CN102963394A - Frequency-division multiplexing capacity-doubled vehicle-mounted receiving device and transponder system - Google Patents
Frequency-division multiplexing capacity-doubled vehicle-mounted receiving device and transponder system Download PDFInfo
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- CN102963394A CN102963394A CN2012105267151A CN201210526715A CN102963394A CN 102963394 A CN102963394 A CN 102963394A CN 2012105267151 A CN2012105267151 A CN 2012105267151A CN 201210526715 A CN201210526715 A CN 201210526715A CN 102963394 A CN102963394 A CN 102963394A
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Abstract
The invention discloses a frequency-division multiplexing capacity-doubled vehicle-mounted receiving device and a transponder system, and relates to the safety field of railway train operation, The frequency-division multiplexing capacity-doubled vehicle-mounted receiving device comprises an original communication channel in an existing vehicle-mounted receiving device, and at least one added communication channel used for processing received data and sending the processed data to a train control system. The frequency-division multiplexing capacity-doubled vehicle-mounted receiving device can further increase the amount of communication data with a ground transponder, guarantees safe, reliable and precise train control of the train control system, further guarantees the traffic safety, and greatly simplifies an existing transponder system to realize low construction cost and simple construction.
Description
Technical field
The present invention relates to railway operation safety, be applicable to the train automation field, particularly a kind of FDM capacity multiplication type onboard reception device and responder system.
Background technology
Present China Express Railway, the basic skills of control train is: adopt " Europe " transponder technology.The brief principle of this technology is: the various track datas on ground are stored by ground transponder, such as length of line, the gradient, bend, kilometer post, commutation point etc., when train sails the zone of action of ground transponder into, train is the energy of radiation 27MHz earthward, after ground transponder obtained energy, the track data of immediately ground being stored transmitted to locomotive with the FSK mode of frequency regulation of carrier frequency 4.23M.After train receives the information on ground, realize automatic car controlling by train control system more at last through amplification, demodulation, decoding.
Therefore, want to realize that the automatic car controlling of train control system just be unable to do without communicating by letter of ground transponder and onboard reception device, and along with the raising of train travel speed, present ground transponder and the amount of communication data between the onboard reception device too little, can not meet requirements, can be safely thereby may have influence on train control system, reliable, accurate car controlling, further affect traffic safety.
Summary of the invention
In order to address the above problem, the invention provides a kind of FDM capacity multiplication type onboard reception device and responder system, can increase the amount of communication data between ground transponder and the onboard reception device.
A kind of FDM capacity multiplication type onboard reception device comprises:
Former communication channel in the existing onboard reception device, the frequency that is used for the transmission of reception ground transponder is the fsk signal of 4.23MHz, described signal is processed sending to train control system;
And at least one communication channel that increases newly, the described communication channel that increases newly is used for receiving simultaneously and the equal not identical signal of the modulation classification of described 4.23MHz signal and frequency, described signal is processed, the data after the described processing are sent to train control system.
A kind of FDM capacity multiplication type responder system comprises above-mentioned onboard reception device and ground transponder; Wherein, described ground transponder, comprise the former communication channel in the existing ground transponder, and at least one communication channel that increases newly, the described communication channel that increases newly is used for to the required data of onboard reception device transmission car controlling, improve the data capacity of ground transponder, make the amount of communication data multiplication between ground transponder and onboard reception device.
Beneficial effect of the present invention is: the present invention is by increasing new communication channel in FDM capacity multiplication type onboard reception device, can receive simultaneously the signal of different modulating standard and different frequency, make the data volume multiplication of its reception, FDM capacity multiplication type responder system of the present invention can further improve and ground transponder between amount of communication data, guaranteed that train control system can safety, reliably, accurately car controlling, further ensured traffic safety, simultaneously greatly simplified existing responder system, made construction costs low, construction is simple.
