CN104699603B - The method for testing reliability and system of software and hardware system - Google Patents
The method for testing reliability and system of software and hardware system Download PDFInfo
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Abstract
The invention discloses a kind of method for testing reliability of software and hardware system and system, methods described includes：Obtain the integrated view of software and hardware system；Obtain corresponding with the temperature step of Comprehensive Experiment section each working method conversion sequence, and each working method conversion sequence working condition, task category and scale factor；The combined chance of each working method conversion sequence is generated, combined chance is normalized, the execution number of times of each working method conversion sequence is generated；According to default test loop number of times and the execution number of times of each working method conversion sequence, generation test carries out software reliability test with sequence.Implement the present invention, reliability testing is more accurately simulated actual use situation, truly reflect that software and hardware system, in actual use to operation change and the adaptability of environmental change, detects the software and hardware resultant fault occurred in actual use.
Description
【Technical field】
The present invention relates to reliability testing technical field, more particularly to a kind of method for testing reliability of software and hardware system
And system.
【Background technology】
With the raising of the intelligence degree of change system, the function of being realized by software is more and more, most of equipment system
System all be unable to do without software systems, originally by hard-wired algorithm and function such as DSP algorithm etc., gradually becomes and is combined firmly by software
Part realizes that partial function even realizes via pure software.Thus software defect causes the probability of thrashing also increasing
Greatly.The multitask software and hardware system (hereinafter referred to as " software intensive system ") being made up of the hardware for being embedded with software have hardware with
The feature that software is highly merged.
And reliability testing is carried out to software intensive system by existing reliability checking method, it is impossible to reference to software
Mission profile carries out reliability testing, it is impossible to effective detection software reliability.And when individually carrying out software reliability test, also without
Method precognition hardware platform environment (environmental factor such as temperature stress, humidity modification, vibration stress, electric stress) is to the shadow of software function
Ringing, thus be difficult to detect the influence of hardware platform environment causes software fault caused by performance change, equally can not be effective
Inspection software reliability.
Therefore, existing reliability checking method can not effective detection software and hardware system reliability, easily cause the system failure.
【The content of the invention】
Based on this, it is necessary to for existing reliability checking method can not effective detection software and hardware system reliability,
Easily causing system failure problem, there is provided a kind of method for testing reliability of software and hardware system and system.
A kind of method for testing reliability of software and hardware system, comprises the following steps：
Obtain the integrated view of software and hardware system；
Obtain each working method conversion sequence corresponding with each temperature step of the Comprehensive Experiment section, and each work
Make working condition, task category and the scale factor of mode conversion sequence；
In each temperature step, by the scale factor of each working method conversion sequence divided by each temperature step
The summation of the scale factor of corresponding all working mode conversion sequence, generates each working method conversion sequence in temperature step
Interior probability of happening；
Probability of happening of each working method conversion sequence in temperature step is obtained with corresponding temperature step described comprehensive
The product of the generalized section step probability in experiment section is closed, the combined chance of each working method conversion sequence is generated；
The combined chance of each working method conversion sequence is normalized, each working method conversion sequence is generated
Perform number of times；
According to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature step and respectively
The corresponding each working method conversion sequence of temperature step is converted to test sequence；
Software reliability test is carried out with sequence according to the test.
A kind of reliability test system of software and hardware system, including：
Integrated view acquisition module, the integrated view for obtaining software and hardware system；
Work state information acquisition module, it is corresponding with each temperature step of the Comprehensive Experiment section each for obtaining
Working method conversion sequence, and each working method conversion sequence working condition, task category and scale factor；
First probabilistic module, in each temperature step, the scale factor of each working method conversion sequence to be removed
With the summation of the scale factor of the corresponding all working mode conversion sequence of each temperature step, each working method is generated
Probability of happening of the conversion sequence in temperature step；
Second probabilistic module, for obtain probability of happening of each working method conversion sequence in temperature step with it is corresponding
The product of generalized section step probability of the temperature step in the Comprehensive Experiment section, generates each working method conversion sequence
Combined chance；
Number of times module is performed, is normalized for the combined chance to each working method conversion sequence, generation is each
The execution number of times of working method conversion sequence；
Test case module, for the execution number of times according to each working method conversion sequence and default test loop number of times,
Each temperature step and the corresponding each working method conversion sequence of each temperature step are converted into test sequence；
Reliability testing module, for carrying out software reliability test with sequence according to the test.
