CN102963394B - FDM capacity multiplica type onboard reception device and responder system - Google Patents
FDM capacity multiplica type onboard reception device and responder system Download PDFInfo
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Abstract
The invention discloses a kind of FDM capacity multiplica type onboard reception device and responder system, relate to field of railway train operation safety, wherein FDM capacity multiplica type onboard reception device comprises: the former communication channel in existing onboard reception device; And at least one communication channel newly increased, described in the communication channel that newly increases for processing the data received, the data after described process are sent to train control system.The present invention can improve the amount of communication data between ground transponder further, ensure that train control system can safely, reliably, accurately car controlling, ensure traffic safety further, enormously simplify existing responder system simultaneously, made that construction costs is low, construction is simple.
Description
Technical field
The present invention relates to railway operation safety, be applicable to train auto-matic control field, particularly a kind of FDM capacity multiplica type onboard reception device and responder system.
Background technology
Current China Express Railway, the basic skills controlling train is: adopt " Europe " transponder technology.The brief principle of this technology is: the various track datas on ground store by ground transponder, as length of line, the gradient, bend, kilometer post, commutation point etc., when train sails the zone of action of ground transponder into, the energy of train radiation 27MHz earthward, after ground transponder obtains energy, immediately by ground store track data with the FSK mode of frequency regulation of carrier frequency 4.23M to locomotive transmission.After train receives the information on ground, finally realize automatic car controlling by train control system again through amplification, demodulation, decoding.
Therefore, want to realize the communication that the automatic car controlling of train control system just be unable to do without ground transponder and onboard reception device, and along with the raising of train travel speed, amount of communication data between current ground transponder and onboard reception device too little, can not meet requirements, thus may have influence on train control system can safely, reliable, accurate car controlling, affect traffic safety further.
Summary of the invention
In order to solve the problem, the invention provides a kind of FDM capacity multiplica type onboard reception device and responder system, the amount of communication data between ground transponder and onboard reception device can be increased.
A kind of FDM capacity multiplica type onboard reception device, comprising:
Former communication channel in existing onboard reception device, the frequency sent for receiving ground transponder is the fsk signal of 4.23MHz, carries out process send to train control system to described signal;
And at least one communication channel newly increased, the described communication channel newly increased is for receiving with the modulation classification of described 4.23MHz signal and all not identical signal of frequency simultaneously, described signal is processed, the data after described process are sent to train control system.
A kind of FDM capacity multiplica type responder system, comprises above-mentioned onboard reception device and ground transponder; Wherein, described ground transponder, comprise the former communication channel in existing ground transponder, and at least one communication channel newly increased, the described communication channel newly increased is for transmitting the data needed for car controlling to onboard reception device, improve the data capacity of ground transponder, the amount of communication data between ground transponder and onboard reception device is doubled.
Beneficial effect of the present invention is: the present invention by increasing new communication channel in FDM capacity multiplica type onboard reception device, the signal of different modulating standard and different frequency can be received simultaneously, the data volume multiplication making it receive, FDM capacity multiplica type responder system of the present invention can improve the amount of communication data between ground transponder further, ensure that train control system can safety, reliably, accurately car controlling, ensure traffic safety further, enormously simplify existing responder system simultaneously, make construction costs low, construction is simple.
Accompanying drawing explanation
The structural representation of the FDM capacity multiplica type onboard reception device that Fig. 1 provides for the embodiment of the present invention one;
The detailed schematic block diagram of the FDM capacity multiplica type onboard reception device that Fig. 2 provides for the embodiment of the present invention one;
The structural representation of the FDM capacity multiplica type responder system that Fig. 3 provides for the embodiment of the present invention two;
The detailed maps of the FDM capacity multiplica type ground transponder in the FDM capacity multiplica type responder system that Fig. 4 provides for the embodiment of the present invention two.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly clear and definite, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and explanation thereof are mainly used in explaining the present invention, but not as a limitation of the invention.
Embodiment one
Embodiments provide a kind of FDM capacity multiplica type onboard reception device, the signal of different modulating standard and different carrier frequency can be received simultaneously, as shown in Figure 1, comprise: the former communication channel in existing onboard reception device and the communication channel that at least one newly increases, wherein, former communication channel is the fsk signal of 4.23MHz for receiving the frequency of ground transponder transmission, this signal is processed and sends to train control system, the described communication channel newly increased for receive that ground transponder sends with the modulation classification of 4.23MHz signal and all not identical signal of frequency, above-mentioned signal is processed, train control system is sent to by processing the data obtained.
