CN108508295A - A kind of switching value fault injection system and method - Google Patents
A kind of switching value fault injection system and method Download PDFInfo
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- CN108508295A CN108508295A CN201810270680.7A CN201810270680A CN108508295A CN 108508295 A CN108508295 A CN 108508295A CN 201810270680 A CN201810270680 A CN 201810270680A CN 108508295 A CN108508295 A CN 108508295A
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- fault location
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a kind of switching value fault injection system and method, which includes：Host computer and switching value Fault Insertion Equipment, communicate to connect between host computer and switching value Fault Insertion Equipment；Host computer sends direct fault location order to switching value Fault Insertion Equipment；Switching value Fault Insertion Equipment receives the direct fault location order that host computer is sent；Receive On-off signal terminate into on-off model；When meeting fault triggering condition, direct fault location order is parsed, obtains direct fault location instruction；It instructs switch amount signal to carry out direct fault location according to direct fault location, generates the switching value fault-signal of injection failure, the switching value fault-signal for injecting failure is exported by output switch parameter end.The present invention may be implemented switch amount signal and carry out physical layer direct fault location and electrical layer direct fault location.
Description
Technical field
The present invention relates to Failure Injection Technique fields, more particularly to a kind of switching value fault injection system and method.
Background technology
The direct fault location of on-off model can be applied to the switching value failure adaptability under failure environment, for switching
Debugging, the test and verification process for measuring faulty equipment, to ensure high reliability, the stability of switching value equipment, for switch
The direct fault location for measuring signal includes mainly physical layer direct fault location and electrical layer direct fault location.
Currently, carry out on-off model direct fault location when, when to physical layer direct fault location, often through terminal
Plate, out of circuit test case or other auxiliary tools can only adopt the short circuit for manually realizing some switching values, open circuit event
Barrier, and physical layer direct fault location just cannot achieve for fault scenes such as the high frequency channel of switching value, high frequency open circuit, short circuits, and
Some cable impedances, capacitive reactance variation also cannot achieve.And it is presently mainly direct by signal source to electrical layer direct fault location
It is connect with switching value to realize electrical layer direct fault location, but direct fault location effect does not reach requirement, and is easily damaged switching value
Faulty equipment.
Invention content
It is an object of the invention to propose a kind of switching value fault injection system and method, to realize the object of on-off model
Manage the purpose of layer direct fault location and electrical layer direct fault location.
In order to achieve the above objectives, the present invention provides following technical schemes：
A kind of switching value fault injection system, including：Host computer and switching value Fault Insertion Equipment, wherein：
It is communicated to connect between the host computer and the switching value Fault Insertion Equipment；
The host computer sends direct fault location order, the direct fault location order packet to the switching value Fault Insertion Equipment
It includes：The order of physical layer direct fault location and electrical layer direct fault location order；
The switching value Fault Insertion Equipment receives the direct fault location order that the host computer is sent；Receive switch
It measures input terminal and accesses on-off model；When meeting fault triggering condition, the direct fault location order is parsed, obtains event
Barrier injection instruction；Direct fault location is carried out to the on-off model according to direct fault location instruction, generates opening for injection failure
Measure fault-signal in pass；The switching value fault-signal of the injection failure is exported by output switch parameter end.
Further, the switching value Fault Insertion Equipment includes：Switch value input interface, output switch parameter interface, after
Electrical appliance module, direct fault location control module and Ethernet interface, wherein：
The input port of the relay module receives the on-off model of the switch value input interface access；
The Ethernet interface receives the physical layer direct fault location order that the host computer is sent, and by the physics
Layer direct fault location order is sent to the direct fault location control module；
The direct fault location control module then orders the physical layer direct fault location when meeting the fault triggering condition
Order is parsed, and the instruction of physical layer direct fault location is obtained；The relay mould is controlled according to physical layer direct fault location instruction
Block carries out physical layer direct fault location to the on-off model, generates the switching value fault-signal of injection physical layer failure；
The switching value fault-signal of the injection physical layer failure is sent to institute by the output port of the relay module
State output switch parameter interface.
Further, the switching value Fault Insertion Equipment includes：Switch value input interface, output switch parameter interface, after
Electrical appliance module, direct fault location control module, analog-digital converter, the first Signal-regulated kinase, digital analog converter, second signal conditioning
Module and Ethernet interface, wherein：
The Ethernet interface receives the electrical layer direct fault location order that the host computer is sent；
The input port of the relay module receives the on-off model of the switch value input interface access, and
The on-off model is sent to first Signal-regulated kinase；
The on-off model is converted to current signal by first Signal-regulated kinase by voltage signal, and is contracted
Small, the on-off model after the conditioning is sent to the analog-digital converter by the on-off model after being improved；
On-off model after the conditioning is converted to digital quantity by the analog-digital converter by analog quantity, and modulus is turned
On-off model after changing is sent to the direct fault location control module；
The direct fault location control module then orders the electrical layer direct fault location when meeting the fault triggering condition
Order is parsed, and the instruction of electrical layer direct fault location is obtained；After being instructed to the analog-to-digital conversion according to the electrical layer direct fault location
On-off model carry out electrical layer direct fault location, generate injection electrical layer failure switching value fault-signal；By the injection
The switching value fault-signal of electrical layer failure is sent to the digital analog converter；
The switching value fault-signal of the injection electrical layer failure is converted to simulation by the digital analog converter by digital quantity
Amount, and the switching value fault-signal of the injection electrical layer failure after digital-to-analogue conversion is sent to the second signal conditioning module；
The second signal conditioning module is by the switching value fault-signal of the injection electrical layer failure after the digital-to-analogue conversion
Voltage signal is converted to by current signal, and is amplified, the switching value failure letter of the injection electrical layer failure after being improved
Number, the switching value fault-signal of the injection electrical layer failure after the conditioning is sent to the relay module；
The output port of the relay module is by the switching value fault-signal of the injection electrical layer failure after the conditioning
It is sent to the output switch parameter interface.
