CN209560545U - Guided missile signal environment simulation system - Google Patents
Guided missile signal environment simulation system Download PDFInfo
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- CN209560545U CN209560545U CN201920656454.2U CN201920656454U CN209560545U CN 209560545 U CN209560545 U CN 209560545U CN 201920656454 U CN201920656454 U CN 201920656454U CN 209560545 U CN209560545 U CN 209560545U
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Abstract
The utility model discloses a kind of guided missile signal environment simulation systems, are related to signal pickup assembly technical field.The simulation system includes signal acquisition adaptation, system host and digital playback signal adapter, and the system host includes mainframe box and digital signal environmental simulation card, collection of simulant signal storage card, digital signal storage playback card, bus module, controller and power module in mainframe box.The acquisition and playback system are using standardization, modularized design, digital signal environmental simulation card and collection of simulant signal storage card are PXIe standard 3U board, mainframe box uses standard PXIe 3U cabinet, acquiring adapter and playback adapter is also standalone module, and each module installation, maintenance, test are all very convenient.
Description
Technical field
The utility model relates to signal environment simulation system technical field more particularly to a kind of guided missile signal environment simulation systems
System.
Background technique
Under the production domesticization of certain import missile equipment electronics spare parts and the repairing of other electronics and background, need
It provides during the laboratory test of electronic component and is inputted with the consistent signal of actual load signal environment, and test process cannot influence
Equipment normal operating conditions causes service life of equipment decline, even damages.To solve this problem, need to study missile equipment electricity
The key technology of subassembly signal environment simulation, and develop software and hardware system.Currently, general technical solution be using " host+
Adapter " structure, but existing system cannot achieve digital signal environmental simulation card and multichannel analog signals capture card at present
Modulus signal mixed synchronization sampling, for different equipment electronic components, system is with less versatility and expansion.
Utility model content
Technical problem to be solved in the utility model is how to provide a kind of versatility and the preferable guided missile letter of scalability
Number environmental simulation system.
In order to solve the above technical problems, technical solution adopted in the utility model is: a kind of guided missile signal environment simulation
System, it is characterised in that: including signal acquisition adaptation, system host and digital playback signal adapter, the system host packet
Include mainframe box and the digital signal environmental simulation card in mainframe box, collection of simulant signal storage card, digital signal storage
Playback card, bus module, controller and power module, the signal input part of the signal acquisition adapter receive change system hair
The signal sent, the signal output end of the signal acquisition adapter are believed with the digital signal environmental simulation card and simulation respectively
The signal input part connection of number acquisition storage card, the digital signal environmental simulation card and collection of simulant signal storage card pass through total
Wire module is bi-directionally connected with the controller, and the digital signal storage playback card passes through the bus module and the controller
It is bi-directionally connected, the signal output end of the digital signal storage playback card and the signal of the digital playback signal adapter input
End connection, the output end of the digital playback signal adapter are the signal output end of the system, the digital signal environment
Analog card, collection of simulant signal storage card and digital signal storage playback card are controlled by the controller, in the control
Data are handled under the control of device processed, the power supply for the module for needing to power in the power module and the simulation system is defeated
Enter end connection, for providing working power for it.
A further technical solution lies in: the digital signal environmental simulation card includes the first external interface module, first
Impedance matching unit, level conversion unit, the first data storage cell, first control unit and the first bus unit, it is described
First external interface is through first impedance matching unit letter with the level conversion unit and first control unit respectively
The connection of number input terminal, the level conversion unit are used to provide working power for the first control unit, and described first controls
The first via of the output end of unit is connect through the first data storage interface unit with first data storage cell, and described first
Second tunnel of control unit is connect with first bus unit.
A further technical solution lies in: the collection of simulant signal storage card includes the second external interface module, second
Impedance matching module, filter circuit module, ADC unit, the second control unit, memory module and the second bus unit, it is described
Second external interface module is connect through second impedance matching module with the signal input part of the filter circuit module, described
The output end of filter circuit module is connect through operational amplifying module with the signal input part of the ADC unit, the ADC unit
Output end is connect with the signal input part of the second control unit, and the first via of the output end of second control unit is through the second number
It is connect according to storage interface unit with second data storage cell, the second tunnel of second control unit is total with described second
The connection of line unit, the control output end of second control unit is connect with the control terminal of the ADC unit, for controlling its work
Make.
A further technical solution lies in: the signal acquisition adaptation includes the double needle socket of the first 50pin, second
The double needle socket of 50pin, 74 serial driving chips, 72 needle sockets and 72 pin plugs, the double needle socket of the first 50pin and
The 2nd double needle socket of 50pin is bi-directionally connected with described 74 serial driving chips, and described 74 serial driving chips are through 72 needle
Socket is connect with 72 pin plug.
