CN104735711B - Novel GSM-R leaks cable detection device - Google Patents

Novel GSM-R leaks cable detection device Download PDF

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Publication number
CN104735711B
CN104735711B CN201510136196.1A CN201510136196A CN104735711B CN 104735711 B CN104735711 B CN 104735711B CN 201510136196 A CN201510136196 A CN 201510136196A CN 104735711 B CN104735711 B CN 104735711B
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China
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signal
detection
receiving
coupler
transmission
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CN201510136196.1A
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Chinese (zh)
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CN104735711A (en
Inventor
薛红喜
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雷功书
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition

Abstract

The present invention discloses a kind of novel GSM R leakages cable detection device, including:Signal transmitting and receiving unit, detection signal element and three-dB coupler are both provided between the adjacent leakage cable, a coupling network is between three-dB coupler and signal transmitting and receiving unit;Signal transmitting and receiving unit further comprises that signal receiving end, signal transmitting terminal and antenna end, the antenna end of the signal transmitting and receiving unit are connected by the 4th transmission end of transmission line and three-dB coupler;Detection signal element further comprises detecting transmitting terminal, detection receiving terminal, PN code generators, PN code processors and the carrier oscillator for generating specific frequency carrier wave;PN code generators are used to generate PN codings, and the detection transmitting terminal will form modulated detection signal and be sent to coupling network in PN coded modulations to carrier wave, and several PN codings for leaking the corresponding PN code generators generation of cable are orthogonal each other.The carrier wave that the present invention only uses single-frequency adds PN codes, is not interfere with each other between difference leakage cable, greatly reduces complexity and further increase the reliability and detection accuracy of system.

Description

Novel GSM-R leaks cable detection device

Technical field

The present invention relates to a kind of novel GSM-R to leak cable detection device, belongs to railway signal detection field.

Background technology

As the railway GSM-R network operations are open-minded, by equipment quality problem, project installation problem, part leakage cable institute Connector, wire jumper, the antenna of connection will initially enter the failure multiple phase.But actual maintenance is relatively difficult, such as long distance tunnel, The limitation of the factors such as window time, passive type routine inspection mode, some failures are difficult to be found in time.Therefore to leaky cable and day The real-time monitoring of feeder system is completely necessary.

Therefore, in Railroad Communication System, communication system needs high stability, be to leakage in order to ensure this point Cable is measured in real time, to monitor whether any moment leakage cable works normally.In traditional detection method, leakage cable is every one section A detection device can be put, leakage cable is monitored in real time, whether detection leakage cable has damage.In order to avoid adjacent leakage cable it Between signal interfere with each other, usually detected using the carrier signal of different frequency on adjacent leakage cable, and multi-frequency carrier wave Communication but greatly increase the complexity of whole system, as shown in Fig. 1.

Invention content

The present invention provides a kind of novel GSM-R leakages cable detection device, this novel GSM-R leakages cable detection device only uses single The carrier wave of frequency adds PN codes, is not interfere with each other between difference leakage cable, greatly reduces complexity and further increase the reliable of system Property and detection accuracy.

In order to achieve the above objectives, the technical solution adopted by the present invention is:A kind of novel GSM-R leakages cable detection device, including Several concatenated leakage cables, including:Signal transmitting and receiving unit, detection signal element and 3dB are both provided between the adjacent leakage cable Coupler, adjacent leakage cable are connected respectively to the first, second transmission end of three-dB coupler, a coupling network be located at three-dB coupler with Between signal transmitting and receiving unit;

The three-dB coupler is used to receive the digital signal for carrying out natural leak cable, modulation feedback detection signal, and sends and come from The digital signal of coupling network, modulated detection signal, the modulation detection of the coupling network difference autonomous test signal unit in future Signal, signal transmitting and receiving unit digital data transmission to third transmission end, the 4th transmission end;

The signal transmitting and receiving unit further comprises signal receiving end, signal transmitting terminal and antenna end, the signal transmitting and receiving The antenna end of unit is connected by the 4th transmission end of transmission line and three-dB coupler, and the signal receiving end, which receives, comes from base station Digital signal, signal transmitting terminal the digital signal from signal receiving end is amplified to be formed amplification after digital signal, institute State antenna end gives three-dB coupler the 4th transmission end digital signal after amplification by transmission line;

