CN101722968B - Method for transmitting signal by uninsulated railway and signal transmitter - Google Patents
Method for transmitting signal by uninsulated railway and signal transmitter Download PDFInfo
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- CN101722968B CN101722968B CN2009102215562A CN200910221556A CN101722968B CN 101722968 B CN101722968 B CN 101722968B CN 2009102215562 A CN2009102215562 A CN 2009102215562A CN 200910221556 A CN200910221556 A CN 200910221556A CN 101722968 B CN101722968 B CN 101722968B
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Abstract
The invention relates to the technology of transmitting railway signals, in particular to a uninsulated railway transmitting technology. The method for transmitting signals by the uninsulated railway comprises the steps of: generating carrier encoding information and low frequency encoding information, synthesizing and detecting, and transmitting the signal when the signal is detected to be correct. The invention further provides a signal transmitter consisting of functional moulds of a low frequency encoding circuit, a carrier encoding circuit, a signal synthesizing unit, a detection unit and the like. The invention has the advantages of effectively reducing the volume of the device, improving the mounting way, and meeting the request of on-site occupied area on the premise that technical indexes meet the requirement.
Description
Technical field
The present invention relates to the railway signal transmission technology, relate in particular to a kind of jointless track circuit transmission technology.
Background technology
2000 jointless track circuit technology are on French UM71 (U means general, and M means modulation) jointless track circuit import of technology, production domesticization basis, in conjunction with national conditions, improve system safety, system transmissions performance and technology of dependability redevelopment.The former has had raising than the latter on track circuit transmission security, transmission length, system reliability and combination national conditions develop skill the ratio of performance to price, reduction construction costs.
The UM71 track circuit is the track circuit of the electric insulating of common modulation; It is by transmitter EM under the coding scheme instruction control, produce the frequency-shift signaling of low frequency modulation, through cable lead-through, matching unit TDA and tuned cell BA; Deliver to track; Be transferred to receiving end tuned cell BA again through matching unit, the cable lead-through of receiving end from feed end, signal is delivered among the receptor RE, after receptor carries out the demodulation amplification with modulation signal; Whether the action track relay takies track circuit in order to the reflection train.The low-frequency information of transmitting on the rail is given TVM-300 system through the locomotive coil reception, supplies cab signal, speed monitoring to use.
More than the shortcoming of device is: two kinds of transmitter function have only several kinds of carrier frequency information and low frequency signal, and the alarm free relay is irredundant, and the low frequency frequency accuracy be ± and 0.1Hz, carrier frequency precision be ± 1Hz, the low stability that is unfavorable for the signal transmission of precision.
Summary of the invention
The objective of the invention is to avoid the deficiency of prior art that a kind of method for transmitting signal by uninsulated railway and transmitter are provided; It can export 8 kinds of carrier frequency information; The inner self check that realizes low frequency, carrier frequency and voltage increases alarm relay output, realizes " N+1 " redundancy.Index: low frequency: frequency accuracy is ± 0.03Hz that the carrier frequency precision is ± 0.15Hz.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is: a kind of signaling method includes following steps:
Step 1: set initial code, produce carrier frequency coded message and low frequency coded message through carrier frequency encode circuit and low frequency encode circuit;
Step 2: carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, signal synthesis unit output frequency-shift signaling and low frequency signal;
Step 3: frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
After frequency-shift signaling detected correctly, detecting unit produced safety door drives signal, the frequency-shift signaling that produces in the said step 2 was amplified through power amplifier output to alarm relay; Simultaneously, power amplifier produces the power amplifier voltage sampled signal, and the power amplifier voltage sampled signal detects through detecting unit;
After power amplifier voltage sampled signal and low frequency signal detection correctly, detecting unit output safety AND circuit drive signal outputs to alarm relay with frequency-shift signaling;
If frequency-shift signaling and low frequency signal and a power amplifier voltage sampled signal while or an arbitrary signal detection mistake, then danger signal sends.
