CN108333566A - A kind of portable radar test system and test method based on ZYNQ - Google Patents
A kind of portable radar test system and test method based on ZYNQ Download PDFInfo
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- CN108333566A CN108333566A CN201810124036.9A CN201810124036A CN108333566A CN 108333566 A CN108333566 A CN 108333566A CN 201810124036 A CN201810124036 A CN 201810124036A CN 108333566 A CN108333566 A CN 108333566A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
A kind of portable radar test system and test method based on ZYNQ, are related to radar test field.The present invention is in order to which the real-time of the compatibility and Communication processing that solve the problems, such as existing Radar Measurement System is poor.Serial communication module, for receiving the GPS data that GPS device is sent out and the inertial guidance data that inertial navigation equipment is sent out, main control module is transmitted the data to, is additionally operable to send the A frame data that main control module is sent out to tested radar, and receive and be tested the B frame data that radar returns, data are reached into main control module；It is additionally operable to receive the recurrent pulse that main control module generates, and is sent to tested radar, receive and be tested the telemetry that radar returns；Main control module carries out solution and is counted as A frame data or simulation A frame data, send A frame data after the recurrent pulse of setting reaches, be additionally operable to generate recurrent pulse, be additionally operable to receive B frame data and telemetry respectively for receiving GPS data and inertial guidance data.It is used for radar test.
Description
Technical field
The present invention relates to a kind of portable radar test system and test method based on ZYNQ.Belong to radar test neck
Domain.
Background technology
The content and range of radar test are very extensive, and Radar Measurement System is developed so far, development course experienced from
Manual test, the universal test stage of automatic test till now, the design method of generalization module is increasingly becoming mainstream.
Radar real-time communication processing is to realize one of the important means of radar test, through radar from developing delivery
Using until it is final it is retired during the entire process of, be that radar ensures that design objective meets the requirements and use process in the design phase
The middle important means for carrying out working state monitoring, for ensuring the reasonability of Radar Design, ensureing radar and its place system
Function realization has great importance.
In order to meet serial communication, data calculation and the data storage requirement during radar test, Radar Measurement System
The design scheme of PXI embedded controller+FPGA boards is mostly used, as shown in Figure 1.
In Fig. 1, the serial data that FGPA boards are used to receive the serial data of inertial navigation and GPS and radar equipment is sent out,
Embedded controller is realized by PXI buses and is interacted with the communication of FPGA, and is resolved to data, storage processing.PXI cabinets
Bulkiness to be test make troubles, the real-time performance of simultaneous communications processing limited by the characteristic of Windows operating system and
It is difficult to further increase.
Invention content
The present invention is in order to which the real-time of the compatibility and Communication processing that solve the problems, such as existing Radar Measurement System is poor.
A kind of portable radar test system and test method based on ZYNQ are now provided.
A kind of portable radar based on ZYNQ tests system, it includes main control module and serial communication module,
Main control module using ZYNQ processing chips realize,
Serial communication module will for receiving the GPS data that GPS device is sent out and the inertial guidance data that inertial navigation equipment is sent out
The data transmission is additionally operable to send the A frame data that main control module is sent out to tested radar, and receive tested to main control module
The B frame data are reached main control module by the B frame data that radar returns；It is additionally operable to receive the period arteries and veins that main control module generates
The pulse is sent to tested radar, and receives and be tested the telemetry that radar returns by punching, is additionally operable to receive parameter initialization letter
Number parameter initialization is carried out to GPS device and inertial navigation equipment；
Main control module, for receiving GPS data and inertial guidance data, to the GPS data and inertial guidance data that receive respectively into
Row resolves composition A frame data or simulation A frame data, sends out the A frame data after the recurrent pulse of setting reaches
It goes, is additionally operable to generate recurrent pulse, be additionally operable to receive the B frame data and telemetry that serial communication module is sent out, to realize
To being tested the test of radar, it is additionally operable to serially communication module and sends parameter initialization signal.
A kind of portable radar test method based on ZYNQ, the method are applied under the pattern of laboratory, the method
It is that the portable radar based on ZYNQ tests the described method comprises the following steps for system realization according to a kind of：
Step 1: setting time thread and main thread in processing unit, secondary thread use real-time scheduling strategy, main thread to adopt
With non real-time scheduling strategy, it is first determined whether establish programmable logic cells and processing unit establish between communication link
It connects, if it is, step 2 is executed, if it is not, then executing step 4；
Step 2: PXI embedded controllers start processing unit, and the FIFO of programmable logic cells is reset, is executed
Step 3；
Step 3: judging whether to stop the communication connection between programmable logic cells and processing unit foundation manually, such as
Fruit is to then follow the steps four, if it is not, then executing step 5；
Step 4: closing the communication between programmable logic cells and processing unit foundation, recurrent pulse triggering is cancelled；
Step 5: processing unit setting recurrent pulse and simulation A frame data, judge whether send when recurrent pulse reaches
A frame data, if it is, step 6 is executed, if it is not, then executing step 7；
Step 6: transmitting A frame data to programmable logic cells, A frame data are sent to by synchronous RS485 communication modules
Tested radar, connects circuit by PCI Bridge and is transferred to PXI embedded controllers, and real-time display simultaneously stores A frame data, at this point, data pass
It passs and storing process is completed in the secondary thread of processor, in a dormant state, it is single that main thread then occupies processing to secondary thread after the completion
Elementary time piece completes interface parameter and refreshes display, executes step 7；
Step 7: judging whether programmable logic cells receive the B frame data of tested radar output, if it is, executing
Step 8, if it is not, then executing step 9；
Step 8: programmable logic cells receive B frame data, which by PCI Bridge connects circuit, and to be transferred to PXI embedded
Controller shows related data content and stores, at this point, B frame data transmit and storing process is completed in the secondary thread of processor,
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display secondary thread, executes after the completion
Step 9；
Step 9: judge whether processing unit receives whole data, if it is, step 4 is executed, if it is not, then
Execute step 3.