The detection signal element further comprises detecting transmitting terminal, detection receiving terminal, PN code generators, PN code processors With the carrier oscillator for generating specific frequency carrier wave, the PN code generators and carrier oscillator are connected to detection transmitting End, the PN code processors are connected to detection receiving terminal, and the detection transmitting terminal, detection receiving terminal are connected to three-dB coupler Third transmission end;

The PN code generators will be formed for generating PN codings, the detection transmitting terminal in PN coded modulations to carrier wave Modulated detection signal is simultaneously sent to coupling network, and the detection receiving terminal is used to modulate the PN codes in feedback detection signal from carrier wave Upper to demodulate, the PN code processors judge the damaged condition of leakage cable according to the lower PN codes of demodulation;Several leakage cables correspond to PN code generators generate PN coding it is orthogonal each other.

Further improved technology scheme is as follows in above-mentioned technical proposal:

In said program, the frequency of the carrier oscillator is 1GHz or 2GHz.

Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art:

The novel GSM-R of the present invention leaks cable detection device, is detected not using a variety of different frequencies with technology before Together, the carrier wave for only using single-frequency here adds PN codes, has orthogonality, single-frequency carrier wave system between the PN codes of difference leakage cable The complexity of system is more much lower than the complexity of multiple frequency carriers system, and reliability and the detection for further improving system are accurate Property.

Description of the drawings

Attached drawing 1 is that this existing GSM-R leaks cable structure of the detecting device schematic diagram;

Attached drawing 2 is that the novel GSM-R of the present invention leaks cable structure of the detecting device schematic diagram.

In the figures above:1, cable is leaked;2, signal transmitting and receiving unit;3, signal element is detected;4, three-dB coupler;5, it second passes Defeated end;6, third transmission end;7, signal receiving end;8, signal transmitting terminal;9, antenna end;10, transmitting terminal is detected;11, detection connects Receiving end;12, PN code generators;13, PN code processors;14, carrier oscillator;15, coupling network.

Specific implementation mode

The invention will be further described with reference to the accompanying drawings and embodiments:

Embodiment 1:A kind of novel GSM-R leakages cable detection device, including several concatenated leakage cables 1, it is characterised in that:Packet It includes:Signal transmitting and receiving unit 2, detection signal element 3 and three-dB coupler 4, adjacent leakage cable are both provided between the adjacent leakage cable 1 It is connected respectively to the first, second transmission end 5,6 of three-dB coupler 4, a coupling network 15 is located at three-dB coupler 4 and signal transmitting and receiving Between unit 2;

The three-dB coupler 4 is used to receive the digital signal for carrying out natural leak cable, modulation feedback detection signal, and sends Digital signal, modulated detection signal from coupling network 15, the coupling network 15 distinguish the tune of autonomous test signal unit in future 3 System detection signal, signal transmitting and receiving unit 2 digital data transmission to third transmission end, the 4th transmission end;

The signal transmitting and receiving unit 2 further comprises signal receiving end 7, signal transmitting terminal 8 and antenna end 9, the signal The antenna end 9 of Transmit-Receive Unit 2 is connect by transmission line with the 4th transmission end of three-dB coupler 4, and the signal receiving end 7 receives Digital signal from base station, signal transmitting terminal 8 digital signal from signal receiving end 7 is amplified to be formed amplification after number Word signal, digital signal gives three-dB coupler 4 the 4th transmission end by transmission line after the antenna end 9 will amplify;

The detection signal element 3 further comprises detecting transmitting terminal 10, detection receiving terminal 11, PN code generators 12, PN Code processor 13 and carrier oscillator 14 for generating specific frequency carrier wave, the PN code generators 12 and carrier oscillator 14 It is connected to detection transmitting terminal 10, the PN code processors 13 are connected to detection receiving terminal 11, and the detection transmitting terminal 10, detection connect Receiving end 11 is connected to the third transmission end of three-dB coupler 4;

