A range

　　Xi'an LED display LED display provides the standard definition, classification, technical requirements, test methods, inspection rules, and sign requirements of packing and shipping store. This standard applies to LED display products. It is the LED display product design, manufacture, installation, use, quality inspection and develop technical standards, technical documents of the main technical basis.

　　2 quoted standard

　　The following standards contain provisions which, through reference in this standard, constitute provisions of the standard. In the time of publication, the editions indicated were valid. All standards will be amended to use the standard use of the following parties should explore the possibility of the latest version of the standard.

　　GB191-90 packaging and storing graphic mark

　　GB2423.1-89 electrical and electronic products environmental testing procedures for test A: cold test methods

　　GB2423.2-89 electrical and electronic products environmental testing procedures for test B: high-temperature test methods

　　GB2423.3-89 electric and electronic products environmental testing procedures for testing a constant heat test method Ca

　　GB4943-95 information technology equipment (including electrical business equipment), safety

　　GB6388-86 transport package shipping and receiving signs

　　GB6587.4-86 vibration test of electronic measuring instruments

　　GB6587.6-86 transport pilot electronic measuring instruments

　　GB6593-86 quality inspection rules for electronic measuring instruments

　　GB9813-88 mini-digital computer general technical conditions

　　GB11463-89 reliability tests of electronic measuring instruments

　　SJ/T10463-93 electronic measuring instruments, packaging, marking, storage requirements

　　3 Definitions

　　This standard uses the following abbreviations and definitions:

　　3.1 LED light-emitting diode ligth emitting diode LED light-emitting diode abbreviation

　　3.2 LED display LED panel controlled by a certain way, used to display text, text, graphics, images, animations, quotes and other information as well as television, video signal by the array of LED devices composed of display screen.

　　3.3 display unit display unit installed by the circuit and determine the structure and function of the composition with a LED display shows the smallest unit.

　　3.4 fatal failure critical defect on the use, maintenance or related to this product may cause harm to the person's failure or unsafe conditions, or the unit does not meet the requirements of the important characteristics of the product quality characteristics or unit serious non-compliance.

　　3.5 out of control point of out-of-control point LED status display and control requirements of the state and was incompatible with the basic discrete awarded the LED light points.

　　3.6 Pseudo-color LED display pseudo-color LED panel LED display different areas of the installation of a different color LED device composed of a single-color LED display.

　　3.7 Full Color LED Display all-color LED panel by the red, green and blue color LED devices composed of a variety of colors and adjustable LED display.

　　Class 4

　　LED display can be classified according to the following conditions:

　　4.1 LED display by use of the environment into the indoor use of the environment and outdoor LED display LED display.

　　4.2 Display color LED display by the display color is divided into single-color LED display (with pseudo-color LED display), dual-color LED display and full-color (trichromatic) LED display. By gray scale can be divided into 16, 32, 64, 128, 256 grayscale LED display and so on.

　　4.3 shows the performance of LED display by the display performance is divided into text LED display, graphic LED display, LED display computer video, television video LED display and LED display and so on. LED display generally includes securities, interest rates, futures and other uses of LED display.

　　4.4 Non-market type of basic points emitting LED display, indoor LED display by use of the LED can be divided into single-point diameter Φ 3mm, Φ 375mm, Φ 5mm, Φ 8mm, and Φ 10mm etc. display; outdoor LED display by using the pixel diameter can be divided into Φ 19mm, Φ 22mm LED display and Φ mm26 other.

　　4.5 LED display market class in size by using the digital control can be divided into 2.0cm (0.8inch), 2.5cm (1.0inch), 3.0cm (1.2inch), 4.6cmm (1.8inch), 5.8cm (2.3inch), 7.6cm (3inch) and other LED display.

　　5.1 LED display hardware use of the environment

　　Hardware, including LED display LED display according to type, size, use the on-site conditions to determine the general-purpose computer parts, communication lines, dedicated data conversion section and display section. Specification should describe in detail:

　　a. the host computer, a variety of matching cards, peripherals, and communication interface requirements;

　　b. the requirements of the communication line and indicate the maximum communication distance;

　　c. part of data conversion means of communication with the host computer;

　　d. Power requirements and structure installation requirements.

