CN104735711A - Novel GSM-R leaky-coaxial-cable detection device - Google Patents
Novel GSM-R leaky-coaxial-cable detection device Download PDFInfo
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- CN104735711A CN104735711A CN201510136196.1A CN201510136196A CN104735711A CN 104735711 A CN104735711 A CN 104735711A CN 201510136196 A CN201510136196 A CN 201510136196A CN 104735711 A CN104735711 A CN 104735711A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
Abstract
The invention discloses a novel GSM-R leaky-coaxial-cable detection device. The device comprises signal receiving and transmitting units, signal detection units and 3dB couplers which are arranged between every two adjacent leaky coaxial cables. Coupling networks are located between the 3dB couplers and the signal receiving and transmitting units. The signal receiving and transmitting units further comprise signal receiving terminals, signal transmitting terminals and antenna terminals. The antenna terminals of the signal receiving and transmitting units are connected with the fourth transmitting terminals of the 3dB couplers through transmission lines. The signal detection units further comprise detection transmitting terminals, detection receiving terminals, PN code generators, PN code processors and carrier oscillators for generating specific frequency carries. The PN code generators are used for generating PN codes, the detection transmitting terminals modulate the PN codes to the carries to from modulation detection signals and send the modulation detection signals to the coupling networks, and the PN codes generated by the PN code generators corresponding to a plurality of the leaky coaxial cables are orthogonal mutually. By means of the novel GSM-R leaky-coaxial-cable detection device, only the carries of a single frequency and PN codes are used, the leaky coaxial cables do not interfere with one another, the complexity is lowered greatly, and furthermore, the reliability and detection accuracy of the system are further improved.
Description
Technical field
The present invention relates to a kind of novel GSM-R and leak cable checkout gear, belong to railway signal detection field.
Background technology
Along with the railway GSM-R network operation is open-minded, due to equipment quality problem, project installation problem, part leak joint that cable connects, wire jumper, antenna enter the fault multiple phase by starting.Such as, but actual maintenance is more difficult, the restriction of the factors such as long distance tunnel, widow time, passive type routine inspection mode, and some fault is difficult to by Timeliness coverage.Therefore be completely necessary to the Real-Time Monitoring of leaky cable and antenna transmission system.
Whether therefore, in Railroad Communication System, communication system needs high stability, in order to ensure this point, will detect in real time leakage cable, normally work to monitor leakage of any moment cable.Whether in traditional detection method, leak cable and can be put a checkout gear every one section, monitor in real time to leakage cable, detecting leakage cable has damage.In order to avoid the signal between adjacent leakage cable interferes with each other, usually on adjacent leakage cable, adopt the carrier signal of different frequency to detect, and the communication of multi-frequency carrier wave make the complexity of whole system greatly increase, as shown in Figure 1.
Summary of the invention
The invention provides a kind of novel GSM-R and leak cable checkout gear, this novel GSM-R leaks cable checkout gear and only uses the carrier wave of single-frequency to add PN code, different leakage between cable does not interfere with each other, and greatly reduces complexity and the reliability of further raising system and detection accuracy.
For achieving the above object, the technical solution used in the present invention is: a kind of novel GSM-R leaks cable checkout gear, comprise the leakage cable of some series connection, comprise: between adjacent described leakage cable, be provided with signal transmitting and receiving unit, detection signal unit and three-dB coupler, adjacent leakage cable is connected respectively to first, second transmission ends of three-dB coupler, and a coupling network is between three-dB coupler and signal transmitting and receiving unit;
Described three-dB coupler is for receiving digital signal, the modulation feedback detection signal of natural leak cable, and the digital signal, the modulated detection signal that send from coupling network, the modulated detection signal of described coupling network difference Autonomous test signal element in future, the digital data transmission of signal transmitting and receiving unit are to the 3rd transmission ends, the 4th transmission ends;
Described signal transmitting and receiving unit comprises signal receiving end, signal transmitting terminal and antenna end further, the antenna end of described signal transmitting and receiving unit is connected with the 4th transmission ends of three-dB coupler by transmission line, described signal receiving end receives the digital signal from base station, digital signal from signal receiving end is carried out amplification and is formed the rear digital signal of amplification by signal transmitting terminal, and described antenna end will amplify rear digital signal by transmission line to three-dB coupler the 4th transmission ends;
Described detection signal unit comprises detection transmitting terminal further, detects receiving terminal, PN code generator, PN code processor and the carrier oscillator for generation of characteristic frequency carrier wave, described PN code generator and carrier oscillator are connected to detection transmitting terminal, described PN code processor is connected to detection receiving terminal, and described detection transmitting terminal, detection receiving terminal are connected to the 3rd transmission ends of three-dB coupler;
Described PN code generator is for generating a PN coding, described detection transmitting terminal will PN coded modulation to carrier wave form modulated detection signal and deliver to coupling network, described detection receiving terminal is for getting off the PN code in modulation feedback detection signal from demodulation carrier wave, and described PN code processor judges the damaged condition of leaking cable according to PN code under demodulation; The PN coding that the PN code generator that some described leakage cables are corresponding generates is orthogonal each other.
