CN104182624A - Integrated modular avionics system service capability assessment method - Google Patents
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Abstract
The invention provides an integrated modular avionics system service capability assessment method which includes the steps of identifying and classifying resources provided by an IMA (Integrated Modular Avionics) platform, performing independence identification and quantification on resources of the IMA (Integrated Modular Avionics) platform, setting up an IMA (Integrated Modular Avionics) platform resource matrix, obtaining the maximum service capability of the IMA (Integrated Modular Avionics) platform from the IMA (Integrated Modular Avionics) platform matrix, determining whether an IMA (Integrated Modular Avionics) system satisfies the service capability demands of avionics system functions, resetting elements in a corresponding resource matrix to zero when resource failure occurs or reducing values according to the degradation of resources, repeating the determination process, and assessing the service capabilities of the IMA (Integrated Modular Avionics) platform after resource failure. The integrated modular avionic system service capability assessment method is capable of assessing the service capabilities of the IMA (Integrated Modular Avionics) platform with resource sharing characteristics by quantifying the service capabilities of the system, thereby helping to maximize the resource utilization of the system. Furthermore, the integrated modular avionic system service capability assessment method helps system integrators reasonably plan the variety and quantity of residence functions of the IMA (Integrated Modular Avionics) platform, thereby enhancing the 'failure-safety' capability of the avionics system.
Description
Technical field
The invention belongs to comprehensively modularized avionics field, particularly relate to a kind of comprehensively modularized avionics system service ability appraisal procedure.
Background technology
Comprehensively modularized aviation electronics (IMA, Integrated Modular Avionics) system should be used for realizing corresponding avionics system function by resident different subregion on hardware resource platform, brought the reduction of manufacture, maintenance cost, make IMA system start gradually to substitute the first-selected avionics framework that traditional association type avionics system becomes passenger plane of new generation, be applied to Boeing 787, Air Passenger A380 and COMAC C919 aircraft.
Along with the development of technology and improving constantly of avionics system demand, increasing avionics system function is integrated into IMA platform, therefore the resident subregion number of applications of IMA platform and kind, also in continuous increase, make the application of different safety-critical grades can share identical resource.Under IMA system architecture, the realization of each concrete systemic-function depends on the service ability of IMA platform itself, and existing service ability evaluation method is only carried out for specific avionics function, as the performance evaluation for systems such as navigation, communication, collision avoidances, cannot complete the service ability assessment of IMA system, thereby give the integrated difficulty of having brought of avionics system, make system integration manufacturer cannot accurately estimate the service ability of IMA platform, can only take conservative strategy, result has caused the waste of system resource, has improved the cost of design, manufacture and the system integration.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of comprehensively modularized avionics system service ability appraisal procedure.
In order to achieve the above object, comprehensively modularized avionics system service ability appraisal procedure provided by the invention comprises the following step of carrying out in order:
Step 1): first the available resource of IMA platform is confirmed, divided;
Step 2): each resource of IMA platform is carried out to independence confirmation and quantification treatment;
Step 3): set up IMA platform resource matrix;
Step 4): the maximum service ability that obtains IMA platform from above-mentioned IMA platform resource matrix;
Step 5): judge whether IMA system meets the service ability demand of avionics system function:
Step 6: when there is resource failed, the element zero setting in corresponding resource matrix, or reduce numerical value, repeating step 5 according to the degradation situation of resource) decision process, realizes the assessment to the IMA platform service ability after resource failed; When not there is not resource failed, illustrate that assessment completes, this flow process so far finishes.
In step 1) in, described IMA platform resource is mainly divided into: computational resource, storage resources and the communication resource; Wherein computational resource comprises: central processing unit, sensor front end processor; Storage resources comprises: the data-carrier store of the running memory of subregion application, subregion application and the config memory of subregion application; The communication resource comprises: communication link, virtual link, communication port and credit value.