Further, the direct fault location control module includes：Signal receiving module, time and external signal trigger mode
Block, direct fault location module, direct fault location sequence control module and signal transmitting module, wherein：
The signal receiving module receives the on-off model, and by the on-off model be sent to the time with
External signal trigger module；
The time, which determines with external signal trigger module according to the fault triggering condition, to need to believe the switching value
Number carry out direct fault location when, the on-off model is sent to the direct fault location module；
The direct fault location sequence control module receives the failure that the host computer is sent by the Ethernet interface and notes
Enter order, and the direct fault location order is sent to the direct fault location module；
The direct fault location module parses the direct fault location order, direct fault location instruction is obtained, according to described
Direct fault location instruction carries out direct fault location to the on-off model after the analog-to-digital conversion, obtains the switching value failure of injection failure
Signal；
The switching value fault-signal of the injection failure is sent to the output switch parameter and connect by the signal transmitting module
Mouthful.
Further, the direct fault location module includes：Physical layer direct fault location unit and electrical layer direct fault location unit,
Wherein：
The physical layer direct fault location unit is when meeting the fault triggering condition, then to the physical layer direct fault location
Order is parsed, and the instruction of physical layer direct fault location is obtained；The relay is controlled according to physical layer direct fault location instruction
Module carries out physical layer direct fault location to the on-off model；
The electrical layer direct fault location unit is when meeting the fault triggering condition, then to the electrical layer direct fault location
Order is parsed, and the instruction of electrical layer direct fault location is obtained；It is instructed to the analog-to-digital conversion according to the electrical layer direct fault location
On-off model afterwards carries out electrical layer direct fault location.
Further, the direct fault location control module is on-site programmable gate array FPGA.
The invention also discloses a kind of switching value fault filling methods, are applied to switching value Fault Insertion Equipment, described to open
Pass is measured to be communicated to connect between Fault Insertion Equipment and host computer, and this method includes：
Receive On-off signal terminate into on-off model；
The direct fault location order that the host computer is sent is received, the direct fault location order includes：Physical layer direct fault location
Order and electrical layer direct fault location order；
When meeting fault triggering condition, the direct fault location order is parsed, obtains direct fault location instruction；
Direct fault location is carried out to the on-off model according to direct fault location instruction, generates the switching value of injection failure
Fault-signal；
The switching value fault-signal of the injection failure is exported by output switch parameter end.
Further, when the direct fault location order is physical layer direct fault location order, the physical layer failure is noted
Enter order to be parsed, obtains the instruction of physical layer direct fault location, then instructed to the switch according to the physical layer direct fault location
The step of measuring signal and carry out physical layer direct fault location, generating the switching value fault-signal of injection physical layer failure, including：
Control relay module is instructed to carry out physical layer event to the on-off model according to the physical layer direct fault location
Barrier injection generates the switching value fault-signal of the injection physical layer failure.
Further, when the direct fault location order is electrical layer direct fault location order, the electrical layer failure is noted
Enter order to be parsed, obtains the instruction of electrical layer direct fault location, then instructed to the switch according to the electrical layer direct fault location
The step of measuring signal and carry out electrical layer direct fault location, generating the switching value fault-signal of injection electrical layer failure, including：
The on-off model is converted into current signal by voltage signal, and is reduced, the switch after being improved
Measure signal；
On-off model after the conditioning is converted into digital quantity by analog quantity, obtains the letter of the switching value after analog-to-digital conversion
Number；
Electrical layer failure is carried out to the on-off model after the analog-to-digital conversion according to electrical layer direct fault location instruction
Injection generates the switching value fault-signal of the injection electrical layer failure.
Further, the step of switching value fault-signal being exported by output switch parameter end, including：
The switching value fault-signal of the injection electrical layer failure is converted into analog quantity by digital quantity, obtains digital-to-analogue conversion
The switching value fault-signal of injection electrical layer failure afterwards；
The switching value fault-signal of injection electrical layer failure after the digital-to-analogue conversion is converted into voltage by current signal
Signal, and be amplified, the switching value fault-signal of the injection electrical layer failure after being improved；
The switching value fault-signal of injection electrical layer failure after the conditioning is exported by the output switch parameter end.
