IOT calculation
BCC mining and bitcoin mining are the same, the only difference is the dynamic mining strategy
when BCC was just born, it continued the mining difficulty of BTC. The miners lost money for mining out of belief. At the beginning of bitcoin's birth, they even proced a block within 12 hours. In order to ensure the stable development of BCC network, BCC adopted the strategy of dynamic adjustment of mining difficulty, which can ensure that the block speed of BCC can well adapt to the decline of computing power
BTC is a difficulty adjustment for every 2016 blocks, while BCC adds a rule of "if the MTP interval of the past six blocks is greater than 12 hours, the next difficulty will be reced by 20%". At present, the mining difficulty of BCC has been reced a lot, which is about 13% of that of BTC. BCC's current block speed is close to an average of 10 minutes out of a block
mining principle of BCC:
the previous life of BCC was bitcoin. Before the bifurcation, the data stored in the blockchain and the running software were compatible with all bitcoin nodes. After the moment of bifurcation, it began to execute new code and package large blocks, thus forming a hard bifurcation on the chain. At present, BCC is still a futures, which will be officially split into a new currency on August 1
security problems faced by bitcoin:
the first security threat of users comes from the user activated hard fork or uahf - all BTC holders who control their private key get an equal number of BCCs at the time of fork
that's the problem: there are many domestic trading platforms designed for bitcoin, but it should be noted that many investors use third-party transactions or unsupported software wallets, but the investors themselves do not control their private keys, so it is the third-party trading platform that finally receives the new currency. Some platforms will inform customers, while others will not
many investors have transferred their assets to the supported bitcoin wallet a few hours before the hard fork, while investors without independent wallets have to wait
there are many opportunities for phishing attacks or other malicious attacks, especially considering that most successful malicious attacks against bitcoin are focused on controlling private key or hacker exchange, rather than directly attacking currency. About the security of bitcoin, you can also add your own wechat seciot to communicate
BCC is very similar to BTC in technology, adding greater blocking and transaction replay protection, and the latter is in a new form of signature. Bitcoin cash transactions use a new sight_ Fork ID, which prevents bitcoin cash transactions from being replayed on bitcoin blocks
the new hash signature also brings additional benefits, such as the input value signature improves the security of hardware wallet and eliminates the second hash problem. In short, it is theoretically safer than BTC, and its purpose is to start and use faster and more convenient
However, BCC does face a major threat, that is, most attacks, that is, the security risk of a single entity acquiring more than 51% of the network processing power. At the same time, the common enemy shared by the two blockchains is interrupt attack. Most attackers use network interrupt to split the network to improve the probability of successat the same time, partition network and network delay attack are threats. According to the latest research paper, for the so-called distributed network, it is easier than assumed, and 20% of bitcoin nodes are hosted in less than 100 IP prefixes
1. Intelligent security system
(security access control system supports the combination of door lock, door magnet, human infrared sensor, smoke alarm, camera and other security equipment to meet the first demand of family safety)
2. Intelligent lighting system
(except for local touch meal, it can be controlled remotely through app; Combined with RGB light with DIY (any scene)
3. Intelligent audio-visual system
(remote control of all household appliances, real-time view of the current switch status of household appliances, and can set the linkage between household appliances)
4. Intelligent home appliance control system
(brush your teeth while browsing the weather, clothing suggestions and news. At the same time, play music, turn on the toaster in the kitchen and the water dispenser in the living room)
5. Intelligent door lock system
(fingerprint, inctive ID card, anti leakage password, temporary mobile phone verification code and emergency hidden key jack)
6. Intelligent door and window system
(adjust the curtain opening according to the light intensity linkage, and open the window ventilation according to the air quality linkage, so as to create a healthy and comfortable living environment)
7. Intelligent sleep system
(monitoring expiratory frequency and heartbeat, timely alarming in case of abnormality, so as to ensure the health of users. And in the next day to submit a complete and detailed sleep report, so that customers understand the sleep quality, help to improve sleep quality)
above, if you are satisfied, please take it< br />
aiot router ax3600 is officially upgraded with 160MHz bandwidth + overclocking, which has stronger performance compared with the previous generation. Overclocking can make the router have stronger coverage capacity, and multiple devices can access the Internet with low latency and no jamming the new overclocking function of aiot router ax3600 enables users to select different frequency bands in WiFi settings, including 20 MHz, 34 MHz, 80 MHz and 160 MHz<
