CN107395459A - One kind leakage cable real time on-line monitoring system - Google Patents
One kind leakage cable real time on-line monitoring system Download PDFInfo
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- CN107395459A CN107395459A CN201710672254.1A CN201710672254A CN107395459A CN 107395459 A CN107395459 A CN 107395459A CN 201710672254 A CN201710672254 A CN 201710672254A CN 107395459 A CN107395459 A CN 107395459A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention provides one kind to leak cable real time on-line monitoring system, and it can solve the problems, such as that function existing for existing leakage cable monitoring system is single, can not carry out the comprehensive real time on-line monitoring of system to the running status and operational factor for leaking cable.Network management center electricly connects the monitoring main frame located at each site communication computer room or repeater by transmission channel, it is each monitoring main frame be used for monitoring and test leakage cable link operational factor and by operational factor result by transmission channel to network management center, network management center operational factor result is analyzed and processed and according to analysis processing result judge leakage cable link running status；The signal insertion module of monitoring main frame is connected with base station, leakage cable link connection and signal insertion module with path selecting module respectively, message processing module is connected with RF detection module, the automatically controlled data of path selecting module, connected between RF detection module and path selecting module by radio frequency cable, network management center is electricly connected by transmission channel and transport module.
Description
Technical field
The present invention relates to the monitoring technical field of wireless communication system, makees signal more particularly, to using leakage coaxial cable
The urban track traffic wireless communication field of covering, it is specially a kind of leakage cable real time on-line monitoring system.
Background technology
The propagation of wireless signal is often restricted in the long and narrow space in banding such as tunnel, piping lane, mine, herein
Wireless signal covering is made in class region, and being limited by the traditional antenna of itself radiation characteristic can not adapt in this application scenarios, and adopt
With leaky cable be used for such scene wireless signal cover, its signal radiation uniformly and not by tunnel flexibility and gradient etc. because
The influence of element, while various tunnel environments are adapted to, undoubtedly optimal selection.
With the development of information technology, people require also more and more higher for the demand and signal quality of communication, sew same
The application scenarios of shaft cable are also more and more, covered in more important occasion and system using leakage coaxial cable as wireless signal
Lid, its communication signal quality, signal coverage rate and system reliability are always emphasis of concern.By specific ring in tunnel
The influence of some constructions lack of standardization when border and leakage cable laying, with the increase of leakage cable usage time, leakage cable occurs unavoidably
Aging, metaboly, joint are also possible to loosen, and the passive device sealed in link is it can also happen that failure, leakage cable physics are opened
If the untreated proper transmission for also occurring into water phenomenon and then influenceing signal of the waterproof at disconnected place, and leak cable running status and
Operational factor is typically what can not directly be learnt, so leaks cable link and once breaks down, certainly will influence whether its bearing system
Proper communication, or even cause call drop, if its carrying is railtrain dispatch system or subway signal system, this will be straight
The traffic safety for jeopardizing train is connect, while the fault location in later stage and rectifying and improving are also wasted time and energy, it will in the long period
The normal operation of follow-up train is had influence on, therefore the running status to leaking cable is monitored in real time, is found and is accurately reported in time
Cable failure is leaked, the reliability covering to wireless communication signals is significant.
At present, the failure problems occurred for leakage cable link, it is mostly offline rear manual testing, flow is substantially：It was found that ask
Inscribe → declare processing → please put investigation → analysis reason → positioning failure → rectification → repetition measurement to confirm, whole process is cumbersome, time-consuming
Arduously, and hysteresis quality be present.And the equipment that on-line checking leakage cable can be realized in the market, function is all more single, is typically only capable of
Test standing wave, it is impossible to which accurate response leaks the running status of cable, even if standing wave alerts, confirmation, which has trouble point, can not also mark out
Come, and due to also needed at failure judgement point position with reference to other information (such as：The feed line length of access --- influence failure
Positioning precision, the electric parameter of monitoring leakage cable, standing wave crest frequency --- influence fault location accuracy), i.e., enabled mark out is come,
Its degree of accuracy is also required to professional and technical personnel and confirmed again according to engineering experience.More also it is combined using main frame with slave
Monitoring mode, its slave lay it is cumbersome, also do not possess monitoring the full performance function of link, and by environmental factor change influenceed compared with
Greatly, intelligent processing method analysis can not be carried out again to testing result, so its effect is unsatisfactory.