A kind of portable radar test method based on ZYNQ, the method are applied under outer field mode, and the method is
It is realized, be the described method comprises the following steps according to a kind of portable radar test system based on ZYNQ：
Setting time thread and main thread in step 1, processing unit, secondary thread use real-time scheduling strategy, main thread to adopt
With non real-time scheduling strategy, it is first determined whether establish programmable logic cells and processing unit establish between communication link
It connects, if so, 2 are thened follow the steps, if not, thening follow the steps 4；
Step 2 starts processing unit, and the FIFO of programmable logic cells is reset, and executes step 3；
Step 3 judges whether the manual communication connection stopped between programmable logic cells and processing unit foundation, if
It is to then follow the steps 4, if not, thening follow the steps 5；
Communication between step 4, closing programmable logic cells and processing unit foundation；
Step 5 judges whether programmable logic cells receive the inertial guidance data that inertial navigation equipment is sent out, if it is, holding
Row step 6, if not, thening follow the steps 7；
Step 6, programmable logic cells receive inertial guidance data and pass to processing unit, by processing unit completion resolving and more
New correlation global variable parameter, calls global variable result to generate A frame data, and carry out data storage, data transfer, resolve with
And storing process is completed in the secondary thread of processor, it is aobvious that main thread then occupies the completion interface parameter refreshing of processing unit timeslice
Show, executes step 8；
Step 7, secondary thread suspend mode execute step 10；
Step 8 judges whether programmable logic cells receive the GPS data that GPS device is sent out, if it is, executing
Step 9, if not, thening follow the steps 10；
Step 9, programmable logic cells receive the GPS data that GPS device is sent out, and complete to resolve, and update correlation is global to be become
Parameter is measured, and carries out data storage, data transfer, resolving, storing process are completed in the secondary thread of processor, after the completion secondary thread
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display, executes step 10；
Step 10 judges whether programmable logic cells receive the B frame data of tested radar output, if it is, executing
Step 11, if not, thening follow the steps 12；
Step 11, programmable logic cells receive B frame data, by the secondary thread of the data transfer to processing unit and deposit
Storage, in a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display secondary thread after the completion；
Step 12 judges whether processing unit receives whole data, if so, 4 are thened follow the steps, if it is not, then
Execute step 3.
Beneficial effects of the present invention are：
A kind of portable radar test system based on ZYNQ of the application gives full play to the framework advantage of ZYNQ chips,
The programmable logic cells of ZYNQ realize that serial communication logic, PXI bus communications logic and HDMI video signal export logic, place
Unit is managed for Peripheral Interfaces such as carry Micro USB, SD card, UART, Ethernet interfaces, and transplants built-in Linux operation system
System is run the application software developed based on Qt and realizes order control, and programmable logic cells and processing unit pass through AXI DMAIP
Core and customized AXI4 buses peripheral hardware carry out the communications of data and quantity of state.
There are two types of operating modes for the application tool, can both completely disengage cabinet, embedded controller autonomous working, well
Portability and real-time performance are taken into account；Chip is connect but also with PCI Bridge, PXI boards, cooperation PXI cabinets, embedded control can be used as
Device work processed, has two kinds of operating modes, substantially increases switching energy of the system under the two kinds of environment in laboratory and outer field mode
Power.
The application uses the modularized design of three level stack, three ply board card that can be individually replaced change according to design requirement
Into, cope with the different test requests of different radar models, be easy to the later stage upgrading, Function Extension.
The testing system software of the application needle is simultaneously using the Real-Time Scheduling Police of multithreading, to built-in Linux
EXT4 file system has carried out depth customization optimization, substantially increases the read-write efficiency of file I/O, and the system of the application can be
Realize that transmitting-receiving, resolving, storage and the display of multi-path serial data, the speed of service are fast in the 10ms periods；
The application realizes the file-sharing of built-in Linux and PC machine using network interface, can not be powered off in embedded system
In the case of realize the iteratively faster of software code, application program updated, greatly improve Embedded software development efficiency.
