CN106647495A - Ultra-high-frequency range finder control system and realization method thereof - Google Patents
Ultra-high-frequency range finder control system and realization method thereof Download PDFInfo
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- CN106647495A CN106647495A CN201611207921.0A CN201611207921A CN106647495A CN 106647495 A CN106647495 A CN 106647495A CN 201611207921 A CN201611207921 A CN 201611207921A CN 106647495 A CN106647495 A CN 106647495A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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Abstract
The invention discloses an ultra-high-frequency range finder control system and a realization method thereof. A system circuit comprises a Cortex-A8 ARM (Advanced RISC Machines) main control chip, a capacitive touch screen, a network interface card chip, an FRAM (Failure Rate Assessment Machine) memory, a 4*4 matrix keyboard and a 3.3V button battery; the whole system circuit is redesigned and a hardware circuit has a small size, light weight, great functions and a high anti-interference function; and a Linux operating system is constructed by a software design, and 1GHz main frequency of an industrial 4-core CPU (Central Processing Unit) enables the system to have short response time and high stability and functions are more easy to expand, so that the requirements on distance measuring equipment, namely a VOR (Very-high-frequency Omnidirectional Range) platform, are met. After the ultra-high-frequency range finder control system is successfully researched, the production cost is reduced to be one half of previous cost; functions are more complete and the ultra-high-frequency range finder control system is easy to debug, produce and repair; and relatively good technical and economic benefits are obtained. The novel ultra-high-frequency range finder control system can work stably and has reliable performances.
Description
Technical field
The present invention relates to it is applied to the airmanship of DME ground installations, more particularly to a kind of hyperfrequency rangefinder control system
System and its implementation.
Background technology
The control circuit of traditional hyperfrequency rangefinder control system generally adopts DSP+FPGA frameworks, externally only
RS232 serial ports and GPIO communicate, and software is entirely bare machine code, and Function Extension is difficult；Man-machine interface only has one block of 5.7 cun of liquid crystal
Screen and control button, significantly limit secondary development and the customizing functions of product.In view of the deficiency of existing product design, system sound
Long, high cost, job insecurity, performance are unreliable between seasonable, it is impossible to the demand of increasingly harsh performance indications is met, while depositing
In the problem that can not be minimized；How to solve this problem just becomes those skilled in the art's class to be studied and be solved
Topic.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, i.e., for existing product high cost, volume be big, system
The problems such as client modules interface such as response time length and remote control is inconsistent, especially provides a kind of novel ultra-high frequency rangefinder
Control system and implementation method.The rangefinder works in L-band, and 962～1213MHz of frequency range is together with airborne equipment
Aircraft provides its oblique distance information between earth station.Rangefinder terrestrial platform can be with instrument-landing-system（ILS）It is used in combination,
Oblique distance information during landing is provided for aircraft, also can be with nodirectional beacon（DVOR）It is used in combination, provides on air route for aircraft
Range information.
The present invention is adopted the technical scheme that for achieving the above object：A kind of hyperfrequency rangefinder control system, it is special
Levy and be：The circuit system include Cortex-A9 ARM main control chips, capacitance touch screen, network card chip, FRAM memory,
4*4 matrix keyboards and 3.3V button cells；The MAC mouths of described Cortex-A9 ARM main control chips are connected with network card chip, net
The core of the card piece connects respectively clock source and status lamp, and network card chip is connected with network isolation transformer again, and network isolation transformer leads to
Cross RJ45 connection Ethernets；The UART mouths of Cortex-A9 ARM master control cores are connected with GPS, Cortex-A9 ARM master control cores
LVDS mouths are connected with capacitance touch screen, and the IIC mouths of Cortex-A9 ARM main control chips are connected with FRAM memory, Cortex-A9
The GPIO mouths of ARM main control chips are connected with 4*4 matrix keyboards, the RTC mouths connection 3.3V buttons of Cortex-A9 ARM main control chips
Battery, the CAN mouths of Cortex-A9 ARM main control chips connect monitor, Receiver And Transmitter by CAN.