In step 2) in, the independence confirmation means of described IMA platform resource comprise that physical isolation is confirmed and logic isolation is confirmed two kinds; For different resource class, approved isolation method is as follows; For processor resource, adopt the physical isolation mode of polycaryon processor or multiprocessor IMA platform, between its each processor/processing unit, there is definite physical isolation border, single inefficacy can not have influence on the processing power of other parts; And the logic isolation mode of subregion isolation on uniprocessor, divide to reach the isolation to each resident avionics system function by the access rights time of carrying out to processor; For storage resources, adopt the physical isolation mode of physical address isolation, the logic isolation mode by memory management unit to virtual address management; The communication resource adopts the logic isolation mode of virtual link technology, and the physical isolation mode of multiport technology.
In step 2) in, described quantification treatment is the capability evaluation that IMA platform resource is quantized; For computational resource, using 1,000,000 instruction numbers the carried out second assessment unit as its computing power; For storage resources, using bit as its storage capacity assessment unit; For the communication resource, using transmission byte number per second as its data transmissions force estimation unit.
In step 3) in, described IMA platform resource matrix is:
The row of resource matrix have represented m different resource class, and the row of resource matrix has represented n standalone module of different classes of resource, each the element α in resource matrix
11represent the service ability of the available quantification of each resource module.
In step 4) in, the method for the described maximum service ability of IMA platform that obtains from IMA platform resource matrix is:
From each row of resource matrix, choosing 1 is not the resource collection P[α that 0 element forms
1iα
2kα
3m] be called a minimum service unit; In resource matrix, all nonoverlapping minimum service unit number becomes the maximum service ability of IMA platform.
In step 5) in, the method whether described judgement IMA system meets the service ability demand of avionics system function is:
For concrete avionics system function f
i, its resource requirement set to IMA platform is Q[β
1β
2β
3]; When the required resource of avionics system function is indivisible, when there being minimum service unit P
i, to arbitrary element α
ij>=β
itime, judge that IMA system meets avionics system function f
iservice ability demand; When the required resource of avionics function can be assigned to different resource module, for avionics system function f
k, when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=β
itime, judge that IMA system meets avionics system function f
kservice ability demand, otherwise IMA system can not meet avionics system function f
kservice ability demand;
When many avionics systems function resides in same IMA platform, for avionics system function set F[f
p, f
r, f
t...], its resource requirement set to IMA platform is [Q
i, Q
k... ], when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=∑ β
i, meet each avionics system function simultaneously resource platform whether during alienable demand, judge that IMA system meets the service ability demand of avionics system function set F, otherwise IMA system do not met to the service ability demand of avionics system function set F.
The advantage that comprehensively modularized avionics system service ability appraisal procedure provided by the invention has is:
Solve the service ability evaluation problem for the IMA platform of resource sharing characteristic, the service ability of system has been quantized, contributed to the resource utilization of the system that maximizes;
Solve the IMA platform service capability evaluation problem under part resource failed condition, contributed to system integration manufacturer make rational planning for resident functions kind and the quantity of IMA platform, improved " inefficacy-safety " ability of avionics system.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of comprehensively modularized avionics system service ability appraisal procedure provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, comprehensively modularized avionics system service ability appraisal procedure provided by the invention is elaborated.