The method for testing reliability and system of above-mentioned software and hardware system, are cutd open by the compbined test for obtaining software and hardware system
Face；Obtain each working method conversion sequence corresponding with each temperature step of the Comprehensive Experiment section, and each work side
Working condition, task category and the scale factor of formula conversion sequence, and then the combined chance of each working method conversion sequence of generation,
The combined chance of each working method conversion sequence is normalized, the execution time of each working method conversion sequence is generated
Number；According to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature step and each temperature
The corresponding each working method conversion sequence of step is converted to test sequence, carries out software reliability test.Integrated view
The section generated for the hardware reliability experiment integrated environment section of task based access control section and comprehensive all kinds of environmental factors, based on comprehensive
The execution number of times that test profile obtains each working method conversion sequence is closed, and then generates test and carries out software reliability survey with sequence
Examination, enables reliability testing more accurately to simulate actual use situation, truly reflects the Shi Jishiyong process of software and hardware system
In to operation change and the adaptability of environmental change, detect the software and hardware resultant fault occurred in actual use.And then make
The inherent reliability equipped corresponding with software and hardware system is improved, and substantially reduces the input cost for equipping whole life cycle.
【Brief description of the drawings】
Fig. 1 is the schematic flow sheet of the method for testing reliability first embodiment of software and hardware system of the present invention；
Fig. 2 is the schematic flow sheet of the method for testing reliability second embodiment of software and hardware system of the present invention；
Fig. 3 be software and hardware system of the present invention method for testing reliability second embodiment in hardware reliability experiment integrate
The schematic diagram of environment section；
Fig. 4 is the structural representation of the reliability test system first embodiment of software and hardware system of the present invention；
Fig. 5 is the structural representation of the reliability test system second embodiment of software and hardware system of the present invention.
【Embodiment】
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail.
Referring to Fig. 1, Fig. 1 is the schematic flow sheet of the method for testing reliability of software and hardware system of the present invention.
The method for testing reliability of software and hardware system described in present embodiment, it may include following steps：
Step S101, obtains the integrated view of software and hardware system.
Step S102, obtains each working method conversion sequence corresponding with each temperature step of the Comprehensive Experiment section
Row, and each working method conversion sequence working condition, task category and scale factor.
Step S103, in each temperature step, by the scale factor of each working method conversion sequence divided by described every
The summation of the scale factor of the corresponding all working mode conversion sequence of individual temperature step, generates each working method conversion sequence
Probability of happening in temperature step.
Step S104, obtains probability of happening and corresponding temperature step of each working method conversion sequence in temperature step
The product of generalized section step probability in the Comprehensive Experiment section, generates the combined chance of each working method conversion sequence.
Step S105, the combined chance of each working method conversion sequence is normalized, and generates each working method
The execution number of times of conversion sequence.
Step S106, according to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature
Step and the corresponding each working method conversion sequence of each temperature step are converted to test sequence.
Step S107, software reliability test is carried out according to the test with sequence.
Present embodiment, integrated view is the hardware reliability examination of task based access control section and comprehensive all kinds of environmental factors
The section of integrated environment section generation is tested, the execution number of times of each working method conversion sequence is obtained based on integrated view, is entered
And generate test and software reliability test is carried out with sequence, reliability testing is more accurately simulated actual use situation,
Truly reflection software and hardware system is in actual use to operation change and the adaptability of environmental change, and detecting actually makes
The software and hardware resultant fault occurred in.And then the inherent reliability equipped corresponding with software and hardware system is improved,
Substantially reduce the input cost for equipping whole life cycle.
Wherein, for step S101, it is preferable that the integrated view is software reliability test mission profile and hard
Section set obtained by part reliability test integrated environment section comprehensive matching, sample temperature section is reference during comprehensive matching
Point.The integrated view, the correspondence software and hardware system storage can be previously generated.
Further, the software and hardware system can be multitask software and hardware system, it may include at least two mission profiles are (soft
Section used in part reliability testing).Each mission profile may include at least two task phases.
In one embodiment, can be according to the mission profile equipped corresponding with software and hardware system, according to the sequential of generation
The work event of each mission profile of the mounting platform of equipment is listed one by one, according to design documentation, equipment software is determined
System mode, marks the on-off state of each task phase equipment and the system mode of equipment software, formed task phase with
The corresponding relation of the system mode of equipment software.
