区块链与无线传感网络的关系,区块链与无线传感网络的区别

无线传感网络和区块链是当下最热门的两个技术，它们之间的关系也越来越紧密。本文将着重介绍它们之间的关系，以及它们之间的区别。

首先，让我们来谈谈无线传感网络和区块链之间的关系。无线传感网络可以用来收集大量的数据，而区块链技术可以用来存储和管理这些数据。可以说，两者的结合可以极大地提高传感器网络的安全性，并且还可以提高数据的准确性和可靠性。

其次，让我们来看看无线传感网络和区块链之间的区别。首先，无线传感网络是一种网络技术，它可以用来收集和传输数据，而区块链则是一种分布式账本技术，它可以用来存储和管理数据。其次，无线传感网络可以用来实时监测环境，而区块链则可以用来验证和记录交易。最后，无线传感网络可以用来实现自动化，而区块链则可以用来实现安全的数据传输和存储。

总的来说，无线传感网络和区块链之间的关系非常紧密，它们可以相互配合，构成一个安全、可靠的信息传输系统。同时，它们之间也有一定的区别，无线传感网络可以用来收集数据，而区块链则可以用来存储和管理数据。

本文介绍了无线传感网络和区块链之间的关系，以及它们之间的区别。无线传感网络可以用来收集数据，而区块链则可以用来存储和管理数据。它们的结合可以极大地提高传感器网络的安全性，并且还可以提高数据的准确性和可靠性。

『一』 What is the development prospect of the Internet of Things? You can share your views on the development prospects of the Internet of Things. .

In the past few years, the Internet of Things has been booming. According to industry research, 35 billion IoT devices will be installed globally by 2021, and 75.44 billion will be installed by 2025. Essentially, as a technology-driven network of connected devices, IoT has the potential to better enable data sharing within the system. Its ability to allow machines and devices to interact will have a positive impact on a wide range of industries.

From data-intensive experiences using IoT devices to basic health and safety needs, few trends top it, heightening its importance.

1. Connected device manufacturers will invest in healthcare

Telemedicine demand is still expected to continue to increase. Consumer interest in digital medical devices is growing due to convenience and more affordable prices, and the technology will grow to $185.6 billion by 2026, according to industry experts.

2. The Internet of Things will be popular in manufacturing

Manufacturing and other environments that use expensive machines have already experienced the benefits of remote monitoring . With the help of IoT-driven technologies, manufacturers and pharmaceutical companies will be able to connect industrial assets to remote operations this year, ensuring business as usual during the pandemic. According to industry reports, these benefits and positive impacts are expected to drive significant investment in IoT in 2021. Connected machines will continue to gain momentum in 2021 as basic industry specialists, particularly field service companies and industrial equipment companies, will increasingly use this technology.

3. The Internet of Behavior is expected to grow

The Internet of Behavior (IoB) captures the "digital information" of people's lives from various sources, Public or private entities can use this information to influence behavior.

Some useful technology tools here include location tracking, big data, and facial recognition. This trend highlights the importance of putting customers at the center of every organization’s strategy to ensure long-term success.

4. Smart building technology will drive employee experience transformation

According to a 2021 industry report, smart building technology will focus on the Internet of Things application to enable smart office initiatives. These initiatives will include smart lighting, energy and environmental monitoring, as well as sensor-based space utilization and activity monitoring.

『二』 Functional characteristics of blockchain technology

Blockchain is essentially a distributed storage system, because it adopts a transaction accounting storage model , it can also be called a distributed accounting system. Beijing Muqi Mobile Technology Co., Ltd., a professional blockchain development company, welcomes exchanges and cooperation. Let’s talk about the functional characteristics of blockchain technology.

In traditionIn platform technology, central decision-making is a very common data processing method. For example, in the traditional bank transfer method, transaction information must be processed by the bank's central server cluster, and two accounts are completed through layers of data upload and instruction distribution. transactions between. Every transaction in the blockchain is directly communicated and transacted by both parties. From the initiation of the transaction to the confirmation of transaction completion, all nodes are equal and have exactly the same permissions without going through any intermediaries. This kind of The peer-to-peer transaction model in the network makes blockchain applications free from the risks of intermediary transactions.