Step 4: frequency-shift signaling is exported by alarm relay safety.
Further, detection may further comprise the steps to frequency-shift signaling at the detecting unit described in the step 3:
1) the carrier frequency coded message that produces according to the carrier frequency encode circuit produces the filtering clock through clock generation circuit;
2), frequency-shift signaling is carried out bandpass filtering and LPF through the demodulation by filter circuit according to the filtering clock;
3) frequency-shift signaling through bandpass filtering and LPF is carried out shaping;
4) frequency-shift signaling through shaping produces safety door drives signal through the frequency checking circuit.
The present invention also provides a kind of signal by uninsulated railway transmitter; Comprise power amplifier and power-supply system; It is characterized in that, also comprise low frequency encode circuit, carrier frequency encode circuit, signal synthesis unit, detecting unit, safety door circuit, safe AND circuit and alarm relay
Said low frequency encode circuit and carrier frequency encode circuit produce low frequency coded message or carrier frequency coded message according to encoding condition;
Carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, signal synthesis unit output frequency-shift signaling and low frequency signal;
Frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
After frequency-shift signaling detected correctly, detecting unit produced safety door drives signal, and the frequency-shift signaling that signal synthesis unit is exported outputs to alarm relay through the power amplifier amplification; Simultaneously, power amplifier produces the power amplifier voltage sampled signal, and the power amplifier voltage sampled signal detects through detecting unit;
After power amplifier voltage sampled signal and low frequency signal detection correctly, detecting unit output safety AND circuit drive signal outputs to alarm relay with frequency-shift signaling;
If frequency-shift signaling and low frequency signal and a power amplifier voltage sampled signal while or an arbitrary signal detection mistake, then danger signal sends;
The mouth of low frequency encode circuit is connected with the input end of signal synthesis unit and detecting unit, and the mouth of carrier frequency encode circuit also is connected with the input end of signal synthesis unit and detecting unit; A mouth of signal synthesis unit is connected with the input end of detecting unit, and another mouth of signal synthesis unit is connected with the input end of power amplifier through the safety door circuit, is connected with the input end of detecting unit again simultaneously; The mouth of detecting unit is connected with the input end of safe AND circuit, and the mouth of detecting unit is connected with the input end of safety door circuit again; The mouth of power amplifier is connected with alarm relay, and the mouth of power amplifier is connected with the input end of detecting unit again; The mouth of safe AND circuit is connected with alarm relay.
Described carrier frequency encode circuit can select to send 8 kinds of frequency-shift signalings, is respectively 1701.4 Hz, 1698.7 Hz, 2001.4Hz, 1998.7Hz, 2301.4 Hz, 2298.7 Hz, 2601.4 Hz, 2598.7 Hz.
Described low frequency encode circuit can select to send 18 kinds of low frequency signals, as: 10.3Hz, 11.4 Hz, 12.5 Hz, 13.6 Hz, 27.9 Hz, 29 Hz etc.
Further; Described signal synthesis unit includes the D/A modular converter; Produce the carrier frequency generation module of frequency-shift signaling according to the low frequency generation module of low frequency coding generation low frequency signal with according to the carrier frequency coded message; The mouth of low frequency generation module is connected with the carrier frequency generation module, and the carrier frequency generation module is through D/A modular converter output frequency-shift signaling.
Further, described low frequency generation module is a frequency divider, and frequency divider output low frequency signal is to detecting unit; The mouth of frequency divider is connected with described carrier frequency generation module; The carrier frequency generation module includes phase accumulator and wave memorizer; The mouth of phase accumulator is connected with the input end of wave memorizer; The mouth of wave memorizer is connected with the D/A modular converter again, and the D/A modular converter is a D/A converter, and D/A converter output frequency-shift signaling is to detecting unit and safety door.