As shown in Figure 1, comprehensively modularized avionics system service ability appraisal procedure provided by the invention comprises the following step of carrying out in order:
Step 1): first the available resource of IMA platform is confirmed, divided; IMA platform resource is mainly divided into: computational resource, storage resources and the communication resource; Wherein computational resource comprises: central processing unit, sensor front end processor etc.; Storage resources comprises: the data-carrier store of the running memory of subregion application, subregion application and the config memory of subregion application etc.; The communication resource comprises: communication link, virtual link, communication port and credit value etc.;
Step 2): each resource of IMA platform is carried out to independence confirmation and quantification treatment; The object that independence is confirmed is to reduce the coupling of resource, is convenient to the system service ability after losing efficacy to carry out analysis and evaluation; The assessment that the result of quantification treatment is convenient to quantize; The independence confirmation means of IMA platform resource comprise that physical isolation is confirmed and logic isolation is confirmed two kinds; For different resource class, approved isolation method is as follows; For processor resource, adopt the physical isolation mode of polycaryon processor or multiprocessor IMA platform, between its each processor/processing unit, there is definite physical isolation border, single inefficacy can not have influence on the processing power of other parts; And the logic isolation mode of subregion isolation on uniprocessor, divide to reach the isolation to each resident avionics system function by the access rights time of carrying out to processor; For storage resources, adopt the physical isolation mode of physical address isolation, the logic isolation mode by memory management unit to virtual address management; The communication resource adopts the logic isolation mode of virtual link technology, and the physical isolation mode of multiport technology.
Quantification treatment is the capability evaluation that IMA platform resource is quantized; For computational resource, using 1,000,000 instruction numbers (Million Instructions Per Second, MIPS) the carried out second assessment unit as its computing power; For storage resources, using bit (bit) as its storage capacity assessment unit; For the communication resource, using transmission byte number per second (bps) as its data transmissions force estimation unit;
Step 3): set up IMA platform resource matrix;
The row of resource matrix have represented m different resource class (processing, communication, storage etc.), and the row of resource matrix has represented n standalone module of different classes of resource, each the element α in resource matrix
11represent the service ability of the available quantification of each resource module;
Step 4): the maximum service ability that obtains IMA platform from above-mentioned IMA platform resource matrix;
From each row of resource matrix, choosing 1 is not the resource collection P[α that 0 element forms
1iα
2kα
3m] be called a minimum service unit; In resource matrix, all nonoverlapping minimum service unit number becomes the maximum service ability of IMA platform;
Step 5): judge whether IMA system meets the service ability demand of avionics system function:
For concrete avionics system function f
i, its resource requirement set to IMA platform is Q[β
1β
2β
3]; When the required resource of avionics system function is indivisible, when there being minimum service unit P
i, to arbitrary element α
ij>=β
itime, judge that IMA system meets avionics system function f
iservice ability demand; When the required resource of avionics function can be assigned to different resource module, for avionics system function f
k, when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=β
itime, judge that IMA system meets avionics system function f
kservice ability demand, otherwise IMA system can not meet avionics system function f
kservice ability demand;
When many avionics systems function resides in same IMA platform, for avionics system function set F[f
p, f
r, f
t...], its resource requirement set to IMA platform is [Q
i, Q
k... ], when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=∑ β
i, meet each avionics system function simultaneously resource platform whether during alienable demand, judge that IMA system meets the service ability demand of avionics system function set F, otherwise IMA system do not met to the service ability demand of avionics system function set F.
Step 6: when there is resource failed, the element zero setting in corresponding resource matrix, or reduce numerical value, repeating step 5 according to the degradation situation of resource) decision process, realizes the assessment to the IMA platform service ability after resource failed; When not there is not resource failed, illustrate that assessment completes, this flow process so far finishes.
Comprehensively modularized avionics system service ability appraisal procedure provided by the invention can quantize the service ability of IMA system effectively, has improved the utilization factor of system resource, has reduced exploitation, development, the integrated cost of IMA system; The assessment of the service ability of system after part resource failed is contributed to system integration manufacturer make rational planning for resident functions kind and the quantity of IMA platform, improved " inefficacy-safety " ability of avionics system, improved the flight safety level of aircraft.