　　5.2 LED display software environment

　　LED display on the different properties of the display should be configured to meet the functional requirements of the display software, the software has the following features:

　　a. comply with serialization, standardization requirements are backward compatible;

　　b. the use of detailed specification provided in the operating system and language;

　　c. with a complete self-test procedures and according to need with all levels of diagnostic procedures;

　　d. The special-purpose LED display with the corresponding special software.

　　5.3 Structure and Appearance

　　5.3.1 LED display part of the structure can be steel, aluminum, wood and other materials. Demands rugged, beautiful.

　　5.3.2 Appearance LED display frame no scratches. Outdoor LED display pixel pipe installation should be consistent, no broken loose and shell out.

　　5.4 Safety requirements under the LED display is GB4943 Class I safety equipment.

　　5.4.1 LED display protective grounding terminal.

　　5.4.2 Safety Mark

　　5.4.2.1 LED display protective earth terminal should be marked.

　　5.4.2.2 LED display and switch the power supply at the fuse should be a warning sign.

　　5.4.3 LED display on the ground leakage current of the leakage current should not exceed 3.5mA (rms).

　　5.4.4 Dielectric strength LED display can be 50HZ, 1500V (rms) voltage 1min test insulation breakdown should not occur.

　　5.4.5 temperature LED display is used when the party reached thermal equilibrium at the temperature does not exceed the metal part of the hard-45K, insulation materials, temperature does not exceed 70K.

　　5.5 LED display performance characteristics

　　Text and graphic LED display LED display in the detail specification should have moved out of the way and under the display.

　　Computer video LED display should have:

　　Animation capabilities. Required LED display animation and computer monitor display area corresponding to the same; text display. Requirements of the text display is stable, clear crosstalk; grayscale function. Require a detailed specification provided in the level of gray. In addition to TV video LED display with animation, text display, gray scale function, should be able to show TV, video screen. LED display market with its corresponding display capabilities.

　　5.6 Uniformity should be provided in the detailed specification of the LED display uniformity requirements.

　　5.7 out of control point indoor LED display out of control points is not greater than ten thousandths, outdoor LED display out of control points should not be in the thousandths; and discrete award.

　　5.8 Power Supply power supply for the LED display 220V ± 10%, 50H Z ± 5% or 80V ± 10%, 50HX Z ± 5% should be provided in the detailed specification various LED display unit display area of the largest power or total power consumption LED display.

　　5.9 Environmental adaptation

　　5.9.2.1 The temperature of the indoor environment screen temperature: low temperature environment: 0 ℃; temperature: +40 ℃. Storage environment temperature: -40 ℃; temperature: +60 0 C.

　　Room shielding of ambient temperature: low temperatures the working environment: optional -20 ℃, -10 ℃; temperature: +50 ℃. Storage environment temperature: -40 ℃; temperature: +60 ℃.

　　5.9.2.2 When hot and humid at the highest operating temperature, LED display should be able to 90% relative humidity under normal working conditions all.

　　5.9.3 LED display to withstand vibration cars, trains, aircraft and other transportation, handling, moving in by the vibration. Car screen should be installed in the vehicle running properly.

　　5.9.4 LED display can be used transport vehicles, trains, aircraft and other transportation common carriers.

　　5.10 reliability LED display unit, the average time between failures MTBF (ml) of not less than 10000h.

　　6 inspection methods

　　6.1 LED display with the visual environment of the hardware to use way to check the hardware to use LED display environment should meet the requirements of 5.1.

　　6.2 LED display software environment with LED display visual way to check software environment should be consistent with the requirements of 5.2.

　　6.3 Structure and appearance of the LED display with a visual way to check the structure and appearance, should be consistent with the requirements of 5.3.

　　6.4 Safety requirements

　　6.4.1 Grounding visual way to check the LED display, should meet the requirements of 5.4.1.

　　6.4.2 visual way to check the security token with the security tag LED display, should meet the requirements of 5.4.2.