Description of drawings
The structural representation of the FDM capacity multiplication type onboard reception device that Fig. 1 provides for the embodiment of the invention one;
The detailed functional block diagram of the FDM capacity multiplication type onboard reception device that Fig. 2 provides for the embodiment of the invention one;
The structural representation of the FDM capacity multiplication type responder system that Fig. 3 provides for the embodiment of the invention two;
The detailed maps of the FDM capacity multiplication type ground transponder in the FDM capacity multiplication type responder system that Fig. 4 provides for the embodiment of the invention two.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention more explicit, 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
The embodiment of the invention provides a kind of FDM capacity multiplication type onboard reception device, can receive simultaneously the signal of different modulating standard and different carrier frequency, as shown in Figure 1, comprise: the former communication channel in the existing onboard reception device and the communication channel that at least one increases newly, wherein, the frequency that former communication channel is used for the transmission of reception ground transponder is the fsk signal of 4.23MHz, train control system is processed and sent to this signal, the described communication channel that increases newly be used for to receive ground transponder that send with the equal not identical signal of the modulation classification 4.23MHz signal and frequency, above-mentioned signal is processed, and the data that processing is obtained send to train control system.
Onboard reception device of the present invention has increased at least one communication channel newly, can receive simultaneously the signal of different modulating standard and different carrier frequency, the data volume multiplication that onboard reception device is received, thereby further improve the amount of communication data between ground transponder and the onboard reception device, thereby guaranteed train control system can be safely, reliably, accurately car controlling, further ensured traffic safety.
Further, the communication channel that increases newly in the embodiment of the invention onboard reception device specifically comprises:
The amplification filtering module is used for that the signal of receiving is carried out amplification filtering and processes;
In embodiments of the present invention, onboard reception device receives signal and the various interfering signal of multiple different modulating standard and different frequency simultaneously, so this amplification filtering module is mainly used to filter fsk signal and other interfering signals that frequency is 4.23MHz;
Demodulation module is used for the signal after the amplification filtering processing is carried out demodulation; Concrete, the demodulation module in the embodiment of the invention mainly is comprised of carrier extract circuit and multiplier circuit;
The decoding output module is used for adopting the safe decoding process of two-way that the data that demodulation obtains are deciphered processing, obtains user's message and sends to train control system;
Concrete, if with the matching used ground transponder of onboard reception device of the present invention be the FDM type, ground transponder is except to the onboard reception device transmission frequency is the fsk signal of 4.23MHz, also send psk signal to onboard reception device, therefore the amplification filtering module in the communication channel that increases newly of the present invention has been preserved psk signal, therefore the demodulation module in this channel specifically adopts the PSK demoder to carry out demodulation process, wherein signal is processed through bandpass filter, the recycling multiplier, input one the road and this signal with frequently reference signal and this signal multiplication of homophase, and then process through low-pass filter, take timing pip as according to processing through the sampling decision device, finish demodulating process at last;
And because the carrier frequency of the psk signal that ground transponder sends may be 13.54MHz, 9.032MHz or 6.77MHz, so the signal of receiving in the communication channel that increases newly is psk signal, and the frequency of this signal all is higher than 4.23MHz, so the entrained data volume of this signal increases, this FDM capacity multiplication type onboard reception device is exported to the data volume multiplication of train control system at one time, improved the speed of onboard reception device processing signals, satisfy the needs of train control system, improved traffic safety;
Further, the safe decoding process of two-way of decoding output module employing is specially: adopt the diverse decoding process of two covers is independent, walk abreast signal is deciphered in the decoding output module; This decoding output module specifically comprises: the first decoding unit, the second decoding unit and comparing unit, wherein the first decoding unit is used for independently the data of receiving being deciphered processing, the second decoding unit is used for synchronously and independently the data of receiving being deciphered processing with described the first decoding unit, comparing unit is used for relatively whether the first decoding unit is consistent with two decode results that the second decoding unit obtains, the decoding output module is just exported decode results when only having these two decode results consistent, thereby guaranteed to export to the safety of the data of train control system, further improved the traffic safety of train.