System of the present invention adopts NXP chip i.MX6Q hardware platforms, builds built-in Linux operating system；Software
Developed using the CodeBlocks software cross pattern compilers under (SuSE) Linux OS；Control software is by application program, text
Part system, kernel program, four layers of composition of startup program, its logic control has following steps：
（One）, system electrification, load startup program；
（Two）, start kernel；
（Three）, load document system；
（Four）, application program is according to the Shell pin in the rc.local files write in advance under system directory/etc/init.d/
This order runs, and respectively enters server processes, system control program process and AD collection conversion process；
（Five）, into after server processes, respectively enter server receive and send thread；Into after system control program process
Respectively enter CAN receiving or sending threads, serial ports receiving or sending thread, network interface receiving or sending thread and IO control thread；Conversion process is gathered into AD
After respectively enter AD sampling and process thread.
The invention has the advantages that：By carrying out whole redesigns, hardware circuit volume to circuit system
Little, lightweight, powerful, strong antijamming capability, Software for Design constructs (SuSE) Linux OS, the core CPU's of technical grade 4
1GHz dominant frequency causes system response time short, and stability is high, and Function Extension is more prone to, so as to meet distance-measuring equipment VOR platform
Demand.After the hyperfrequency rangefinder controlling system design success so that production cost is reduced to original 1/2nd, and function is more
Plus it is perfect, it is easy to debug, produce and keep in repair, achieve preferable technical benefits and economic benefit.The novel ultra-high frequency rangefinder
Control system working stability, dependable performance.
Description of the drawings
Fig. 1 is the system connection block diagram of the present invention；
Fig. 2 is the logic control general flow chart of the present invention；
Fig. 3 is that server receives and send the flow chart of thread in Fig. 2；
Fig. 4 is the flow chart of CAN receiving or sending threads in Fig. 2；
Fig. 5 is the flow chart of serial ports receiving or sending thread in Fig. 2；
Fig. 6 is the flow chart of network interface receiving or sending thread in Fig. 2；
Fig. 7 is the flow chart that IO controls thread in Fig. 2；
Fig. 8 is AD samplings and process thread flow figure in Fig. 2.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described：
As shown in figure 1, the system circuit includes that Cortex-A9 ARM main control chips, capacitance touch screen, network card chip, FRAM are deposited
Reservoir, 4*4 matrix keyboards and 3.3V button cells；The MAC mouths of Cortex-A9 ARM main control chips are connected with network card chip, net
The core of the card piece connects respectively clock source and status lamp, and network card chip is connected with network isolation transformer again, and network isolation transformer leads to
Cross RJ45 connection Ethernets；The UART mouths of Cortex-A9 ARM master control cores are connected with GPS, Cortex-A9 ARM master control cores
LVDS mouths are connected with capacitance touch screen, and the IIC mouths of Cortex-A9 ARM main control chips are connected with FRAM memory, Cortex-A9
The GPIO mouths of ARM main control chips are connected with 4*4 matrix keyboards, the RTC mouths connection 3.3V buttons of Cortex-A9 ARM main control chips
Battery, the CAN mouths of Cortex-A9 ARM main control chips connect monitor, Receiver And Transmitter by CAN.
The system circuit includes Cortex-A9 ARM control chips, 10.1 cun of capacitance touch screens of wide temperature range type（LVDS interface）、
2GB DDR3 internal memories, 256MB Nand Flash memorizers, 1 GPS communication serial ports（Can receive what GPS modules sent
NEMA0183 messages）, 1 debugging serial ports（For type information and input debug command row）, IIC equipment interfaces（By I2C sets
Standby interface carries out I/O extensions）, SPI equipment interface FRAM（The FRAM memory that power down is not lost can be used to data storage and ginseng
Number）, CAN communication interface（With monitor, receiver, transmitter communications）, 10/100Mbps ethernet interfaces（With dimension
Shield software and remote control are communicated）, 4*4 matrix press-key control circuits, 64 GPIO mouths（The input of 32 way switch amounts and 32 tunnels
The output of switching value）.