　　6.4.3-to-ground leakage current of 1.1 times the rated power supply voltage, the test LED display power cord between the metal frame to ground leakage current shall meet the requirements of Article 5.4.3.

　　6.4.4 Dielectric strength LED display through the power switch is in position, the power input and the metal frame or touched the metal structure can be applied between the 1500V (AC RMS), 1min, should meet the requirements of 5.4.4.

　　6.4.5 LED display temperature work an hour later with a point of testing the thermometer can reach point temperature, should meet the requirements of 5.4.5.

　　6.5 Performance characteristics of different types according to the LED display, LED display of the performance characteristics of the inspection, shall meet the requirements of 5.5. Of text, graphic LED screen test software by using the show moved out of the way of visual inspection and display. LED display on the computer video through visual, compared with the screening examination animation computer animation feature, the computer monitor with LED display and text display for the examination, with special test software and its grayscale function. LED display on the TV video in addition to the above animation, text, gray scale function tests, there should check the TV video source and video functions. A variety of LED display, you should check with the appropriate test software market display.

　　6.6 with a visual way to check the uniformity of LED display screen uniformity, should meet the requirements of 5.6.

　　6.7 out of control point with a visual way to check the LED display of the control point should meet the requirements of 5.7.

　　6.8 watt power supply with a meter to measure the power supply power LED display, should meet the requirements of 5.8.

　　6.9 Environmental adaptation

　　6.9.1 high temperature load test load test according to the provisions of GB2423.2 display unit. Indoor screen in the (40 ± 2) ℃ under the conditions of the external screen room at (50 ± 2) ℃ under the conditions of power work 8h, each hours to conduct an inspection. Text and graphic LED display LED display moved out of the way to check, display, uniformity and control point for computer-video and TV video inspection animated feature LED display, text display, gray scale function, uniformity and control point on the LED display the ticker function tests. Should meet the 5.5, 6.6 and 5.7 requirements.

　　6.9.2 High temperature storage test high-temperature storage test at GB2423.2 the provisions of the display unit at (60 ± 2) ℃ under the conditions of storage 4h, 4h at room temperature recovery after the LED display on the text and Figure Man moved out of the way to check the LED display, display, and control all of the points set. Video and TV video on the computer check animated features LED display, text display, gray scale function, uniformity and control points. Quotes of the LED display to show function tests. Shall meet the 5.5, 5.6 and 5.7 requirements.

　　6.9.3 humid heat load test load test according to the provisions of GB2423.3 display unit. For indoor screens in the (40 ± 2) ℃, relative humidity of 87% - 93% of the conditions, the external screen in the room (50 ± 2) ℃, relative humidity of 87% -93% of the power under the conditions of work 8H, check once an hour into the set. Text and graphic LED display LED display moved out of the way to check, display, uniformity and control point set. Market for LED display for function tests. Should meet the 5.5, 5.6 and 5.7 requirements.

　　6.9.4 Damp heat test according to GB2423.3 constant humidity test provisions of the display unit. For indoor screens in the (40 ± 2) ℃, relative humidity of 87% -93% of the conditions, the external screen in the room (50 ± 2) ℃, relative humidity of 87% -93% under the conditions of storage 48H. Storage end of the experiment immediately after the leakage current, electric strength and temperature measurements should meet 5.4.3, 5.4.4, 5.4.5 to be required. And then at room temperature after recovery 4H, text and graphic LED display LED display moved out of the way to check, display, uniformity and control point for computer-video and TV video inspection moved out of the way LED display, display , uniformity and control point set. Video and TV video on the computer check animated features LED display, text display, gray scale function, uniformity and control point on the LED display to check the display market. Shall meet the 5.5, 5.6 and 5.7 requirements.

