CN104901721B - A kind of cat vehicle for testing CMTS - Google Patents
A kind of cat vehicle for testing CMTS Download PDFInfo
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- CN104901721B CN104901721B CN201510288251.9A CN201510288251A CN104901721B CN 104901721 B CN104901721 B CN 104901721B CN 201510288251 A CN201510288251 A CN 201510288251A CN 104901721 B CN104901721 B CN 104901721B
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- shelf
- cable modem
- cat vehicle
- shelving unit
- cmts
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Abstract
The present invention provides a kind of cat vehicle for testing CMTS, is related to a kind of communication technique field.The invention includes cat vehicle main body, cable modem, Switching Power Supply, interchanger, cat vehicle main body includes the first shelving unit and the second shelving unit, first shelving unit and the second shelving unit are longitudinal spliced integral, the reticulated structure of first shelving unit and the second shelving unit is convenient for the installation of cabling and various accessories, cable modem and Switching Power Supply are mounted in the cat vehicle main body, interchanger is mounted on the outside of cat vehicle main body, cable modem is correspondingly connected with Switching Power Supply, and cable modem is connect with interchanger.The present invention has the characteristics that powerful, autgmentability is strong, compatibility is extensive, assembling is simple, conveniently moving.
Description
Technical field
The present invention relates to a kind of communication technique field, more particularly to a kind of cat vehicle for testing CMTS.
Background technology
Cable Modem translate into cable modem, are commonly called as " cat " or " broadband cat "." cat vehicle " is that laboratory is normal
The fixation " cat frame " seen is changed to mobile invention.CMTS is the abbreviation of Cable Modem Termination System, is to have
Most important equipment in line television broadband network.It is surfed the Internet with domestic most domestic consumers by the telephone wire of unicom or telecommunications
It is different, in most families of the country such as America and Europe surfed the Internet by the circuit of cable television.Due to former 1.0 and 2.0
Epoch, research and development and manufacture are mainly rested in a few large manufacturer's hands in the U.S. such as Cisco, Motorola, ARRIS, and with large-scale CMTS
Based on (referred to as big C), individual equipment supports 1000-64000 user to surf the Internet simultaneously, and price remains high always.During into 3.0
Generation, other than large-scale CMTS continues to be developed, Botong of chip maker (Broadband) company research and development of famous American
Go out the master chip of a support Small-sized C MTS, and core component introduces modular mentality of designing, support 128,256,512 or
1024 users, not only significantly reduce manufacture cost, also reduce the access threshold of CMTS research and development.It supports original
DOCSIS and eurodocsis standard, while support the C-DOCSIS standards newly formulated of China, thus enter " big C " and
The epoch of " small C " joint development.The country has had more than ten companies to put into the research and development of small C at present, as Huawei, number regard
Major companies such as (ancient cooking vessel point video signals) are interrogated by stronger research and development and economic strength, significantly maintains the leading position and has started at present
Realize commercial, in addition also Hangzhou indigo plant connection, Beijing University of Post ＆ Telecommunication Guoan, Shen Zhendong are ground, Future broadband etc. has also released model machine or volume production, foreign countries
Manufacturer has also set foot in small C fields as Cisco, Thomson, Caesar group etc..It is but still lack of standardization in the testing field of CMTS at present
With perfect, ununified standard or method, also without effective test system and equipment.
Invention content
Shortcoming present in regarding to the issue above, the present invention provide a kind of cat vehicle for testing CMTS, make it have work(
Can be powerful, autgmentability is strong, compatible extensive, assembling is simple, conveniently moving the features such as.
To solve the above-mentioned problems, the present invention provides a kind of cat vehicle for testing CMTS, wherein, including cat vehicle main body, cable
Modem, Switching Power Supply, interchanger, the cat vehicle main body include the first shelving unit and the second shelving unit, and described the
One shelving unit and second shelving unit are longitudinal spliced integral, first shelving unit and second shelving unit
Reticulated structure convenient for the installation of cabling and various accessories, the cable modem and the Switching Power Supply are mounted on described
In cat vehicle main body, the interchanger is mounted on the outside of the cat vehicle main body, the cable modem and the Switching Power Supply
It is correspondingly connected with, the cable modem is connect with the interchanger.
