CN206848803U - MVB failure simulation device - Google Patents
MVB failure simulation device Download PDFInfo
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- CN206848803U CN206848803U CN201720435244.1U CN201720435244U CN206848803U CN 206848803 U CN206848803 U CN 206848803U CN 201720435244 U CN201720435244 U CN 201720435244U CN 206848803 U CN206848803 U CN 206848803U
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Abstract
The utility model provides a kind of MVB failure simulation device, including：Short interruption simulated assembly, interference signal simulated assembly and selecting switch；The input of the short interruption simulated assembly is used to be connected with MVB, and the output end of the short interruption simulated assembly is connected with an input of the selecting switch；The interference signal simulated assembly has first input end and the first output end, and the first input end is used to be connected with MVB；First output end is connected with another input of the selecting switch；The output end of the selecting switch is used to be connected with MVB.MVB failure simulation device provided by the utility model is capable of the failure of simulation multifunctional vehicle bus, is tested with the antijamming capability to MVB equipment.
Description
Technical field
It the utility model is related to MVB technology, more particularly to a kind of MVB fault simulation dress
Put.
Background technology
MVB (Multifunction Vehicle Bus, referred to as：MVB it is) the one of TCN
Part, there is the advantages of fast response time.It is connected on train using each equipment of MVB communications on MVB, forms MVB networks.
Data frame when MVB communicates includes prime frame and the prime frame for carrying address information is sent from the main equipment in frame, MVB networks, if
The slave unit of corresponding address information is replied from frame within a certain period of time, then completes a MVB communications.
In the process of running, MVB networks are often disturbed train by the external world, such as when train driving extremely has high pressure
When in the environment of electricity, if MVB prime frame or being interfered from frame and can produce error code, and then cause communication failure, therefore, be arranged on
MVB equipment on train must have stronger fault-tolerant ability, to ensure that MVB communications are normal.Because the interference in the external world does not have
Certain rule, therefore the test to the antijamming capability of MVB equipment is always a problem in the industry.
Utility model content
The utility model provides a kind of MVB failure simulation device, for simulation multifunctional vehicle bus
Failure, tested with the antijamming capability to MVB equipment.
The utility model provides a kind of MVB failure simulation device, including：Short interruption simulated assembly, do
Disturb signal imitation component and selecting switch；
The input of the short interruption simulated assembly is used to be connected with MVB, the short interruption simulation
The output end of component is connected with an input of the selecting switch；
The interference signal simulated assembly has a first input end and the first output end, the first input end be used for it is more
Function vehicle bus is connected；First output end is connected with another input of the selecting switch；
The output end of the selecting switch is used to be connected with MVB.
MVB failure simulation device as described above, the short interruption simulated assembly include：First opens
Close, second switch and the 3rd switchs；
The first switch is connected between input and the output end of the short interruption simulated assembly；
One end of the second switch is used to receive high level signal, and the other end is defeated with the short interruption simulated assembly
Go out end to be connected；
One end of 3rd switch is used to be grounded, and the other end is connected with the output end of the short interruption simulated assembly.
MVB failure simulation device as described above, the short interruption simulated assembly also include：4th
Switch and first resistor；
One end of the first resistor is used to receive high level signal, and the other end is connected with one end of the described 4th switch；
The other end of 4th switch is connected with the output end of the short interruption simulated assembly.
MVB failure simulation device as described above, the short interruption simulated assembly also include：5th
Switch and second resistance；
One end of the second resistance is connected with the output end of the short interruption simulated assembly, the other end and the 5th switch
One end be connected；The other end of 5th switch is used to be grounded.
MVB failure simulation device as described above, the short interruption simulated assembly also include：6th
Switch；
One end of 6th switch is connected with the output end of the short interruption simulated assembly, and the other end is more with another
The output end of short interruption simulated assembly in function vehicle bus failure simulation device is connected.
MVB failure simulation device as described above, the short interruption simulated assembly also include：7th
Switch and 3rd resistor；
After 7th switch and 3rd resistor series connection, the both ends of the 6th switch are connected in parallel on.
MVB failure simulation device as described above, the interference signal simulated assembly include：Connect successively
Analog-digital converter, signal processor and the digital analog converter connect, the input of the analog-digital converter be used for it is described first defeated
Enter end to be connected, for receiving MVB signal；The output end of the digital analog converter is used for and the described first output
End is connected, and the signal processor is used to handle the MVB signal after analog-to-digital conversion to form the
One interference signal.
