CN1808508A - Leakage cable working status monitoring system and its monitoring method - Google Patents
Leakage cable working status monitoring system and its monitoring method Download PDFInfo
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- CN1808508A CN1808508A CN 200610038335 CN200610038335A CN1808508A CN 1808508 A CN1808508 A CN 1808508A CN 200610038335 CN200610038335 CN 200610038335 CN 200610038335 A CN200610038335 A CN 200610038335A CN 1808508 A CN1808508 A CN 1808508A
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Abstract
The invention discloses a monitor system for working state of leak cable, which comprises a monitor computer, a front-end device, and a back-end device. Wherein, connecting the front-end RF receive-transmit module connected to the cable front-end with a first coupler and the monitor computer by the front-end control module; connecting the front-end power module to said control module and cable to supply power; connecting the back-end RF receive-transmit module connected to the cable back-end with a second coupler and field-strength measurement module connected to the cable with a third coupler, and connecting the power module to cable and back-end control module. The opposite monitor method comprises: injecting test signal from the front-end device, comparing the error between feedback signal and the theoretical value to determine the cable working state; connecting the computer to remote monitor the working state. This invention reduces maintenance strength and labor source.
Description
One, technical field
The present invention relates to the device of watch-dog duty in a kind of communications field, a kind of leakage cable working status monitoring system that specifically is the invention still further relates to a kind of method of monitoring leakage cable working status.
Two, background technology
Radio communication is the important communication means of transportation by railroad commander and operation, because China's complicated topographical conditions, trunk railway is mostly through the mountain area, plateau or valley, the tunnel gathers, ravines and guillies criss-cross, exist the weak district of large-area signal of communication blind area or signal, continuous speed-raising along with train, require the necessary seamless link of wireless signal, so the blind communication facilities of wireless benefit such as wireless discharging-directly station obtains widely applying, wherein in the tunnel, mountain area, leak a kind of retransmitting antenna of cable as the repeater, use very extensive, yet that the tunnel in the mountain area generally all is located in is remote, personnel are difficult for arriving, this makes the Lou daily detection and the maintenance of cable, guarantees that the operate as normal of communication facilities becomes very difficult.
Three, summary of the invention
The objective of the invention is provides a kind of supervisory system and method for supervising thereof of monitoring leakage cable working status in order to overcome above-mentioned problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of leakage cable working status monitoring system is characterized in that: it comprises supervisory control comuter, FEP and backend machine;
Described FEP comprises front-end control module, front radio-frequency transceiver module, first coupling mechanism and front end power module, the front-end control module connects front radio-frequency transceiver module and supervisory control comuter respectively, the front radio-frequency transceiver module connects the front end that leaks cable by first coupling mechanism, the front radio-frequency transceiver module is in order to leaking cable emissioning testing signal and receiving feedback signals, and the front end power module connects the front-end control module and leaks cable to send to both;
Backend machine comprises rear end radio-frequency (RF) receiving and transmission module, field strength measuring module, post-controlled module, second coupling mechanism, the 3rd coupling mechanism and rear end power module, described post-controlled module connects rear end radio-frequency (RF) receiving and transmission module and field strength measuring module respectively, the rear end radio-frequency (RF) receiving and transmission module is connected with the leakage cable by second coupling mechanism, the field strength measuring module that is used for test signal intensity is connected with the leakage cable by the 3rd coupling mechanism, the rear end power module connects leakage cable and post-controlled module respectively, and the rear end power module is used for from leaking cable filtering power taking and powering to post-controlled module.
Principle of work: the characteristic that produces attenuation according to signal when leaking cable with transmission range, add signal source (being the radio-frequency (RF) receiving and transmission module in the FEP) at one section front end that leaks cable, the signal of the certain frequency that signal source is sent is coupled to Lou by coupling mechanism and transmits on the cable, signal is attenuation with the prolongation of transmission range, in leakage cable rear end receiver (being the field intensity measurement module) is set, detect the intensity of received signal, theoretical value default in the intensity of received signal and the post-controlled module is compared, its result is coupled to Lou cable again and returns FEP by rear end radio-frequency (RF) receiving and transmission module reverse transfer, if FEP is received feedback data at the appointed time, the theoretical value that is about in these data and the front-end control module compares, if within the error range that theoretical value allows, illustrate that Lou cable is excellent, otherwise the front-end control module sends the data-signal of pad value to supervisory control comuter by transmission mediums such as optical fiber; If overtime still do not have signal to return, then may be that field control system or leakage cable damage, also send alarm signal to the remote monitoring computing machine this moment.
