CN110311728A - The trouble shooting processing method of cable TV two-way network, system and storage medium - Google Patents
The trouble shooting processing method of cable TV two-way network, system and storage medium Download PDFInfo
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- CN110311728A CN110311728A CN201910263183.9A CN201910263183A CN110311728A CN 110311728 A CN110311728 A CN 110311728A CN 201910263183 A CN201910263183 A CN 201910263183A CN 110311728 A CN110311728 A CN 110311728A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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Abstract
The trouble shooting processing method of cable TV two-way network provided by the invention, system and storage medium, which comprises the positive level that receives for obtaining CM cable modem is A；And obtaining the reversed launching electrical level of CM cable modem is B；And, low-and high-frequency level difference (X-Y) value is obtained by afterbody active equipment output end level and-CM cable modem end level；Judge the low-and high-frequency level difference (X-Y) being calculated whether in the threshold range of pre-set standard low-and high-frequency level difference；If not existing, connector is prompted to break down, route distribution network configuration figure according to the pre-stored data determines failure joint location.The connector that goes wrong can be quick and precisely searched by low-and high-frequency level difference Comparison Method, achieve the purpose that quick Network Search joint fault and cable fault, accelerate maintenance efficiency, quickly searches failure for a line maintenance personnel and provide convenience, manpower and material resources are saved, maintenance cost is reduced.
Description
Technical field
This application involves broadband cable network technical field, in particular to a kind of failure of cable TV two-way network
Check processing method, system and storage medium.
Background technique
The abbreviation of HFC:Hybrid Fiber-Coaxial, i.e. hybrid fiber coax.It is a kind of economical and practical
Integrated services digital Broadband network access technology.As shown in Figure 1, HFC is usually by fiber optic backbone, coaxial cable branch line and user's wiring
Network three parts composition, the programme signal come out from cable TV station first become optical signal and transmit on main line；To user area
Optical signal is converted into electric signal afterwards, user is sent to by coaxial cable after the allocated device distribution.It and early stage CATV coaxial electrical
The difference of cable network essentially consists in, and optical signal transmission fiber is used on main line, need to complete electricity-light conversion in front end, enter
Light-electricity conversion is completed behind user area.
Traditional cable television network is exactly one-way transmission, is the transmission of downlink broadcast formula.Current cable TV network
It joined upstream device, two-way non-synchronous transmissions may be implemented.It, can be light and due to the high bandwidth advantage of cable TV network
It is easy to do to the user bandwidth of 10M or more, is broadband solution more economical at present.Bilateral network refer to by a lower communication road and
One uploads what channel was constituted, and the cable network with two-way mutual transfer function is now usually used in communication network, cable television
Network etc..
In the failure of analysis cable TV two-way network, discovery joint fault accounting is up to 70%, and once someone's industry plays
Referred to as " cable TV two-way network engineering is exactly connector engineering ", on the one hand illustrates that the connector of cable TV network is more, another party
Face also illustrates that carrying out connector is the key that carry out wired bilateral network.
Because cogging problem causes, reversed invasive procedure is exceeded and CM (cable for cable TV network in the prior art
Modem) launching electrical level and to receive level not normal, thus " network speed is slow " " the frequent suspension " that causes user terminal to be reflected
Phenomenon of the failure, a line maintenance personnel face maximum puzzlement is how to search out " harmful connector " from the numerous connectors in chain road, pass
System troubleshooting method can only expend a large amount of manpower and material resources by checking, be segmented detection means trouble-shooting point step by step, time-consuming and laborious,
Maintenance cost is high.
Summary of the invention
One of the embodiment of the present application is provided at a kind of cable TV HFC (hybrid fiber coax) net level difference comparison
Reason method, system and storage medium.The present invention can quick and precisely search the connector that goes wrong by low-and high-frequency level difference Comparison Method,
Achieve the purpose that quick Network Search joint fault and cable fault, accelerate maintenance efficiency, is checked quickly fastly for a line maintenance personnel
It looks for failure to provide convenience, saves manpower and material resources, reduce maintenance cost.
A kind of trouble shooting processing method of cable TV two-way network, wherein include:
S1, the threshold range that standard low-and high-frequency level difference is stored in advance；
S2, the route distribution web frame figure that building are stored in advance；
S3, the positive level that receives for obtaining CM cable modem are A；And acquisition CM cable modem is reversed
Launching electrical level is B；
S4, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output end is compared by low-and high-frequency level difference
Level and (positive level H+ inverse injection level L)-CM cable modem end level and (reception level A+ launching electrical level
B), low-and high-frequency level difference (X-Y) value is obtained；
Whether the low-and high-frequency level difference (X-Y) that S5, judgement are calculated is in pre-set standard low-and high-frequency level difference
In threshold range；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data determines
Failure joint location.
