CN105893232A - Abnormal data generation method based on RS422 interface - Google Patents
Abnormal data generation method based on RS422 interface Download PDFInfo
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- CN105893232A CN105893232A CN201410558548.8A CN201410558548A CN105893232A CN 105893232 A CN105893232 A CN 105893232A CN 201410558548 A CN201410558548 A CN 201410558548A CN 105893232 A CN105893232 A CN 105893232A
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Abstract
The invention belongs to a embedded software test method and specifically relates to an abnormal data generation method based on RS422 interface. The method comprises following steps: abnormal data types and features tested by the RS422 interface are tested by analysis software dynamically, factors that affect test adequacy are extracted, and therefore suitable abnormal data types are selected as generation objects through extracting and analyzing common features of RS422 interface abnormal data; for tested software with data response, the response data of the tested software must be read back and is displayed in an abnormal data generating software interface; for generated abnormal data, suitable devices and methods are applied for data output; the generated abnormal data is injected into a tested system by means of a simulation device. The advantages of the abnormal data generation method are that generated abnormal data is injected into the tested software, the test adequacy, integrity and effectiveness are increased, and the quality of military software dynamic testing about RS422 use case execution is increased.
Description
Technical field
The invention belongs to a kind of embedded software test method, be specifically related to one and weigh its survey in testing
A kind of method of examination adequacy, is applied to embedded/non-embedded software RS422 interface testing by the method
In, thus ensure the adequacy that software interface is tested.
Background technology
Near several next, along with digitized and intelligence degree quickly improve, software category and quantity are in equipment
Proportion gradually steps up, and the effect of performance increases day by day, and software quality also becomes affects model quality
One key factor.In equipment preparation and sizing, the payment course of receiving, dynamic test is checking software
Function, lookup software issue, a key link of lifting software quality, the most various configuration management machines
Structure requires the core work must carried out before software is shaped.But due to experimental enviroment focus on checking soft
The every normal function of part, it is impossible to checking software is to various most common failures and abnormal disposition, and this is the most
Become the key factor that restriction software dynamic testing is normally carried out.Therefore, the present invention designs and Implements
A kind of abnormal data generation technique based on RS422 interface, with RS422 interface card as platform, interface
Data set Frame Protocol, for relying on, generates the abnormal data meeting test request, meets tested software RS422
Fault-tolerant, the exception handling ability of mouth are tested.
Summary of the invention
It is an object of the invention to provide a kind of abnormal data based on RS422 interface and generate method, it can
Generate and meet the interface testing method to abnormal data requirement.
The present invention is achieved in that a kind of abnormal data based on RS422 interface generates method, its bag
Containing following steps:
(1) the abnormal data type of software dynamic testing RS422 interface testing, feature are analyzed, therefrom
Extract the factor affecting testing adequacy, and then by extracting, analyzing being total to of RS422 interface abnormal data
Same characteristic, selects suitable abnormal data kind as generating object, fault mould common in serial communication
Formula is exception and the exception in the cycle of transmission of data, and the exception of data includes frame head, postamble, frame length, school
Test and etc. mistake.In system under test (SUT), inject fault by fault simulation equipment, thus examine system under test (SUT)
Mistake proofing ability, according to arrange serial ports passage, baud rate, data bit, parity check system, delay
Time etc. carry out the write of data；
(2) for there being the tested software of data answering, it is necessary to the reply data of retaking of a year or grade tested software,
And shown at abnormal data generation software interface；
(3) for the abnormal data produced, apply mechanically suitable Apparatus and method for and carry out data output, profit
With simulator, the abnormal data of generation is injected in system under test (SUT).
Described step (3) comprises the steps:
1) from the standpoint of according to application scenarios, industrial requirements, interface module characteristic, convenience, hardware
Resource should select the PXI bus industrial control computer of NI, model PXI-1042, selects 1 block controller,
One back side bus is the RS422 board of PXI, and a Shielded Twisted Pair turns the connecting line of 9 needle serial ports,
Article one, 9 needle serial ports turn the connecting line of jumper holders；
2) write software according to above-mentioned hardware resource, complete hardware driving, control；Data genaration, send out
Send；The function such as data receiver, process, the software write should possess hardware configuration, self-checking function, can examine
Look into hardware board and whether connect intact, hardware board port number, hardware board baud rate, data bit,
The scopes such as parity check system and information.And automatically distribute serial ports passage according to resource situation in cabinet；
3) use initializing resource to set port according to RS422 board and open data with queue
Mode carry out read/write close port and empty channel data release hardware resource handle
Mode has write driver, and starts driver after hardware check is normally；
4) opening configuration parameter after RS422 direct fault location model, parameter should comprise hardware resource parameter institute
Select port numbers, corresponding serial ports passage, baud rate, data bit, even-odd check, stopping position；
5) design abnormal data generates kind, comprises the often frame head of bag data, frame length, data volume, frame
Tail, if having verification and, verification mode, data volume contain spcial character, often bag data transmission time interval,
The number of times that often bag data send, sends out the time interval mistake of number every time；
6) can determine that and generate the abnormal data of selection type after setting parameter, and all data are carried out
Serial ports sends.
