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SJ/T 11406-2009 English PDF (SJT11406-2009)

SJ/T 11406-2009 English PDF (SJT11406-2009)

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SJ/T 11406-2009: Specification of LED panels for stadium and gymnasium
This specification stipulates the definition, classification and grading, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage requirements of LED panels for stadium and gymnasium. This specification applies to the design, manufacturing, quality inspection, installation, acceptance of LED panels for stadium and gymnasium.
SJ/T 11406-2009
SJ
ELECTRONIC INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 31.120
L 63
Record No.:
Specification of LED panels for stadium and
gymnasium
ISSUED ON: NOVEMBER 17, 2009
IMPLEMENTED ON: JANUARY 01, 2010
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 7
4 Classification and grading ... 8
4.1 Classification ... 8
4.2 Characteristic grade ... 8
5 Requirements ... 8
5.1 Standard test conditions ... 8
5.2 Functional characteristics of panel ... 9
5.3 Optical performance ... 11
5.4 Electrical performance of panels ... 12
5.5 Structure, appearance, mechanical properties of panels ... 13
5.6 Hardware environment of panel ... 15
5.7 Software environment of panel ... 17
5.8 Safety requirements ... 17
5.9 Power supply ... 17
5.10 Environmental adaptability ... 18
5.11 Electromagnetic compatibility ... 18
5.12 Resistance to wind pressure ... 18
5.13 Anti-corrosion ... 18
5.14 Reliability requirements ... 19
6 Test method ... 19
6.1 Test instrument and software ... 19
6.2 Test method ... 19
7 Inspection rules ... 27
7.1 Inspection items ... 27
7.2 Identification ... 27
7.3 Quality consistency inspection ... 29
8 Markings, packaging, transportation, storage ... 31
8.1 Markings ... 32
8.2 Packaging ... 32
8.3 Transportation ... 33
8.4 Storage ... 33
References ... 34
Specification of LED panels for stadium and
gymnasium
1 Scope
This specification stipulates the definition, classification and grading, technical requirements, test methods, inspection rules, marking, packaging,
transportation, storage requirements of LED panels for stadium and gymnasium. This specification applies to the design, manufacturing, quality inspection, installation, acceptance of LED panels for stadium and gymnasium (hereinafter abbreviated panel).
This specification does not include panels for guiding directions OR the panels in the timing and scoring system, in the stadium and gymnasium.
2 Normative references
The provisions in following documents become the provisions of this Standard through reference in this Standard. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard; however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 191 Packaging - Pictorial marking for handling of goods
GB 2312 Code of Chinese graphic character set for information interchange - Primary set
GB/T 2423.17-1993 Basic environmental testing procedures for electric and electronic products Test Ka: Salt mist
GB/T 3453-1994 Basic mode control procedures for data communications
(ISO 1745:1975; 1177; 2111; 2628; 2629, NEQ)
GB 4208-1993 Degrees of protection provided by enclosure (IP code) (IEC 529:1989, EQV)
GB/T 6107-2000 Interface between data terminal equipment and data circuit terminating equipment employing serial binary data interchange (EIA/TIA- The ambient temperature is 15 °C ~ 35 °C; the relative humidity is 15%RH ~ 80%RH; the atmospheric pressure is 86 kPa ~ 106 kPa; the power supply
voltage is 220 x (1 ± 10%) V, 50 Hz ± 1 Hz. The testing of optical performance shall be able to carry out, in the normal direction of the panel, under the following illuminance: 10 x (1±10%) lx for indoor panels, 40 x (1±10%) lx for outdoor panels, at the absence of obvious colored light source.
5.2 Functional characteristics of panel
5.2.1 Graphic and text panels
It has the display function of letters, numbers, text, charts, graphics. Each primary color shall have a grayscale processing capability, which is greater than level 16 (color level equal to 4 bits). The animation display is consistent with the display of the corresponding area, on the main computer monitor.
5.2.2 Video panel
In addition to the functional characteristics of the graphic and text panel, each primary color shall have grayscale processing capabilities of level 256 (color scale equal to 8 bits). It has the animation display function and video signal playback function.