As shown in Fig. 2 the system adopts NXP chip i.MX6Q hardware platforms, built-in Linux operating system is built；It is soft
Part is developed using the CodeBlocks software cross pattern compilers under (SuSE) Linux OS；Control software by application program,
File system, kernel program, four layers of composition of startup program, its logic control has following steps：
（One）, system electrification, load startup program；
（Two）, start kernel；
（Three）, load document system；
（Four）, application program is according to the Shell pin in the rc.local files write in advance under system directory/etc/init.d/
This order runs, and respectively enters server processes, system control program process and AD collection conversion process；
（Five）, into after server processes, respectively enter server receive and send thread；Into after system control program process
Respectively enter CAN receiving or sending threads, serial ports receiving or sending thread, network interface receiving or sending thread and IO control thread；Conversion process is gathered into AD
After respectively enter AD sampling and process thread.
As shown in figure 3, server receiving thread performs following steps：Two semaphores are first created, then creates two and shared
Internal memory, then by calling Socket () function, Bind () function, Listen () function after, into server reception and
Thread is sent, then calls Close () function to close socket, finally delete two semaphores.
As shown in figure 4, CAN receiving or sending threads perform following steps：Read first and receive from receiver, emitter, prison
Survey the CAN data of device and cache, CAN data frame heads of then packing forward CAN data messages, write CAN and transmit packets to caching
Simultaneously it is handed down to receiver, emitter, monitor in area.
As shown in figure 5, serial ports receiving or sending thread performs following steps：Serial ports receives the data from GPS, then carries out data
Parsing, and the message of response of packing, finally write serial ports and transmit packets to buffer area and return to GPS.
As shown in fig. 6, network interface receiving or sending thread performs following steps：Shared drive is created first, then receives network interface data,
And data are processed, finally write network interface and transmit packets to buffer area and return to client.
As shown in fig. 7, IO control threads perform following steps：First plus thread lock, then by by IIC serial-port extensions
The chip PCA 9555 of I/O is read after the status data of other cell boards, updates system mode, finally opens thread lock.
As shown in figure 8, A/D samplings and process thread perform following steps：Initially enter flashing light program to indicate that A/D samples
Carry out state, then PCA9554 chips carry out the configuration of multichannel time sharing sampling, then carry out A/D conversions, finally carry out A/D turn
Change process.
The system design is described in detail below：
（1）The main control chip that the system is adopted is grace intelligence Pu（Freescale）The Cortex-A9 ARM chip i.MX6Q of company,
Using NXP chip i.MX6Q hardware platforms, built-in Linux operating system is built.Software is used under (SuSE) Linux OS
CodeBlocks software cross pattern compilers are developed.Control software is by application program, file system, kernel program, startup
Four layers of composition of program.Startup program：Including hardware-related program, universal driver and its command tools program；Kernel
Program：Carry out configuration cutting as needed in kernel setup, add the driving oneself write；File system：It is integrated with Linux
Commonly used command and instrument, for system fairly perfect environment is provided；Application program adopts multi-thread concurrent processing mode, realizes control
The various functions of system processed.
（2）Main control part function mainly includes：Each working cell can be obtained from each working cell plate with completion status self-inspection
Work state information and carry out computing and communications and process, obtain every monitoring parameter from monitor, and from each power supply
Output obtains each power work status information, record storage and threshold discrimination is carried out to acquired every monitoring parameter, when super
To go out make in limited time and accordingly point out or operate, when important indicator project exceeds thresholding, send audible and visual alarm and favourable turn is operated, can
To complete operation automatically and manually to the start of two-way emitter, favourable turn, shutdown.
The concrete processing procedure of signal is：
CAN signal：Communications interface unit inquires that monitor, receiver, emitter response, message is divided into query message, control
Message processed, three kinds of message of setting, communication meets CAN2.0 specifications, and message transmissions are using CAN2.0B Extended Superframe Formats, baud rate
500Kbps.The response time<50ms, response time-out represents that operation is invalid.
Network interface signal：Safeguard by network interface connection between software and remote control and communication interface, using C/S model.Wherein lead to
Letter interface is server end, and port numbers can configure；Safeguard computer, remote control and can configure for client, IP address and port numbers.
Intercommunication adopts response mode, safeguards that end is masters, and communication interface is answer party.Response message response time requirement<
100ms.Data storage little endian mode.