The trouble shooting processing method of the cable TV two-way network, wherein the step S5 further include:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit occur
Or weak breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted to occur
Short-circuit or weak short circuit phenomenon reminds and checks whether joint shell aoxidizes, whether cable outer layer twine aoxidizes and whether check cable
Aging.
The trouble shooting processing method of the cable TV two-way network, wherein the threshold range in the step S1
For (0,20).
The trouble shooting processing method of the cable TV two-way network, wherein the step S4 is specifically included:
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D:
The sum of total losses comprising branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal,
Reversed uplink cable waste is Y；And it is A, CM cable modem that setting CM cable modem forward direction, which receives level,
Reversed launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ is reversed
Injection level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-
Y) value.
The trouble shooting processing method of the cable TV two-way network, wherein the step S5 further include:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in cable modem to building；
For low-and high-frequency level difference (X-Y) value not in the threshold range in pre-set standard low-and high-frequency level difference
Cable modem prompts only to check the connector and circuit pack that it is exclusively enjoyed.
A kind of trouble shooting processing system of cable TV two-way network, wherein include: processor, memory and communication
Bus；
The trouble shooting processing for the cable TV two-way network that can be executed by the processor is stored on the memory
Program；
The communication bus realizes the connection communication between processor and memory；
The processor realizes following steps when executing the trouble shooting processing routine of the cable TV two-way network:
S1, the threshold range that standard low-and high-frequency level difference is stored in advance；
S2, the route distribution web frame figure that building are stored in advance；
S3, the positive level that receives for obtaining CM cable modem are A；And acquisition CM cable modem is reversed
Launching electrical level is B；
S4, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output end is compared by low-and high-frequency level difference
Level and (positive level H+ inverse injection level L)-CM cable modem end level and (reception level A+ launching electrical level
B), low-and high-frequency level difference (X-Y) value is obtained；
Whether the low-and high-frequency level difference (X-Y) that S5, judgement are calculated is in pre-set standard low-and high-frequency level difference
In threshold range；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data determines
Failure joint location.
The trouble shooting processing system of the cable TV two-way network, wherein the processor executes described wired
Following steps are also realized when the trouble shooting processing routine of TV bilateral network:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit occur
Or weak breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted to occur
Short-circuit or weak short circuit phenomenon reminds and checks whether joint shell aoxidizes, whether cable outer layer twine aoxidizes and whether check cable
Aging.
The trouble shooting processing system of the cable TV two-way network, wherein the processor executes described wired
Following steps are also realized when the trouble shooting processing routine of TV bilateral network:
Threshold range in the step S1 is (0,20)；
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D:
The sum of total losses comprising branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal,
Reversed uplink cable waste is Y；And it is A, CM cable modem that setting CM cable modem forward direction, which receives level,
Reversed launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ is reversed
Injection level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-
Y) value.
The trouble shooting processing system of the cable TV two-way network, wherein the processor executes described wired
Following steps are also realized when the trouble shooting processing routine of TV bilateral network:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in cable modem to building；
For low-and high-frequency level difference (X-Y) value not in the threshold range in pre-set standard low-and high-frequency level difference
Cable modem prompts only to check the connector and circuit pack that it is exclusively enjoyed.
A kind of storage medium, wherein the storage medium is stored with computer instruction, when the computer instruction is performed
When, realize the trouble shooting processing method of described in any item cable TV two-way networks.
A kind of trouble shooting processing method of cable TV two-way network provided by the invention, system and storage medium lead to
Excessively high low-frequency electrical adjustment Comparison Method can quick and precisely search the connector that goes wrong, and reach quick Network Search joint fault and cable
The purpose of failure, accelerates maintenance efficiency, quickly searches failure for a line maintenance personnel and provides convenience, saves manpower object
Power reduces maintenance cost.
Detailed description of the invention
The application will further illustrate that these exemplary embodiments will be carried out by attached drawing in a manner of exemplary embodiment
Detailed description.These embodiments are simultaneously unrestricted, and in these embodiments, being identically numbered indicates identical structure, in which:
Fig. 1 is HFC access net typical structure schematic diagram.