Further, described detecting unit by the low frequency receiving element that is used to receive low frequency signal be used to receive the shift frequency receiving element of frequency-shift signaling, and the power amplifier voltage sampling receiving element that is used to receive the power amplifier voltage sampled signal is formed.
Further, described low frequency receiving element comprises the counting machine and first driving circuit that is used to receive low frequency signal, and counter output is connected with the input end of first driving circuit, the first driving circuit output safety AND circuit drive signal.
Further, described shift frequency receiving element comprises demodulation by filter circuit and the frequency checking circuit that is used to receive frequency-shift signaling, and the mouth of demodulation by filter circuit is connected with the input end of frequency checking circuit, frequency checking circuit output safety gate circuit drive signal.
Further; Described demodulation by filter circuit also is connected with the clock generation circuit that is used to produce the filtering clock; Clock generation circuit is confirmed shift frequency information generating filtering clock through the carrier frequency coded message; The demodulation by filter circuit carries out cooresponding bandpass filtering and LPF and shaping thereof according to the filtering clock to frequency-shift signaling.
Further; Said power amplifier voltage sampling receiving element comprises voltage check circuit, rectifying circuit, A/D modular converter and second driving circuit that is used to receive the power amplifier voltage sampled signal; The mouth of voltage check circuit is connected with the input end of rectifying circuit; Rectification circuit output end is connected with A/D modular converter input end, and the mouth of A/D modular converter is connected with the input end of second driving circuit, the mouth output safety AND circuit drive signal of second driving circuit.
Described in the present invention low frequency encode circuit and carrier frequency encode circuit preferably adopt photoelectric isolating circuit.Described power-supply system preferably adopts 24V to convert direct current ± 5V, direct current ± 12V DCDC24D5, DCDC24D12 power module into.Described demodulation by filter circuit preferably adopts the mouth of field programmable gate array (FPGA) according to the carrier frequency encode circuit, confirms that the carrier frequency coded message produces the filtering clock.
The invention has the beneficial effects as follows: adopt the inventive method and device can export 8 kinds of carrier frequency information, the inner self check that realizes low frequency, carrier frequency and voltage increases alarm relay output, realizes " N+1 " redundancy.Index: low frequency: frequency accuracy is ± 0.03Hz that the carrier frequency precision is ± 0.15Hz.It effectively reduces equipment volume simultaneously, improves mounting means, under the prerequisite that technical index meets the demands, satisfies the requirement of on-the-spot station area.
Description of drawings
Fig. 1 is the method step scheme drawing of the embodiment of the invention 1;
Fig. 2 is the method step scheme drawing of the embodiment of the invention 2;
Fig. 3 is the method step scheme drawing of the embodiment of the invention 3;
Fig. 4 is a theory structure scheme drawing of the present invention;
Fig. 5 signal synthesis unit structural representation of the present invention;
Fig. 6 detecting unit structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Embodiment 1: see Fig. 1, a kind of method for transmitting signal by uninsulated railway includes following steps:
Step 101: set initial code, produce carrier frequency coded message and low frequency coded message through carrier frequency encode circuit and low frequency encode circuit;
Step 102: carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, signal synthesis unit output frequency-shift signaling and low frequency signal;
Step 103: frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
Step 104: after frequency-shift signaling detected correctly, detecting unit produced safety door drives signal, the frequency-shift signaling that produces in the said step 2 was amplified through power amplifier output to alarm relay;
Step 105: power amplifier produces the power amplifier voltage sampled signal, and the power amplifier voltage sampled signal is detected through detecting unit;
Step 106: after power amplifier voltage sampled signal and low frequency signal detection correctly, detecting unit output safety AND circuit drive signal outputs to alarm relay with frequency-shift signaling;
Step 107: frequency-shift signaling is exported by alarm relay safety.
