Jumei’s Guide: Public transportation safety is the top priority. As the leading brand in the online car-hailing industry, Didi shoulders the heavy responsibility of protecting the safety of drivers and passengers. Relying on high-quality hardware foundation and high-precision algorithm, Didi Jushi recorder captures the road and in-car video information during the ride in real time, reminds the driver to drive safely, and at the same time effectively protects the safety of drivers and passengers, and resolves disputes between drivers and passengers. This article focuses on the product positioning, main functions, mainframe composition, hardware block diagram, working principle and other contents of the Jushi recorder.
When mentioning "Jushi", most friends will be unfamiliar, wondering what "Jushi" is? In fact, during the process of using Didi Chuxing, "Orange Vision" has been silently guarding every trip.
When you travel by Didi online car-hailing, if you receive a reminder from the travel app: do you agree to open the recording and video recording? Then this online car-hailing car has been equipped with Jushi equipment. After getting on the car, you will see a small black box and a cylindrical camera in the center of the front windshield. That is the Jushi device.
It is very difficult for the orange vision device hidden on the back of the rearview mirror to go to the front, so that everyone can see its whole picture. In fact, it looks similar to an ordinary driving recorder, but there are two more important parts, one is the lower left corner The internal camera, and the security help button in the lower right corner.
After understanding the whole picture of Jushi equipment, let us see how it works: the main unit is powered by the vehicle’s 12V battery, monitors the vehicle’s ignition/stop status in real time through the MCU, captures the vehicle’s ACC signal status to control the device’s power on and off, and at the same time Combined with the PMIC power management chip and the voltage of the car battery, the power consumption of the whole machine is finely managed. Each peripheral accessory performs data interaction with the main control chip MTK8665 through a dedicated hardware interface, which promotes the stable operation of the entire Jushi system.
The host part mainly includes: SOC, Cam1, Sim card, TF memory card, GPS, IMU, Mic/Speaker, etc.:
SOC: MTK8665 system-level automotive chip, the brain of Jushi equipment, responsible for system operation and AI monitoring;
Cam1: 1080P high-definition camera outside the car, providing the driver with the function of a driving recorder, and inputting the collected road condition information outside the car to the AI-ADAS engine in the SOC, making the camera intelligent, providing collision warning, distance maintenance, and brake reminder and other auxiliary driving functions;
Sim card: responsible for communicating with the Didi background, and interacting with Didi Security Center for audio and video data as needed according to the received instructions and device status;
TF card: complete local audio and video storage, the driver can extract the driving video outside the car in the TF card through the WiFi connection device;
IMU: 6-axis attitude sensor, based on the read data information, judges driving behaviors such as rapid acceleration, rapid deceleration, and sharp turns, optimizes driving behavior, and improves driver experience;
GPS: Beidou/GPS dual-mode positioning, providing positioning performance superior to that of mobile phones, combined with the traffic information outside the vehicle at the same time, providing the ability to analyze traffic big data;
Mic/Speaker: collect audio data in the order, and broadcast warning information on demand to remind drivers and passengers of traffic safety;
Cam2: wide-angle camera in the car, composed of lens, Sensor, ISP, night fill light, photosensitive device and other components. The light sensor can sense the brightness information of the car environment, couple the order logic, and turn on/off the fill light as needed to ensure nighttime In the dark scene, the video recording inside the car is clearly visible.
The in-car camera is an important tool for Jushi’s driver safety. It is mainly responsible for the in-car video during the trip, which is used for judgment and evidence collection. All the content it sees will be encrypted and stored. If there is no compliance and evidence collection requirements, no matter what The Didi platform, car owners, passengers and any third parties cannot view it, and it will be deleted regularly.
Cooperating with the management and control capabilities of online car-hailing, coupled with Jushi's remote voice broadcast function, through technical means, we can ensure that within the order, the internal camera is in a continuous, stable, and high-quality monitoring state. Deter criminals and ensure the safety of drivers and passengers.
In addition, it will also pay attention to the driver's eyes and mouth, capture the driver's blinking, closing eyes, yawning and other states within a certain period of time, use intelligent algorithms to judge whether the driver is tired, and issue a voice reminder to remind the driver to rest in time and adjust state. During the epidemic, Didi's AI team also developed a mask monitoring algorithm based on the Jushi in-vehicle camera to effectively prevent the spread of the new crown epidemic and ensure the safety of drivers and passengers.
Finally, there is the inconspicuous safety help button. In fact, it also has a great effect on Didi drivers. Let me tell you a true story: Last year, Didi driver Master Li was in the process of receiving an order. Because it was dark and he could not see the road conditions clearly, the whole car fell into a pond. At this time, the driver suddenly remembered that we equipped him with a safety help button, and he pressed the button decisively. Our security personnel detected the signal for help at the first time, judged that there was indeed a dangerous situation based on the audio and video content inside and outside the car uploaded by Jushi, and called the police in time to assist the driver to be rescued.
Protecting the safety of drivers and passengers is an important mission of Didi Chuxing, and Jushi equipment is the guardian behind the drivers and passengers. At present, Jushi equipment has become the infrastructure equipment in Didi’s online car-hailing safety field, with nearly one million installations, covering 200+ cities across the country, and daily service orders exceeding 10 million, covering a journey of 120 million kilometers. The Wuxi elevated road collapsed, The meteorite fell in Changchun, during the epidemic period, Dalian's epidemic prevention site was being broadcast live on CCTV...Many phenomenal events were recorded by Orange TV.
While meeting the needs of online car-hailing scenarios, Jushi adheres to the concept of "building a driving data ecology and making travel more intelligent", and uses Didi Chuxing's data accumulation and full-scenario closed-loop foundation as the engine to deeply drive the innovation and release of the Internet of Vehicles industry. Created a complete set of industry-level hardware system, high-level software service system and precise AI algorithm capabilities, providing solutions in multiple fields such as passenger vehicle safety accident prevention, freight fleet management, auto insurance pricing, map update, smart city, etc. , to jointly build Jushi fleet management solutions and Jushi smart traffic big data applications:
Relying on stable and efficient massive data collection capabilities, Jushi has huge imagination space and commercial value in the fields of fleet management, traffic safety, public safety, customized insurance, map update, unmanned driving, and smart transportation.
Value traction, technology drive. I believe Jushi can bring you more surprises!
author of this article
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Joined Didi in November 2017 as a hardware expert engineer, responsible for the research and development of "Jushi" brand vehicle hardware products. He graduated from Beijing University of Posts and Telecommunications in 2013 and worked for Huawei Hisilicon. He has been focusing on the research and development of hardware technology and serving hundreds of millions of users with hardware equipment.
about the team
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Based on Jushi’s intelligent hardware platform, Didi’s in-vehicle equipment business department provides integrated fleet management and service solutions to online car-hailing platforms, covering the entire process of fleet operations, including driver safety, traffic safety, and service judgment/control. As of now, Jushi has covered nearly 50% of the orders on the online car-hailing platform. As the world's largest online car-hailing smart device platform, Jushi is fully supporting the "0188" strategy and escorting the goal of serving more than 100 million orders per day in the next three years. With the rapid development of 5G and artificial intelligence, the Jushi solution will further tap the value of data while better serving the online car-hailing platform, and build a driving data ecology to make travel smarter and cities smarter.
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