A further technical solution lies in: the system host further includes human-computer interaction module, the human-computer interaction module
It is bi-directionally connected with the controller, for input control order and shows the data of output.
Preferably, the human-computer interaction module includes the touch screen being bi-directionally connected with the controller.
Preferably, the human-computer interaction module include the key module being connect with the signal input part of the controller and
The display module being connect with the signal output end of the controller.
A further technical solution lies in: the system host further includes the extension host being embedded on cabinet.
The beneficial effects of adopting the technical scheme are that the system adds the scheme of adapter using platform,
Platform refers to host system, and the signal environment being made up of acquisition adapter acquisition equipment electronics group parts input signal will be believed
Number environmental information is stored in host system；When needing to equipment ministry of electronics industry's module testing, it is defeated that signal is carried out by playback adapter
Out to drive tested equipment electronics parts.The acquisition and playback system are using standardization, modularized design, digital signal environment
Analog card and collection of simulant signal storage card are PXIe standard 3U board, and mainframe box uses standard PXIe 3U cabinet, and acquisition is suitable
Orchestration and playback adapter are also standalone module, and each module installation, maintenance, test are all very convenient.In addition, PXIe case back plate mentions
The synchronization firing line to each board has been supplied, can satisfy using some digital signal and started all numbers, simulate board
The synchronized playback of synchronous acquisition and digital signal.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the functional block diagram of simulation system described in the utility model embodiment；
Fig. 2 is the structural schematic diagram of system host in system described in the utility model embodiment；
Fig. 3 is the functional block diagram of digital signal environmental simulation card in system described in the utility model embodiment；
Fig. 4 is the acquisition of digital signal environmental simulation card signal and playback flow chart in the utility model embodiment；
Fig. 5 is the functional block diagram of collection of simulant signal storage card in system described in the utility model embodiment；
Fig. 6 is the signal processing flow flow chart of ADC analog-to-digital conversion module in the utility model embodiment；
Fig. 7 is the functional block diagram of signal acquisition adapter described in the utility model embodiment；
Fig. 8 is the attachment structure schematic diagram of signal acquisition adaptation and system host in the utility model embodiment；
Fig. 9 is the device layout schematic diagram that adapter is played back in the utility model embodiment；
Figure 10 is the theory of constitution block diagram of system software in the utility model embodiment；
Figure 11 is the setting of tested board pin IO information and load schematic diagram in the utility model embodiment；
Figure 12 is analog board data waveform display interface figure in the utility model embodiment；
Figure 13 is digiboard data waveform display interface figure in the utility model embodiment；
Figure 14 is card IO information bank input and output figure in the utility model embodiment.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that and described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
As shown in Figure 1, the utility model embodiment discloses a kind of guided missile signal environment simulation system, including signal acquisition
Adaptation, system host and digital playback signal adapter.The system host includes mainframe box and the number in mainframe box
Word signal environment analog card, collection of simulant signal storage card, digital signal storage playback card, bus module, controller and power supply
The structure of module, the mainframe box is as shown in Figure 2.The signal input part of the signal acquisition adapter receives change system and sends
Signal, the signal output end of the signal acquisition adapter respectively with the digital signal environmental simulation card and analog signal
The signal input part connection of storage card is acquired, the digital signal environmental simulation card and collection of simulant signal storage card pass through bus
Module is bi-directionally connected with the controller, and the digital signal storage playback card is double by the bus module and the controller
To connection, the signal output end of the digital signal storage playback card and the signal input part of the digital playback signal adapter
Connection, the output end of the digital playback signal adapter are the signal output end of the system, the digital signal environment mould
Quasi- card, collection of simulant signal storage card and digital signal storage playback card are controlled by the controller, in the control
Data are handled under the control of device, the power input for the module for needing to power in the power module and the simulation system
End connection, for providing working power for it.
The system uses platform+adapter scheme, and platform refers to host system, passes through acquisition adapter acquisition equipment
Signal environment information is stored in host system by the signal environment that electronics group parts input signal is constituted；It is needing to equipment electronics
When parts are tested, signal output is carried out by playback adapter to drive tested equipment electronics parts.The acquisition and playback
For system using standardization, modularized design, digital signal environmental simulation card and collection of simulant signal storage card are PXIe standard
3U board, mainframe box use standard PXIe 3U cabinet, and acquisition adapter and playback adapter are also standalone module, each module peace
Dress, maintenance, test are all very convenient.In addition, PXIe case back plate provides the synchronization firing line of each board, it can satisfy and adopt
Start the synchronized playback of all numbers, the synchronous acquisition of simulation board and digital signal with some digital signal.
