnetic compatibility tension metrics clearly do not quantized, makes in electromagnetic compatibility process control, is difficult to reach monitoring object.
Summary of the invention
The object of the invention is to realize Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state quantitatively evaluating, proposing a kind of complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state method for quantitatively evaluating measured based on microwave frequency band electromagnetic radiation exposure.
According to the Electro Magnetic Compatibility general technical requirement that the Project R&D initial stage is determined, complete machine electromagnetic compatible requires to generally include: 1, form that want between complete machine each airborne equipment, subsystem can compatible operations, namely from compatible; 2, system self meets the adaptive requirement of electromagnetic environment; 3, for the restriction of whole system radiation-emitting.These three parts constitute the Electro Magnetic Compatibility of complete machine.
Electromagnetic compatibility sexual balance: when system meets above-mentioned three conditions simultaneously, system is in electromagnetic compatibility balance state.Any air environment must be in electromagnetic compatibility balance state, and different model requires different according to its general technical, needs the electromagnetic compatibility balance state reached also to be not quite similar.
The present invention proposes one is based upon on complete machine microwave frequency band radiation matrix basis, for evaluating the index of the good and bad degree of Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state, be designated as compatible quality of balance: the b of Helicopter System complete machine microwave frequency band electromagnetic radiation, rely on and the measurement in advance of microwave frequency band radiation intensity of cabin body zones of different is being gone straight up to airborne equipment, in conjunction with army's mark limit value, weighting matrix strategy is adopted to complete the calculating of the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation, solve and be difficult to carry out good tracking and supervision to complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state in the past, cannot the problem of improvement potentiality of evaluation system Electro Magnetic Compatibility.Consider the radiation characteristic of Helicopter System complete machine microwave frequency band, assess for Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state, improve specific aim and the validity of microwave frequency band Electro Magnetic Compatibility quantitative evaluation.
Based on the complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state method for quantitatively evaluating that microwave frequency band electromagnetic radiation exposure is measured, comprise following step:
The first step: divide helicopter personnel operating area;
Second step: the radiation intensity measuring helicopter-mounted equipment microwave frequency band in zones of different, obtains airborne equipment microwave frequency band radiation matrix;
3rd step: the microwave frequency band personnel operating area exposure limits obtaining m airborne equipment, obtains microwave frequency band personnel exposure limits matrix;
4th step: obtain the abundant value matrix of airborne equipment microwave frequency band radiation electromagnetic compatibility;
5th step: obtain each airborne equipment radiation weights of microwave frequency band, and obtain airborne equipment microwave frequency band radiation weight matrix;
6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
7th step: the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation obtained according to the 6th step, adjustment airborne equipment, optimization system radiation electromagnetic compatibility equilibrium state;
The present invention is based on airborne equipment different to each radiation contributions degree of fuselage, investigate the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation, complete airborne equipment adjustment, its advantage is:
(1) quantification of helicopter research and development proposal stage to engineering development stage radiation electromagnetic compatibility equilibrium state is achieved;
(2) for the real-time monitoring of systems radiate electromagnetic compatibility balance state provides evaluation measures;
(3) solve the radiation of equipment electromagnetic compatibility balance state be in the past difficult to system microwave frequency band and carry out good tracking and supervision, cannot the problem of improvement potentiality of evaluation system Electro Magnetic Compatibility;
(4) for airborne equipment adjusting and optimizing provides technical support.
Accompanying drawing explanation
Fig. 1 is Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state method for quantitatively evaluating process flow diagram;
Fig. 2 is used test platform feature of the present invention composition schematic diagram.
In figure:
1-computing machine, 2-measuring receiver, 3-attenuator, 4-log-periodic antenna.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
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 Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state, as shown in Figure 1, the electromagnetic compatibility balance state assessment carried out according to the method has the following step:
The first step: divide helicopter personnel operating area;
According to the zone of action of operating personnel in helicopter physical arrangement and helicopter flight, helicopter ground maintenance process, army mark GJB5313-2004 " electromagnetic radiation exposure restriction and measuring method " is adopted to divide helicopter fuselage and near zone, obtain helicopter personnel operating area, and difference called after: region 1, region 2, region 3, region n, n represent the quantity of zoning, n >=3.The division in region can consider according to helicopter self operational need, bonding properties characteristic, the fuselage near zone of cockpit area, crew module region and high powered antenna at least should be comprised in n region, in the present invention, high powered antenna refers to the airborne antenna being more than or equal to 50W, airborne antenna is arranged on fuselage, the fuselage near zone of high powered antenna radiation effect will be caused, so should be considered when carrying out Region dividing to its position near zone of installing.