Preferably, first shelving unit and second shelving unit are mounted on four layers of shelf, are put including first
Plate, the second shelf, third shelf, the 4th shelf, the 5th shelf, the 6th shelf, the 7th shelf, the 8th shelf, the cable tune
Modulator-demodulator is mounted on the shelf, and the Switching Power Supply is mounted on the bottom of the shelf, the cable modem
The quantity being mounted on every layer of shelf with the Switching Power Supply is eight.
Preferably, be provided with eight distributors on the shelf, eight distributor be mounted on the shelf centre and
It is connect with the cable modem, the right and left of eight distributor is separately installed with four cable modems
Device and four Switching Power Supplies, the cable modem and the Switching Power Supply correspond installation.
Preferably, eight distributor is connect with eight splitters, when multiple cat vehicle main bodies work at the same time, by described
Eight splitters are connected.
Preferably, the first interchanger on the outside of second shelf is installed, the second friendship is installed on the outside of the 4th shelf
It changes planes, 3rd switch, first interchanger, the second switch and the third is installed on the outside of the 6th shelf
Interchanger is connect with the cable modem, and first interchanger, the second switch and the third exchange
Machine mutually cascades.
Preferably, cooling system is further included, the cooling system includes eight quiet fans, second shelf and described
Four quiet fans are respectively arranged on 6th shelf, the cooling system blows cold air upwards, makes full use of air
Principle of dynamics makes hot-air accelerate to flow upwards, to reach best result of ventilating heat dissipation.
Preferably, the quiet fan is separately mounted between two cable modems.
Preferably, the cat vehicle main body bottom is provided with the mute universal wheel of lock brake, first shelving unit
Bottom is equipped with the adjustable plastics leg of height, and the mute universal wheel is fixedly connected with the plastics leg.
Preferably, the shelf is netted, interts installation convenient for data line, cable, power cord and band is tied up, described to put
Netted baffle plate is also equipped on plate.
Preferably, quadrangle is provided with protruding portion at the top of the cat vehicle main body, the protruding portion can hooking miscellaneous equipment or
It is fixedly connected during multiple cat vehicle main body cascades.
Compared with prior art, the present invention has the following advantages：
The present invention is to build a multifunctional testing that can be moved easily using cable modem by high-volume to set
It is standby to imitate true user's scene, for the overall plan of laboratory test CMTS properties, there is powerful, autgmentability
By force, the features such as compatible extensive, assembling is simple, conveniently moving.
Description of the drawings
Fig. 1 is the embodiment of the present invention structure diagram.
Main element symbol description：
1- cat vehicle main body 2- the second shelving unit the first shelving units of 3-
Eight distributors of 4- cable modem 5- Switching Power Supplies 6-
7- the first interchanger 8- second switch 9- 3rd switch
The 6th shelves of the 4th shelf 12- of 10- the second shelf 11-
The mute universal wheel 14- quiet fans of 13-
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings with example to this
Invention is described in further detail, but example is not as a limitation of the invention.