It is an advantage of the invention that the abnormal data of generation can be injected into tested software by it, thus improve survey
Examination adequacy, integrity, effectiveness, and finally improve Military Software dynamic test about RS422 use-case
The quality performed.
Accompanying drawing explanation
Fig. 1 is that a kind of abnormal data based on RS422 interface provided by the present invention generates method flow
Figure；
Fig. 2 is that a kind of abnormal data based on RS422 interface generates method application note figure.
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings:
A kind of abnormal data based on RS422 interface generates method, and it comprises the steps of:
(1) the abnormal data type of software dynamic testing RS422 interface testing, feature are analyzed, therefrom
Extract the factor affecting testing adequacy, and then by extracting, analyzing being total to of RS422 interface abnormal data
Same characteristic, selects suitable abnormal data kind as generating object, fault mould common in serial communication
Formula is exception and the exception in the cycle of transmission of data, and the exception of data includes frame head, postamble, frame length, school
Test and etc. mistake.In system under test (SUT), inject fault by fault simulation equipment, thus examine system under test (SUT)
Mistake proofing ability, according to arrange serial ports passage, baud rate, data bit, parity check system, delay
Time etc. carry out the write of data；
(2) for there being the tested software of data answering, it is necessary to the reply data of retaking of a year or grade tested software,
And shown at abnormal data generation software interface.Such as serial ports reply data bag, action executing result
Packet etc..It is generally also the interaction of user-defined protocol.
(3) for the abnormal data produced, apply mechanically suitable Apparatus and method for and carry out data output, profit
With simulator, the abnormal data of generation is injected in system under test (SUT).
1) from the standpoint of according to application scenarios, industrial requirements, interface module characteristic, convenience, hardware
Resource should select the PXI bus industrial control computer of NI, model PXI-1042.Select 1 piece of control
Device, a back side bus is the RS422 board of PXI, and a Shielded Twisted Pair turns the connection of 9 needle serial ports
Line, 9 needle serial ports turn the connecting line of jumper holders；
2) write software according to above-mentioned hardware resource, complete hardware driving, control；Data genaration, send out
Send；The function such as data receiver, process.The software write should possess hardware configuration, self-checking function, can examine
Look into hardware board and whether connect intact, hardware board port number, hardware board baud rate, data bit,
The scopes such as parity check system and information.And automatically distribute serial ports passage according to resource situation in cabinet.
3) use initializing resource to set port according to RS422 board and open data with queue
Mode carry out read/write close port and empty channel data release hardware resource handle
Mode has write driver.And after hardware check is normally, start driver.
4) opening configuration parameter after RS422 direct fault location model, parameter should comprise hardware resource parameter such as
Selected end slogan, corresponding serial ports passage, baud rate, data bit, even-odd check, stopping position etc..
5) design abnormal data generates kind, comprises the often frame head of bag data, frame length, data volume, frame
Tail, if having verification and, verification mode, data volume contain spcial character, often bag data transmission time interval,
The number of times that often bag data send, sends out the mistakes such as several time intervals every time.
6) can determine that and generate the abnormal data of selection type after setting parameter, and all data are carried out
Serial ports sends.