MVB failure simulation device as described above, the signal processor is field programmable gate array
FPGA。
MVB failure simulation device as described above, the interference signal simulated assembly are also defeated with second
Enter end, the second input of the interference signal simulated assembly is used to be connected with signal generator, for receiving the signal hair
Second interference signal caused by raw device；
The interference signal simulated assembly also includes operational amplifier, the first input end and digital-to-analogue of the operational amplifier
The output end of converter is connected, and the second input of the operational amplifier is connected with second input, and the computing is put
The output end of big device is connected with first output end, and the operational amplifier is used to believe the first interference signal and the second interference
The 3rd interference signal is produced after number being overlapped.
MVB failure simulation device as described above, the interference signal simulated assembly also include：Signal
Conditioner, the signal conditioner are connected between the analog-digital converter and the first input end.
Technical scheme provided by the utility model, it is total to be used for simulation multifunctional vehicle by using short interruption simulated assembly
Line produces short circuit or open circuit fault, its input are connected with MVB, and is used for using interference signal simulated assembly
Simulation multifunctional vehicle bus is interfered caused failure, and its first input end is connected with MVB；And
Using selecting switch, two inputs output end and interference signal simulation with short interruption simulated assembly respectively of selecting switch
First output end of component is connected, and fault-signal caused by one of component is supplied into MVB, with mould
Intend the state that MVB produces failure, and then for being surveyed to the antijamming capability of MVB networks or MVB equipment
Examination.
Brief description of the drawings
Fig. 1 is the structural representation for the MVB failure simulation device that the utility model embodiment one provides；
Fig. 2 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment two provides
The structural representation of component；
Fig. 3 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment three provides
The structural representation of component；
Fig. 4 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment four provides
The structural representation of component；
Fig. 5 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment five provides
The structural representation of component；
Fig. 6 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment six provides
The structural representation of component；
Fig. 7 is that interference signal is simulated in the MVB failure simulation device that the utility model embodiment seven provides
The structural representation of component；
Fig. 8 is that interference signal is simulated in the MVB failure simulation device that the utility model embodiment eight provides
The structural representation of component.
Reference：
1- short interruption simulated assemblies；11- first switches；12- second switches；
13- the 3rd is switched；14- the 4th is switched；15- the 5th is switched；
16- the 6th is switched；17- the 7th is switched；101- first resistors；
102- second resistances；103- 3rd resistors；2- interference signal simulated assemblies；
21- analog-digital converters；22- signal processors；23- digital analog converters；
24- operational amplifiers；3- selecting switch；4- MVBs；
5- signal generators.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Embodiment one
Fig. 1 is the structural representation for the MVB failure simulation device that the utility model embodiment one provides.
As shown in figure 1, the present embodiment provides a kind of MVB failure simulation device, including：Short interruption simulated assembly 1,
Interference signal simulated assembly 2 and selecting switch 3.
Wherein, the input of short interruption simulated assembly 1 is used to be connected with MVB 4, short interruption simulation
The output end of component 1 is connected with an input of selecting switch 3.Short interruption simulated assembly 1 can produce short circuit or open circuit letter
Number, there is provided to MVB 4, short circuit or open circuit fault for simulation multifunctional vehicle bus 4.
Interference signal simulated assembly 2 has first input end and the first output end, and first input end is used for and MPV
Bus 4 is connected, and the first output end is connected with another input of selecting switch 3.Interference signal simulated assembly 2 can produce dry
Disturb signal, there is provided to MVB 4, caused failure when being interfered for simulation multifunctional vehicle bus 4.
The output end of selecting switch 3 is used to be connected with MVB 4, and selecting switch 3 can be in short interruption mould
Intend selecting one, and the signal output that the component chosen is provided in component 1 and interference signal simulated assembly 2, it is more to simulate
The short circuit of function vehicle bus 4, open circuit or caused failure when being interfered.
It should be noted that in the present embodiment, MVB failure simulation device is to be connected on MPV
In bus, MVB failure simulation device can be connected by MVB with other MVB equipment.
The technical scheme that the present embodiment provides, it is total to be used for simulation multifunctional vehicle by using short interruption simulated assembly 1
Line 4 produces short circuit or open circuit fault, its input are connected with MVB 4, and is used using interference signal simulated assembly 2
It is interfered caused failure in simulation multifunctional vehicle bus 4, its first input end is connected with MVB 4；
And use selecting switch 3, the two inputs output end with short interruption simulated assembly 1 and interference respectively of selecting switch 3
First output end of signal imitation component 2 is connected, and fault-signal caused by one of component is supplied into multifunctional vehicle
Bus 4, the state of failure is produced with simulation multifunctional vehicle bus 4, and then for the anti-interference of MVB networks or MVB equipment
Ability is tested.