For the PN code generators 12 for generating PN codings, the detection transmitting terminal 10 will be in PN coded modulations to carrier wave It forms modulated detection signal and is sent to coupling network 15, the detection receiving terminal 11 is used to modulate the PN in feedback detection signal Code is demodulated from carrier wave, and the PN code processors 13 judge the damaged condition of leakage cable according to the lower PN codes of demodulation;Several institutes It is orthogonal each other to state the PN codings that leakage 1 corresponding PN code generators 12 of cable generate.The frequency of the carrier oscillator 14 is 1GHz。

Embodiment 2:A kind of novel GSM-R leakages cable detection device, including several concatenated leakage cables 1, it is characterised in that:Packet It includes:Signal transmitting and receiving unit 2, detection signal element 3 and three-dB coupler 4, adjacent leakage cable are both provided between the adjacent leakage cable 1 It is connected respectively to the first, second transmission end 5,6 of three-dB coupler 4, a coupling network 15 is located at three-dB coupler 4 and signal transmitting and receiving Between unit 2;

The three-dB coupler 4 is used to receive the digital signal for carrying out natural leak cable, modulation feedback detection signal, and sends Digital signal, modulated detection signal from coupling network 15, the coupling network 15 distinguish the tune of autonomous test signal unit in future 3 System detection signal, signal transmitting and receiving unit 2 digital data transmission to third transmission end, the 4th transmission end;

The signal transmitting and receiving unit 2 further comprises signal receiving end 7, signal transmitting terminal 8 and antenna end 9, the signal The antenna end 9 of Transmit-Receive Unit 2 is connect by transmission line with the 4th transmission end of three-dB coupler 4, and the signal receiving end 7 receives Digital signal from base station, signal transmitting terminal 8 digital signal from signal receiving end 7 is amplified to be formed amplification after number Word signal, digital signal gives three-dB coupler 4 the 4th transmission end by transmission line after the antenna end 9 will amplify;

The detection signal element 3 further comprises detecting transmitting terminal 10, detection receiving terminal 11, PN code generators 12, PN Code processor 13 and carrier oscillator 14 for generating specific frequency carrier wave, the PN code generators 12 and carrier oscillator 14 It is connected to detection transmitting terminal 10, the PN code processors 13 are connected to detection receiving terminal 11, and the detection transmitting terminal 10, detection connect Receiving end 11 is connected to the third transmission end of three-dB coupler 4;

For the PN code generators 12 for generating PN codings, the detection transmitting terminal 10 will be in PN coded modulations to carrier wave It forms modulated detection signal and is sent to coupling network 15, the detection receiving terminal 11 is used to modulate the PN in feedback detection signal Code is demodulated from carrier wave, and the PN code processors 13 judge the damaged condition of leakage cable according to the lower PN codes of demodulation;Several institutes It is orthogonal each other to state the PN codings that leakage 1 corresponding PN code generators 12 of cable generate.The frequency of the carrier oscillator 14 is 2GHz。

When leaking cable detection device using above-mentioned novel GSM-R, examined using a variety of different frequencies with technology before Difference is surveyed, the carrier wave for only using single-frequency here adds PN codes, between the PN codes of difference leakage cables there is orthogonality, single-frequency to carry The complexity of wave system system is more much lower than the complexity of multiple frequency carriers system, further improves reliability and the detection of system Accuracy.

The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.

Claims (2)