Claims (2)
1. an abnormal data based on RS422 interface generates method, it is characterised in that: it comprise as
Lower step:
(1) the abnormal data type of software dynamic testing RS422 interface testing, feature are analyzed, therefrom
Extract the factor affecting testing adequacy, and then by extracting, analyzing being total to of RS422 interface abnormal data
Same characteristic, selects suitable abnormal data kind as generating object, fault mould common in serial communication
Formula is exception and the exception in the cycle of transmission of data, and the exception of data includes frame head, postamble, frame length, school
Test and etc. mistake.In system under test (SUT), inject fault by fault simulation equipment, thus examine system under test (SUT)
Mistake proofing ability, according to arrange serial ports passage, baud rate, data bit, parity check system, delay
Time etc. carry out the write of data；
(2) for there being the tested software of data answering, it is necessary to the reply data of retaking of a year or grade tested software,
And shown at abnormal data generation software interface；
(3) for the abnormal data produced, apply mechanically suitable Apparatus and method for and carry out data output, profit
With simulator, the abnormal data of generation is injected in system under test (SUT).
A kind of abnormal data based on RS422 interface generates method, its
It is characterised by: described step (3) comprises the steps,
1) from the standpoint of according to application scenarios, industrial requirements, interface module characteristic, convenience, hardware
Resource should select the PXI bus industrial control computer of NI, model PXI-1042, selects 1 piece of control
Device, a back side bus is the RS422 board of PXI, and a Shielded Twisted Pair turns the connection of 9 needle serial ports
Line, 9 needle serial ports turn the connecting line of jumper holders；
2) write software according to above-mentioned hardware resource, complete hardware driving, control；Data genaration, send out
Send；The function such as data receiver, process, the software write should possess hardware configuration, self-checking function, can examine
Look into hardware board and whether connect intact, hardware board port number, hardware board baud rate, data bit,
The scopes such as parity check system and information.And automatically distribute serial ports passage according to resource situation in cabinet；
3) use initializing resource to set port according to RS422 board and open data with queue
Mode carry out read/write close port and empty channel data release hardware resource handle
Mode has write driver, and starts driver after hardware check is normally；
4) opening configuration parameter after RS422 direct fault location model, parameter should comprise hardware resource parameter institute
Select port numbers, corresponding serial ports passage, baud rate, data bit, even-odd check, stopping position；
5) design abnormal data generates kind, comprises the often frame head of bag data, frame length, data volume, frame
Tail, if having verification and, verification mode, data volume contain spcial character, often bag data transmission time interval,
The number of times that often bag data send, sends out the time interval mistake of number every time；
6) can determine that and generate the abnormal data of selection type after setting parameter, and all data are carried out
Serial ports sends.
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| CN201410558548.8A CN105893232A (en) | 2014-10-21 | 2014-10-21 | Abnormal data generation method based on RS422 interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112115008A (en) * | 2020-09-16 | 2020-12-22 | 天津津航计算技术研究所 | Method and system for testing one-to-many data recorder |
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| CN101865705A (en) * | 2010-06-03 | 2010-10-20 | 长春奥普光电技术股份有限公司 | Automatic fault diagnosis device of encoder and diagnosis solving method thereof |
| CN202230386U (en) * | 2011-09-19 | 2012-05-23 | 中国人民解放军军械工程学院 | Circuit system automatic control oriented fault injection system |
| CN103235591A (en) * | 2013-03-25 | 2013-08-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Online fault injection method on basis of combination of hardware fault injection and software fault injection |
| CN103631717A (en) * | 2013-12-09 | 2014-03-12 | 北京京航计算通讯研究所 | RS422 serial communication interface fault model construction method based on NI platform |
| CN103699112A (en) * | 2013-11-29 | 2014-04-02 | 中国航空无线电电子研究所 | Aviation electronic self-detection verification equipment based on IO (Input/Output) signal failure simulation, and verification method of equipment |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865705A (en) * | 2010-06-03 | 2010-10-20 | 长春奥普光电技术股份有限公司 | Automatic fault diagnosis device of encoder and diagnosis solving method thereof |
| CN202230386U (en) * | 2011-09-19 | 2012-05-23 | 中国人民解放军军械工程学院 | Circuit system automatic control oriented fault injection system |
| CN103235591A (en) * | 2013-03-25 | 2013-08-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Online fault injection method on basis of combination of hardware fault injection and software fault injection |
| CN103699112A (en) * | 2013-11-29 | 2014-04-02 | 中国航空无线电电子研究所 | Aviation electronic self-detection verification equipment based on IO (Input/Output) signal failure simulation, and verification method of equipment |
| CN103631717A (en) * | 2013-12-09 | 2014-03-12 | 北京京航计算通讯研究所 | RS422 serial communication interface fault model construction method based on NI platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112115008A (en) * | 2020-09-16 | 2020-12-22 | 天津津航计算技术研究所 | Method and system for testing one-to-many data recorder |
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