CN104267272B - A kind of Safe Failure fraction method of testing that platform is inserted based on failure - Google Patents
A kind of Safe Failure fraction method of testing that platform is inserted based on failure Download PDFInfo
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- CN104267272B CN104267272B CN201410443065.3A CN201410443065A CN104267272B CN 104267272 B CN104267272 B CN 104267272B CN 201410443065 A CN201410443065 A CN 201410443065A CN 104267272 B CN104267272 B CN 104267272B
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Abstract
The invention discloses a kind of Safe Failure fraction method of testing that platform is inserted based on failure, comprise the following steps：Tested for product diagnosis situation that may be present first with test platform, by the way of failure insertion, obtain the diagnostic message of product；Conclusion is obtained using test platform, failure mode, diagnosis and impact analysis are carried out on Software tool, obtain four kinds of failure rate scores of functional safety；The failure classification of respective element in product/system is obtained, can be recorded from input screen by these conclusions by the interior microcomputer of test platform, and call the embedded analysis module to carry out computing.The present invention obtains the failure rate score of four kinds of failure modes of functional safety, the combination of the test platform and software analysis tool of exploitation according to the definition in functional safety, to complete the estimation for Safe Failure fraction, method is simple, easy to operate, improves the efficiency of work.
Description
Technical field
The invention belongs to safety control system technical field, more particularly to a kind of Safe Failure that platform is inserted based on failure
Fraction method of testing.
Background technology
With the related political affairs that country puts into effect to the attention degree of the enterprise securities such as petrochemical industry, chemical industry, electric power and Work Safety Supervision Bureau of each province
Plan, 2010, the safety control system output value reached more than 1,500,000,000 yuan.Predicted according to related consulting firm, later 10 year in 2011
Interior, the SIS markets annual compound growth rate of China is up to 20%.Correspondingly, safety control system assessment authentication marketplace will also have
Large development, it is estimated that domestic year market scale will be up to 20,000,000 or so.But due to assessing delayed, China's core of certification work
The control system that the national basis facility industry such as electricity, oil, chemical industry, urban transportation, high-speed railway is used is substantially external product
Product.Duo Jia International Certifications mechanism has carried out the various functions safety product from transmitter to executing agency at home at present,
Certification evaluation work including secure network, meets certification needs of the part domestic user to safety product in a short time.But
From in terms of the production domesticization level for improving whole safety control system, it is necessary to dominated the market with the assessment authentication techniques having by oneself, promote state
The technological progress of interior enterprise.
2 months 2000, International Electrotechnical Commission (IEC) issued functional safety basic standard IEC61508, the standard solution
Determine the puzzlement theory and practice problem to complicated security system function safety guarantee in the industry for many years, caused strongly in industrial quarters
Repercussion.Afterwards, Europe uses the standard first；The end of the year 2003, the U.S. starts to use and enforced in some high risk industries；
2006, the corresponding CNS issues of IEC61508, numbering is GB/T20438：2006, and in 1 day January in 2007
Start formal implementation.In the world, for the IEC61511 of process industry, IEC62061 for mechanical field different application,
ISO13849, EN/IEC60204-1, for the IEC61513 in core field, for the EN50126/7/8 of railway territory, for molten
The prEN-51056 of stove, the Functional Safety Standard for the different application field such as ISO26262 of automobile industry is put into effect successively, and one
The individual international Functional Safety Standard based on IEC61508 forms series.
Product, equipment and the system that functional safety applications occasion is clearly proposed in these standards must carry out work(
Energy security evaluation, to determine that (abbreviation SIL is divided into 4 etc. to safety integrity that these products, equipment and system can reach etc.
Level, i.e. SIL1/2/3/4), and in SIL evaluation processes, Safe Failure fraction (SFF) is to determine a key parameter of SIL,
It determines the safety integrity level of framework constraint with one piece of hardware fault nargin (HFT), as shown in the table：
Therefore, in SIL evaluation processes, it is necessary to which the SFF to product, equipment or system is evaluated.
Clearly provide the definition of SFF in a standard, i.e. SFF=(λ DD+ λ S)/λ, i.e. risk diagnostics to failure add
Upper Safe Failure sum is divided by total failure.But for how to obtain these failure classification, how to judge which failure is dangerous
, which is safe, and which can be diagnosed, which be can not diagnose do not provide clear and definite method or arrange
Apply.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of Safe Failure fraction method of testing that platform is inserted based on failure,
Aim to solve the problem that for how to obtain these failure classification, how to judge which failure is dangerous, which is safe, and which is
Can diagnose, which is that what can not be diagnosed do not provide the problem of clear and definite method or measure.