Embodiment 2: a kind of method for transmitting signal by uninsulated railway includes following steps:
Step 101:, produce carrier frequency coded message and low frequency coded message through carrier frequency encode circuit and low frequency encode circuit according to encoding condition;
Step 102: carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, output frequency-shift signaling and low frequency signal;
Step 103: frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
Step 104: frequency-shift signaling and low frequency signal detect simultaneously wrong danger signal and send.
Embodiment 3: identical with embodiment 1, wherein said detecting unit detects further comprising the steps of to frequency-shift signaling:
Step 1011: the carrier frequency coded message according to the carrier frequency encode circuit produces produces the filtering clock through clock generation circuit;
Step 1012:, frequency-shift signaling is carried out bandpass filtering and LPF through the demodulation by filter circuit according to the filtering clock;
Step 1013: the frequency-shift signaling that carries out bandpass filtering and LPF carries out shaping;
Step 1014: the frequency-shift signaling through shaping produces safety door drives signal through the frequency checking circuit.
Embodiment 4: the present invention also provides a kind of signal by uninsulated railway transmitter; Include power amplifier 1; Power-supply system 2; Also include according to encoding condition, confirm low frequency coded message or carrier frequency coded message low frequency encode circuit 3 or carrier frequency encode circuit 4, be used to carry out signal synthetic and output low frequency signal and the signal synthesis unit 5 of frequency-shift signaling, the detecting unit 6 that is used to detect low frequency signal and frequency-shift signaling, safety door circuit 7, safe AND circuit 8 and the alarm relay 9 of shift frequency sinusoidal waveform; The mouth of low frequency encode circuit 4 is connected with the input end of signal synthesis unit 5 with detecting unit 6, and the mouth of carrier frequency encode circuit 4 also is connected with the input end of signal synthesis unit 5 with detecting unit 6; A mouth of signal synthesis unit 5 is connected with the input end of detecting unit 6, and another mouth of signal synthesis unit 5 is connected through the input end of safety door circuit 7 with power amplifier 1, is connected with the input end of detecting unit 6 again simultaneously; The mouth of detecting unit 6 is connected with the input end of safe AND circuit 8, and the mouth of detecting unit 6 is connected with the input end of safety door circuit 7 again; The mouth of power amplifier 1 is connected with alarm relay node 91, and the mouth of power amplifier 1 is connected with the input end of detecting unit 6 again; The mouth of safe AND circuit 8 is connected with alarm relay 9.
Described signal synthesis unit 5 include according to low frequency coding produce low frequency signal the low frequency generation module, produce the carrier frequency generation module and the D/A modular converter of frequency-shift signaling according to the carrier frequency coded message, the low frequency generation module with information amplifier output low frequency signal to detecting unit and safety door; The mouth of low frequency generation module is connected with the carrier frequency generation module, and the carrier frequency generation module is through D/A modular converter output frequency-shift signaling.Described low frequency generation module is a frequency divider 51; The mouth of frequency divider 51 is connected with described carrier frequency generation module; The carrier frequency generation module includes phase accumulator 52 and wave memorizer 53, and the mouth of phase accumulator 52 is connected with the input end of wave memorizer 53, and the mouth of wave memorizer 53 is connected with D/A modular converter 54 again; D/A modular converter 54 is a D/A converter, and D/A converter output frequency-shift signaling is to detecting unit and safety door.
