CN102963395B - Railway semi-automatic block information system capable of monitoring in real time and working method thereof - Google Patents
Railway semi-automatic block information system capable of monitoring in real time and working method thereof Download PDFInfo
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- CN102963395B CN102963395B CN201210528967.8A CN201210528967A CN102963395B CN 102963395 B CN102963395 B CN 102963395B CN 201210528967 A CN201210528967 A CN 201210528967A CN 102963395 B CN102963395 B CN 102963395B
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Abstract
The invention discloses a railway semi-automatic block information system capable of monitoring in real time and a working method of the system. The system comprises two semi-automatic block machines arranged in a certain distance, wherein the two semi-automatic block machines are connected by two interval cables; the front ends of the two semi-automatic block machines are respectively connected with a photovoltaic conversion and transmission device, which is connected by an optical fiber, to realize conversion between the cables and the optical fiber through corresponding selector switches; the front end of each selector switch is further provided with a monitoring unit for judging the cable state; and the control ends of the monitoring units are connected with the selector switches to control the switch of the selector switches. The method of the system is as follows: adding audio signals fH and fL at different frequencies at the two ends of the cables and mutually receiving the signals through the monitoring units; if one end cannot receive the audio signal transmitted by the other end, indicating that the cable is broken down, notifying the selector switch at the local end to switch to the photovoltaic conversion and transmission device, and communicating through the optical fiber. The system and the method can greatly improve the reliability and the security of the online 64D semi-automatic block equipment.
Description
Technical field
The present invention relates to the information carrying means on railroad communication devices, specifically a kind of to being applied to the Real-Time Monitoring of railway 64D semiautomatic block information carrying means running status and conversion equipment and method of work thereof.
Background technology
The reliability height of Source of Railway Communication and Signalling transmission is that can railways means the key factor of normal operation, the 64D semiautomatic block information transmission in past is based on cable transmission, due to factors such as site operations, the events such as frequent generation cable is destroyed, thus cause signal can not normal transmission, have a strong impact on railway normal transport, serious economic loss is brought to country, for solving this problem, the applicant proposed the patent of invention that a key name is called " semi-automatic obturation information transmission change-over device dedicated for railway " (publication number 101159446) in 2007, this invention is that every for Along Railway platform semi-automatic block machine is furnished with a transmission equipment be attached thereto respectively, optical cable in parallel and cable between the transmission equipment of adjacent two semi-automatic block machines, the reliability of signal transmission between semi-automatic block machine is improved by increasing optical cable transmission passage.
But, in the actual use procedure of this invention, because railway system's electric equipment is many, sometimes there will be interfering short pulse in the line, cause block instrument failure; To some cable fault as cable failure electric leakage etc., this equipment can not automatically switch to optical cable, these problems be all equipment on stream, not having complete in RAMS(reliability (Reliability), availability (Availability), maintenanceability (Maintainability) and fail safe (Safety)) Signal Products designing requirement causes, in order to ensure reliability and the fail safe of 64D semiautomatic block information carrying means signal, must ensure that block cabinet uses cable under normal circumstances, only under cable fault condition, use optical cable.For this reason, the reliability of system must be provided further.
Summary of the invention
Technical problem to be solved by this invention is to provide the railway semi-automatic block information system with real-time monitoring and control and method of work thereof that a kind of reliability strengthens greatly.
The railway semi-automatic block information system of a kind of real-time monitoring of the present invention, comprise and be positioned at Along Railway and separated by a distance two semi-automatic block machines, connected by two interval cables between two semi-automatic block machines, two semi-automatic block machine front ends respectively connect the opto-electronic conversion and transmission equipment that are connected with optical fiber, and realize the conversion between cable and optical fiber by each self-corresponding diverter switch, the monitoring means that one judges cable status is also provided with in each diverter switch front end, this monitoring means has transmission and received audio signal circuit, judge the transmission state of two semi-automatic block machines according to the audio signal sent and receive between two monitoring means, the control end of monitoring means connects diverter switch to control diverter switch according to transmission state.
