CN108344912A - A kind of special transformer acquisition terminal failure simulation device - Google Patents
A kind of special transformer acquisition terminal failure simulation device Download PDFInfo
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- CN108344912A CN108344912A CN201810135540.9A CN201810135540A CN108344912A CN 108344912 A CN108344912 A CN 108344912A CN 201810135540 A CN201810135540 A CN 201810135540A CN 108344912 A CN108344912 A CN 108344912A
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- module
- fault simulation
- controllable switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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 present invention discloses a kind of special transformer acquisition terminal failure simulation device comprising special transformer acquisition terminal, fault simulation control module and multiple fault simulation modules；Specially become acquisition Core Feature plate and passes through each fault simulation modular power module, display, button, the radio station 230M, remote communication module, auxiliary terminal and collection module respectively；Each fault simulation module respectively includes controllable switch；What fault simulation control module controlled each controllable switch cut-offs state, to disconnect or change the signal transmission accordingly specially become between acquisition function module and specially change acquisition Core Feature plate, so that the corresponding acquisition function module that specially becomes enters malfunction, realize the simulation to the various failures of special transformer acquisition terminal, the present invention can provide effective means, and then the professional skill of comprehensive raising transformation acquisition terminal equipment operation maintenance personnel for training, the examination of operation maintenance personnel.
Description
Technical field
The present invention relates to special transformer acquisition terminal equipment fault analogue technique fields, especially a kind of to can be achieved to specially becoming acquisition
The special transformer acquisition terminal fault simulation that the cell failures such as terminal shows, button, friendship are adopted, mainboard, communication, auxiliary terminal are simulated
Device.
Background technology
With the continuous social and economic development, rapid growth, a large amount of specially transformer terminals etc. equipment apply to electricity consumption scale therewith
Electrical management field.With the quick increase of special transformer terminals quantity, very big O＆M pressure is brought, needing to establish has professional skill
The O＆M troop of energy.Due to the particularity of electrical equipment, many phenomena of the failure can not possibly reappear at the scene.It needs real by establishing
Room simulated environment is tested, skills training examination is carried out to operation maintenance personnel.In order to enable the simulation of phenomenon of the failure is closer to real failure
Situation, so that training is efficient, examines fair and reasonable, the trouble hunting and dimension that the operation maintenance personnel by examination is grasped
Technical ability is protected, can preferably be served in the maintenance work of practical special transformer acquisition terminal, then needs exploitation one kind that can simulate specially
Become the device of the various phenomena of the failure of acquisition terminal.
Invention content
It is an object of the present invention to provide a kind of special transformer acquisition terminal failure simulation device, the device can to terminal operation,
The phenomena of the failure such as friendship adopts, the communication of auxiliary terminal, public network, 230M private network communications are simulated, concurrent fault simulation process, failure kind
It is all controllable or can flexibly be arranged that rule ordering etc. occur in class, failure.
The technical solution that the present invention takes is specially：A kind of special transformer acquisition terminal failure simulation device, including specially become acquisition
Terminal, fault simulation control module and multiple fault simulation modules controlled respectively by fault simulation control module；
Special transformer acquisition terminal includes specially becoming to acquire Core Feature plate, power module, display, button, the radio station 230M, long-range
Communication module, auxiliary terminal and collection module；
Multiple fault simulation modules include display fault simulation module, button fault simulation module, feature board fault simulation
Module, the radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and Jiao Cai failures
Analog module；
Specially become acquisition Core Feature plate respectively by feature board fault simulation module, display fault simulation module, button event
Hinder analog module, the radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and friendship
Fault simulation module is adopted, power module, display, button, the radio station 230M, the telecommunication mould of special transformer acquisition terminal are correspondingly connected with
Block, auxiliary terminal and collection module；
Each fault simulation module respectively includes controllable switch；What fault simulation control module controlled each controllable switch cut-offs shape
State, to disconnect or change the signal transmission accordingly specially become between acquisition function module and specially change acquisition Core Feature plate so that
The corresponding acquisition function module that specially becomes enters malfunction.