Onboard reception device of the present invention has newly increased at least one communication channel, the signal of different modulating standard and different carrier frequency can be received simultaneously, the data volume multiplication that onboard reception device is received, thus the amount of communication data improved further between ground transponder and onboard reception device, thus ensure that train control system can safely, reliably, accurately car controlling, ensured traffic safety further.
Further, the communication channel newly increased in embodiment of the present invention onboard reception device specifically comprises:
Amplification filtering module, for carrying out amplification filtering process to the signal received;
In embodiments of the present invention, onboard reception device receives multiple different modulating standard and the signal of different frequency and various interfering signal simultaneously, and therefore this amplification filtering module is mainly used to fsk signal that filtration frequencies is 4.23MHz and other interfering signals;
Demodulation module, for carrying out demodulation to the signal after amplification filtering process; Concrete, the demodulation module in the embodiment of the present invention is primarily of carrier extract circuit and multiplier circuit composition;
Decoding output module, for adopting two-way safety decoding process to carry out decoding process to the data that demodulation obtains, obtaining user's message and sending to train control system;
Concrete, if be FDM type with the matching used ground transponder of onboard reception device of the present invention, ground transponder is except to onboard reception device transmission frequency being the fsk signal of 4.23MHz, also send psk signal to onboard reception device, therefore the amplification filtering module in the communication channel that newly increases of the present invention saves psk signal, therefore the demodulation module in this channel specifically adopts PSK demoder to carry out demodulation process, wherein signal is through bandpass filter process, recycling multiplier, input reference signal and this signal multiplication of a road and the same homophase frequently of this signal, and then process through low-pass filter, last is that foundation is through the process of sampling decision device with timing pip, complete demodulating process,
And because the carrier frequency of the psk signal of ground transponder transmission may be 13.54MHz, 9.032MHz or 6.77MHz, so the signal received in the communication channel newly increased is psk signal, and the frequency of this signal is all higher than 4.23MHz, so the data volume entrained by this signal increases, at one time, this FDM capacity multiplica type onboard reception device exports to the data volume multiplication of train control system, improve the speed of onboard reception device processing signals, meet the needs of train control system, improve traffic safety;
Further, the two-way safety decoding process that decoding output module adopts is specially: what in decoding output module, the diverse decoding process of employing two cover was independent, parallel carries out decoding to signal, this decoding output module specifically comprises: the first decoding unit, second decoding unit and comparing unit, wherein the first decoding unit is used for carrying out decoding process to the data received independently, second decoding unit be used for described first decoding unit synchronously and independently decoding process is carried out to the data received, whether comparing unit is consistent with two decode results that the second decoding unit obtains for comparing the first decoding unit, when only having these two decode results consistent, decode results just exports by decoding output module, thus ensure that the safety of the data exporting to train control system, the traffic safety of further raising train.
Further, FDM capacity multiplica type onboard reception device in the embodiment of the present invention also comprises driver module and power module, wherein driver module provides the pumping signal of energy for generation of responser earthward, and receive the signal that responser returns, the exciting signal frequency wherein produced is 27.095MHz, and power module is used for
Concrete, as shown in Figure 2, be the functional block diagram of the FDM capacity multiplica type onboard reception device that the embodiment of the present invention provides, former communication channel and the communication channel newly increased receive and processing data independently, transmit data concurrently to train control system; Be described for the communication channel newly increased, after this communication channel receives CF signal, by amplification filtering module, above-mentioned CF signal purification is amplified, be transported to demodulation module again to process, demodulation module is primarily of carrier extract circuit and multiplier circuit composition, and incoming signal has been multiplied with carrier frequency demodulation tasks, then passes through integral filter circuit restoring data signal, translate user's message finally by decoding output module, above-mentioned user's message is sent to train control system.
The present invention by increasing new communication channel in FDM capacity multiplica type onboard reception device, the signal of different modulating standard and different frequency can be received simultaneously, the data volume multiplication making it receive, FDM capacity multiplica type responder system of the present invention can improve the amount of communication data between ground transponder further, ensure that train control system can safely, reliably, accurately car controlling, ensure traffic safety further, enormously simplify existing responder system simultaneously, make that construction costs is low, construction is simple.