It can be seen via above technical scheme that compared with prior art, the invention discloses a kind of switching value direct fault locations
System and method, the system include：Host computer and switching value Fault Insertion Equipment, wherein：Host computer and switching value direct fault location
Communication between devices connect, and host computer sends direct fault location order to switching value Fault Insertion Equipment, and direct fault location order includes：
The order of physical layer direct fault location and electrical layer direct fault location order；Switching value Fault Insertion Equipment receives the event that host computer is sent
Barrier injection order；Receive On-off signal terminate into on-off model；When meeting fault triggering condition, direct fault location is ordered
Order is parsed, and direct fault location instruction is obtained；It instructs switch amount signal to carry out direct fault location according to direct fault location, generates injection
The switching value fault-signal of failure；The switching value fault-signal for injecting failure is exported by output switch parameter end.The present invention carries
The switching value fault injection system and method for confession are parsed by the direct fault location order sent to host computer, obtain failure note
Enter instruction, instruct switch amount signal to carry out corresponding direct fault location according to direct fault location, may be implemented switch amount signal into
Row physical layer direct fault location and electrical layer direct fault location.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of switching value fault injection system structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of switching value physical layer fault injection system structural schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of switching value electrical layer fault injection system structural schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the signal flow schematic diagram of switching value electrical layer direct fault location provided in an embodiment of the present invention；
Fig. 5 is a kind of switching value fault filling method flow diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of switching value physical layer fault filling method flow diagram provided in an embodiment of the present invention；
Fig. 7 is a kind of switching value electrical layer fault filling method flow diagram provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of switching value fault injection systems, including：It host computer 120 and opens
Fault Insertion Equipment 110 is measured in pass, wherein：
It is communicated to connect between host computer 120 and switching value Fault Insertion Equipment 110；Host computer 120 is noted to switching value failure
Enter equipment 110 and send direct fault location order, the direct fault location order includes：The order of physical layer direct fault location and electrical layer failure
Injection order；Switching value Fault Insertion Equipment 110 receives the direct fault location order that host computer 120 is sent；Receive On-off signal
Terminate into on-off model；When meeting fault triggering condition, direct fault location order is parsed, direct fault location is obtained and refers to
It enables；It instructs switch amount signal to carry out direct fault location according to direct fault location, generates the switching value fault-signal of injection failure；It will note
The switching value fault-signal for entering failure is exported by output switch parameter end.
As shown in Fig. 2, for a kind of real-time mode of switching value Fault Insertion Equipment 110 provided in an embodiment of the present invention, tool
Body, be physical layer direct fault location order in the direct fault location order that host computer 120 is sent to switching value Fault Insertion Equipment 110
When, then switching value Fault Insertion Equipment 110 includes：Switch value input interface 201, output switch parameter interface 202, relay module
203, direct fault location control module 204 and Ethernet interface 205, wherein：
The input port of relay module 203 receives the on-off model that switch value input interface 201 accesses；Ethernet connects
Mouth 205 receives the physical layer direct fault location order that host computers 120 are sent, and physical layer direct fault location order is sent to failure note
Enter control module 204；Direct fault location control module 204 is when meeting fault triggering condition, then to physical layer direct fault location order
It is parsed, obtains the instruction of physical layer direct fault location；Instruct control relay module 203 to switch according to physical layer direct fault location
It measures signal and carries out physical layer direct fault location, generate the switching value fault-signal of injection physical layer failure；Relay module 203 it is defeated
The switching value fault-signal for injecting physical layer failure is sent to output switch parameter interface 202 by exit port.
Further, as shown in Fig. 2, direct fault location control module 204 includes：Signal receiving module 2041, the time with it is outer
Portion's signal trigger module 2042, direct fault location module 2043, direct fault location sequence control module 2044 and signal transmitting module
2045, wherein：
Signal receiving module 2041 receives on-off model, and on-off model is sent to time and external signal triggering
Module 2042；Time needs switch amount signal to carry out event with external signal trigger module 2042 according to fault triggering condition determination
When barrier injection, on-off model is sent to direct fault location module 2043；Direct fault location sequence control module 2044 passes through ether
Network interface 205 receives the physical layer direct fault location order that host computer 120 is sent, and physical layer direct fault location order is sent to event
Hinder injection module 2043；Direct fault location module 2043 parses physical layer direct fault location order, obtains physical layer failure note
Enter instruction, instruct switch amount signal to carry out physical layer direct fault location according to physical layer direct fault location, obtains injection physical layer event
The switching value fault-signal of barrier；The switching value fault-signal for injecting physical layer failure is sent to switch by signal transmitting module 2045
Measure output interface 202.
Further, direct fault location control module 204 can be on-site programmable gate array FPGA.
Specifically, being described as follows for physical layer direct fault location principle：
When carrying out physical layer direct fault location, signal needs to flow through relay module on-off model, in relay module
In realize the physical layer direct fault location of switching value.The specific implementation process is as follows：Testing crew issues object by Ethernet interface
Layer direct fault location order is managed, failure order and physical layer direct fault location arithmetic analysis are carried out in direct fault location control module, it
The various combinations for carrying out control relay module afterwards, realize the injection of physical layer failure.
Wherein, it is as shown in table 1 below to send physical layer direct fault location command format for host computer when carrying out physical layer direct fault location：
Table 1
Specifically, physical layer direct fault location command format is described as follows shown in table 2：
Table 2
| Domain | Range | Description |
| Type | 31~26 | It is fixed as 0x1D |
| Opcode | 25~20 | Operation code indicates that information type is read operation or write operation |
| R | 19 | Retain |
| devinceID | 18~11 | Device type is numbered, the low 8bit of device id. |
| DataLen | 10~0 | Data length, including head of packet |
| Address | 31~0 | Physical layer direct fault location command address |
| Data | 31-0 | Physical layer direct fault location order data |
By parsing above-mentioned physical layer direct fault location order, realizes physical layer direct fault location, during direct fault location, need
The order of physical layer direct fault location is converted into the control that relay module control executes by physical layer direct fault location algorithm to open
It closes.
Specifically, by taking parallel impedance operates as an example, introduces physical layer direct fault location order and be converted into relay module control
Realization method, it is described in detail below：
After host computer issues impedance control order, by dissection process, several relay switches is controlled, relay is worked as
Device switch, which disconnects, has penetrated into resistance in circuit, when the corresponding relay of resistance is closed, then not by the resistance seal in after
In electrical appliance module, by jointly controlling for multiple relays, that realizes desired series impedance seals in failed operation.