Claims (7)
1. a comprehensively modularized avionics system service ability appraisal procedure, is characterized in that: described comprehensively modularized avionics system service ability appraisal procedure comprises the following step of carrying out in order:
Step 1): first the available resource of IMA platform is confirmed, divided;
Step 2): each resource of IMA platform is carried out to independence confirmation and quantification treatment;
Step 3): set up IMA platform resource matrix;
Step 4): the maximum service ability that obtains IMA platform from above-mentioned IMA platform resource matrix;
Step 5): judge whether IMA system meets the service ability demand of avionics system function:
Step 6: when there is resource failed, the element zero setting in corresponding resource matrix, or reduce numerical value, repeating step 5 according to the degradation situation of resource) decision process, realizes the assessment to the IMA platform service ability after resource failed; When not there is not resource failed, illustrate that assessment completes, this flow process so far finishes.
2. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 1) in, described IMA platform resource is mainly divided into: computational resource, storage resources and the communication resource; Wherein computational resource comprises: central processing unit, sensor front end processor; Storage resources comprises: the data-carrier store of the running memory of subregion application, subregion application and the config memory of subregion application; The communication resource comprises: communication link, virtual link, communication port and credit value.
3. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 2) in, the independence confirmation means of described IMA platform resource comprise that physical isolation is confirmed and logic isolation is confirmed two kinds; For different resource class, approved isolation method is as follows; For processor resource, adopt the physical isolation mode of polycaryon processor or multiprocessor IMA platform, between its each processor/processing unit, there is definite physical isolation border, single inefficacy can not have influence on the processing power of other parts; And the logic isolation mode of subregion isolation on uniprocessor, divide to reach the isolation to each resident avionics system function by the access rights time of carrying out to processor; For storage resources, adopt the physical isolation mode of physical address isolation, the logic isolation mode by memory management unit to virtual address management; The communication resource adopts the logic isolation mode of virtual link technology, and the physical isolation mode of multiport technology.
4. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 2) in, described quantification treatment is the capability evaluation that IMA platform resource is quantized; For computational resource, using 1,000,000 instruction numbers the carried out second assessment unit as its computing power; For storage resources, using bit as its storage capacity assessment unit; For the communication resource, using transmission byte number per second as its data transmissions force estimation unit.
5. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 3), described IMA platform resource matrix is:
The row of resource matrix have represented m different resource class, and the row of resource matrix has represented n standalone module of different classes of resource, each the element α in resource matrix
11represent the service ability of the available quantification of each resource module.
6. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 4), the method for the described maximum service ability of IMA platform that obtains from IMA platform resource matrix is:
From each row of resource matrix, choosing 1 is not the resource collection P[α that 0 element forms
1iα
2kα
3m] be called a minimum service unit; In resource matrix, all nonoverlapping minimum service unit number becomes the maximum service ability of IMA platform.
7. comprehensively modularized avionics system service ability appraisal procedure according to claim 1, is characterized in that: in step 5) in, the method whether described judgement IMA system meets the service ability demand of avionics system function is:
For concrete avionics system function f
i, its resource requirement set to IMA platform is Q[β
1β
2β
3]; When the required resource of avionics system function is indivisible, when there being minimum service unit P
i, to arbitrary element α i
j>=β
itime, judge that IMA system meets avionics system function f
iservice ability demand; When the required resource of avionics function can be assigned to different resource module, for avionics system function f
k, when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=β
itime, judge that IMA system meets avionics system function f
kservice ability demand, otherwise IMA system can not meet avionics system function f
kservice ability demand;
When many avionics systems function resides in same IMA platform, for avionics system function set F[f
p, f
r, f
t...], its resource requirement set to IMA platform is [Q
i, Q
k... ], when there being minimum service unit set [P
i, P
k... ] meet arbitrary element ∑ α
ij>=∑ β
i, meet each avionics system function simultaneously resource platform whether during alienable demand, judge that IMA system meets the service ability demand of avionics system function set F, otherwise IMA system do not met to the service ability demand of avionics system function set F.