The content of the invention
In view of the above-mentioned problems, the invention provides one kind to leak cable real time on-line monitoring system, it can solve existing leakage cable prison
Function existing for examining system is single, can not carry out the comprehensive real time on-line monitoring of system to the running status and operational factor for leaking cable
The problem of.
Its technical scheme is that one kind leakage cable real time on-line monitoring system, it includes network management center, and the network management center passes through
Transmission channel electricly connects the monitoring main frame located at each site communication computer room or repeater, and the network management center is preset with described each
The physical location information of website, the monitoring main frame of each website are pre- by unique physical MAC address and the network management center
If the physical location information of corresponding website matched one by one, each monitoring main frame is used for monitoring and test leakage cable link
Operational factor is simultaneously existed obtained operational factor result is tested by the transmission channel to the network management center, its feature
In：The network management center is analyzed and processed to the operational factor result and judges leakage cable link according to analysis processing result
Running status, the monitoring main frame are included with lower module,
RF detection module, for receiving testing result signal to leakage cable link transmissions detection signal and from leakage cable link；
Signal inserts module, for by detection signal feed-in leakage cable link to be measured；
Path selecting module, for selecting leakage cable chain to be detected by the closure to radio frequency path or disconnection control
Road；
Message processing module, for being controlled to RF detection module, path selecting module, while it is used for cooperation
The monitoring main frame of adjacent sites carries out the every operation of Lou cable link to leaking the monitoring of cable link operational factor according to testing result
The test of parameter and to test result carry out initial analysis processing；
Transport module, for the data after described information processing module preliminary treatment to be fed back simultaneously by cable interface agreement
The network management center is given through the transmission channel；
Power module, for providing adaptation for the RF detection module, path selecting module and message processing module
Voltage；
The signal insertion module inserts module with base station, leakage cable link connection and the signal respectively by radio frequency cable
It is connected with the path selecting module by radio frequency cable, described information processing module is detected by signal wire and the radio frequency respectively
Module, path selecting module electricly connect, and are connected between the RF detection module and the path selecting module by radio frequency cable
Connect, the network management center is electricly connected by the transmission channel and the transport module.
Further, the test of the leakage cable link operational factor includes voltage standing wave ratio test, fault location test, chain
Road loss test and plant capacity detection.
Further, described information processing module is controlled to RF detection module specifically refers to control selections and to detect
Parameter, the intensity of the detection signal that sends of control RF detection module, the cycle for sending detection signal and frequency bandwidth.
Further, described information processing module is controlled to RF detection module also includes controlling the radio frequency inspection
Survey the cycle that module is calibrated and calibrated automatically automatically.
Further, described information processing module is controlled to the path selecting module specifically refers to the path choosing
Module is selected to be instructed to control the closure of corresponding leakage cable link RF path according to what the described information processing module received was sent
Or disconnect and accordingly leak the radio frequency path closure of cable link or disconnect the time kept and period distances.
Further, the monitoring main frame of described information processing module cooperation adjacent sites is to leaking cable link operational factor
Monitoring be included in the detection signal progress for carrying out being sent in the link load test process for the monitoring main frame of adjacent sites
The adaptation for receiving or feeding back.
Further, the monitoring main frame of described information processing module cooperation adjacent sites is to leakage cable link operation ginseng
Several monitorings also includes carrying out data preliminary comparison's confirmation for the fault location in short section.
Further, the RF detection module, signal insertion module, path selecting module, message processing module and electricity
Source module is individually encapsulated using ambroin and/or metal shell.
Further, the signal insertion module is that combiner or coupling are sown into any of device.
Further, the path selecting module is a coaxial matrix switch.
Further, the transmission channel including electricity turn optical module, optical fiber and light turn electric module, the electricity turn optical module with
The transport module data connection, the electricity turn optical module and are connected by optical fiber with the electric module transfer of the light turn, and the light turns
Electric module is connected with network management center's data.