Description of the drawings
Fig. 1 is the principle schematic of existing Radar Measurement System；
Fig. 2 is a kind of principle signal of portable radar test system based on ZYNQ described in specific implementation mode one
Figure；
Fig. 3 is the structural schematic diagram of three pieces of boards；
Fig. 4 is real-time communication flow chart under the pattern of laboratory；
Fig. 5 is real-time communication flow chart under outer field mode；
Fig. 6 is a kind of portable radar test systematic difference software module division block diagram based on ZYNQ；
Fig. 7 is the network interface communication scheme serviced based on Samba.
Specific implementation mode
Specific implementation mode one：Present embodiment is illustrated with reference to Fig. 2, one kind described in present embodiment is based on ZYNQ
Portable radar test system, it includes main control module and serial communication module,
Main control module using ZYNQ processing chips realize,
Serial communication module will for receiving the GPS data that GPS device is sent out and the inertial guidance data that inertial navigation equipment is sent out
The data transmission is additionally operable to send the A frame data that main control module is sent out to tested radar, and receive tested to main control module
The B frame data are reached main control module by the B frame data that radar returns；It is additionally operable to receive the period arteries and veins that main control module generates
The pulse is sent to tested radar, and receives and be tested the telemetry that radar returns by punching, is additionally operable to receive parameter initialization letter
Number parameter initialization is carried out to GPS device and inertial navigation equipment；
Main control module, for receiving GPS data and inertial guidance data, to the GPS data and inertial guidance data that receive respectively into
Row resolves composition A frame data or simulation A frame data, sends out the A frame data after the recurrent pulse of setting reaches
It goes, is additionally operable to generate recurrent pulse, be additionally operable to receive the B frame data and telemetry that serial communication module is sent out, to realize
To being tested the test of radar, it is additionally operable to serially communication module and sends parameter initialization signal.
In present embodiment, setting PCI Bridge connects circuit in the serial communication module of the application, and PCI Bridge connects circuit for connecting
Connect PXI cabinets, simulation laboratory's test and debugging environment；When being not connected to PXI cabinets, the application is applied to field testing and debugs ring
Border.
The main control module of the application includes programmable logic cells and processing unit, and programmable logic cells are realized serial logical
Interrogate logic, PXI bus communications logic and HDMI peripheral hardware control logics, processing unit pendant carry Micro USB, SD card, UART,
The Peripheral Interfaces such as Ethernet interface, and the application software under built-in Linux is run, it can realize autonomous working, programmable logic
The communication for carrying out data and quantity of state between unit and processing unit by AXI DMAIP cores and customized AXI4 buses peripheral hardware passes
It is defeated, realize that the order to data transmit-receive, resolving, storage, display controls；Serial communication module on the one hand realize and inertial navigation, GPS and
The serial communication interface of radar equipment accomplishes all standing of hardware interface type and communication protocol, and can be according to debugging efforts
Actual conditions carry out control switching, be on the other hand loaded with PCI Bridge and connect chip, so that test system is can be used as PXI boards, match
PXI cabinets, embedded controller work are closed, to have two kinds of operating modes；Functional interface module includes mainly Micro
The function and configurations interface such as USB, Ethernet, UART, HDMI is the test and debugging of the peripheral hardwares such as key mouse, display and system
Necessary interface is provided.
Application software carries out exploitation design based on Qt, and main control module is from level from being driving layer, functional layer down to high score
And application layer, and include multiple modules in every layer, in application layer in testing system software design the division of module mainly to survey
Test system function is foundation, as shown in Figure 6.
(1) layer Software for Design is driven
In this application, driving layer software is mainly by the driving of AXI_DMA IP kernels and the self-defined peripheral hardware driving of AXI4 buses etc.
Composition, groundwork flow are：It opens device file-and operation-pass hull closure file is written and read to device file.
(2) functional layer Software for Design
Functional layer software is the bridge of connection driving layer and application layer, the function pair that this layer of software is realized according to test software
Driving layer software is packaged, while carrying out module division in inside according to functional category.Due to the presence of functional layer, work as bottom
When hardware device is replaced, only need to replace driving layer in software aspects, and without to top layer application layer software
Modification, improves the versatility of system software.
In this application, functional layer software is single by programmable logic cells register read-write cell, synchronous RS485 communications
Member, telemetering RS422 communication units, asynchronous RS422 communication units and asynchronous RS232 units composition.To saying for each functional unit
It is bright as follows：
1) programmable logic cells register read-write cell
The module mainly completes the read-write to programmable logic cells register, realizes monitoring, communication to communication state
The functions such as the setting of parameter, the switching of communications protocol.
2) synchronous RS485 communication units
The module according to RS485 communications protocol by synchronous RS485 communication modules and tested radar communication, to the number received
According to frame parsing tear open, programmable logic cells are sent to the data framing configured.
3) telemetering RS422 communication units
The module sends the control of pulse performance period, receives telemetering graph data and parses.