Described monitoring means comprises:
Interface protection module: being connected in parallel on two interval cables, for isolating block signal, and there is lightning protection effect;
Descending matched filtering module: connecting interface protection module, carries out filtering to the audio signal frequency received, and takes out useful signal, simultaneously and the circuit of interface protection module mate;
Signal amplification module: connect descending matched filtering module, in receiving loop, the small-signal in interval cable is amplified, be convenient to signal receiving;
Signal receiving module: connection signal amplification module, for judging whether the character of Received signal strength and Received signal strength, exports to control output module testing result;
Control output module: input connection signal demodulation module, output connects diverter switch, signal madulation module, power amplifier module, for comparing to received signal, and controls diverter switch, signal tranmitting frequency and transmitting power.
Signal madulation module: connection control output module, transmits for providing, and modulates as required;
Power amplifier module: connection signal modulation module, carries out power amplification to transmitting, and makes its applicable signal long-distance transmissions requirement;
Up matched filtering module: connecting interface protection module, carries out filtering to the audio signal frequency sent, and takes out useful signal, simultaneously and the circuit of interface protection module mate.
The method of work of described railway semi-automatic block information system, it comprises the following steps: the audio signal being added different frequency by monitoring means at interval cable two ends, and mutually receives; If one end does not receive the audio signal that the other side sends, illustrate that cable breaks down, the diverter switch of notice local terminal is switched to opto-electronic conversion and transmission equipment, communicates with optical fiber.
In order to ensure reliability, often hold tranmitting frequency to have two groups, transmit as long as receive the other side, the first class frequency is then launched in this locality, represents that having received the other side transmits; If do not receive square signal, then launch the second class frequency, represent that this locality detects cable fault; When receiving the second class frequency signal that the other side launches or can not receive the other side's frequency signal, local by switching over to photoelectric conversion device.
Present invention achieves the real time on-line monitoring of 64D semi-automatic block machine cable status, for cable, optical cable automatically switch and propose a kind of new solution.The present invention can transform existing equipment easily, and will greatly improve reliability and the fail safe of online 64D semiautomatic block equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is the circuit block diagram of monitoring means in Fig. 1,
Fig. 3 is cable monitoring frequency diagram.
Embodiment
As shown in Figure 1, unit of the present invention is configured to two semi-automatic block machines separated by a distance, connected by two interval cables between two semi-automatic block machines, semi-automatic block machine front end respectively connect one with optical fiber be connected opto-electronic conversion and transmission equipment, and realize the conversion between cable and optical fiber by each self-corresponding diverter switch, one is also provided with for judging the monitoring means of cable status in each diverter switch front end, this monitoring means can send and received audio signal, judge the transmission state of two semi-automatic block machines according to the audio signal sent and receive between two monitoring means, the control end of monitoring means connects diverter switch to control diverter switch according to transmission state.
As Fig. 2, monitoring means comprises:
Interface protection module: being connected in parallel on two interval cables, for isolating block signal, and there is lightning protection effect;
Descending matched filtering module: connecting interface protection module, carries out filtering according to transmitting-receiving frequency, takes out useful signal, simultaneously and the circuit of interface protection module mate;
Signal amplification module: connect descending matched filtering module, in receiving loop, the small-signal in interval cable is amplified, be convenient to signal receiving;
Signal receiving module: connection signal amplification module, for judging whether the character of Received signal strength and Received signal strength, exports to control output module testing result;
Control output module: input connection signal demodulation module, output connects diverter switch, signal madulation module, power amplifier module, for comparing to received signal, and controls diverter switch, signal tranmitting frequency and transmitting power.
Signal madulation module: connection control output module, transmits for providing, and modulates as required;
Power amplifier module: connection signal modulation module, carries out power amplification to transmitting, and makes its applicable signal long-distance transmissions requirement;
Up matched filtering module: connecting interface protection module, carries out filtering according to transmitting-receiving frequency, takes out useful signal, simultaneously and the circuit of interface protection module mate.