Further, the network management center is provided with leakage cable link real-time running state analysis module, the link operation of leakage cable becomes
Potential analysis module, the leakage cable link real-time running state analysis module pass through preliminary to the message processing module through monitoring main frame
Operational factor result after processing enters Row-Action algorithm, the adjustment of optimized algorithm analyzes the running status of disconnected leakage cable link in real time
And analyzed abnormal state information, judged the fault type of abnormality；The leakage cable link operation trend analysis module
For same link operational factor is stored and tracked and contrast the change of each operational factor of same link in time with
Variation tendency is analyzed, advanced warning is sent for the link that operational factor progressively deteriorates.
Further, the network management center is additionally provided with interference signal analysis module, for the non-equipment work(to receiving
The interference signal of rate signal carries out source and impact analysis and judges whether to believe interference according to source and impact analysis result
Number alerted and handled.
A kind of beneficial effect for leaking cable real time on-line monitoring system of the present invention is：
(1) its system deployment is simple, networking is convenient, more to realize by the path selecting module being arranged in monitoring main frame
Path monitors, and can realize that multi-path detects by intervals and sequential loop, more logical so as to greatly save
The number of devices of road monitoring, saves cost；
(2) it can remotely realize the on-line monitoring to leakage cable link operational factor and running status, by leaking cable link
Real-time running state analysis module is accurately positioned to the trouble point of the leakage cable link under abnormality, and carries out failure correlation
Descriptive analysis, fault type is shown, propose that maintenance is suggested, be that the service work of maintenance personal improves facility；By leaking cable link
Operation trend analysis module can also store Each point in time leakage cable link running state information and parameter information, and by same
The intelligent processing method of the operational factor of link different time, analyze the variation tendency of link, and the leakage cable link to deteriorating
Send alarm.
Brief description of the drawings
Fig. 1 leaks cable real time on-line monitoring system schematic diagram for the present invention is a kind of；
Fig. 2 leaks cable real time on-line monitoring system schematic diagram for the present invention is a kind of；
Fig. 3 leaks cable real time on-line monitoring system networking schematic diagram for the present invention is a kind of；
Fig. 4 is monitored test leakage cable link operation for monitoring main frame in a kind of leakage cable real time on-line monitoring system of the present invention
The flow chart of parameter；
Fig. 5 is that a kind of network management center leaked in cable real time on-line monitoring system of the present invention is analyzed operational factor result
Handle and the flow chart of the running status of leakage cable link is judged according to analysis processing result；
Fig. 6 is the leakage cable chain of voltage standing wave ratio test, fault location test and link load test in the embodiment of the present invention
Road system schematic.
Reference：10- network management centers, 11- leakage cable link real-time running state analysis modules, 12- leakage cable link operations
Trend analysis module, 13- interference signal analysis modules, 20- transmission channels, 21- electricity turn optical module, and 22- light turns electric module, 30-
Monitor main frame, 31- RF detection modules, 32- signals insertion module, 33- path selecting modules, 34- message processing modules, 35-
Transport module, 36- power modules.