Embodiment two
The present embodiment is on the basis of embodiment one, MVB failure simulation device is carried out further
Optimization, is especially further optimized to the implementation of short interruption simulated assembly 1.
The function of short interruption simulated assembly 1 is that simulation multifunctional vehicle bus 4 produces short circuit or open circuit fault signal, then
Those skilled in the art can design a variety of circuit structures, to realize its function.The present embodiment provides a kind of specific implementation,
The scheme that those skilled in the art directly can be provided using the present embodiment, the scheme that can also be provided the present embodiment are repaiied
Change to obtain other schemes.
Fig. 2 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment two provides
The structural representation of component.As shown in Fig. 2 short interruption simulated assembly 1 includes：First switch 11, second switch 12 and the 3rd
Switch 13.
Wherein, first switch 11 is connected between input and the output end of short interruption simulated assembly 1, works as first switch
11 closures, then it is connection between the input of short interruption simulated assembly 1 and output end；It is when first switch 11 disconnects, then short
To disconnect between the input and output end of road open circuit simulated assembly 1, can simulation multifunctional vehicle bus 4 occur it is breaking therefore
Barrier.
One end of second switch 12 is used to receive high level signal VCC, the output of the other end and short interruption simulated assembly 1
End is connected.When second switch 12 closes, then the output end of short interruption simulated assembly 1 connects with high level signal VCC, can simulate
The signal of MVB 4 occurs to power supply short circuit failure.
One end of 3rd switch 13 is used to be grounded, and the other end is connected with the output end of short interruption simulated assembly 1.When the 3rd
The closure of switch 13, then the output head grounding of short interruption simulated assembly 1, can the signal of simulation multifunctional vehicle bus 4 occur pair
Ground short circuit failure.
The operation principle of above-mentioned MVB failure simulation device is：
Selecting switch 3 connects with short interruption simulated assembly 1.
(1) switch of second switch 12 and the 3rd 13 is disconnected, and first switch 11 is disconnected, available for simulation multifunctional car
Open circuit fault occurs for bus 4.
(2) switch of first switch 11 and the 3rd 13 is disconnected, and second switch 12 is closed, available for simulation multifunctional car
The signal of bus 4 occurs to power supply short circuit failure.
(3) first switch 11 and second switch 12 are disconnected, and the 3rd switch 13 is closed, available for simulation multifunctional car
Shorted to earth failure occurs for the signal of bus 4.
Embodiment three
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of short interruption simulated assembly 1 is further optimized.
Fig. 3 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment three provides
The structural representation of component.As shown in figure 3, short interruption simulated assembly 1 also includes：4th switch 14 and first resistor 101.
Wherein, one end of first resistor 101 is used for the one end for receiving high level signal VCC, the other end and the 4th switch 14
It is connected, the other end of the 4th switch 14 is connected with the output end of short interruption simulated assembly 1.It can be appreciated that：First resistor
101 connect and then in parallel with second switch 12 with the 4th switch 14.
First switch 11, the switch of second switch 12 and the 3rd 13 are disconnected, and the 4th switch 14 is closed, then short interruption
The output end of simulated assembly 1 connects by first resistor 101 with high level signal VCC, for simulation multifunctional vehicle bus 4
Signal occurs to hinder short trouble to high band.
Example IV
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of short interruption simulated assembly 1 is further optimized.
Fig. 4 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment four provides
The structural representation of component.As shown in figure 4, short interruption simulated assembly 1 also includes：5th switch 15 and second resistance 102.
Wherein, one end of second resistance 102 is connected with the output end of short interruption simulated assembly 1, and the other end is opened with the 5th
One end of pass 15 is connected, and the other end of the 5th switch 15 is used to be grounded.It can be appreciated that：Second resistance 102 and the 5th switchs
15 series connection and then 13 in parallel with the 3rd switch.
Above-mentioned first switch 11, the switch 14 of the switch of second switch the 12, the 3rd 13 and the 4th are disconnected, and switch 15 by the 5th
Closure, then the output end of short interruption simulated assembly 1 is grounded by second resistance 102, for simulation multifunctional vehicle bus 4
Signal occurs to hinder short trouble to area.
Embodiment five
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of short interruption simulated assembly 1 is further optimized.