Described detecting unit 6 comprises the low frequency receiving element that is used to receive low frequency signal; Be used to receive the shift frequency receiving element of frequency-shift signaling; Be used to receive the power amplifier voltage sampling receiving element of power amplifier voltage sampled signal.Described low frequency receiving element comprises the counting machine 61 and first driving circuit 62 that is used to receive low frequency signal, and counting machine 61 mouths are connected with the input end of first driving circuit 62, first driving circuit, 62 output safety AND circuit drive signals.Described shift frequency receiving element comprises the demodulation by filter circuit 63 and frequency checking circuit 64 that is used to receive frequency-shift signaling; The mouth of demodulation by filter circuit 63 is connected with the input end of frequency checking circuit 64, frequency checking circuit 64 output safety gate circuit drive signals.Described demodulation by filter circuit 63 also is connected with the clock generation circuit 65 that is used to produce the filtering clock; Clock generation circuit 65 confirms that through the carrier frequency encoding condition frequency-shift signaling produces the filtering clock; The demodulation by filter circuit carries out cooresponding bandpass filtering and LPF and shaping thereof according to the filtering clock to frequency-shift signaling.Said power amplifier voltage sampling receiving element comprises voltage check circuit 66, rectifying circuit 67, A/D modular converter 68 and second driving circuit 69 that is used to receive the power amplifier voltage sampled signal; The mouth of voltage check circuit 66 is connected with the input end of rectifying circuit 67; Rectifying circuit 67 mouths are connected with A/D modular converter 68 input ends; The mouth of A/D modular converter 68 is connected with the input end of second driving circuit 69, mouth output safety AND circuit 7 drive signals of second driving circuit 69.
Combining device principle of work of the present invention is:
1) transmitter start energising direct current 24V, power-supply system 2 converts direct current ± 5V, direct current ± 12V into, for each module provides power supply;
2) low frequency encode circuit 3 produces the identical low frequency coded message of cooresponding two-way according to the external encode condition, and one the tunnel is connected with the signal synthesis unit 5 that is used for synthetic shift frequency sinusoidal waveform; Another road is connected with the input end of the detecting unit that is used for detection signal 6;
3) carrier frequency encode circuit 4 produces the identical carrier frequency coded message of cooresponding two-way according to the external encode condition, and one the tunnel is connected with signal synthesis unit 5, and another road is connected with the input end of detecting unit 6.
4) be used for the signal synthesis unit 5 of synthetic shift frequency sinusoidal waveform, produce frequency-shift signaling and low frequency signal according to low frequency coding and carrier frequency coding.Frequency-shift signaling is divided into the identical output of two-way again, and one tunnel output is connected with the input end of detecting unit 6, and another mouth is connected through the input end of safety door circuit 7 with power amplifier 1; Low frequency signal output is connected with the input end of detecting unit 6.
5) detecting unit 6; According to the low frequency coding low frequency signal is detected; Mouth attachment security AND circuit drive signal generation unit I, after the detection low frequency is correct, safe AND circuit drive signal generation unit 1 output one tunnel safety AND circuit drive signal.Simultaneously, produce the filtering clock of the bandpass filter that is used for demodulating unit according to the carrier frequency coding.When detecting demodulating unit in low frequency when output, output safety gate circuit drive signal, arranged.Simultaneously, 6 pairs of merits of detecting unit go out sampled signal detect correct after, safe AND circuit drive signal generation unit 2 outputs one tunnel safety AND circuit drive signal.
6) safety door circuit, behind the output drive signal, safety door is opened after detecting unit is correct, and frequency-shift signaling passes through.
7) signal of 1 pair of signal synthesis unit of power amplifier amplifies output; Mouth is connected with alarm relay node 91; Another road mouth of power amplifier 1 is connected with the input end of rectifying circuit 657 again; Rectifying circuit 67 mouths are connected with A/D converter 68 input ends; The mouth of A/D converter 68 and safe AND circuit the drive signal generation unit i.e. input end of second driving circuit 69 are connected the mouth output safety AND circuit drive signal of safe AND circuit drive signal generation unit.