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Cited By (8)
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| CN105608247A (en) * | 2015-11-11 | 2016-05-25 | 北京航空航天大学 | IMA resource security analysis-oriented AADL to ECPN model conversion method |
| CN105959090A (en) * | 2016-06-16 | 2016-09-21 | 国网信息通信产业集团有限公司 | Service processing method and device of power wireless private network |
| CN106341276A (en) * | 2016-11-02 | 2017-01-18 | 中国航空无线电电子研究所 | IMA system configuration generating method based on constraint satisfaction theory |
| CN107766650A (en) * | 2017-10-20 | 2018-03-06 | 中国民航大学 | The dynamic capability response avionics system vision simulation instrument implementation method of oriented mission |
| CN107908892A (en) * | 2017-11-28 | 2018-04-13 | 中国民航大学 | A kind of enhancing visual system Safety Analysis Method based on model |
| CN112884337A (en) * | 2021-03-04 | 2021-06-01 | 中国航空工业集团公司西安航空计算技术研究所 | Method for defining generalized IMA platform typical failure condition directory |
| CN114741133A (en) * | 2022-04-21 | 2022-07-12 | 中国航空无线电电子研究所 | Comprehensive modularized avionics system resource allocation and evaluation method based on model |
| CN117593171A (en) * | 2024-01-15 | 2024-02-23 | 西安甘鑫科技股份有限公司 | Image acquisition, storage and processing method based on FPGA |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608247B (en) * | 2015-11-11 | 2018-08-28 | 北京航空航天大学 | AADL to ECPN model conversion methods towards the analysis of IMA resource resource securities |
| CN105608247A (en) * | 2015-11-11 | 2016-05-25 | 北京航空航天大学 | IMA resource security analysis-oriented AADL to ECPN model conversion method |
| CN105959090A (en) * | 2016-06-16 | 2016-09-21 | 国网信息通信产业集团有限公司 | Service processing method and device of power wireless private network |
| CN106341276A (en) * | 2016-11-02 | 2017-01-18 | 中国航空无线电电子研究所 | IMA system configuration generating method based on constraint satisfaction theory |
| CN106341276B (en) * | 2016-11-02 | 2019-10-29 | 中国航空无线电电子研究所 | A kind of IMA system configuration generation method based on constraint satisfaction theory |
| CN107766650A (en) * | 2017-10-20 | 2018-03-06 | 中国民航大学 | The dynamic capability response avionics system vision simulation instrument implementation method of oriented mission |
| CN107766650B (en) * | 2017-10-20 | 2021-07-06 | 中国民航大学 | Task-oriented dynamic capability response avionics system visual simulation tool implementation method |
| CN107908892A (en) * | 2017-11-28 | 2018-04-13 | 中国民航大学 | A kind of enhancing visual system Safety Analysis Method based on model |
| CN107908892B (en) * | 2017-11-28 | 2021-07-06 | 中国民航大学 | Enhanced vision system security analysis method based on model |
| CN112884337A (en) * | 2021-03-04 | 2021-06-01 | 中国航空工业集团公司西安航空计算技术研究所 | Method for defining generalized IMA platform typical failure condition directory |
| CN112884337B (en) * | 2021-03-04 | 2024-01-16 | 中国航空工业集团公司西安航空计算技术研究所 | Method for defining typical failure condition catalog of generalized IMA platform |
| CN114741133A (en) * | 2022-04-21 | 2022-07-12 | 中国航空无线电电子研究所 | Comprehensive modularized avionics system resource allocation and evaluation method based on model |
| CN114741133B (en) * | 2022-04-21 | 2023-10-27 | 中国航空无线电电子研究所 | Comprehensive modularized avionics system resource allocation and assessment method based on model |
| CN117593171A (en) * | 2024-01-15 | 2024-02-23 | 西安甘鑫科技股份有限公司 | Image acquisition, storage and processing method based on FPGA |
| CN117593171B (en) * | 2024-01-15 | 2024-04-30 | 西安甘鑫科技股份有限公司 | Image acquisition, storage and processing method based on FPGA |
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