Fig. 2 is the data communication system structural schematic diagram of HFC.
Fig. 3 is a kind of flow chart of the trouble shooting processing method embodiment of cable TV two-way network of the present invention.
Fig. 4 is reasonable low-and high-frequency level difference (X-Y) value and CM (cable modem) level relationship table structure figure.
Fig. 5 is CM tables of data derived from certain test block CMTS operation monitoring Integrated Network Management System in embodiment of the present invention method
Figure.
Fig. 6 is that web frame is distributed in certain test block in embodiment of the present invention method.
Fig. 7 is a kind of principle of work and power of the trouble shooting processing system preferred embodiment of cable TV two-way network of the present invention
Block diagram.
Specific embodiment
A kind of trouble shooting processing method of cable TV two-way network provided in an embodiment of the present invention, system and storage are situated between
Matter, in order to which the objects, technical solutions and advantages of the application are more clearly understood, with reference to the accompanying drawings and embodiments, to this Shen
It please be further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and do not have to
In restriction the application.
On the contrary, the application covers any substitution done in the spirit and scope of the application being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the application, below to the thin of the application
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The application can also be understood completely in description.
As depicted in figs. 1 and 2, Fig. 1 is HFC access net typical structure schematic diagram.Fig. 2 is the data communication system knot of HFC
Structure schematic diagram.Wherein, CMTS (small C Cable Modem Terminal System) is Cable Modem (cable modem)
Ending system, using 10base-T, the interfaces such as 100BASE-T are connected by crossover HUB with external device, pass through router
It is connect with Internet, or can directly be linked to local server.Cable modem (Cable Modem) is HFC number
According to an important component in communication system, it can make people obtain the access speed for being higher than phone Modem hundred times.CM
(Cable Modem) is ustomer premises access equipment, is placed in the family of user, the computer phase by 10base-T interface, with user
Connection.
After adding cable modem (Cable Modem) in cable television (CATV) network, so that it may realize view
Signal access other than frequency business, can not only provide high-speed data service, moreover it is possible to supporting telephone business.For cable modulatedemodulate
The requirement for adjusting device (Cable Modem) is can not only to realize transmitted in both directions, while being also required to expand transmission capacity.
As shown in figure 3, a kind of trouble shooting processing method of cable TV two-way network provided in an embodiment of the present invention, packet
Include following steps:
S100, the threshold range that standard low-and high-frequency level difference is stored in advance；Wherein, the threshold range in the step S100
For (0,20).
S200, the route distribution web frame figure that building are stored in advance.
S300, the positive level that receives for obtaining CM cable modem are A；And acquisition CM cable modem is anti-
It is B to launching electrical level.
S400, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output is compared by low-and high-frequency level difference
It holds level and (positive level H+ inverse injection level L)-CM cable modem end level and (receives level A+ launching electrical level
B), low-and high-frequency level difference (X-Y) value is obtained.
Wherein, the step S400 is specifically included:
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D:
The sum of total losses comprising branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal,
Reversed uplink cable waste is Y；And it is A, CM cable modem that setting CM cable modem forward direction, which receives level,
Reversed launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ is reversed
Injection level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-
Y) value.
Whether the low-and high-frequency level difference (X-Y) that S500, judgement are calculated is in pre-set standard low-and high-frequency level difference
Threshold range in；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data is true
Determine failure joint location.
Wherein, the step S500 further include:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit occur
Or weak breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted to occur
Short-circuit or weak short circuit phenomenon reminds and checks whether joint shell aoxidizes, whether cable outer layer twine aoxidizes and whether check cable
Aging.
Wherein, the step S500 further include:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in cable modem to building；
For low-and high-frequency level difference (X-Y) value not in the threshold range in pre-set standard low-and high-frequency level difference
Cable modem prompts only to check the connector and circuit pack that it is exclusively enjoyed.
Specifically, the reversed debugging of cable TV two-way network uses " 0dB " gain principles, that is to say, that from Lou Fangzhi
CMTS (Cable Modem Terminal System) reverse port is " 0dB " gain, by taking the existing Network status in certain somewhere as an example,
For reach " 0dB " gain requirement, it is specified that building put output end inject reverse signal level be 16dBmv (in view of for low-frequency range,
This is set as L), in fact, over the past two years, it is many afterwards using C-CMTS (industry is known as small C Cable Modem Terminal System)
Building, which is put, to be cancelled, but it is still 16dBmv that output port injection reverse signal level is put in former building.