When signal acquisition, signal acquisition adapter is believed after being handled the signal of equipment by the number on system host
Number environmental simulation card and collection of simulant signal card are acquired.When signal playback, system host is adapted to by digital playback signal
Device carries out signal playback, and the selection of signal and the input by host computer definition signal can be carried out on adapter manually by playing back
Output, and it is equipped with the various test interfaces of signal.In system, digital signal is played back using the excitation as corresponding component,
Analog signal is generated by equipment itself, is exported by adapter, only the enterprising traveling wave shape of this test macro computer is shown.
The environmental simulation system can synchronize acquisition to the key signal of change system component by matching tooling
And store, while the test equipment can also synchronize playback to collected signal according to the different demands of user, it is quilt
The verifying of the generation and output signal of surveying component pumping signal provides foundation, realizes the complete and accurate under laboratory condition to test specimen
Test.
Digital signal environmental simulation card veneer has 32 tunnels, three block number letter stencils totally 96 tunnel.Each digital one-board signal environment mould
Quasi- rate is 100M/s, bandwidth 400MB/s, and caching is 2GB on plate, and when acquisition is reached required by multi collect and adopted
Collect data volume, acquisition mode has normal mode and pin triggering mode.It is pre-loaded to delay on playback of data to plate when playback
It deposits, can choose single playback and continuous playback, single playback is terminated after having played back the 2GB data cached on plate, continuously
Playback is the 2GB data on playback cycle plate, until user terminates manually.
Collection of simulant signal storage card veneer is 16bit, acquisition rate 100M/s, list after having 8 tunnels, every road AD to transfer
Strip width is 1.6GB/s, and caching is 2GB on plate, and when acquisition reaches required acquisition data volume by multi collect, acquires mould
Formula has normal mode and pin triggering mode, and the synchronous triggering signal of both of which is generated by digiboard, to realize simulation
Plate and digiboard synchronized sampling.
In collection process, measured number signal is carried out signal shaping and driving enhancing, is then led to by acquisition adapter
It crosses acquisition switching cable and gives digiboard.In replayed section, the data in digiboard carry out signal choosing by playback adapter
Enhancing is selected and driven, measured number circuit is then passed to.
Digital signal environmental simulation card and collection of simulant signal storage card are fixed in signal environment simulation framework, outside board
Portion's interface is attached by acquisition adapter and playback adapter with measured number or simulation card.When acquisition, card
It is inserted in combination and works with combining, card only acquires its signal by associating power supply, signal environment simulation system.It is single to insert
When part plate is played back offline, card is powered by signal environment simulation system.
System host is the NI PXIe standard PC case of buying, and maximum supports 17 pieces of functional cards.Host and other boards it
Between connected by the backboard of cabinet inside, connection bus standard is CPCIe.The controller and cabinet of the host are PXIe bus
Structure, compatible CPCIe bus.The digital signal environmental simulation card ground certainly and collection of simulant signal card installed in cabinet are all made of
CPCIe bus has the mechanical performance more reliable and stable compared to PXIe.By borrowing except 0 slot in first plug-in card slot position
Synchronous and trigger signal, realizes and can be realized accurate synchronization between each capture card.
It is illustrated in figure 3 the functional block diagram of digital signal environmental simulation card, the digital signal environmental simulation card includes the
One external interface module, the first impedance matching unit, level conversion unit, the first data storage cell, first control unit with
And first bus unit, first external interface through first impedance matching unit respectively with the level conversion unit with
And the signal input part connection of first control unit, the level conversion unit are used to provide work for the first control unit
The first via of power supply, the output end of the first control unit is stored through the first data storage interface unit and first data
Unit connection, the second tunnel of the first control unit is connect with first bus unit.
Digital signal environmental simulation card mainly completes acquisition and the playback function of missile equipment ministry of electronics industry component digital quantity, real
Acquisition channel number and sampling rate can be configured according to demand in the application of border, input digital quantity can be carried out after the completion of configuration
Acquisition, collected data transmission stores digital quantity to memory module.To further analyze data, can will deposit
Storage module in data quickly passed in a manner of RocketIO GTX by CPCIe bus host computer do waveform show, data divide
Analysis and processing etc..
