CN108958997A - Universal serial bus fault simulation system and analogy method - Google Patents
Universal serial bus fault simulation system and analogy method Download PDFInfo
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- CN108958997A CN108958997A CN201810503937.9A CN201810503937A CN108958997A CN 108958997 A CN108958997 A CN 108958997A CN 201810503937 A CN201810503937 A CN 201810503937A CN 108958997 A CN108958997 A CN 108958997A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test buses, lines or interfaces, e.g. stuck-at or open line faults
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/261—Functional testing by simulating additional hardware, e.g. fault simulation
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Abstract
The present invention provides universal serial bus fault simulation system and analogy method, belongs to computer reliability energy assessment technique field.Universal serial bus fault simulation system of the present invention, including control machine and fault injector；Control machine requires to generate failure order according to user, and failure order is sent to fault injector, receives the injection result and goal systems state of fault injector feedback, and is fed back to user；Fault injector uses field programmable logic device FPGA, according to from control machine failure order to direct fault location needed for all parameters be configured, after receiving the data from universal serial bus, failure is injected in data, and modified data are sent to universal serial bus, obtained injection result and goal systems state are returned into control machine.When the present invention solves existing bus failure injection to verify computer reliability, the low problem of real-time.The present invention can be used for bus failure simulation.
Description
Technical field
The present invention relates to bus failure simulation system and analogy methods, belong to computer reliability energy assessment technique field.
Background technique
Currently, very extensive application has been obtained among industry and military field in computer, but apply in work
The computer of industry and military field often breaks down because of the influence of rugged environment, causes huge economic loss even
It is casualties.So the system of high reliability is just particularly important in these fields.
The features such as buses such as RS422/RS485 are because of its high real-time and flexibility obtains extensively among industrial communication systems
Using.And the communication process among actual application due to bus is often subject to the influence of severe external environment, in system
The probability to break down between system is very high, produces large effect to the reliability of computer, becomes raising meter
The bottleneck of calculation machine reliability, the communication protocol of bus and the research of communication stability and test become the new of industrial circle and grind
Study carefully hot spot, therefore develops the fault simulation system of serial RS422/RS485 bus for verifying the fault-tolerance of computer and mentioning
The reliability of high computer seems necessary.
Failure Injection Technique is used for always high reliability as the error resilience performance of system and the test method of unfailing performance
Auxiliary verifying when system designs；Common transmission media of the bus as connecting components is the important selected element of direct fault location
One of.Injection failure in bus, can cover the fault type of numerous levels, and facilitate control, while bus real-time
It is required that ensure that influence of the direct fault location to goal systems is preferably minimized.
Common bus failure method for implanting has two general orientation of software realization and hardware realization both at home and abroad.The event of software realization
Barrier injection is often embedded in an equipment in goal systems bus, real time operating system is used on embedded device, such as
Vxworks, μ C/OSII etc. inject failure to by the bus data of embedded device with software in real time operating system.Firmly
The direct fault location that part is realized often is inserted into a socket in bus interface, or an equipment is embedded in bus, in this socket
Or failure is injected based on bus signals of the FPGA/CPLD to process in equipment.
Due to the constraint of the characteristics such as bus real-time, layered protocol, common software and hardware implementation has its disadvantage.It is soft
Complicated failure can be injected in part direct fault location, does not destroy the structure of bus data frame, can be easily failure Import computer system
In system inside.However the single stepping of software generally requires much to walk hardware operation to support, real-time is relative to hardware meeting
It has a greatly reduced quality, certain requirement of real-time high bus is unable to satisfy using real time operating system.Common hardware fault
Bus signals are directly fixed as 0 or are fixed as 1 by injection, it is most likely that destroy data frame structure, in this case bus interface
Will be considered that it is that error message directly shields, failure also cannot propagate into inside computer system.
Summary of the invention
The present invention is when solving existing bus failure injection to verify computer reliability, and the low problem of real-time mentions
Universal serial bus fault simulation system and analogy method are supplied.