In addition to the above-mentioned impedance relay block combiner that seals in also has in parallel capacitive reactance relay module combination, host computer by impedance
After control command issues, by dissection process, several relay switches are controlled, when relay switch is disconnected capacitive reactance in parallel
It is linked into circuit；After host computer issues impedance control order, by dissection process, several relay switches are controlled,
Switching value open circuit fault is realized when disconnecting relay, and switching value periodicity break-make is realized when periodically disconnecting closing relay
Failure；After host computer issues impedance control order, by dissection process, several relay switches is controlled, relay is worked as
Realize signal to short trouble when closure.
Relay module, the direct fault location of the main physical layer for completing switching value, the relay module used in of the invention
It is controlled, user can control relay module by Ethernet, realize the physical layer direct fault location of on-off model.
The physical layer direct fault location major function of realization includes：
(1) the program-controlled open-circuit operation of switching value is realized；
(2) periodical break-make：1) periodically open circuit should be able to be carried out to signal wire；2) it should be able to realize that break-make is respectively set in every road
Period；
(3) signal wire shorted to earth failure；
(4) series impedance controls：Resistance should be able to be incorporated to signal wire, resistance can continuously be set；
(5) signal capacitive reactance controls：Signal wire is incorporated to capacitance to GND, and capacitance can continuously be set.
It should be noted that the switching value fault injection system in the embodiment of the present invention, is substituted by relay module and is passed
Breaking case, the terminal board of system reduce system space expense, enhancing resistance value control flexibility, improve closeness, can be effective
According to accident design person realization approach realize physical layer direct fault location, in addition, by provide trigger condition, can enhance with
Association between system under test (SUT) completes joint test, can achieve the purpose that accomplish to accurately control physical layer failure.
As shown in figure 3, for a kind of real-time mode of switching value Fault Insertion Equipment 110 provided in an embodiment of the present invention, tool
Body, be electrical layer direct fault location order in the direct fault location order that host computer 120 is sent to switching value Fault Insertion Equipment 110
When, then switching value Fault Insertion Equipment 110 includes：Switch value input interface 301, output switch parameter interface 302, relay module
303, direct fault location control module 304, analog-digital converter 305, the first Signal-regulated kinase 306, digital analog converter 307, second
Signal-regulated kinase 308 and Ethernet interface 309, wherein：
Ethernet interface 309 receives the electrical layer direct fault location order that host computer 120 is sent；Relay module 301 it is defeated
Inbound port receives the on-off model that switch value input interface 301 accesses, and on-off model is sent to the first signal condition
Module 306；On-off model is converted to current signal by the first Signal-regulated kinase 306 by voltage signal, and is reduced, and is obtained
On-off model after conditioning is sent to analog-digital converter 305 by the on-off model after to conditioning；Analog-digital converter 305 will
On-off model after conditioning is converted to digital quantity by analog quantity, and the on-off model after analog-to-digital conversion is sent to failure note
Enter control module 304；Direct fault location control module 304 is when meeting fault triggering condition, then to electrical layer direct fault location order
It is parsed, obtains the instruction of electrical layer direct fault location；The switching value after analog-to-digital conversion is believed according to the instruction of electrical layer direct fault location
Number carry out electrical layer direct fault location, generate injection electrical layer failure switching value fault-signal；Opening for electrical layer failure will be injected
Pass amount fault-signal is sent to digital analog converter 307；Digital analog converter 307 will inject the switching value fault-signal of electrical layer failure
Analog quantity is converted to by digital quantity, and the switching value fault-signal of the injection electrical layer failure after digital-to-analogue conversion is sent to second
Signal-regulated kinase 308；Second signal conditioning module 308 believes the switching value failure of the injection electrical layer failure after digital-to-analogue conversion
Number voltage signal is converted to by current signal, and is amplified, the switching value failure of the injection electrical layer failure after being improved
The switching value fault-signal of injection electrical layer failure after conditioning is sent to relay module 301 by signal；Relay module
The switching value fault-signal of injection electrical layer failure after conditioning is sent to output switch parameter interface 302 by 301 output port.
Specifically, as shown in figure 3, above-mentioned direct fault location control module 304 includes：Signal receiving module 3041, the time with
External signal trigger module 3042, direct fault location module 3043, direct fault location sequence control module 3044 and signal send mould
Block 3045, wherein：
Signal receiving module 3041 receives the on-off model after carrying out analog-to-digital conversion by analog-digital converter 305, and will
On-off model after analog-to-digital conversion is sent to time and external signal trigger module 3042；Time and external signal trigger module
3042 according to fault triggering condition determine need to after analog-to-digital conversion on-off model carry out direct fault location when, by analog-to-digital conversion
On-off model afterwards is sent to direct fault location module 3043；Direct fault location sequence control module 3044 passes through Ethernet interface
309 receive the electrical layer direct fault location order that host computer 120 is sent, and electrical layer direct fault location order is sent to direct fault location
Module 3043；Direct fault location module 3043 parses electrical layer direct fault location order, obtains the instruction of electrical layer direct fault location,
Electrical layer direct fault location is carried out to the on-off model after analog-to-digital conversion according to the instruction of electrical layer direct fault location, it is electrical to obtain injection
The switching value fault-signal of layer failure；The switching value fault-signal for injecting electrical layer failure is sent to by signal transmitting module 3045
Digital analog converter 307.