Further, " working condition " in the system mode of equipment is decomposed, is decomposed into several working conditions,
Then the system mode of mark equipment software and the working condition of equipment software, form the system mode and work shape of equipment software
The corresponding relation of state.According to the relevant documentation of equipment, mode is operated to various working conditions and decomposed, working condition can be formed
With the corresponding relation of working method.
Further, by with testing crew, design and develop personnel, user representative and linked up, mission profile is each
The armament-related work mode of individual task phase is determined one by one, is formed the mapping of mission profile and working method, is cutd open according to task
Face and the mapping relations of working method, according to the continuity and relative independentability of mission profile task, are segmented.It will cut open
Decompose several task segments in face.
According to equipment software working method transition diagram, possible working method conversion sequence in each task phase is listed
(alternatively referred to as working condition conversion sequence), the corresponding working condition of each working method conversion sequence, task category and scale factor.
For step S102, the temperature step is the temperature step of synthesis section in the integrated view.It is described
Synthesis section is made up of one or more task phases of one or more mission profiles.
Preferably, the task category may include basic, conventional, optional three kinds of classifications.
In one embodiment, according to possible working method conversion sequence in each task phase prestored, obtain every
Possible working method conversion sequence is the corresponding working method of each temperature step in each task phase in individual temperature step
Conversion sequence.
For step S103, it is preferable that in each temperature step, the corresponding institute of each temperature step can be first obtained
There is the summation of the scale factor of working method conversion sequence, then make the scale factor of every working method conversion sequence respectively divided by institute
Summation is stated, probability of happening of each working method conversion sequence in temperature step is generated.
Further, can also be by the scale factor of each working method conversion sequence and institute in each temperature step
The scale factor for stating other working method conversion sequences each temperature step Nei substitutes into default new probability formula, generates each work
Make probability of happening of the mode conversion sequence in temperature step.
For step S104, it is preferable that the corresponding temperature step is the temperature where obtaining during the probability of happening
Step.
Preferably, generalized section step probability of the temperature step in the Comprehensive Experiment section is in the temperature step
All task steps task probability summation divided by all task phases in the integrated view task probability it is total
With the probable value generated.
For step S105, it is preferable that, can when the combined chance of each working method conversion sequence is normalized
The minimum combined chance of numerical value in the combined chance of each working method conversion sequence is inquired about, by each working method conversion sequence
The combined chance of combined chance divided by minimum, then round the execution number of times for generating each working method conversion sequence.
For step S106, the default test loop number of times is to carry out reliability testing to the software and hardware system to follow
Ring number of times.
Preferably, according to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature platform
Rank and the corresponding each working method conversion sequence of each temperature step are converted to after test sequence, each temperature in test loop
Spend the corresponding each working method conversion sequence of step execution total degree and, turn with each working method for being generated in step S105
The execution number of times for changing sequence is identical.
Further, each temperature step and the corresponding each working method conversion sequence of each temperature step are being converted into survey
During sequence on probation, it can be changed according to default transformation rule.The default transformation rule can by testing crew, design and develop people
Member or user representative preset.
For step S107, software according to the test can be carried out with sequence by the usual measuring technology of this area reliable
Property test.
In one embodiment, it is described software reliability test is carried out with sequence according to the test the step of in carry out
During reliability testing, in each test period, first task category in each temperature step of the test sequence has been tested
After corresponding all working mode conversion sequence, in the corresponding all works of rear task category in each temperature step described in re-test
Make mode conversion sequence.
In another embodiment, it is described software reliability test is carried out with sequence according to the test the step of in enter
During row reliability testing, in each test period, first task class in each temperature step of the test sequence has been tested
It is corresponding in rear task category one in each temperature step described in re-test after not corresponding working method conversion sequence
Working method conversion sequence.
In other embodiments, the step of carrying out software reliability test with sequence according to the test includes following step
Suddenly：
Each test period was divided into at least two test periods；
Within the first test period, first task category correspondence in each temperature step of the test sequence has been tested
All working mode conversion sequence after, in the corresponding all working side of rear task category in each temperature step described in re-test
Formula conversion sequence；
Within the second test period, first task category correspondence in each temperature step of the test sequence has been tested
A working method conversion sequence after, in the corresponding work side of rear task category in each temperature step described in re-test
Formula conversion sequence.