4) asynchronous RS422 communication units
The module is communicated according to asynchronous RS422 communications protocol by asynchronous RS422 communication modules and inertial navigation equipment, to receiving
To inertial guidance data tear frame parsing open, and by data for resolving.
5) asynchronous RS232 communication units
The module is communicated according to asynchronous RS232 communications protocol by asynchronous RS232 communication modules and GPS device, to receiving
To GPS data tear frame parsing open, and by data for resolving.
(3) application layer software designs
In this application, application layer software is divided into authority management module, systematic parameter configuration module, test module, instrument
Equipment selecting module, document management module.Authority management module is divided into manages mould for login password management module and personnel equipment
Block realizes the management to login password password, system operators and facility information respectively；Systematic parameter configuration module is main
Realize the configuration to communications parameter, the setting etc. of store path；Test module is divided into test parameter configuration module, at real-time communication
Manage module and telemeter communication module, wherein test parameter configuration management module mainly realizes the ginseng to synchronous RS485 agreement A frames
Number setting, real-time communication processing module are realized logical with serial communication module and functional interface module according to command instruction
News；Telemeter communication module is then used for tested radar sending cycle pulse, and is received and be tested the telemetering picture number that radar return comes
According to instrument and equipment selecting module realizes the switching to serial communication protocol mainly under different GPS inertial navigation equipments；File
Management module is divided into data readback module and data graphics module, and data readback module can transfer back the data of storage
It puts, map data module is responsible for telemetering image data being converted into the output of telemetering image information.
Specific implementation mode two：Present embodiment is illustrated with reference to Fig. 2, present embodiment is to specific implementation mode one
A kind of portable radar test system based on ZYNQ is described further, and in present embodiment, main control module includes
Programmable logic cells and processing unit, serial communication module include asynchronous RS422 communication modules, asynchronous RS232 communication modules,
Synchronous RS485 communication modules and asynchronous telemetering RS422 communication modules,
Programmable logic cells are communicated with processing unit by AXI4 buses,
Programmable logic cells initialize inertial navigation equipment by asynchronous RS422 communication modules, programmable logic list
Member initializes GPS device by asynchronous RS232 communication modules,
Programmable logic cells lead to for receiving the inertial guidance data that inertial navigation equipment is sent by asynchronous RS422 communication modules
It crosses asynchronous RS232 communication modules and receives the GPS data that GPS device is sent, the inertial guidance data and GPS data are sent to place
Unit is managed, A frame data are sent to tested radar by synchronous RS485 communication modules and receives B frame data, and B frame data are sent out
Processing unit is given, is additionally operable to generate period commutator pulse, which is sent by asynchronous telemetering RS422 communication modules
It to tested radar, and receives and is tested the telemetry that radar returns, to realize the test to being tested radar；
Processing unit, for receiving inertial guidance data and GPS data respectively carry out resolve composition A frame data, setting
The A frame data are transferred to programmable logic cells after fixed recurrent pulse arrival, are additionally operable to control programmable logic list
Member generates period commutator pulse.
Specific implementation mode three：Present embodiment is illustrated with reference to Fig. 2, present embodiment is to specific implementation mode two
A kind of portable radar test system based on ZYNQ is described further, and in present embodiment, it further includes function
Interface module, functional interface module include HDMI interface, SD card slot, USB interface, UART interface and Ethernet interface,
Programmable logic cells are communicated by HDMI interface and display,
Processing unit by SD card slot, USB interface, UART interface and Ethernet interface respectively with SD card, mouse, keyboard and
Network interface connection, mouse and keyboard are stored for software interface instruction control, SD card for data, and network interface is used for data transmission.
Specific implementation mode four：Present embodiment is illustrated with reference to Fig. 2, present embodiment is to specific implementation mode one
A kind of portable radar test system based on ZYNQ is described further, in present embodiment, serial communication module
Circuit and synchronous RS485 communication modules are connect including PCI Bridge, main control module connects circuit by PCI Bridge and connects PXI cabinets,
Main control module includes programmable logic cells and processing unit,
Processing unit carries out resolving composition A frames for the data to the data, GPS device that receive inertial navigation equipment respectively
The A frame data are sent to programmable logic cells by data or simulation A frame data, are additionally operable to control programmable logic
Unit generates period commutator pulse；
Programmable logic cells pass through A frame data after the recurrent pulse for reaching setting same for receiving A frame data
Step RS485 communication modules are sent to tested radar, and tested radar returns out B frame data by synchronous RS485 communication modules, also uses
In generating recurrent pulse, which is sent to tested radar by asynchronous telemetering RS422 communication modules, and receive tested
The telemetry that radar returns, to realize the test to being tested radar；
Programmable logic cells connect circuit by PCI Bridge and connect PXI cabinets, and PXI embedded Controls are provided in PXI cabinets
Device, PCI Bridge connect circuit connection PXI cabinets for data storage and interface display.
Specific implementation mode five：Present embodiment is illustrated with reference to Fig. 7, present embodiment is to specific implementation mode three
A kind of portable radar test system based on ZYNQ is described further, and in present embodiment, is taken in processing unit
Samba servers are had, create Shared Folders on that server, computer terminal is accessed by network interface on Samba servers
Shared Folders, realize to the update iteration of code, application program.