Universal serial bus fault simulation system of the present invention, including control machine and fault injector；
The control machine requires to generate failure order according to user, and failure order is sent to fault injector, receives event
Hinder the injection result and goal systems state of injector feedback, and is fed back to user；
The fault injector uses field programmable logic device FPGA, according to the failure order from control machine to event
All parameters needed for barrier injection are configured, after receiving the data from universal serial bus, according to the parameter set
Failure is injected in data, and modified data are sent to universal serial bus, the injection result and goal systems that will be obtained
State returns to control machine.
Further, the control machine includes: parameter generation module, order generation module, communication module and control machine
As a result recycling module；
Parameter generation module requires to generate the fault parameter that can be identified by fault injector according to user；
Order generation module obtains the fault parameter value of all generations from parameter generation module, these values is beaten
Packet, the form being packaged into is failure order, and all failure orders are all stored in and are sent in data buffer storage, waits communication
Module is sent to fault injector；
Communication module is communicated with fault injector, and the set of order generation module failure order generated is sent out
Fault injector is given, injection result and goal systems state that fault injector returns are transmitted to result recycling module；
Control machine result recycling module obtains direct fault location result and goal systems state by communication module, and by its
Feed back to user.
Further, the fault injector includes: serial communication module, main control module, direct fault location module, time control
Molding block, bus communication module and injector result recycling module；
The serial communication module, for being communicated with control machine；Serial communication module receives the event from control machine
Failure order is transmitted to main control module, and the injection result and goal systems that injector result recycling module is sent by barrier order
State is transmitted to control machine；
The main control module, according to all ginsengs needed for the failure order setting direct fault location that serial communication module transmits
Number, and according to the parameter of setting, direct fault location module, time control module and bus communication module are controlled；
The direct fault location module, what receiving time control module was sent allows the parameter of signal and main control module transmission
Information injects failure in the data that the correct time receives and dispatches according to the parameter set to bus communication module；
The time control module, according to the parameter being arranged in main control module, sending injection to direct fault location module allows
Signal；
The bus communication module, for the communication between fault injector and universal serial bus, when injecting failure, bus
Communication module just will be sent on universal serial bus through the modified data of direct fault location module；When being not injected into failure, bus is logical
News module just directly receives and dispatches the data transmitted on universal serial bus；
The injector result recycling module is responsible for obtained injection result and goal systems state returning to control
Machine.
Universal serial bus failure simulation method of the present invention, is achieved through the following technical solutions:
Step 1: control machine opens serial ports, transmitter register reset command；
Step 2: direct fault location relevant information is arranged in user on control machine；
Step 3: the control machine requires to generate failure order according to user, failure order is sent to fault injector；
Step 4: the fault injector, according to the failure order from control machine to direct fault location needed for all ginsengs
Number is configured；
Step 5: fault injector is after receiving the data from universal serial bus, according to the parameter set to number
According to injecting failure in the middle, and modified data are sent to universal serial bus；While injecting failure, carry out injection result and
The data of goal systems state acquire；
Step 6: obtained injection result and goal systems state are returned to control machine by fault injector；Control machine will
It feeds back to user.
Present invention feature the most prominent and significant beneficial effect are:
Universal serial bus fault simulation system of the present invention is broadly divided into control machine and fault injector two parts.Wherein, it controls
Machine provides man-machine interaction mode, facilitates user to generate fault mode, is sent to fault injector, and obtain the result of injection.Therefore
Hinder injector and receive the failure order from control machine, store in register, the connection type of bus is set, injects user
The failure of selection, and injection result and goal systems state are returned into control machine.Universal serial bus fault simulation system is to target
Mistake, the failure that environmental test is caused, verifying meter are introduced between system or in the data of the bus transfer of internal system
Calculation machine unfailing performance real-time is higher, improves about 25% compared with prior art, timeliness feature specific as follows:
Man-machine interaction mode with graphic interface, fault-signal caused by direct fault location simulation system can pass through
The mode of visual interface is easily set；The beginning of direct fault location stops being controlled by the user；To injection result and target system
The recycling analysis of system state, can result to direct fault location and validity determine；Fault injection system is arranged failure and infuses
It is optional to enter the duration, can inject permanent type, momentary type, batch-type failure；Fault injector is realized using FPGA, so response
Speed is fast, and can control realization direct fault location online.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram；
Fig. 2 is serial communication module structural schematic diagram in the present invention；
Fig. 3 is the method for the present invention flow chart.