In order to prevent the damage equipment that is struck by lightning, between the front radio-frequency transceiver and first coupling mechanism, between the rear end radio-frequency (RF) transceiver and second coupling mechanism, be connected lightning protection device respectively between field strength meter and the 3rd coupling mechanism, can effectively reduce infringement.
The present invention also provides a kind of method of monitoring leakage cable working status: it is characterized in that: this method comprises the following steps:
(1), according to parameter, frequency of operation, diameter and the length of leaking cable through testing the theoretical value of determining to leak signal normal attenuation in the cable, leaking cable has different attenuation according to different frequency, different bore and use length, and the attenuation parameter that theoretical value is promptly leaked cable is recorded by test;
(2), at the signal of the front end input certain frequency that leaks cable, this signal is coupled to Louing and transmits on the cable, intensity and theoretical value in leakage cable rear end with received signal compare, and are coupled to again the result Lou that cable feeds back to front end;
(3) if, leak the cable front end and receive feedback signal at the appointed time, this signal intensity and theoretical value are compared, if within the error that theoretical value allows, it is excellent then to leak cable, if deviation is too big, then may be to leak the aging reason of cable, then send the data-signal of concrete pad value to supervisory control comuter; If overtime also do not have the signal passback then to send alarm signal to supervisory control comuter.
The present invention compared with prior art has the following advantages: (1) by connecting supervisory control comuter, and the duty of can remote real-time monitoring leaking cable has reduced the intensity of safeguarding, has saved human resources; (2) send test signal by the FEP that leaks the cable front end, accept and beam back feedback signal by backend machine, through control module the theoretical value in this feedback signal and the storage control module is compared, not only can detect the Lou integrity of cable, can also detect the loss of cable Lou and splicing loss to understand the degree of aging that leaks cable, provide foundation for taking rational treatment measures; (3) connect lightning protection device after coupling mechanism, infringement to equipment can effectively prevent to be struck by lightning.
Four, description of drawings
Fig. 1 is a system block diagram of the present invention;
Fig. 2 is the workflow diagram of FEP among the present invention;
Fig. 3 is the workflow diagram of backend machine among the present invention.
Five, embodiment
As shown in Figure 1, a kind of leakage cable working status real time monitoring apparatus of the present invention, it comprises supervisory control comuter 1, FEP 2 and backend machine 3;
Described FEP 2 comprises front-end control module, front radio-frequency transceiver module, first coupling mechanism and front end power module, the front-end control module connects front radio-frequency transceiver module and supervisory control comuter 1 respectively, the front radio-frequency transceiver module connects the front end that leaks cable 4 by first coupling mechanism, the front radio-frequency transceiver module is in order to leaking cable 4 emissioning testing signals and receiving feedback signals, and the front end power module connects the front-end control module and leaks cable to send to both;
Describe the workflow of FEP in detail referring to Fig. 2.When the front end power module that is connected with front end control module (single-chip microcomputer) begins to power to it, the front-end control module presets initial value for the internal circuit of FEP, promptly set the initialization state, whether the front-end control module regularly detects the serial ports that is connected with supervisory control comuter then data, if not then to return previous step rapid, if any, then judge whether to send to the internal command of FEP for supervisory control comuter, such as the time is set, be provided with detection frequency, require to upload temperature etc.; In this way, then FEP is provided with and sends successfully sign or corresponding data, return afterwards and continue to monitor the serial ports that is connected with supervisory control comuter whether data are arranged to supervisory control comuter; If not internal command, then judge whether to requiring to detect the Lou order of cable; If not, then return and continue the serial ports that monitoring is connected with supervisory control comuter whether data are arranged; If detect the order of leaking cable, then front-end control module command front radio-frequency transceiver is to leaking cable emission detection signal, and a period of time of delaying time is afterwards waited for feedback signal.When receiving feedback signal, then compare, and comparative result is uploaded to supervisory control comuter with the leakage cable transport property theoretical value that is stored in the single-chip microcomputer.
