On December 22nd, 2021, Huawei Smart Car Solution Ecological Forum was grandly held online, with the theme of "Enjoying Ecology and Creating the Future Together".

In the afternoon’s "Dialogue with Che Yun" topic, three experts from Huawei Smart Che Yun shared the "Troika" that drives the development of intelligent networked vehicles in Huawei’s vehicle networking field-OTA, VHR, and three-power cloud services.

Now Huawei has officially released the full text of the speech. Let’s take a look at it here.

With the rapid development of new energy vehicles, under the trend of intelligence and networking, software-defined vehicles have become the industry consensus, and OTA has become the core power of software-defined vehicles. Huawei released the OTA 3.0 vehicle-level upgrade scheme, which can provide a vehicle-level upgrade experience with zero bricks and good experience.

According to reports, the development of OTA will go through three stages. From the market point of view, most of the new forces ICV have taken the lead in entering the OTA 3.0 stage, and maintained a high iterative speed in ADAS/ADS, vehicle control domain, cockpit domain and power domain.

Three core issues that OTA3.0 needs to pay attention to: vehicle version management and quality care, OTA security and reliability, and user experience.

Three core issues that OTA3.0 needs to pay attention to:

Vehicle version management is a systematic problem, how to ensure the compatibility and consistency of vehicle parts versions. At present, the number of lines of vehicle software code reaches 100 million, and the complexity of multi-component collaboration is high. After-sale vehicles have a variety of parts version combinations, which lead to thousands of vehicles. How to ensure the compatibility and consistency of all parts versions of the whole vehicle, how to ensure the quality of versions and prevent bugs, especially those that affect driving safety, is a huge project. Taking 20 parts combinations as an example, the number of versions produced by changes caused by functions and problems may reach thousands in the life cycle of the whole vehicle. In the era of vehicle intelligent experience, OTA is becoming more and more popular, and efficient version management has become a key challenge. The OTA platform that can provide effective software version management capabilities has more advantages.

Intelligent driving, vehicle control and power domain upgrade have become the norm, and how to ensure the safety and reliability of the whole vehicle under OTA is extremely critical. OTA upgrade will lead to brick-changing, which will touch the red line of users’ experience, and there are endless cases of complaints and even public opinion caused by brick-changing in the industry.

Huawei systematically analyzed the brick change caused by OTA. The control loopholes, unavailability of core components, lack of remote repair and software bugs in the whole vehicle upgrade process became the biggest incentives for brick change. How to predict all faults that may lead to brick upgrading in the design stage is a systematic problem. It is necessary to analyze and simulate the potential faults in all scenarios and formulate attenuation measures to prevent them.

Huawei mobile phones supported OTA many years ago, and systematically analyzed the failure modes of mobile phone OTA failures, which also ensured billions of reliable upgrades. The experience is worth learning. Similar to mobile phone upgrade, it also faces user experience problems such as traffic consumption, upgrade time and operation interaction in OTA process.

Based on this, Huawei proposes OTA as a core service, which requires three capabilities in the OTA3.0 era:

Open up the whole process from R&D to commercialization (including management actions and upgrade execution). Covers full upgrade scenarios, provides flexible scenario combinations, and can be upgraded in any actual scenario.

Huawei’s OTA solution is a vehicle-level remote upgrade service for Huawei HI automotive solutions. Natural adaptation HI solution upgrade can cover 45+components such as intelligent driving, intelligent cockpit, intelligent electric, intelligent network connection and intelligent vehicle control; At the same time, Huawei’s open car-end upgrade service architecture supports the upgrade of car enterprises’ own parts and three-party parts, and can support the brush writing specifications of car enterprises’ standard parts; At the application level, it supports the upgrade capability of ADAS/ADS applications, algorithms, OS and HarmonyOS native applications.

At the same time, Huawei has built a user upgrade experience that pays equal attention to security, performance and interaction:

Based on many years of experience in ICT software management, this paper provides a One-Track vehicle-level version management system, which realizes the single-line evolution of versions in the OTA era and greatly reduces the management efficiency of complex software combinations.

Based on DFEMA system, which is an excellent practice in safety and reliability design, 2000+faults are identified and analyzed, and fault attenuation measures are taken comprehensively, so as to achieve the goal of safety and reliability of car-gauge OTA and zero brick change.

Relying on Huawei Cloud 2000+ CDN, dynamic scheduling and source station diversion can realize safe and reliable high-speed download capability. Support parallel differential installation and multi-domain parallel upgrade capability, and shorten the vehicle-level upgrade to less than 25 minutes.