the aiot router ax3600 has a lot smart antenna in its external antenna design, which enables the device to automatically search Xiaomi's smart router. When connecting to the network, it does not need to manually enter the password of the account the accelerator plug-in in the device is Netease UU, which can speed up the network when playing overseas games, so there will be no login timeout or delay when playing overseas games
With 5g coming, the VR / AR concept seems to be warming up. More and more people pay attention to 5g + VR / AR in investment, consulting, market analysis and other fields. However, many practitioners believe that 5g + VR / AR is purely conceptual hype, and that there is no relationship between the two. They even talk about 5g and kick the crowd
Only when the demand for the accuracy of 3D model is very high and the demand for real-time loading of 3D model is very strong, 5g has its value. At present, we can see such a scene as VR / AR telepresence (also known as VR / AR holoportion), that is, after 3D reconstruction or volumetric capture of human body, remote VR / AR communication is similar to face-to-face communication. But such technology is still in the laboratory stage, far from the consumer market
In addition, because ar glasses are not suitable for viewing panoramic video, 5g bandwidth is useless
"Under any circumstances, Huawei will adhere to open cooperation and will not move towards closed and narrow autonomy. We hope to cooperate with our instry chain partners for a win-win situation. " Liang Hua, chairman of Huawei, is still listening. The biggest developer conference in Huawei's history is coming
from August 9 to 11, Huawei will hold the 2019 Huawei developer conference in Songshan Lake, Dongguan. The Huawei emui10 system and the "glory smart screen" equipped with many black technologies such as Hisense Honghu 818 smart chip will be officially released at this conference. In addition, the Hongmeng operating system, which has been developed by Huawei for seven years and is one of the trumps of the spare tire plan, is expected to make its debut at the conference
for such an unprecedented developer event, Huawei's small partners of listed companies have prepared "tickets". At that time, the reporters who will attend the meeting will sort out the main highlights of the event and Huawei A-share partners who are the most popular
In terms of power, new Baojun rc-6 is equipped with 1.5T turbocharged engine + 6-gear MT manual transmission and 1.5T turbocharged engine + simulated 8-gear CVT continuously variable transmission for consumers to choose from. The maximum horsepower is 147 HP, the maximum power is 108 kW, and the maximum torque is 250 nm; Switching between two driving modes is provided. The comprehensive fuel consumption is only 6.7l/100km (MT model) and 7.3l/100km (CVT model), and the emission of the whole system meets the national VI B standard; It is worth mentioning that the CVT continuously variable transmission equipped with the new Baojun rc-6 makes the shift more rapid and has no sense of frustration. With the front McPherson type independent suspension and the rear torsion beam type non independent suspension, it brings a more stable and quiet driving experience
Xiaobian has something to say
in the future, the interconnection of everything is a major trend, and cars will also be deeply integrated with other intelligent devices. After carrying Huawei hicar intelligent interconnection procts, xinbaojun can completely connect with as many as 130 million Huawei intelligent terminals and intelligent devices, realize zero level fit interconnection, and extend the application and service of mobile phones to cars, making cars and mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, etc The realization of full interconnection between other IOT and other hardware devices has created a new era of locomotive interconnection, which further shows that the advent of 5g era has pushed automobile intelligence to a new height. The joint efforts of xinbaojun and Huawei have led the future direction of automobile instry
this article comes from the author of car home, which does not represent the standpoint of car home
the birth of PLC is a far-reaching Instrial Development node. In 1969, the world's first PLC: Modicon 084, opened the PLC era of instrial control. This event is so far-reaching that in the evolution history of German instry 4.0, it is regarded as the beginning of the third instrial revolution. PLC is a perfect combination of software programming, chip technology and automation technology. In the automation world, no single invention can have such an impact on the manufacturing instry
it has completely changed the process of mechanical and electrical automation
in terms of the connection and control of things, PLC can be regarded as an epoch-making source. When you think about it, this is also the beginning of the Internet of things. PLC can be regarded as the earliest and most successful 3T fusion
then there is a series of intertwined development in the fields of automation, it and CT. With the instrial Internet proposed by GE, 2012 can be regarded as the first year of instrial Internet. The legend of 3T fusion will be rewritten again. It can be said that the instrial Internet is naturally a result of interweaving. It is unthinkable to miss any link of development
the events listed in the figure above are not only technological breakthroughs, but also enlightening ideas and behaviors of enterprises (such as mergers and acquisitions). This also shows that the instrial Internet can not be understood from the perspective of technology alone. On the contrary, if we want to fully implement the value of the instrial Internet, it can not be realized by simply using technology upgrading
