CN104238678B - ATCA cabinet wind speed test methods and system based on 3.0 standards of PICMG - Google Patents
ATCA cabinet wind speed test methods and system based on 3.0 standards of PICMG Download PDFInfo
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- CN104238678B CN104238678B CN201310228631.4A CN201310228631A CN104238678B CN 104238678 B CN104238678 B CN 104238678B CN 201310228631 A CN201310228631 A CN 201310228631A CN 104238678 B CN104238678 B CN 104238678B
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Abstract
The present invention, which provides a kind of ATCA cabinet wind speed test methods and system, this method based on 3.0 standards of PICMG, to be included：By the first groove position of standard foreboard test board and standard tail board test board insertion ATCA cabinets and fixation；Air velocity transducer is equipped with standard foreboard test board and tailgate test board；Standard foreboard baffle and standard tailgate baffle are inserted into the remaining groove position of ATCA cabinets；The airflow velocity data collected using data switching exchane collection air velocity transducer；Airflow velocity data are analyzed and processed using central monitoring server centered, the first the distinguished and admirable of groove position in ATCA cabinets is obtained and passes through situation；By the second groove position of standard foreboard test board and standard tail board test board insertion ATCA cabinets and fixation measuring；And so on, until having surveyed whole groove positions in ATCA cabinets.The present invention can measure the wind flow of each groove position and the relation of casing structure in ATCA cabinets, so as to improve ATCA casing structures according to the wind flow measured.
Description
Technical field
The invention belongs to technical field of measurement and test, is related to a kind of cabinet wind speed test method, is based on more particularly to one kind
The ATCA cabinet wind speed test methods and system of 3.0 standards of PICMG.
Background technology
ATCA (Advanced Telecom Computing Architecture, advanced communication computer framework) is
The telecommunications industry standard of a kind of Full-open, interoperable, can meet the various application demands of data processing server.ATCA systems
System is made of ATCA cabinets and ATCA boards.The effect of ATCA cabinets is to provide heat dissipation for ATCA boards, and the big advantage of one exists
In its superior heat radiation performance.ATCA cabinets ensure that the space of bigger, while provide redundant fan design, with enhancing heat dissipation system
The function of system.Because the fan and power supply of ATCA boards are provided by ATCA cabinets, the blade server production of ATCA technologies
The power consumption of product only has the 10% of ordinary blade server, this meaning for especially ultra-large data center of data center
It is huge, can be that its powerup issue the most urgent is alleviated in data center.
Good case radiation function enables the densification of ATCA cabinets to concentrate board, between board and board mutually
It is close to, this is at the same time also supplied to ATCA cabinets the heat dissipation of ATCA boards to propose test, therefore the present invention is to ATCA standards
The heat dispersal situations of cabinet propose a kind of test method.
The global organization that communications platform trade union (CP-TA) is made of communications platform and component vendor, it is intended to
Accelerate to dispose communications platform by SIG management, based on open specification by interoperability certification.In CP-TA Thermal tests
In standard, specified in more detail has been made to the wind speed and temperature test of ATCA cabinets.This causes the test equipment of standardization, test
Flow and test result balancing method are possibly realized.The present invention integrates file using the CP-TA Thermal tests of standard, to ATCA cabinets
Wind speed proposes a kind of test method, to improve ATCA cabinet physical arrangements.
The content of the invention
In view of the foregoing deficiencies of prior art, it is an object of the invention to provide one kind to be based on 3.0 standards of PICMG
ATCA cabinet wind speed test methods and system, for solving accurately grasp ATCA cabinets in the prior art for different close
Degree concentrates the heat dispersal situations of board.
In order to achieve the above objects and other related objects, the present invention provides a kind of ATCA machines based on 3.0 standards of PICMG
Case wind speed test method and system.