In present embodiment, the storage medium of embedded system is usually single, except the executable file of storage application program
Outside, every required file that also storage Linux starts, therefore in more fresh code and application program, it is necessary to just by system cut-off
The update of code can be executed.This test system realizes the communication of PC machine and embedded system by Ethernet interface, is taken using Samba
Business structure file-sharing service, Samba servers are built on embedded platform and create Shared Folders, are passed through at the ends PC specific
IP i.e. may have access to specified folder, can be realized in the case where embedded system does not power off to code, application program it is quick
Iteration is updated, the efficiency of embedded development is substantially increased.Network interface communication scheme based on Samba services is as shown with 7.
Specific implementation mode six：Present embodiment is illustrated with reference to Fig. 3, present embodiment is to specific implementation mode three
A kind of portable radar test system based on ZYNQ is described further, and in present embodiment, it further includes core
Master control borad, functional interface plate and serial communication plate, core master control borad, functional interface plate and serial communication plate pass through mother daughter board connector
It is stacked, is fixed with bolt between every adjacent two boards, main control module is arranged on core master control borad, and function setting exists
On interface module functional interface plate, serial communication module is arranged on serial communication plate.
In present embodiment, Radar Measurement System uses ZYNQ cores master control borad+functional interface plate+three layers of serial communication plate
The hardware configuration of stacking realizes that the global design of system board, structural schematic diagram are as shown in Figure 3.Due to the connection of mother daughter board connector
Limited mechanical strength fixes the board of adjacent installation by bolt to ensure the reliability connected between board two-by-two.Three
Block board can be individually replaced improvement according to the continuous variation of subsequent need, cope with the different tests of different radar models
It is required that improving the compatibility and versatility of test system.
Specific implementation mode seven：Present embodiment is illustrated with reference to Fig. 4, one kind described in present embodiment is based on ZYNQ
Portable radar test method, the method be applied to laboratory pattern under, using PCI Bridge connect circuit connect PXI cabinets, by
PXI embedded controllers realize upper computer software function, realize that control of the user to transmitting-receiving flow, the method are according to specific
What a kind of portable radar test system based on ZYNQ described in embodiment four was realized, which is characterized in that the method packet
Include following steps：
Step 1: setting time thread and main thread in processing unit, secondary thread use real-time scheduling strategy, main thread to adopt
With non real-time scheduling strategy, it is first determined whether establish programmable logic cells and processing unit establish between communication link
It connects, if it is, step 2 is executed, if it is not, then executing step 4；
Step 2: PXI embedded controllers start processing unit, and the FIFO of programmable logic cells is reset, is executed
Step 3；
Step 3: judging whether to stop the communication connection between programmable logic cells and processing unit foundation manually, such as
Fruit is to then follow the steps four, if it is not, then executing step 5；
Step 4: closing the communication between programmable logic cells and processing unit foundation, recurrent pulse triggering is cancelled；
Step 5: processing unit setting recurrent pulse and simulation A frame data, judge whether send when recurrent pulse reaches
A frame data, if it is, step 6 is executed, if it is not, then executing step 7；
Step 6: transmitting A frame data to programmable logic cells, A frame data are sent to by synchronous RS485 communication modules
Tested radar, connects circuit by PCI Bridge and is transferred to PXI embedded controllers, and real-time display simultaneously stores A frame data, at this point, data pass
It passs and storing process is completed in the secondary thread of processor, in a dormant state, it is single that main thread then occupies processing to secondary thread after the completion
Elementary time piece completes interface parameter and refreshes display, executes step 7；
Step 7: judging whether programmable logic cells receive the B frame data of tested radar output, if it is, executing
Step 8, if it is not, then executing step 9；
Step 8: programmable logic cells receive B frame data, which by PCI Bridge connects circuit, and to be transferred to PXI embedded
Controller shows related data content and stores, at this point, B frame data transmit and storing process is completed in the secondary thread of processor,
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display secondary thread, executes after the completion
Step 9；
Step 9: judge whether processing unit receives whole data, if it is, step 4 is executed, if it is not, then
Execute step 3.