Cable modem (Cable Modem, CM) is that offer is double on hybrid fiber/coaxial (HFC) network
The ustomer premises access equipment transmitted to IP data.For guarantee CM (cable modem) receive effective downlink level (such as so-and-so
Regional cable broadband downlink frequency point is placed on the high band near 650MHZ), positive output level is put in the wired building in certain somewhere
The level of high frequency 650MHZ, it is desirable that be 37dBmv (in view of for high band, being set as H herein).
Abbreviation " putting in building " in the embodiment of the present invention refers to building amplifier (amplifier in Fig. 1), full name building radio frequency
Signal amplifier is also extension amplifier, and English is apartment amplifier or Lineextending amplifier,
It is the afterbody amplifier of camera cable transmission, it is followed by passive distribution network, that is, home-use branch's distribution
The amplifier or line of device or household are put.It is output high level to drive passive net that it, which is acted on, allows users to obtain foot
Enough signal levels
Assuming that the fixed attenuation summation that delivery outlet is put in the building CM (cable modem) Duan Zhi of certain user terminal is that D (includes
The sum of the total losses of branch distributor and fixed attenuation in link), the building CM (cable modem) Duan Zhi of user terminal
The positive downlink cable loss for putting delivery outlet is X, and reversed uplink cable waste is Y, and CM (cable modem) is positive to be received
Level is A, and the reversed launching electrical level of CM (cable modem) is B, then releases following two formula.
X=H-D-A----- (1) formula.
Y=B-D-L----- (2) formula.
That is (1) formula are as follows: put the positive downlink cable loss X of delivery outlet in the building CM (cable modem) Duan Zhi of user terminal
The fixed attenuation summation D- cable modem forward direction that delivery outlet is put in=forward direction the building level H- cable modem Duan Zhi connects
Receive level A.
That is (2) formula are as follows: put the reversed uplink cable waste Y of delivery outlet in the building CM (cable modem) Duan Zhi of user terminal
The fixed attenuation summation D- that delivery outlet is put in the reversed building launching electrical level B- cable modem Duan Zhi of=cable modem is anti-
To injection level L.
Wherein, (1)-(2) formula obtains: X-Y=(H+L)-(A+B) --- -- (3) formula (note: fixed attenuation D without).
" low-and high-frequency level difference Comparison Method " is derived by CMTS-CM technology, it may be assumed that is set in the two-way distribution network of cable television
Count it is relatively reasonable under the premise of, as long as guarantee active equipment debugging carried out standardization, summarize are as follows: (1) low-and high-frequency level difference
(X-Y)=afterbody active equipment output end level and (positive level H+ inverse injection level L)-CM (cable modem
Device) hold level and (receiving level A+ launching electrical level B).
It is that high frequency line loss lowers frequency line loss in view of (X-Y), so X-Y > 0.
Set user terminal the building CM (cable modem) Duan Zhi put delivery outlet cable total length as Z (rice), though
So flat laminated cable used in many distribution net designs is different from drop cable model, is convenience of calculation, the present invention is to be lost most
Big drop cable be unit of account (actually flat laminated cable account for total length Z amount it is less and loss also accounting it is small).
By taking the wired current drop cable F6 type in certain somewhere as an example, pad value is at low frequency point 50MHZ
0.047dB/ meters, it is 0.1705dB/ meters at high frequency points 640MHZ, can obtains:
X=0.1705Z Y=0.047Z---- (4) formula.
If after fixed attenuation D value is setting constant, the specified reversed transmitting electricity of corresponding CM (cable modem)
Flat B can be obtained by (1) (2) (4) formula:
X-Y=0.1705 × (B-D-L) ÷ 0.047- (B-D-L) ----(5) formula.
Z=(B-D-L) ÷ 0.047---- (6) formula.
A=H-D-0.1705 × (B-D-L) ÷ 0.047---- (7) formula.
According to above-mentioned (5) (6) (7) formula, H=37, L=16 are substituted into, according to CM (cable modem) launching electrical level B
Rated range in (30dBmv-55dBmv) corresponding different fixed attenuation D be worth relevant data (as shown in Figure 4).Knot
The rated range (- 10dBmv-15dBmv) that CM receives level A is closed, show that dash area is only reasonable section up to standard.
Fig. 4 is reasonable low-and high-frequency level difference (X-Y) value and CM (cable modem) level relationship table structure figure.