In technique scheme, further improvement opportunity scheme is as follows:
In such scheme, the frequency of described carrier oscillator is 1GHz or 2GHz.
Because technique scheme is used, the present invention compared with prior art has following advantages:
The novel GSM-R of the present invention leaks cable checkout gear, it is different that itself and technology before adopt multiple different frequency to carry out detection, here the carrier wave of single-frequency is only used to add PN code, between the different PN code leaking cable, there is orthogonality, much lower than the complexity of multiple frequency carriers system of the complexity of single-frequency carrier system, improve again reliability and the detection accuracy of system further.
Accompanying drawing explanation
Accompanying drawing 1 is that this existing GSM-R leaks cable structure of the detecting device schematic diagram;
Accompanying drawing 2 is the present invention's novel GSM-R leakage cable structure of the detecting device schematic diagram.
In above accompanying drawing: 1, leak cable; 2, signal transmitting and receiving unit; 3, detection signal unit; 4, three-dB coupler; 5, the second transmission ends; 6, the 3rd transmission ends; 7, signal receiving end; 8, signal transmitting terminal; 9, antenna end; 10, transmitting terminal is detected; 11, receiving terminal is detected; 12, PN code generator; 13, PN code processor; 14, carrier oscillator; 15, coupling network.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment 1: a kind of novel GSM-R leaks cable checkout gear, comprise the leakage cable 1 of some series connection, it is characterized in that: comprising: between adjacent described leakage cable 1, be provided with signal transmitting and receiving unit 2, detection signal unit 3 and three-dB coupler 4, adjacent leakage cable is connected respectively to first, second transmission ends 5,6, one coupling network 15 of three-dB coupler 4 between three-dB coupler 4 and signal transmitting and receiving unit 2;
Described three-dB coupler 4 is for receiving digital signal, the modulation feedback detection signal of natural leak cable, and the digital signal, the modulated detection signal that send from coupling network 15, the modulated detection signal of described coupling network 15 difference Autonomous test signal element in future 3, the digital data transmission of signal transmitting and receiving unit 2 are to the 3rd transmission ends, the 4th transmission ends;
Described signal transmitting and receiving unit 2 comprises signal receiving end 7, signal transmitting terminal 8 and antenna end 9 further, the antenna end 9 of described signal transmitting and receiving unit 2 is connected with the 4th transmission ends of three-dB coupler 4 by transmission line, described signal receiving end 7 receives the digital signal from base station, digital signal from signal receiving end 7 is carried out amplification and is formed the rear digital signal of amplification by signal transmitting terminal 8, and described antenna end 9 will amplify rear digital signal by transmission line to three-dB coupler 4 the 4th transmission ends;
Described detection signal unit 3 comprises detection transmitting terminal 10 further, detects receiving terminal 11, PN code generator 12, PN code processor 13 and the carrier oscillator 14 for generation of characteristic frequency carrier wave, described PN code generator 12 and carrier oscillator 14 are connected to and detect transmitting terminal 10, described PN code processor 13 is connected to and detects receiving terminal 11, and described detection transmitting terminal 10, detection receiving terminal 11 are connected to the 3rd transmission ends of three-dB coupler 4;
Described PN code generator 12 is for generating a PN coding, described detection transmitting terminal 10 will PN coded modulation to carrier wave form modulated detection signal and deliver to coupling network 15, described detection receiving terminal 11 is for getting off the PN code in modulation feedback detection signal from demodulation carrier wave, and described PN code processor 13 judges the damaged condition of leaking cable according to PN code under demodulation; The PN coding that the PN code generator 12 of some described leakage cable 1 correspondences generates is orthogonal each other.The frequency of described carrier oscillator 14 is 1GHz.
Embodiment 2: a kind of novel GSM-R leaks cable checkout gear, comprise the leakage cable 1 of some series connection, it is characterized in that: comprising: between adjacent described leakage cable 1, be provided with signal transmitting and receiving unit 2, detection signal unit 3 and three-dB coupler 4, adjacent leakage cable is connected respectively to first, second transmission ends 5,6, one coupling network 15 of three-dB coupler 4 between three-dB coupler 4 and signal transmitting and receiving unit 2;
Described three-dB coupler 4 is for receiving digital signal, the modulation feedback detection signal of natural leak cable, and the digital signal, the modulated detection signal that send from coupling network 15, the modulated detection signal of described coupling network 15 difference Autonomous test signal element in future 3, the digital data transmission of signal transmitting and receiving unit 2 are to the 3rd transmission ends, the 4th transmission ends;
Described signal transmitting and receiving unit 2 comprises signal receiving end 7, signal transmitting terminal 8 and antenna end 9 further, the antenna end 9 of described signal transmitting and receiving unit 2 is connected with the 4th transmission ends of three-dB coupler 4 by transmission line, described signal receiving end 7 receives the digital signal from base station, digital signal from signal receiving end 7 is carried out amplification and is formed the rear digital signal of amplification by signal transmitting terminal 8, and described antenna end 9 will amplify rear digital signal by transmission line to three-dB coupler 4 the 4th transmission ends;
Described detection signal unit 3 comprises detection transmitting terminal 10 further, detects receiving terminal 11, PN code generator 12, PN code processor 13 and the carrier oscillator 14 for generation of characteristic frequency carrier wave, described PN code generator 12 and carrier oscillator 14 are connected to and detect transmitting terminal 10, described PN code processor 13 is connected to and detects receiving terminal 11, and described detection transmitting terminal 10, detection receiving terminal 11 are connected to the 3rd transmission ends of three-dB coupler 4;
Described PN code generator 12 is for generating a PN coding, described detection transmitting terminal 10 will PN coded modulation to carrier wave form modulated detection signal and deliver to coupling network 15, described detection receiving terminal 11 is for getting off the PN code in modulation feedback detection signal from demodulation carrier wave, and described PN code processor 13 judges the damaged condition of leaking cable according to PN code under demodulation; The PN coding that the PN code generator 12 of some described leakage cable 1 correspondences generates is orthogonal each other.The frequency of described carrier oscillator 14 is 2GHz.
