QC/T 1169-2022 English PDF (QCT1169-2022)

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QC/T 1169-2022: Liquid crystal instrument for automobile
QC/T 1169-2022
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.10
CCS T 35
Liquid crystal instrument for automobile
ISSUED ON: APRIL 08, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 6
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Requirements ... 9
5 Test method ... 18
6 Inspection rules ... 23
7 Marking, packaging, storage, custody ... 25
Appendix A (Informative) Display symbols of instrument panel ... 26
Appendix B (Informative) Instrument connector diagram ... 27
Liquid crystal instrument for automobile
1 Scope
This document specifies the term, definitions, requirements, test methods, inspection
rules for liquid crystal instruments for automobiles.
This document is applicable to TFT liquid crystal instruments (including speedometer,
odometer, tachometer, fuel gauge, thermometer, oil pressure gauge, voltmeter, ammeter,
SOC meter, cruising mileage meter, urea level meter, barometer), which are used for
Category M and N automobiles. Other display instruments may make reference to this
standard.
2 Normative references
The contents of the following documents constitute the essential provisions of this
document through normative references in the text. Among them, for reference
documents, only the version corresponding to the date applies to this document; for
undated reference documents, the latest version (including all amendments) applies to
this document.
GB/T 2423.17-2008 Environmental testing for electric and electronic products - Part
2: Test method - Test Ka: Salt mist
GB 4094 Motor vehicles - Symbols for controls, indicators and tell-tales
GB/T 4094.2-2017 Electric vehicles - Symbols for controls, indicators and tell-tales
GB/T 6739 Paints and varnishes - Determination of film hardness by pencil test
GB/T 16422.2-2014 Plastics - Methods of exposure to laboratory light sources - Part
2: Xenon-arc sources
GB/T 18910.61-2021 Liquid crystal display devices - Part 6-1: Measuring methods
for liquid crystal display devices - Photoelectric parameter
GB/T 18655 Vehicles boats and internal combustion engines - Radio disturbance
characteristics - Limits and methods of measurement for the protection of on-board
receivers
GB/T 19951 Road vehicles - Disturbances test methods for electrical/electronic
component from electrostatic discharge
GB/T 21437.2-2008 Road vehicles - Electrical disturbances from conduction and
coupling - Part 2: Electrical transient conduction along supply lines only
GB/T 21437.3-2012 Road vehicles - Electrical disturbances from conduction and
coupling - Part 3: Electrical transient transmission by capacitive and inductive
coupling via lines other than supply lines
GB/T 28046.2-2019 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 2: Electrical loads
GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 3: Mechanical loads
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 4: Mechanical loads
GB/T 28046.5-2013 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 5: Chemical loads
GB/T 30038-2013 Road vehicles - Degrees of protection (IP-code) - Protection of
electrical equipment against foreign objects, water and access
QC/T 413-2002 Basic technical requirements for automotive electric equipment
QC/T 550 Vehicle buzzer
QC/T 727 Instrument for automobile and motorcycle
SJ/T 11394 Measure methods of semiconductor light emitting diodes
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Liquid crystal instrument for automobile
An instrument assembly consisting of at least one liquid crystal display, that
comprehensively reflects vehicle conditions to the driver, through information
display and alarms (including full liquid crystal instrument and combined liquid
crystal instrument).
3.2
Full liquid crystal instrument
4.1.1 Transparent glass or transparent plastic parts shall not have bubbles, inclusions,
ripples, spots, scratches, that affect the reading. The protective layer shall be uniform,
without obvious defects such as bubbles, spots, rust, peeling off. The liquid crystal
display shall not be cracked or deformed. All components fit together well, without
looseness, falling off, visible foreign objects.
4.1.2 Division lines, pointers, numbers, characters, symbols shall be clear and complete,
without refraction and reading distortion.
4.1.3 The lighting effect shall ensure that the division lines, pointers, numbers, text
symbols of various instruments can be seen clearly; there shall be no glare from strong
light.
4.1.4 When the signal indicator light is on, the various indication signals, symbols,
patterns, colors on the instrument shall be clear and complete, without flashing. When
the signal indicator is off, the signal state shall be clearly different from when it is on.
4.2 General provisions
4.2.1 Important information display
The vehicle speed information and alarm information, which are displayed on the liquid
crystal instrument, shall remain clearly visible, while the vehicle is running. The alarm
information such as brake system malfunction, direction signal, TPMS should be
displayed outside the liquid crystal display.
4.2.2 Unit and division
4.2.2.1 Pointer display
The units and divisions of pointers (including virtual and physical pointers) display
comply with the following requirements:
- Units and divisions for speedometer, odometer, engine tachometer, fuel gauge,
temperature gauge, oil pressure gauge, voltmeter, ammeter shall meet the
requirements of QC/T 727;
- The unit of the urea level gauge is expressed in %, which shall not be less than 3
divisions: 0-25%-50%-100%;
- The unit of the SOC display is expressed in %, which shall not be less than 4
divisions: 0-25%-50%-75%-100%;
- For the unit and division of the barometer (air cylinder pressure), refer to the
pressure gauge of QC/T 727;
- For the unit and division of the motor tachometer, refer to the engine tachometer
of QC/T 727.
4.2.2.2 Digital display meter
The unit and division of the digital display meter shall meet the following requirements:
- The unit of the cruising mileage meter is expressed in km; the division value is not
greater than 10 km;
- The unit of the speedometer is expressed in km/h; the division value is not greater
than 1 km/h (except that the speed is lower than 5 km/h);
- The unit of the urea level gauge is expressed in %; the division value is not greater
than 5%;
- The unit of the fuel gauge is expressed in %; the division value is not greater than
5%;
- The unit of the engine and motor tachometer is expressed in r/min; the division
value is not greater than 200 r/min;
- The unit of the voltmeter is represented by V; the division value of the fuel vehicle
voltmeter is not more than 0.5 V; the division value of the electric vehicle voltmeter
is not large than 1 V;
- The unit of the ammeter is expressed in A; the division value is not greater than 0.5
A;
- The unit of the SOC meter is expressed in %; the division value is not greater than
5%;
- The unit of the barometer is expressed in MPa; ...