8) mouth of safe AND circuit 8 is connected with alarm relay 9, when simultaneously the input of two-way safety AND circuit drive signal being arranged, and the output alarm relay signal.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for transmitting signal by uninsulated railway is characterized in that, includes following steps:
Step 1: set initial code, produce carrier frequency coded message and low frequency coded message through carrier frequency encode circuit and low frequency encode circuit;
Step 2: carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, signal synthesis unit output frequency-shift signaling and low frequency signal;
Step 3: frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
After frequency-shift signaling detected correctly, detecting unit produced safety door drives signal, the frequency-shift signaling that produces in the said step 2 was amplified through power amplifier output to alarm relay; Simultaneously, power amplifier produces the power amplifier voltage sampled signal, and the power amplifier voltage sampled signal detects through detecting unit;
After power amplifier voltage sampled signal and low frequency signal detection correctly, detecting unit output safety AND circuit drive signal outputs to alarm relay with frequency-shift signaling;
If frequency-shift signaling and low frequency signal and a power amplifier voltage sampled signal while or an arbitrary signal detection mistake, then danger signal sends;
Step 4: frequency-shift signaling is exported by alarm relay safety.
2. method for transmitting signal by uninsulated railway as claimed in claim 1 is characterized in that, at the detecting unit described in the step 3 frequency-shift signaling is detected may further comprise the steps:
Carrier frequency coded message according to the carrier frequency encode circuit produces produces the filtering clock through clock generation circuit;
1), frequency-shift signaling is carried out bandpass filtering and LPF through the demodulation by filter circuit according to the filtering clock;
2) frequency-shift signaling through bandpass filtering and LPF is carried out shaping;
3) frequency-shift signaling through shaping produces safety door drives signal through the frequency checking circuit.
3. a signal by uninsulated railway transmitter comprises power amplifier and power-supply system, it is characterized in that, also comprises low frequency encode circuit, carrier frequency encode circuit, signal synthesis unit, detecting unit, safety door circuit, safe AND circuit and alarm relay,
Said low frequency encode circuit and carrier frequency encode circuit produce low frequency coded message or carrier frequency coded message according to encoding condition;
Carrier frequency coded message and low frequency coded message is synthetic through the signal that signal synthesis unit carries out the shift frequency sinusoidal waveform, signal synthesis unit output frequency-shift signaling and low frequency signal;
Frequency-shift signaling and low frequency signal are detected according to carrier frequency coded message and low frequency coded message through the detecting unit that is used for detection signal;
After frequency-shift signaling detected correctly, detecting unit produced safety door drives signal, and the frequency-shift signaling that signal synthesis unit is exported outputs to alarm relay through the power amplifier amplification; Simultaneously, power amplifier produces the power amplifier voltage sampled signal, and the power amplifier voltage sampled signal detects through detecting unit;
After power amplifier voltage sampled signal and low frequency signal detection correctly, detecting unit output safety AND circuit drive signal outputs to alarm relay with frequency-shift signaling;
If frequency-shift signaling and low frequency signal and a power amplifier voltage sampled signal while or an arbitrary signal detection mistake, then danger signal sends;
The mouth of low frequency encode circuit is connected with the input end of signal synthesis unit and detecting unit, and the mouth of carrier frequency encode circuit also is connected with the input end of signal synthesis unit and detecting unit; A mouth of signal synthesis unit is connected with the input end of detecting unit, and another mouth of signal synthesis unit is connected with the input end of power amplifier through the safety door circuit, is connected with the input end of detecting unit again simultaneously; The mouth of detecting unit is connected with the input end of safe AND circuit, and the mouth of detecting unit is connected with the input end of safety door circuit again; The mouth of power amplifier is connected with alarm relay, and the mouth of power amplifier is connected with the input end of detecting unit again; The mouth of safe AND circuit is connected with alarm relay.
4. signal by uninsulated railway transmitter as claimed in claim 3; It is characterized in that; Described signal synthesis unit includes the D/A modular converter; Produce the low frequency generation module of low frequency signal and produce the carrier frequency generation module of frequency-shift signaling according to the carrier frequency coded message according to low frequency coding, the mouth of said low frequency generation module is connected with the carrier frequency generation module, and the carrier frequency generation module passes through the D/A modular converter and exports frequency-shift signaling.