Rs 232 serial interface signal：Connected by 232 string lines between communications interface unit and display unit.Serial ports attribute is baud rate
115200,8 data bit, no parity check position, 1 stop position, no data flow control.Communication adopts response mode, front panel to be tune
With side, communication interface is answer party.Data storage is little endian mode.The communication interface response time<100ms.Both sides are interrupted
Set of time is 10s between time-out.
（3）For the demand of product work bad environments, touch-screen adopts technical grade model, and reinforces, most low energy
- 30 DEG C are supported, using LVDS parallel ports interface mode, user operation requirement is realized；By friendly human-computer interaction interface, correctly
Show work in every parameter and status information of product etc..Additional customized 4*4 metal keyboards, it is when failing as touch function standby
With the button water proof and dust proof simultaneously has firm structure against damages and Electro Magnetic Compatibility.
（4）The system with the addition of the function of remote controller interface and local maintenance software network interface, and system remote control interface is
It is used for the data communication units for completing to be connected with maintenance with remotely monitor in hyperfrequency rangefinder.Major function includes：In control
Communication link is set up between system and remote manipulator；Communication link is set up between control system and LMT Local Maintenance Terminal.System
System Remote Control Interface unit includes two-way network port circuit, light net change-over circuit etc., for meeting the demand of long-distance remote control equipment.Dimension
Shield software client has a browser program, and control system has a corresponding Web server, passes through as server end
CGI（CGI(Common gateway interface)）Realize and the information exchange between external application.
The system technical indicator：
（1）Maximum functional clock：1GHz；
（2）Maximum memory space：256MB；
（3）Maximum running memory：2GB；
（4）Operating temperature range：- 30 DEG C～+50 DEG C；
（5）Interface type：USB、JTAG、UART、I2C, CAN interface, Ethernet interface etc..
Claims (3)
1. a kind of hyperfrequency rangefinder control system, it is characterised in that：The circuit system includes Cortex-A9 ARM master control cores
Piece, capacitance touch screen, network card chip, FRAM memory, 4*4 matrix keyboards and 3.3V button cells；Described Cortex-A9
The MAC mouths of ARM main control chips are connected with network card chip, and network card chip connects respectively clock source and status lamp, network card chip again with
Network isolation transformer is connected, and network isolation transformer connects Ethernet by RJ45；The UART of Cortex-A9 ARM master control cores
Mouth is connected with GPS, and the LVDS mouths of Cortex-A9 ARM master control cores are connected with capacitance touch screen, Cortex-A9 ARM main control chips
IIC mouths be connected with FRAM memory, the GPIO mouths of Cortex-A9 ARM main control chips are connected with 4*4 matrix keyboards,
The RTC mouths connection 3.3V button cells of Cortex-A9 ARM main control chips, the CAN mouths of Cortex-A9 ARM main control chips pass through
CAN connection monitor, Receiver And Transmitter.
2. a kind of implementation method of hyperfrequency rangefinder control system as claimed in claim 1, it is characterised in that：The system
Using NXP chip i.MX6Q hardware platforms, built-in Linux operating system is built；Software is used under (SuSE) Linux OS
CodeBlocks software cross pattern compilers are developed；Control software is by application program, file system, kernel program, startup
Four layers of composition of program, its logic control has following steps：
（One）, system electrification, load startup program；
（Two）, start kernel；
（Three）, load document system；
（Four）, application program is according to the Shell pin in the rc.local files write in advance under system directory/etc/init.d/
This order runs, and respectively enters server processes, system control program process and AD collection conversion process；
（Five）, into after server processes, respectively enter server receive and send thread；Into after system control program process
Respectively enter CAN receiving or sending threads, serial ports receiving or sending thread, network interface receiving or sending thread and IO control thread；Conversion process is gathered into AD
After respectively enter AD sampling and process thread.