5.2.3 Display control
The panel shall be able to display the rolling timing, backward timing, pause timing of the game, in a real time manner; perform rolling display and page turning to display the running results of the game; automatically and manually switch the displayed text content; make the characters flash one by one, clear screen (black screen). The letters, digital, text display is stable, clear; it has no crosstalk, glare, sawtooth; the display color is uniform.
For the panel with graphic and text display function and video display function, it shall be able to adjust the panel's brightness, color, contrast, grayscale, horizontal and vertical position of the image, working method, text, chart and graph, animation; the live broadcast images shall be able to switch between each other automatically or manually.
5.2.4 Characters displayed on the flat panel
For the flat panels of swimming venues used for international competitions, they must meet the requirements of the competition rules of the International Swimming Federation.
For the flat panels, which are used in other stadiums and gymnasiums, AND the panels of other installation structures, the display content, display column requirements of GB/T 6107-2000 and GB/T 3453-1994.
5.6.3 Communication between the data conversion part and the host
computer
For the panel, which uses the host computer, it shall use a physical transmission medium, that meets its functional requirements and communication protocol requirements, to transmit the 256-level above grayscale video signal to the unit plate of the panel, for display.
For the panel, which uses an embedded processor, its serial binary data communication shall meet the requirements of GB/T 6107-2000 or RS-485
interface standard.
5.6.4 Requirements for structural installation
The panel body shall use a supporting structure, that guarantees its structural strength, balance, stability, resistance to earthquake. Behind the panel, there shall be enough space, to facilitate the heat dissipation, installation, use, maintenance of the panel.
The stadium panel shall be placed in a direct lightning protection zone (LPZ OB), which is protected by an external lightning protection system. The grounding device of lightning protection system shall be reliably grounded. For stadium panels, which are used in areas prone to thunderstorms, it shall take measures, to prevent nearby lightning discharges from causing lightning induction (electrostatic induction and electromagnetic induction) on the panel. It shall be designed and installed according to the requirements of GB/T 19271.1-2003. For the comprehensive gymnasiums, natatoriums, diving halls, other individual sports gymnasiums with independent architectural structures, sports center in gym-style buildings, the panels shall be placed in the first shielded protection zone (LPZ1), in the stadium and the sports center, where it is not susceptible to direct lightning strikes. They are connected to the common grounding system of the gymnasium and the sports center, through the equipotential bonding conductor (or connecting strip). They shall be designed and installed in accordance with the requirements of GB 50343-2004 and GB 50169-1992.
Except for special circumstances, the panel shall be installed on the recording table, the playing field, the team seat, or the location where everyone involved in the game can see clearly, according to the actual conditions of the stadium, the type, structure, performance, maximum viewing distance, character height, viewing angle of the stadium.
system. The load on the three phases must be evenly distributed. The power load shall conform to the first-class load criteria of GB 50055-1993.
For the maximum power consumption per display area of the panel OR the total power consumption of the panel, it shall be agreed upon by the supplier and the buyer, in accordance with the contract, based on the technical specifications and requirements of the panel type, function, structure size, pixels used. 5.10 Environmental adaptability
The environmental adaptability of the panels for stadium and gymnasium shall meet the requirements of 5.9 in SJ/T 11141-2003.
5.11 Electromagnetic compatibility
When the stadium and gymnasium have a variety of electronic equipment, the supplier and the buyer can agree on the electromagnetic compatibility of the panel, according to the contract. The electromagnetic emission of the panel shall meet the requirements of GB/T 19954.1-2005; the immunity shall meet the requirements of GB/T 19954.2-2005.
5.12 Resistance to wind pressure
The panel for stadium shall have a certain resistance to wind pressure. It shall meet the design requirements of GB 50009-2001. After being subjected to the wind pressure, which is generated by the wind speed of 40 m/s, it does not affect the use performance of the panel; the permanent geometric deformation of the panel, which is caused by wind pressure, is not more than 3 mm.