In the present invention, specially change acquisition core board and each function module are respectively the function composition portion of existing special transformer acquisition terminal
Point, without change.Special transformer acquisition terminal Core Feature plate is for realizing the human-computer interaction of special transformer acquisition terminal, AC sampling, auxiliary
The normal functions such as terminal, telecommunication are helped, operable entity special transformer acquisition terminal during training and examining is shown as.
Preferably, fault simulation control module includes instruction input unit and instruction resolution unit；Instruction input unit packet
The fault simulation control button for including corresponding each fault simulation module, instructs resolution unit according to the quilt of each fault simulation control button
Mode of operation controls corresponding fault simulation module and starts.In addition, fault simulation module also can carry out communication realization with host computer
The transmission of control instruction, or realize that the long-range of instruction issues using wireless communication technique, i.e., instruction input unit can be upper
Position machine or remote control terminal.
Preferably, each fault simulation module respectively includes relay, and the controllable switch is relay contact.Fault simulation
The instruction resolution unit of control module uses existing microcontroller, microcontroller to control the on off operating mode of relay and its contact
For the prior art.
Preferably, in feature board fault simulation module, controllable switch includes being serially connected in specially to become acquisition Core Feature plate power supply
The first controllable switch between input terminal and power module on power delivery circuit.Fault simulation control module controls this first can
The disconnection of switch is controlled, can be cut off and specially become acquisition Core Feature plate power input, to analog power phenomenon of the failure.
Further, it includes cpu chip reset circuit specially to become acquisition Core Feature plate, and feature board fault simulation module is also wrapped
Include forced resetting circuit and short-circuit controllable switch, the forced resetting circuit and cpu chip reset circuit simultaneously connect, and forced resetting is electric
Road is grounded by short-circuit controllable switch, and the short-circuit controllable switch of fault simulation control module control cut-offs state, strong to change
Reset circuit shorted to earth state processed.When forced resetting circuit is shorted to earth, then the CPU for specially becoming acquisition Core Feature plate is multiple
It is low level on the pin of position, that is, realizes the forced resetting of cpu chip, specially becoming acquisition Core Feature plate at this time can not normal work
Make, cannot respond to the operation of other function modules, that is, simulate deadlock.
In feature board fault simulation module, short-circuit controllable switch also uses relay contact, for simulating crash and power supply
The relay of failure is two relays set up separately.
Preferably, it shows in fault simulation module, controllable switch includes being serially connected in display control signal input respectively
Between special change acquisition Core Feature plate, between display digital power input terminal and power module and display backlight is electric
Controllable switch between source and power module.Simulation can be respectively used to without display failure and display power failure.
Preferably, in button fault simulation module, controllable switch includes being serially connected in button and specially becoming acquisition Core Feature plate
Between controllable switch on connecting cable；Button and the connecting cable specially become between acquisition Core Feature plate are connected by pluggable terminals
It connects and specially becomes acquisition Core Feature plate.Button can be achieved without response failure in the disconnection for controlling controllable switch, changes key-press matrix connection
The corresponding failure of key errors then can be achieved in the order of connection of cable.
Preferably, hand over adopt in fault simulation module, controllable switch include be serially connected in collection module voltage signal output end with
Specially become acquisition Core Feature plate and hands over the controllable switch adopted between voltage signal inputs；It further includes electric current that fault simulation module is adopted in friendship
Out-of-limit circuit is forced, electric current forces the current input terminal and output end of out-of-limit short circuit collection module, and electric current pressure is out-of-limit
Circuit is switched equipped with out-of-limit control.It can additionally be inputted by relay switching electric current and the order of electric current input, realization are anti-
Simulation to electric energy phenomenon.
Preferably, auxiliary terminal includes remote signal terminal, remote signals terminal and 485 signal terminals；Auxiliary terminal event
Hindering in analog module, controllable switch includes being serially connected in remote signal terminal, remote signals terminal and 485 signal terminals respectively, with
Specially become the controllable switch between acquisition Core Feature plate.It can be used for the failure shape of analog remote signaling open circuit, remote control open circuit and 485 open circuits
State.In addition, auxiliary terminal fault simulation module is additionally operable to realize remote signalling short circuit, remote control short circuit and 485 short circuits.It is with remote signalling terminal
Example realizes output open circuit failure by sealing in relay contact in remote signalling+and remote signalling-signal.In remote signalling+and remote signalling-signal
Between cut-in relay contact, realize output short-circuit failure.