Embodiment
See Fig. 1, a kind of leakage cable real time on-line monitoring system of the present invention, it includes network management center 10, and network management center 10 passes through
Transmission channel 20 electricly connects the monitoring main frame 30 located at each site communication computer room or repeater, and network management center 10 is preset with each station
The physical location information of point, the monitoring main frame 30 of each website are default right with network management center 10 by unique physical MAC address
The physical location information of website is answered to be matched one by one, each monitoring main frame 30 is used for the operational factor of monitoring and test leakage cable link
And the operational factor result for obtaining test is transferred to network management center 10 by transmission channel 20；Wherein leak cable link operational factor
Test include voltage standing wave ratio test, fault location test, link load test and plant capacity detect；Network management center 10 is right
Operational factor result is analyzed and processed and the running status of leakage cable link is judged according to analysis processing result, and monitoring main frame 30 wraps
Include with lower module,
RF detection module 31, for receiving testing result letter to leakage cable link transmissions detection signal and from leakage cable link
Number；
Signal inserts module 32, for by detection signal feed-in leakage cable link to be measured；
Path selecting module 33, for selecting leakage cable chain to be detected by the closure to radio frequency path or disconnection control
Road；
Message processing module 34, for being controlled to RF detection module 31, path selecting module 32, while for assisting
Allotment closes the monitoring main frame of adjacent sites to leaking the monitoring of cable link operational factor, and it is each according to testing result to carry out Lou cable link
The test of operational factor and initial analysis processing is carried out to test result；
Transport module 35, for the data after the preliminary treatment of message processing module 34 to be fed back simultaneously by cable interface agreement
Network management center 10 is transferred to through transmission channel 20；
Power module 36, it is a power supply adaptor, for for RF detection module 31, path selecting module 33 and information
Processing module 34 provides adaptation voltage；
Signal inserts module 32 and inserts module 32 with leading to base station, leakage cable link connection and signal respectively by radio frequency cable
Road selecting module 33 is connected by radio frequency cable, and message processing module 34 passes through signal wire and RF detection module 31, path respectively
Selecting module 33 electricly connects, and is connected between RF detection module 31 and path selecting module 33 by radio frequency cable, network management center
10 are electricly connected by transmission channel 20 and transport module 35.The leakage cable on-line monitoring system of the present invention can carry out Multi-channel monitoring,
By the path selecting module of inside, multi-way detecting is realized by certain time interval and sequential loop, is greatlyd save more
The detection device quantity of road monitoring, saves cost；And the time interval of cycle detection and order can voluntarily be adjusted by user,
It can accelerate to circulate in Frequent Troubles period, intercycle can be extended in normal operation period to reduce equipment power dissipation, improve equipment
Service life.
In the present embodiment monitoring host computer employ subway station four enter four go out eight ports design, signal insertion module 32 be provided with
Four, four signal insertion modules 32 are respectively equipped with an an input port IN and output port OUT, wherein input port
IN respectively connects base station, output port OUT connections leakage cable.Group is carried out using the leakage cable real time on-line monitoring system of the present embodiment
During net, the monitoring main frame 30 located at each site communication computer room or repeater passes through transmission channel and the phase of network management center 10 respectively
Even, Fig. 3 is seen.
Wherein, message processing module 34 is controlled to RF detection module 31 specifically refers to the control selections ginseng to be detected
The intensity for the detection signal that number, control RF detection module are sent, the cycle for sending detection signal and frequency bandwidth；And control
The cycle that frequency modulation detection module 31 processed is calibrated and calibrated automatically automatically.
Message processing module 34 is controlled to path selecting module 33 specifically refers to path selecting module 33 according to reception
To message processing module 34 instruction that sends control the closure of corresponding leakage cable link RF path or disconnection and corresponding leakage
The radio frequency path closure of cable link disconnects the time kept and period distances.
And the monitoring main frame of the cooperation adjacent sites of message processing module 34 is to the monitoring bag of leakage cable link operational factor
The detection signal that sends of monitoring main frame for adjacent sites in link load test process is carried out is included to be received or fed back
Adaptation；And carry out data preliminary comparison's confirmation for the fault location in short section.
RF detection module 31, signal insertion module 32, path selecting module 33, message processing module 34 and power module
36 are individually encapsulated using ambroin and/or metal shell, and the anti-of each module can be effectively improved using independent encapsulation
Dirt, waterproof and anti-electrical property, and improve measuring stability.
Signal insertion module 32 is that combiner or coupling are sown into any of device；Path selecting module 33 is a coaxial square
Battle array switch；Transmission channel 20 turns optical module 21, optical fiber and light including electricity and turns electric module 22, and electricity turns optical module 21 and transport module 35
Data connect, and electricity turns optical module 21 and turns the 22 defeated connections of electric module biography by optical fiber and light, and light turns electric module 22 and network management center 10
Data connect.
Network management center 10 is provided with leakage cable link real-time running state analysis module 11, leakage cable link operation trend analysis module
12 and interference signal analysis module 13；Cable link real-time running state analysis module 11 is leaked to pass through to the letter through monitoring main frame 30
Operational factor result after breath processing module 34 preliminary treatment enters Row-Action algorithm, disconnected leakage is analyzed in the adjustment of optimized algorithm in real time
The running status of cable link and the fault type for being analyzed abnormal state information, being judged abnormality；Leak the operation of cable link
Trend analysis module 12 is used to same link operational factor is stored and tracked and contrasts each operational factor of same link to exist
Temporal change sends advanced warning to analyze variation tendency for the link that operational factor progressively deteriorates；Interference signal point
Analysis module 13 be used to carrying out the interference signal of non-plant capacity signal received source and impact analysis and according to source and
Impact analysis result is alerted and handled to interference signal to judge whether.