Specifically, above-mentioned direct fault location module includes：Physical layer direct fault location unit and electrical layer direct fault location unit,
In：
Physical layer direct fault location unit then solves physical layer direct fault location order when meeting fault triggering condition
Analysis obtains the instruction of physical layer direct fault location；According to physical layer direct fault location instruct control relay module switch amount signal into
Row physical layer direct fault location；Electrical layer direct fault location unit then orders electrical layer direct fault location when meeting fault triggering condition
Order is parsed, and the instruction of electrical layer direct fault location is obtained；It is instructed to the switching value after analog-to-digital conversion according to electrical layer direct fault location
Signal carries out electrical layer direct fault location.
Further, direct fault location control module 304 can be on-site programmable gate array FPGA.
Specifically, being described as follows for electrical layer direct fault location principle：
When carrying out on-off model electrical layer direct fault location, need by relay module, the first Signal-regulated kinase,
Analog-digital converter, digital analog converter, second signal conditioning module, direct fault location control module carry out electrical injection data processing,
Realize electrical layer direct fault location.The specific implementation process is as follows testing crew issues electrical layer direct fault location by Ethernet interface
Order carries out failure order and electrical layer direct fault location arithmetic analysis in direct fault location control module, carries out control electricity later
Gas-bearing formation direct fault location.
It is as shown in table 3 below to carry out host computer transmission electrical layer direct fault location command format when electrical layer direct fault location：
Table 3
Specifically, electrical layer direct fault location command format is described as follows shown in table 4：
Table 4
| Domain | Range | Description |
| Type | 31~26 | It is fixed as 0x1D |
| Opcode | 25~20 | Operation code indicates that information type is read operation or write operation |
| R | 19 | Retain |
| devinceID | 18~11 | Device type is numbered, the low 8bit of device id. |
| DataLen | 10~0 | Data length, including head of packet |
| Address | 31~0 | Electrical layer direct fault location command address |
| Data | 31-0 | Electrical layer direct fault location order data |
For electrical layer direct fault location as shown in figure 4, specifically, by parsing above-mentioned switching value direct fault location order, lead to
Cross the relay switch of first control signal relay module so that signal can not incur loss passes to the first signal condition
Module, while controlling the first signal conditioning circuit and zooming in and out on-off model and Signal averaging, using analog-digital converter
The signal of acquisition carries out noise superposition in direct fault location control module, and the signal after superposition is passed through d convertor circuit
Output, the signal after digital analog converter output are overlapped by second signal conditioning module and externally input interference signal
Realize electrical layer direct fault location, after by electrical layer direct fault location, output end relay module can be realized according to order
Physical layer direct fault location.
The electrical layer direct fault location major function of realization includes：
(1) it is superimposed external input signal：It realizes from external input frequency quantity signal (square wave, sine wave or triangular wave) and makes an uproar
Acoustical signal is added on on-off model；
(2) internal signal superposition test：On internal signal be superimposed frequency quantity signal (square wave, sine wave or triangular wave),
Noise signal etc..
It should be noted that the switching value fault injection system in the embodiment of the present invention, by trigger condition to specified
On-off model, which carries out direct fault location, can enhance the validity of actual use, accelerate to fault location, user can be with the time
Triggering is configured, covering surface wider array of means of testing more flexible to user；By providing external trigger signal, can enhance with
Association between system under test (SUT), completes joint test, and editable direct fault location sequence control can be simulated complicated in actual use
Scene, do not need user repeat editor and it is excessive participate in, the full-automatic test of complication system may be implemented.
Switching value fault injection system provided in an embodiment of the present invention includes：Host computer and switching value Fault Insertion Equipment,
Wherein：It is communicated to connect between host computer and switching value Fault Insertion Equipment；Host computer sends event to switching value Fault Insertion Equipment
Barrier injection order, direct fault location order include：The order of physical layer direct fault location and electrical layer direct fault location order；Switching value failure
Injection device receives the direct fault location order that host computer is sent；Receive On-off signal terminate into on-off model；Meeting
When fault triggering condition, direct fault location order is parsed, obtains direct fault location instruction；According to direct fault location instruction to switch
It measures signal and carries out direct fault location, generate the switching value fault-signal of injection failure；The switching value fault-signal for injecting failure is led to
Cross the output of output switch parameter end.Switching value fault injection system provided in an embodiment of the present invention passes through the failure that is sent to host computer
Injection order is parsed, and direct fault location instruction is obtained, and instructs switch amount signal to carry out corresponding failure according to direct fault location
Injection may be implemented switch amount signal and carry out physical layer direct fault location and electrical layer direct fault location.
On the basis of switching value fault injection system disclosed above, the invention also discloses a kind of switching value failure notes
Enter method, it is described in detail below：
As shown in figure 5, the embodiment of the invention discloses a kind of switching value fault filling method, this method is applied particularly to out
Fault Insertion Equipment is measured in pass, is communicated to connect between switching value Fault Insertion Equipment and host computer, is executing on-off model failure
When injection, switching value Fault Insertion Equipment is serially connected between the first equipment and the second equipment；This includes the following steps：
S501, receive On-off signal terminate into on-off model.
S502, the direct fault location order that host computer is sent is received.
Specifically, host computer sends direct fault location order, in the present embodiment, above-mentioned failure to switching value Fault Insertion Equipment
Injection is ordered：The order of physical layer direct fault location and electrical layer direct fault location order.
S503, when meeting fault triggering condition, direct fault location order is parsed, obtain direct fault location instruction.