It should be noted that although blockchain is often called a distributed ledger, and is even essentially a distributed storage system, blockchain is different from conventional distributed systems. The distributed structure is even more special. Distribution is a concept corresponding to centralization. All sub-nodes in the centralized structure only interact with the central node and have no connection with each other. Therefore, the central node needs to bear all the load. A centralized system Efficiency is basically only related to the processing speed of the central node. At the same time, once the central node encounters problems such as blocking, deadlock, and downtime, the entire centralized system will stagnate or even collapse directly. The characteristic of the distributed structure is that there are multiple nodes that can interact with other nodes for data. Distributed network storage technology stores data dispersedly on multiple independent machines and devices. This sounds a bit confusing, but it is easy to understand if it is classified and described based on the characteristics of centralization. The distributed structure includes multi-centralized structure and decentralized structure.

A polycentralized system refers to a system composed of multiple centralized systems, each of which includes a master node and several slave nodes. When performing task processing, the master node decomposes the task into multiple sub-tasks and sends them to multiple subordinate slave nodes for simultaneous processing. After the slave node transmits the processing results back to the master node, the master node will integrate the processing results of each sub-task and finally complete the task. Of course, this is just a simplified description of task processing. A multi-centralized system may have a multi-layer master-slave structure, forming a tree-like task allocation structure. At the same time, slave nodes may also take orders from multiple master nodes to maximize efficiency based on complex task management mechanisms. But the fundamental difference between multi-centralization and decentralization is whether there is a central node that controls the operation of each master node. If the top-most node is multiple nodes, then it is decentralized. On the contrary, if there is only one node at the top, it is decentralized. It's multi-centered.

In decentralization, there is a more special structure that does not have any center, which can be called a completely decentralized structure. This is also a point-to-point network structure. This structure is This is reflected in the Bitcoin network. The relative advantages of point-to-point network structure are high fault tolerance, strong node scalability, strong privacy and data consistency, etc. However, there are also problems such as redundant communication and message delay.

Figure 5 Schematic diagram of network structure division

The "decentralization" emphasized in the general blockchain field mostly refers to the ownership level of the system. The system is decentralized if it belongs to the community and all accounts, and the system is centralized if it belongs to an institution or even an individual. Decentralization is a common feature of blockchain, but the completely decentralized structure of peer-to-peer networks has few current applications. Only public chains such as Bitcoin and Ethereum belong to this structure, because anyone in the world can Enter the system at any time to read data, send confirmable transactions, and compete for accounting activities, which results in the inability to guarantee its security and system efficiency. Private chains often have one or more centers that control the nodes, and all operations require permission from the center and are subject to its constraints and restrictions. Although it uses a decentralized mechanism for routine data processing, it is strictly A distributed blockchain deployment model. The alliance chain can be regarded as a collection of private chains, which is a compromise between the security and efficiency of the public chain. It adopts a multi-center technical architecture.

Due to the natural characteristics of the blockchain that cannot be tampered with, it is based on the consensus algorithm to ensure data consistency. No node in the system can tamper with or forge transactions. All transaction contents are certain and undisputed. There will be no credit risk in transactions, and the blockchain system will also have trustless characteristics.

Based on the changes in the content carried in the block from transactions to smart contracts, the trustlessness of the blockchain has two stages. The first stage is to verify the authenticity of historical transaction behaviors in the blockchain network. Trust, the second stage is trust in future transaction behavior based on smart contract rules.

The first stage of trust in the authenticity of historical behaviors can be simply understood as the blockchain system eliminates the process of proving historical transactions. When we tell others that something has happened, we need evidence to make others believe it, and this evidence often needs to be proved by a credible third party and provided with a credit guarantee through verification. For example, the electronic transaction slip provided by the shopping platform is evidence when shopping online, the tax bureau invoice provided by the restaurant when dining out is evidence, or the marriage certificate provided by the institution when purchasing a house using the identity of a couple is evidence. The person who accepts this information also needs to verify the evidence to be sure that these things have indeed happened. Corresponding to the previous article, when an online shopping dispute occurs, it is necessary to check whether the electronic transaction slip of the shopping platform actually exists; When reimbursing expenses, the signature of the invoice needs to be verified; when confirming the identity of two people as a couple, the anti-counterfeiting mark of the marriage certificate needs to be verified. However, the data in the blockchain system is considered to be non-tamperable and non-forgery. Therefore, as long as you explain a historical event to other nodes on the chain, you do not need any third-party certification, because the information on the data block can be obtained at any time. Come out and verify it directly, which results in the distrust of historical transactions in the blockchain.