Relying on many years of consumer business experience, Huawei provides multi-terminal friendly cooperative interactive operation interfaces for cars and mobile phones, which is convenient for users to upgrade in different scenarios.

In the era of smart cars, various car companies have continuously developed software ecology, constructed and optimized software management processes, and have professional opinions and thoughts on vehicle upgrade reliability, and also accumulated rich experience.

Huawei provides an OTA service platform, and hopes to continue to explore OTA software ecology, management process, reliability, operation and maintenance with various car companies and ecological partners to build a competitive OTA service.

The rapid development of intelligent networked cars has brought two changes to the connection and experience between people and cars;

In the past, when a car broke down or was in an abnormal state, consumers had to go to the maintenance center for inspection. Now, with this large amount of data, the OEM can give early warning and take the initiative to care for customers in real time, even when the fault is still in its infancy. It is also possible to build a plan for some common problems in advance, and make a more accurate ratio model prediction for spare parts, which greatly improves the efficiency of vehicle operation and maintenance.

By mining the value of data, we can provide better services for users and bring more benefits to car companies.

At the same time, with the development of vehicle intelligence, the digital proportion of each body part is constantly improving: the magnitude of vehicle software code is constantly improving, and now the amount of software code is 10 times that of ten years ago, and the amount of software code in the future will be further improved to 300-500 million lines. Every system and component of the vehicle reports various status signals, logs and alarms every day. At present, the data volume of a single vehicle is on the order of 150-200M per day, and it will be further improved with the increase of sampling frequency and the increase of component complexity in the future.

IT House learned that Huawei put forward the concept of VHR with reference to the experience of ICT industry.

VHR stands for Vehicle History Record, which is a data-driven concept based on the whole life cycle. Its purpose is to realize the visibility, maintainability, user care and efficient operation of vehicles on the basis of a large amount of data. These works will greatly enhance the car owners’ experience and user stickiness in the future, and also bring important values and benefits to car companies.

VHR covers many links, such as data collection, data management, data analysis, vehicle state visualization, vehicle fault diagnosis, trend analysis, prediction, improvement, etc. It is a closed-loop system from vehicle arrival to vehicle departure.

Four common application directions:

Huawei said that in order to improve the efficiency and timeliness of detection, it is very important to build a fault detection method based on federated self-learning. At present, many ECU controllers and devices are added to smart cars, and the amount of data is very large. If the cloud-based model is monitored only by the cloud, there will be problems of untimely monitoring in some scenarios, such as poor network, high delay or even no network. Therefore, end-cloud collaboration is a very important choice.

Cloud-side heterogeneous computing resources support model training calculation, fully integrate the capabilities of NPU, GPU and CPU, realize the application scheduling of heterogeneous computing resources integration at the bottom, and improve the efficiency of model training and execution.

Sensitive personal data end-side training (privacy protection), multi-user feature parameter cloud sharing support joint learning (model accuracy), and increase noise data through differential privacy to improve security.

Using high computing power components such as VDC, CDC and MDC on the end side, the anomaly detection model is gathered on the end side for anomaly detection, rapid reasoning, combined with cloud big data model and data supplement provided by suppliers, fault labels are improved, and the accuracy and real-time performance of problem identification are improved.

Huawei also said that the data-based VHR system needs to be built by the whole industry, including car-side capabilities, cloud capabilities, upper-level scenarios and so on.

Driven by national policies and other factors, today’s car electrification is unstoppable. From 2021 to July, the national sales of new energy vehicles exceeded 1.229 million, up by 210.2% year-on-year. New energy vehicles have developed rapidly, but at present, the spontaneous combustion of new energy vehicles has not been effectively controlled. In 2020, a total of 124 accidents were reported. By September 2021, there were 224 car burning accidents exposed by the media, and consumers began to shift from mileage anxiety to safety concerns.

There are many and complicated reasons for thermal runaway accidents of electric vehicles: local heat generation caused by internal short circuit caused by battery cell process defects, electrical abuse, thermal abuse and mechanical abuse, and thermal stability reduction caused by a large amount of lithium precipitation caused by overcharge, low-temperature charging and fast charging, all of which may lead to thermal runaway. Among them, the safety boundary of thermal runaway caused by internal short circuit is dynamic, and whether internal short circuit leads to thermal runaway needs more judging factors, such as short circuit type, short circuit internal resistance, SOC and so on. Therefore, based on electrochemical mechanism and combined with machine learning technology, Huawei has built a more complex relationship model to realize accurate early warning of power battery safety of new energy vehicles.