Describe the workflow of backend machine in detail referring to Fig. 3.At first, after connecting the rear end power supply, post-controlled module presets initial value to the internal circuit of backend machine, whether post-controlled module regularly detects the serial ports that is connected with the rear end radio-frequency (RF) transceiver data, if not then to return previous step rapid, if any, then judge whether to leak the order of cable test signal intensity into test; If then post-controlled module order field strength measuring module is opened and the collecting test signal, compares with the leakage cable transport property theoretical value that is stored in the post-controlled module afterwards, and comparative result is uploaded to FEP; If not, then judge whether order to be set for inside, such as frequency being set, initial time is set, timing is set, requires to upload temperature etc., if inside is provided with order, then backend machine is provided with, and send and successfully indicate and if not inside order is set to FEP, then return master routine.
The present invention also provides a kind of method that detects leakage cable working status, and this method comprises the following steps:
(1), determines to leak the theoretical value of signal normal attenuation in the cable according to parameter, frequency of operation, diameter and the length of leaking cable;
(2), at the signal of the front end input certain frequency that leaks cable, this signal is coupled to Louing and transmits on the cable, intensity and theoretical value in leakage cable rear end with received signal compare, and are coupled to again the result Lou that cable feeds back to front end;
(3) if, leak the cable front end and receive feedback signal at the appointed time, this signal intensity and theoretical value are compared, if within the scope that error allows, then leak cable and stand intact, otherwise send the data-signal of concrete pad value to supervisory control comuter; If overtime also do not have the signal passback then to send alarm signal to supervisory control comuter.
Claims (3)
1, a kind of leakage cable working status monitoring system is characterized in that: it comprises supervisory control comuter (1), FEP (2) and backend machine (3);
Described FEP (2) comprises front-end control module, front radio-frequency transceiver module, first coupling mechanism and front end power module, the front-end control module connects front radio-frequency transceiver module and supervisory control comuter (1) respectively, the front radio-frequency transceiver module connects the front end that leaks cable (4) by first coupling mechanism, the front radio-frequency transceiver module is in order to leaking cable (4) emissioning testing signal and receiving feedback signals, and the front end power module connects the front-end control module and leaks cable to send to both;
Backend machine (3) comprises the rear end radio-frequency (RF) receiving and transmission module, field strength measuring module, post-controlled module, second coupling mechanism, the 3rd coupling mechanism and rear end power module, described post-controlled module connects rear end radio-frequency (RF) receiving and transmission module and field strength measuring module respectively, the rear end radio-frequency (RF) receiving and transmission module is connected with leakage cable (4) by second coupling mechanism, the field strength measuring module that is used for test signal intensity is connected with leakage cable (4) by the 3rd coupling mechanism, the rear end power module connects leakage cable (4) and post-controlled module respectively, and the rear end power module is used for from leaking cable (4) filtering power taking and powering to post-controlled module.
2, leakage cable working status monitoring system according to claim 1 is characterized in that: between the front radio-frequency transceiver and first coupling mechanism, between the rear end radio-frequency (RF) transceiver and second coupling mechanism, be connected lightning protection device respectively between field strength meter and the 3rd coupling mechanism.
3, a kind of method of monitoring leakage cable working status: it is characterized in that: this method comprises the following steps:
(1), according to parameter, frequency of operation, diameter and the length of leaking cable through testing the theoretical value of determining to leak signal normal attenuation in the cable;
(2), at the signal of the front end input certain frequency that leaks cable, this signal is coupled to Louing and transmits on the cable, intensity and theoretical value in leakage cable rear end with received signal compare, and are coupled to again the result Lou that cable feeds back to front end;
(3) if, leak the cable front end and receive feedback signal at the appointed time, this signal intensity and theoretical value are compared, if within the scope that theoretical value allows, it is excellent then to leak cable, otherwise to the data-signal of supervisory control comuter transmission pad value; If overtime also do not have the signal passback then to send alarm signal to supervisory control comuter.