Referring to Fig. 2, Fig. 2 is the flow of the second embodiment of the method for testing reliability of the software and hardware system of the present invention
Schematic diagram.
The method for testing reliability of the software and hardware system of present embodiment and the difference of first embodiment are：Obtain
The step of integrated view for taking software and hardware system, comprises the following steps：
Step S201, obtains each mission profile of software and hardware system.
Step S202, according to environmental stress in hardware reliability experimental enviroment section in reliability determination and acceptance criteria with
Temperature profile is the principle of reference point, and each mission profile is synthesized to the integrated view of the software and hardware system.
Present embodiment, according to environmental stress in hardware reliability experimental enviroment section in reliability determination and acceptance criteria
Using temperature profile as the principle of reference point, each mission profile is synthesized to the integrated view of the software and hardware system, can be quick
Effectively comprehensive matching software reliability test mission profile tests integrated environment section with hardware reliability.
As shown in figure 3, the hardware reliability experimental enviroment section is reliability determination and acceptance criteria《GJ899A-
2009》The reliability test environmental stress of middle ram-air cooling class Ⅱ equipment designs the corresponding comprehensive ring of hardware reliability experiment
Border section.
Referring to Fig. 4, Fig. 4 is the structural representation of the reliability test system of software and hardware system of the present invention.
The reliability test system of software and hardware system described in present embodiment, it may include integrated view acquisition module
100th, work state information acquisition module 200, the first probabilistic module 300, the second probabilistic module 400, execution time digital-to-analogue 500, survey
Example module 600 and reliability testing module 700 on probation, wherein：
Integrated view acquisition module 100, the integrated view for obtaining software and hardware system.
Work state information acquisition module 200, it is corresponding with each temperature step of the Comprehensive Experiment section for obtaining
Each working method conversion sequence, and each working method conversion sequence working condition, task category and scale factor.
First probabilistic module 300, in each temperature step, by the scale factor of each working method conversion sequence
Divided by the summation of the scale factor of the corresponding all working mode conversion sequence of each temperature step, each work side of generation
Probability of happening of the formula conversion sequence in temperature step.
Second probabilistic module 400, for obtain probability of happening of each working method conversion sequence in temperature step with it is right
The product of generalized section step probability of the temperature step answered in the Comprehensive Experiment section, generates each working method conversion sequence
The combined chance of row.
Number of times module 500 is performed, is normalized for the combined chance to each working method conversion sequence, is generated
The execution number of times of each working method conversion sequence.
Test case module 600, for the execution number of times and default test loop time according to each working method conversion sequence
Number, test sequence is converted to by each temperature step and the corresponding each working method conversion sequence of each temperature step.
Reliability testing module 700, for carrying out software reliability test with sequence according to the test.
Present embodiment, integrated view is the hardware reliability examination of task based access control section and comprehensive all kinds of environmental factors
The section of integrated environment section generation is tested, the execution number of times of each working method conversion sequence is obtained based on integrated view, is entered
And generate test and software reliability test is carried out with sequence, reliability testing is more accurately simulated actual use situation,
Truly reflection software and hardware system is in actual use to operation change and the adaptability of environmental change, and detecting actually makes
The software and hardware resultant fault occurred in.And then the inherent reliability equipped corresponding with software and hardware system is improved,
Substantially reduce the input cost for equipping whole life cycle.
Wherein, for integrated view acquisition module 100, it is preferable that the integrated view is software reliability
Test assignment section tests the section set obtained by integrated environment section comprehensive matching with hardware reliability, is sampled during comprehensive matching
Temperature profile is reference point.
Further, the software and hardware system can be multitask software and hardware system, it may include at least two mission profiles are (soft
Section used in part reliability testing).Each mission profile may include at least two task phases.
In one embodiment, can be according to the mission profile equipped corresponding with software and hardware system, according to the sequential of generation
The work event of each mission profile of the mounting platform of equipment is listed one by one, according to design documentation, equipment software is determined
System mode, marks the on-off state of each task phase equipment and the system mode of equipment software, formed task phase with
The corresponding relation of the system mode of equipment software.
Further, " working condition " in the system mode of equipment is decomposed, is decomposed into several working conditions,
Then the system mode of mark equipment software and the working condition of equipment software, form the system mode and work shape of equipment software
The corresponding relation of state.According to the relevant documentation of equipment, mode is operated to various working conditions and decomposed, working condition can be formed
With the corresponding relation of working method.