the 3T integration of CT, it and OT has finally achieved a generation of pride: Instrial Internet. Whether it is to help enterprises optimize operation, track and analyze equipment, or to complete predictive maintenance, as well as to improve real-time decision-making of enterprises, a large number of equipment connected has a real significance, instrial data began to shine, and instrial Internet finally achieved results
the revolution of one network to the end
2017 is a year full of new ideas for the traditional automation market. With the emergence of digital technology, electrification and automation have become a thing of the past. Automation is closely embracing software and moving towards a digital world. While the integration of it and OT has attracted much attention, there is a landmark event: in 2017, the market share of instrial Ethernet broke through Fieldbus for the first time in the history of automation, and became the most important factory level communication system
the faster development happened earlier in 2016. According to the instrial network market share report released by HMS in February 2017, the growth rate of instrial Ethernet is faster than in previous years, with a growth rate of 22%. Instrial Ethernet now accounts for 46% of the global market, compared with 38% last year. In the specific communication, Ethernet / IP and PROFINET share the largest. At the same time, the field bus is greatly reced from 58% to 48%
according to the data in 2018, instrial Ethernet surpassed Fieldbus for the first time, accounting for 52% of the newly installed nodes (46% last year), while fieldbus accounted for 42% (48% last year). Instrial Wireless has made little progress
for many years, the automation market has been legend of "one network to the end revolution", that is, the top end, highly mature commercial Ethernet system is directly connected to the bottom of the plant equipment. With instrial Ethernet becoming the most important instrial communication system, the long-awaited revolution has finally made a new breakthrough in the era of instrial Internet
the Internet of people, the Internet of things and the non internet of things
as far as the boundary of the Internet of things is concerned, it can be divided into three categories: the Internet of people, the Internet of things and the non internet of things. The Internet of people, that is, the consumer Internet, all kinds of devices connected to the Internet: from PC to mobile phone
the Internet of things is composed of a variety of ubiquitous intelligent terminals with perception and communication, but these terminals do not interact with people directly. They can sense some parameters and then process or analyze them. In the instrial field, this process starts from RFID trying to establish the connection between objects, to machine communication M2M, to IOT. All kinds of relationships between objects, from identification, communication to interaction, are constantly being tried
there are also a large number of "dark devices", which are connected devices without IP address (such as RFID, one-dimensional code). They have existed for a long time, which originally did not belong to the Internet of things. From the boundary of "Internet of things", it can be called "not Internet of things niot"
it is meaningful to replace or activate these devices to bring these "non internet of things" into a bright world, which has become an important task of the Internet of things<
Instrial Internet is in a mess
with the instrial Internet instry Internet proposed by GE and the rapid rise of instry 4.0, intelligent manufacturing has caused extensive discussion and scene refinement. With the rapid development of digital technology, Internet of things technology and ICT technology, in this context, the camp of Internet of things began to divide. From the perspective of instrial practice, the rapid evolution of Internet of things in the instrial field has emerged
first of all, in order to distinguish consumer oriented 2C and instrial 2B manufacturing instries, the consumer IOT ciot and instrial IOT iiot began to be classified. Genyun, such as Haier home appliances and Sany Heavy Instry, is oriented to people and construction machinery respectively< In other words, the Internet of things can be divided into two parts: one is the instrial Internet of things; the other is the instrial Internet of things; Part of it is consumer Internet of things
it is worth noting that in the context of China, the basket of "instrial Internet of things" is very reluctant for the fields of intelligent retail, health care, intelligent building, intelligent city and intelligent agriculture. It can be regarded as other Internet of things fields other than consumer Internet of things and instrial Internet of things (there is an impulse to call these "instrial Internet" in China), However, it seems that this word has not been recognized by the mainstream
secondly, devices without Internet of things are widely activated through various protocols, gateways and data acquisition systems, which unexpectedly forms a bright situation of flowers in bud. Many mb devices, terminals, electrical appliances and other "proct orphans" have been activated and entered the network state. A large number of terminals without web address are also part of data resources through other ways
more importantly, with the rapid rise of smart phones, people, as highly depicted users, have shown great commercial value
both public opinion analysis and behavior description have become the focus of consumers' Internet of things and instrial Internet of things
