"Recently, foreign media gmsarena visited the equipment laboratory of Huawei glory Beijing joint R & D center to understand the testing process of mobile phones. The tested mobile phone will first enter the distortion test center and receive pressure from all directions. The purpose of this test is not to break the phone, but to check whether the performance of the phone is not affected when it is bent to the allowable limit.
Smart phones integrate advanced technology, and their manufacturing, R & D and testing processes are also wonderful. Most of the world's major mobile phone manufacturers have their own experimental centers to ensure that the mobile phones produced are solid and durable.
The operation principle of the connector durability tester is more clear at a glance: the service life of the connector is tested through thousands of times of plugging. At the same time, another test will be carried out, that is, apply force to the inserted connector laterally to ensure that some parts will not break. Through this test, it can ensure that the usb-c interface and headset interface can continue to work normally in time under extreme conditions.
Of course, there is an essential drop test. Unlike all videos on YouTube that lack scientificity and repeatability, glory uses special machines to run the equipment in a controlled manner. The staff place the mobile phone at a specific angle and make it fall from a specific height. Tests from different angles will be carried out many times to ensure that there are no weak points in the structure of the mobile phone.
The falling of the mobile phone is not directly operated by the staff, but through a machine, accelerate the mobile phone to the position of marble and release it at the last moment to ensure that the mobile phone will not rotate in the air, but hit the ground at a predetermined angle. Interestingly, the test is very strict, so the slate needs to be replaced every three months.
Next is the "oven" test. The temperature inside the oven is as high as 55 degrees Celsius and the humidity is as high as 90% - which is true in some parts of the world. The phone is placed inside for several days to ensure that no damage to its internals is caused in this case.
Of course, there are tests in ordinary dust and humid environments. Smart phones do not need to reach IP67 or IP68 to cope with fog or seasonal rain, but the equipment in all price segments must be tested, which is a mandatory requirement of Chinese regulators and some other markets.
Radio frequency interference (RFI) test is an important link. The mobile phone is installed on a yellow head that can simulate the conductivity, size and direction of the human head. The room is completely isolated, so the signal strength can be accurately controlled to ensure that the reception meets the standard.
Next is the sound room. There is a huge foam wall in the room, which is very quiet. People can even hear their heart beating. The orange robot arm is connected to speakers and headphones to measure volume and ambient noise. There are huge loudspeakers around the equipment, which emit all kinds of noise such as city, mountain forest and storm. Even if some conditions do not exist in the real world, this controlled environment can ensure that everything is normal.
Usually, people will not see or hear about the laboratory and test steps unless one of the components fails in a large number. However, we can understand that manufacturers do attach great importance to the durability of products. If some parts fail, it is due to an abnormal design that shows different performance in reality and in the laboratory, rather than negligence.
Top recommendations:
NXP lpc54018 Internet of things module om40007 enables your solution to land faster
Texas Instruments msp-exp430fr2355 launchpad development kit makes design and development simple and intuitive
Microchip technology sr087 power supply demonstration board, a new choice of switching power supply
Bosch bmi088 high performance IMU works with you to improve the flight and navigation experience
Roma semiconductor sensorshield-evk-003 Evaluation Kit, a board with "seed and material"
Intel realsense depth camera D400 series "more convenient secret" is waiting for you to find out
Analog devices eval-adxl362 evaluation board gives developers and designers more choices
Cypress Semiconductor psoc6 ble development kit, beautiful design is about to happen
STMicroelectronics vl53l1x time of flight ranging sensor, absolute ranging without fear of color and reflection
NXP i.MX 8mguad Evaluation Kit mcimx8m-evk is a high-performance development tool out of the box
Infineon im69d120 and im69d130 xensiv MEMS microphones are designed for low distortion and high signal-to-noise ratio
Original address: https://www.eeboard.com/news/shouji-49/
Search aiban.com and pay more attention. You can master the latest development board, intelligent hardware, open source hardware, activities and other information every day. Recommend attention!
[wechat scanning can be followed directly]“
Our other product:
