Internet of things blockchain security
1. What is the Internet of things
in fact, in a simple way, big data is to assist decision-making by analyzing and mining a full amount of non sampling data
the characteristics of big data
big data refers to the massive, high growth rate and diversified information capital that needs new data processing mode to collect, store, manage and analyze its content for the purpose of serving decision-making
big data has the following essential characteristics:
1. The fundamental purpose is to serve decision-making. Big data can help all kinds of organizations and indivials greatly improve their decision-making ability and make better decisions and judgments
Big data usually refers to the amount of data above 100t, which is difficult to be calculated effectively by traditional calculation methods, but must rely on new calculation methods and data mining tools3. High frequency, big data is the data generated by user participation and interaction, according to the user's network traces to timely understand the user's relevant data, this kind of data is high-frequency data calculated by day or even hour. But the traditional data frequency is very low, many data are calculated by month or even by year
Big data is real-time data and can react in real time. For example, entering a keyword in the web search box can instantly present it, while the traditional data collection method is seriously lagging behind5. Always online. Online is the precondition of big data. From this point of view, big data is always online and can be called at any time. By analyzing the traces of users on various network terminals, big data can better analyze users' behaviors, emotions, thoughts, hobbies and needs, so as to make better decisions and analysis
three key points of big data
first, the availability of data. At present, in China, the development of big data is seriously constrained by the lack of publicity of government information, a lot of data is difficult to obtain, leading to the difficulty of real big data mining and analysis, which requires the government to open more data in time to improve the availability of data
Secondly, the scientific model construction. The scientific nature of the model directly determines the quality of data analysis, which requires a high level of modeling, of course, the more data is concive to the reasonable construction of the modelThird, use experts to refine opinions. The original and high-quality viewpoint based on data mining, which provides the basis for decision-making, highly relies on high-quality data interpretation, which reflects the value of instry experts
provided by IOT media
the term "Internet of things" is mentioned almost every day in today's life. Some data show that in 2017, there were about 8.4 billion intelligent devices connected to the Internet, such as thermostats, cameras, street lamps and other electronic procts. According to foreign McKinsey & company data, this number may reach 25 billion by 2025, and the scale of the whole economy will reach 6 trillion US dollars
are you dazzled by such a huge number? Although the Internet of things technology has been widely used all over the world, its defects are graally highlighted
according to the traditional mode, the data center (server) of the equipment manufacturer often collects the information of all connected devices, which determines that the server needs to have strong operation and storage capacity. Moreover, with the geometric growth of Internet of things equipment, the cost of server maintenance will also increase greatly, which makes it difficult for small and medium-sized enterprises to maintain
at the same time, in terms of communication compatibility, the global Internet of things platforms are lack of a unified language, which is easy to cause communication obstacles between multiple Internet of things devices. This is e to the obvious fragmentation of the Internet of things instry, whether it is smart home, smart home appliances, robots, smart cars, etc., the networks they connect are fragmented and closed. In addition, the status quo of the Internet of things instry is still full of mountains, and their influence is relatively limited, so it is difficult to reach a unified standard in a short time
based on this, the standard chain team, after accumulating the previous experience from the Internet of things, combined with the characteristics of blockchain, proposed the concept of Internet of things
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blockchain, which appeared in front of you when bitcoin was born a few years ago, is essentially a distributed data account book. We can see blockchain technology as an underlying code system in the Internet, which is decentralized, open, transparent, anonymous, user-friendly and user-friendly It can't be tampered with. Blockchain basically solves most of the trust problems in the weak trust environment, and has a wide range of applications. It can be combined with almost all fields, and even change the proction relationship of our three proction factors
the Internet of things, literally means "the network connecting things", its core is actually based on the data communication between the Internet and offline sensor devices. The Internet of things can be said to be the proct of the Internet extending offline. If the previous Internet era is a pure online information era, then the Internet of things will bring a new network era of Online + offline combination. All things are interconnected, which will greatly change our proction and life, improve and improve proctivity
then, how can blockchain and Internet of things be combined? Maybe there are different application scenarios in different instries. Recently, I saw a technology company called chaincmop chain computing, which has a smart farming management scheme that uses IOT equipment to monitor farm conditions + blockchain system in agricultural breeding, which is very enlightening. For example, in the future, you can use the Internet of things devices to detect the temperature, humidity and seed status of granary seeds in an all-round way, and these data can be synchronized and encrypted by using the distributed and encrypted features of the blockchain, so that the monitoring data can be more efficiently transmitted to each node, and the monitoring data can be well protected, To avoid tampering in the process of transmission.
blockchain can also be naturally combined in the field of Internet of things and logistics
through blockchain, we can rece logistics costs, trace the proction and delivery process of goods, and improve the efficiency of supply chain management
this field is considered as a promising application direction of blockchain.
first, because the US dollar is relatively "valuable", for example, the current US dollar = 6.6155 yuan, so the base is small when converting bitcoin
Second, there is a price difference between Chinese and foreign bitcoin exchanges, for example, the price of the US exchange is generally 1% - 2% lower than that of China, and even 9% more often, plus the transaction and withdrawal fees, It will also lose part of the value of the currency
because domestic people invest more in bitcoin, and bitcoin is fixed and limited, it is inevitable that the price of bitcoin is high. This does not rule out that makers are pushing up the price. The number of users and trading volume of each exchange are different. The price of bitcoin is caused by many factors, especially for countries with foreign exchange control, The price difference between China and foreign countries will be relatively high--- Wan foreign exchange assistant
it is expected that the blockchain technology can promote the development of the Internet of things. Through technology and incentive mechanism, the Internet of things will eventually become the mainstream population and bring people more convenient, safe and reliable services.