Fig. 5 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment five provides
The structural representation of component.As shown in figure 5, short interruption simulated assembly 1 also includes：6th switch 16.
One end of 6th switch 16 is connected with the output end of short interruption simulated assembly 1, and the other end is multi-functional with another
The output end of short interruption simulated assembly 1 in vehicle bus failure simulation device is connected.
For the communication mode of MVB 4, in order to improve fault-tolerant ability, a redundancy can be set total in addition
Line, connected by two lines road between two MVB equipment, such as：A roads and B roads.In default situations, MVB networks pass through A roads
Data are transmitted, when open circuit occur in A roads or signal is abnormal, B roads is switched to and is transmitted data.
Then the 6th switch 16 is exactly to be connected between two MVBs, namely is connected between A roads and B roads.
When first switch, the switch 14 of the switch of second switch the 12, the 3rd the 13, the 4th and the 5th switch 15 disconnect, the 6th switch 16 closes
When, the output end of the short interruption simulated assembly 1 in two MVB failure simulation devices is connected, available for mould
Short trouble between plan MVB signals.
In Fig. 5, the MVB failure simulation device being connected in A roads and B roads can be identical knot
Structure.In order to give top priority to what is the most important, for the MVB failure simulation device being connected in B roads, short interruption simulated assembly 1
First switch 11 is only remained, remaining switch is omitted.
Embodiment six
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of short interruption simulated assembly 1 is further optimized.
Fig. 6 is that short interruption is simulated in the MVB failure simulation device that the utility model embodiment six provides
The structural representation of component.As shown in fig. 6, short interruption simulated assembly 1 also includes：7th switch 17 and 3rd resistor 103.
Wherein, after the 7th switch 17 and 3rd resistor 103 are connected, the both ends of the 6th switch 16 are connected in parallel on.It can also manage
Solve after the 7th switch 17 and the series connection of 3rd resistor 103, to be connected in two MVB failure simulation devices
Between the output end of short interruption simulated assembly 1.
When first switch, the switch 15 of the 13, the 4th switch of the switch of second switch the 12, the 3rd the 14, the 5th and the 6th switch 16 are disconnected
Open, when the 7th switch 17 closes, the output of the short interruption simulated assembly 1 in two MVB failure simulation devices
End is connected by 3rd resistor 103, available for band resistance short trouble between simulation MVB signals.
In Fig. 6, the MVB failure simulation device being connected in A roads and B roads can be identical knot
Structure.In order to give top priority to what is the most important, for the MVB failure simulation device being connected in B roads, short interruption simulated assembly 1
First switch 11 is only remained, remaining switch is omitted.
With reference to technical scheme used by above-mentioned six embodiments, above-mentioned MVB failure simulation device can
The signal open circuit fault of simulation multifunctional vehicle bus 4, signal to power supply short circuit failure, signal shorted to earth failure, signal it
Between short trouble, the resistance of signal band hinder power supply short circuit failure, signal band band resistance short circuit between shorted to earth failure and signal therefore
Barrier.
By using above-mentioned short interruption simulated assembly 1 short circuit or open circuit event are produced for simulation multifunctional vehicle bus 4
Barrier, its input are connected with MVB 4, and total for simulation multifunctional vehicle using interference signal simulated assembly 2
Line 4 is interfered caused failure, and its first input end is connected with MVB 4, and uses selecting switch 3,
Two inputs of selecting switch 3 respectively with the output end of short interruption simulated assembly 1 and interference signal simulated assembly 2 first
Output end is connected, and fault-signal caused by one of component is supplied into MVB 4, with simulation multifunctional car
Bus 4 produces the state of failure, and then for testing the antijamming capability of MVB networks or MVB equipment.
Embodiment seven
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of interference signal simulated assembly 2 is further optimized.
The function of interference signal simulated assembly 2 is that simulation multifunctional vehicle bus 4 produces signal interference fault-signal, example
Such as：Noise jamming, signal delay etc..Then those skilled in the art can design a variety of circuit structures, to realize its function.This reality
Apply example and a kind of specific implementation is provided, the scheme that those skilled in the art directly can be provided using the present embodiment can also
The scheme provided the present embodiment is modified to obtain other schemes.
Fig. 7 is that interference signal is simulated in the MVB failure simulation device that the utility model embodiment seven provides
The structural representation of component.As shown in fig. 7, interference signal simulated assembly 2 includes：Analog-digital converter 21, the signal being sequentially connected
Processor 22 and digital analog converter 23.