Further, by with testing crew, design and develop personnel, user representative and linked up, mission profile is each
The armament-related work mode of individual task phase is determined one by one, is formed the mapping of mission profile and working method, is cutd open according to task
Face and the mapping relations of working method, according to the continuity and relative independentability of mission profile task, are segmented.It will cut open
Decompose several task segments in face.
According to equipment software working method transition diagram, list possible working method conversion sequence in each task phase,
The corresponding working condition of each working method conversion sequence, task category and scale factor.
For work state information acquisition module 200, the temperature step be the integrated view in synthesize section
Temperature step.The synthesis section is made up of one or more task phases of one or more mission profiles.
Preferably, the task category may include basic, conventional, optional three kinds of classifications.
In one embodiment, work state information acquisition module 200 can be used for according in each task phase prestored
Possible working method conversion sequence, obtains possible working method conversion sequence in each task phase in each temperature step
For the corresponding working method conversion sequence of each temperature step.
For the first probabilistic module 300, it is preferable that available in each temperature step, first obtain each temperature
The summation of the scale factor of the corresponding all working mode conversion sequence of step, then make the ratio of every working method conversion sequence because
Son difference divided by the summation, generate probability of happening of each working method conversion sequence in temperature step.
Further, the first probabilistic module 300 can be additionally used in each temperature step, and each working method is changed into sequence
The scale factor of other working method conversion sequences substitutes into default general in the scale factor of row and each temperature step
Rate formula, generates probability of happening of each working method conversion sequence in temperature step.
For the second probabilistic module 400, it is preferable that the corresponding temperature step is where obtaining during the probability of happening
Temperature step.
Preferably, generalized section step probability of the temperature step in the Comprehensive Experiment section is in the temperature step
All task steps task probability summation divided by all task phases in the integrated view task probability it is total
With the probable value generated.
For performing time digital-to-analogue 500, it is preferable that the combined chance of each working method conversion sequence is normalized
When, the minimum combined chance of numerical value in the combined chance of each working method conversion sequence can be inquired about, each working method is changed
The combined chance of sequence divided by the combined chance of minimum, then round the execution number of times for generating each working method conversion sequence.
For test case module 600, the default test loop number of times is to carry out reliability to the software and hardware system
The cycle-index of test.
Preferably, according to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature platform
Rank and the corresponding each working method conversion sequence of each temperature step are converted to after test sequence, each temperature in test loop
Spend execution total degree and the execution of each working method conversion sequence of generation of the corresponding each working method conversion sequence of step
Number of times is identical.
Further, each temperature step and the corresponding each working method conversion sequence of each temperature step are being converted into survey
During sequence on probation, it can be changed according to default transformation rule.The default transformation rule can by testing crew, design and develop people
Member or user representative preset.
For reliability testing module 700, it can be entered by the usual measuring technology of this area according to the test with sequence
Row software reliability test.
In one embodiment, reliability testing module 700, available in each test period, having tested the test
It is each described in re-test after the first corresponding all working mode conversion sequence of task category in each temperature step of sequence
In the corresponding all working mode conversion sequence of rear task category in temperature step.
In another embodiment, reliability testing module 700, available in each test period, tested it is described survey
It is every described in re-test in each temperature step of sequence on probation after the corresponding working method conversion sequence of first task category
In the corresponding working method conversion sequence of rear task category in individual temperature step.
In other embodiments, reliability testing module 700 may also include time division module, the first test module and
Two test modules, wherein：
The time division module is used to each test period being divided into at least two test periods；
First test module was used within the first test period, had tested each temperature platform of the test sequence
In rank after the corresponding all working mode conversion sequence of first task category, in rear task in each temperature step described in re-test
The corresponding all working mode conversion sequence of classification；
Second test module was used within the second test period, had tested each temperature platform of the test sequence
In rank after the corresponding working method conversion sequence of first task category, in rear task in each temperature step described in re-test
The corresponding working method conversion sequence of classification.
Referring to Fig. 5, Fig. 5 is the structure of the second embodiment of the reliability test system of the software and hardware system of the present invention
Schematic diagram.
The reliability test system of the software and hardware system of present embodiment and the difference of first embodiment are：It is comprehensive
Close test profile acquisition module 100 and may also include mission profile module 110 and synthesis module 120, wherein：
Mission profile module 110 is used for each software test mission profile for obtaining software and hardware system.