The second stage is trust in future transaction behavior, because in an ideal state, the smart contract of the blockchain is bound to the business, that is, the smart contract has enforceability in the blockchain system. Because the smart code is completely public and is recorded in the main chain and stored by all accounts. After the smart contract is called or triggered by a certain mechanism, the transaction will be enforced and there is no possibility of denial. Therefore, users in the blockchain system do not have to worry about the other party's credit risk in the future, and there is a lack of trust in future transactions.

In the public chain, the ledger of each node completely records all transactions. The blockchain does not directly record real-time account information, but obtains real-time account information through transaction traceability. At the same time, since anyone can create a blockchain account to form a blockchain node, the information in the public chain can be considered open to everyone, which forms the open and traceable characteristics of the blockchain. And because the code of the public chain is often open source, what is open and traceable is not only the transaction data in the system, but also the transaction rules of the entire system. The high degree of openness and transparency enables the blockchain to meet many application scenarios that require open data. .

However, the blockchain has developed many variants based on the Bitcoin network, such as light nodes, private chains and consortium chains. These variants cannot meet the strict requirements of openness. Traceable. Light nodes can only execute and verify transactions, and do not have all transaction data for traceability, so light nodes do not have traceability. However, this problem only lies in the user's choice. If there is a good enough hardware environment, the user can choose to become a full node instead of a light node in order to master all data. In addition, access permission or verification is required to join a private chain or alliance chain, and read permissions are selectively open to the outside world and are not open to the entire network, which does not meet the strict sense of openness.

『三』What does the decentralization of the blockchain mean?

The decentralization of the blockchain refers to the form of social relations and content generated during the development of the blockchain. Form is a new online content production process compared to "centralization".

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. , each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

The blockchain is unified across the entire network, so it is logically centralized. From an architectural point of view, blockchain is based on a peer-to-peer network, so it has a decentralized architecture. From a governance perspective, blockchain uses consensus algorithms to make it difficult for a few people to control the entire system, so its governance is decentralized.

(3) Extended reading on blockchain and wireless sensor networks:

Characteristics of decentralization of blockchain：

Decentralization does not mean that there is no need for a center, but that the nodes can freely choose and determine the center. Simply put, centralization means the center determines the node. Nodes must rely on the center. Nodes cannot survive without the center.

In a decentralized system, anyone is a node, and anyone can become a center. No center is permanent, but is temporary, and no center is mandatory for nodes.

With the diversification of network service forms, the decentralized network model is becoming more and more clear and becoming more and more possible. After the rise of Web 2.0, the services provided by network service providers such as Wikipedia, Flickr, and Blogger are all decentralized. Any participant can submit content, and netizens can jointly create or contribute content.

Reference source: Network-Blockchain

Reference source: Network-Decentralization

『四』 What is needed to realize the Internet of Things? Technology

Basic technology of the Internet of Things:

1. Internet technology. The Internet of Things is an extension and expansion of the Internet, so Internet technology is the core technology for the development of the Internet of Things.

2. Information collection technology. The development of the Internet of Things requires the complete integration of information collection, information transmission and information processing. Information collection is the key foundation for the development of the Internet of Things. For the Internet of Things to develop , we must break through the bottleneck of information collection technology.

3. Network communication technology, stripping away the mysterious cloak of the Internet of Things, is actually a wireless sensor network that has been applied in many industries and fields. The wireless sensor network uses built-in sensors in nodes. Different sensors detect information such as temperature, humidity, noise, light intensity, pressure, soil composition, speed and direction of moving objects in the measured environment, and complete related processing and communication tasks through built-in data processing and communication units.

4. Item coding technology. Item coding is the cornerstone of the Internet of Things. It is the core and keyword of the information exchange content of the Internet of Things. It is the digital name of items, equipment, locations, attributes, etc.

5. Database technology. In the era of the Internet of Things, the number of tags representing items is on the order of trillions. Such a large amount of data needs to be managed through a database. The data is stored in a local database and the tag reader is connected to the local database.

(4) Extended reading on blockchain and wireless sensor networks

The basic characteristics of the Internet of Things are from the perspective of communication objects and processes. , Information interaction between people and things is the core of the Internet of Things. The basic characteristics of the Internet of Things can be summarized as overall perception, reliable transmission and intelligent processing.

Integrated perception can use radio frequency identification, QR codes, smart sensors and other sensing devices to perceive and obtain various information about objects. Reliable transmission is to transmit object information in real time and accurately through the integration of the Internet and wireless networks to facilitate information exchange and sharing.