Based on Huawei VHR data service base and battery pack simulation system, eight applications for power batteries are constructed, including power battery thermal runaway warning, battery fault detection, battery health SOH evaluation, battery remaining life RUL prediction and other applications, to escort new energy vehicles.

In the aspect of battery safety warning, the recall rate of power battery fault detection and thermal runaway warning can reach more than 80%, and the false alarm rate is guaranteed to be in a low range. In the aspect of battery health assessment (SOH), Huawei’s SOH prediction model based on cloud can achieve the life Cycle estimation error of less than 3% and the remaining cycle prediction error of less than 10%, and can achieve 100% traceability of battery problems based on cloud battery life cycle data.

Huawei said that it is necessary to construct massive sample data through the power battery hardware-in-the-loop simulation system and analyze the real vehicle sample data to effectively overcome the problem of small sample data. At present, Huawei has built fault sample data covering ternary lithium batteries and lithium iron phosphate batteries, and built an engineering library of thermal runaway characteristics of 15+ power batteries.

In addition, Huawei also adopted the domain adaptive algorithm to migrate the algorithm model. When the algorithm model is migrated from the simulation environment to the real vehicle, or in different material systems and formulas, the accuracy of the algorithm remains stable.

Special feature of 1905 film network Tiger leaps and dragons are born with purple gas, and the weather is good and the weather is good.On February 1st, 2022, the first day of the Year of the Tiger, the film market in China got off to a good start. Many city cinemas have a constant audience from morning till night, and it is hard to get a ticket. Watching movies has become a new year custom.

According to the statistics of the National Film Office, the single-day box office on February 1st (the first day of New Year’s Day) exceeded 1.4 billion yuan, ranking the third in the single-day box office of China film history. The top five box offices of new films all exceeded 100 million, from high to low, they were 635 million, 226 million, 213 million, 181 million and 105 million respectively.

On the first day of the Spring Festival, "Watergate Bridge on Changjin Lake" grossed 635 million yuan, breaking 15 movie history records, such as war, history, and drama films. Grand war scenes, fine special effects pictures and deep feelings for home and country make this film the first choice for most audiences to watch movies during the Spring Festival.

According to the current box office trend and audience’s word of mouth, Watergate Bridge of Changjin Lake is not only expected to break the "curse" of the Spring Festival file since 2017 that "the box office leader can’t become the final box office champion", but also more likely to surpass its predecessor The Battle at Lake Changjin and create a new single box office record in the history of China cinema.

Four Seas, This Killer is Not Too Cold and Quiet, and Miracle Stupid Child are three single-day box offices on New Year’s Day, followed closely.

Among them, the racing theme work "Four Seas" is the third Chinese New Year movie directed after that. As the only pure comedy movie in the schedule, The Killer is not too cold and quiet is obviously different from other film types, and the audience diversion pressure is relatively limited. Miracle Stupid Child is the second realistic feature film after the director. Witnessing the third cooperation, Douban scored 7.7, ranking first among the eight new films. Whether the film can replicate the box office trend last year is worth looking forward to.

The competition for the Spring Festival stalls is fierce, which has laid the groundwork from the pre-sale stage. Before the official opening of the Spring Festival in 2022, the competition for pre-sale qualifying of eight new films was fierce. Four films, Watergate Bridge of Changjin Lake, Four Seas, This Killer is Not Too Cold and Quiet, and Miracle Stupid Child, were pre-sold over 100 million, making them the most pre-sale films in China film history. Among them, the first day pre-sale of Watergate Bridge of Changjin Lake was as high as 328 million yuan, which led the major new films and ranked second in the pre-sale list of the premiere day of China film history.

In terms of animated films, "Bears Come Back to Earth" closed at 105 million yuan on its first day. It is worth looking forward to whether the final box office of the film can create a new high in the series of "Bears". , and provide more choices for parent-child file viewing.

The box office made a good start on the first day of the Spring Festival, creating conditions for the whole box office and the box office in February to reach a new high.

In terms of cinema box office, the number of cinemas in Beijing reached 6 in the TOP10 of the national cinema box office list on New Year’s Day. In the data of the same period in 2021, only one Beijing cinema was on the list. The difference between the two may explain from the side that in order to better support the epidemic prevention and control, more and more residents in first-and second-tier cities have chosen to celebrate the New Year on the spot. Watching movies has become one of the best entertainment methods for local residents during the Spring Festival.