Synthesis module 120 is used for according to environment in hardware reliability experimental enviroment section in reliability determination and acceptance criteria
Principle of the stress using temperature profile as reference point, each mission profile is synthesized the integrated view of the software and hardware system.
Present embodiment, according to environmental stress in hardware reliability experimental enviroment section in reliability determination and acceptance criteria
Using temperature profile as the principle of reference point, each mission profile is synthesized to the integrated view of the software and hardware system, can be quick
Effectively comprehensive matching software reliability test mission profile tests integrated environment section with hardware reliability.
As shown in figure 3, the hardware reliability experimental enviroment section is reliability determination and acceptance criteria《GJ899A-
2009》The reliability test environmental stress of middle ram-air cooling class Ⅱ equipment designs the corresponding comprehensive ring of hardware reliability experiment
Border section.
The embodiment of method for testing reliability the 3rd of software and hardware system as described below for the present invention.
In the present embodiment, according to hardware reliability experiment integrated environment section《GJB899A-2009》Middle punching press is empty
The reliability test environmental stress of air cooling class Ⅱ equipment is designed and formed, as shown in Figure 3.
In software and hardware combined reliability experimental basis, by software test mission profile as using stress loading to original
Hardware reliability compbined test environment section on, reference《GJB899A-2009》Middle hardware reliability tests integrated environment section
In vibration stress, electric stress etc. use temperature profile for reference point, software test mission profile and hardware reliability are tested
The comprehensive matching of integrated environment section, uses temperature profile to carry out comprehensive matching for reference point.Illustrate comprehensive below with an example
Close the implementation process of matching：
Table 1 gives the mission profile of certain system.The mission profile is made up of tetra- mission profiles of A, B, C, D.Root
According to engineering experience, the ratio of four mission profiles is：60%:10%:25%:5%, according to《GJB899A-2009》Can by this four
Individual section synthesizes an integrated view.
The software and hardware system mission profile of table 1
Note："-" represents that content is recorded by actual conditions.
Table 2 gives the integrated view generated through comprehensive matching corresponding with table 1.From the table, the synthesis is cutd open
Bread is containing 6 temperature steps.Illustrate specific comprehensive matching process by taking temperature step 1 as an example below.
Because temperature step 1 is made up of tetra- task phases of B5, B7, C2, C4, in general assignment, the hair of each task phase
Raw probability is identical with the probability of happening of corresponding task section, it can thus be concluded that：P (B5)=p (B7)=10%, p (C2)=p (C4)=
25%.So in integrated view, the corresponding step task probability of temperature step 1 and for p (B5)+p (B7)+p (C2)+p
(C4)=70%, its accounting is 70%/(70%+60%+145%+130%+70%+75%)=12.73%.
The integrated view of table 2
And the determination in the corresponding software task source of each temperature step can be calculated as follows：
By taking temperature step 1 as an example.The duration of each task phase in access mission profile is needed first, and come to an end fruit such as table
Shown in 3.
The task phase duration of table 3
| Task phase | Duration (min) |
| B5 | 15 |
| B7 | 15 |
| C2 | 34 |
| C4 | 34 |
The probability of each mission profile as shown in Table 2 again, as shown in table 4.
Each task probability of table 4
| Task phase | Task probability (%) |
| B5 | 10 |
| B7 | 10 |
| C2 | 25 |
| C4 | 25 |
Then p (B5)=(15*10%)/(15*10%+15*10%+34*25%+34*25%)=7.5%, other tasks
Stage compound prbability similar can be obtained, and can so obtain table 5.
The corresponding software task source of the synthesis section temperature step of table 5 and ratio
Next, needing to calculate the execution number of times of the working method conversion sequence on temperature step 1 corresponding to software.Work
The mode conversion sequence of work can perform frequency according to it and be divided into three classifications：Substantially, conventional, optional, its proportion is defined as 3:
2:1.By taking working method conversion sequence a as an example, " under working condition 1 ", its probability of happening be 3/ (3+2*4+1)=0.25；
" under temperature step 1 ", its probability of happening is 3/ (3+2*4+1+3+2*2+1)=0.15；So in whole integrated view
Proportion is 0.15*12.73%=1.91%.The combined chance of other working method conversion sequences similar can also be obtained, knot
Fruit such as table 6.Afterwards, it is necessary to which combined chance is normalized, probable value is transformed to integer by the purpose so done first
It is easy to practical operation；Next to that in order to ensure that the low working method conversion sequence of ratio can be at least executed once.Can by table 6
See, the minimum working method conversion sequence of ratio is：" c → f → c " and " g → h → j → h ", thus can wherein any one
On the basis of, be scaled up, and be equipped with certain approximate, you can normalize in table 6 after result.