As shown in Figure 1, the embodiment of the present invention includes cat vehicle main body 1, cable modem 4, Switching Power Supply 5, exchanges
Machine 7, cat vehicle main body 1 include the first shelving unit 3 and the second shelving unit 2, and the first shelving unit 3 and the second shelving unit 2 are
Four layers of shelf are installed, including the first shelf, the second shelf 10, third shelf, the 4th shelf 11, the 5th shelf, the 6th shelf
12nd, the 7th shelf, the 8th shelf, the first shelving unit 3 and the second shelving unit 2 are longitudinal spliced integral, the first shelving unit 3
It is convenient for the installation of cabling and various accessories with the reticulated structure of the second shelving unit 2；Cable modem 4 is mounted on shelf
On, Switching Power Supply 5 is mounted on the bottom of shelf, and cable modem 4 and Switching Power Supply 5 connect one to one installation, cable
The quantity that modem 4 and Switching Power Supply 5 are mounted on every layer of shelf is eight；Eight distributors are provided on every layer of shelf
6, eight distributors 6 are mounted on shelf centre and are connect with cable modem 4, the right and left difference of eight distributors 6
There are four installations cable modem 4 and four Switching Power Supplies 5, eight distributors 6 to be connect with eight splitters, multiple cat vehicle main bodies
1 when working at the same time, and passes through eight splitters and connects；Interchanger is mounted on the outside of cat vehicle main body, and the outside of the second shelf 10 is equipped with the
One interchanger 7,11 outside of the 4th shelf are equipped with second switch 8, and 12 outside of the 6th shelf is equipped with 3rd switch 9, the
One interchanger 7, second switch 8 and 3rd switch 9 are connect with cable modem 4, and the first interchanger 7, second is handed over
Change planes 8 and 3rd switch 9 mutually cascade.
Cooling system is further included in cat vehicle main body 1, cooling system includes eight quiet fans 14, the second shelf 10 and the 6th
Four quiet fans 14 are respectively arranged on shelf 12, quiet fan 14 is separately mounted between two cable modems 4,
Cooling system blows cold air upwards, makes full use of aerodynamic principle, and hot-air is made to accelerate to flow upwards, to reach best
Result of ventilating heat dissipation.
1 bottom of cat vehicle main body is provided with the mute universal wheel 13 of lock brake, and 3 bottom of the first shelving unit is equipped with height
Low adjustable plastics leg, mute universal wheel 13 are fixedly connected with plastics leg.
Netted baffle plate is also equipped on shelf.
1 top quadrangle of cat vehicle main body is provided with protruding portion, and protruding portion being capable of 1 grade of hooking miscellaneous equipment or multiple cat vehicle main bodies
It is fixedly connected during connection.
In the present embodiment, the cat vehicle for testing CMTS can be with testing large CMTS, medium-sized CMTS, Small-sized C MTS, CCMTS, D-
CMTS, MINI-CMTS, M-CMTS, outdoor type CMTS and small C of other producers etc., according to different configurations, comply fully with C-
DOCSIS, DOCSIS or eurodocsis standard support currently used 2.0 version and 3.0 versions and the DOCSIS in future
3.1 and DOCSIS, 4.0 standards.
Test the cat vehicle design mount scheme of CMTS：
1st, main body frame designs：
Using IKEA OMAR shelving units, shelving unit why is selected rather than steel that legacy network devices use
Or iron rack, it is because of itself light, more than 10 kilograms of single weight, more than 20 kilograms of total weight after assembly, assembling is quick and easy,
It can be longitudinal spliced, extending transversely；And 65 kilograms of steel shelf individual layer maximum capacity, reticulated structure are convenient for cabling and various accessories
Binding, suitable for scale of mass production, convenient repeatedly buying.
Cat vehicle main body 1 is longitudinal spliced by two shelving units and installs mute universal wheel 13 and forms, each shelving unit peace
4 layers of shelf are filled, totally 8 layers.The entirety long a height of 92x36x178cm of x wide x, shelf interval about the 22cm (overwhelming majority of cat vehicle main body 1
20cm is highly below during 4 vertical display of cable modem, 4 height of cable modem of indivedual internal batteries is
26cm can be placed on top layer's shelf, not by height limitation in compatibility test scheme).Every layer of shelf places 8 cable modulation
Demodulator 4, each two cable modem 4 centre distance about 11cm, convenient for heat dissipation.
4 mute universal wheels 13 are installed in the bottom of cat vehicle main body 1, convenient to be moved on a large scale in laboratory, are also convenient for simultaneously
Small range is moved when later stage replaces cable modem 4 and maintenance.In the present embodiment, the brake of diameter 50mm belt lock catchs is selected
The mute universal wheel 13 of stainless steel is connected by the screw hole of 3 bottom height adjustable plastic leg of itself 8mm screw and the first shelving unit
It connects.