5.13 Anti-corrosion
Anti-corrosion measures shall be taken for panels, which are used in swimming pools and diving halls. For the panel for stadium and gymnasium, in the hot and humid climate area, where there is severe heat, salt fog and mold growth, AND in the environment where the environmental parameters of atmospheric active substances seriously exceed the standard, the supplier and the buyer may agree upon the type of protection, anti-corrosion requirements and measures, inspection criteria, test methods, according to GB/T 19607-2004 and the actual situation.
inspection of all functions of the graphics and text panel, it is necessary to display computer animation, to compare and check the animation function; meanwhile use the video source to check the function of the video signal, which shall meet the requirements of 5.2.2.
6.2.1.3 Display control
Operate the computer to run the panel, to visually check the scrolling timing or backward timing, pause timing, which are generated by the computer simulation, scrolling display and page turning display text, flashing characters, automatic or manual switching of the displayed text content, clear screen (black screen), which shall meet the requirements of 5.2.3.
Operate the computer to run the panel, which has the graphic and text and video display function; adjust the brightness, color, contrast, grayscale, horizontal and vertical position of the image, working method of the panel, to visually check text, charts and graphics, animation, mutual automatic and manual switching between live broadcast images, which shall meet the requirements in 5.2 3. 6.2.1.4 Characters displayed on flat panel
Operate the computer to run the panel, to make the whole screen of the graphic and text area display the characters, meanwhile make each character flashes one by one; make the whole screen displays Chinese characters; make the first column displays characters, whilst all the other columns display Chinese characters; display the display column for individual sports game. Use the visual inspection method; the results shall meet the corresponding
requirements in 5.2.4.
6.2.1.5 Maximum viewing distance and character height
Calculate the character height, according to the pixel center distance of the tested panel for stadium and gymnasium. Calculate the maximum viewing
distance approximately, according to formula (1), which shall meet the
requirements of 5.2.5.
According to the competition rules of the International Swimming Federation, for the panels which are used for swimming halls, diving halls or swimming diving halls, used in the competition, the character height shall be converted from the pixel center distance, which shall meet the requirements of the competition rules.
In accordance with the competition rules and sports industry standards, the height and width of the panel's characters, which are agreed by the contract, shall be tested and accepted according to the contract.
Note: θt is related to the structure of the panel, pixel density, optical and electrical 6.2.4.3.2 Degree of protection of shell
Visually inspect the waterproof sealing layer of the stadium panel, which shall meet the requirements of 5.5.3.2. When testing according to the method
specified in GB 4208-1993, the panel is fixed according to the working position. When carrying out the spray test of the surface of IPX3 and IPX4 panels, the tester shall hold the hand-held sprinkler, to spray water on the screen surface, within ± 60° of the central axis, at a distance of 300 mm ~ 500 mm from the panel surface. Adjust the water pressure's range (50 kPa ~ 150 kPa), so that the total water flow rate reaches 7 L/min. When carrying out the spray test on the IPX5 and IPX6 stadium panels, the tester shall use a hose nozzle, to perpendicularly spray water on the screen surface, at a distance of 2.5 m ~ 3 m from the panel surface. For the IPX5 panel, use a nozzle, which has a diameter of 6.3 mm, to make the total water flow rate reach (12.5 ± 0.625) L/min. For the IPX6 panel, use a nozzle, which has a diameter of 12.5 mm, to make the total water flow rate reach (100 ± 5) L/min. The duration of each test is calculated, according to the effective display area of the panel, 1 min per square meter, at least 3 min spray. After the test, visually inspect the inside of the panel, which shall meet the requirements of 5.5.3.2.
For stadium panels that require F ≥ IP 54, the dustproof and waterproof closed- unit box of the display module group is used as the second type of type, to carry out the dustproof test and waterproof test, according to Article 12 and Article 13 of GB 4208-1993. After the test, visually inspect the inside of the closed-unit box, wherein the amount of talc powder deposition and water accumulation shall meet the requirements of 5.5.3.2.