Specific embodiment
Specific embodiment 1: being illustrated in conjunction with Fig. 1 to present embodiment, the universal serial bus that present embodiment provides is former
Hinder simulation system, including control machine and fault injector；
The control machine provides man-machine interaction mode, is required to generate failure order according to user, failure order is sent to
Fault injector, the injection result and goal systems state for receiving fault injector feedback are (that is, bus is during direct fault location
State), and be fed back to user；
The fault injector uses field programmable logic device FPGA, according to the failure order from control machine to event
All parameters needed for barrier injection are configured, after receiving the data from universal serial bus, according to the parameter set
Failure is injected in data, and modified data are sent to universal serial bus, the injection result and goal systems that will be obtained
State returns to control machine.
Specific embodiment 2: the present embodiment is different from the first embodiment in that, the control machine includes: parameter
Generation module, order generation module, communication module and control machine result recycling module；
Parameter generation module requires to generate the fault parameter that can be identified by fault injector according to user；Parameter generates mould
Block should all generate a specific value for registers all inside fault injector；During direct fault location, parameter is generated
Module only needs to generate the value for injecting relevant register to this.
Order generation module obtains the fault parameter value of all generations from parameter generation module, these values is beaten
Packet, the form being packaged into is failure order, and all failure orders are all stored in and are sent in data buffer storage, waits communication
Module is sent to fault injector；
Communication module, the communication information for being responsible for serial ports good according to set by user are communicated with fault injector, will
The set of order generation module failure order generated is sent to fault injector, the injection result that fault injector is returned
Result recycling module is transmitted to goal systems state；
Control machine result recycling module obtains direct fault location result and goal systems state by communication module, and by its
User is fed back to, so that user carries out analysis use, control machine compares according to the data received and checks whether to be injected into
Function.
Other steps and parameter are same as the specific embodiment one.
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that, the fault injector
It include: serial communication module, main control module, direct fault location module, time control module, bus communication module and injector knot
Fruit recycling module；
The serial communication module, serial communication module are the interface channels between fault injector and control machine, for
Control machine is communicated；Serial communication module receives the failure order from control machine, and failure order is transmitted to main control module, and
Injection result and goal systems state that injector result recycling module is sent are transmitted to control machine；
Serial communication module is divided into three parts: receiving data submodule, data processing submodule and sends data submodule
Block, as shown in Figure 2.Data submodule is received, is responsible for reception and is mentioned from the failure order that control machine is sent and after being parsed into data frame
Supply data processing module, while receive injector result recycling module transmission injection result and goal systems state to transmission
Data submodule.Data processing submodule is assisted after receiving the data frame sent by reception data submodule according to preset communication
View is corresponding to carry out operation processing, and communications protocol is as shown in table 1.Send the data that data submodule handles data processing submodule
Register is read or write to main control module, and sends the injection result that data submodule also transmits reception data submodule
Control machine is sent to goal systems state.
1 serial communication internal agreement of table
The main control module is the control centre of fault injector, is set according to the failure order that serial communication module transmits
All parameters needed for direct fault location are set, and according to the parameter of setting, to direct fault location module, time control module and bus
Communication module is controlled；Main control module stores required all parameters when each type universal serial bus direct fault location,
It is stored in a manner of register；It specifically includes:
Trouble location register, the position of data frame where being responsible for record direct fault location；
Interval time register, be responsible for record batch-type direct fault location twice between interval time；
Duration register is responsible for the duration of record momentary type direct fault location and batch-type direct fault location；
Number register is injected, the injection number of record batch-type direct fault location is responsible for；
Time type register is responsible for the time type that record injects each time, there is momentary type, batch-type and permanent type.