As Fig. 3, the method for work of railway semi-automatic block information system is: the audio signal fH, the fL that are added different frequency by monitoring means at cable A, B two ends, and mutually receives; If one end does not receive the audio signal that the other side sends, illustrate that cable breaks down, the diverter switch of notice local terminal is switched to opto-electronic conversion transmission equipment, communicates with optical fiber.In order to ensure reliability, often hold tranmitting frequency to have two groups, transmit as long as receive the other side, the first class frequency is then launched in this locality, if do not receive square signal, then launches the second class frequency, represents that this locality detects cable fault.When receiving the second class frequency signal that the other side launches or can not receive the other side's frequency signal, local by switching over to photoelectric conversion device.Such as A termination receives B end signal fL1 or fL2, then launch fH1 signal, if can not receive fL1 or fL2 signal, launches fH2 signal; As long as can not receive fL1 frequency signal, local diverter switch all can be switched to opto-electronic conversion transmission equipment side.
Interval cable is mainly used in transmission blocking voltage pulse signal, the 100Hz pulsating direct current signal of the constant voltage DC that signal form has power supply panel to export and rectifier output, and pulse voltage scope is at ± 130V.
The fault such as the mainly short circuit of monitoring cable of monitoring means monitoring cable state, open circuit, shorted to earth, leakage losses are excessive, prevents from causing block signal to transmit thus and the accident formed.Long-distance cable state inspection has DC detecting and audio frequency monitoring, and in order to not cause interference to block signal, monitoring means adopts audio signal monitoring technology.
The function of the present invention after forming product:
1, when cable breaks down, monitoring means should pass through indicator light alarm, and reports network management unit;
2, output detection signal can not disturb block cabinet normally to work;
3, transfer relay adopts safety relay, ensures handover security;
4, according to signal RAMS designing requirement, redundancy and safety Design are carried out to detection, driving and control unit;
5, there is the protective capability of lightning protection and strong electromagnetic;
6, transmitting power can adjust;
7 and protected location merge design, can safety relay be shared;
8, inspection is carried out back to relay status;
9, possess cable normal after, unit auto restore facility;
10, cable status deixis is possessed
11, detecting unit and interval cable completely isolated;
12, incoming level RSSI detects;
13, can compatible existing equipment 64D-02 type protected location repertoire.
Product the key technical indexes:
1, output frequency is detected: high end frequency fH(=1200Hz), low end frequency fL(=700Hz);
2, corresponding output frequency, its incoming frequency detected is respectively: fL and fH;
3, operating voltage is ± 12VDC, power consumption < 5W
4, detecting distance >=15km farthest;
5, lightning protection is greater than 2kV;
6, input and be withstand voltagely greater than 800V;
7, output level adjustable range: Vp-p=0.1 ~ 10V, step 0.1V;
8, minimum detection level Vmin≤1mV;
9, AGC automatic gain scope: >=30dB;
10, the detection response time is not more than 1 second;
11, RSSI input signal detection scope: 1 ~ 1000mV; Precision: ± 5mV.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (2)
1. the railway semi-automatic block information system of a monitoring in real time, comprise and be positioned at Along Railway and separated by a distance two semi-automatic block machines, connected by two interval cables between two semi-automatic block machines, two semi-automatic block machine front ends respectively connect the opto-electronic conversion and transmission equipment that are connected with optical fiber, and realize the conversion between cable and optical fiber by each self-corresponding diverter switch, the monitoring means that one judges cable status is also provided with in each diverter switch front end, this monitoring means has transmission and received audio signal circuit, judge the transmission state of two semi-automatic block machines according to the audio signal sent and receive between two monitoring means, the control end of monitoring means connects diverter switch to control diverter switch according to transmission state, it is characterized in that, the process of this system is:
Added the audio signal of different frequency by monitoring means at interval cable two ends, and mutually receive; If one end does not receive the audio signal that the other side sends, illustrate that cable breaks down, the diverter switch of notice local terminal is switched to opto-electronic conversion and transmission equipment, communicates with optical fiber; Wherein often hold tranmitting frequency to have two groups, transmit as long as receive the other side, the first class frequency is then launched in this locality, represents that having received the other side transmits; If do not receive square signal, then launch the second class frequency, represent that this locality detects cable fault; When receiving the second class frequency signal that the other side launches or can not receive the other side's frequency signal, local by switching over to photoelectric conversion device.