at this time, the instrial Internet, as a whole resource, is on the stage again. It includes human elements, consumer procts, networking devices and non networking devices, which is the meaning of "instrial Internet" given by the Chinese people. In the current instrial Internet world, there are not only part of the Internet of people, but also instrial Internet of things and simple device connection
Instrial Internet and instrial Internet of things are mixed in the vast majority. But in fact, the two are different. For example, the instrial Internet of things can not use the most familiar HTTP protocol. HTTP, the most important cornerstone protocol of the Internet, is too slow for instrial requirements. In other words, HTTP is only suitable for instrial Internet, not for instrial Internet of things. Therefore, there are a lot of HTTP occasions in the boundary between the instrial Internet of things and the Internet of people, which can only be explained by the connotation of the instrial Internet
if we want to simplify the situation, we can simply say that the instrial Internet is composed of a part of the Internet of people, consumer Internet of things, instrial Internet of things and a large number of IP free connected devices. What does this instry include? There can be "more important" instries, such as machinery manufacturing, oil and gas and transportation; There are other lighter applications, such as smart city, agriculture, etc. Because the latter also needs a lot of instrial applications
let's also talk about the relationship with instry 4.0. All applications related to Internet of things in instry 4.0 are related to instrial Internet; However, not all instrial Internet applications can be classified as instry 4.0
the typical applications of instrial Internet are not all on machines, including lighting, intelligent transportation, intelligent machine applications, factory control, plant applications, condition monitoring, and other applications in agriculture and power equipment< In fact, it is not easy to distinguish these concepts clearly on the boundary. For example, many people are connected to the Internet, and they have been established with 3C electronic procts, such as wearable devices, mobile phones, smart home, etc. In fact, half of smart cars, smart homes and smart health devices may belong to the consumer Internet of things, and one belongs to the instrial Internet of things, but both are closely related to the Internet of people
however, boundary crossing is a very meaningful inspiration. Especially for the strategy of enterprises, they need to confirm and find their most suitable boundaries. A lot of important things often happen at the intersection of fields. This is also the reason why suppliers in different fields frequently cross boundary. ICT manufacturers, it manufacturers and automation manufacturers, which used to be completely different fields, are now discussing the topic of digital manufacturing under the same roof. This has never happened in the history of instry
it is still an era in which manufacturers carefully identify boundaries. Enterprises need to clearly divide their strategic positions. In this regard, Haier's path choice seems rather tangled. Cosmoplat, which has been striving to advocate mass customization, seems to be in the wrong line. It seems to be trying to be a consumer Internet of things, but it is actively linked with proction, closely bound with its "Internet factory" and taking the road of instrial Internet of things. This is the only attempt to actively connect the consumer Internet of things with the instrial Internet of things. Bosihua, the largest household appliance group in Europe, has tried the Internet of things for consumers, which is quite different from their attempt in the instrial Internet of things. And the car giants are trying to choose the Internet of things, and they are carefully separated from the instrial Internet of things proced by their factories
instrial data is a dynamic problem. For many years, many data of equipment have not been paid attention to. They are just "thrown in the workshop" at will, or allowed to "volatilize next to the engine" freely. The development of instrial Internet brings the rendering of data value. According to Garter's prediction in 2016, in the next few years, 40% of the data will come from sensors: mobile phones, Internet of vehicles, home appliances, as well as machines, large equipment such as power grid, aircraft and oil and gas equipment
At the beginning of the year 2020, Xiaomi successfully launched its own Wi Fi 6 routing with a Xiaomi ax3600 router, which opened the Wi Fi 6 routing market. At the same time, it directly hit the Wi Fi 6 routing from the original price of 1000 yuan to 599 yuan, an unprecedented low, so that countless users have a high-speed router that can be used for upgrading. Later, redmi launched a new routing proct ax6, which is more affordable. It uses the same specifications as Xiaomi router to ensure that it has sufficient proct strength. At the same time, it also makes the proct have higher cost performance through some simplified design and configuration
the ax6 configuration of redmi router can support the flagship of more than 1000 yuan for standard friends, support the features of dynamic bandwidth, one click connection of intelligent devices, and mesh hybrid networking to cover the whole house, which is more convenient for users to use on the Internet. In addition, for friends who like games, redmi ax6 route also gives users three-month online game acceleration members. With the graal increase of Wi Fi 6 devices and the continuous improvement of home network bandwidth, redmi ax6 routing, which costs only 399 yuan, is definitely one of the most valuable new routing procts