Therefore: in the embodiment of the present invention under the premise of the two-way distribution network design of cable television is relatively reasonable, only
Guarantee that building puts debugging and carried out standardization (to put debugging standard in the wired building in such as Guangdong: putting positive output level high frequency in building
The level demand of 650MHZ is 37dBmv, and it is 16dBmv that output end, which injects reverse signal level), with the wired existing distribution net in Guangdong
, it is concluded that the normal range (NR) of " low-and high-frequency level difference X-Y " value for debugging standard: X-Y=(0,18.4], (in actual operation,
Can be set to (0,20]) ----(8) formula.
Analyze in the embodiment of the present invention from low-and high-frequency level difference X-Y value: 1, as X-Y < 0, low cut value is excessive, explanation
There is open circuit or weak breaking phenomena (be mainly reflected in joint inner core too short or oxidation) in connector (or link)；2, work as X-Y > 18.4
When, high frequency attenuation value is excessive, illustrates that short circuit occurs in connector (or link) or weak short circuit phenomenon (is mainly reflected in joint shell oxygen
Change, the oxidation of cable outer layer twine and cable aging etc.).
Below by way of concrete application embodiment, the invention will be described in further detail:
The instance analysis for carrying out active O&M using " low-and high-frequency level difference Comparison Method " mode is as follows:
Two ladder way CM (cable modem) situations that certain wired building of certain somewhere is put down are set, according to " CMTS is transported
Battalion monitoring Integrated Network Management System " can export each optical node (small C) subordinate distribution net institute with CM forward direction reception level (A
Value) and reversed launching electrical level (B value), " X-Y value " can be calculated by (3) formula (53- (A+B)=X-Y) and (identify ash in following table
Color bottom point is the user CM for having network failure)
| Affiliated address | CM receives level | CM launching electrical level | X-Y value |
| The rooms 105 of the garden Fang Ya 12 | 7.7 | 43.9 | 1.4 |
| The rooms 208 of the garden Fang Ya 12 | 8 | 48.3 | -3.3 |
| The rooms 302 of the garden Fang Ya 12 | 11.1 | 43.9 | -2 |
| The rooms 401 of the garden Fang Ya 12 | 6.3 | 49 | -2.3 |
| The rooms 408 of the garden Fang Ya 12 | 4.4 | 46 | 2.6 |
| The rooms 501 of the garden Fang Ya 12 | 8.9 | 47 | -2.9 |
| The rooms 602 of the garden Fang Ya 12 | 10.8 | 44.9 | -2.7 |
| The rooms 702 of the garden Fang Ya 12 | 4.6 | 38.5 | 9.9 |
| The rooms 705 of the garden Fang Ya 12 | 11.1 | 43.9 | -2 |
| The rooms 708 of the garden Fang Ya 12 | 9.1 | 54 | -10.1 |
| The rooms 908 of the garden Fang Ya 12 | 6 | 52.5 | -5.5 |
The CM tables of data as derived from the CMTS operation monitoring Integrated Network Management System that Fig. 5 is the embodiment of the present invention.Network operation
Personnel de-assign web frame (or recalling related distribution net drawing in advance) by having visited, for the normal CM of (X-Y) value, until
Building is put passed through connector and cable and be can determine that as normal (following Fig. 6 identifies 2772 lines of blue portion), in this way, for
(X-Y) the abnormal CM of value, as long as checking connector and circuit pack (following Fig. 6 mark RED sector, Fig. 6 that it is exclusively enjoyed
It is that distribution net figure is put in certain building).
Distribution net a fairly large number of for CM, usually simply because a public connectors failure and influence (X-Y) of multiple CM
There is exception in value, and the low-and high-frequency level difference Comparison Method of maintenance personnel through the embodiment of the present invention carries out simply analyzing and determining energy
Fault point comparatively fast is found, to greatly save the O&M time.
In order to sufficiently verify " the low-and high-frequency level difference Comparison Method " of the embodiment of the present invention, nearly 5000 family CM (cable has been carried out
Modem) sampling practice, all CM for not meeting " X-Y=(0,18.4] " range, investigating it, there are joint faults
Or cable fault, and the overwhelming majority is happened in user's internal home network, meanwhile, this mode is conducive to quickly search altogether really
Use joint fault.The wired quantity that there is " harmful connector " in net CM in so-and-so Experimental Area, which is checked out, by the method is up to 3
It ten thousand, accounts for the 8% of net CM user, this kind of user is not only to cause the main cause of backward channel noise, even more potential high-risk stream
Appraxia family.