Further, FDM capacity multiplication type onboard reception device in the embodiment of the 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 that wherein produces is 27.095MHz, and power module is used for
Concrete, as shown in Figure 2, the functional block diagram of the FDM capacity multiplication type onboard reception device that provides for the embodiment of the invention, former communication channel receives and processing data independently with the communication channel that increases newly, transmits data to train control system concurrently; Describe as an example of the communication channel that increases newly example, after this communication channel receives CF signal, by the amplification filtering module above-mentioned CF signal purification is amplified, being transported to demodulation module processes again, demodulation module mainly is comprised of carrier extract circuit and multiplier circuit, and incoming signal and carrier frequency multiply each other and finish demodulation tasks, again by integral filter circuit restoring data signal, translate user's message by the decoding output module at last, above-mentioned user's message is sent to train control system.
The present invention is by increasing new communication channel in FDM capacity multiplication type onboard reception device, can receive simultaneously the signal of different modulating standard and different frequency, make the data volume multiplication of its reception, FDM capacity multiplication type responder system of the present invention can further improve and ground transponder between amount of communication data, guaranteed train control system can be safely, reliably, accurately car controlling, further ensured traffic safety, simultaneously greatly simplified existing responder system, made that construction costs is low, construction is simple.
Embodiment two
The invention provides a kind of frequency division two-way capacity multiplication type responder system, as shown in Figure 3, comprise the onboard reception device described in ground transponder and the embodiment one; Wherein above-mentioned ground transponder comprises the former communication channel in the existing ground transponder, and at least one communication channel that increases newly, the described communication channel that increases newly is used for to the required data of onboard reception device transmission car controlling, improve the data capacity of ground transponder, make the amount of communication data multiplication between ground transponder and onboard reception device;
The present invention is by all increasing at least one communication channel newly in ground transponder and the onboard reception device, realized the multiplication of ground transponder data capacity, thereby further make the amount of communication data multiplication between ground transponder and the onboard reception device, thereby guaranteed train control system can be safely, reliably, accurately car controlling, further ensured traffic safety;
In the present invention, onboard reception device and ground transponder in the FDM capacity multiplication type responder system are used, as when only having increased a communication channel A newly in the responser of ground, then also only need increase a communication channel A ＇ newly in the 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 required data of onboard reception device transmission car controlling, each communication channel in the onboard reception device is processed above-mentioned data, sends to train control system again; Be that the data communication device of channel A in the ground transponder is crossed Car antnna and is transferred to channel A ＇ in the onboard reception device, by channel A ＇ to the data of receiving carry out demodulation, decoding is processed, and exports at last train control system.
Further, as shown in Figure 4, the ground transponder in the embodiment of the invention also comprises the frequency synthesis module, is used for the 27.095MHz energy signal of receiving is processed, and exports above-mentioned former communication channel and the needed carrier frequency of communication channel that increases newly; Wherein because former communication channel is the communication channel in the existing responser, the carrier frequency that therefore former communication channel needs is 4.23MHz; And because specifically because the energy of the ground transponder protected of the present invention be energy signal by the 27.095MHz of onboard reception device radiation and provide, therefore 27.095MHz namely is that energy is again standard time clock, thus by calculate can know the communication channel that increases newly can with frequency be 13.54MHz, 9.032MHz, 6.77MHz; Concrete, if when only having a communication channel that increases newly in this ground transponder, the carrier frequency that preferred this communication channel needs is 9.032MHz, this is because 13.5MHz is nearer apart from 27.095MHz, being subject to easily stronger 27.095MHz disturbs, and 6.77MHz is nearer apart from 4.23MHz, then the interval of two interchannels 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 9.032MHz is optimum frequency as can be known.