　　6.9.7 Vibration Test Vibration Test BG6587.4 the provisions of the display unit in the vibration frequency 5H-55H-5H, amplitude 0.19MM conditions, 5IMN scan, two directions, each direction of the second scan. Test after the end of the text and graphic LED display LED display LED display and graphic moved out of the way to check, display, uniformity and control points. video and TV video on the computer check animated features LED display, text display , gray energy, uniformity and control points. of LED display and LED display for graphic display market check. shall meet the 5.5, 5.6, and 5.7 requirements.

　　6.9.8 Transport Test operation tests according to GB6587.6 flow conditions for taxis level display unit. End of the experiment. Of text and graphic LED display LED display moved out of the way to check, display, uniformity and control points . video and TV video on the computer check animated features LED display, text display, gray scale function, uniformity and control points. Quotes of the LED display to show function tests. Shall meet the 5.5, 5.6 and 7 of the requirements set. On-board LED display mobile work should be carried out on-site transport tests.

　　6.10 reliability test reliability test according to the provisions of GB11463 display unit. A = 20%, B = 20%, DM = 3.0. Also allowed under the contract for reliability verification test set.

　　7 inspection rules

　　7.1 Test items

　　The identification of inspection and quality products for the consistency test, inspection rules by GB 6593 in the relevant provisions and requirements of its test items according to the provisions in Table 1.

　　Table 1 LED display of the test items and requirements

　　Identification of pilot projects testing technical requirements for testing the consistency of quality

　　(Chapter of the number) test method

　　(Chapter of the number)

　　Design and production Group C Group F Group A

　　Hardware using the environmental pollution ● ● ● - - 5.1 6.1

　　Software environment ● ● ● - - 5.2 6.2

　　Appearance and structure ● ● ● - - 5.3 6.3

　　Safety requirements ● ● ● - - 5.4 6.4

　　Performance characteristics ● ● ● - - 5.5 6.5

　　Uniformity ● ● ● - - 5.6 6.6

　　Control points ● ● ● - - 5.7 6.7

　　Power supply ● ● ● - - 5.8 6.8

　　Environment ● ● - ● - 5.9 6.9

　　Reliability ● ● - - ● 5.10 6.10

　　Use in the field ● ○ - - - according to enterprise standard according to enterprise standard

　　● must be tested for the project; ○ can choose to be tested for the project; - not to test for the project.

　　7.2 Identification of test

　　7.2.1 Identification of test into the design and production of identification test identification testing.

　　7.2.2 Identification of test specified by the superior quality inspection department or unit responsible for the commission.

　　7.2.3 Sampling methods and test items

　　7.2.3.1 Use of LED display hardware environment, software environment, structure and appearance, safety requirements, performance characteristics, uniformity, uncontrolled, check the power supply should meet the requirements to be 5.1-5.8.

　　7.2.3.2 from 7.2.3.1 inspection of the LED display to obtain sets of random schedule .9 display unit for environmental adaptability test.

　　7.2.3.3 Identification of the LED display on the schedule. 10 requirements for reliability tests. GB11463 requirements using regular Censored pilot program 1-2.

　　7.2.3.4 Identification of the design of the LED display for use in the field trials.

　　7.2.4 Qualified first .2.3.1,7.2.3.2 inspection criteria, allowing a secondary non-fatal failure, than those considered as unqualified.

　　7.2.3.3 The test shall meet the requirements of GB11463.

　　7.2.3.4 The test shall comply with the standards and requirements of the standard LED display enterprises.

　　7.3 Quality conformance inspection

　　7.3.1 Quality conformance inspection tests are divided into group A, C and F group test group test.

　　7.3.2 A group of test

　　7.3.2.1 A test group of the basic requirements for the LED display test.

　　7.3.2.2 A set of test items according to the provisions of expression. LED display to be set by inspection. For any failure of products must be returned to a production sector repair

　　After re-offer testing.

　　7.3.2.3 A group of test units produced by the LED display quality inspection department or unit responsible for quality inspection commission, orders may send representatives.

　　7.3.3 C Group test

　　7.3.3.1 C Group test test for environmental adaptability.

　　7.3.3.2 mass-produced products, production interruption longer than one month, each batch should be tested for environmental adaptability, continuous production of the product once a year

　　Environmental adaptability test. Change the design, engineering technology, major components and materials, to conduct environmental adaptability test.