A kind of ATCA cabinet wind speed test methods based on 3.0 standards of PICMG, it is described based on 3.0 standards of PICMG
ATCA cabinet wind speed test methods include：By the of standard foreboard test board and standard tail board test board insertion ATCA cabinets
One groove position and fixation；Air velocity transducer is equipped with standard foreboard test board and standard tail the board test board；In ATCA
Standard foreboard baffle and standard tailgate baffle are inserted into the remaining groove position of cabinet；The wind speed is collected using data switching exchane to pass
The airflow velocity data that sensor collects；The airflow velocity data are analyzed and processed using central monitoring server centered, are obtained
The first the distinguished and admirable of groove position passes through situation in the ATCA cabinets；Standard foreboard test board and standard tail board test board are inserted into
Second groove position of ATCA cabinets and fixation, and the former standard foreboard baffle being inserted into the second groove position and standard tailgate baffle are shifted
It is inserted into the first groove position, repeats the second the distinguished and admirable of groove position in above-mentioned testing procedure acquisition ATCA cabinets and pass through situation；Class successively
Push away, until having surveyed whole groove positions in ATCA cabinets.
Preferably, the wind speed test method further includes：Whether located using central monitoring server test air velocity transducer
In working status, then by the standard foreboard test board and standard tail board test belonging in running order air velocity transducer
Board is inserted into the first groove position of ATCA cabinets.
Preferably, the wind speed test method further includes：The central monitoring server centered analyzing and processing is described distinguished and admirable
After speed data, by the ATCA cabinets of acquisition each groove position it is distinguished and admirable by situation in the form of graphical form output wind speed
Test report.
Preferably, before the air velocity transducer gathers airflow velocity data, first ATCA cabinet apoplexy is set to be fanned out to wind
The size of amount.
Preferably, the central monitoring server is communicated by USB data line with data switching exchane, and data switching exchane passes through
USB trunk cable lines communicate with air velocity transducer.
A kind of ATCA cabinets wind speed test system based on 3.0 standards of PICMG, the ATCA cabinets wind speed test system
Including：Standard foreboard test board, is inserted in the ATCA cabinets in the foreboard slot of experimental tank position to be measured, gathers ATCA cabinets
In airflow velocity data；Standard tail board test board, is inserted in the ATCA cabinets in the tailgate slot of experimental tank position to be measured,
Gather the airflow velocity data in ATCA cabinets；At least one standard foreboard baffle, is inserted in the ATCA cabinets and removes groove to be measured
In foreboard slot outside position, preferable test environment is simulated；At least one standard tailgate baffle, is inserted in the ATCA cabinets
In tailgate slot in addition to groove position to be measured, preferable test environment is simulated；Data switching exchane, with the standard foreboard test board
It is respectively connected with standard tail board test board, collects the airflow velocity data；Central monitoring server, with the data exchange
Machine is connected, and concentrates and analyzes and processes the airflow velocity data, obtains each the distinguished and admirable of groove position in the ATCA cabinets and pass through situation.
Preferably, the ATCA cabinets based on 3.0 standards of PICMG include front region and tailgate region, the foreboard
It is plugged in respectively with tailgate within the corresponding slot in switching backplane both sides, foreboard includes switching board and Node Board；Tailgate with
The supporting connection of foreboard, is the Interface Expanding of foreboard.
Preferably, the standard foreboard test board includes at least one air velocity transducer；The standard tail board test board
Including at least one air velocity transducer；The standard foreboard test board and the external structure phase of the foreboard in the ATCA cabinets
Together, the standard tail board test board is identical with the external structure of the tailgate in the ATCA cabinets.
Preferably, the standard foreboard baffle is identical with the external structure of the foreboard in the ATCA cabinets, the standard
Tailgate baffle is identical with the external structure of the tailgate in the ATCA cabinets.
Preferably, the data switching exchane is equipped with USB interface, and data switching exchane is supervised by USB data line and the center
Server is surveyed to be connected；The data switching exchane is connected by USB trunk cable lines with the air velocity transducer.
As described above, ATCA cabinet wind speed test methods and system of the present invention based on 3.0 standards of PICMG, tool
There is following beneficial effect：
The present invention is by the way that the standard foreboard test board and standard tail board test board that are furnished with air velocity transducer are inserted into
ATCA cabinets, to capture the wind flow of the different wind speed for the groove position for flowing through ATCA cabinets, can accurately grasp ATCA cabinets for
Different densities concentrate the heat dispersal situations of board, and analyze the pass of the wind flow with ATCA cabinet physical Designs that flow through ATCA grooves position
System, casing structure is improved according to the wind flow measured, so as to achieve the purpose that to be adapted to the heat dissipation that different densities are concentrated with board.