2nd, the selection of cable modem 4：
The difference of test content, the cable modem 4 for arranging in pairs or groups different, the model for selecting good compatibility, stability strong,
And each testing requirement provides at least two different models, and the quantity in single cat vehicle main body 1 is 64, can be according to demand
Be multiplied test CMTS cat vehicle quantity, the cat vehicle of small-sized test CMTS usually supports 128,256,512 or 1024 use
Family, the cat vehicle that identical 2,4,8 or 16 test CMTS can be built according to different demands are used in series.
A, test American Standard DOCSIS 2.0, selects Motorola SB5100i or SB5101 or SB5101N or SB5101U；
B, test Europe superscript EuroDOCSIS 2.0, selects Motorola SB5101E or SB5101NE or Thomson TCM420
Or Cisco DPQ2160；
C, test American Standard DOCSIS 3.0, selects Motorola SB6120 or Comtrend CM-6300n or netware
CG3000D；
D, test Europe superscript EuroDOCSIS 3.0, selects motor sieve SB6141E or Thomson TCM471P or EPC3008；
E, IPV6 is tested, selects Thomson TCM471P or netware CG3100D-2 or Comtrend CM-6300n；
F, EMTA and VOIP is tested, selects accton SMC8414-2P-SIP (American Standard 2.0) or Thomson TWG870 (Europe superscripts
Or Motorola SBV6120E (Europe superscript 3.0) (remarks 3.0)：This model supports PacketCable 1.5 and 2.0) simultaneously；
G, radio function is tested, selects Motorola SBG6580Comtrend CM-6300n or netware CG3100；
(note：Above-mentioned Cable Modem are all using 12V Switching Power Supplies)
H, test CMTS compatibility chooses several test from more than 100 kind models of different vendor, each at least 2
Platform, concrete model is referring to table one.
3rd, Switching Power Supply 5 (transformer) is selected：
Since the cable modem 4 in current more than 90% whole world is all powered using 12V power supplys, so test CMTS
Cat vehicle power supply select the 12V Switching Power Supplies 5 of Motorola SB5101E institutes standard configuration, the bottom of every layer of shelf is fixed on by band
Portion.Power interface internal diameter is 2.5mm band clamps, while is compatible with the interface of 2.1mm internal diameters.The Switching Power Supply 5 is safe and stable, work(
Rate is big, and outside connects 220V AC powers using 8 word power cords, and the cable of built-in power can be directly connected to by pulling out 8 word power cords
Modem 4.
In addition it can increase a set of 110V electric power systems.Due to part built-in power type cable modem 4 usually only
It supports 110V voltages, does not support 220V, to avoid burning apparatus, prevent fire, increased according to usage quantity small-sized or large-scale
220V turns 110V transformers.
4th, the cat vehicle wiring of test CMTS：
Coaxial cable selects four shielding lines, it is ensured that the stabilization of signal installs made in Great Britain eight point on every layer of shelf respectively
Orchestration 6 (the present embodiment selects the 8FP-12 distributors of Gehua Cable's customization, decays to 12db), each eight distributor 6 reconnects
On to eight splitters (the present embodiment selects the XFZ-814 splitters of Gehua Cable's customization, decays to 14db).It is multiple when having
When the cat vehicle of test CMTS works at the same time, it can be connected by eight splitters.In addition it can increase in main cables as needed and decline
Subtract stick or adjustable attenuator.All eight distributors, 6 and eight splitters all using extrusion head made in Great Britain or are cold-pressed head, and its other end
The part of cable modem 4 is connect for convenience of dismantling, all with metric system connector or large size F heads, can directly be plugged, it is not necessary to be twisted
Tightly, signal strength is unaffected.The cable selection preferable CAT5E UTP cable of quality between cable modem 4 and interchanger.
