CN109327363A - A kind of transponder message simulation test sending method and device - Google Patents
A kind of transponder message simulation test sending method and device Download PDFInfo
- Publication number
- CN109327363A CN109327363A CN201710640494.3A CN201710640494A CN109327363A CN 109327363 A CN109327363 A CN 109327363A CN 201710640494 A CN201710640494 A CN 201710640494A CN 109327363 A CN109327363 A CN 109327363A
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- China
- Prior art keywords
- message
- bus
- transponder
- dry run
- signal generator
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
- H04L1/0058—Block-coded modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
- H04L67/5651—Reducing the amount or size of exchanged application data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
Abstract
The invention discloses a kind of transponder message simulation test sending method and devices, method includes: to generate message and dry run speed, according to the message and dry run velocity modulation message signals, the message signals are sent to reception device, and the message signals are message signals that the scale factor of determination obtains after compressing to amplitude according to the dry run speed.The present invention has the running environment that can be simulated in laboratory environments under train friction speed, in the message generation of laboratory simulation transponder and transmission process, and corresponding message receives the variation that signal is occurred, can with preferably detecting vehicle the communication performance of equipment the advantages that.
Description
Technical field
The present invention relates to Train Control Technology field more particularly to a kind of transponder message simulation test sending method and dresses
It sets.
Background technique
CTCS (bisexualArtemiapopulations from China) is the safety control system for guaranteeing safe train operation, improving conevying efficiency,
Transponder Transmission system is vehicle as the essential equipment of CTCS subsystem-a kind of mode that information is transmitted between ground is existing
Line speed-raising, Line for Passenger Transportation are widely applied on high-speed railway, it is played an important role in our railway operation controls.
In transponder Transmission system, transponder be used for train control system transmission lines basic parameter, line speed,
The ground installation of the fixation and real-time variable information such as special positioning, train operation target data, temporary speed limitation, station route, is answered
Answering device transmission module (BTM) is to realize the mobile unit of reception, demodulation, decoding and the work of these point informations.It is produced to improve
Reliability, enhancing research and development strength, the blank for filling up domestic transponder test of product etc., it is necessary to which site problems are such as lost to point (nothing
Transponder message) it is solved in laboratory, transponder message generating algorithm under a set of simulation train friction speed is designed, by true ring
Border reappears the related work performance and index of test product in the lab.
Existing transponder message forming method is primarily directed to specific message format in different routes, using manually or certainly
The point type message of different location is arranged in flowing mode, only reflects the situation of current line, i.e., can only be to train steady state
Under transponder tested, and cannot be tested in the transponder under laboratory is to operating status.Train is such as carried out to exist
Response test under operating status, then can only receive judgement in train actual motion, and which efficiency is extremely low also unfavorable
Properties of product are judged in research staff.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
Kind can simulate the running environment under train friction speed in laboratory environments, generate in the message of laboratory simulation transponder
The variation that signal is occurred is received with transmission process, and corresponding message, is capable of the communication performance of with preferably detecting vehicle equipment
Transponder message simulation test sending method and device
In order to solve the above technical problems, technical solution proposed by the present invention are as follows: a kind of transponder message simulation test transmission
Method, comprising: message and dry run speed are generated, according to the message and dry run velocity modulation message signals, to connecing
Receiving apparatus sends the message signals, the message signals be according to the dry run speed and the scale factor of determination to width
The message signals that value obtains after being compressed.
As a further improvement of the present invention, the message is generated by host computer, and is sent to signal by bus
Device；The dry run speed is generated by the host computer, and is sent to signal generator by bus；The signal modulator
It is calculated according to the dry run speed and determines scale factor, the message is modulated to message signals, and according to the ratio
The amplitude of factor pair message signals is compressed.
As a further improvement of the present invention, the signal generator under the control of sequence controller to the message into
Row modulation.
As a further improvement of the present invention, after the message signals by supervisory controller power amplifier by being amplified
It sends.
A kind of transponder message simulation test sending device, including host computer, signal generator and power amplifier；It is described
It is connected between host computer and signal generator by the first bus, passes through the second bus between the host computer and power amplifier
Connection；It is connected between the signal generator and power amplifier by data line；
The host computer is used for organized data message, dry run speed is arranged, and send institute by first bus
Message and dry run speed are stated to signal generator；
The signal generator is used to calculate scale factor according to the dry run speed, and the message is modulated to report
Literary signal, and compressed according to amplitude of the scale factor to message signals；
The power amplifier is used under the control of the host computer, is amplified to the message signals, and send
The message signals.
As a further improvement of the present invention, further include the sequence controller being connect with first bus, for connect
Receiving end synchronizes, and control signal generator generates synchronous triggering signal.
As a further improvement of the present invention, the sequence controller is FPGA controller.