Below in conjunction with the accompanying drawings, the course of work of present system is specifically described：
The path selecting module 33 of site communication computer room or the monitoring main frame 30 of repeater is arranged at according to the letter received
The closure or disconnection and corresponding leakage cable link of cable link RF path are accordingly leaked in the instruction that breath processing module 34 is sent to control
Radio frequency path closure or disconnect the time kept and period distances, while RF detection module 31 is according to message processing module
The instruction selection parameter to be detected simultaneously inserts module 32 to corresponding leakage cable chain by path selecting module 33 and corresponding signal
Road periodically sends out detection signal of the frequency beyond system operating frequency, then receives testing result signal simultaneously from leakage cable link
Testing result signal is back to message processing module 34, sees Fig. 4, message processing module 34 according to the detection signal sent and
The testing result signal received is examined to carry out voltage standing wave ratio test, fault location test, link load test and plant capacity
Survey so as to obtain corresponding operational factor result；Wherein have for the operational factor of voltage standing wave ratio test and fault location test
Body shows as receiving the reflected signal of detection information, is designated as S11Parameter；Have for the operational factor of link load test
Body surface face is the reception to closing on the detection signal of main frame transmitting, is designated as S21Parameter, and can not receive and close in leakage cable end
At host supervision signal, itself transmission signal is received, is designated as S11Parameter；Detected for plant capacity, the phase of RF detection module 31
The size of power output is measured when the signal in an oscillograph or power meter, exported by receiving device；Information processing mould
Block 34 to above-mentioned operational factor result collect arrangement again, and by transport module 35, transmission channel 20 to network management center 10
Upload chart and operational factor result data bag；Carry out voltage standing wave ratio test, fault location test, link load test and
Before plant capacity detection, message processing module 34 controls RF detection module 31 to be calibrated, so as to further improve survey
Try precision.
After seeing that Fig. 5, network management center 10 receive operational factor result data bag, first according to the characteristic of operational factor to fortune
Row parametric results data are classified, then website, testing time and type belonging to are entered to sorted operational parameter data
Stored after row secondary classification, the circulation contrast same link of leakage cable link operation trend analysis module 12 of network management center 10 is respectively run
Parameter previous moment change to analyze variation tendency, so as to draw the link running status trend analysis result, for fortune
The link that row parameter progressively deteriorates sends advanced warning；The leakage cable link real-time running state analysis module 11 of network management center 10 is then
Whether normal analyze current operational factor, judge after algorithm process is carried out if belonging in normal range (NR) to operational factor current
Running state analysis result, the shape after progress ALM if operational factor is abnormal and to misoperation parameter progress algorithm process
Into abnormal information, abnormal information judges current operating conditions analysis result after optimized processing again；Meanwhile network management center 10 is dry
The interference signal for disturbing non-plant capacity signal of the signal analysis module 13 to receiving carries out source and impact analysis, and according to next
Source and impact analysis result are alerted and handled to interference signal to judge whether, if interfering signal power is exceeded, are carried out
ALM simultaneously carries out forming abnormal information after algorithm process, and abnormal information judges current operating conditions after optimized processing again,
Judge current operating conditions after processing is directly optimized if interference power of information is not exceeded；Algorithm process therein and optimization
Processing, mainly by being sorted out the characteristic of misoperation parameter to analyze, and tentatively judges the specific position of link failure
Put, if so leaked the possible cause that cable breaks down on leakage cable, then the design parameter corresponding to failure cause would be assessed simultaneously
Secondary-confirmation is carried out, the experience of the accumulation of on-the-spot test all the year round of last foundation leakage cable engineering project, with reference to leakage cable characteristic and is preset
Parameter optimizes to conclusion, to realize that precision is alarmed；And the Connecting quantity of corresponding website link and used is preset
Wire jumper, feeder line, passive device and the characterisitic parameter for leaking cable, and testing result is analyzed according to engineering experience algorithm optimization, in 200m
The positioning precision of interior achievable Centimeter Level, the fault location of decimeter grade can be achieved in 2000m.