Preferably, in telecommunication fault simulation module, controllable switch includes being serially connected with remote communication module and power supply mould
Controllable switch between block, between remote communication module and antenna and between antenna core wire and ground wire.It can be used for simulating long-range
The power failure and antenna failure of communication module.In addition, can also pass through the access of the signals such as relay switch back, 232 communications
With the state of cut-offfing, communication module failure caused by analog signal poor contact.
The radio station 230M fault simulation unit is simulated for special transformer acquisition terminal 230M communication station phenomena of the failure, by power supply event
Barrier, power are low, are made of without the fault simulations such as hair, frequency errors part receipts.Power failure controls 230M by power supply relay
The plant-grid connection in radio station and disconnection.The low failure of power realizes that radio station transmission power is low by cutting the attenuator of string in the signal
Phenomenon of the failure, the attenuator sealed in can select programmable attenuator, and by the way that the size of attenuation is arranged, analog transmissions power is low
Phenomenon of the failure..There are receipts to be realized without hair failure by forcing disconnection to send enable signal.Pass through program-controlled modification 230M station telecommunications frequency
The pattern simulation communication frequency fault of point.
Advantageous effect
Using the present invention can to terminal operation (button, display etc.), hand over adopt, auxiliary terminal (remote signalling, remote control, pulse,
485 communications etc.), public network communication, the phenomena of the failure such as 230M private network communications are simulated.Fault simulation process control, failure mode,
Rule ordering etc. occur can be flexibly arranged.
The simulation of the failures such as the present invention is by showing special transformer terminals, button, friendship are adopted, mainboard, communication, auxiliary terminal, structure
The controllable device such as a set of trouble location, fault degree, fault correlation has been built, has been provided for training, the examination of operation maintenance personnel
Effective means, can comprehensive raising transformation acquisition terminal equipment operation maintenance personnel professional skill.
Description of the drawings
Fig. 1 show principle of the invention configuration diagram.
Specific implementation mode
It is further illustrated below in conjunction with the drawings and specific embodiments.
Refering to what is shown in Fig. 1, the special transformer acquisition terminal failure simulation device of the present invention, including special transformer acquisition terminal, failure mould
Quasi- control module and multiple fault simulation modules controlled respectively by fault simulation control module；
Special transformer acquisition terminal includes specially becoming to acquire Core Feature plate, power module, display, button, the radio station 230M, long-range
Communication module, auxiliary terminal and collection module；
Multiple fault simulation modules include display fault simulation module, button fault simulation module, feature board fault simulation
Module, the radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and Jiao Cai failures
Analog module；
Specially become acquisition Core Feature plate respectively by feature board fault simulation module, display fault simulation module, button event
Hinder analog module, the radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and friendship
Fault simulation module is adopted, power module, display, button, the radio station 230M, the telecommunication mould of special transformer acquisition terminal are correspondingly connected with
Block, auxiliary terminal and collection module；
Each fault simulation module respectively includes controllable switch；What fault simulation control module controlled each controllable switch cut-offs shape
State, to disconnect or change the signal transmission accordingly specially become between acquisition function module and specially change acquisition Core Feature plate so that
The corresponding acquisition function module that specially becomes enters malfunction.
Embodiment
Specially change acquisition core board and each function module are respectively the functional component of existing special transformer acquisition terminal, without changing
It is dynamic.Special transformer acquisition terminal Core Feature plate is for realizing the human-computer interaction of special transformer acquisition terminal, AC sampling, auxiliary terminal, remote
The normal functions such as Cheng Tongxin show as operable entity special transformer acquisition terminal during training and examining.