Second step: the radiation intensity measuring helicopter-mounted equipment microwave frequency band in zones of different, obtains 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 are connected by wire successively.
Described measuring receiver 2 is the ESIB-40 model that German Luo De and Schwarz R & S company produce;
The DTS300300W model that described attenuator 3 is produced for ShangHai HuaXiang Computer Communication Engineering Co., Ltd;
Described log-periodic antenna 4 is the HL223 model that German Luo De and Schwarz R & S company produce;
Log-periodic antenna 4 is placed in region to be measured, helicopter-mounted equipment operationally, the microwave frequency band electromagnetic radiation of log-periodic antenna 4 pairs of airborne equipments receives, obtain microwave frequency band electromagnetic radiation signal, attenuator 3 pairs of microwave frequency band electromagnetic radiation signals are decayed, computing machine 1 control survey receiver 2 gathers the microwave frequency band electromagnetic radiation signal after decay, obtain the microwave frequency band electromagnetic radiation intensity of airborne equipment in this region, record microwave frequency band electromagnetic radiation intensity by computing machine 1.
Concrete steps are:
Step 201: adopt measuring table, measure the microwave frequency band electromagnetic radiation intensity of airborne equipment in each region, if Helicopter System has m airborne equipment, be specially:
Divide in conjunction with the helicopter personnel activity region obtained in the first step, the measuring system platform according to Fig. 2 carries out microwave frequency band radiation emission measurement to m airborne equipment, and the microwave frequency band electromagnetic radiation intensity collected is denoted as Tre.
Adopt measuring table, measure in region 1, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre 1, m, close m airborne equipment.The airborne equipment microwave frequency band electromagnetic radiation intensity completing region 1 is measured.
Adopt measuring table, measure in region 2, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre 2, m, close m airborne equipment.The airborne equipment microwave frequency band electromagnetic radiation intensity completing region 2 is measured.
……
In like manner, adopt measuring table, measure in the n of region, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre n,m, close m airborne equipment.The airborne equipment microwave frequency band electromagnetic radiation intensity completing region n is measured.
Step 202: according to the measurement result obtained in step 201, set up airborne equipment microwave frequency band radiation matrix T:
3rd step: the microwave frequency band personnel operating area exposure limits obtaining m airborne equipment, obtains microwave frequency band personnel exposure limits matrix;
According to the regulation to the restriction of personnel operating area electromagnetic radiation exposure in GJB5313-2004 " electromagnetic radiation exposure restriction and measuring method ", obtain the microwave frequency band personnel operating area exposure limits of m airborne equipment.The electromagnetic radiation of microwave frequency band comprises continuous wave, pulsating wave two kinds of emission types, in GJB5313-2004 to the defining method of operating area microwave frequency band continuous wave, pulsating wave exposure limits is:
(1) exposure limits that microwave frequency band continuous wave in operating area exposes continuously 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 is 300MHz ~ 400MHz, exposure limits is 61.4v/m;
When frequency is 400MHz ~ 2 × 10 3during MHz, exposure limits is
When frequency is 2 × 10 3mHz ~ 3 × 10 5during MHz, exposure limits is 137.3v/m;
(3) exposure limits that microwave frequency band pulsating wave in operating area exposes continuously 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 is 300MHz ~ 400MHz, exposure limits is 43.42v/m;
When frequency is 400MHz ~ 2 × 10 3during MHz, exposure limits is
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 the defining method of above-mentioned exposure limits, the microwave frequency band personnel operating area exposure limits obtaining 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.
In order to corresponding with the airborne equipment microwave frequency band radiation matrix obtained in step 202, divide in conjunction with the helicopter personnel operating area obtained in the first step, set up microwave frequency band personnel exposure limits matrix E:
4th step: obtain the abundant value matrix of airborne equipment microwave frequency band radiation electromagnetic compatibility;
Step 401: the microwave frequency band personnel exposure limits matrix E obtained in the airborne equipment microwave frequency band radiation matrix T obtained in step 202 and the 3rd step is n × m rank matrix, carries out matrix and subtracts 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,jelement for corresponding in matrix S:
Step 402: row normalized is respectively entered to each element in matrix S:
δ i , j ′ = δ i , j Exp l j
Wherein, δ ' i, jrepresent δ i,jvalue after normalized, Expl jthe value of arbitrary element in jth row in representing matrix E, obtains the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility:
If there is negative value element in the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility, according to Bucket Principle, then make all values on the occasion of element be 0, matrix S ' in only retain negative value element.