The embodiment of the present invention is achieved in that a kind of Safe Failure fraction method of testing that platform is inserted based on failure,
The Safe Failure fraction method of testing for being based on failure insertion platform is comprised the following steps：
Step one, tests first with test platform for product diagnosis situation that may be present, is inserted using failure
The mode for entering, obtains the diagnostic message of product；
Step 2, conclusion is obtained using test platform, and failure mode, diagnosis and impact analysis are carried out on Software tool,
Obtain four kinds of failure rate scores of functional safety；
Step 3, obtains the failure classification of respective element in product/system, can be by these conclusions by test platform
Microcomputer, is recorded from input screen, and calls the embedded analysis module to carry out computing.
Further, test platform includes：Microcomputer, touch-screen, signal generating module, the first probe, the second probe；
Microcomputer, for signal input and output procedure that analog equipment is performed in function；Including：Analysis module,
Calculating instrument and signal generating module；
Touch-screen, is connected with microcomputer, for input and output information；
Signal generating module, is connected with microcomputer, the input signal for receiving tested products, and with miniature calculating
Machine enters the interaction of row information；
First probe and the second probe, for connecting tested products and test platform, carry out failure insertion.
Further, microcomputer includes：Analysis module, calculating instrument and signal generating module；
The Safe Failure fraction method of testing that platform is inserted based on failure that the present invention is provided, according to determining in functional safety
Justice, obtains the failure rate score of four kinds of failure modes of functional safety, the test platform of exploitation and the group of software analysis tool
Close to complete the estimation for Safe Failure fraction, method is simple, easy to operate, improves the efficiency of work.
Brief description of the drawings
Fig. 1 is the flow of the Safe Failure fraction method of testing based on failure insertion platform provided in an embodiment of the present invention
Figure；
Fig. 2 is the structural representation of test platform provided in an embodiment of the present invention；
In figure：1st, test platform；1-1, microcomputer；1-2, touch-screen；1-3, signal generating module；2nd, first visit
Pin；3rd, the second probe.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Below in conjunction with the accompanying drawings and specific embodiment is further described to application principle of the invention.
As shown in figure 1, the embodiment of the present invention based on failure insertion platform Safe Failure fraction method of testing include with
Lower step：
S101：Tested for product diagnosis situation that may be present first with test platform, inserted using failure
Mode, obtain product diagnostic message；
S102：Conclusion is obtained using test platform, failure mode, diagnosis and impact analysis are carried out on Software tool, obtained
Obtain four kinds of failure rate scores of functional safety；
S103：The failure classification (safety/dangerous, can diagnose) of respective element in product/system is obtained, can be by these
Conclusion is recorded by the interior microcomputer of test platform from input screen, and calls the embedded analysis module to carry out computing.
As shown in Fig. 2 the test platform 1 of the embodiment of the present invention is main being sent out by microcomputer 1-1, touch-screen 1-2, signal
Raw module 1-3, the first probe 2, the second probe 3 are constituted；
Microcomputer 1-1, for signal input and output procedure that analog equipment is performed in function；Including：Analysis mould
Block, calculating instrument and signal generating module；
Touch-screen 1-2, is connected with microcomputer 1-1, for input and output information；
Signal generating module 1-3, is connected with microcomputer 1-1, the input signal for receiving tested products, and with it is micro-
Type computer 1-1 enters the interaction of row information；
First probe 2 and the second probe 3, for connecting tested products and test platform 1, carry out failure insertion；
It is connected with tested products by by test platform, test platform can simulate various normal/fault-signals, while logical
Cross the first probe for carrying and the second probe carries out internal fault injection to product, and failure insertion and breakdown judge are completed with this
Function, the signal input and output procedure performed in function by the test platform analog equipment, while being carried out using probe
Failure is inserted, for example, may be inserted into the failures such as short circuit, open circuit for the resistance in product/system.
Operation principle of the invention：
The present invention will obtain Safe Failure fraction according to the definition in functional safety, it is necessary to first obtain four kinds of functional safety
The failure rate score of failure mode, the combination of the test platform and software analysis tool of exploitation of the present invention come complete for
The estimation of Safe Failure fraction.
1st, tested for product diagnosis situation that may be present first with test platform, the side inserted using failure
Formula, obtains the diagnostic message of product；
2nd, conclusion is obtained using test platform, failure mode, diagnosis and impact analysis is carried out on Software tool, obtain work(
Four kinds of failure rate scores of energy safety；
3rd, using the computing module that Software tool is built-in, Safe Failure fraction is calculated.