　　Adaptability to environment test 7.3.3.3 LED display production unit by the quality inspection department or unit responsible for quality inspection commission.

　　A group of consistency in the quality inspection of the display unit in the random access units, environmental adaptability test.

　　7.3.3.4 In the whole process of adaptive testing environment to allow a secondary non-fatal failure. The restoration project failed after starting from the emergence of continued testing.

　　Environmental adaptability test failed LED display, ban the factory. And the need for all-in-progress and finished goods for re-inspection. Is always to find out the reasons for re-examination of environmental adaptation.

　　7.3.3.5 The environmental adaptability of the test sample should be printed with the mark, not as a genuine factory.

　　7.3.4 F group test

　　7.3.4.1 F test for the reliability of the test group. Sequential use GB11463 censored under the pilot program 2-3

　　7.3.4.2 mass-produced products, the reliability should be difficult to test every year, two years of continuous production of products to conduct a reliability test, change the main design, technology, the main components and materials to conduct reliability tests.

　　7.3.4.3 reliability test produced by the LED display unit of the quality inspection department or commission unit responsible for quality inspection. Consistency in the quality inspection of the display unit in the sample according to the requirements of GB11463, the reliability test.

　　7.3.4.4 failed for reliability test of the LED display, ban the factory. And the need for all-in-progress and finished goods for re-inspection. Always find out the reason for the re-test reliability.

　　7.3.5 quality standards to determine the first test should conform to the specifications, AF group test should be qualified. Consistency of quality inspection.

　　8 signs packing and shipping store

　　LED display packaging, marking and storage shall comply with SJ / T 10463 requirements.

　　8.1 mark

　　8.1.1 Product logo

　　8.1.1.1 should be the appropriate place in the LED display installed on the nameplate.

　　8.1.1.2 nameplate shall contain the following

　　a. mark;

　　b. Product name or model;

　　c. date of manufacture;

　　d. Name of manufacturer.

　　8.1.2 LED display signs outside the box packaging symbol shall meet the requirements of GB6388

　　a. Model and name;

　　b. mark;

　　c. Name of manufacturer;

　　d. the "up", "Handle with care", "fear of wet" and icon signs, these signs should be consistent with the provisions of GB191.

　　e. indicate the number of products, gross weight and packing date.

　　8.2 Packaging

　　8.2.1 comply with the packaging marked with the provisions of the box packaging.

　　8.2.2 Packaging shall comply with moisture, vibration, corrosion requirements.

　　8.2.3 Each batch should be calibrated in the box box with the product certificate of inspection, packing lists, parts lists, and random file attachment list.

　　8.3 Transport packaged product can be used any means of transport transport, the transport process should avoid the rain hit, long sun drying, exposure to corrosive gases and mechanical damage.

　　8.4 Storage Temperature Range Storage LED Display 0-40 ℃, relative humidity less than 80%, acid-free environment and corrosive gases, and no strong mechanical vibration, shock and strong magnetic field.

　　Petroleum products

　　Petroleum products can be divided into: fuel oil, petroleum solvents and chemical raw materials, lubricants, paraffin, petroleum asphalt, petroleum coke and other six categories. Among them, the largest output of various fuels, accounting for 90% of total production; most varieties of lubricants, yield about 5%. National product standards are developed to meet the needs of production and use.

　　Gasoline

　　Is the largest consumption of varieties. Gasoline boiling range (also known as the distillation process) is 30 ~ 205 ° C, a density of 0.70 to 0.78 g / cm 3, the product gas by burning the oil in the cylinder when the merits of anti-knocking combustion distinction is marked as Sim alkane values 70,80,90 or higher. No. Yu, performance and good Yu, gasoline is mainly used for automobiles, motorcycles, boats, helicopters, agriculture, forestry, aircraft fuel. Commodities have added to gasoline additives (such as anti-knock agent tetraethyl lead) to improve the use and storage performance. Subject to environmental requirements, and will restrict the content of aromatic hydrocarbons and lead.