In replayed section, digital signal environmental simulation card mainly completes the output function of digital quantity.Board will be stored in advance
These digital quantities are output to through signal playback adapter tested by data in a storage module according to actual timing requirements
Electronics parts, the data in memory module can be the data for previously having acquired and directly having stored, are also possible to host computer into one
Data that step selects or treated, are quickly loaded into memory module in a manner of RocketIO GTX by CPCIe bus.
When acquisition, external digital signal is by DB78 plug, into electrical level transferring chip.5V or 3.3V signal can be converted
For the 3.3V signal for connecting FPGA.When playback, equally the 3.3V signal of FPGA can be switched into 5V or 3.3V signal, then pass through
DB78 is sent out.
Every time when acquisition, signal is converted to parallel data through FPGA, then keeps in (capacity in DDR3 memory grain
2GB), after acquisition, then by CPCIe plug, WINDOWS controller is sent to by CPCIe bus, large capacity is arrived in storage
On hard disk.
Every time when playback, WINDOWS controller first transfers data to DDR3 particle and is cached, then is read simultaneously by FPGA
Serial data is converted to, then passes out to DB78 plug.It is cached using DDR3 in acquisition and replayed section primarily to being mentioned
The acquisition and output speed of high RST.
DB78 plug contains the connection of 32 railway digital signals, and contact defines table 1.
1 auxiliary system of table composition
| Serial number | Function | Remarks |
| 1~32 | 32 railway digital signals | 3.3V or 5V |
| 69~78 | GND | Digitally |
| 67~68 | +5V | Give acquisition adapter power supply |
By the jumper cap on plate in the upper and lower position of J6, in that case it can be decided that DB78 interface signal is 5V or 3.3V.Work as connection
When acquiring adapter, jumper cap should be shorted the 1 of J6,2 feet, be at this time 3.3V；When connection plays back adapter, jumper cap should be shorted
2,3 foot is at this time 5V signal.This process needs to carry out human configuration and adjustment according to equipment actual characteristic.Its signal flow is such as
Shown in Fig. 4.
Digital signal environmental simulation card realizes the core control of digital signal acquiring and playback, and specific targets are as follows:
1) there are 32 digital signal channels；
2) every channel can be independently set to input or export；
3) external interface is standard Transistor-Transistor Logic level；
4) sample rate: 0MHZ ~ 100MHz；
5) buffer memory capacity: 2GB；
6) transfer bus: CPCIe；
7) DB78 interface signal voltage: 5V or 3.3V；
The expansion in channel is realized by the way of increasing board with can be convenient.
Impedance matching unit: digital signal reaches digital signal environmental simulation card via adapter and cable, due to cable
Length is longer, and signal integrity will receive influence, necessarily will affect collection result, therefore in addition to needing to carry out resistance on adapter
Outside anti-matching, it is also necessary to carry out secondary impedance matching in this board front end, which is located in expansion board.
Level conversion unit: since acquisition and storage module works under 3.3V voltage on plate, and the outside of coming is acquired
Signal is 5V TTL signal, it is therefore desirable to carry out level conversion, which is located in expansion board.
Data storage cell: signal acquisition and the data of playback are stored in high-speed high capacity memory module, utilize this
Interface realizes the write-in and reading to storage board.
Control unit: digital card integral control function realized by FPGA, the logic control of the acquisition including signal and playback,
The Data Migration of memory module and the interface logic of CPCIe interface chip are realized that project is adopted by its internal programmable logic
With XILINX Kintex-7 series of X C7K325T type fpga chip.
External interface unit: the bridge joint of CPCIE bus and LOCAL BUS, benefit are realized using CPCIe interface chip in the part
The data fast transferring between host computer and board is realized with the DMA transfer of CPCIE bus.
As shown in figure 5, the collection of simulant signal storage card includes the second external interface module, the second impedance matching mould
Block, filter circuit module, ADC unit, the second control unit, memory module and the second bus unit connect outside described second
Mouth mold block is connect through second impedance matching module with the signal input part of the filter circuit module, the filter circuit mould
The output end of block is connect through operational amplifying module with the signal input part of the ADC unit, the output end of the ADC unit and
The signal input part of two control units connects, and the first via of the output end of second control unit is through the second data memory interface
Unit is connect with second data storage cell, and the second tunnel of second control unit and second bus unit connect
It connects, the control output end of second control unit is connect with the control terminal of the ADC unit, for controlling its work.
Collection of simulant signal storage card mainly completes acquisition and the playback function of missile weapon system ministry of electronics industry component analog quantity
Can, acquisition channel number and sampling rate can be configured in practical application, can be simulated after the completion of configuration according to demand
The acquisition of amount, analog signal enter AD9268 type ADC unit after front end impedance matching module, filter circuit module, then
Data after A/D is converted carry out data storage by storage card again after giving control unit processing.To further analyze number
According to, the data in storage card can quickly be passed in a manner of RocketIO GTX by CPCIe bus host computer store, waveform
Display, data analysis and process etc..