The present invention uses " low-and high-frequency level difference Comparison Method ", it may be assumed that relatively reasonable in the two-way distribution network design of cable television
Under the premise of, as long as guaranteeing that standardization has been carried out in active equipment debugging, obtain: (1) low-and high-frequency level difference (X-Y)=afterbody
Active equipment output end level and (the positive level H+ inverse injection level L) end-CM level and (reception level A+ launching electrical level
B)；(2) normal range (NR) of low-and high-frequency level difference are as follows: X-Y=(0,18.4].
1, with effect: the O&M portion in the embodiment of the present invention inside the TV network of certain experiment test section is written
It is used as monitoring project in " CMTS operation monitoring Integrated Network Management System ", and detects that somewhere is wired not to be reached in net CM in the presence of " x-y "
About 30,000 family of scalar, accounting 8%.And 3 demonstration quarters of experiment test section are all made of with " the low-and high-frequency electricity of the embodiment of the present invention
The mode of adjustment Comparison Method " installs nearly 3600 gateways, and high bandwidth is experienced, and complaint of the user to network speed can be effectively reduced
Amount, improves the satisfaction of user.
The embodiment of the present invention through the embodiment of the present invention " low-and high-frequency level difference Comparison Method, can promote each network channel
Total quality, realize the whole network channel " matter " leap.
As shown in Fig. 2, the trouble shooting processing method based on above-mentioned cable TV two-way network, the present invention correspondingly provide
A kind of trouble shooting processing system of cable TV two-way network, the trouble shooting processing system of the cable TV two-way network
System can be server etc. and calculate equipment.The trouble shooting processing system of the cable TV two-way network includes processor 10, deposits
Reservoir 20 and display screen 30, processor 10 are connect by communication bus 50 with memory 20, and the display screen 30 is total by communication
Line 50 is connect with processor 10.Fig. 7 illustrates only the members of the trouble shooting processing system of cable TV two-way network, but
Be it should be understood that, it is not required that implement all components shown, the implementation that can be substituted is more or less component.
The memory 20 can be the trouble shooting processing system of the cable TV two-way network in some embodiments
The internal storage unit of system, for example, cable TV two-way network trouble shooting processing system memory.The memory 20 exists
It is also possible to the external storage of the trouble shooting processing system server of the cable TV two-way network in other embodiments
The plug-in type USB flash disk being equipped in equipment, such as the server, intelligent memory card (Smart Media Card, SMC), safe number
Word (Secure Digital, SD) card, flash card (Flash Card) etc..Further, the memory 20 can also be wrapped both
The internal storage unit for including the server also includes External memory equipment.The memory 20 described has for storing to be installed on
The application software and Various types of data, such as the program code of installation of trouble shooting processing system etc. of line TV bilateral network.Institute
Stating memory 20 can be also used for temporarily storing the data that has exported or will export.In one embodiment, memory
The trouble shooting processing method program 40 of cable TV two-way network, the failure inspection of the cable TV two-way network are stored on 20
Looking into processing method program 40 can be performed by processor 10, to realize the trouble shooting of cable TV two-way network in the application
Processing method.And alignment processing result is shown by display screen 30.
In one embodiment, when processor 10 executes in the memory 20 at the trouble shooting of cable TV two-way network
It is performed the steps of when managing method program 40
S1, the threshold range that standard low-and high-frequency level difference is stored in advance；
S2, the route distribution web frame figure that building are stored in advance；
S3, the positive level that receives for obtaining CM cable modem are A；And acquisition CM cable modem is reversed
Launching electrical level is B；
S4, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output end is compared by low-and high-frequency level difference
Level and (positive level H+ inverse injection level L)-CM cable modem end level and (reception level A+ launching electrical level
B), low-and high-frequency level difference (X-Y) value is obtained；
Whether the low-and high-frequency level difference (X-Y) that S5, judgement are calculated is in pre-set standard low-and high-frequency level difference
In threshold range；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data determines
Failure joint location.
Wherein, it is also realized when the processor executes the trouble shooting processing routine of the cable TV two-way network as follows
Step:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit occur
Or weak breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted to occur
Short-circuit or weak short circuit phenomenon reminds and checks whether joint shell aoxidizes, whether cable outer layer twine aoxidizes and whether check cable
Aging.
Wherein, it is also realized when the processor executes the trouble shooting processing routine of the cable TV two-way network as follows
Step:
Threshold range in the step S1 is (0,20)；
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D:
The sum of total losses comprising branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal,
Reversed uplink cable waste is Y；And it is A, CM cable modem that setting CM cable modem forward direction, which receives level,
Reversed launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ is reversed
Injection level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-
Y) value.