Direct fault location module is the core of hardware fault injector.The direct fault location module, receiving time control module
The parameter information for allowing signal and main control module to send of transmission is logical to bus according to the parameter set in the correct time
Failure is injected in the data of news module transmitting-receiving；How direct fault location module judges injection according to the value in trouble location register
Kind failure.Trouble location register is 16 bit registers, wherein the data stored represent each in data frame
Data bit injects the register of what type of failure.16 altogether, every two represent the injection of a data position from low to high
Fault type, i.e., the 0th and the 1st representative data frame in the 0th fault type injected, the 2nd and the 3rd represent
The 1st fault type injected in data frame, and so on.
The time control module, according to the parameter being arranged in main control module, sending injection to direct fault location module allows
Signal；
Time control module control injection allows signal inj_enable, after user sends injection order, main control module
To control of relevant time register (time type register, duration register, interval time register and injection number
Register) numerical value is written in the middle, time control module, until being zero, changes simultaneously note according to clock frequency control number decrements
Enter to allow the value of signal inj_enable, to control the time of injection.Time control module constantly reads each time
Type register, duration register, interval time register and injection number register.
The bus communication module, for the communication between fault injector and universal serial bus；Bus communication module is direct
Towards bus transceiver, when injecting failure, bus communication module just will be sent to through the modified data of direct fault location module
On universal serial bus；When being not injected into failure, bus communication module just directly receives and dispatches the data transmitted on universal serial bus；
The injector result recycling module, by the data storage after the injection and injection failure before injection failure to queue
In the middle, and by obtained injection result and goal systems state control machine is returned to.
Other steps and parameter are the same as one or two specific embodiments.
Specific embodiment 4: being illustrated in conjunction with Fig. 3 to present embodiment, the universal serial bus that present embodiment provides is former
Hinder analogy method, specifically includes the following steps:
Step 1: control machine opens serial ports, transmitter register reset command；Before formal direct fault location, direct fault location
System needs to verify the integrity of itself by self-test operations；
Step 2: direct fault location relevant information is arranged in user on control machine；
Step 3: the control machine requires to generate failure order according to user, failure order is sent to fault injector；
Step 4: the fault injector, according to the failure order from control machine to direct fault location needed for all ginsengs
Number is configured；
Step 5: fault injector is after receiving the data from universal serial bus, according to the parameter set to number
According to injecting failure in the middle, and modified data are sent to universal serial bus；While injecting failure, carry out injection result and
The data of goal systems state acquire；
Step 6: obtained injection result and goal systems state are returned to control machine by fault injector；Control machine will
It feeds back to user.
The present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, this field
Technical staff makes various corresponding changes and modifications in accordance with the present invention, but these corresponding changes and modifications all should belong to
The protection scope of the appended claims of the present invention.
Claims (4)
1. universal serial bus fault simulation system, which is characterized in that including control machine and fault injector；
The control machine requires to generate failure order according to user, and failure order is sent to fault injector, receives failure note
Enter the injection result and goal systems state of device feedback, and is fed back to user；
The fault injector uses field programmable logic device FPGA, is infused according to the failure order from control machine to failure
Enter required all parameters to be configured, after receiving the data from universal serial bus, according to the parameter set to number
According to injecting failure in the middle, and modified data are sent to universal serial bus, by obtained injection result and goal systems state
Return to control machine.
2. universal serial bus fault simulation system according to claim 1, which is characterized in that the control machine includes:
Parameter generation module requires to generate the fault parameter that can be identified by fault injector according to user；
Order generation module obtains the fault parameter value of all generations from parameter generation module, these values is packaged, are beaten
The form being bundled into is failure order, and all failure orders are all stored in and are sent in data buffer storage, waits communication module
It is sent to fault injector；
Communication module is communicated with fault injector, and the set of order generation module failure order generated is sent to
Injection result and goal systems state that fault injector returns are transmitted to result recycling module by fault injector；
Control machine result recycling module obtains direct fault location result and goal systems state by communication module, and is fed back
To user.
