Huawei's genius boy-Zhihui Jun!

Summary : Whether it is an embedded or a computer, you must know about Zhihui. If you don't know yet, then go to Baidu! Jun Zhihui should be the big brother who every electronics enthusiast longs for but is eager and out of reach. Zhihuijun graduated from the University of Electronic Science and Technology of China in 2018 and then entered the OPPO algorithm post. Now Zhihuijun is already an AI architect of Huawei. He studied at the University of Electronic Science and Technology of China. An UP master who pursues the ultimate in works. He loves hardware development and has been updating hardware DIY videos during the period, which has been sought after by many netizens. Today, I will introduce "B station hard-core UP master and "stack overflow" engineer Zhihuijun.

The current Jun Zhihui has joined the " Huawei Talented Youth Project ."

Ren Zhengfei said when proposing this plan:

" This year we will recruit 20-30 talented teenagers from all over the world, and next year we also want to recruit 200-300 talented teenagers from around the world. These talented teenagers are like'loaches'. They will liven up our organization and activate our team. . "

The Huawei Talent Program has very high requirements for applicants: those with a wealth of published papers and citations in top international journals; with excellent and rich commercialization results in research directions; those with well-known competition rankings are preferred. The recruitment process for “Genius Youth” is very strict. Generally, it takes about 7 rounds of processes, and finally passes through the interview with Huawei’s president. Through this program, Huawei’s “geniuses” are recruited with an annual salary of 1 million. They can join the “Huawei Genius Program”. "It is also a proof of his own strength.

Let's take a look at some very hardcore works of Zhihui Jun! The following will start with the works with the highest number of broadcasts at station B.

The strongest small TV at station B

The most mini Linux computer in the entire network

Involved knowledge: electronic foundation, electronic component selection, circuit schematic design, high-speed circuit PCB design, electronic component welding technology, circuit board debugging, startup program UBOOT cutting and transplantation, linux kernel cutting and transplantation, file system, low-level Drivers (C language, ARM architecture assembly, Linux kernel architecture), upper-level applications (C++, Qt, JAVA, Python, etc., deep learning, machine learning, Opencv, neural networks, natural language processing), static blog server construction, advanced Mathematics, linear algebra, probability theory, discrete mathematics, 3D modeling, 3D printing, engraving machine, video post-production, anti-hair loss technology.

[Homemade] It took three months for the technology house to UP, and self-made the strongest small TV at station B! [Extremely hard core] [3 minutes from sketch to real object]

L-ink_Card

This is a mini NFC smart card designed to solve some of the pain points encountered when individuals use IC cards, based on STM32L051 and ST25DV. In addition, an electronic ink screen and a supporting APP are used for display content customization.

FOC vector controller

FOC (Field-Oriented Control), literally translated as field-oriented control, is also called vector control (VC, Vector Control), which is currently the best method for high-efficiency control of brushless DC motors (BLDC) and permanent magnet synchronous motors (PMSM) one. FOC aims to precisely control the size and direction of the magnetic field, so that the motor has a stable torque, low noise, high efficiency, and high-speed dynamic response. To put it simply, FOC is a drive control method for brushless motors. It allows us to control the brushless motors at the pixel level and achieve effects that many traditional motor control methods cannot achieve.
Insert picture description here

PocketLCD

This is a power bank that supports PD charging and comes with a 1080p display. On the back is the Hello World program written in Java, which looks very geeky.

The physical effect is very beautiful, it can be said to be a work of art.

While charging the Raspberry Pi, it can also act as its display:

choose to use the HDMI interface as the video signal input. Installed on the power bank is a mobile phone display. This kind of small display is basically MIPI interface, this interface is specially optimized for mobile phone equipment, and has a trend of high speed and low power consumption. But it cannot be directly driven by HDMI. Therefore, a hardware module that converts HDMI to MIPI is needed. Use CNC engraving machine to make small acrylic middle frame and processing of panel, use reflow soldering to solder all components on PCB board.

Zhihui Jun has open sourced the entire software and hardware of the power bank, but if you don't have the same equipment as the boss, it is really not easy to recreate one. On the day of the video release, all technical details were open sourced and 1.2k stars were obtained in just 3 days. The most convenient place for this external screen is the lack of a power cord and the addition of a power bank function. No matter which function, it can be played, and there is even an "integrated effect".
The delay effect is also very good. It is no problem to play "Sekiro" externally. The actions of the characters are almost synchronized with the operation of the handle (2 times quick effect).

Parameters such as color and viewing angle are also ideal.

From portable HDMI displays, development boards to cameras, the functions that can be achieved by ordinary external screens can be achieved. This is an 8000 mAh power bank, C port supports 18W fast charge input, A port supports 18W PD fast charge output. When the C port is fast charging, a blue indicator light will be displayed on the screen; the A port can be used to charge other conventional devices.

Since HDMI will provide a certain amount of power to the screen, the entire display actually consumes low electricity. In theory, this screen can last for more than a week.