As a further improvement of the present invention, first bus is PXI-Express bus or gpib bus or USB
Bus, second bus are PXI-Express bus or gpib bus or usb bus.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention by the amplitude to message signals, compress in proportion by the factor, can accurately simulate train not
With under the speed of service, the variation that message signals generate in car-ground transmission process, therefore column can be simulated in laboratory environments
Running environment under vehicle friction speed connects in the message generation of laboratory simulation transponder and transmission process, and corresponding message
It collects mail number variation occurred, is capable of the communication performance of with preferably detecting vehicle equipment.
2, the present invention uses independent FPGA device for sequence controller, accurately can send report according to test timing
Text, can be with accurate timing, and precision is higher, controls more convenient.
Detailed description of the invention
Fig. 1 is train transponder Transmission system structural schematic diagram.
Fig. 2 is the flow diagram of the specific embodiment of the invention.
Fig. 3 is the structural schematic diagram of the specific embodiment of the invention.
Fig. 4 is that specific embodiment of the invention host computer generates message schematic diagram.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
As shown in Figure 1, car antenna sends power waves and activates response by electromagnetic coupling when train passes through ground transponder
Device, transponder send message to mobile unit to complete the communication of ground-vehicle.In transponder and the opposing stationary situation of car antenna
Under, the uplink signal that BTM is received is FSK (frequency shift keying) modulated signal of Phase Continuation, centre frequency, modulation frequency
Partially, modulation rate is in transponder technology specification clearly stipulate that modulated signal is the transponder message of Bose-Chaudhuri-Hocquenghem Code.Signal table
Up to formula vFSK(t)=As cos{2π[f0+vm(t) Δ f] t }, wherein vFSKIt (t) is the signal of modulation, AsIt is big for the amplitude of signal
It is small, f0For center frequency, Δ f is frequency deviation, vm(t) be binary system modulated signal value it is 1 and -1, respectively corresponds in message
1 and 0, therefore uplink signal be amplitude, frequency, the continuous signal of phase.It is right by being found after a large amount of experimental study
In the case of transponder and car antenna relative motion, the frequency error as caused by Doppler effect is much smaller than uplink carrier frequency
The limits of error, thus it is negligible.Meanwhile phase is related with frequency, therefore phase error also can be ignored.By arranging
Garage's car kilometer, speed, time relationship know that the uplink signal amplitude envelops curve shape that BTM is received is constant, only exist
Time shaft is compressed by scale factor of speed.As long as therefore the signal can be simulated and using speed as the pressure of scale factor
Contracting signal is achieved that under simulation train friction speed that transponder message generates.
As shown in Fig. 2, the transponder message simulation test sending method of the present embodiment, comprising: generate message and simulation fortune
Scanning frequency degree sends the message signals to reception device according to the message and dry run velocity modulation message signals, described
Message signals are message signals that the scale factor of determination obtains after compressing to amplitude according to the dry run speed.
In the present embodiment, message signals are generated using FSK modulation mode.
In the present embodiment, the message is generated by host computer, and is sent to signal generator by bus；The simulation
The speed of service is generated by the host computer, and is sent to signal generator by bus；The signal modulator is according to the mould
The quasi- speed of service, which calculates, determines scale factor, the message is modulated to message signals, and according to the scale factor to message
The amplitude of signal is compressed.The signal generator is modulated the message under the control of sequence controller.It is described
Message signals pass through by sending after the amplification of supervisory controller power amplifier.
As shown in figure 3, the transponder message simulation test sending device of the present embodiment, including host computer, signal generator
And power amplifier；It is connected between the host computer and signal generator by the first bus, the host computer and power amplification
It is connected between device by the second bus；It is connected between the signal generator and power amplifier by data line；It is described upper
Machine is used for organized data message, dry run speed is arranged, and send the message and dry run by first bus
Speed is to signal generator；The signal generator is used to calculate scale factor according to the dry run speed, by the report
Text is modulated to message signals, and is compressed according to amplitude of the scale factor to message signals；The power amplifier is used
Under the control in the host computer, the message signals are amplified, and send the message signals.Host computer is that band is aobvious
The controller of display screen can work out message data, as shown in Figure 4.Host computer can work out various types of reports according to test demand
Literary data, and encoded, main includes 18 kinds of conventional messages, 8 kinds of specific messages and other customized messages.Signal occurs
Device uses FSK modulation mode, and signal generator is used not only for generating message signals by FSK modulation mode, is also used to generate same
Walk trigger signal.In the present embodiment, using based on labview graphical programming language upper computer software programming and Virtual instrument
The mode that the hardware of device board combines, to generate analog signal.The settable customized signal parameter configuration of software, message are fixed
The functions such as justice, synchronous triggering meet on hardware and produce fsk signal and synchronous triggering signal, and wherein fsk signal modulating speed is extremely
Reach 564.48kbit/s less, bandwidth and precision will be met the requirements.Synchronous triggering signal provides synchronous with the analog signal
Trigger signal shows that transponder has been turned on, and tests and controls for subsequent mobile unit.