During present invention leakage cable real time on-line monitoring system use, the test of the voltage standing wave ratio that is applied to, fault location
Test, link load test and plant capacity Cleaning Principle are prior art, are only briefly described below；
(1) voltage standing wave ratio test (VSWR) link transmission medium uniformity, the efficiency of transmission of signal in link is monitored, and
Thus it can influence to assess to caused by the size of trouble point to system.System is connected as shown in fig. 6, being provided with A, B, C tri- in Fig. 6
Individual website, standing wave can be detected simultaneously in the same links at two of interconnection stations and be independent of each other；Such as test this link of A3-B1
Standing wave, A33 and B11 can functionally test simultaneously, particularly short section, and monitoring main frame can set during VSWR inspections
Test frequency in automatic seeking point, it is automatic to mark standing wave peak and top set, and all values that are above standard are marked by certain bandwidth
The point of (nominal value can edit input on demand)；
(2) fault location (TDR) test is abnormity point and trouble point in positioning link, is accurately positioned the event occurred in link
Barrier point position and number, and pass through the concrete numerical value failure judgement point order of severity., typically can be according to VSWR during fault location test
The maximum test arrowband of test result selection standing wave value tested.System connects as shown in fig. 6, this chain of test A3-B1
The standing wave on road, A33 and B11 can meet that particularly short area can also realize that A and B test number result mutually compares automatically, enter one
Step improves positioning precision.Monitor main frame carry out TDR positioning when can in the measuring distance of setting automatic seeking point, mark TDR automatically
Peak and top set, and mark the point of all values that are above standard (nominal value can edit input on demand) (in one fixed width only
Mark is a bit).During due to test, calculated inside the time of test signal feedback by the light velocity, process is exactly test letter
Instrument is partly reflected back after number running into trouble point, i.e.,
D=0.5tck
T is checks signal time of return, and c is the light velocity in vacuum, and k is average speed than (light is in channel with passing in a vacuum
Broadcast the ratio of speed), to make test result more accurate, leakage cable link real-time running state analysis module 11 is according to improving link
Information (including the use of each specification feeder line information, feed line length information, passive device information and passive device quantity information)
The average fast ratio of outgoing link can be assessed, can more accurate fault point.When optimized algorithm judges that average speed should not be used herein
When determining fault location information than (first substantially judging that positional information junction link connection determines with specific reference to time of return),
Segmentation speed will be used, and than method, fault point, then fault location is (herein for the description of general link connection, including first
Feeder line, the feeder line of second and the leakage cable of the 3rd, concrete condition need to specifically preset)：
Trouble point is on leakage cable, and d=0.5tck when feeder line is shorter
Trouble point is on leakage cable, and d=0.5t3ck3+L2+L1 when feeder line is longer
Trouble point d=0.5t1ck1 on first feeder line
Trouble point d=0.5t2ck2+L1 on second feeder line
C is the light velocity in vacuum, and k is average fast ratio, and the time is drawn by radio-frequency module feedback and (exported by detection signal by main frame
Port output starts to there is output port reception), t is the detection signal time of return of radio-frequency module feedback, and t1 is at first
The time that feeder line returns, t2 are the time ... ... that second feeder line returns, and tn is the time that n-th feeder line returns；K1 is first
The default fast ratio of section feeder line, L1 are first feed line length, and k2 is the default fast ratio of second segment feeder line, and L2 is that first feeder line is grown
Degree ... ..., kn are that n-th feeder line presets fast ratio, and Ln is n-th feed line length.Except what is fed back by average speed than pressing radio-frequency module
Outside detection signal time of return calculates, the time of return in other all calculating formulas is calculated by formula below：
Tn=t-t1ck1-t2ck2-t2ck3- ...-tnckn-1
Said process is the process that position location accuracy is improved in engineering experience optimization analysis trouble point.