Specific implementation mode eight：Present embodiment is illustrated with reference to Fig. 5, one kind described in present embodiment is based on ZYNQ
Portable radar test method, the method be applied to outer field mode under, by processing unit run built-in Linux under answering
With software, realize user to receiving and dispatching the control of flow, the method be it is according to claim 2 it is a kind of based on ZYNQ just
Take the realization of formula Radar Measurement System, which is characterized in that the described method comprises the following steps：
Setting time thread and main thread in step 1, processing unit, secondary thread use real-time scheduling strategy, main thread to adopt
With non real-time scheduling strategy, it is first determined whether establish programmable logic cells and processing unit establish between communication link
It connects, if so, 2 are thened follow the steps, if not, thening follow the steps 4；
Step 2 starts processing unit, and the FIFO of programmable logic cells is reset, and executes step 3；
Step 3 judges whether the manual communication connection stopped between programmable logic cells and processing unit foundation, if
It is to then follow the steps 4, if not, thening follow the steps 5；
Communication between step 4, closing programmable logic cells and processing unit foundation；
Step 5 judges whether programmable logic cells receive the inertial guidance data that inertial navigation equipment is sent out, if it is, holding
Row step 6, if not, thening follow the steps 7；
Step 6, programmable logic cells receive inertial guidance data and pass to processing unit, by processing unit completion resolving and more
New correlation global variable parameter, calls global variable result to generate A frame data, and carry out data storage, data transfer, resolve with
And storing process is completed in the secondary thread of processor, it is aobvious that main thread then occupies the completion interface parameter refreshing of processing unit timeslice
Show, executes step 8；
Step 7, secondary thread suspend mode execute step 10；Step 8 judges whether programmable logic cells receive GPS device
The GPS data sent out, if so, 9 are thened follow the steps, if not, thening follow the steps 10；
Step 9, programmable logic cells receive the GPS data that GPS device is sent out, and complete to resolve, and update correlation is global to be become
Parameter is measured, and carries out data storage, data transfer, resolving, storing process are completed in the secondary thread of processor, after the completion secondary thread
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display, executes step 10；
Step 10 judges whether programmable logic cells receive the B frame data of tested radar output, if it is, executing
Step 11, if not, thening follow the steps 12；
Step 11, programmable logic cells receive B frame data, by the secondary thread of the data transfer to processing unit and deposit
Storage, in a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display secondary thread after the completion；
Step 12 judges whether processing unit receives whole data, if so, 4 are thened follow the steps, if it is not, then
Execute step 3.
In present embodiment, in real-time communication processing function and telemeter communication function, software is real-time using multithreading
Scheduling strategy technology, and for the customization optimization of EXT4 file system depth, ensured and realized under Linux time sharing operating systems
The technical requirement of real-time communication, resolving, storage, display in 10ms communication cycles makes system have extremely strong soft real-time.
1) multithreading：When executing above-mentioned two function, software opens multithreading, and the display at interface is refreshed and operated
Response is run in main thread, and the time-consuming processing such as data transmit-receive, resolving and storage is executed in secondary thread, is not only able to protect
The prolonged normal response for taking processing and not interfering with application program of card, and the double-core arm processor in ZYNQ can obtain
To the utilization rate of bigger.
2) Real-Time Scheduling Police：There are three types of the thread scheduling policies of Linux：SCHED_OTHER, SCHED_FIFO,
SCHED_RR.SCHED_OTHER is a kind of thread acquiescence, non real-time scheduling strategy, when there are Real-Time Scheduling plans in system
When the thread omited, CPU time slice can be seized by real-time thread at once, and non-real-time threads are only finished in all real-time threads
Or it can just be executed when actively abandoning timeslice.SCHED_FIFO, SCHED_RR are real-time scheduling strategies, when starting execution
The CPU time slice of timesharing thread can be seized at once.Configure main thread to the non real-time scheduling strategy of acquiescence, secondary thread uses
Real-Time Scheduling Police can ensure that time thread can obtain real-time priority processing power, meet real-time communication need；Secondary thread
Suspend mode under certain condition is actively abandoned occupying CPU, and main thread can be in the case where secondary thread handle in real time
CPU is occupied, the display and response at interface are similarly obtained guarantee.
3) file system depth customization optimization：The relevant parameter configuration of the performance and file system of magnetic disc i/o often limits
The bottleneck of system running speed processed.In this test system, the data of storage are put in SD card, and SD card is TOSHIBA companies UHS-
The SD card of II speed class, it is per second that its theoretical read or write speed can reach 260/240MB, therefore is embodied on a storage medium
Performance bottleneck there's almost no.File system is to limit another bottleneck of the real-time read and write rate of file, EXT4 file system
Default parameters configuration ensure that universal applicability, and when executing write-in file manipulation command, file system will will not count at once
It according to write-in storage medium, but is written in due course according to cache policy, therefore can cause a certain moment that mass data is written to SD card
The case where, cause system the delay interim card of 10ms or more occur, the real-time of Communication processing is affected.For real-time storage
It is required that the present invention to file system depth optimization, changes the parameters such as file cache strategy, cancel daily record write-in functions, with into one
Step improves I/O performances.By actual functional test, receiving and dispatching can be in the communication of 10ms to data progress real-time storage in flow
It is completed in period, avoids data redundancy caused by write-in not in time.