Wherein, it is also realized when the processor executes the trouble shooting processing routine of the cable TV two-way network as follows
Step:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in cable modem to building；
For low-and high-frequency level difference (X-Y) value not in the threshold range in pre-set standard low-and high-frequency level difference
Cable modem prompts only to check the connector and circuit pack that it is exclusively enjoyed, as detailed above.
Based on the above embodiment, the present invention also provides a kind of storage mediums, wherein the storage medium is stored with computer and refers to
It enables, when the computer instruction is performed, realizes the trouble shooting processing side of described in any item cable TV two-way networks
Method, as detailed above.
In conclusion a kind of trouble shooting processing method of cable TV two-way network provided by the invention, system and deposit
Storage media can quick and precisely search the connector that goes wrong by low-and high-frequency level difference Comparison Method, reach quick Network Search connector
The purpose of failure and cable fault, accelerates maintenance efficiency, quickly searches failure for a line maintenance personnel and provides convenience, and saves
Manpower and material resources, reduce maintenance cost.
A kind of trouble shooting processing method of cable TV two-way network disclosed herein, system and storage medium can
Energy bring beneficial effect includes but is not limited to: said effect.It should be noted that different embodiments are issuable beneficial to effect
Fruit is different, in different embodiments, it is possible to create beneficial effect can be the combinations of any of the above one or more, can also
Be other it is any can obtainable beneficial effect.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within mind and principle.
Claims (10)
1. a kind of trouble shooting processing method of cable TV two-way network characterized by comprising
S1, the threshold range that standard low-and high-frequency level difference is stored in advance；
S2, the route distribution web frame figure that building are stored in advance；
S3, the positive level that receives for obtaining CM cable modem are A；And it obtains CM cable modem and reversely emits
Level is B；
S4, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level is compared by low-and high-frequency level difference
(positive level H+ inverse injection level L)-CM cable modem end level and (receiving level A+ launching electrical level B), obtain
Low-and high-frequency level difference (X-Y) value out；
S5, the low-and high-frequency level difference (X-Y) that is calculated of judgement whether pre-set standard low-and high-frequency level difference threshold value
In range；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data determines failure
Joint location.
2. the trouble shooting processing method of cable TV two-way network as described in claim 1, which is characterized in that the step
S5 further include:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit or weak occur
Breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted short circuit occur
Or weak short circuit phenomenon, remind check joint shell whether aoxidize, cable outer layer twine whether aoxidize and check cable whether aging.
3. the trouble shooting processing method of cable TV two-way network as described in claim 1, which is characterized in that the step
Threshold range in S1 is (0,20).
4. the trouble shooting processing method of cable TV two-way network as described in claim 1, which is characterized in that the step
S4 is specifically included:
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D: including
The sum of the total losses of branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal, reversely
Uplink cable waste is Y；And it is A that setting CM cable modem forward direction, which receives level, CM cable modem is reversed
Launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ inverse injection
Level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-Y) value.
5. the trouble shooting processing method of cable TV two-way network as described in claim 1, which is characterized in that the step
S5 further include:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM cable
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in modem to building；
For low-and high-frequency level difference (X-Y) value not cable in the threshold range in pre-set standard low-and high-frequency level difference
Modem prompts only to check the connector and circuit pack that it is exclusively enjoyed.
6. a kind of trouble shooting processing system of cable TV two-way network characterized by comprising processor, memory and
Communication bus；
The trouble shooting processing routine for the cable TV two-way network that can be executed by the processor is stored on the memory；
The communication bus realizes the connection communication between processor and memory；
The processor realizes following steps when executing the trouble shooting processing routine of the cable TV two-way network:
S1, the threshold range that standard low-and high-frequency level difference is stored in advance；
S2, the route distribution web frame figure that building are stored in advance；
S3, the positive level that receives for obtaining CM cable modem are A；And it obtains CM cable modem and reversely emits
Level is B；
S4, formula: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level is compared by low-and high-frequency level difference
(positive level H+ inverse injection level L)-CM cable modem end level and (receiving level A+ launching electrical level B), obtain
Low-and high-frequency level difference (X-Y) value out；
S5, the low-and high-frequency level difference (X-Y) that is calculated of judgement whether pre-set standard low-and high-frequency level difference threshold value
In range；If not existing, connector failure herein is prompted, route distribution network configuration figure according to the pre-stored data determines failure
Joint location.