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| CNB2006100383358A CN100361167C (en) | 2006-02-17 | 2006-02-17 | Leakage cable working status monitoring system and its monitoring method |
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| CNB2006100383358A CN100361167C (en) | 2006-02-17 | 2006-02-17 | Leakage cable working status monitoring system and its monitoring method |
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| CN1808508A true CN1808508A (en) | 2006-07-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098117A (en) * | 2010-12-31 | 2011-06-15 | 深圳市虹远通信有限责任公司 | Method for detecting leakage cable based on reflected wave comprehensive performances |
| CN102495567A (en) * | 2011-12-02 | 2012-06-13 | 中天日立射频电缆有限公司 | Radiation field-intensity automatic control system based on leakage cable |
| CN103036632A (en) * | 2012-04-16 | 2013-04-10 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103344880A (en) * | 2013-05-24 | 2013-10-09 | 南京泰通科技有限公司 | Leaky cable/antenna feeder real-time monitoring apparatus and working method thereof |
| CN104735711A (en) * | 2015-03-26 | 2015-06-24 | 昆山美博中芯投资管理企业（有限合伙） | Novel GSM-R leaky-coaxial-cable detection device |
| CN108982970A (en) * | 2018-04-27 | 2018-12-11 | 广州杰赛科技股份有限公司 | Multi-system access platform leaks detection method, device and the leakage cable detection system of cable |
| CN109270409A (en) * | 2018-11-27 | 2019-01-25 | 广州开信通讯系统有限公司 | Leak cable fault point positioning method, device, computer equipment and storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2053480B (en) * | 1979-07-06 | 1983-05-18 | Seltrust Eng Ltd | Position or movement sensor |
| JP3179689B2 (en) * | 1995-12-06 | 2001-06-25 | 東日本旅客鉄道株式会社 | LCX fault detection device |
-
2006
- 2006-02-17 CN CNB2006100383358A patent/CN100361167C/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098117A (en) * | 2010-12-31 | 2011-06-15 | 深圳市虹远通信有限责任公司 | Method for detecting leakage cable based on reflected wave comprehensive performances |
| CN102495567A (en) * | 2011-12-02 | 2012-06-13 | 中天日立射频电缆有限公司 | Radiation field-intensity automatic control system based on leakage cable |
| CN103036632A (en) * | 2012-04-16 | 2013-04-10 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103036632B (en) * | 2012-04-16 | 2014-05-21 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103344880A (en) * | 2013-05-24 | 2013-10-09 | 南京泰通科技有限公司 | Leaky cable/antenna feeder real-time monitoring apparatus and working method thereof |
| CN104735711A (en) * | 2015-03-26 | 2015-06-24 | 昆山美博中芯投资管理企业（有限合伙） | Novel GSM-R leaky-coaxial-cable detection device |
| CN104735711B (en) * | 2015-03-26 | 2018-10-16 | 雷功书 | Novel GSM-R leaks cable detection device |
| CN108982970A (en) * | 2018-04-27 | 2018-12-11 | 广州杰赛科技股份有限公司 | Multi-system access platform leaks detection method, device and the leakage cable detection system of cable |
| CN109270409A (en) * | 2018-11-27 | 2019-01-25 | 广州开信通讯系统有限公司 | Leak cable fault point positioning method, device, computer equipment and storage medium |
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|---|---|
| CN100361167C (en) | 2008-01-09 |
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Owner name: NANJING TICOM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: NANJING TAITONG S + T CO., LTD. |
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Address after: Fei Lu Yuhua Economic Development Zone of Nanjing City, Jiangsu Province, No. 210000 12-8 Patentee after: NANJING TICOM TECH CO., LTD. Address before: Nanjing City, Jiangsu province 210037 Luxi Camp No. 97 Patentee before: Nanjing Taitong S & T Co., Ltd. |