Further, the communication channel that increases newly in the embodiment of the invention specifically comprises:
Data memory module is used for the data that storage need to be transferred to onboard reception device;
Modulation module is used for the data that will be transferred to onboard reception device and the carrier frequency of described communication channel are carried out modulation treatment;
Signal transmission module is used for being transferred to onboard reception device with described through the signal after the modulation treatment by sending coil;
Concrete, in embodiments of the present invention, modulation module in the communication channel that increases newly adopts phase keying PSK to carry out modulation treatment, and still adopting frequency shift keying fsk to carry out modulation treatment in the former communication channel, the FDM capacity multiplication type ground transponder in the embodiment of the invention adopts the mode of double-standard that the data that are transferred to onboard reception device are carried out modulation treatment like this; And why adopt phase keying PSK to carry out modulation treatment in the communication channel that increases newly, and this is because PSK compares with FSK, ASK, not only have higher noise robustness, and its occupied bandwidth is less, the 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 4 times of ASK; And in PSK, FSK and these 3 kinds of modulation systems of ASK, consider from the ground transponder this respect that the simplest, the single frequency of PSK and ASK, occupied bandwidth are less, the concentration of energy of emission, power consumption minimum.If adopt frequency modulation just to need two frequencies to take larger bandwidth, power consumption is 2 times of PSK; Consider from the mobile unit this respect, the technical risk of realization and cost PSK=FSK, even slightly simpler than FSK, the reason of ASK and FSK forbidding mainly is that antijamming capability is not all right, the application under the 500km/h condition that must look to the future of formulation standard;
Concrete, because the carrier frequency of the communication channel that increases newly is 9.032MHz, and it adopts phase keying PSK to carry out modulation treatment, therefore can improve widely the transfer rate of this communication channel, theoretic maximum transmission rate is 9.032Mbit/s, and owing to be subject in actual applications the restriction of filter level, the transfer rate that signal transmission module in the embodiment of the invention uses is 1.12Mbit/s or 564.48kbit/s, transfer rate than the communication channel in the existing responser is a lot of soon, so raising along with transfer rate, the data volume of this ground transponder transmission also increases exponentially, thereby has realized the multiplication of the amount of communication data between ground transponder and onboard reception device.
Further, FDM capacity multiplication type ground transponder in the embodiment of the invention also comprises the power extraction module and starts control module, wherein the power extraction module is used for extracting the former communication channel electric weight required with the communication channel normal operation that increases newly from the 27.095MHz energy signal of receiving, the startup control module is used for substep and starts above-mentioned former communication channel and the communication channel that increases newly;
Because being the 27.095MHz energy signal from the mobile unit radiation, obtains the required electric weight of ground transponder work among the present invention, and because after having increased communication channel newly, power consumption can increase, make former communication channel cause the delay start of ground transponder because of the energy competition with the communication channel that increases newly, cause not satisfying existing engineering factor, therefore for fear of the generation of the problems referred to above, startup control module among the present invention need to start former communication channel and the communication channel that increases newly step by step, be and start first former communication channel, after energy increases, restart the communication channel that increases newly; Concrete because the communication channel that increases newly adopt low pressure, at a high speed, micro-power device, therefore carry out energy grouping power supply according to the required operating voltage height difference of different circuit devcies, thereby reasonable distribution resource, for example: the communication channel that increases newly of the present invention adopts the PSK phase modulation system just to save energy so this ground transponder of one times than the FSK frequency modulation system of existing communication channel and obtains starting first former communication channel behind the energy, restarts the communication channel that increases newly and can not impact both sides.
Further, the communication channel that increases newly in the embodiment of the invention also comprises filtration module, be used for strengthening the signal attenuation to described former communication channel, mutually crosstalking when stoping interchannel work, specifically " width of cloth-frequently " characteristic curve of the receiving filter by the communication channel that will increase newly is designed to more precipitous " squareness factor " and realizes;
The principle of work of the present invention's FDM capacity required for protection multiplication 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 the ground transponder described electric weight that works by the power extraction module, frequency synthesis module in the ground transponder produces the former communication channel carrier frequency required with the communication channel that increases newly according to the energy signal of above-mentioned 27.095MHz simultaneously, and the startup control module starts step by step two communication channels and independently works, the communication channel that namely starts is first restarted the communication channel that increases newly; Describe as an example of the communication channel that increases newly example: read the data of storing in the data memory module of the communication channel that increases newly, by modulation module the carrier frequency of the data of reading and this communication channel is carried out phase-modulation (PSK) and process the signal after processing to the onboard reception device radiation modulation by the transmission coil of signal transmission module and ground transponder at last.