Specifically, fault triggering condition may include time triggered control instruction and outer triggering signal, in the present embodiment,
The external world provides trigger signal input interface, can be combined with system under test (SUT) by this interface, system under test (SUT) meets certain condition
Under can provide Trig control signal, after receiving Trig control signal according to the time or triggering command startup separator injection stream
Journey, this system be configurable to based on external trigger startup separator inject flow, can not also be based on external trigger, only according to when
Between trigger start.
The failure strategy to be injected, direct fault location can be set in direct fault location flow according to time sequencing testing crew
Failure strategy number is unlimited in flow；Direct fault location sequence control module executes first group of plan after startup separator injects flow
Slightly, next group is executed automatically after reaching the time, user is not needed in the process and participates in again, until entire testing process is completed, in addition,
The process and state that direct fault location flow executes are uploaded to application software by ethernet interface module, by software real-time display
Sequence implementation progress, ultimately produces test report.
S504, it instructs switch amount signal to carry out direct fault location according to direct fault location, generates the switching value event of injection failure
Hinder signal.
Specifically, carrying out physical layer direct fault location or electrical layer direct fault location in switching value Fault Insertion Equipment.
S505, the switching value fault-signal for injecting failure is exported by output switch parameter end.
Switching value fault filling method provided in an embodiment of the present invention is applied to switching value Fault Insertion Equipment, switching value
Communicated to connect between Fault Insertion Equipment and host computer, this method by receive On-off signal terminate into on-off model；
Receive the direct fault location order that host computer is sent；When meeting fault triggering condition, direct fault location order is parsed, is obtained
Direct fault location instructs；It instructs switch amount signal to carry out direct fault location according to direct fault location, generates the switching value event of injection failure
Hinder signal；The switching value fault-signal for injecting failure is exported by output switch parameter.Switch amount letter may be implemented in the present invention
Number carry out physical layer direct fault location and electrical layer direct fault location.
As shown in fig. 6, the embodiment of the invention discloses a kind of switching value fault filling method, this method is applied particularly to out
Fault Insertion Equipment is measured in pass, is communicated to connect between switching value Fault Insertion Equipment and host computer, this includes the following steps：
S601, receive On-off signal terminate into on-off model.
S602, the physical layer direct fault location order that host computer is sent is received.
Specifically, host computer sends physical layer direct fault location order to switching value Fault Insertion Equipment.
S603, when meeting fault triggering condition, physical layer direct fault location order is parsed, physical layer failure is obtained
Injection instruction.
Specifically, fault triggering condition may include time triggered control instruction and outer triggering signal, in the present embodiment,
The external world provides trigger signal input interface, can be combined with system under test (SUT) by this interface, system under test (SUT) meets certain condition
Under can provide Trig control signal, after receiving Trig control signal according to the time or triggering command startup separator injection stream
Journey, this system be configurable to based on external trigger startup separator inject flow, can not also be based on external trigger, only according to when
Between trigger start.
The failure strategy to be injected, direct fault location can be set in direct fault location flow according to time sequencing testing crew
Failure strategy number is unlimited in flow；Direct fault location sequence control module executes first group of plan after startup separator injects flow
Slightly, next group is executed automatically after reaching the time, user is not needed in the process and participates in again, until entire testing process is completed, in addition,
The process and state that direct fault location flow executes are uploaded to application software by ethernet interface module, by software real-time display
Sequence implementation progress, ultimately produces test report.
S604, it instructs switch amount signal to carry out physical layer direct fault location according to physical layer direct fault location, generates infusion
Manage the switching value fault-signal of layer failure.
S605, the switching value fault-signal for injecting physical layer failure is exported by output switch parameter end.
Switching value fault filling method in the embodiment of the present invention is applied to switching value Fault Insertion Equipment, switching value event
Barrier injection device and host computer between communicate to connect, this method by receive On-off signal terminate into on-off model；It connects
Receive the physical layer direct fault location order that host computer is sent；When meeting fault triggering condition, to the order of physical layer direct fault location into
Row parsing obtains the instruction of physical layer direct fault location；Switch amount signal is instructed to carry out direct fault location according to physical layer direct fault location,
Generate the switching value fault-signal of injection physical layer failure；The switching value fault-signal for injecting physical layer failure is passed through into switching value
Output end exports.The present invention may be implemented switch amount signal and carry out physical layer direct fault location.
As shown in fig. 7, the embodiment of the invention discloses a kind of switching value fault filling method, this method is applied particularly to out
Fault Insertion Equipment is measured in pass, is communicated to connect between switching value Fault Insertion Equipment and host computer, is executing on-off model failure
When injection, switching value Fault Insertion Equipment is serially connected between the first equipment and the second equipment；This includes the following steps：
S701, receive On-off signal terminate into on-off model.
S702, the electrical layer direct fault location order that host computer is sent is received.
Specifically, host computer sends electrical layer direct fault location order to switching value Fault Insertion Equipment.
S703, when meeting fault triggering condition, electrical layer direct fault location order is parsed, electrical layer failure is obtained
Injection instruction.
Specifically, fault triggering condition may include time triggered control instruction and outer triggering signal, in the present embodiment,
The external world provides trigger signal input interface, can be combined with system under test (SUT) by this interface, system under test (SUT) meets certain condition
Under can provide Trig control signal, after receiving Trig control signal according to the time or triggering command startup separator injection stream
Journey, this system be configurable to based on external trigger startup separator inject flow, can not also be based on external trigger, only according to when
Between trigger start.