Power cord, data line and cable are fixed in key position with band, both ends paster number, it is ensured that cabling is safe and clean and tidy.
5th, interchanger is selected：
24 mouth switchs are installed respectively on the second shelf 10, the 4th shelf 11 and the 6th shelf 12, pass through cable
All cable modems 4 are connected respectively, the first interchanger 7, second switch 8 and 3rd switch 9 mutually cascade,
More WAN mouthfuls of routers or computer can be used to be directly connected to cable modem 4.
6th, cooling system：
Using eight 8cm quiet fans 14, the bottom of the second shelf 10 and the 6th shelf 11 is separately mounted to, by cold air
It blows upwards, makes full use of aerodynamic principle, hot-air is made to accelerate to flow upwards, to reach best result of ventilating heat dissipation,
Fan need to install catch net additional, prevent finger from scratching.
7th, give out a contract for a project instrument (apolegamy)
Instrument of giving out a contract for a project is selected according to testing requirement, the computer for simulating in varying numbers carries out data transmission.
8th, jamming equipment (apolegamy)
Ever-present TV, set-top box, active signal amplifier etc. may be in cable TV network in simulation reality
The various equipment of noise are generated in circuit.Each equipment at least selects two pieces, wherein an installation high-pass filter, another just
Often access.
Partly shielding effect line can also be overlapped or short circuit, for simulating in adverse circumstances line fault to whole network
The interference of formation.
9th, other details：
Distinguish adhesive label paper, and according to from left to right, principle from the bottom up carries out in the front and back position of every layer of shelf
Number, layering facilitate position to choose and connect up mounting arrangements.
Individual shape is special, is not suitable for the cable modem 4 uprightly placed, can be hung down by increasing netted baffle plate
Directly put.
There are the protruding portions of 3cm for 1 top quadrangle of cat vehicle main body, facilitate the cat vehicle of hooking miscellaneous equipment or multiple test CMTS
Banding fixed during cascade.
Test：
In actual test work, according to experiment parameter or demand, by the way that the different of CMTS are configured and are ordered, cooperation is other
Equipment completes various tests.
Table one：The alternative cable modem model of CMTS compatibility tests, it is proposed that select according to demand therein several
Kind, each at least 2：
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (7)
1. a kind of cat vehicle for testing CMTS, which is characterized in that including cat vehicle main body, cable modem, Switching Power Supply, exchange
Machine, the cat vehicle main body include the first shelving unit and the second shelving unit, first shelving unit and second shelf
Unit is longitudinal spliced integral, and the reticulated structure of first shelving unit and second shelving unit is convenient for cabling and various
The installation of accessory, the cable modem and the Switching Power Supply are mounted in the cat vehicle main body, the interchanger peace
On the outside of the cat vehicle main body, the cable modem is correspondingly connected with the Switching Power Supply, the cable modulatedemodulate
Device is adjusted to be connect with the interchanger；
Wherein, first shelving unit and second shelving unit are mounted on four layers of shelf, including the first shelf, second
Shelf, third shelf, the 4th shelf, the 5th shelf, the 6th shelf, the 7th shelf, the 8th shelf are provided with eight distribution on shelf
Device, eight distributor are mounted on the shelf centre and are connect with the cable modem, eight distributor
The right and left be respectively mounted there are four the cable modem and four Switching Power Supplies, the cable modem
It corresponds and installs with the Switching Power Supply.
2. the cat vehicle of test CMTS as described in claim 1, which is characterized in that the cable modem is mounted on described
On shelf, the Switching Power Supply is mounted on the bottom of the shelf, the cable modem and Switching Power Supply installation
Quantity on every layer of shelf is eight；Eight distributor is connect with eight splitters, and multiple cat vehicle main bodies are same
When working, pass through eight splitter and connect；The shelf to be netted, convenient for data line, cable, power cord intert installation and
Band is tied up, and netted baffle plate is also equipped on the shelf.