Similar with the collection process of digiboard, analog signal enters board by SMA connector, then passes through amplifier and AD core
After piece conversion, it is sent into control unit (can be FPGA).FPGA keeps in DDR3 particle (2GB capacity) for data are acquired, to
After acquisition, then it is transmitted to by CPCIe bus the controller of system host.
Its specific targets is as follows:
1) sample rate: 100MHZ；
2) buffer memory capacity: 2GB；
3) transfer bus: CPCIe；
4) SMA interface signal voltage: 2Vp-p；
5) analog signal channel number: 8 tunnels；
The expansion in channel is realized by the way of increasing board with can be convenient.
Signal processing:, should be first since the analog signal voltage range acquired from equipment is larger (90mV ~ 200V)
Signal conversion, rectification, filtering are carried out so that the voltage after conversion within the allowed band of ADC, while will also guarantee that conversion is smart
Degree, signal conversion part point answers setting signal gain shift thus, user can before signal acquisition on upper computer software to every
A TCH test channel is configured, and the gear selection in channel is realized by relay switch array.Consider from scale and acquisition precision,
Design is 9 grades: i.e. 256,64,16,4,1,1/4,1/16,1/64,1/256 following, then the range of signal theoretical value acquired is 1.7mV
~460.8V.The influence that interference signal generates when Collection in order to prevent, will rationally design power supply and rectification, filtering
Circuit etc..
It the circuit designs such as converts the voltage into, rectify on adapter with existing, cause adapter excessively complicated, huge,
And the poor way of versatility is compared, the application will occupy this biggish partial circuit of volume and be put on host, substantially reduce
The scale (adapter end only needs to carry out isolation) of adapter, and setting using matrix switch selection different gains gear
Meter, also improves the versatility of host.Adapter under this design scheme, in addition to the general isolation comprising occupying volume very little
Outside circuit, without considering specific signal processing (in host side processing), connection function is mainly played, and only need to be every type
A kind of adapter of the Interface design of type avoids and is tested electronic component one dedicated adapter of design for each, can
To greatly reduce adapter quantity.
ADC module: ADC module complete input analog quantity acquisition, the module include impedance matching circuit, filter circuit and
A/D unit, structure are as shown in Figure 6.
The missile equipment analog quantity to be acquired is low frequency signal in base band, and frequency is no more than 36MHz, according to sampling thheorem,
Keep signal undistorted, the sample rate of ADC cannot be below 100MHz, carry out reasonable selection to ADC chip according to application environment.
The quasi- AD9268 chip for selecting ADI company, it is a 4 channel, 16,80MSPS/105MSPS/125MSPS analog-digital converter
(ADC), sampling hold circuit in built-in piece, conversion rate reach as high as 125MSPS, have outstanding dynamic property and low-power consumption
Characteristic, the ADC are powered using 1.8V single supply, sample rate clock LVPECL/CMOS/LVDS compatible type, are answered for most of
For, it is not necessarily to external reference-voltage source or driving element.
Memory module: storage module be used for saves acquisition data, each storage card storage depth be 512GB, totally 4 pieces,
Total capacity 2048GB can be extended.Storage unit is designed using high speed EMMC storage chip, by external interface by simulating
Capture card and digital signal environment analog card carry out the write-in and reading of storing data.
As shown in fig. 7, the signal acquisition adaptation is inserted including the double needle socket of the first 50pin, the 2nd 50pin double-row needle
Seat, 74 serial driving chips, 72 needle sockets and 72 pin plugs, the double needle socket of the first 50pin and the 2nd 50pin are double
Needle socket is bi-directionally connected with described 74 serial driving chips, and described 74 serial driving chips are through 72 needle socket and 72 needle
Plug connection.Signal acquisition adapter for signal acquisition isolation (impedance matching) with connect, adopted online with reducing this system
It to the influence of equipment when collection, is accounted for from the angle of versatility, the kind of adapter will be lacked as far as possible, and structure is simple as far as possible.
Signal acquisition adapter is patch analog signal first, its bottom is 72 pin plugs, for replacing in combination
Digiboard.The digiboard of original combination is inserted on 72 needle sockets in the middle part of adapter.In the digiboard course of work, 72 railway digitals
Signal can pass out to acquisition cable after 74 serial driving chip shapings, driving.Signal through overdriving is adapted to and subtracts
Signal quality caused by few length of cable declines.