Specifically have：
A) the test arrowband for selecting standing wave value maximum according to VSWR test result is tested, and improves measuring accuracy；
B) realize that A and B test number result mutually compares, further improve positioning precision；
C) judge to compare calculating location information using average speed ratio or segmentation speed；
D) the fault location formula and actual conditions that incorporation engineering experience is sorted out calculate.
(3) link load test monitors the attenuation change in link in real time, and link operation is assessed according to link load size
Whether state is normal, is also adjusted to plant capacity and provides reference frame.System is connected as shown in fig. 6, by closing on detection letter
Number reception detect link load, such as：Test the loss of A3B1 links, A stations path selecting module selection A3 paths, B stations
B1 paths are selected, the monitoring main frame positioned at A stations sends signal PA, and then the monitoring main frame at B stations receives A by B1 mouths and stood through A3B1 chains
Detection signal power P AB behind road, then link load α=PA-PAB, similarly, detection signal PB can be also sent by B stations, is stood by A
PBA is received, then link load α=PB-PBA.Gained α values finally carry out chain by Processing Algorithm according to the default link informations of A3B1
Result and preceding status data obtained by the budget of road are analyzed, and comprehensive assessment is carried out to residual quantity by optimized algorithm；Leaking
Cable head and the tail without monitoring main frame at using single port survey loss principle combination optimized algorithm estimated.
(4) plant capacity monitors：Plant capacity is monitored in real time, it is whether normal with monitoring device running status, together
When monitoring and automatic identification other signals source caused by or third order intermodulation caused by adjacent frequency interference, co-channel interference.Detection module
By carrying out monitoring of the Display Realization to plant capacity to signal power and frequency.The plant capacity received due to monitoring main frame
Signal is indirectly testing result, and normal monitoring result will be handled test result again by Processing Algorithm.Its principle is big
Cause be：
Power (the P1)+front end loss (P2) for plant capacity (P)=receive, wherein front end loss value is by Processing Algorithm root
It is calculated according to actual conditions.
A kind of leakage cable real time on-line monitoring system of the invention, its automaticity is high, and user right is big, can support more drive tests
Examination, and detection function is more, measuring accuracy is high, and the running state analysis of leakage cable link combines abundant leakage cable project testing warp
Test, high to the data intelligent degree for the treatment of of detection feedback, fault verification and basis on location are comprehensive.
Claims (13)
1. one kind leakage cable real time on-line monitoring system, it includes network management center, and the network management center passes through the automatically controlled company of transmission channel
Each site communication computer room or the monitoring main frame of repeater are arranged in, the network management center is preset with the physical location of each website
Information, the monitoring main frame of each website pass through unique physical MAC address and the network management center default corresponding website
Physical location information is matched one by one, and each monitoring main frame is used for the operational factor of monitoring and test leakage cable link and will surveyed
The operational factor result for trying to obtain is by the transmission channel to the network management center, it is characterised in that：In the webmaster
The heart is analyzed and processed to the operational factor result and the running status of leakage cable link is judged according to analysis processing result, described
Monitoring main frame is included with lower module,
RF detection module, for receiving testing result signal to leakage cable link transmissions detection signal and from leakage cable link；
Signal inserts module, for by detection signal feed-in leakage cable link to be measured；
Path selecting module, for selecting leakage cable link to be detected by the closure to radio frequency path or disconnection control；
Message processing module, for being controlled to RF detection module, path selecting module, and meanwhile it is adjacent for cooperation
The monitoring main frame of website carries out Lou cable link items operational factor to leaking the monitoring of cable link operational factor according to testing result
Test and to test result carry out initial analysis processing；
Transport module, for the data after described information processing module preliminary treatment to be fed back by cable interface agreement and through institute
Transmission channel is stated to the network management center；
Power module, for providing adaptation voltage for the RF detection module, path selecting module and message processing module；
The signal insertion module inserts module and institute with base station, leakage cable link connection and the signal respectively by radio frequency cable
State path selecting module to connect by radio frequency cable, described information processing module detects mould by signal wire and the radio frequency respectively
Block, path selecting module electricly connect, and are connected between the RF detection module and the path selecting module by radio frequency cable,
The network management center is electricly connected by the transmission channel and the transport module.