Fault simulation control module includes instruction input unit and instruction resolution unit；Instruction input unit includes corresponding each
The fault simulation control button of fault simulation module, instruction resolution unit is according to each fault simulation control button by operation shape
State controls corresponding fault simulation module and starts.In addition, fault simulation module can also carry out communicating realization and controlling with host computer referring to
The transmission of order, or realize that the long-range of instruction issuing using wireless communication technique, i.e. instruction input unit can be host computer or
Person's remote control terminal.
Each fault simulation module respectively includes relay, and the controllable switch is relay contact.Fault simulation controls mould
It is existing to the on off operating mode control of relay and its contact that the instruction resolution unit of block, which uses existing microcontroller, microcontroller,
Technology.
Feature board fault simulation module for simulating special transformer acquisition terminal function of tonic chord plate malfunction, including power failure and
The failures such as crash.Plant-grid connection and disconnection of the power failure by power supply relay control core plate.Deadlock passes through CPU cores
Piece forced resetting realizes button, far controls being not responding to for instruction, simulates deadlock phenomenon.
Specifically：In feature board fault simulation module, controllable switch includes being serially connected in specially to become acquisition Core Feature plate power supply
The first controllable switch between input terminal and power module on power delivery circuit.Fault simulation control module controls this first can
The disconnection of switch is controlled, can be cut off and specially become acquisition Core Feature plate power input, to analog power phenomenon of the failure.
It includes cpu chip reset circuit specially to become acquisition Core Feature plate, and feature board fault simulation module further includes forcing again
Position circuit and short-circuit controllable switch, the forced resetting circuit and cpu chip reset circuit simultaneously connect, and forced resetting circuit passes through short
Road controllable switch ground connection, the short-circuit controllable switch of fault simulation control module control cut-off state, to change forced resetting electricity
Road shorted to earth state.When forced resetting circuit is shorted to earth, then specially become on the cpu reset pin of acquisition Core Feature plate
For low level, that is, the forced resetting of cpu chip is realized, specially becomes acquisition Core Feature plate at this time and can not work normally, can not ring
The operation for answering other function modules, that is, simulate deadlock.
In feature board fault simulation module, short-circuit controllable switch also uses relay contact.
Display fault simulation module is used to simulate the display dependent failure of special transformer acquisition terminal, including power failure, display
Mess code, without display simulation etc..Power failure is realized the access for showing digital power and backlight electric power by power supply relay and broken
Open realization simulation.Display mess code failure connects the phenomenon of the failure that display control data line realizes display data mess code by misconnection, less.
Without display fault simulation part by cut off display control signal line, come realize display screen without display phenomenon.Specifically：
It shows in fault simulation module, controllable switch includes being serially connected in display control signal input respectively to adopt with special change
Between collecting Core Feature plate, between display digital power input terminal and power module and display backlight power supply and power supply
Controllable switch between module.Simulation can be respectively used to without display failure and display power failure.
Button fault simulation module is mainly used for simulating special transformer acquisition terminal key response exception class failure, including without response
Simulation and errored response simulation.Button is real by cutting off connecting cable between button and terminal core feature board without response simulation
Existing, errored response is realized by changing the connecting cable of matrix press-key, passes through the side of the read-write data line in cross-connecting cable
Formula realizes the failure of key code mistake, which shows as button and response mismatches.Specifically：
In button fault simulation module, controllable switch includes being serially connected between button and specially change acquisition Core Feature plate to connect
Controllable switch on cable；Button and the connecting cable specially become between acquisition Core Feature plate are connected specially to become by pluggable terminals and be adopted
Collect Core Feature plate.Button can be achieved without response failure in the disconnection for controlling controllable switch, changes connecing for key-press matrix connecting cable
The corresponding failure of key errors then can be achieved in line sequence.
Friendship adopts fault simulation module and adopts abnormal phenomenon simulation, including lacuna, reverse power, electricity for special transformer acquisition terminal friendship
Flow the phenomena of the failure such as out-of-limit.Lacuna failure, which is cut or disconnected by relay, needs the voltage signal of lacuna to be simulated to realize.Instead
It is completed to power failure simulation by the order that the input of relay switching electric current and electric current export.Electric current is out-of-limit by using relay
Device short circuit current input and output terminal is simulated.Specifically：
Friendship is adopted in fault simulation module, and controllable switch includes being serially connected in collection module voltage signal output end and specially becoming acquisition
Core Feature plate hands over the controllable switch adopted between voltage signal inputs；It further includes that electric current pressure is out-of-limit that fault simulation module is adopted in friendship
Circuit, electric current forces the current input terminal and output end of out-of-limit short circuit collection module, and electric current is forced to set on out-of-limit circuit
There is out-of-limit control to switch.
