Auto parts

Automotive electronics testing

Automotive electronics testing

As a complex industrial product, as people have more more requirements for car control, entertainment, navigation in-vehicle communication, the system of the car is becoming more more complex. The control system of the car is based on electronic equipment. Reliability directly determines the safety operational reliability of the entire vehicle. Generally speaking, the operating environment will affect the durability operational perance of electronic devices units. Therefore, the environmental reliability of automotive electronic components has become one of the core issues of automotive reliability.

Electronics Equipment reliability test stard


1, ISO


In the International Organization for Stardization, ISO/TC22/SC3 is responsible for stardization in the field of automotive electrical electronic technology. The application environment of automotive electronic products includes electromagnetic environment, electrical environment, climate environment, mechanical environment, chemical environment, etc. The current ISO stard environmental conditions test stards for automotive electronics mainly include the following aspects:
ISO16750-1: Road vehicles-Environmental conditions tests of electrical electronic products: General rules
ISO16750-2: Road vehicles-Environmental conditions tests for electrical electronic products: Power supply environment
ISO16750-3: Road vehicles-Environmental conditions tests for electrical electronic products: Mechanical environment
ISO16750-4: Road vehicles-Environmental conditions tests of electrical electronic products: Climatic environment
ISO16750-5: Road vehicles-Environmental conditions tests for electrical electronic products: Chemical environment
ISO20653 The level of protection of automotive electronic equipment against foreign objects, water contact
ISO21848 Road vehicles-Power supply environment for electrical electronic equipment with a supply voltage of 42V 
At present, the environmental test stards for domestic automotive electronic products are mainly stipulated in accordance with the technical conditions of the products. The National Automotive Stardization Technical Committee (SAC/TC114) is ulating corresponding national industry stards with reference to ISO stards.
The ISO stard has been wiy adopted by European American car manufacturers, while the requirements of Japanese car manufacturers deviate greatly from the ISO stard. In order to ensure that the stard limit is reached, the environmental condition stards of the internal control of the automobile manufacturers are generally more stringent than the requirements of ISO .
 

2 , AEC series of stards
In the 1990s, Chrysler, Ford General Motors established the Automotive Electronics Committee (AEC) to establish a set of common parts qualification quality system stards, AEC established quality control stards. AEC-Q-100 The certification specification for chip stress testing is the first stard of AEC . AEC-Q-100 was published in 1994 , because parts that meet the AEC specification can be used by the above three automakers at the same time, it promotes the willingness of component manufacturers to exchange their product characteristic data, promotes the versatility of auto parts The implementation of the AEC stard has gradually become a general test specification for automotive electronic components.
After 10 years of development, AEC-Q-100 has become a general stard for automotive electronic systems. After AEC-Q-100 , AEC-Q-101 for discrete components AEC-Q-200 for passive components were successively ulated, as well as guiines such as AEC-Q001/Q002/Q003/Q004  Principle.


3. Mainstream car factory test stards

Car manufacturer Related stards
Volkswagen  VW 80101 Test conditions for electrical electronic installation parts VW TL226 Technical requirements for automotive interior spray parts
General Motors  GMW 3172 Environmental reliability analysis design requirements for electrical electronic components verification procedures
GMN 10083 Interior Reliability of Plastic Spray Parts
Mazda  MES  PW67600 electronic device technical requirements
Ford  FLTM BI series stard

 

 

Part Summary of common test conditions for automotive electronics


Different test environment conditions will have different impacts on the product. The environmental reliability requirements of different parts of the car are different. For example, for the temperature environment conditions, the upper part of the front dashboard of the car requires a maximum of 120°C, the lower part of 71°C, the cabin floor. 105°C so on. Therefore, the environmental reliability test conditions of automotive electronic products with different uses different installation positions are not the same. The following table lists the main environmental test items test conditions for some common automotive electronic products.


1. Test object conditions test equipment deion

 

test object Test conditions Type of test equipment
IC for locomotive: –40℃~125℃, wind, sun, high vibration Comprehensive environmental testing device
Dashboard operation test: -40℃ ~85℃  Alternating heat humidity test chamber
motor controller test conditions: Operation test temperature 40 ℃~110 °C  Alternating heat humidity test chamber
Test conditions for Bluetooth headsets for cars: Storage test temperature: -40℃~+85℃, operation test temperature -20℃~+65℃  Alternating heat humidity test chamber
Satellite positioning (GPS) test conditions: High temperature operation test temperature: 85℃
Low temperature operation test temperature: -40 ℃ normal temperature→70℃(2 hours)→ -20℃(2 hours)→ normal temperature
Alternating heat humidity test chamber
Tire pressure sensor:

 
High temperature operation test temperature: 125℃ Low temperature operation test temperature: -40℃  Alternating heat humidity test chamber
Car cables wires: High temperature operation test temperature: 150℃ 
Low temperature operation test temperature: -40℃   
Alternating heat humidity test chamber
Car LCD screen High temperature humidity test operation: 40℃/90%RH (no condensation), 300Hrs     ;                 High temperature operation test temperature: 50°C, 60°C, 80°C, 85℃, 300Hrs                    low temperature operation test temperature: 0°C, -20°C, -30℃, 300Hrs Alternating heat humidity test chamber
Temperature cycle test: -20℃(1H)←RT(10min)→60℃(1H), 5cycles  ; Heat cold shock test chamber

 

 

2 , List of common automotive electronic test stards


At present, there are many environmental reliability testing requirements stards for automotive electronic products around the world, the commonly used stards are mainly ISO 16750 series, EIA-364 series, etc. GRGT Radio Television Metrology can provide automotive electronic testing services, as follows As shown in the table.

 

IEC60068-2 Environmental test of electrical electronic products EIA-364 series stard connector
MIL-STD-202 electronic electrical components ISO 16750 car electrical equipment
MIL-STD Microelectronics IPC-TM-650 PCB board 2.6 part
MIL-STD-810 Basic environment test JASO-D001 Car electronic equipment
MIL-STD-750 Semiconductor components AEC-Q200 stress certification of passive components
 

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