1. a kind of novel GSM-R leaks cable detection device, including several concatenated leakage cables(1), it is characterised in that:Including:It is adjacent The leakage cable(1)Between be both provided with signal transmitting and receiving unit(2), detection signal element(3)And three-dB coupler(4), adjacent leakage cable It is connected respectively to three-dB coupler(4)The first, second transmission end(5、6), a coupling network(15)Positioned at three-dB coupler(4)With Signal transmitting and receiving unit(2)Between;
The three-dB coupler(4)For receiving the digital signal for carrying out natural leak cable, modulation feedback detects signal, and sends and come from Coupling network(15)Digital signal, modulated detection signal, the coupling network(15)Autonomous test signal unit in future respectively(3) Modulated detection signal, signal transmitting and receiving unit(2)Digital data transmission to third transmission end, the 4th transmission end;
The signal transmitting and receiving unit(2)Further comprise signal receiving end(7), signal transmitting terminal(8)And antenna end(9), described Signal transmitting and receiving unit(2)Antenna end(9)Pass through transmission line and three-dB coupler(4)The connection of the 4th transmission end, the signal connects Receiving end(7)Receive the digital signal from base station, signal transmitting terminal(8)Signal receiving end will be come from(7)Digital signal carry out Amplification forms digital signal after amplification, the antenna end(9)By digital signal after amplification by transmission line to three-dB coupler (4)4th transmission end;
The detection signal element(3)Further comprise detecting transmitting terminal(10), detection receiving terminal(11), PN code generators (12), PN code processors(13)With the carrier oscillator for generating specific frequency carrier wave(14), the PN code generators(12) And carrier oscillator(14)It is connected to detection transmitting terminal(10), the PN code processors(13)It is connected to detection receiving terminal(11), The detection transmitting terminal(10), detection receiving terminal(11)It is connected to three-dB coupler(4)Third transmission end;
The PN code generators(12)For generating PN codings, add PN codes, the detection transmitting using the carrier wave of single-frequency End(10)Modulated detection signal will be formed in PN coded modulations to carrier wave and be sent to coupling network(15), the detection receiving terminal (11)It is demodulated from carrier wave for the PN codes in detection signal to be fed back in modulation, the PN code processors(13)According to demodulation Lower PN codes judge the damaged condition of leakage cable;Several leakage cables(1)Corresponding PN code generators(12)The PN of generation encodes that This is mutually orthogonal.
2. novel GSM-R according to claim 1 leaks cable detection device, it is characterised in that:The carrier oscillator(14) Frequency be 1GHz or 2GHz.
CN201510136196.1A 2015-03-26 2015-03-26 Novel GSM-R leaks cable detection device CN104735711B (en)

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Application Number Priority Date Filing Date Title
CN201510136196.1A CN104735711B (en) 2015-03-26 2015-03-26 Novel GSM-R leaks cable detection device

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1758565A (en) * 2005-10-21 2006-04-12 上海欣民通信技术有限公司 Wide-band multi-system path connecting platform for mobile communication system
CN1808508A (en) * 2006-02-17 2006-07-26 南京泰通科技有限公司 Leakage cable working status monitoring system and its monitoring method
CN201174772Y (en) * 2008-02-21 2008-12-31 南京泰通科技有限公司 Repeater having leak cord monitoring function
CN201523378U (en) * 2009-10-23 2010-07-07 南京泰通电子科技有限公司 Miniature embedded type leaking cable monitoring system
CN103213602A (en) * 2012-01-19 2013-07-24 Ls产电株式会社 Track circuit apparatus for train
CN203466822U (en) * 2013-08-19 2014-03-05 Comlab(北京)通信系统设备有限公司 Circuit used for cable leakage detection and cable leakage detection system
CN103874116A (en) * 2014-03-27 2014-06-18 京信通信系统(中国)有限公司 Multi-system combiner platform and method for detecting cable fault points of leaky coaxial cable

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1758565A (en) * 2005-10-21 2006-04-12 上海欣民通信技术有限公司 Wide-band multi-system path connecting platform for mobile communication system
CN1808508A (en) * 2006-02-17 2006-07-26 南京泰通科技有限公司 Leakage cable working status monitoring system and its monitoring method
CN201174772Y (en) * 2008-02-21 2008-12-31 南京泰通科技有限公司 Repeater having leak cord monitoring function
CN201523378U (en) * 2009-10-23 2010-07-07 南京泰通电子科技有限公司 Miniature embedded type leaking cable monitoring system
CN103213602A (en) * 2012-01-19 2013-07-24 Ls产电株式会社 Track circuit apparatus for train
CN203466822U (en) * 2013-08-19 2014-03-05 Comlab(北京)通信系统设备有限公司 Circuit used for cable leakage detection and cable leakage detection system
CN103874116A (en) * 2014-03-27 2014-06-18 京信通信系统(中国)有限公司 Multi-system combiner platform and method for detecting cable fault points of leaky coaxial cable

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