Auxiliary terminal fault simulation module be used to simulate the remote signalling of special transformer acquisition terminal, remote control, the auxiliary terminals such as 485 it is each
Class phenomenon of the failure, by fault simulations portions such as remote signalling open circuit, remote signalling short circuit, remote control open circuit, remote control short circuit, 485 open circuits, 485 short circuits
Divide and constitutes.Remote signalling fault simulation by signal relay control remote signalling+, remote signalling-signal output open circuit, remote signalling+and remote signalling-be in
Short-circuit condition.Remote control trouble simulation controls normally opened, normally closed, common signal output open circuit by signal relay, normally opened and public,
It is normally closed to be in short-circuit condition with public.485 fault simulations control 485A, 485B signal output open circuit by signal relay,
485A and 485B is in short-circuit condition.Specifically：
Auxiliary terminal includes remote signal terminal, remote signals terminal and 485 signal terminals；Auxiliary terminal fault simulation mould
In block, controllable switch includes being serially connected in remote signal terminal, remote signals terminal and 485 signal terminals respectively, is acquired with special become
Controllable switch between Core Feature plate.It can be used for the malfunction of analog remote signaling open circuit, remote control open circuit and 485 open circuits.In addition,
Auxiliary terminal fault simulation module realize remote signalling short circuit, remote control short circuit and 485 short circuit when, by taking remote signalling terminal as an example, by
Relay contact is sealed in remote signalling+and remote signalling-signal, realizes output open circuit failure.It is accessed between remote signalling+and remote signalling-signal
Relay contact realizes output short-circuit failure.
Telecommunication fault simulation module is used to simulate the telecommunications phenomenon of the failure such as special transformer acquisition terminal GPRS/CDMA,
Including power failure, antenna failure, data-interface failure etc..Power failure controls the power supply of communication module by power supply relay
Access and disconnection.Antenna failure switches antenna input disconnection by signal relay and access state, antenna core wire and ground wire are short
Line state.Access and off-state of the data-interface failure by signals such as signal relay switch back, 232 communications, simulation
Communication module failure caused by signal poor contact.
In telecommunication fault simulation module, controllable switch include be serially connected between remote communication module and power module,
Controllable switch between remote communication module and antenna and between antenna core wire and ground wire.
The radio station 230M fault simulation unit is simulated for special transformer acquisition terminal 230M communication station phenomena of the failure, by power supply event
Barrier, power are low, are made of without the fault simulations such as hair, frequency errors part receipts.Power failure controls 230M by power supply relay
The plant-grid connection in radio station and disconnection.The low failure of power realizes that radio station transmission power is low by cutting the attenuator of string in the signal
Phenomenon of the failure, the attenuator sealed in can select programmable attenuator, and by the way that the size of attenuation is arranged, analog transmissions power is low
Phenomenon of the failure..There are receipts to be realized without hair failure by forcing disconnection to send enable signal.Pass through program-controlled modification 230M station telecommunications frequency
The pattern simulation communication frequency fault of point.
The simulation of the failures such as the present invention is by showing special transformer terminals, button, friendship are adopted, mainboard, communication, auxiliary terminal, structure
The controllable device such as a set of trouble location, fault degree, fault correlation has been built, has been provided for training, the examination of operation maintenance personnel
Effective means improves the professional skill of operation maintenance personnel.