Brief description of the drawings
Fig. 1 is the structure diagram of existing 14 groove position ATCA cabinets of standard.
Fig. 2 is the overlooking the structure diagram of existing 14 groove position ATCA cabinets of standard.
Fig. 3 is the side structure schematic view of existing 14 groove position ATCA cabinets of standard.
Fig. 4 is the structure diagram that the ATCA cabinets wind speed of the present invention based on 3.0 standards of PICMG tests system.
Fig. 5 is the flow diagram of the ATCA cabinet wind speed test methods of the present invention based on 3.0 standards of PICMG.
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
Refer to attached drawing.It should be noted that only explanation is of the invention in a schematic way for the diagram provided in the present embodiment
Basic conception, only the display component related with the present invention rather than component count, shape during according to actual implementation in schema then
Shape and size are drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its component cloth
Office's kenel may also be increasingly complex.
The ATCA cabinets based on 3.0 standards of PICMG include foreboard and tailgate, and the foreboard and tailgate are plugged in respectively
Within the corresponding slot in switching backplane both sides, foreboard is divided into switching board (HUB BOARD) and Node Board (NODE BOARD),
Tailgate is matched with foreboard, is the Interface Expanding of foreboard.It is power unit below the groove position of Node Board, there is heat dissipation work(
The fan group and controller of energy.Standard ATCA cabinets include the types such as 2 groove positions, 5 groove positions, 14 groove positions and 16 groove positions, and Fig. 1 is extremely
Fig. 3 is that the structure of standard ATCA cabinets is shown by taking 14 groove positions as an example.
With reference to embodiment and attached drawing, the present invention is described in detail.
Embodiment
The present embodiment provides a kind of ATCA cabinets wind speed based on 3.0 standards of PICMG to test system, as shown in figure 4, should
Wind speed test system includes：Standard foreboard test board, standard tail board test board, at least one standard foreboard baffle, at least 1
A standard tailgate baffle, data switching exchane, central monitoring server.
The standard foreboard test board is inserted in the ATCA cabinets in the foreboard slot of experimental tank position to be measured, collection
Airflow velocity data in ATCA cabinets.
The standard tail board test board is inserted in the ATCA cabinets in the tailgate slot of experimental tank position to be measured, collection
Airflow velocity data in ATCA cabinets.In test, the standard tail board test board and the standard foreboard test board
It must be inserted in respectively in the tailgate slot and foreboard slot of same groove position.
The standard foreboard baffle is inserted in the foreboard slot in the ATCA cabinets in addition to groove position to be measured, and simulation is preferable
Test environment.Standard foreboard baffle is the block structure plate identical with the structure of foreboard, does not have the function of foreboard,
It acts on the ventilation situation all same for mainly making remaining groove position in ATCA cabinets in test, from the internal structure shadow of foreboard
Ring, so as to build a preferable test environment.Specifically, the standard foreboard test board and the section in the ATCA cabinets
The external structure of point veneer is identical.
The standard tailgate baffle is inserted in the tailgate slot in the ATCA cabinets in addition to groove position to be measured, and simulation is preferable
Test environment.Standard tailgate baffle is also the block structure plate identical with the structure of tailgate, does not have the work(of tailgate
Can, it is acted on as standard foreboard baffle, mainly makes the ventilation situation of remaining groove position in ATCA cabinets homogeneous in test
Together, influenced from the internal structure of tailgate, so as to build a preferable test environment.Specifically, the tailgate test board
It is identical with the external structure of the rear plug in veneer in the ATCA cabinets.
The standard foreboard test board includes at least one air velocity transducer；The standard tail board test board also includes
At least one air velocity transducer；The air velocity transducer is used to capture the different wind flows for flowing through each groove position of ATCA cabinets, and with wind
Speed definition flows through the wind flow of each groove position, and such as 100% air quantity is set, that is, gathers airflow velocity data (the i.e. wind in ATCA cabinets
Resistance).