The probability of happening and number of times of working method conversion sequence in the temperature step 1 of table 6：
Note："-" represents that content is recorded by actual conditions.
Based on above-mentioned comprehensive matching process, each circulation in a compbined test (reliability testing) can be obtained corresponding
The layout (partial test sequence) of software work mode conversion sequence on some temperature step (such as temperature step 1).Assuming that certain
Secondary compbined test includes 14 circulations, then the Perform sequence layout corresponding to working condition 1 can be table 7：
Table 7 corresponds to the software work mode conversion sequence layout of working condition 1 and working condition 2：
Note："-" represents that content is recorded by actual conditions.
As shown in Table 7：The execution number of times of working method conversion sequence is consistent with the number of times in table 6 in table 7.
It will be given below the general calculation formula of the corresponding information of the above-mentioned comprehensive matching process of correspondence：
1) temperature step probability Zj
Each temperature step in hardware reliability compbined test environment section is designated as T={ T1,T2,T3,…,Tn, often
Individual temperature step is synthesized by the temperature of each mission profile moment according to GJB899.Because software test section is general
What is calculated is the execution probability of task or operation, is usually to carry out probability statistics according to the number of times of experience state, therefore synthesis is cutd open
Temperature step T={ T in face1,T2,T3,…,TnIn the software Operation Profile probability calculation of each mission profile moment adopt
Calculated with task probability, computational methods are as follows：
Define temperature step T={ T in hardware reliability compbined test environment section1,T2,T3,…,TnProbability be Z=
{Z1,Z2,Z3,…,Zn, the probability of mission profile is P={ P1,P2,P3,…,Pn, hardware reliability compbined test environment section
Middle temperature step TjBy the sub-stage T of each mission profilejmComposition, is designated as：T={ Tj1,Tj2,Tj3,…,Tjm, TjmProbability
For task j probability Pj, then T is constitutedjEach mission profile sub-stage TjmProbability PjSum is Qj：
Wherein：The temperature order of the step of j- hardware reliability compbined test environment sections；
The sub-stage number of tasks of M- composition serial numbers j temperature step；
I- sub-stage task numbers；
QjIt is Z in the probability proportion of hardware reliability compbined test environment sectionj：
Wherein：The temperature order of the step of j- hardware reliability compbined test environment sections；
N- constitutes the temperature number of steps of hardware reliability compbined test environment section；
2) the probability C that working method conversion sequence occurs under single task sectionk
Probability of occurrence of the working method conversion sequence under single task section is Ck
Wherein：Mi- single task section temperature step j conversion sequence number；
Task Switching sequence number under the K- single task stages；
3) the probability V that working method conversion occurs under the temperature step of hardware reliability compbined test environment sectioni：
Working method changes the probability V under the temperature step of hardware reliability compbined test environment sectionk：
Wherein：Task Switching sequence number under the k- single task stages；
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of method for testing reliability of software and hardware system, it is characterised in that comprise the following steps：
Obtain the integrated view of software and hardware system；
Obtain each working method conversion sequence corresponding with each temperature step of the Comprehensive Experiment section, and each work side
Working condition, task category and the scale factor of formula conversion sequence；
In each temperature step, by the scale factor of each working method conversion sequence divided by each temperature step correspondence
All working mode conversion sequence scale factor summation, generate each working method conversion sequence in temperature step
Probability of happening；
Probability of happening of each working method conversion sequence in temperature step is obtained with corresponding temperature step described comprehensive real
The product for the generalized section step probability tested in section, generates the combined chance of each working method conversion sequence；
The combined chance of each working method conversion sequence is normalized, the execution of each working method conversion sequence is generated
Number of times；
According to the execution number of times of each working method conversion sequence and default test loop number of times, by each temperature step and each temperature
The corresponding each working method conversion sequence of step is converted to test sequence；
Software reliability test is carried out with sequence according to the test；
The step of integrated view for obtaining software and hardware system, comprises the following steps：
Obtain each mission profile of software and hardware system；
According to environmental stress in hardware reliability experimental enviroment section in reliability determination and acceptance criteria using temperature profile as ginseng
The principle of examination point, each mission profile is synthesized the integrated view of the software and hardware system.