In the present invention, with the element δ ' in the abundant value matrix S ' of airborne equipment microwave frequency band radiation electromagnetic compatibility i,jweigh the radiation abundant value of different airborne equipment radiation to helicopter different work region.
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 in 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 in GJB72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term ", the key category classification principle of subsystem and equipment: all be arranged on intrasystem, or the subsystem relevant to system and equipment should be delimited as EMC(electromagnetic compatibility) a certain class in crucial class.The impact that these divisions may cause based on electromagnetic interference (EMI), failure rate or the degradation program for the task of appointment.Following three kinds can be divided into:
This kind of electromagnetic compatibility problem of (1) I class may cause that the lost of life, delivery vehicle are impaired, tasks interrupt, transmitting of a high price postpones or unacceptable system effectiveness declines;
This kind of electromagnetic compatibility problem of (2) II class may cause delivery vehicle fault, system effectiveness to decline, and causes task to complete;
This kind of electromagnetic compatibility problem of (3) III class may cause noise, slight uncomfortable or performance degradation, but can not reduce the expection validity of system.
In the present invention, in order to carry out digitizing calculating, adopt analytical hierarchy process strategy, the electromagnetic compatibility classification indicators obtaining the airborne equipment meeting I class are AA; The electromagnetic compatibility classification indicators obtaining the airborne equipment meeting II class are AB; The electromagnetic compatibility classification indicators obtaining the airborne equipment meeting III class are AC, 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, with electromagnetic compatibility classification indicators EML, the impact of different airborne equipment on system EMC is described.
Step 502: obtain electromagnetic compatibility classified weight;
To m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml mcarry out data processing, obtain airborne equipment electromagnetic compatibility classified 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 1represent the electromagnetic compatibility classification indicators eml of first airborne equipment 1weight;
Em 2represent the electromagnetic compatibility classification indicators eml of second airborne equipment 2weight;
……
Em mrepresent the electromagnetic compatibility classification indicators eml of m airborne equipment mweight;
In the present invention, weigh the influence degree of different airborne equipment electromagnetic compatibility harm to personnel operating area radioactive exposure value with airborne equipment electromagnetic compatibility classified weight EM.
Step 503: obtain personnel operating area classified 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 processing, obtains personnel operating area classified weight
Step 504: adopt tax power relation W=HA × EM, to the airborne equipment electromagnetic compatibility classified weight EM={em obtained in step 502 1, em 2..., em mand step 503 in the personnel operating area classified weight that obtains process, obtain airborne equipment microwave frequency band radiation weight matrix W, wherein, w i, jelement for corresponding in matrix W:
In the present invention, usually weigh the radiation effect degree of different airborne equipment radiation to helicopter different work region with the unit in airborne equipment microwave frequency band radiation weight matrix W.
6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
Adopt respective items weighted sum strategy data processing is carried out to the element in the airborne equipment microwave frequency band radiation weight matrix W obtained in the abundant value matrix S of the microwave frequency band radiation electromagnetic compatibility obtained in the 4th step and the 5th step, obtains the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation.
7th step: the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation obtained according to the 6th step, adjustment airborne equipment, optimization system radiation electromagnetic compatibility equilibrium state;
In the present invention, weigh the quality of Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state with the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation.The compatible quality of balance b of electromagnetic radiation larger (b≤1), then illustrate that the harm of complete machine microwave frequency band Radiation On Human person is lower; Otherwise compatible quality of balance b is less for Helicopter System complete machine microwave frequency band electromagnetic radiation, then illustrate that the harm of complete machine microwave frequency band Radiation On Human person is higher.