Embodiment two
The invention provides a kind of frequency division two-way capacity multiplica type responder system, as shown in Figure 3, comprise ground transponder and the onboard reception device described in embodiment one; Wherein above-mentioned ground transponder comprises the former communication channel in existing ground transponder, and at least one communication channel newly increased, the described communication channel newly increased is for transmitting the data needed for car controlling to onboard reception device, improve the data capacity of ground transponder, the amount of communication data between ground transponder and onboard reception device is doubled;
The present invention is by all newly increasing at least one communication channel in ground transponder and onboard reception device, achieve the multiplication of ground transponder data capacity, thus make the amount of communication data between ground transponder and onboard reception device double further, thus ensure that train control system can safely, reliably, accurately car controlling, ensured traffic safety further;
In the present invention, onboard reception device in FDM capacity multiplica type responder system and ground transponder with the use of, as when only having newly increased a communication channel A in ground transponder, then also only need newly increase a communication channel A ＇ in onboard reception device; When train sails the zone of action of above-mentioned ground transponder into, above-mentioned onboard reception device activates this ground transponder by Car antnna downward radiation 27.095MHz energy signal, after this ground transponder is activated, each communication channel of its inside is independent of the data needed for onboard reception device transmission car controlling, each communication channel in onboard reception device processes above-mentioned data, then sends to train control system; Namely in ground transponder, the data of channel A are transferred to the channel A ＇ in onboard reception device by Car antnna, carry out demodulation, decoding process, finally export to train control system by channel A ＇ to the data received.
Further, as shown in Figure 4, the ground transponder in the embodiment of the present invention also comprises frequency synthesis module, for processing the 27.095MHz energy signal received, and the carrier frequency required for communication channel exporting above-mentioned former communication channel Yu newly increase; Wherein because former communication channel is the communication channel in existing responser, the carrier frequency that therefore former communication channel needs is 4.23MHz; And due to specifically because the energy of ground transponder that the present invention protects is provided by the energy signal of the 27.095MHz of onboard reception device radiation, therefore not only 27.095MHz is energy but also be standard time clock, thus by calculate can know the communication channel that newly increases can frequency be 13.54MHz, 9.032MHz, 6.77MHz; Concrete, if during the communication channel newly increased when only having in this ground transponder, the carrier frequency that this communication channel preferred needs is 9.032MHz, this is because 13.5MHz distance 27.095MHz is nearer, easily be subject to stronger 27.095MHz interference, and 6.77MHz distance 4.23MHz is nearer, interval then between two channels is less, the strict demand of filter " squareness factor " can be proposed onboard reception device, can increase difficulty and the cost of reception facilities, therefore known 9.032MHz is optimum frequency.
Further, the communication channel newly increased in the embodiment of the present invention specifically comprises:
Data memory module, needs to be transferred to the data of onboard reception device for storing;
Modulation module, for carrying out modulation treatment to the carrier frequency of the data and described communication channel that will be transferred to onboard reception device;
Signal transmission module, sends coil by described Signal transmissions after modulation treatment to onboard reception device for passing through;
Concrete, in embodiments of the present invention, modulation module in the communication channel newly increased adopts phase keying PSK to carry out modulation treatment, and in former communication channel, still adopting frequency shift keying fsk to carry out modulation treatment, the FDM capacity multiplica type ground transponder in such embodiment of the present invention adopts the mode of double-standard to carry out modulation treatment to the data being transferred to onboard reception device; And in the communication channel newly increased, why adopt phase keying PSK to carry out modulation treatment, this is because PSK and FSK, ASK compare, not only have higher noise robustness, and its occupied bandwidth is less, energy actv. utilizes the band resource of channel; If under the condition of same bit error rate, the antijamming capability of PSK in the requirement of signal to noise ratio, is better than FSK2 doubly, is better than ASK4 doubly; And in these 3 kinds of modulation systems of PSK, FSK and ASK, consider from ground transponder this respect, the simplest, the single frequency of PSK and ASK, occupied bandwidth are less, the concentration of energy of transmitting, power consumption are minimum.Just need two frequency bins to take larger bandwidth according to frequency modulation, power consumption is 2 times of PSK; Consider from mobile unit this respect, the technical risk of realization and cost PSK=FSK, even slightly simple than FSK, mainly antijamming capability is not all right for the reason forbidden of ASK and FSK, and formulation standard must look to the future the application under 500km/h condition;
Concrete, carrier frequency due to the communication channel newly increased is 9.032MHz, and it adopts phase keying PSK to carry out modulation treatment, therefore the transfer rate of this communication channel can be improved widely, theoretic maximum transmission rate is 9.032Mbit/s, and owing to being subject to the restriction of filter level in actual applications, the transfer rate that signal transmission module in the embodiment of the present invention uses is 1.12Mbit/s or 564.48kbit/s, more a lot of soon than the transfer rate of the communication channel in existing responser, so along with the raising of transfer rate, the data volume of this ground transponder transmission also increases exponentially, thus achieve the multiplication of the amount of communication data between ground transponder and onboard reception device.