TOP10 National Cinema Box Office Rankings on New Year’s Day

According to statistics, from 2011 to 2022 (except 2020), the single-day box office of China mainland film market repeatedly broke new highs, from the initial 54 million to the highest 1.692 billion. Behind the fact that the box office broke through new highs many times on the first day of the New Year’s Day, it is not only the maturity of the Spring Festival file, but also a microcosm of the maturity of the mainland film market in China and the rapid development of the quality and quantity of domestic films.

As a cultural carrier, movies have the important functions of bearing social morality and actively promoting cultural construction and the prosperity and development of literature and art. At the same time, movies are the embodiment of cultural soft power. In recent years, the constantly emerging high-quality domestic films, such as "Watergate Bridge of Changjin Lake", have attracted widespread attention in overseas markets.

The transformation from a big movie country to a powerful movie country is on the way.

They are "post-90s" younger brothers.

He is also an anti-epidemic fighter wearing a "war shirt"

They are "post-90s" cute girls.

It is also angels in white who sticks to the front line of the war "epidemic"

They bravely retrogressed to the front line of the epidemic

This is exactly what youth looks like

Among the medical staff supporting Hubei

"After 90" and "After 00"

There are more than 12,000 people in total.

Almost a third of the whole team.

They proved by action.

Your own responsibility and value

one

A name that can finally be said

Night shift 5 hours

Her face was stained with blood by a mask.

When interviewed in front of the camera

She said: Don’t broadcast the name, mom will be worried when she knows it.

Now the name can finally be said.

Her name is Luo, and she is 24 years old!

Fighting the "epidemic" for more than 50 days

She finally said that to her mother.

We won.

2

We will not retreat until the epidemic is over.

Liang Shun, 21, is from Jinyintan Hospital in Wuhan.

The youngest ICU nurse

He once joked that he was "not as good as a rookie"

But in the New Year’s Eve, regardless of family opposition.

Go back to the hospital to fight the "epidemic"

Liang Shun said

He will fight the epidemic until the end.

Will be the last batch.

The medical staff who do the finishing work.

"We will not retreat until the epidemic is over."

three

He is like a brother.

If it weren’t for Zhang Yizhen’s heavy protective clothing

People really forget.

This is a battle against the epidemic.

In Wuhan Children’s Hospital

Unlike where will you go in the ICU ward.

The fighting here looks so happy.

He is like a brother.

Into the children’s world

four

It is impossible to say that you are not afraid.

Climb to the top of a 6-meter-high 30-ton tank.

Hoist the motor pump with traction rope.

"Post-90s" Firefighters in Hubei Province

Continuous transfer of 430 tons of medical wastewater

"It is impossible to say that you are not afraid.

Everyone will be a little scared more or less,

But the epidemic is the order. "

five

Walk through a "second ring road" every day

during the epidemic

In Nanli, Donghua City, Dongcheng District, Beijing

Young social workers born after 1990s.

Pulling this car to serve the isolated residents at home.

Distance traveled every day

Equivalent to a second ring.

People will not forget after the epidemic is over.

Volunteers are pulling the car.

Walked through the ditch

six

Mask is a line of defense for life.

Wu Haiwan is a post-90s generation.

He is also the director of a mask factory in Changsha.

In the face of an emergency epidemic

December 27

Eight production lines of mask factory resumed work in an all-round way

Fight the "epidemic" for 100 days

30 million masks were produced.

Donate about 700 thousand

"A mask is a line of defense for life.

Even if you can’t go to the front line,

We should also keep our positions. "

seven

Delayed marriage certificate for 64 days.

Hu Xiaohan is a nurse in Wuxi Second Hospital.

After the outbreak

She went to her hometown of Hubei to fight the epidemic.

Delayed the plan to get a license with her boyfriend.

After more than two months.

The two finally came to the Civil Affairs Bureau.

Getting a marriage certificate delayed for 64 days

A sudden epidemic

It seems to be a moment when "post-90s" and "post-00s" grow up.

A child who was once guarded

In the face of the epidemic, I have the shoulder to shoulder the heavy burden.

Grow against the wind

The more you sharpen, the stronger you become.

Source: Xinhuanet Sike is compiled from CCTV, Zhongxin. com, Yangguang Military, China Daily, Beijing Daily, etc.

　　According to the latest real-time statistics of WHO, as of 16: 06 Central European Summer Time on August 18th (22: 06 Beijing time on August 18th), there were 208,470,375 confirmed cases and 4,377,979 deaths in COVID-19. On the 18th, there were 542,708 new confirmed cases and 6,739 new deaths in COVID-19.

　　WHO: Vaccine can effectively prevent severe illness and death caused by Delta mutant.