A kind of 2. leakage cable real time on-line monitoring system according to claim 1, it is characterised in that：The leakage cable link operation
The test of parameter includes voltage standing wave ratio test, fault location test, link load test and plant capacity detection.
A kind of 3. leakage cable real time on-line monitoring system according to claim 2, it is characterised in that：Described information processing module
The parameter for specifically referring to control selections and being detected is controlled to RF detection module, the detection that control RF detection module is sent
The intensity of signal, the cycle for sending detection signal and frequency bandwidth.
A kind of 4. leakage cable real time on-line monitoring system according to claim 3, it is characterised in that：Described information processing module
The week for also including controlling the RF detection module to be calibrated and calibrated automatically automatically is controlled to RF detection module
Phase.
A kind of 5. leakage cable real time on-line monitoring system according to claim 2, it is characterised in that：Described information processing module
The path selecting module is controlled and specifically refers to the path selecting module according to the described information processing mould received
The closure or the radio frequency path of disconnection and corresponding leakage cable link of cable link RF path are accordingly leaked in the instruction that block is sent to control
Closure disconnects the time kept and period distances.
A kind of 6. leakage cable real time on-line monitoring system according to claim 2, it is characterised in that：Described information processing module
The monitoring main frame of cooperation adjacent sites is included in the monitoring for leaking cable link operational factor carries out the link load test
During for adjacent sites the detection signal that sends of the monitoring main frame adaptation that is received or fed back.
A kind of 7. leakage cable real time on-line monitoring system according to claim 6, it is characterised in that：Described information processing module
Monitoring of the monitoring main frame of cooperation adjacent sites to leakage cable link operational factor also includes the fault location for short section
Carry out data preliminary comparison's confirmation.
8. according to any described a kind of leakage cable real time on-line monitoring system in claim 1~7, it is characterised in that：It is described to penetrate
Frequency detection module, signal insertion module, path selecting module, message processing module and power module using ambroin and/
Or metal shell is individually encapsulated.
A kind of 9. leakage cable real time on-line monitoring system according to claim 8, it is characterised in that：The signal inserts module
For any of combiner or coupling inserter.
A kind of 10. leakage cable real time on-line monitoring system according to claim 8, it is characterised in that：The path selects mould
Block is a coaxial matrix switch.
A kind of 11. leakage cable real time on-line monitoring system according to claim 8, it is characterised in that：The transmission channel bag
Include electricity and turn optical module, optical fiber and light turn electric module, the electricity turns optical module and is connected with the transport module data, and the electricity turns light
Module turns electric module transfer with the light by optical fiber and is connected, and the light turns electric module and is connected with network management center's data.
A kind of 12. leakage cable real time on-line monitoring system according to claim 2, it is characterised in that：The network management center sets
There are leakage cable link real-time running state analysis module, leakage cable link operation trend analysis module, the leakage cable link real time execution
State analyzing module to the operational factor result after monitoring the message processing module preliminary treatment of main frame by carrying out processing calculation
The adjustment of method, optimized algorithm analyzes the running status of disconnected leakage cable link in real time and abnormal state information is analyzed, judged
The fault type of abnormality；The leakage cable link operation trend analysis module is used to store same link operational factor
With track and contrast the change of each operational factor of same link in time to analyze variation tendency, for operational factor progressively
The link of deterioration sends advanced warning.
A kind of 13. leakage cable real time on-line monitoring system according to claim 2, it is characterised in that：The network management center is also
Provided with interference signal analysis module, the interference signal for the non-plant capacity signal to receiving carries out source and impact analysis
And interference signal is alerted and handled to judge whether according to source and impact analysis result.
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| CN201710672254.1A CN107395459A (en) | 2017-08-08 | 2017-08-08 | One kind leakage cable real time on-line monitoring system |
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| CN201710672254.1A CN107395459A (en) | 2017-08-08 | 2017-08-08 | One kind leakage cable real time on-line monitoring system |
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| CN201710672254.1A Pending CN107395459A (en) | 2017-08-08 | 2017-08-08 | One kind leakage cable real time on-line monitoring system |
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Application publication date: 20171124 |