Further, FDM capacity multiplica type ground transponder in the embodiment of the present invention also comprises power extraction module and starts control module, wherein power extraction module is used for extracting former communication channel and the communication channel that newly increases from the 27.095MHz energy signal received and normally works required electricity, starts control module and is used for substep and starts above-mentioned former communication channel and the communication channel newly increased;
Electricity needed for the ground transponder work in the present invention be from the 27.095MHz energy signal of mobile unit radiation be obtain, and due to after having newly increased communication channel, power consumption can increase, former communication channel is made to cause the delay start of ground transponder because energy competes with the communication channel newly increased, cause not meeting existing engineering factor, therefore in order to avoid the generation of the problems referred to above, startup control module in the present invention needs substep to start former communication channel and the communication channel newly increased, be and first start former communication channel, the communication channel newly increased is restarted after energy increases, specifically due to the communication channel that newly increases adopt low pressure, at a high speed, micro-power device, therefore the operating voltage height difference needed for different circuit devcies carries out energy grouping power supply, thus reasonable distribution resource, such as: the energy that the communication channel that newly increases of the present invention adopts PSK phase modulation system just to save a times than the FSK frequency modulation system of existing communication channel therefore this ground transponder first starts former communication channel after obtaining energy, and restarting the communication channel newly increased can not impact both sides.
Further, the communication channel newly increased in the embodiment of the present invention also comprises filtration module, for strengthening the signal attenuation to described former communication channel, stop mutual crosstalk when working between channel, " width-frequently " characteristic curve especially by the receiving filter by the communication channel newly increased is designed to more precipitous " squareness factor " and realizes;
The principle of work of the present invention's FDM capacity multiplica required for protection type ground transponder is specially: when locomotive sails the zone of action of this ground transponder into, the 27.095MHz energy signal that vehicle-mounted receiving wire sends, the receiving coil of ground transponder receives the energy signal of above-mentioned 27.095MHz, obtain ground transponder by power extraction module normally to work described electricity, frequency synthesis module simultaneously in ground transponder produces former communication channel and the carrier frequency needed for the communication channel newly increased according to the energy signal of above-mentioned 27.095MHz, and start control module substep startup two communication channels independently to work, namely the communication channel first started, restart the communication channel newly increased, be described for the communication channel newly increased: read the data stored in the data memory module of the communication channel newly increased, by modulation module, the carrier frequency of the data of reading and this communication channel is carried out phase-modulation (PSK) to process, finally by the transmission coil of signal transmission module and ground transponder to the signal after the process of onboard reception device radiation modulation.
The present invention by increasing new communication channel in FDM capacity multiplica type onboard reception device, other data outside original transponder data can be received, the data volume multiplication making it receive, FDM capacity multiplica type responder system of the present invention can improve the amount of communication data between ground transponder further, ensure that train control system can safely, reliably, accurately car controlling, ensure traffic safety further, enormously simplify existing responder system simultaneously, make that construction costs is low, construction is simple.
In a word, to the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a FDM capacity multiplica type onboard reception device, is characterized in that, described onboard reception device comprises:
Former communication channel in existing onboard reception device, the frequency sent for receiving ground transponder is the fsk signal of 4.23MHz, carries out process send to train control system to described signal;
And at least one communication channel newly increased, described in the communication channel that newly increases for receive with the modulation classification of described 4.23MHz signal and frequency is all not identical simultaneously
pSKsignal, processes described signal, and the data after described process are sent to train control system;
Driver module, provides the single-frequency of energy to be the pumping signal of 27.095MHz for generation of responser earthward;
The psk signal that the described communication channel newly increased receives is the fractional frequency signal of described pumping signal.
2. onboard reception device as claimed in claim 1, is characterized in that, described in the communication channel that newly increases comprise:
Amplification filtering module, for carrying out amplification filtering process to the signal received, rejection frequency is fsk signal and other interfering signals of 4.23MHz;
Demodulation module, for carrying out demodulation process to the signal after amplification filtering process;
Decoding output module, for adopting two-way safety decoding process to carry out decoding process to the data that demodulation obtains, obtaining user's message and sending to train control system.
3. onboard reception device as claimed in claim 2, it is characterized in that, described demodulation module specifically adopts PSK demoder to carry out demodulation process.