Wherein, the input of analog-digital converter 21 is used to be connected with the first input end of interference signal simulated assembly 2, and then
It is connected with MVB 4, for receiving MVB signal.Analog-digital converter 21 is used for the more of analog quantity
Function vehicle bus signal is converted to digital quantity.
The output end of digital analog converter 23 be used for be connected with the first output end of interference signal simulated assembly 2, and then with it is more
Function vehicle bus 4 is connected.Digital analog converter 23 is used to the MVB signal of digital quantity being converted to analog quantity.
Signal processor 22 is connected between analog-digital converter 21 and digital analog converter 23, for after analog-to-digital conversion
MVB signal handled to form the first interference signal, such as the MVB of digital quantity is believed
Number it is overlapped, postpones, the operation such as luffing, forms the first interference signal.First interference signal exports after digital-to-analogue conversion again.
Signal processor 22 can specifically use field programmable gate array (Field-Programmable Gate Array, abbreviation：
FPGA) above-mentioned function is realized.
It is above-mentioned that operation is overlapped to MVB signals, DC quantity, frequency quantity letter are superimposed specially on the MVB signals of input
Number, noise signal machine other signals etc..Delay operation is carried out to MVB signals, it is specially defeated after MVB signal delay certain times
Go out.Luffing operation is carried out to MVB signals, specially the amplitude for inputting MVB signals is adjusted, such as fixed proportion scaling.
The technical scheme that the present embodiment provides, it is total to be used for simulation multifunctional vehicle by using short interruption simulated assembly 1
Line 4 produces short circuit or open circuit fault, its input are connected with MVB 4, and is used using interference signal simulated assembly 2
It is interfered caused failure in simulation multifunctional vehicle bus 4, its first input end is connected with MVB 4,
And use selecting switch 3, the two inputs output end with short interruption simulated assembly 1 and interference respectively of selecting switch 3
First output end of signal imitation component 2 is connected, and fault-signal caused by one of component is supplied into multifunctional vehicle
Bus 4, the state of failure, including short circuit, open circuit fault, and signal delay, superposition are produced with simulation multifunctional vehicle bus 4
Deng trouble light, and then for testing the antijamming capability of MVB networks or MVB equipment.
Embodiment eight
The present embodiment is on the basis of above-described embodiment, MVB failure simulation device is carried out further
Optimization, especially the implementation of interference signal simulated assembly 2 is further optimized.
Fig. 8 is that interference signal is simulated in the MVB failure simulation device that the utility model embodiment eight provides
The structural representation of component.As shown in figure 8, interference signal simulated assembly 2 also has the second input, interference signal simulated assembly
2 the second input is used to be connected with signal generator 5, for the second interference signal caused by reception signal generator 5.
Interference signal simulated assembly 2 also includes operational amplifier 24, and first input end and the digital-to-analogue of operational amplifier 24 turn
The output end of parallel operation 23 is connected, the second input of the second input of operational amplifier 24 and above-mentioned interference signal simulated assembly 2
End is connected, and the output end of operational amplifier 24 is connected with the first output end of above-mentioned interference signal simulated assembly 2, operational amplifier
24 are used to produce the 3rd interference signal after being overlapped the first interference signal and the second interference signal.
When the second input is hanging, namely signal generator 5 is not connected to, then by signal processor 22 to MVB
After signal is handled, retransmit to MVB, simulate the first interference signal.When the second input and signal generator 5 connect
Connect, but when signal processor 22 is not handled MVB signal, the second interference signal only produced by signal generator 5,
Retransmit to MVB.When signal processor 22 is handled MVB signal to obtain the first interference signal, and signal hair
When raw device 5 also produces the second interference signal, operational amplifier 24 is formed after first interference signal and the second interference signal add up
3rd interference signal, send to MVB.The technical scheme that the present embodiment provides, can produce a variety of interference signals, and simulation is more
Kind MVB failures.
Further, before above-mentioned analog-digital converter 21, signal conditioner is also provided with, is connected to analog-to-digital conversion
Between device 21 and first input end, for being pre-processed to the signal of MVB, such as adjustment amplitude, amplification,
Filtering etc..After digital analog converter 23, signal conditioner can also be provided with, after nursing one's health interference signal, is made
The parameters such as the amplitude of its signal are consistent with MVB signals.