The 74 driving chips power supply for acquiring adapter is provided by system host by acquisition cable.Digiboard is powered still
It is provided by combination, the two common ground connection.
One adapter of every kind of design only needed to the above interface, 20 kinds altogether.There was only isolation circuit in adapter, and not
Consider each road signal type, signal only need to be guided to host, signal is handled by host, therefore volume can be made very
It is small.Also to ensure that signal is disturbed less in transmission process, the cable length between adapter and host cannot be longer than 2
Rice, and to use the shielded cable of impedance very little.
The function that adapter will have structure to transfer simultaneously, that is, so-called threeway, in order to draw signal in acquisition
Out, just directly the isolation circuits such as impedance matching are designed into this threeway in design.Adapter passes through private cable and master
Machine is connected.When designing adapter, to consider space factor, design reasonable structure type according to the actual situation, when necessary with
Combined coupling part can use stub cable.Since host side has 96 railway digital interfaces, and be divided into 3 groups, thus adapter with
It is connected between host with transit cable.Adapter (threeway), transit cable structure are as shown in Figure 8.
It can be seen from the figure that signal is drawn using the external interface of adapter (threeway), one with transit cable
Connection, the external interface needle number of adapter can be identical as the equipment socket needle number of connection, but can use smaller mark
Quasi- socket reduces the type of socket to reduce threeway volume.It is suitable to should be each type of Interface design one kind on unit under test
Orchestration needs 20 kinds altogether, at least needs 20 acquisition adapters, in the case where having multiple same-interfaces on an electronic component,
The quantity of adapter will also increase.
The nearly host side of transit cable uses one point three of structure type, each 32 needle of connector, respectively with the number of host
Signal environment analog card is connected, and other end is then connected with threeway external interface, if having multiple connect on tested electronic combination/component
Mouthful, then this one end also will be using the structure type more than one point.According to the needle number of interface and the combination of interface on equipment electronic component
Form needs for every kind of special transit cable of different Combination Designs to guarantee the connection for closing each interface with group.Simulation
Signal can be directly used coaxial cable and connect with host.In order to reduce the influence that cable generates signal, Ying Caiyong shielding,
The good quality cables of conductibility.
The major parameter for acquiring adapter is as follows:
1) port number: 72 railway digital signals；
2) length of cable: 1~2 meter；
3) drive output signal voltage: 3.3v；
4) signal voltage: 5V TTL is acquired；
5) supply voltage: 5V；
6) interface defines: identical as 72 line number letter stencil made in Russia (1 foot, 72 foot is GND, and 36 foot, 37 foot is+5V, remaining is signal
Foot).
Digital playback signal adapter:
Playback test adapter is used to carry out the playback of digital signal, including carry out signal playback interface selection (power supply,
Ground or signal), identical as acquisition, host only exports the digital signal of Transistor-Transistor Logic level.Signal playback adapter structure is adapted to acquisition
Device is similar, but is not related to the playback of analog signal.It is identical as acquisition, when carrying out the playback of digital signal, because of switching electricity
Cable interface and unit under test Interface Shape are inconsistent, therefore also to play the role of interface by playback adapter, in utilization
It states private cable and connect host with playback adapter.But need to design impedance matching, light-coupled isolation electricity with acquisition adapter
Road is different, does not need to be isolated in playback, therefore signal playback adapter is exactly a kind of interface adapter, structure phase in fact
To simple.Same signal playback adapter needs to design 19 (analog interface does not need).Play back the board design of adapter
Layout is as shown in Figure 9.
Playback adapter mainly send playback signal to circuit board under test, to observe the response of circuit board.Adapter
Left side be digital playback signal area, which includes 96 railway digital signals.Wherein 72 railway digital partitioned signals have socket made in Russia,
Digital plate can be tested on socket.Other 24 road signal is as test point that is reserved, being reserved with oscillograph observation.Number
Word signal is essentially conducting wire connection, determines on-off by jumper cap.Upper left 5V power supply is used for digital plate power supply.Play back line
Cable also can provide 5V power supply, which comes from mainframe box, but does not use at present.The analog playback signal area at middle part is only used as pre-
It stays, DA plate, and the analog signal played back with oscillograph observation can be connected.
Right side is that collection of simulant signal is adapted to area, and can decay analog signal by a relatively large margin corresponding multiple, so as to AD plate
Acquisition.Playback adapter inner is integrated with the Switching Power Supply that 220V AC turns ± 5V DC, can power to attenuator circuit.