4. onboard reception device as claimed in claim 2, it is characterized in that, described decoding output module specifically comprises:
First decoding unit, for carrying out decoding process to the data received independently;
Second decoding unit, for described first decoding unit synchronously and independently decoding process is carried out to the data received;
Comparing unit, whether consistent with two decode results that the second decoding unit obtains for comparing the first decoding unit, only just decode results is exported when comparative result is consistent.
5. a FDM capacity multiplica type responder system, is characterized in that, described responder system comprises ground transponder and the onboard reception device as described in any one of Claims 1-4; Wherein,
Described ground transponder, comprise the former communication channel in existing ground transponder, and at least one communication channel newly increased, the described communication channel newly increased is for transmitting the data needed for car controlling to onboard reception device, improve the data capacity of ground transponder, the amount of communication data between ground transponder and onboard reception device is doubled.
6. responder system as claimed in claim 5, it is characterized in that, described ground transponder also comprises: frequency synthesis module, for processing the 27.095MHz energy signal received, and the carrier frequency required for communication channel exporting described former communication channel Yu newly increase.
7. responder system as claimed in claim 5, is characterized in that, described in the communication channel that newly increases comprise:
Data memory module, needs to be transferred to the data of onboard reception device for storing;
Modulation module, for carrying out modulation treatment to the carrier frequency of the data and the described communication channel newly increased that will be transferred to onboard reception device;
Signal transmission module, sends coil by the Signal transmissions after modulation treatment to described onboard reception device for passing through.
8. responder system as claimed in claim 7, it is characterized in that, described modulation module specifically adopts phase keying PSK to carry out modulation treatment.
9. responder system as claimed in claim 7, it is characterized in that, the transfer rate of described signal transmission module is 1.12Mbit/s or 564.48kbit/s.
10. responder system as claimed in claim 5, it is characterized in that, described ground transponder also comprises:
Power extraction module, normally to work required electricity for extracting described former communication channel and the communication channel that newly increases from the 27.095MHz energy signal received;
Start control module, start described former communication channel and the communication channel newly increased for substep.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510072756.1A CN104670266B (en) | 2012-12-10 | 2012-12-10 | Large Copacity transponder transmission system |
| CN201210526715.1A CN102963394B (en) | 2012-12-10 | 2012-12-10 | FDM capacity multiplica type onboard reception device and responder system |
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| CN201210526715.1A CN102963394B (en) | 2012-12-10 | 2012-12-10 | FDM capacity multiplica type onboard reception device and responder system |
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| CN201510072756.1A Division CN104670266B (en) | 2012-12-10 | 2012-12-10 | Large Copacity transponder transmission system |
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| CN114070351B (en) * | 2021-11-29 | 2023-08-15 | 北京交大思诺科技股份有限公司 | Transponder transmission system capable of meeting high-speed application |
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| US3137847A (en) * | 1959-11-04 | 1964-06-16 | Link Aviation Inc | Signalling system |
| DE3401517A1 (en) * | 1984-01-18 | 1985-07-25 | ANT Nachrichtentechnik GmbH, 7150 Backnang | INFORMATION TRANSFER SYSTEM |
| DE4232919A1 (en) * | 1992-09-28 | 1994-03-31 | Siemens Ag | Determination of position of train on rail track - using trackside transponders that react to signal produced by train mounted unit and triggering identification fed back to train |
| US6411199B1 (en) * | 1998-08-21 | 2002-06-25 | Keri Systems, Inc. | Radio frequency identification system |
| EP1356416A4 (en) * | 2000-12-22 | 2004-11-24 | Gallagher Group Ltd | Improved identification reader |
| CN201039156Y (en) * | 2007-03-20 | 2008-03-19 | 刘占杰 | Antenna device for high-speed railway responder |
| CN101364816A (en) * | 2007-08-06 | 2009-02-11 | 沈阳铁路信号工厂 | Large capacity spot type answering machine |
| CN101924703B (en) * | 2010-09-03 | 2012-05-30 | 北京全路通信信号研究设计院有限公司 | Method and device for decoding BTM (Balise Transmission Module) message, and train control system based on balise |
| CN102361469B (en) * | 2011-06-21 | 2013-10-30 | 北京交大思诺科技有限公司 | Device and method for parallel decoding of software and hardware |
| CN102355278B (en) * | 2011-06-21 | 2013-12-18 | 北京交大思诺科技有限公司 | Highly-reliable receiving device for transponder information and transponder information receiving method |
| CN102780507A (en) * | 2012-08-18 | 2012-11-14 | 骆燕胜 | Dual-frequency responder technology |
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