3. the implementation method of a kind of hyperfrequency rangefinder control system according to claim 2, it is characterised in that：Described
Server receiving thread performs following steps：Two semaphores are first created, then create two shared drives,
Then by calling Socket () function, Bind () function, Listen () function after, into server reception and send out
Line sending journey, then calls Close () function to close socket, finally deletes two semaphores；
Described CAN receiving or sending threads perform following steps：First read and receive from receiver, emitter, monitor CAN
Data are simultaneously cached, CAN data frame heads of then packing, and forward CAN data messages, are write CAN and are transmitted packets to buffer area and issue
To receiver, emitter, monitor；
Described serial ports receiving or sending thread performs following steps：Serial ports receives the data from GPS, then carries out data parsing, and
The message of packing response, finally writes serial ports and transmits packets to buffer area and return to GPS；
Described network interface receiving or sending thread performs following steps：Shared drive is created first, then receives network interface data, and to data
Processed, finally write network interface and transmit packets to buffer area and return to client；
Described IO control threads perform following steps：First plus thread lock, then by by the core of IIC serial-port extension I/O
Piece PCA 9555 is read after the status data of other cell boards, updates system mode, finally opens thread lock；
Described A/D samplings and process thread performs following steps：Initially enter flashing light program indicate A/D sample carry out shape
State, then PCA9554 chips carry out the configuration of multichannel time sharing sampling, then carry out A/D conversions, finally carry out A/D conversion process.
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| CN201611207921.0A CN106647495A (en) | 2016-12-23 | 2016-12-23 | Ultra-high-frequency range finder control system and realization method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491629A (en) * | 2018-10-24 | 2019-03-19 | 同方电子科技有限公司 | Short-wave radio set based on ARM and industrial serial ports screen is virtually shown and local manipulation system |
| CN110109405A (en) * | 2018-12-10 | 2019-08-09 | 天津七六四通信导航技术有限公司 | A kind of control system and implementation method of Tacan navigation equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979219A (en) * | 2005-12-07 | 2007-06-13 | 中国科学院自动化研究所 | Laser far-distance automatic detecting method based on inlaying system |
| US20120078440A1 (en) * | 2010-09-27 | 2012-03-29 | Force Protection Technologies, Inc. | Methods and systems for integration of vehicle systems |
| CN104155006A (en) * | 2014-08-27 | 2014-11-19 | 湖北久之洋红外系统股份有限公司 | Handheld thermal infrared imager and method for same to carry out quick locking and ranging on small target |
| CN104698947A (en) * | 2015-03-25 | 2015-06-10 | 天津七六四通信导航技术有限公司 | Tactical air navigation system (TACAN) control and display system |
| CN205193562U (en) * | 2015-07-02 | 2016-04-27 | 深圳市蜂鸟智航科技有限公司 | Unmanned aerial vehicle flight control based on ethernet exchange bus |
-
2016
- 2016-12-23 CN CN201611207921.0A patent/CN106647495A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979219A (en) * | 2005-12-07 | 2007-06-13 | 中国科学院自动化研究所 | Laser far-distance automatic detecting method based on inlaying system |
| US20120078440A1 (en) * | 2010-09-27 | 2012-03-29 | Force Protection Technologies, Inc. | Methods and systems for integration of vehicle systems |
| CN104155006A (en) * | 2014-08-27 | 2014-11-19 | 湖北久之洋红外系统股份有限公司 | Handheld thermal infrared imager and method for same to carry out quick locking and ranging on small target |
| CN104698947A (en) * | 2015-03-25 | 2015-06-10 | 天津七六四通信导航技术有限公司 | Tactical air navigation system (TACAN) control and display system |
| CN205193562U (en) * | 2015-07-02 | 2016-04-27 | 深圳市蜂鸟智航科技有限公司 | Unmanned aerial vehicle flight control based on ethernet exchange bus |
Non-Patent Citations (1)
| Title |
|---|
| 周鸣争: "《嵌入式系统与应用》", 31 March 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491629A (en) * | 2018-10-24 | 2019-03-19 | 同方电子科技有限公司 | Short-wave radio set based on ARM and industrial serial ports screen is virtually shown and local manipulation system |
| CN110109405A (en) * | 2018-12-10 | 2019-08-09 | 天津七六四通信导航技术有限公司 | A kind of control system and implementation method of Tacan navigation equipment |
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