The gold robbery has not yet come to an end, and the Tianyi unmanned bus accident has once again detonated the hot spot of public opinion.

The injured person who was taken to the hospital did not survive in the end, and the accident left two people dead.

Subsequently, unmanned buses and two videos from different angles captured by Skynet 20 meters away were posted on the Internet.

According to the screen, an electric car quickly plugged into the front from the right side of the unmanned bus that had just started at a speed of more than 40 yards, and a taxi in front of it drove to the special lane of the unmanned bus;

The driver of the battery car, who was blocked from the road, did not take his life seriously at all, and drove towards the left guardrail by sticking to the front of the bus, looking like he planned to continue to rush forward against the guardrail.

It stands to reason that at this time, the unmanned bus should make emergency braking.

However, it happened that the network was disconnected at this time, and the huge background algorithm program did not issue instructions in time, resulting in the unmanned bus continuing to move forward, and the driver and passengers of the electric vehicle were involved under the car in the next second.

There was a lot of scolding on the Internet, condemning the drivers of electric vehicles for not taking such a wide non-motorized lane, but they had to run to the bus lane to fight for their lives, harming others and themselves.

But it doesn't help to say anything more now.

......

Electric car drivers have paid the price of their lives, and the safety of unmanned buses has become the focus of public discussion, and all kinds of ghosts, snakes and gods have jumped out to express their opinions.

A big V named "Writing Book" commented on Weibo, "I have long said that this kind of unmanned driving technology that has not been tested for a long time will inevitably lead to tragedy."

It turns out I was right.

If you look at Tesla and Uber in the United States, which product will not be launched to the market after thousands of tests to ensure the safety of passengers and passers-by to the greatest extent?

And what about Tianyi? Relying on several intensive measurements and the published data that I don't know whether it is true or false, it is simply chilling to go on the road with such a swagger.

Please wait and see, this accident is not the end, but a BUG. When this bug is fixed, it is unknown who will be the subject of the next bug. ”

The notebook is a well-known "cent", every beauty must be licked, and every time it is black.

Netizens once made a list: [Three surnames are Chicken Soup Li Kaifu, when the stands as a cannon, Brain Cancer Immortal Blood Barbarian, Licking Chrysanthemum Writing Book for Beauty, Brainless Donkey Yuan Wants to Come, Wig Selling Family Poison Guy Rong, Rumor Stick Rabid Dog Ding Laifeng]

This cent-to-cent big V who "licks chrysanthemums for beauty" once openly brushed the martyrs, saying that [because *** was lying motionless in the fire, in the end the diners refused to pay for the half-cooked noodles, and they all said that the barbecue was better], and was sued by the *** family in court.

Now, as soon as this malicious comment article came out, it was immediately forwarded in large numbers, and many of them were active in it.

This was followed by rumors posted on the Internet that Tianyi's advanced driver assistance system had a security vulnerability.

The speed of the spread of the news was very fast, and the article on the evening of the 3rd, by the 4th, the portal had already begun to reprint it.

Tianyi's crisis public relations team issued an announcement at the first time: [Tianyi's achievements today are created by strength, not by writing a few nonsense articles to attract people's attention like some unscrupulous public knowledge big Vs.

As for those who maliciously spread rumors, they are either stupid or bad, and such people will never be the mainstream of this society.

Because they don't have brains, people with brains are wondering where the next scientific and technological outlet will be? Who will lead the trend of the world's scientific and technological development?

Finally, we want to bravely admit that the Tianyi unmanned bus has not been perfect, and we still have a long way to go in the face of cruel results and objective facts.

The years are long, wordless gratitude, I only hope that in the future, Tianyi can bring you more surprises and touches - produced by Tianyi, it must be a high-quality product!]

......

As soon as Tianyi's public relations article came out, the cent big V who came out to find a sense of existence was suddenly sprayed into a sieve.

"Stinky and shameless, get out of China. ”

"Notebook, your American dad told you to go back and receive the reward. ”

"I'm **you**, I should have shot you against the wall in the first place. ”

“......”

