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[Guide] In recent years, autonomous driving has rapidly moved from ideal to reality, setting off a new wave of technological changes in the automotive industry. It is understood that in the past seven years, 5839 new autonomous driving technology patents have been added. From the perspective of future development trends, the IHS survey shows that autonomous vehicles will grow at a rate of 63% between 2020 and 2040. The resulting large amount of data will also continue to expand, which places higher demands on car storage and fast computing capabilities.

In recent years, autonomous driving has rapidly moved from ideal to reality, setting off a new wave of technological changes in the automotive industry. It is understood that in the past seven years, 5839 new autonomous driving technology patents have been added. From the perspective of future development trends, the IHS survey shows that autonomous vehicles will grow at a rate of 63% between 2020 and 2040. The resulting large amount of data will also continue to expand, which places higher demands on car storage and fast computing capabilities.

Micron Technology, a leader in the automotive memory and storage market, has pointed out that by 2020, the storage requirements for Internet vehicles may reach 1 trillion bytes. To drive fully automated driving, 300 gigabytes per second (GB/ s) The above storage system bandwidth. For this reason, how to meet the storage needs of the era of big data in intelligent networked vehicles and ensure network security has become the key to industry discussions.

Where does the massive data come from?

On the whole, the storage data of the automobile industry mainly comes from the five aspects of infotainment system, dashboard, ADAS system, communication and power system. With the gradual upgrade of autonomous driving, the rapid growth of the data volume of ADAS system and infotainment system will Give birth to greater development space for car storage.

With the upgrading of consumption and the diversification of demand, the content and digital functions involved in the in-vehicle infotainment system are continuously enlarged. In addition to navigation, it also covers fault detection, vehicle information, body control, mobile office, wireless communication, car-machine interconnection, Based on online entertainment functions and TSP services and other applications, all applications not only bring unprecedented sensory enjoyment and information needs to drivers and passengers, but also bring huge amounts of data. Once data storage problems occur during the application process, it is no less depressing than a mobile phone jam or a computer crash.

The rapid development of driver assistance systems (ADAS) has enabled vehicles to have 360° surround view, automatic parking, emergency braking and many other functions. According to this development trend, the amount of information collected by cameras and radars will be larger and larger, and the accuracy of pictures will be higher and higher. If the system is stuck or data is unstable during the driving process, the safety of the vehicle will be greater Hidden dangers.

In addition, because of the continuous enhancement of automobile intelligence and the increase in the number of sensors in the power system, it is bound to generate massive amounts of telemetry data. The integration of automobile instruments and the intelligence of seat interiors will also continue to increase the amount of data.

From this point of view, the development of automotive storage technology directly affects the upgrade of autonomous vehicles, and autonomous driving has also brought great challenges to it while promoting the upgrading of automotive storage technology and market expansion.

However, the storage of autonomous vehicle information is divided into cloud storage and localized storage. For this reason, in recent years there has been a view that when cloud storage comes, local storage in cars is no longer needed. In this regard, Mr. Doug Seven, the person in charge of the Microsoft Azure Internet of Vehicles platform, said: “As far as autonomous driving is concerned, even with 5G, we cannot upload it to the cloud. We need to introduce artificial intelligence to determine which data is important and which data. You can discard what needs to be uploaded at a convenient time instead of uploading in real time."

Mike Rayfield, Senior Vice President of Micron’s Mobile Products Division, also pointed out, “Connecting to the cloud can reduce local storage, but even with ubiquitous interconnection, local storage is still required. There is a balance between cloud storage and local storage that requires the industry to work together. Research and control."

Smart interconnection makes automobiles a "potential stock" in the storage industry

From the following pictures and materials provided by Micron, we can see that with the rapid development of automotive intelligence and interconnection in recent years, the introduction of new storage solutions to automotive applications has become shorter and shorter. It is understood that it took five years for DDR2 products to go from computer applications to car infotainment systems, while it took less than two years for LPDDR4 to be promoted from smart phones to cars. For this reason, automobiles have become a “corner” that cannot be ignored in the storage industry, and major industry giants have also continued to increase their development efforts in this field.

At the recent MWC Americas 2017, Micron officially released its LPDDR4, which is used in the next-generation driver assistance system ADAS and automotive infotainment systems. The peak bandwidth of this product is four times that of LPDDR2. LPDDR3 Twice the power consumption and lower power consumption. It is worth mentioning that Micron has now begun shipping LPDDR4x to major chip partners. The product runs at a transmission speed of 4266 megabits per second (MT/s), which is the highest speed level allowed by the LPDDR4 specification.

In addition, Micron also announced that it will provide high-bandwidth GDDR6 storage solutions for the automotive market. Graphics memory (GDDR) is a high-performance memory that is currently commonly used in games, graphics, and virtual reality applications. Micron plans to use its advantages in graphics memory to provide the highest bandwidth solution to enable GDDR technology to meet the requirements of level 4-full automation or even higher levels. The technology is expected to be launched around 2018.

Mike Rayfield pointed out that with the rapid development of autonomous driving, LPDDR technology will soon be upgraded to the 5th and 6th generations, and the bandwidth will be expanded from the current 68GB/s to 448GB/s in 5 years.

"I think automobiles are the next big customer group. Micron currently has about 40% of this market, and we will continue to work hard in the future." said Jeff Bader, vice president of Micron's Embedded Products Division. It is understood that Micron has expanded its investment in Taiwan shortly before the exhibition. The investment official revealed that it intends to continue cooperating with existing chip partners to help enter the Internet of Vehicles market from mobile consumer products.

Relevant data show that the market size of car storage in 2017 is about 2.2 billion US dollars. With the heating up of autonomous driving technology, the future market prospects of storage systems are immeasurable.

Car storage challenge-safety

When it comes to network security, friends who have watched "Fast and Furious 8" will probably have lingering fears. Once the driverless car has network vulnerabilities, the security problems presented will be fatal.

At first, people were crazy about autopilot itself, and following a series of car-linked cyber attacks such as the US Fiat Chrysler’s mass recall due to hacking risks, BMW’s ConnectedDrive digital service system was compromised, and cyber security experts passed the Tesla Model. The vulnerability of S opens the car door and drives away, and at the same time it can send a "suicide" command to Model S, etc., alerting major car companies to start to put self-driving network security and information security issues on the agenda, and car storage information is safe and natural Cover it.

Regarding the defensive measures of automotive storage in this regard, Mr. Jeff Bader said in an interview that Micron has now introduced security guidance for memory systems based entirely on Authenta technology, and expanded the hardware-based Authenta™ security solution through guidance. the value of. "In addition, Jeff Bader added: "The company plans to provide Authenta™ software and hardware development kits to all automotive and IoT customers by the end of this year, so that they can begin to evaluate how to integrate Authenta technology-enabled flash memory into its security architecture. In this way, functions such as secure startup, cloud computing-based authentication, identity verification and deployment are realized. In this way, customers can increase the defense depth of their solutions without adding additional hardware components to their designs. "?