The failure strategy to be injected, direct fault location can be set in direct fault location flow according to time sequencing testing crew
Failure strategy number is unlimited in flow；Direct fault location sequence control module executes first group of plan after startup separator injects flow
Slightly, next group is executed automatically after reaching the time, user is not needed in the process and participates in again, until entire testing process is completed, in addition,
The process and state that direct fault location flow executes are uploaded to application software by ethernet interface module, by software real-time display
Sequence implementation progress, ultimately produces test report.
S704, on-off model is converted into current signal by voltage signal, and is reduced, the switch after being improved
Measure signal.
S705, the on-off model after conditioning is converted into digital quantity by analog quantity, obtains the switching value after analog-to-digital conversion
Signal.
S706, electrical layer failure note is carried out to the on-off model after analog-to-digital conversion according to the instruction of electrical layer direct fault location
Enter, generates the switching value fault-signal of injection electrical layer failure.
Specifically, when carrying out electrical layer direct fault location, after now needing switch amount signal to be handled, further according to electrical
To treated, on-off model carries out electrical layer direct fault location to the instruction of layer direct fault location.
S707, the switching value fault-signal for injecting electrical layer failure is converted into analog quantity by digital quantity, obtains digital-to-analogue and turns
The switching value fault-signal of injection electrical layer failure after changing.
S708, the switching value fault-signal of the injection electrical layer failure after digital-to-analogue conversion is converted into voltage by current signal
Signal, and be amplified, the switching value fault-signal of the injection electrical layer failure after being improved.
S709, the switching value fault-signal of the injection electrical layer failure after conditioning is exported by output switch parameter end.
Specifically, after switch amount signal carries out electrical layer direct fault location, need to carry out after handling accordingly signal, then
It has been injected into treated the switching value fault-signal of electrical layer failure and is exported by output switch parameter end.
Switching value fault filling method in the embodiment of the present invention is applied to switching value Fault Insertion Equipment, switching value event
It is communicated to connect between barrier injection device and host computer；This method by receive On-off signal terminate into on-off model；It connects
Receive the electrical layer direct fault location order that host computer is sent；When meeting fault triggering condition, to the order of electrical layer direct fault location into
Row parsing obtains the instruction of electrical layer direct fault location；It is needed at switch amount signal before carrying out electrical layer direct fault location
Reason, the on-off model that obtains that treated；Then according to the instruction of electrical layer direct fault location, to treated, on-off model carries out
Direct fault location generates the switching value fault-signal of injection electrical layer failure；Electrical layer failure note is carried out to carrying out on-off model
It after entering, needs to handle signal accordingly, finally has been injected into the switching value fault-signal of electrical layer failure by treated
It is exported by output switch parameter end.The present invention may be implemented switch amount signal and carry out electrical layer direct fault location.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion so that article or equipment including a series of elements include not only those elements, but also is wrapped
Other elements that are not explicitly listed are included, or further include for this article or the intrinsic element of equipment.Do not having more
In the case of more limitations, the element that is limited by sentence "including a ...", it is not excluded that including above-mentioned element article or
There is also other identical elements in person's equipment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of switching value fault injection system, which is characterized in that including：Host computer and switching value Fault Insertion Equipment, wherein：
It is communicated to connect between the host computer and the switching value Fault Insertion Equipment；
The host computer sends direct fault location order to the switching value Fault Insertion Equipment, and the direct fault location order includes：
The order of physical layer direct fault location and electrical layer direct fault location order；
The switching value Fault Insertion Equipment receives the direct fault location order that the host computer is sent；It is defeated to receive switching value
Enter to terminate into on-off model；When meeting fault triggering condition, the direct fault location order is parsed, obtains failure note
Enter instruction；Direct fault location is carried out to the on-off model according to direct fault location instruction, generates the switching value of injection failure
Fault-signal；The switching value fault-signal of the injection failure is exported by output switch parameter end.
2. system according to claim 1, which is characterized in that the switching value Fault Insertion Equipment includes：Switching value is defeated
Incoming interface, output switch parameter interface, relay module, direct fault location control module and Ethernet interface, wherein：
The input port of the relay module receives the on-off model of the switch value input interface access；
The Ethernet interface receives the physical layer direct fault location order that the host computer is sent, and the physical layer is former
Barrier injection order is sent to the direct fault location control module；
The direct fault location control module when meeting the fault triggering condition, then to the physical layer direct fault location order into
Row parsing obtains the instruction of physical layer direct fault location；The relay module pair is controlled according to physical layer direct fault location instruction
The on-off model carries out physical layer direct fault location, generates the switching value fault-signal of injection physical layer failure；
The switching value fault-signal of the injection physical layer failure is sent to described open by the output port of the relay module
Measure output interface in pass.