Tianyi's fan combat effectiveness is incomparable, and the administrator's deletion and ban are far from keeping up with the speed of comments, and they are directly submerged in the end.

For fear of causing a bigger impact, the notebook closed the comment section at 11 a.m.

On the other hand, Xinlang also issued a statement in a timely manner, "Due to the user's notebook, the publication of unconfirmed remarks has caused a bad social impact, so the user's account is permanently closed." ”

However, the rumors still brought sequelae.

First of all, 5 of the unmanned buses that were tested in 6 cities were stopped, and only Jinling resisted the pressure of public opinion.

In addition, 20,000 sets of advanced driver assistance systems that are being negotiated with Suzuki and Hyundai have been forced to be suspended, and the other party needs Tianyi to come up with more proof of system safety.

Shen Xin, who was negotiating in Hanguo, called Han Yi and burst into foul language halfway.

It took a whole month for the business negotiation team to pry open the mouth of the modern era, but it was disrupted by a few well-known cents.

Han Yi was also annoyed.

It doesn't matter if the hostile forces fanned the wind and lit the ghost fire, those stinky and shameless "cents" actually followed the coaxing, and some "Jingri" jumped up and down, actually saying that Tianyi's autopilot technology was plagiarized from Japan.

"These bed bugs, which are too much to accomplish and more than fail, are really good for nothing but making feces. ”

After scolding, Han Yi said, "That's it, you guys come back first." ”

The damage is irreparable, and in this case, the only way to do this is to accelerate the energy revolution and promote the market share of the global eye, so as to prepare for the next step of switching and roaming between different satellite systems.

......

In a blink of an eye, the national holiday was over, Yu Jingyao and Shi Ying went to Thailand to shoot MV album tidbits, while Han Yi officially invested in the research and development of 6G.

Only three satellites are needed to achieve a global communication network without dead ends, but these satellites are different from the previous near-Earth satellites, which are geostationary satellites.

The geostationary satellite is located at an altitude of 36,000 kilometers above the equator, so that the direction of the satellite's rotation is consistent with the direction of the earth's rotation, and the satellite's rotation period is exactly equal to the earth's rotation period (24 hours), so that the satellite always maintains a synchronous operation state.

Therefore, geostationary satellites are also called geostationary satellites.

The maximum coverage of the geostationary satellite antenna beam can reach more than one-third of the total area of the Earth's surface.

Therefore, in geostationary orbit, as long as three communication satellites are placed at equal intervals, their antenna beams can basically cover the entire earth (except for the polar regions), and achieve global communication.

The International Communications Satellite System (ICTSAT) currently in use was established in accordance with the above-mentioned principles. The three satellites are located over the Atlantic, Pacific and Indian Oceans.

But there are problems.

Because of the altitude, when the satellite phone is sent from the earth station to the geostationary satellite, and from the geostationary satellite back to the receiving earth station, it needs to travel nearly 80,000 kilometers.

When making a phone call, a question and answer of radio waves takes nearly 160,000 kilometers to make a round trip, and it takes 0.6 seconds to transmit.

How to solve the problem of delay is the first problem to consider?

Second, there are solar transit interruptions (interference from the sun's strong electromagnetic radiation) and rain decay (attenuation caused by radio waves entering the rain layer).

Communication network satellites are used as aircraft and unmanned preparations, such as time delay, sun transit, and rain decline, which are all deadly threats.

After asking Surier, she gave two suggestions, "First, increase the number of satellites while reducing the orbital altitude;

This does not synchronize, but it solves the latency problem, and the only downside is that it adds a lot of money. In tens of millions of dollars. ”

"This can be!" Han Yi nodded, "What else?"

"Second, the use of two sets of communication systems,

One uses radio waves and the other uses γ-ray communication.

Radio communication is used as a regular practice, while γ rays, which are equivalent to the speed of light, are used as a backup system. In this way, the problems of sun transit and rain decay can be perfectly solved.

The only problem is that the strong γ rays are very harmful to the health of the staff of the ground receiving station. ”