　　On the 18th, local time, WHO held a regular press conference in COVID-19. Sumiya Swaminatan, chief scientist of WHO, said that Delta mutant was highly contagious, and there had been cases of virus infection after vaccination. However, the vaccine can effectively prevent severe illness and death caused by Delta mutant.

　　Sumiya Swaminathan also stressed that wearing a mask is also very important. Recent research models show that in countries with high vaccination rates, everyone wearing a mask will reduce the community spread of the virus more quickly.

　　The number of cases has soared, and the medical system in Alabama in the United States has almost collapsed

　　On August 17th, local time, Don Williamson, president of Alabama Hospital Association, said that with the recent surge of infection cases in COVID-19, the state medical system has been overloaded. As of August 17th, local time, the number of critically ill patients (1568) who need beds has exceeded the total number of beds in the intensive care unit (1557).

　　The "hardest hit" of the Delta strain in Rio de Janeiro, Brazil

　　As of 19: 00 local time on August 17th, according to the data released by the Brazilian Ministry of Health, there were 37,613 newly confirmed cases of COVID-19 in Brazil, with a total of 20,416,183 confirmed cases.

　　The occupancy rate of intensive care beds in seven cities in Rio de Janeiro has reached 100%, the occupancy rate of intensive care beds in Rio de Janeiro, the capital, has reached 95%, and the occupancy rate of intensive care beds in the whole state has reached 70%, which is also the highest figure since June 13. Recently, Rio State has been the "hardest hit" of Delta virus strain of COVID-19, and the number of patients infected with this variant has exceeded 60% of the total number of infected people. Two weeks ago, the figures for Rio and Rio de Janeiro were 45% and 26% respectively.

　　The Vietnamese capital Hanoi will conduct the second round of large-scale Covid-19 testing.

　　According to the news of the Ministry of Health of Vietnam on August 18th, starting from August 21st, the health department of Hanoi, the capital of Vietnam, will test 800,000 Covid-19 samples from 13 groups of people in high-risk areas of the city. This is the second large-scale Covid-19 test in Hanoi recently.

　　The 13 high-risk groups that need to be tested include: take-away riders, sellers in traditional markets and small markets, salespeople in supermarkets and trade centers, grocery store practitioners, gas station workers, industrial parks and long-distance bus drivers, security guards in apartment buildings, industrial parks, institutions and non-governmental organizations, construction workers, pharmacy salespeople, warehouse workers, quarantine station attendants, anti-epidemic volunteers and sanitation workers.

　　Kenya’s national curfew was extended for another 60 days.

　　On August 18th, local time, the Presidential Palace of Kenya released a message saying that the recent report of the Kenyan Ministry of Health showed that the number of people infected with Covid-19 increased in many counties due to the failure of people to strictly abide by various epidemic prevention measures and the strong spreading ability of Delta mutant strains, and the positive rate of Covid-19 test in 18 counties exceeded 20%. Last week, the positive rate in 8 counties exceeded 30%.

　　In order to curb the further development of the epidemic, Kenyan President uhuru kenyatta announced that the national curfew from 20: 00 every day to 4: 00 the next day will be extended for another 60 days; Suspension of public meetings, including political meetings and election campaigns, for 60 days; Wedding funerals, traditional celebrations, etc. need to be strictly controlled within 100 people.

　　Up to now, the total number of confirmed cases in COVID-19 has reached 224,400.

　　North Macedonia tightened its entry policy on September 1.

　　According to a report by the North Macedonian News Agency on August 18th, local time, the government held a meeting on the evening of 17th to adopt the advice of epidemiologists and tighten the entry policy in view of the recent rebound of epidemic situation and the increase of newly confirmed cases and deaths. That is, starting from September 1st, both foreign and domestic citizens are required to have vaccination certificates or negative reports of nucleic acid detection within 72 hours when entering North Macedonia, and patients infected with Covid-19 are required to have rehabilitation certificates within 45 days.

　　According to the data of the Ministry of Health of North Macedonia on 17th, there were 999 new confirmed cases of COVID-19 and 14 new deaths in that country.

　　Singapore Jetstar Asia Airlines stipulates that all employees must be vaccinated with COVID-19 vaccine.

　　Singapore’s low-cost airline Jetstar Asia Airlines stipulated on the 18th that all employees must complete COVID-19 vaccination by October 1st at the latest, becoming the first airline in Singapore to set this requirement.

　　Jetstar Asia Airlines said that vaccination can reduce the risk of contracting Covid-19 and protect employees and people around them.