Meanwhile in the synchronous triggering test for carrying out transponder, host computer can also have both timing control function, with reception
End synchronizes, and control signal generator generates synchronous triggering signal.
It in the present embodiment, further include the sequence controller being connect with first bus, it is same for being carried out with receiving end
Step, control signal generator generate synchronous triggering signal.The sequence controller is FPGA controller.Pass through independent timing control
Device processed controls the message transmission timing of transponder, carries out timing control relative to by host computer, timing control is more
Precisely, precision is higher, controls more convenient.
In the present embodiment, first bus is PXI-Express bus or gpib bus or usb bus, described
Second bus is PXI-Express bus or gpib bus or usb bus.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.Although of the invention
It has been disclosed in a preferred embodiment above, however, it is not intended to limit the invention.Therefore, all without departing from technical solution of the present invention
Content, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment, should all fall according to the present invention
In the range of technical solution of the present invention protection.
Claims (8)
1. a kind of transponder message simulation test sending method characterized by comprising message and dry run speed are generated,
According to the message and dry run velocity modulation message signals, the message signals, the message letter are sent to reception device
Number for the message signals that the scale factor of determination obtains after compressing to amplitude according to the dry run speed.
2. transponder message simulation test sending method according to claim 1, it is characterised in that: the message is by upper
Machine generates, and is sent to signal generator by bus；The dry run speed is generated by the host computer, and passes through bus
It is sent to signal generator；The signal modulator calculates according to the dry run speed and determines scale factor, by the report
Text is modulated to message signals, and is compressed according to amplitude of the scale factor to message signals.
3. transponder message simulation test sending method according to claim 2, it is characterised in that: the signal generator
The message is modulated under the control of sequence controller.
4. transponder message simulation test sending method according to claim 3, it is characterised in that: the message signals are logical
It crosses by being sent after the amplification of supervisory controller power amplifier.
5. a kind of transponder message simulation test sending device, it is characterised in that: put including host computer, signal generator and power
Big device；It is connected between the host computer and signal generator by the first bus, is led between the host computer and power amplifier
Cross the connection of the second bus；It is connected between the signal generator and power amplifier by data line；
The host computer is used for organized data message, dry run speed is arranged, and send the report by first bus
Text and dry run speed are to signal generator；
The signal generator is used to calculate scale factor according to the dry run speed, and the message is modulated to message letter
Number, and compressed according to amplitude of the scale factor to message signals；
The power amplifier is used under the control of the host computer, is amplified to the message signals, and described in transmission
Message signals.
6. transponder message simulation test sending device according to claim 5, it is characterised in that: further include and described
The sequence controller of one bus connection, for synchronizing with receiving end, control signal generator generates synchronous triggering signal.
7. transponder message simulation test sending device according to claim 6, it is characterised in that: the sequence controller
For FPGA controller.
8. transponder message simulation test sending device according to claim 7, it is characterised in that: first bus is
PXI-Express bus or gpib bus or usb bus, second bus are that PXI-Express bus or GPIB are total
Line or usb bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640494.3A CN109327363A (en) | 2017-07-31 | 2017-07-31 | A kind of transponder message simulation test sending method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640494.3A CN109327363A (en) | 2017-07-31 | 2017-07-31 | A kind of transponder message simulation test sending method and device |
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| Publication Number | Publication Date |
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| CN109327363A true CN109327363A (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710640494.3A Pending CN109327363A (en) | 2017-07-31 | 2017-07-31 | A kind of transponder message simulation test sending method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845847A (en) * | 2020-06-28 | 2020-10-30 | 通号城市轨道交通技术有限公司 | Transponder simulation method and system |
| CN114785377A (en) * | 2022-04-06 | 2022-07-22 | 北京全路通信信号研究设计院集团有限公司 | Transponder testing method, device, equipment and storage medium |
| WO2024078056A1 (en) * | 2022-10-12 | 2024-04-18 | 沈阳铁路信号有限责任公司 | Message controllable passive transponder and message sending method |
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| US20080297398A1 (en) * | 2007-05-31 | 2008-12-04 | Kabushiki Kaisha Toshiba | Dme ground apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845847A (en) * | 2020-06-28 | 2020-10-30 | 通号城市轨道交通技术有限公司 | Transponder simulation method and system |
| CN111845847B (en) * | 2020-06-28 | 2022-06-17 | 通号城市轨道交通技术有限公司 | Transponder simulation method and system |
| CN114785377A (en) * | 2022-04-06 | 2022-07-22 | 北京全路通信信号研究设计院集团有限公司 | Transponder testing method, device, equipment and storage medium |
| CN114785377B (en) * | 2022-04-06 | 2023-10-20 | 北京全路通信信号研究设计院集团有限公司 | Transponder testing method, device, equipment and storage medium |
| WO2024078056A1 (en) * | 2022-10-12 | 2024-04-18 | 沈阳铁路信号有限责任公司 | Message controllable passive transponder and message sending method |
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Application publication date: 20190212 |
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