2. the method for testing reliability of software and hardware system according to claim 1, it is characterised in that described in the basis
When carrying out reliability testing in the step of test carries out software reliability test with sequence, in each test period, institute has been tested
State in each temperature step of test sequence after the corresponding all working mode conversion sequence of first task category, re-test institute
State in each temperature step in the corresponding all working mode conversion sequence of rear task category.
3. the method for testing reliability of software and hardware system according to claim 1, it is characterised in that described in the basis
When carrying out reliability testing in the step of test carries out software reliability test with sequence, in each test period, institute has been tested
State after the corresponding working method conversion sequence of first task category in each temperature step of test sequence, re-test institute
State in each temperature step in the corresponding working method conversion sequence of rear task category.
4. the method for testing reliability of software and hardware system according to claim 1, it is characterised in that used according to the test
The step of sequence carries out software reliability test comprises the following steps：
Each test period was divided into at least two test periods；
Within the first test period, the first corresponding institute of task category in each temperature step of the test sequence has been tested
Have after working method conversion sequence, turn in each temperature step described in re-test in the corresponding all working mode of rear task category
Change sequence；
Within the second test period, first task category corresponding one in each temperature step of the test sequence has been tested
After individual working method conversion sequence, turn in each temperature step described in re-test in the corresponding working method of rear task category
Change sequence.
5. a kind of reliability test system of software and hardware system, it is characterised in that including：
Integrated view acquisition module, the integrated view for obtaining software and hardware system；
Work state information acquisition module, for obtaining each work corresponding with each temperature step of the Comprehensive Experiment section
Mode conversion sequence, and each working method conversion sequence working condition, task category and scale factor；
First probabilistic module, in each temperature step, by the scale factor of each working method conversion sequence divided by institute
The summation of the scale factor of the corresponding all working mode conversion sequence of each temperature step is stated, each working method conversion is generated
Probability of happening of the sequence in temperature step；
Second probabilistic module, for obtaining probability of happening of each working method conversion sequence in temperature step and corresponding temperature
The product of generalized section step probability of the step in the Comprehensive Experiment section, generates the synthesis of each working method conversion sequence
Probability；
Number of times module is performed, is normalized for the combined chance to each working method conversion sequence, each work is generated
The execution number of times of mode conversion sequence；
Test case module, will be each for the execution number of times according to each working method conversion sequence and default test loop number of times
Temperature step and the corresponding each working method conversion sequence of each temperature step are converted to test sequence；
Reliability testing module, for carrying out software reliability test with sequence according to the test；
The integrated view acquisition module also includes mission profile module and synthesis module, wherein：
The mission profile module is used for each mission profile for obtaining software and hardware system；
The synthesis module is used for should according to environment in hardware reliability experimental enviroment section in reliability determination and acceptance criteria
Principle of the power using temperature profile as reference point, each mission profile is synthesized the integrated view of the software and hardware system.
6. the reliability test system of software and hardware system according to claim 5, it is characterised in that the reliability testing
Module was additionally operable within each test period, had tested first task category pair in each temperature step of the test sequence
After all working mode conversion sequence answered, in the corresponding all working of rear task category in each temperature step described in re-test
Mode conversion sequence.
7. the reliability test system of software and hardware system according to claim 5, it is characterised in that the reliability testing
Module was additionally operable within each test period, had tested first task category pair in each temperature step of the test sequence
After the working method conversion sequence answered, in the corresponding work of rear task category in each temperature step described in re-test
Mode conversion sequence.
8. the reliability test system of software and hardware system according to claim 5, it is characterised in that the reliability testing
Module also includes time division module, the first test module and the second test module, wherein：
The time division module is used to each test period being divided into at least two test periods；
First test module was used within the first test period, had tested in each temperature step of the test sequence
After the corresponding all working mode conversion sequence of first task category, in rear task category in each temperature step described in re-test
Corresponding all working mode conversion sequence；
Second test module was used within the second test period, had tested in each temperature step of the test sequence
After the corresponding working method conversion sequence of first task category, in rear task category in each temperature step described in re-test
A corresponding working method conversion sequence.
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