The real-time communication process flow under laboratory, two kinds of outfield application scenarios is set forth in Fig. 4 and Fig. 5.Laboratory
Under pattern, portable general TT＆C system realizes that the period timing of A frames is sent out by the 10ms period commutator pulses at the ends poll PL
It send；Under outer field mode, with the communication cycle of equipment under test then on the basis of the communication cycle of inertial navigation, when inertial guidance data come it is interim,
Inertial guidance data is received and is resolved, then framing sends A frame data.In two patterns, secondary thread is transmitted to main thread
After related data, the thread suspend mode of 500-1000us can be actively carried out, CPU time slice is conceded to main thread, main thread
The update for executing interface data during this period is shown.After receiving and dispatching flow, by data from caching forced synchronism to
In storage device, otherwise accident power-off may result in data portion loss.Telemeter communication function is in flow and the mould of laboratory
Real-time communication processing function under formula is similar, sends pulse to equipment under test by PL timings, and receive the telemetry of return.
Claims (8)
1. a kind of portable radar based on ZYNQ tests system, which is characterized in that it includes main control module and serial communication mould
Block,
Main control module using ZYNQ processing chips realize,
Serial communication module will be described for receiving the GPS data that GPS device is sent out and the inertial guidance data that inertial navigation equipment is sent out
Data transmission is additionally operable to send the A frame data that main control module is sent out to tested radar, and receive and be tested radar to main control module
The B frame data are reached main control module by the B frame data of return；It is additionally operable to receive the recurrent pulse that main control module generates, it will
The pulse is sent to tested radar, and receives and be tested the telemetry that radar returns, and is additionally operable to receive parameter initialization signal pair
GPS device and inertial navigation equipment carry out parameter initialization；
Main control module solves the GPS data and inertial guidance data that receive for receiving GPS data and inertial guidance data respectively
Composition A frame data or simulation A frame data are calculated, are sent the A frame data after the recurrent pulse of setting reaches, also
For generating recurrent pulse, it is additionally operable to receive the B frame data and telemetry that serial communication module is sent out, to realize to tested
The test of radar is additionally operable to serially communication module and sends parameter initialization signal.
2. a kind of portable radar based on ZYNQ tests system according to claim 1, which is characterized in that
Main control module includes programmable logic cells and processing unit, and serial communication module includes asynchronous RS422 communication modules, different
RS232 communication modules, synchronous RS485 communication modules and asynchronous telemetering RS422 communication modules are walked,
Programmable logic cells are communicated with processing unit by AXI4 buses,
Programmable logic cells initialize inertial navigation equipment by asynchronous RS422 communication modules, and programmable logic cells are logical
Asynchronous RS232 communication modules are crossed to initialize GPS device,
Programmable logic cells, for receiving the inertial guidance data that inertial navigation equipment is sent by asynchronous RS422 communication modules, by different
It walks RS232 communication modules and receives the GPS data that GPS device is sent, it is single that the inertial guidance data and GPS data are sent to processing
Member sends A frame data to tested radar by synchronous RS485 communication modules and receives B frame data, and B frame data are sent to
Processing unit, be additionally operable to generate period commutator pulse, by the recurrent pulse by asynchronous telemetering RS422 communication modules be sent to by
Radar is surveyed, and receives and is tested the telemetry that radar returns, to realize the test to being tested radar；
Processing unit, for receiving inertial guidance data and GPS data respectively carry out resolve composition A frame data, in setting
The A frame data are transferred to programmable logic cells after recurrent pulse arrival, are additionally operable to control programmable logic cells production
Raw period commutator pulse.
3. a kind of portable radar based on ZYNQ tests system according to claim 2, which is characterized in that it further includes work(
Can interface module, functional interface module includes HDMI interface, SD card slot, USB interface, UART interface and Ethernet interface,
Programmable logic cells are communicated by HDMI interface and display,
Processing unit by SD card slot, USB interface, UART interface and Ethernet interface respectively with SD card, mouse, keyboard and network interface
Connection, mouse and keyboard are stored for software interface instruction control, SD card for data, and network interface is used for data transmission.
4. a kind of portable radar based on ZYNQ tests system according to claim 1, which is characterized in that serial communication mould
Block includes that PCI Bridge connects circuit and synchronous RS485 communication modules, and main control module connects circuit by PCI Bridge and connects PXI cabinets,
Main control module includes programmable logic cells and processing unit,
Processing unit carries out resolving composition A frame data for the data to the data, GPS device that receive inertial navigation equipment respectively
Or simulation A frame data, the A frame data are sent to programmable logic cells, are additionally operable to control programmable logic cells
Generate period commutator pulse；
A frame data are passed through synchronization by programmable logic cells for receiving A frame data after the recurrent pulse for reaching setting
RS485 communication modules are sent to tested radar, and tested radar returns out B frame data by synchronous RS485 communication modules, is additionally operable to
Recurrent pulse is generated, which is sent to tested radar by asynchronous telemetering RS422 communication modules, and receive and be tested thunder
Up to the telemetry of return, to realize the test to being tested radar；
Programmable logic cells connect circuit by PCI Bridge and connect PXI cabinets, and PXI embedded controllers are provided in PXI cabinets,
PCI Bridge connects circuit connection PXI cabinets for data storage and interface display.
5. a kind of portable radar based on ZYNQ tests system according to claim 3, which is characterized in that in processing unit
Samba servers have been built, have created Shared Folders on that server, computer terminal accesses Samba servers by network interface
On Shared Folders, realize to the update iteration of code, application program.