The major parameter for playing back adapter is as follows:
1) Alternating Current Power Supply: 220V@50-60HZ；
2) direct current supply: 5V-5A；(electric current is determined by digital plate to be measured)
3) playback interface: digital signal DB37；Analog signal SMA；
4) collection of simulant signal interface: SMA；
Upper computer software should have the characteristics that man-machine interface close friend, convenient for operating with, and function is mainly used for signal
Erasing, acquisition, pin setting, playback and the reading of data and write-back etc., be designed based on CPCI interface drive program,
Increase the control command to number and analog board and read data command, and according to certain sequential relationship by these order tissues
Together, the sophisticated functions such as reading, write-back, loop test, outer synchronous acquisition, the timing acquiring of data are realized.Software uses VC+
+ programming is realized.
Software is imported and export module, time and synchronous control by device driver module, interface and data resolution module, data
Molding block, stitch setup module, waveform are shown and signal edit module, database module composition.Structure is as shown in Figure 10.
Device drives: device drives are developed using WinDriver exploitation environment, realize the high-speed transfer of data.System
32,64 mainstream operation systems such as driver of uniting compatible WinXP, Win7.
Data import and export module: data import, and are to be deposited the data in computer sample database by write-in function
Store up test equipment.Data export is to be stored the instruction and data in test equipment to computer by specific read/write function
In.When computer receives data, software is read out and stores respectively operation using two threads, so as to continuous balanced reading number
According to.By being embedded in specific instruction, query function module and multi-thread mechanism in driver, realize that software and data acquire
Data between equipment are controllably transmitted.
Time and synchronization control module: it using acquisition or when importing and exporting data, can preset in software
Time after reaching preset time, is automatically closed acquisition operation or imports and exports operation and mention to control the size of storage file
High operating efficiency.Synchronization control module is used for using some stitch as the external synchronization signal of acquisition.For example, specific plug-in plate
" 2 " number foot starts to acquire after there is clock pulse, stops acquisition after reaching 50 lock-out pulses of setting.In this way, acquisition when
Length is tightly controlled, and the accuracy and validity of acquisition signal can be improved.
Stitch setup module: the module specifies input and output stitch to particular plug-in, by the number of these stitch when test
It is sent in bus, and this setting is saved in the database, called after convenient.Any one stitch can root in system
According to individually definition is needed, to improve the scalability and versatility of system application.In addition, the module also includes gain channel choosing
Configuration section is selected, user can set the gain shift in each channel, by corresponding gear selection relay before starting acquisition
Closure.The setting of tested board pin IO information and load interface are as shown in figure 11.
Before playback starts, need first to load the IO information of tested card, the mainly direction IO of card.Note that should
Interface I O directional information is had to consistent with tested card.Red identifies the output pin of corresponding circuit board under test, and green is corresponding
Input pin.
It needs to select the path of each board file when playback in pre-loaded data file to board, then clicks and " add
Carry data ", it can load in corresponding data file to board.After loaded, which can restore normal.Playback mode is divided to two
Kind, " starting playback " after selecting good model, is then clicked in single playback and continuous playback, and digiboard starts to play back.At this time may be used
Every road playback signal is observed, compared with oscillograph.
Analog board data waveform display interface is as shown in figure 12, and the analog board data of acquisition can be added by the interface
Display waveform is carried, convenient for analysis acquisition data.
0,5,10,15,20,25,30, the 35 of longitudinal axis scale are corresponding in turn to the position 0V of 1-8 channel analog signals, wave
Dynamic full range is ± 1 scale value, representative ± 1V；Horizontal axis scale represents sampled point, and every 0.1 scale value sampling is primary.
Digiboard data waveform display interface is as shown in figure 13, and the digiboard data of acquisition can be added by the interface
Display waveform is carried, convenient for analysis acquisition data.
Before loading data, filename is converted to and can be shown with the file of " original figure " by the advanced row data conversion of palpus
The wave file shown, in " acquisition playback " page.
Waveform is shown and signal edit module: the module has file conversion and compression function.When data export, receive
Raw data file be converted to wave file, so as to display waveform；When manual testing, the wave file editted can also be converted
For raw data file, to carry out importing and exporting operation.
Database module: the module is mainly used for storing the signal data file of tested parts, input and output setting text
Part and parts relevant information.
Newly-built card IO information bank interface is as shown in figure 14,, can for convenience of testing since tested card model is numerous
In advance to save the IO data input of these cards at file.IO title, direction and remarks letter can be set in the interface
Breath, can modify, saves and load.Red identifies the output pin of corresponding circuit board under test, and the corresponding input pin of green can be according to need
Want any modification.