The data switching exchane is respectively connected with the standard foreboard test board and standard tail board test board, collects institute
State airflow velocity data.The data switching exchane is equipped with USB interface, and data switching exchane passes through USB trunk cable lines and the wind
Fast sensor is connected, and data switching exchane is connected by USB data line with the central monitoring server.
The central monitoring server is connected with the data switching exchane, concentrates and analyzes and processes the airflow velocity data,
Obtain each the distinguished and admirable of groove position in the ATCA cabinets and pass through situation.Wind flow i.e. measured by central monitoring server analysis with
The correlation that ATCA boards design in ATCA cabinets, is drawn each characteristic quantity in relation to influencing wind flow, is shown with patterned way
The change of each characteristic quantity, and then know that each the distinguished and admirable of groove position passes through situation in the ATCA cabinets.
Further, the central monitoring server can divide region to the groove position in ATCA cabinets, by preceding plug in veneer institute
Region be known as front region, the region where rear plug in veneer is known as tailgate region, can also be further by front region
Or tailgate region division is several sub-regions, then provides front region and tailgate area in units of front region and tailgate region
Domain it is distinguished and admirable by situation, or provide foreboard subregion in units of subregion or/and the distinguished and admirable of tailgate subregion passes through feelings
Condition.
ATCA cabinets wind speed test system of the present invention based on 3.0 standards of PICMG passes through in ATCA to be monitored
Cabinet is inserted into foreboard test board and tailgate test board, can measure the wind flow situation behind each groove position of cabinet, and divide
Analysis obtains patterned analysis result.
The present embodiment also provides a kind of ATCA cabinet wind speed test methods based on 3.0 standards of PICMG, as shown in figure 5,
The ATCA cabinet wind speed test methods based on 3.0 standards of PICMG include：
Before the air velocity transducer gathers airflow velocity data, first ATCA cabinet apoplexy is set to be fanned out to the big of air quantity
It is small；
By the first groove position of standard foreboard test board and tailgate test board insertion ATCA cabinets and fixation；The standard
Air velocity transducer is equipped with foreboard test board and tailgate test board；Further, central monitoring server test wind is utilized
Whether fast sensor is in running order, then by the standard foreboard test board belonging in running order air velocity transducer
With the first groove position of tailgate test board insertion ATCA cabinets so that standard foreboard test board and tailgate test board can profits
The wind flow of the first groove position is measured with air velocity transducer；
Standard foreboard baffle and standard tailgate baffle are inserted into the remaining groove position of ATCA cabinets；
The airflow velocity data collected using the data switching exchane collection air velocity transducer；
The airflow velocity data are analyzed and processed using central monitoring server centered, are obtained first in the ATCA cabinets
The distinguished and admirable of groove position passes through situation；
By the second groove position of standard foreboard test board and tailgate test board insertion ATCA cabinets and fixation, and original is inserted
Enter the standard foreboard baffle in the second groove position and the transfer of standard tailgate baffle is inserted into the first groove position, repeat above-mentioned testing procedure
Obtain the second the distinguished and admirable of groove position in ATCA cabinets and pass through situation；
And so on, until having surveyed whole groove positions in ATCA cabinets；
After central monitoring server centered analyzes and processes the airflow velocity data, by each groove in the ATCA cabinets of acquisition
Position it is distinguished and admirable by situation in the form of graphical form output wind speed test report.
Further, the central monitoring server controls data switching exchane and air velocity transducer to work by USB data line.
The central monitoring server is preferably PC machine.
The present invention flows through ATCA cabinets by the way that foreboard test board and tailgate test board are inserted into ATCA cabinets to capture
Groove position wind flow, and analyze flow through the wind flow of ATCA grooves position and the relation of ATCA cabinet physical Designs, then by with institute
Each characteristic quantity related with groove position that air velocity transducer described in stating the central monitoring server statistics of air velocity transducer connection measures
(such as airflow velocity), then show in a manner of patterned the change of each characteristic quantity, and then know each in the ATCA cabinets
Groove position it is distinguished and admirable by situation, so as to improve ATCA casing structures according to the wind flow measured.