3. the cat vehicle of test CMTS as described in claim 1, which is characterized in that be equipped with the first friendship on the outside of second shelf
It changes planes, second switch is installed on the outside of the 4th shelf, 3rd switch is installed on the outside of the 6th shelf, described the
One interchanger, the second switch and the 3rd switch are connect with the cable modem, and described first hands over
It changes planes, the second switch and the 3rd switch mutually cascade.
4. the cat vehicle of test CMTS as claimed in claim 3, which is characterized in that further include cooling system, the cooling system
Including eight quiet fans, four quiet fans are respectively arranged on second shelf and the 6th shelf, it is described
Cooling system blows cold air upwards, makes full use of aerodynamic principle, and hot-air is made to accelerate to flow upwards, to reach best
Result of ventilating heat dissipation.
5. the cat vehicle of test CMTS as claimed in claim 4, which is characterized in that the quiet fan is separately mounted to two institutes
It states between cable modem.
6. the cat vehicle of test CMTS as described in claim 1, which is characterized in that the cat vehicle main body bottom is provided with latching
The mute universal wheel of brake, the first shelving unit bottom are equipped with the adjustable plastics leg of height, the mute universal wheel with
The plastics leg is fixedly connected.
7. the cat vehicle of test CMTS as described in claim 1, which is characterized in that quadrangle is provided with prominent at the top of the cat vehicle main body
Go out portion, the protruding portion can be fixedly connected hooking miscellaneous equipment or whens multiple cat vehicle main body cascades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288251.9A CN104901721B (en) | 2015-05-29 | 2015-05-29 | A kind of cat vehicle for testing CMTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288251.9A CN104901721B (en) | 2015-05-29 | 2015-05-29 | A kind of cat vehicle for testing CMTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104901721A CN104901721A (en) | 2015-09-09 |
| CN104901721B true CN104901721B (en) | 2018-07-10 |
Family
ID=54034137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510288251.9A Expired - Fee Related CN104901721B (en) | 2015-05-29 | 2015-05-29 | A kind of cat vehicle for testing CMTS |
Country Status (1)
| Country | Link |
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| CN (1) | CN104901721B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204229A (en) * | 1997-05-28 | 1999-01-06 | 夏普公司 | Thin type cable modem and stand for mounting the same |
| CN1296350A (en) * | 2000-12-22 | 2001-05-23 | 卢玉涛 | Wide band connection by combination of HFC and local network |
| CN203522957U (en) * | 2013-09-23 | 2014-04-02 | 深圳键桥通讯技术股份有限公司 | Mini cable modem terminal system (Mini CMTS) device |
| CN204967813U (en) * | 2015-05-29 | 2016-01-13 | 北京人师北清科技发展有限公司 | Test CMTS's cat car |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030099100A1 (en) * | 2001-11-26 | 2003-05-29 | Baker John W. | Adaptive module for housings |
| US7894349B2 (en) * | 2007-03-14 | 2011-02-22 | Arris Group, Inc. | Method and system for testing customer premise equipment devices |
| US9237084B2 (en) * | 2012-11-09 | 2016-01-12 | Cisco Technology, Inc. | Apparatus, system, and method for providing energy management, profiles, and message blocks in a cable service environment |
-
2015
- 2015-05-29 CN CN201510288251.9A patent/CN104901721B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204229A (en) * | 1997-05-28 | 1999-01-06 | 夏普公司 | Thin type cable modem and stand for mounting the same |
| CN1296350A (en) * | 2000-12-22 | 2001-05-23 | 卢玉涛 | Wide band connection by combination of HFC and local network |
| CN203522957U (en) * | 2013-09-23 | 2014-04-02 | 深圳键桥通讯技术股份有限公司 | Mini cable modem terminal system (Mini CMTS) device |
| CN204967813U (en) * | 2015-05-29 | 2016-01-13 | 北京人师北清科技发展有限公司 | Test CMTS's cat car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104901721A (en) | 2015-09-09 |
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