Interface and data resolution module: all operations for interface equipment are all responsible for parsing and conversion, association by the module
Other modules are adjusted to operate equipment, it is centralized and unified, it maintains easily.
Claims (8)
1. a kind of guided missile signal environment simulation system, it is characterised in that: including signal acquisition adaptation, system host and digital signal
Adapter is played back, the system host includes mainframe box and digital signal environmental simulation card, simulation letter in mainframe box
Number acquisition storage card, digital signal storage playback card, bus module, controller and power module, the signal acquisition adapter
Signal input part receive change system send signal, the signal output end of the signal acquisition adapter respectively with the number
The connection of the signal input part of word signal environment analog card and collection of simulant signal storage card, the digital signal environmental simulation card
It is bi-directionally connected with collection of simulant signal storage card by bus module and the controller, the digital signal storage playback cartoon
It crosses the bus module to be bi-directionally connected with the controller, the signal output end and the number of the digital signal storage playback card
The signal input part of word signal playback adapter connects, and the output end of the digital playback signal adapter is the letter of the system
Number output end, the digital signal environmental simulation card, collection of simulant signal storage card and digital signal storage playback card are controlled
In the controller, for handling under the control of the controller data, the power module and the simulation are
The power input for the module for needing to power in system connects, for providing working power for it.
2. guided missile signal environment simulation system as described in claim 1, it is characterised in that: the digital signal environmental simulation card
Including the first external interface module, the first impedance matching unit, level conversion unit, the first data storage cell, the first control
Unit and the first bus unit, first external interface through first impedance matching unit respectively with the level conversion
Unit and the connection of the signal input part of first control unit, the level conversion unit are used to mention for the first control unit
For working power, the first via of the output end of the first control unit is through the first data storage interface unit and first number
It is connected according to storage unit, the second tunnel of the first control unit is connect with first bus unit.
3. guided missile signal environment simulation system as described in claim 1, it is characterised in that: the collection of simulant signal storage card
Including the second external interface module, the second impedance matching module, filter circuit module, ADC unit, the second control unit, storage
Module and the second bus unit, second external interface module is through second impedance matching module and the filter circuit
The signal input part of module connects, letter of the output end of the filter circuit module through operational amplifying module Yu the ADC unit
The connection of number input terminal, the output end of the ADC unit connects with the signal input part of the second control unit, and described second controls singly
The first via of the output end of member is connect through the second data storage interface unit with second data storage cell, second control
Second tunnel of unit processed is connect with second bus unit, and the control output end of second control unit and the ADC are mono-
The control terminal connection of member, for controlling its work.
4. guided missile signal environment simulation system as described in claim 1, it is characterised in that: signal acquisition adaptation includes the
The double needle socket of one 50pin, the double needle socket of the 2nd 50pin, 74 serial driving chips, 72 needle sockets and 72 pin plugs, institute
It states the double needle socket of the first 50pin and the 2nd double needle socket of 50pin to be bi-directionally connected with described 74 serial driving chips, described 74
Serial driving chip is connect through 72 needle socket with 72 pin plug.
5. guided missile signal environment simulation system as described in claim 1, it is characterised in that: the system host further includes man-machine
Interactive module, the human-computer interaction module are bi-directionally connected with the controller, for input control order and show the number of output
According to.
6. guided missile signal environment simulation system as claimed in claim 5, it is characterised in that: the human-computer interaction module include with
The touch screen that the controller is bi-directionally connected.
7. guided missile signal environment simulation system as claimed in claim 5, it is characterised in that: the human-computer interaction module include with
The key module of the signal input part connection of the controller and the display mould being connect with the signal output end of the controller
Block.
8. guided missile signal environment simulation system as described in claim 1, it is characterised in that: the system host further includes embedding
Extension host on cabinet.
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|---|---|---|---|
| CN201920656454.2U CN209560545U (en) | 2019-05-09 | 2019-05-09 | Guided missile signal environment simulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631972A (en) * | 2020-12-24 | 2021-04-09 | 济南浪潮高新科技投资发展有限公司 | Method and device for realizing device access |
| CN113342716A (en) * | 2021-06-15 | 2021-09-03 | 北京科汇天域科技有限公司 | Digital radio frequency storage hardware platform |
-
2019
- 2019-05-09 CN CN201920656454.2U patent/CN209560545U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631972A (en) * | 2020-12-24 | 2021-04-09 | 济南浪潮高新科技投资发展有限公司 | Method and device for realizing device access |
| CN113342716A (en) * | 2021-06-15 | 2021-09-03 | 北京科汇天域科技有限公司 | Digital radio frequency storage hardware platform |
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