2. the railway semi-automatic block information system of real-time monitoring according to claim 1, is characterized in that, described monitoring means comprises:
Interface protection module: being connected in parallel on two interval cables, for isolating block signal, and there is lightning protection effect;
Descending matched filtering module: connecting interface protection module, carries out filtering to the audio signal frequency received, and takes out useful signal, simultaneously and the circuit of interface protection module mate;
Signal amplification module: connect descending matched filtering module, in receiving loop, the small-signal in interval cable is amplified, be convenient to signal receiving;
Signal receiving module: connection signal amplification module, for judging whether the character of Received signal strength and Received signal strength, exports to control output module testing result;
Control output module: input connection signal demodulation module, output connects diverter switch, signal madulation module, power amplifier module, for comparing to received signal, and controls diverter switch, signal tranmitting frequency and transmitting power;
Signal madulation module: connection control output module, transmits for providing, and modulates as required;
Power amplifier module: connection signal modulation module, carries out power amplification to transmitting, and makes its applicable signal long-distance transmissions requirement;
Up matched filtering module: connecting interface protection module, carries out filtering to the audio signal frequency sent, and takes out useful signal, simultaneously and the circuit of interface protection module mate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210528967.8A CN102963395B (en) | 2012-12-11 | 2012-12-11 | Railway semi-automatic block information system capable of monitoring in real time and working method thereof |
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| CN201210528967.8A CN102963395B (en) | 2012-12-11 | 2012-12-11 | Railway semi-automatic block information system capable of monitoring in real time and working method thereof |
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| CN102963395A CN102963395A (en) | 2013-03-13 |
| CN102963395B true CN102963395B (en) | 2015-03-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103481913B (en) * | 2013-09-10 | 2015-10-14 | 中国铁道科学研究院 | A kind of monitoring method for railway semi-automatic block equipment and device |
| CN108445332B (en) * | 2018-06-13 | 2023-09-22 | 国家电网有限公司 | Cable running state on-line monitoring system |
| CN112152665B (en) * | 2020-09-28 | 2021-07-13 | 北京锐为信科技有限公司 | Optical block remote switching system |
| CN113324592A (en) * | 2021-06-30 | 2021-08-31 | 国网河北省电力有限公司信息通信分公司 | System, method, switching device and storage medium for pipe gallery monitoring |
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|---|---|---|---|---|
| CN2433635Y (en) * | 1999-10-26 | 2001-06-06 | 南航(集团)汕头航空有限公司 | Testing instrument for fault of conducting wire |
| CN1866042A (en) * | 2006-06-22 | 2006-11-22 | 王祥贵 | Testing circuit of multifunctional cable tester |
| CN101159446A (en) * | 2007-11-15 | 2008-04-09 | 南京泰通科技有限公司 | Semi-automatic obturation information transmission change-over device dedicated for railway |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932008A (en) * | 1982-08-17 | 1984-02-21 | Kawasaki Heavy Ind Ltd | Detecting system for stop position of vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433635Y (en) * | 1999-10-26 | 2001-06-06 | 南航(集团)汕头航空有限公司 | Testing instrument for fault of conducting wire |
| CN1866042A (en) * | 2006-06-22 | 2006-11-22 | 王祥贵 | Testing circuit of multifunctional cable tester |
| CN101159446A (en) * | 2007-11-15 | 2008-04-09 | 南京泰通科技有限公司 | Semi-automatic obturation information transmission change-over device dedicated for railway |
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