The above is only a preferred embodiment of the present invention, it should be pointed out that：Those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of special transformer acquisition terminal failure simulation device, characterized in that including special transformer acquisition terminal, fault simulation control module
With multiple fault simulation modules controlled respectively by fault simulation control module；
Special transformer acquisition terminal includes specially becoming to acquire Core Feature plate, power module, display, button, the radio station 230M, telecommunication
Module, auxiliary terminal and collection module；
Multiple fault simulation modules include display fault simulation module, button fault simulation module, feature board fault simulation module,
The radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and Jiao Cai fault simulations
Module；
Specially become acquisition Core Feature plate respectively by feature board fault simulation module, display fault simulation module, button failure mould
Quasi- module, the radio station 230M fault simulation module, telecommunication fault simulation module, auxiliary terminal fault simulation module and Jiao Cai events
Hinder analog module, be correspondingly connected with the power module of special transformer acquisition terminal, display, button, the radio station 230M, remote communication module,
Auxiliary terminal and collection module；
Each fault simulation module respectively includes controllable switch；What fault simulation control module controlled each controllable switch cut-offs state,
To disconnect or change the signal transmission accordingly specially become between acquisition function module and specially change acquisition Core Feature plate so that corresponding
Special change acquisition function module enter malfunction.
2. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that fault simulation control module packet
Include instruction input unit and instruction resolution unit；Instruction input unit includes the fault simulation control of corresponding each fault simulation module
Button, instruction resolution unit, by mode of operation, control corresponding fault simulation module and open according to each fault simulation control button
It is dynamic.
3. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that each fault simulation module difference
Including relay, the controllable switch is relay contact.
4. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that feature board fault simulation module
In, controllable switch includes being serially connected in specially to become between acquisition Core Feature plate power input and power module on power delivery circuit
The first controllable switch.
5. special transformer acquisition terminal failure simulation device according to claim 4, characterized in that specially become acquisition Core Feature plate
Including cpu chip reset circuit, feature board fault simulation module further includes forced resetting circuit and short-circuit controllable switch, described strong
Reset circuit processed and cpu chip reset circuit simultaneously connect, and forced resetting circuit is grounded by short-circuit controllable switch, fault simulation control
The short-circuit controllable switch of module control cut-offs state, to change forced resetting circuit shorted to earth state.
6. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that display fault simulation module
In, controllable switch includes being serially connected in display control signal input respectively and specially becoming between acquisition Core Feature plate, display
Controllable switch between digital power input terminal and power module and between display backlight power supply and power module.
7. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that button fault simulation module
In, controllable switch includes the controllable switch being serially connected between button and specially change acquisition Core Feature plate on connecting cable；Button with
The connecting cable specially become between acquisition Core Feature plate is connected by pluggable terminals specially becomes acquisition Core Feature plate.
8. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that fault simulation module is adopted in friendship
In, controllable switch includes being serially connected in collection module voltage signal output end to acquire Core Feature plate and hand over that adopt voltage signal defeated with specially becoming
Enter the controllable switch between end；It further includes that electric current forces out-of-limit circuit, electric current to force out-of-limit circuit short that fault simulation module is adopted in friendship
The current input terminal and output end of collection module are connect, and electric current forces out-of-limit circuit to be switched equipped with out-of-limit control.
9. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that auxiliary terminal includes that remote control is believed
Number terminal, remote signals terminal and 485 signal terminals；In auxiliary terminal fault simulation module, controllable switch includes concatenating respectively
In remote signal terminal, remote signals terminal and 485 signal terminals, with the special controllable switch become between acquisition Core Feature plate.
10. special transformer acquisition terminal failure simulation device according to claim 1, characterized in that telecommunication fault simulation
In module, controllable switch includes being serially connected between remote communication module and power module, between remote communication module and antenna, with
And the controllable switch between antenna core wire and ground wire.It can be used for simulating the power failure and antenna failure of remote communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810135540.9A CN108344912A (en) | 2018-02-09 | 2018-02-09 | A kind of special transformer acquisition terminal failure simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135540.9A CN108344912A (en) | 2018-02-09 | 2018-02-09 | A kind of special transformer acquisition terminal failure simulation device |
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| CN108344912A true CN108344912A (en) | 2018-07-31 |
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| CN201810135540.9A Pending CN108344912A (en) | 2018-02-09 | 2018-02-09 | A kind of special transformer acquisition terminal failure simulation device |
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