In conclusion the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of ATCA cabinet wind speed test methods based on 3.0 standards of PICMG, it is characterised in that described to be based on PICMG
The ATCA cabinet wind speed test methods of 3.0 standards include：
By the first groove position of standard foreboard test board and standard tail board test board insertion ATCA cabinets and fixation；The standard
Air velocity transducer is equipped with foreboard test board and standard tail board test board；The standard foreboard test board with it is described
The external structure of foreboard in ATCA cabinets is identical, and the standard tail board test board is outer with the tailgate in the ATCA cabinets
Portion's structure is identical；
Standard foreboard baffle and standard tailgate baffle are inserted into the remaining groove position of ATCA cabinets；The standard foreboard baffle with
The external structure of foreboard in the ATCA cabinets is identical, and the standard tailgate baffle is outer with the tailgate in the ATCA cabinets
Portion's structure is identical；
The airflow velocity data collected using the data switching exchane collection air velocity transducer；
The airflow velocity data are analyzed and processed using central monitoring server centered, obtain the first groove position in the ATCA cabinets
Distinguished and admirable pass through situation；
By the second groove position of standard foreboard test board and standard tail board test board insertion ATCA cabinets and fixation, and original is inserted
Enter the standard foreboard baffle in the second groove position and the transfer of standard tailgate baffle is inserted into the first groove position, repeat above-mentioned testing procedure
Obtain the second the distinguished and admirable of groove position in ATCA cabinets and pass through situation；
And so on, until having surveyed whole groove positions in ATCA cabinets；
The air velocity transducer defines the wind flow for flowing through each groove position with wind speed；Measured by the central monitoring server analysis
The correlation that wind flow is designed with ATCA boards in ATCA cabinets, draws each characteristic quantity in relation to influencing wind flow, so that according to
The wind flow measured improves ATCA casing structures.
2. the ATCA cabinet wind speed test methods according to claim 1 based on 3.0 standards of PICMG, it is characterised in that
The wind speed test method further includes：It is whether in running order using central monitoring server test air velocity transducer, then
By the standard foreboard test board belonging in running order air velocity transducer and standard tail board test board insertion ATCA machines
First groove position of case.
3. the ATCA cabinet wind speed test methods according to claim 1 based on 3.0 standards of PICMG, it is characterised in that
The wind speed test method further includes：After the central monitoring server centered analyzes and processes the airflow velocity data, it will obtain
The distinguished and admirable of each groove position is exported by situation with the wind speed test report of graphical form in the ATCA cabinets obtained.
4. the ATCA cabinet wind speed test methods according to claim 1 based on 3.0 standards of PICMG, it is characterised in that：
Before the air velocity transducer gathers airflow velocity data, first ATCA cabinet apoplexy is set to be fanned out to air volume.
5. the ATCA cabinet wind speed test methods according to claim 1 based on 3.0 standards of PICMG, it is characterised in that：
The central monitoring server is communicated by USB data line with data switching exchane, and data switching exchane passes through USB junction cables
Line communicates with air velocity transducer.
A kind of 6. ATCA cabinets wind speed test system based on 3.0 standards of PICMG, it is characterised in that the ATCA cabinets wind speed
Test system includes：
Standard foreboard test board, is inserted in the ATCA cabinets in the foreboard slot of experimental tank position to be measured, gathers ATCA cabinets
In airflow velocity data；
Standard tail board test board, is inserted in the ATCA cabinets in the tailgate slot of experimental tank position to be measured, gathers ATCA cabinets
In airflow velocity data；The standard foreboard test board is identical with the external structure of the foreboard in the ATCA cabinets, institute
It is identical with the external structure of the tailgate in the ATCA cabinets to state standard tail board test board；The standard foreboard test board and
Air velocity transducer is equipped with standard tail board test board；
At least one standard foreboard baffle, is inserted in the foreboard slot in the ATCA cabinets in addition to groove position to be measured, and simulation is preferable
Test environment；
At least one standard tailgate baffle, is inserted in the tailgate slot in the ATCA cabinets in addition to groove position to be measured, and simulation is preferable
Test environment；The standard foreboard baffle is identical with the external structure of the foreboard in the ATCA cabinets, the standard tailgate
Baffle is identical with the external structure of the tailgate in the ATCA cabinets；
Data switching exchane, is respectively connected with the standard foreboard test board and standard tail board test board, collects described distinguished and admirable
Speed data；
Central monitoring server, is connected with the data switching exchane, concentrates and analyzes and processes the airflow velocity data, described in acquisition
Each the distinguished and admirable of groove position passes through situation in ATCA cabinets；The air velocity transducer defines the wind flow for flowing through each groove position with wind speed；
The correlation that wind flow measured by the central monitoring server analysis is designed with ATCA boards in ATCA cabinets, draws related
Each characteristic quantity of wind flow is influenced, so as to improve ATCA casing structures according to the wind flow measured.