6. a kind of portable radar based on ZYNQ tests system according to claim 3, which is characterized in that it further includes core
Heart master control borad, functional interface plate and serial communication plate, core master control borad, functional interface plate and serial communication plate between plate by connecting
Device is stacked, and is fixed with bolt between every adjacent two boards, main control module is arranged on core master control borad, function setting
On interface module functional interface plate, serial communication module is arranged on serial communication plate.
7. a kind of portable radar test method based on ZYNQ, the method is applied under the pattern of laboratory, and the method is
What a kind of portable radar test system based on ZYNQ according to claim 4 was realized, which is characterized in that the method
Include the following steps：
Step 1: setting time thread and main thread in processing unit, secondary thread uses real-time scheduling strategy, and main thread is using non-
Real-time scheduling strategy, it is first determined whether establishing the communication connection between programmable logic cells and processing unit foundation, such as
Fruit is to then follow the steps two, if it is not, then executing step 4；
Step 2: PXI embedded controllers start processing unit, and the FIFO of programmable logic cells is reset, executes step
Three；
Step 3: judge whether to stop the communication connection between programmable logic cells and processing unit foundation manually, if so,
Four are thened follow the steps, if it is not, then executing step 5；
Step 4: closing the communication between programmable logic cells and processing unit foundation, recurrent pulse triggering is cancelled；
Step 5: processing unit setting recurrent pulse and simulation A frame data, judge whether send A frames when recurrent pulse reaches
Data, if it is, step 6 is executed, if it is not, then executing step 7；
Step 6: transmitting A frame data to programmable logic cells, A frame data are sent to tested by synchronous RS485 communication modules
Radar connects circuit by PCI Bridge and is transferred to PXI embedded controllers, and real-time display simultaneously stores A frame data, at this point, data transfer and
Storing process processor secondary thread complete, after the completion secondary thread in a dormant state, when main thread then occupies processing unit
Between piece complete interface parameter refresh display, execute step 7；
Step 7: judging whether programmable logic cells receive the B frame data of tested radar output, if so, thening follow the steps
Eight, if it is not, then executing step 9；
Step 8: programmable logic cells receive B frame data, which connects circuit by PCI Bridge and is transferred to PXI embedded Controls
Device shows related data content and stores, at this point, B frame data transmit and storing process is completed in the secondary thread of processor, completes
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display secondary thread, executes step afterwards
Nine；
Step 9: judging whether processing unit receives whole data, if it is, step 4 is executed, if it is not, then executing
Step 3.
8. a kind of portable radar test method based on ZYNQ, the method is applied under outer field mode, and the method is root
It is realized according to a kind of portable radar test system based on ZYNQ described in claim 2, which is characterized in that the method packet
Include following steps：
Setting time thread and main thread in step 1, processing unit, secondary thread use real-time scheduling strategy, and main thread is using non-
Real-time scheduling strategy, it is first determined whether establishing the communication connection between programmable logic cells and processing unit foundation, such as
Fruit is to then follow the steps 2, if not, thening follow the steps 4；
Step 2 starts processing unit, and the FIFO of programmable logic cells is reset, and executes step 3；
Step 3 judges whether the manual communication connection stopped between programmable logic cells and processing unit foundation, if so,
4 are thened follow the steps, if not, thening follow the steps 5；
Communication between step 4, closing programmable logic cells and processing unit foundation；
Step 5 judges whether programmable logic cells receive the inertial guidance data that inertial navigation equipment is sent out, if it is, executing step
Rapid 6, if not, thening follow the steps 7；
Step 6, programmable logic cells receive inertial guidance data and pass to processing unit, and resolving and more cenotype are completed by processing unit
Global variable parameter is closed, calls global variable result to generate A frame data, and carry out data storage, data transfer is resolved and deposited
Storage process is completed in the secondary thread of processor, and main thread then occupies processing unit timeslice and completes interface parameter refreshing display, holds
Row step 8；
Step 7, secondary thread suspend mode execute step 10；
Step 8 judges whether programmable logic cells receive the GPS data that GPS device is sent out, if so, thening follow the steps
9, if not, thening follow the steps 10；
Step 9, programmable logic cells receive the GPS data that GPS device is sent out, and complete to resolve, and update related global variable ginseng
Number, and data storage is carried out, data transfer, resolving, storing process are completed in the secondary thread of processor, and secondary thread is in after the completion
Dormant state, main thread then occupy processing unit timeslice and complete interface parameter refreshing display, execute step 10；
Step 10 judges whether programmable logic cells receive the B frame data of tested radar output, if so, thening follow the steps
11, if not, thening follow the steps 12；
Step 11, programmable logic cells receive B frame data, by the secondary thread of the data transfer to processing unit and store, complete
In a dormant state, main thread then occupies processing unit timeslice and completes interface parameter refreshing display Cheng Houci threads；
Step 12 judges whether processing unit receives whole data, if so, 4 are thened follow the steps, if it is not, then executing
Step 3.
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