When adopting above-mentioned novel GSM-R to leak cable checkout gear, it is different that itself and technology before adopt multiple different frequency to carry out detection, here the carrier wave of single-frequency is only used to add PN code, between the different PN code leaking cable, there is orthogonality, much lower than the complexity of multiple frequency carriers system of the complexity of single-frequency carrier system, improve again reliability and the detection accuracy of system further.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (2)
1. a novel GSM-R leaks cable checkout gear, comprise the leakage cable (1) of some series connection, it is characterized in that: comprising: between adjacent described leakage cable (1), be provided with signal transmitting and receiving unit (2), detection signal unit (3) and three-dB coupler (4), adjacent leakage cable is connected respectively to first, second transmission ends (5,6) of three-dB coupler (4), and a coupling network (15) is positioned between three-dB coupler (4) and signal transmitting and receiving unit (2);
Described three-dB coupler (4) is for receiving digital signal, the modulation feedback detection signal of natural leak cable, and the digital signal, the modulated detection signal that send from coupling network (15), the modulated detection signal of described coupling network (15) difference Autonomous test signal element in future (3), the digital data transmission of signal transmitting and receiving unit (2) are to the 3rd transmission ends, the 4th transmission ends;
Described signal transmitting and receiving unit (2) comprises signal receiving end (7), signal transmitting terminal (8) and antenna end (9) further, the antenna end (9) of described signal transmitting and receiving unit (2) is connected with the 4th transmission ends of three-dB coupler (4) by transmission line, described signal receiving end (7) receives the digital signal from base station, digital signal from signal receiving end (7) is carried out amplification and is formed the rear digital signal of amplification by signal transmitting terminal (8), and described antenna end (9) will amplify rear digital signal by transmission line to three-dB coupler (4) the 4th transmission ends;
Described detection signal unit (3) comprises further detects transmitting terminal (10), detection receiving terminal (11), PN code generator (12), PN code processor (13) and the carrier oscillator (14) for generation of characteristic frequency carrier wave, described PN code generator (12) and carrier oscillator (14) are connected to and detect transmitting terminal (10), described PN code processor (13) is connected to detects receiving terminal (11), and described detection transmitting terminal (10), detection receiving terminal (11) are connected to the 3rd transmission ends of three-dB coupler (4);
Described PN code generator (12) is for generating a PN coding, described detection transmitting terminal (10) PN coded modulation to carrier wave will form modulated detection signal and delivers to coupling network (15), described detection receiving terminal (11) is for getting off the PN code in modulation feedback detection signal from demodulation carrier wave, and described PN code processor (13) judges the damaged condition of leaking cable according to PN code under demodulation; The PN coding that the PN code generator (12) of some described leakage cable (1) correspondences generates is orthogonal each other.
2. novel GSM-R according to claim 1 leaks cable checkout gear, it is characterized in that: the frequency of described carrier oscillator (14) is 1GHz or 2GHz.
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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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| Application Number | Priority Date | Filing Date | Title |
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| CN201510136196.1A CN104735711B (en) | 2015-03-26 | 2015-03-26 | Novel GSM-R leaks cable detection device |
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| CN104735711A true CN104735711A (en) | 2015-06-24 |
| CN104735711B CN104735711B (en) | 2018-10-16 |
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| CN201510136196.1A Active CN104735711B (en) | 2015-03-26 | 2015-03-26 | Novel GSM-R leaks cable detection device |
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Citations (7)
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| 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 |
-
2015
- 2015-03-26 CN CN201510136196.1A patent/CN104735711B/en active Active
Patent Citations (7)
| 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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| CN104735711B (en) | 2018-10-16 |
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Effective date of registration: 20150917 Address after: Suzhou City, Jiangsu province 215000 town Kunshan City Green Road 231 Lane 9 Building No. 23: Applicant after: Lei Gongshu Address before: Suzhou City, Jiangsu province 215332 town Kunshan City Green Road 231 Lane 9 Building No. 23: Applicant before: Kunshan Sino US investment management enterprise (limited partnership) |
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