7. the ATCA cabinets wind speed test system according to claim 6 based on 3.0 standards of PICMG, it is characterised in that：
The ATCA cabinets based on 3.0 standards of PICMG include foreboard and tailgate, and the foreboard and tailgate are plugged in the exchange back of the body respectively
Within the corresponding slot in plate both sides, foreboard includes switching board and Node Board；Tailgate and the supporting connection of foreboard, are connecing for foreboard
Mouth extension.
8. the ATCA cabinets wind speed test system according to claim 7 based on 3.0 standards of PICMG, it is characterised in that：
The standard foreboard test board includes at least one air velocity transducer；The standard tail board test board includes at least one wind speed
Sensor.
9. the ATCA cabinets wind speed test system according to claim 6 based on 3.0 standards of PICMG, it is characterised in that：
The data switching exchane is equipped with USB interface；Data switching exchane is connected by USB data line with the central monitoring server；Institute
Data switching exchane is stated by USB trunk cable lines with the air velocity transducer to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228631.4A CN104238678B (en) | 2013-06-08 | 2013-06-08 | ATCA cabinet wind speed test methods and system based on 3.0 standards of PICMG |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228631.4A CN104238678B (en) | 2013-06-08 | 2013-06-08 | ATCA cabinet wind speed test methods and system based on 3.0 standards of PICMG |
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| CN104238678B true CN104238678B (en) | 2018-04-17 |
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| DE202004002008U1 (en) * | 2004-02-11 | 2004-06-17 | Apra-Gerätebau Dipl.-Ing. (FH) Wolfgang Appenzeller und Wilfried Rademacher GmbH & Co KG | Housing or housing insert fitted with fans incorporating electric and/or electronic components on circuit boards, etc., e.g. for cooling advanced telecom computing architecture (ATCA), with cooling gas flow from inlet to outlet side |
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| CN101662922A (en) * | 2009-09-08 | 2010-03-03 | 华为技术有限公司 | Multiple-slot chassis and radiating method thereof |
| CN102346524A (en) * | 2010-08-04 | 2012-02-08 | 研祥智能科技股份有限公司 | Intelligent heat dissipation method for micro telecommunications computing architecture (MTCA) platform |
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|---|---|---|---|---|
| CN1470866A (en) * | 2002-07-23 | 2004-01-28 | 华为技术有限公司 | Heat measuring apparatus and method thereof |
| DE202004002008U1 (en) * | 2004-02-11 | 2004-06-17 | Apra-Gerätebau Dipl.-Ing. (FH) Wolfgang Appenzeller und Wilfried Rademacher GmbH & Co KG | Housing or housing insert fitted with fans incorporating electric and/or electronic components on circuit boards, etc., e.g. for cooling advanced telecom computing architecture (ATCA), with cooling gas flow from inlet to outlet side |
| CN101109982A (en) * | 2007-08-22 | 2008-01-23 | 中兴通讯股份有限公司 | Method for implementing variable air quantity zone control and system frame thereof |
| CN101662922A (en) * | 2009-09-08 | 2010-03-03 | 华为技术有限公司 | Multiple-slot chassis and radiating method thereof |
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| Publication number | Publication date |
|---|---|
| CN104238678A (en) | 2014-12-24 |
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