3. system according to claim 1, which is characterized in that the switching value Fault Insertion Equipment includes：Switching value is defeated
Incoming interface, output switch parameter interface, relay module, direct fault location control module, analog-digital converter, the first signal condition mould
Block, digital analog converter, second signal conditioning module and Ethernet interface, wherein：
The Ethernet interface receives the electrical layer direct fault location order that the host computer is sent；
The input port of the relay module receives the on-off model of switch value input interface access, and by institute
It states on-off model and is sent to first Signal-regulated kinase；
The on-off model is converted to current signal by first Signal-regulated kinase by voltage signal, and is reduced,
On-off model after the conditioning is sent to the analog-digital converter by the on-off model after being improved；
On-off model after the conditioning is converted to digital quantity by the analog-digital converter by analog quantity, and will be after analog-to-digital conversion
On-off model be sent to the direct fault location control module；
The direct fault location control module when meeting the fault triggering condition, then to the electrical layer direct fault location order into
Row parsing obtains the instruction of electrical layer direct fault location；It is instructed to opening after the analog-to-digital conversion according to the electrical layer direct fault location
Pass measures signal and carries out electrical layer direct fault location, generates the switching value fault-signal of injection electrical layer failure；The injection is electrical
The switching value fault-signal of layer failure is sent to the digital analog converter；
The switching value fault-signal of the injection electrical layer failure is converted to analog quantity by the digital analog converter by digital quantity, and
The switching value fault-signal of injection electrical layer failure after digital-to-analogue conversion is sent to the second signal conditioning module；
The second signal conditioning module is by the switching value fault-signal of the injection electrical layer failure after the digital-to-analogue conversion by electricity
Stream signal is converted to voltage signal, and is amplified, the switching value fault-signal of the injection electrical layer failure after being improved, will
The switching value fault-signal of injection electrical layer failure after the conditioning is sent to the relay module；
The output port of the relay module sends the switching value fault-signal of the injection electrical layer failure after the conditioning
To the output switch parameter interface.
4. system according to claim 2 or 3, which is characterized in that the direct fault location control module includes：Signal receives
Module, time and external signal trigger module, direct fault location module, direct fault location sequence control module and signal send mould
Block, wherein：
The signal receiving module receives the on-off model, and the on-off model is sent to the time and outside
Signal trigger module；
The time and external signal trigger module determined according to the fault triggering condition need to the on-off model into
When row direct fault location, the on-off model is sent to the direct fault location module；
The direct fault location sequence control module receives the direct fault location that the host computer is sent by the Ethernet interface and orders
It enables, and the direct fault location order is sent to the direct fault location module；
The direct fault location module parses the direct fault location order, direct fault location instruction is obtained, according to the failure
Injection instruction carries out direct fault location to the on-off model, obtains the switching value fault-signal of injection failure；
The switching value fault-signal of the injection failure is sent to the output switch parameter interface by the signal transmitting module.
5. system according to claim 4, which is characterized in that the direct fault location module includes：Physical layer direct fault location
Unit and electrical layer direct fault location unit, wherein：
The physical layer direct fault location unit is when meeting the fault triggering condition, then to the physical layer direct fault location order
It is parsed, obtains the instruction of physical layer direct fault location；The relay module is controlled according to physical layer direct fault location instruction
Physical layer direct fault location is carried out to the on-off model；
The electrical layer direct fault location unit is when meeting the fault triggering condition, then to the electrical layer direct fault location order
It is parsed, obtains the instruction of electrical layer direct fault location；After being instructed to the analog-to-digital conversion according to the electrical layer direct fault location
On-off model carries out electrical layer direct fault location.
6. system according to claim 2 or 3, which is characterized in that the direct fault location control module is field-programmable
Gate array FPGA.
7. a kind of switching value fault filling method, which is characterized in that be applied to switching value Fault Insertion Equipment, the switching value event
It is communicated to connect between barrier injection device and host computer, this method includes：
Receive On-off signal terminate into on-off model；
The direct fault location order that the host computer is sent is received, the direct fault location order includes：Physical layer direct fault location order
With electrical layer direct fault location order；
When meeting fault triggering condition, the direct fault location order is parsed, obtains direct fault location instruction；
Direct fault location is carried out to the on-off model according to direct fault location instruction, generates the switching value failure of injection failure
Signal；
The switching value fault-signal of the injection failure is exported by output switch parameter end.
8. the method according to the description of claim 7 is characterized in that when the direct fault location order is ordered for physical layer direct fault location
When enabling, the physical layer direct fault location order is parsed, obtains the instruction of physical layer direct fault location, then according to the physical layer
Direct fault location instruction carries out physical layer direct fault location to the on-off model, generates the switching value failure of injection physical layer failure
The step of signal, including：
Control relay module is instructed to carry out physical layer failure note to the on-off model according to the physical layer direct fault location
Enter, generates the switching value fault-signal of the injection physical layer failure.
9. the method according to the description of claim 7 is characterized in that when the direct fault location order is ordered for electrical layer direct fault location
When enabling, the electrical layer direct fault location order is parsed, obtains the instruction of electrical layer direct fault location, then according to the electrical layer
Direct fault location instruction carries out electrical layer direct fault location to the on-off model, generates the switching value failure of injection electrical layer failure
The step of signal, including：
The on-off model is converted into current signal by voltage signal, and is reduced, the switching value letter after being improved
Number；
On-off model after the conditioning is converted into digital quantity by analog quantity, obtains the on-off model after analog-to-digital conversion；
Electrical layer direct fault location is carried out to the on-off model after the analog-to-digital conversion according to electrical layer direct fault location instruction,
Generate the switching value fault-signal of the injection electrical layer failure.
10. according to the method described in claim 9, it is characterized in that, the switching value fault-signal is passed through output switch parameter
The step of end output, including：
The switching value fault-signal of the injection electrical layer failure is converted into analog quantity by digital quantity, after obtaining digital-to-analogue conversion
Inject the switching value fault-signal of electrical layer failure；
The switching value fault-signal of injection electrical layer failure after the digital-to-analogue conversion is converted into voltage signal by current signal,
And it is amplified, the switching value fault-signal of the injection electrical layer failure after being improved；
The switching value fault-signal of injection electrical layer failure after the conditioning is exported by the output switch parameter end.
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