Software of the present invention is explained below：
Software obtains software copyright in November, 2013：
1st, functional safety assesses the exploitation of authentication means：
1.1 functional safety analysis softwares：
By the research to functional safety key technology, by achievement in research on failure model and effect analysis, altogether because
Failure analysis, SIL analysis modelings and database Integration ofTechnology form a functional safety for synthesis among a software
Analysis software, can be set up with complete independently using the software from FMEDA analyses, to fail data acquisition, system architecture, and fail mould
The characteristics of contents such as formula is divided, PFD/PFH is calculated, common cause failure estimation, software, includes：
1st, the functional safety tool software of domestic first integrated online database and analysis method；
2nd, online database and server are regularly updated, it is ensured that the promptness of data source；
3rd, FMEDA analyses process is intuitively generous, and failure mode is divided in 4 for can requiring functional safety；
4th, it is integrated with the related parameter of all CALCULATION OF FAILURE PROBABILITYs；
5th, analysis and assessment report is automatically generated,
Software obtains software copyright in November, 2013：
Instrument is supported in the assessment certification of 1.2 functional safeties：
By the research to functional safety certification estimation flow, the SOP documentation and program mistake of assessment verification process are formd
These codes and relation are formed software requirement by journey, problem, and with reference to the development process of V models, form a set of functional safety
Instrument is supported in assessment certification, development process can be entered according to the life cycle for meeting V models set in advance using the instrument
The examination of line program, is preserved by accounting logging system by record, conclusion is assessed, and forms cross-index, while in instrument
Also it is integrated with achievement in research --- functional safety assesses authentication checks code, is easy to appraiser's reference；
The main modular of the software includes：Add the requirement clause of product；To require clause distribute to the subsystem of product/
Component and each life cycle phase；To require that clause adds solution, and for solution adds validation test and evidence text
Shelves, are estimated to solution；To require that clause adds exact p-value；Output correlation report etc., the software interface is attractive in appearance, stream
Journey is clear, for the exploitation assessment of functional safety type product provides the guarantee of Life cycle.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (3)
1. it is a kind of based on failure come in and go out platform Safe Failure fraction method of testing, it is characterised in that the Safe Failure fraction survey
Method for testing is comprised the following steps：
Step one, tests first with test platform failure response that may be present for product and its diagnosis situation, adopts
The mode inserted with failure, obtains failure and the diagnostic message of product；
Step 2, conclusion is obtained using test platform, and failure mode, diagnosis and impact analysis are carried out on Software tool, is obtained
The failure rate score of four kinds of failure modes of functional safety；
Step 3, obtains the failure classification of respective element in product/system, and can the classification include safety, danger and diagnose
Arrive, the interior microcomputer that these conclusions can be passed through into test platform is recorded, and call embedded analysis mould from input screen
Block carries out computing.
2. Safe Failure fraction method of testing as claimed in claim 1, it is characterised in that test platform includes：Miniature calculating
Machine, touch-screen, signal generating module, the first probe, the second probe；
Microcomputer, for signal input and output procedure that analog equipment is performed in function；Including：Analysis module, calculating
Instrument and signal generating module；
Touch-screen, is connected with microcomputer, for input and output information；
Signal generating module, is connected with microcomputer, the input signal for receiving tested products, and enters with microcomputer
The interaction of row information；
First probe and the second probe, for connecting tested products and test platform, carry out failure insertion.
3. Safe Failure fraction method of testing as claimed in claim 2, it is characterised in that microcomputer includes：Analysis mould
Block, calculating instrument and signal generating module.
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| CN102034025A (en) * | 2010-12-02 | 2011-04-27 | 北京市劳动保护科学研究所 | Method for evaluating functional safety of safety instrument system |
| CN102096370A (en) * | 2010-12-10 | 2011-06-15 | 轻工业钟表研究所 | Multifunctional aviation clock |
| CN102680829A (en) * | 2012-05-18 | 2012-09-19 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Device and method for monitoring safe failure of electric device |
| CN103514330A (en) * | 2013-10-08 | 2014-01-15 | 工业和信息化部电子第五研究所 | Method and system for constructing failure analysis process in component failure analysis expert system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6621275B2 (en) * | 2001-11-28 | 2003-09-16 | Optonics Inc. | Time resolved non-invasive diagnostics system |
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| CN102034025A (en) * | 2010-12-02 | 2011-04-27 | 北京市劳动保护科学研究所 | Method for evaluating functional safety of safety instrument system |
| CN102096370A (en) * | 2010-12-10 | 2011-06-15 | 轻工业钟表研究所 | Multifunctional aviation clock |
| CN102680829A (en) * | 2012-05-18 | 2012-09-19 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Device and method for monitoring safe failure of electric device |
| CN103514330A (en) * | 2013-10-08 | 2014-01-15 | 工业和信息化部电子第五研究所 | Method and system for constructing failure analysis process in component failure analysis expert system |
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