If b >=0, represent that Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state meets military standard of China, can not impact personnel's radiation safety of perform region;
If b < 0, represent that Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state does not meet military standard of China, will impact personnel's radiation safety of operating area, now, according to position and the size of negative value element in the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility, Electro Magnetic Compatibility rectification is carried out to helicopter-mounted equipment, and second step is repeated to the 6th step to the Helicopter System after rectification, until compatible quality of balance b >=0 of Helicopter System complete machine microwave frequency band electromagnetic radiation, namely Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state meets military standard of China.
embodiment
Set five airborne equipments to impact helicopter perform region personnel's radiation safety, utilize means of testing to obtain five airborne equipments radiation intensity value of three personnel operating areas below driving cabin, crew module and tail boom respectively, result is as shown in the table:
Table 1 microwave frequency band radiation intensity test result
According to the factor such as operating characteristic, radiation mode of five airborne equipments, adopt corresponding computing formula, calculate the microwave frequency band personnel operating area exposure limits of each airborne equipment, result is as shown in the table:
Table 2 microwave frequency band radiation intensity limit value
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
Adopt difference strategy S=E-T solve matrix S and be normalized each element in matrix S, obtain the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility:
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 &prime; = 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 in 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 classified weight, adopt 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
In conjunction with the computing formula of the compatible quality of balance b of microwave frequency band electromagnetic radiation 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 display b > 0 of the compatible quality of balance b of microwave frequency band electromagnetic radiation, illustrates that this Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility equilibrium state meets military standard of China, can not impact operating area personal security.

Claims (2)

1. based on microwave frequency band radioactive exposure measure a device layout method of adjustment, for microwave frequency band refer to 300MHz ~ 3 × 10 5mHz, method comprises following step:
The first step: divide helicopter personnel operating area;
According to the zone of action of operating personnel in helicopter physical arrangement and helicopter flight, helicopter ground maintenance process, army's mark GJB 5313-2004 " electromagnetic radiation exposure restriction and measuring method " is adopted to divide helicopter fuselage and near zone, obtain helicopter personnel operating area, and difference called after: region 1, region 2, region 3, region n, n represent the quantity of zoning, n >=3; The fuselage near zone of cockpit area, crew module region and high powered antenna at least should be comprised in n region;
Second step: the radiation intensity measuring helicopter-mounted equipment microwave frequency band in zones of different, obtains 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 are connected by wire successively;
Log-periodic antenna is placed in region to be measured, helicopter-mounted equipment operationally, the microwave frequency band electromagnetic radiation of log-periodic antenna to airborne equipment receives, obtain microwave frequency band electromagnetic radiation signal, attenuator is decayed to microwave frequency band electromagnetic radiation signal, computer controlled measurement receiver gathers the microwave frequency band electromagnetic radiation signal after decay, obtain the microwave frequency band electromagnetic radiation intensity of airborne equipment in this region, 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 region, if Helicopter System has m airborne equipment, be specially:
Adopt measuring table, measure in region 1, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre 1, m, close m airborne equipment; The airborne equipment microwave frequency band electromagnetic radiation intensity completing region 1 is measured;
Adopt measuring table, measure in region 2, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre 2, m, close m airborne equipment; The airborne equipment microwave frequency band electromagnetic radiation intensity completing region 2 is measured;
……
In like manner, adopt measuring table, measure in the n of region, open first airborne equipment, measure the microwave frequency band electromagnetic radiation intensity obtaining 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 obtaining 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 obtaining m airborne equipment, be designated as Tre n,m, close m airborne equipment; The airborne equipment microwave frequency band electromagnetic radiation intensity completing region n is measured;
Step 202: according to the measurement result obtained in step 201, set up airborne equipment microwave frequency band radiation matrix T:
3rd step: the microwave frequency band personnel operating area exposure limits obtaining m airborne equipment, obtains microwave frequency band personnel exposure limits matrix;
The electromagnetic radiation of microwave frequency band comprises continuous wave, pulsating wave two kinds of emission types, determine the microwave frequency band type of m airborne equipment, obtain the microwave frequency band personnel operating area exposure limits of airborne equipment, in GJB 5313-2004 to the defining method of operating area microwave frequency band continuous wave, pulsating wave exposure limits be:
(1) exposure limits that microwave frequency band continuous wave in operating area exposes continuously 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 is 300MHz ~ 400MHz, exposure limits is 61.4V/m;
When frequency is 400MHz ~ 2 × 10 3during MHz, exposure limits is