3. universal serial bus fault simulation system according to claim 1 or claim 2, which is characterized in that the fault injector includes:
Serial communication module, main control module, direct fault location module, time control module, bus communication module and injector result are returned
Receive module；
The serial communication module, for being communicated with control machine；Serial communication module receives the failure life from control machine
It enables, failure order is transmitted to main control module, and the injection result and goal systems state that injector result recycling module is sent
It is transmitted to control machine；
The main control module, according to all parameters needed for the failure order setting direct fault location that serial communication module transmits, and
According to the parameter of setting, direct fault location module, time control module and bus communication module are controlled；
The direct fault location module, what receiving time control module was sent allows signal and the parameter of main control module transmission to believe
Breath, injects failure in the data that the correct time receives and dispatches according to the parameter set to bus communication module；
The time control module, according to the parameter being arranged in main control module, sending injection to direct fault location module allows signal；
The bus communication module, for the communication between fault injector and universal serial bus, when injecting failure, bus communication
Module just will be sent on universal serial bus through the modified data of direct fault location module；When being not injected into failure, bus communication mould
Block just directly receives and dispatches the data transmitted on universal serial bus；
The injector result recycling module is responsible for obtained injection result and goal systems state returning to control machine.
4. using the analogy method of any one of the claims 1 to 3 universal serial bus fault simulation system, which is characterized in that institute
State universal serial bus failure simulation method specifically includes the following steps:
Step 1: control machine opens serial ports, transmitter register reset command；
Step 2: direct fault location relevant information is arranged in user on control machine；
Step 3: the control machine requires to generate failure order according to user, failure order is sent to fault injector；
Step 4: the fault injector, according to the failure order from control machine to direct fault location needed for all parameters into
Row setting；
Step 5: fault injector after receiving the data from universal serial bus, is worked as according to the parameter set to data
Middle injection failure, and modified data are sent to universal serial bus；While injecting failure, injection result and target are carried out
The data of system mode acquire；
Step 6: obtained injection result and goal systems state are returned to control machine by fault injector；Control machine is anti-by it
Feed user.
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| CN109976960A (en) * | 2019-03-29 | 2019-07-05 | 北京润科通用技术有限公司 | A kind of bus test data method for implanting and device |
| CN111027108A (en) * | 2019-08-13 | 2020-04-17 | 哈尔滨安天科技集团股份有限公司 | Sequential logic safety detection method and device of low-speed synchronous serial bus |
| CN112214364A (en) * | 2020-09-15 | 2021-01-12 | 西安中飞航空测试技术发展有限公司 | Simulation method of IMB bus signals of C919 airplane |
| CN115079671A (en) * | 2022-06-30 | 2022-09-20 | 哈尔滨工业大学（威海） | Fault injection system of serial multi-bus |
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| CN111027108A (en) * | 2019-08-13 | 2020-04-17 | 哈尔滨安天科技集团股份有限公司 | Sequential logic safety detection method and device of low-speed synchronous serial bus |
| CN111027108B (en) * | 2019-08-13 | 2024-02-13 | 安天科技集团股份有限公司 | Sequential logic safety detection method and device for low-speed synchronous serial bus |
| CN112214364A (en) * | 2020-09-15 | 2021-01-12 | 西安中飞航空测试技术发展有限公司 | Simulation method of IMB bus signals of C919 airplane |
| CN112214364B (en) * | 2020-09-15 | 2024-03-15 | 西安中飞航空测试技术发展有限公司 | Simulation method of IMB bus signals of C919 aircraft |
| CN115079671A (en) * | 2022-06-30 | 2022-09-20 | 哈尔滨工业大学（威海） | Fault injection system of serial multi-bus |
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