In the utility model, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint
Relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can
To express or implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that
At least two, such as two, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect or can communicate with one another；Can be joined directly together, the indirect phase of intermediary can also be passed through
Even, can be two element internals connection or two elements interaction relationship.For one of ordinary skill in the art
For, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. MVB failure simulation device, it is characterised in that including：Short interruption simulated assembly, interference letter Number simulated assembly and selecting switch；The input of the short interruption simulated assembly is used to be connected with MVB, the short interruption simulated assembly Output end be connected with an input of the selecting switch；The interference signal simulated assembly has a first input end and the first output end, the first input end be used for it is multi-functional Vehicle bus is connected；First output end is connected with another input of the selecting switch；The output end of the selecting switch is used to be connected with MVB.
- 2. MVB failure simulation device according to claim 1, it is characterised in that the short interruption mould Intending component includes：First switch, second switch and the 3rd switch；The first switch is connected between input and the output end of the short interruption simulated assembly；One end of the second switch is used to receive high level signal, the output end of the other end and the short interruption simulated assembly It is connected；One end of 3rd switch is used to be grounded, and the other end is connected with the output end of the short interruption simulated assembly.
- 3. MVB failure simulation device according to claim 2, it is characterised in that the short interruption mould Intending component also includes：4th switch and first resistor；One end of the first resistor is used to receive high level signal, and the other end is connected with one end of the described 4th switch；It is described The other end of 4th switch is connected with the output end of the short interruption simulated assembly.
- 4. MVB failure simulation device according to claim 3, it is characterised in that the short interruption mould Intending component also includes：5th switch and second resistance；One end of the second resistance is connected with the output end of the short interruption simulated assembly, the other end and the 5th switch one End is connected；The other end of 5th switch is used to be grounded.
- 5. MVB failure simulation device according to claim 4, it is characterised in that the short interruption mould Intending component also includes：6th switch；One end of 6th switch is connected with the output end of the short interruption simulated assembly, and the other end is multi-functional with another The output end of short interruption simulated assembly in vehicle bus failure simulation device is connected.
- 6. MVB failure simulation device according to claim 5, it is characterised in that the short interruption mould Intending component also includes：7th switch and 3rd resistor；After 7th switch and 3rd resistor series connection, the both ends of the 6th switch are connected in parallel on.
- 7. MVB failure simulation device according to claim 1 or 2, it is characterised in that the interference letter Number simulated assembly includes：Analog-digital converter, signal processor and the digital analog converter being sequentially connected, the analog-digital converter it is defeated Enter end to be used to be connected with the first input end, for receiving MVB signal；The output of the digital analog converter Hold for being connected with first output end, the signal processor is used for the MVB after analog-to-digital conversion Signal is handled to form the first interference signal.
- 8. MVB failure simulation device according to claim 7, it is characterised in that the signal processor For on-site programmable gate array FPGA.
- 9. MVB failure simulation device according to claim 7, it is characterised in that the interference signal mould Intending component also has the second input, and the second input of the interference signal simulated assembly is used to be connected with signal generator, For receiving the second interference signal caused by the signal generator；The interference signal simulated assembly also includes operational amplifier, the first input end of the operational amplifier and digital-to-analogue conversion The output end of device is connected, and the second input of the operational amplifier is connected with second input, the operational amplifier Output end be connected with first output end, the operational amplifier be used for the first interference signal and the second interference signal are entered The 3rd interference signal is produced after row superposition.
- 10. MVB failure simulation device according to claim 7, it is characterised in that the interference signal Simulated assembly also includes：Signal conditioner, the signal conditioner are connected to the analog-digital converter and the first input end Between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435244.1U CN206848803U (en) | 2017-04-24 | 2017-04-24 | MVB failure simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435244.1U CN206848803U (en) | 2017-04-24 | 2017-04-24 | MVB failure simulation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024921A (en) * | 2017-04-24 | 2017-08-08 | 中车大连电力牵引研发中心有限公司 | MVB failure simulation device |
| CN109613377A (en) * | 2019-01-11 | 2019-04-12 | 蜂巢能源科技有限公司 | Battery analog system relay status detects analog circuit and device |
-
2017
- 2017-04-24 CN CN201720435244.1U patent/CN206848803U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024921A (en) * | 2017-04-24 | 2017-08-08 | 中车大连电力牵引研发中心有限公司 | MVB failure simulation device |
| CN107024921B (en) * | 2017-04-24 | 2024-02-20 | 中车大连电力牵引研发中心有限公司 | Multifunctional vehicle bus fault simulator |
| CN109613377A (en) * | 2019-01-11 | 2019-04-12 | 蜂巢能源科技有限公司 | Battery analog system relay status detects analog circuit and device |
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