5. signal by uninsulated railway transmitter as claimed in claim 4 is characterized in that, described low frequency generation module is a frequency divider, and frequency divider output low frequency signal is to detecting unit; The mouth of frequency divider is connected with described carrier frequency generation module; The carrier frequency generation module includes phase accumulator and wave memorizer; The mouth of phase accumulator is connected with the input end of wave memorizer; The mouth of wave memorizer is connected with the D/A modular converter again, and the D/A modular converter is a D/A converter, and D/A converter output frequency-shift signaling is to detecting unit.
6. signal by uninsulated railway transmitter as claimed in claim 3; It is characterized in that; Described detecting unit by the low frequency receiving element that is used to receive low frequency signal be used to receive the shift frequency receiving element of frequency-shift signaling, and the power amplifier voltage sampling receiving element that is used to receive the power amplifier voltage sampled signal is formed.
7. signal by uninsulated railway transmitter as claimed in claim 6; It is characterized in that; Described low frequency receiving element comprises first driving circuit and the counting machine that is used to receive low frequency signal; Counter output is connected with the input end of first driving circuit, the first driving circuit output safety AND circuit drive signal.
8. signal by uninsulated railway transmitter as claimed in claim 6; It is characterized in that; Described shift frequency receiving element comprises frequency checking circuit and the demodulation by filter circuit that is used to receive frequency-shift signaling; The mouth of demodulation by filter circuit is connected with the input end of frequency checking circuit, frequency checking circuit output safety gate circuit drive signal.
9. signal by uninsulated railway transmitter as claimed in claim 8; It is characterized in that; Described demodulation by filter circuit also is connected with the clock generation circuit that is used to produce the filtering clock; Clock generation circuit is confirmed shift frequency information generating filtering clock through the carrier frequency coded message, and the demodulation by filter circuit carries out cooresponding bandpass filtering and LPF and shaping thereof according to the filtering clock to frequency-shift signaling.
10. signal by uninsulated railway transmitter as claimed in claim 7; It is characterized in that; Said power amplifier voltage sampling receiving element comprises voltage check circuit, rectifying circuit, A/D modular converter and second driving circuit that is used to receive the power amplifier voltage sampled signal; The mouth of voltage check circuit is connected with the input end of rectifying circuit; Rectification circuit output end is connected with A/D modular converter input end, and the mouth of A/D modular converter is connected with the input end of second driving circuit, the mouth output safety AND circuit drive signal of second driving circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102215562A CN101722968B (en) | 2009-11-20 | 2009-11-20 | Method for transmitting signal by uninsulated railway and signal transmitter |
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| CN2009102215562A CN101722968B (en) | 2009-11-20 | 2009-11-20 | Method for transmitting signal by uninsulated railway and signal transmitter |
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| CN101722968B true CN101722968B (en) | 2012-05-30 |
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| DE102011083122A1 (en) | 2011-09-21 | 2013-03-21 | Siemens Aktiengesellschaft | Method for operating a vehicle-side receiving device of a train control system and vehicle-side receiving device |
| CN104460581B (en) * | 2014-09-29 | 2017-06-09 | 株洲南车时代电气股份有限公司 | A kind of track signal generating means and method |
| CN105799735B (en) * | 2016-05-19 | 2017-09-15 | 北京全路通信信号研究设计院集团有限公司 | Track circuit transmitter and fault guiding safety implementation method |
| CN108657224B (en) * | 2018-05-08 | 2020-12-22 | 北京全路通信信号研究设计院集团有限公司 | Signal generator, signal generating method, signal generating equipment and computer program product |
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| CB03 | Change of inventor or designer information |
Inventor after: Sun Xiaoli Inventor after: Kou Haijun Inventor after: Chen Ye Inventor after: Tan Aiqing Inventor after: Pan Guangming Inventor after: Yu Xuesong Inventor before: Sun Xiaoli |
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| COR | Change of bibliographic data |