When frequency is 2 × 10 3mHz ~ 3 × 10 5during MHz, exposure limits is 137.3V/m;
(3) exposure limits that microwave frequency band pulsating wave in operating area exposes continuously 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 is 300MHz ~ 400MHz, exposure limits is 43.42V/m;
When frequency is 400MHz ~ 2 × 10 3during MHz, exposure limits is
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 obtaining 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:
4th step: obtain the abundant value matrix of airborne equipment microwave frequency band radiation electromagnetic compatibility;
Step 401: the microwave frequency band personnel exposure limits matrix E obtained in the airborne equipment microwave frequency band radiation matrix T obtained in step 202 and the 3rd step is n × m rank matrix, carries out matrix and subtracts 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,jelement for corresponding in matrix S:
Step 402: row normalized is respectively entered to each element in matrix S:
&delta; i , j &prime; = &delta; i , j Expl j
Wherein, δ ' i,jrepresent δ i,jvalue after normalized, Expl jthe value of arbitrary element in jth row in representing matrix E, obtains the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility:
If there is negative value element in the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility, according to Bucket Principle, then make all values on the occasion of element be 0, matrix S ' in only retain negative value element;
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 in GJB 72A-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 GJB 72A-2002 " electromagnetic interference (EMI) and electromagnetic compatibility term ", the key classification of subsystem and equipment is divided into following three classes:
This kind of electromagnetic compatibility problem of (1) I class may cause that the lost of life, delivery vehicle are impaired, tasks interrupt, transmitting of a high price postpones or unacceptable system effectiveness declines;
This kind of electromagnetic compatibility problem of (2) II class may cause delivery vehicle fault, system effectiveness to decline, and causes task to complete;
This kind of electromagnetic compatibility problem of (3) III class may cause noise, slight uncomfortable or performance degradation, but can not reduce the expection validity of system;
Adopt analytical hierarchy process strategy, the electromagnetic compatibility classification indicators obtaining the airborne equipment meeting I class are AA; The electromagnetic compatibility classification indicators obtaining the airborne equipment meeting II class are AB; The electromagnetic compatibility classification indicators obtaining the airborne equipment meeting III class are AC, then the electromagnetic compatibility classification indicators of m airborne equipment are eml s = AA AB AC , And AA > AB > AC, 1≤s≤m;
Step 502: obtain electromagnetic compatibility classified weight;
To m airborne equipment electromagnetic compatibility classification indicators EML={eml 1, eml 2..., eml mcarry out data processing, obtain airborne equipment electromagnetic compatibility classified weight EM={em 1, em 2..., em m;
Wherein: em r = eml r &Sigma; q = 1 m eml q &times; 100 % , 1≤r≤m，1≤q≤m；
Em 1represent the electromagnetic compatibility classification indicators eml of first airborne equipment 1weight;
Em 2represent the electromagnetic compatibility classification indicators eml of second airborne equipment 2weight;
……
Em mrepresent the electromagnetic compatibility classification indicators eml of m airborne equipment mweight;
Step 503: obtain personnel operating area classified weight;
The classification indicators HAL={1 of n personnel operating area, 1 ..., 1}, obtains personnel operating area classified weight HA = { 1 n , 1 n , . . . , 1 n } T ;
Step 504: adopt tax power relation W=HA × EM, to the airborne equipment electromagnetic compatibility classified weight EM={em obtained in step 502 1, em 2..., em mand step 503 in the personnel operating area classified weight that obtains process, obtain airborne equipment microwave frequency band radiation weight matrix W, wherein, w i,jelement for corresponding in matrix W:
6th step: obtain the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation;
Adopt respective items weighted sum strategy data processing is carried out to the element in the airborne equipment microwave frequency band radiation weight matrix W obtained in the abundant value matrix S' of the microwave frequency band radiation electromagnetic compatibility obtained in the 4th step and the 5th step, obtains the compatible quality of balance b of Helicopter System complete machine microwave frequency band electromagnetic radiation;
7th step: the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation obtained according to the 6th step, adjustment airborne equipment, optimization system radiation electromagnetic compatibility quality of balance;
If b >=0, represent that the compatible quality of balance of Helicopter System complete machine microwave frequency band electromagnetic radiation meets military standard of China, can not impact personnel's radiation safety of perform region;
If b < 0, represent that Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility quality of balance does not meet military standard of China, will impact personnel's radiation safety of operating area, now, according to position and the size of negative value element in the abundant value matrix S' of airborne equipment microwave frequency band radiation electromagnetic compatibility, Electro Magnetic Compatibility rectification is carried out to helicopter-mounted equipment, and second step is repeated to the 6th step to the Helicopter System after rectification, until compatible quality of balance b >=0 of Helicopter System complete machine microwave frequency band electromagnetic radiation, namely Helicopter System complete machine microwave frequency band radiation electromagnetic compatibility quality of balance meets military standard of China.
2. a kind of device layout method of adjustment measured based on microwave frequency band radioactive exposure according to claim 1, described high powered antenna is the airborne antenna being more than or equal to 50W.
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