7. the trouble shooting processing system of cable TV two-way network according to claim 6, which is characterized in that the place
Reason device also realizes following steps when executing the trouble shooting processing routine of the cable TV two-way network:
As low-and high-frequency level difference (X-Y) < 0, it is determined as that low cut value is excessive, then connector or link is prompted open circuit or weak occur
Breaking phenomena；It reminds and checks whether joint inner core is too short or aoxidizes；
As low-and high-frequency level difference (X-Y) > 18.4, it is determined as that high frequency attenuation value is excessive, then connector or link is prompted short circuit occur
Or weak short circuit phenomenon, remind check joint shell whether aoxidize, cable outer layer twine whether aoxidize and check cable whether aging.
8. the trouble shooting processing system of cable TV two-way network according to claim 6, which is characterized in that the place
Reason device also realizes following steps when executing the trouble shooting processing routine of the cable TV two-way network:
Threshold range in the step S1 is (0,20)；
S41, preset: the fixed attenuation summation that delivery outlet is put in the building CM cable modem Duan Zhi of user terminal is D: including
The sum of the total losses of branch distributor and fixed attenuation in link；
And it is X that the positive downlink cable loss of delivery outlet is put in the building CM cable modem Duan Zhi of setting user terminal, reversely
Uplink cable waste is Y；And it is A that setting CM cable modem forward direction, which receives level, CM cable modem is reversed
Launching electrical level is B；
It obtains: X=H-D-A----- (1) formula
Y=B-D-L----- (2) formula；
S42, (1)-(2) formula show that low-and high-frequency level difference compares formula:
X-Y=(H+L)-(A+B) --- -- (3) formula；
It obtains: low-and high-frequency level difference (X-Y)=afterbody active equipment output end level and (positive level H+ inverse injection
Level L)-CM cable modem end level and (receive level A+ launching electrical level B), obtain low-and high-frequency level difference (X-Y) value.
9. the trouble shooting processing system of cable TV two-way network according to claim 6, which is characterized in that the place
Reason device also realizes following steps when executing the trouble shooting processing routine of the cable TV two-way network:
For low-and high-frequency level difference (X-Y) value in the threshold range of pre-set standard low-and high-frequency level difference, CM cable
It puts passed through connector and cable and can determine that be normal, progress fault-free prompt in modem to building；
For low-and high-frequency level difference (X-Y) value not cable in the threshold range in pre-set standard low-and high-frequency level difference
Modem prompts only to check the connector and circuit pack that it is exclusively enjoyed.
10. a kind of storage medium, which is characterized in that the storage medium is stored with computer instruction, when the computer instruction
It is performed, realizes the trouble shooting processing method of cable TV two-way network as described in any one in claim 1-5.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116389800A (en) * | 2023-03-07 | 2023-07-04 | 广东有线广播电视网络有限公司 | Control method and control system for live broadcast signal picture layer alarm linkage treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735218A (en) * | 2004-08-11 | 2006-02-15 | 深圳市劲成宽频技术有限公司 | Signal test analysis system for CATV optical fibre coaxial cable mixing network |
| JP2013131981A (en) * | 2011-12-22 | 2013-07-04 | Technology Networks Inc | Cable television network monitoring system, cable television network monitoring method and program |
| CN107852343A (en) * | 2015-11-06 | 2018-03-27 | 华为技术有限公司 | A kind of method and device, the system of hfc plant fault location |
-
2019
- 2019-04-02 CN CN201910263183.9A patent/CN110311728B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735218A (en) * | 2004-08-11 | 2006-02-15 | 深圳市劲成宽频技术有限公司 | Signal test analysis system for CATV optical fibre coaxial cable mixing network |
| JP2013131981A (en) * | 2011-12-22 | 2013-07-04 | Technology Networks Inc | Cable television network monitoring system, cable television network monitoring method and program |
| CN107852343A (en) * | 2015-11-06 | 2018-03-27 | 华为技术有限公司 | A kind of method and device, the system of hfc plant fault location |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116389800A (en) * | 2023-03-07 | 2023-07-04 | 广东有线广播电视网络有限公司 | Control method and control system for live broadcast signal picture layer alarm linkage treatment |
| CN116389800B (en) * | 2023-03-07 | 2024-01-26 | 广东有线广播电视网络有限公司 | Control method and control system for live broadcast signal picture layer alarm linkage treatment |
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