The present invention is by increasing new communication channel in FDM capacity multiplication type onboard reception device, can receive other data outside original transponder data, make the data volume multiplication of its reception, FDM capacity multiplication type responder system of the present invention can further improve and ground transponder between amount of communication data, guaranteed train control system can be safely, reliably, accurately car controlling, further ensured traffic safety, simultaneously greatly simplified existing responder system, made that construction costs is low, construction is simple.
In a word, to the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. FDM capacity multiplication type onboard reception device is characterized in that described onboard reception device comprises:
Former communication channel in the existing onboard reception device, the frequency that is used for the transmission of reception ground transponder is the fsk signal of 4.23MHz, described signal is processed sending to train control system;
And at least one communication channel that increases newly, the described communication channel that increases newly is used for receiving simultaneously and the equal not identical signal of the modulation classification of described 4.23MHz signal and frequency, described signal is processed, the data after the described processing are sent to train control system.
2. onboard reception device as claimed in claim 1 is characterized in that, the described communication channel that increases newly comprises:
The amplification filtering module is used for that the signal of receiving is carried out amplification filtering and processes, and rejection frequency is fsk signal and other interfering signal of 4.23MHz;
Demodulation module is used for the signal after the amplification filtering processing is carried out demodulation process;
The decoding output module is used for adopting the safe decoding process of two-way that the data that demodulation obtains are deciphered processing, obtains user's message and sends to train control system.
3. onboard reception device as claimed in claim 2 is characterized in that, described demodulation module specifically adopts the PSK demoder to carry out demodulation process.
4. onboard reception device as claimed in claim 2 is characterized in that, described decoding output module specifically comprises:
The first decoding unit is used for independently the data of receiving being deciphered processing;
The second decoding unit is used for synchronously and independently the data of receiving being deciphered processing with described the first decoding unit;
Comparing unit is used for relatively whether the first decoding unit is consistent with two decode results that the second decoding unit obtains, and only just decode results is exported when comparative result is consistent.
5. a FDM capacity multiplication type responder system is characterized in that, described responder system comprises ground transponder and such as each described onboard reception device of claim 1 to 4; Wherein,
Described ground transponder, comprise the former communication channel in the existing ground transponder, and at least one communication channel that increases newly, the described communication channel that increases newly is used for to the required data of onboard reception device transmission car controlling, improve the data capacity of ground transponder, make the amount of communication data multiplication between ground transponder and onboard reception device.
6. responder system as claimed in claim 5, it is characterized in that, described ground transponder also comprises: the frequency synthesis module, be used for the 27.095MHz energy signal of receiving is processed, and export described former communication channel and the needed carrier frequency of communication channel that increases newly.
7. responder system as claimed in claim 5 is characterized in that, the described communication channel that increases newly comprises:
Data memory module is used for the data that storage need to be transferred to onboard reception device;
Modulation module is used for the data that will be transferred to onboard reception device and the carrier frequency of the described communication channel that increases newly are carried out modulation treatment;
Signal transmission module is used for being transferred to described onboard reception device by sending the signal of coil after with modulation treatment.
8. responder system as claimed in claim 7 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 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 is characterized in that, described ground transponder also comprises:
The power extraction module is used for extracting the described former communication channel electric weight required with the communication channel normal operation that increases newly from the 27.095MHz energy signal of receiving;
Start control module, be used for substep and start described former communication channel and the communication channel that increases newly.
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| CN201210526715.1A CN102963394B (en) | 2012-12-10 | 2012-12-10 | FDM capacity multiplica type onboard reception device and responder system |
| CN201510072756.1A CN104670266B (en) | 2012-12-10 | 2012-12-10 | Large Copacity transponder transmission 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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Cited By (1)
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| CN102963394B (en) | 2016-04-13 |
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