6.2.5 Hardware environment of panels
Check the host computer of control part of the panel, the communication interface, the support structure of the panel body, the lightning protection measures and installation, the installation position of the panel, item by item, according to the functional requirements, which shall meet the requirements of 5.6.
6.2.6 Software environment of panels
According to the functional requirements, check the basic operating system software and its platform functions as running referee operating system software, LED multimedia editing studio software, which shall meet the
requirements of 5.7.
6.2.7 Safety requirements
Check the grounding, safety marks, leakage current to the ground, electric strength, temperature rise of the panel, according to the method specified in 6.4 test type, which is specified in Chapter 4 of GB/T 11463, AND the fixed-time fixed-quantity truncation test program 1-2, which is specified in the test program, to carry out the reliability test, according to the requirements of 5.14. 7.2.4 Judgement criteria for qualification
In the respective inspections of 7.2.3.1, 7.2.3.2, 7.2.3.3, it is not allowed for critical failures; however, it is allowed to have two non-critical failures, otherwise it is judged as unqualified. For the inspections of 7.2.3.1, 7.2.3.2, 7.2.3.3, if non- critical failure occurs, it may continue the inspection, from the disqualified item, after repair. It is allowed to make reinspection twice. If there is still unqualified item, it shall double the samples from the same batch of products, to carry out inspection for the unqualified items. If it is still unqualified, the identification inspection is judged as unqualified.
The judgment of inspection qualification in 7.2.3.4 is made, in accordance with the Failure and judgement criteria of failure in Chapter 7, as well as the Acceptance and rejection judgement in Chapter 8 of GB/T 11463.
7.3 Quality consistency inspection
7.3.1 Inspection grouping
Quality consistency inspection is divided into group A inspection, group C inspection, group D inspection, group F inspection (see Table 17). Each group of inspections is carried out by the quality inspection department of the panel manufacturer, OR is entrusted to a qualified product quality supervision and inspection agency to conduct, during which the ordering party can send
representatives to participate.
7.3.2 Group A inspection
7.3.2.1 Inspection attributes
Group A inspection is a batch-by-batch inspection, which is a non-destructive test, performed on all the panels produced OR all samples in an inspection batch.
7.3.2.2 Inspection items
The items and order of group A inspection shall be in accordance with Table 17. 7.3.2.3 Sampling plan
The finished panels must be 100% inspected.
7.3.2.4 Judgment of qualification
Group D inspection includes electromagnetic compatibility test, wind pressure resistance test of stadium panel, salt spray test according to the contract. 7.3.4.2 Inspection cycle
Same as group C inspection.
7.3.4.3 Sampling plan
Randomly select two panels from the batches, that have passed the group A inspection, as samples, to conduct electromagnetic compatibility test, according to 5.11. Randomly select two panels, from the stadium panels, that have passed the group A inspection, as samples, to conduct the wind pressure resistance test of the stadium panel, according to the requirements of 5.12. Randomly select three display module groups of the closed-unit box structure, from the panels, that have passed the group A inspection AND to be subject to the salt spray test according to the contract, as the samples, to conduct the salt spray test, according to the requirements of 5.13.
7.3.4.4 Qualification judgment
Same as group C inspection.
7.3.5 Group F inspection
7.3.5.1 Inspection attributes
Group F inspection is a reliability life test. According to the provisions of 7.3.4 in SJ/T 11141-2003, it is recommended to adopt the sequential test program 2- 3, which is specified in the reliability test type and test plan in Chapter 4 of GB/T 11463, to carry out the reliability test, according to the requirements of 5.14. 7.3.5.2 Qualification judgment
According to GB/T 11463 Chapter 7 Failure and judgement criteria of failure, Chapter 8 Acceptance and rejection judgments, for the panel which fails the reliability test, it is not allowed to be exit-factory. Meanwhile, it shall reinspect all work-in-progress and finished products. After finding the cause of the problem, perform the reliability test again.
8 Markings, packaging, transportation, storage
The marking, packaging, transportation, storage of the panels shall meet the requirements of SJ/T 10463.
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