　　Jet fuel

　　Used primarily for jet aircraft. Boiling point range of 60 ~ 280 ℃ or 150 ~ 315 ℃ (commonly known as aviation gasoline). To meet the needs of high-altitude low-temperature high-speed flight, these oil requires heat,-50C does not appear in the crystalline solid. Kerosene boiling point range of 180 ~ 310 ℃ mainly for lighting, live cooking. Requirements of the flame stable, but not bright black smoke. Current production is not.

　　Diesel fuel

　　Boiling point range of a 180 ~ 370 ℃ and 350 ~ 410 ℃ categories. Processing of petroleum and its products, used on the low boiling point or boiling range as light, on the contrary become heavy. Therefore, the former is called light diesel oil, heavy diesel oil which is known. Freezing point of diesel by commodity classification, such as 10, -20, etc., that low temperature, diesel fuel is widely used in large vehicles, ships. As high-speed diesel (automotive) fuel-efficient than gasoline, diesel demand is growing faster than gasoline, some small cars use diesel. Quality requirements for diesel combustion performance and liquidity is good. The higher the cetane number of said combustion performance with better, Daqing crude oil made up to 68 cetane number of diesel. High-speed diesel engine using diesel cetane number of 42 to 55, low of 35 below.

　　Fuel oil

　　As boilers, ships and industrial furnace fuel. Fuel oil with a viscosity of the size of goods to distinguish between different grades.

　　Solvent for flavor oil, grease, reagents, rubber processing, paint industry as a solvent, or cleaning equipment, instruments, mechanical parts.

　　Oil obtained from oil lubricant oil of the total production of more than 95%. In addition to lubrication, but also has a cooling, sealing, corrosion, insulation, cleaning, energy transfer effect. The largest output of the internal combustion engine oil (40%), the rest of the gear oil, hydraulic oil, turbine oil, electrical insulating oil, compressor oil, together accounted for 40%. Viscosity of lubricant by commodity classification, load, speed and low viscosity oils with high mechanical, or with a low viscosity oil. Production of oil refining equipment is made to take a variety of base oil refining process, plus a variety of additives, so it has special features, additional high value.

　　Grease

　　Commonly known as butter, add the lubricant thickening agent made of solid or semi-fluid, not to use lubricants for bearings, gear parts.

　　Paraffin oil

　　Including paraffin (10% of total consumption), floor wax, grease and other stone. The main job of packaging materials paraffin, wax, cosmetic raw materials and products, but also can be used as chemical raw materials produced fatty acids (soap raw materials).

　　Petroleum pitch

　　Primarily for road construction.

　　Petroleum coke

　　For metallurgy (steel, aluminum), chemicals (calcium carbide) industry as electrode.

　　In addition to the oil and commodities, but also get some of each refinery unit is a gas at room temperature, the product of general refinery gas, can be done directly or pressurized liquid fuel separation of liquefied petroleum gas, raw materials or chemicals can do. Refineries are many kinds of chemical raw materials, organic chemical products, raw materials base, a variety of oil, refinery gas can be produced according to different purposes, the production process used. The main raw material gas under atmospheric pressure of ethylene, propylene, ammonia, hydrogen, acetylene, carbon black. Liquid raw materials (liquefied petroleum gas, light gasoline, light diesel oil, heavy diesel oil) can be made by cracking the vast majority of the development of petrochemical-based raw materials needed (except acetylene), is the basis for the development of petrochemical industry. Currently, crude oil due to severe high-temperature coke, but not directly the production of basic organic raw materials. Refineries or benzene, toluene, xylene and other important aromatic provider. Finally, it should be noted, gasoline, aviation kerosene, diesel fuel additives to improve the additions more or less use, storage performance. Production of each product of oil refining equipment are standard additives and commodity basis having different devices can only reconcile the oil as a commodity to use. Oil additives with less effect large, is a chemical synthesis of fine chemical products, is necessary for the development of high-end products, should be actively developed.