IntelligentProcessing means using various intelligent technologies to analyze and process the data and information sensed and transmitted to achieve intelligent monitoring and control. Based on the above characteristics of the Internet of Things, combined with the perspective of information science, and around the flow process of information, the information processing functions of the Internet of Things can be summarized:

『五』What is the blockchain that everyone is talking about now? What the hell

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.
Blockchain technology is considered to be the next generation of disruptive core technology after steam engines, electricity, and the Internet. If steam engines release people's productivity, electricity solves people's basic living needs, and the Internet completely changes the way information is transmitted, then blockchain, as a machine that builds trust, will likely completely change the way value is transmitted in the entire human society.
1. The essence of blockchain is a distributed public ledger.
To give a popular example to explain, Mr. W’s whole family, including Mr. W, Mrs. W, Grandpa W, and Grandma W, all have their expenses recorded in their own account books. Because Mr. W’s family doesn’t trust each other. Mr. W works diligently to support his wife every month, but Mrs. W may receive 1,000 yuan but be credited with receiving 100. Wouldn’t that be a big loss?
How can we use blockchain to solve this problem?
If Mr. W gave 1,000 yuan to Mrs. W one day, he would just yell to the whole family - Mr. W gave 1,000 yuan to Mrs. W. Please write down "Mr. Madam 1000”, that’s OK.
So everyone in Mr. W’s family becomes a node, and every transaction in Mr. W’s family will be recorded by everyone (each node).
Every time who washes the dishes at night (proof of work), they can settle the account on the public ledger, and there is a reward for washing the dishes. New transactions must be added behind the ledger recognized by everyone the previous day, and other people It will also participate in verifying the transactions of the day.
2. It seems simple, but blockchain may bring revolutionary changes to human society.
1. Machine trust
Machine trust is actually trust without trust. For the first time in human history, it will be possible to establish a large-scale cooperation network unprecedented on earth at close to zero cost. This will surely be a great mass movement.
2. Value transfer
The emergence of the Internet has made a leap forward in the means of information dissemination, and information has achieved efficient flow. However, the efficiency of value transfer on the Internet is still very slow. The current electronic currency on the Internet is still essentially traditional banknotes, and cross-border payments are still a big problem.
The birth of blockchain is the beginning of mankind's construction of value transmission network. It will enable people to transmit information online as conveniently and cost-effectively asCost-effectively transfer value, which can be in the form of funds, assets, or other forms.
3. Smart contracts
Smart contracts can replace all paper contracts, and more importantly, blockchain can perfectly connect the physical world and the virtual world. The perfect combination of blockchain, Internet of Things, and artificial intelligence creates even greater room for imagination!
The blockchain itself is actually a super platform. The commercial characteristics of building machine trust, value transfer and smart contracts on the blockchain are: ① Close to zero trust cost. ②The marginal cost of constructing and trading assets approaches zero.
So web browser pioneer Marc Andreessen said: Twenty years from now, we will talk about blockchain the same way we talk about the Internet today.

『Lu』 Which domestic blockchain teams are better?

As the underlying technology of Bitcoin, blockchain deposits are very popular. Many financial giants, IT giants and Internet giants around the world are doing so. To lay out this market, blockchain-related acquisitions and financing events are increasing day by day.

Today’s blockchain is like a baby in its infancy. Bitcoin was born in 2009. As an emerging digital currency, Bitcoin has experienced several “deaths” and “rebirths”, and Even amid the turbulent development of Bitcoin, blockchain technology has gained unlimited vitality and is gradually penetrating into other industries. So, is blockchain really as awesome as we think? Will blockchain disrupt finance and other traditional industries?

Although there is still debate in the industry about the definition of blockchain, the decentralized and non-tamperable characteristics of blockchain have been basically recognized. It is precisely based on these characteristics of blockchain that many people believe that blockchain will have the power to subvert tradition. In traditional transactions, a centralized institution is often needed to solve the fundamental trust problem and conduct corresponding settlement. As a distributed ledger, blockchain means that it will produce a public ledger that can be viewed by everyone and cannot be tampered with. This method that does not require trusting a single node and can create a consensus network is considered to be promising for applications including finance and transportation. , collections, credit reporting and other fields.

However, what needs to be noted is that although there is endless news about blockchain, and major financial institutions are also actively deploying, today’s blockchain is still in its “initial stage”, and the areas where it has been implemented globally There are still very few blockchain applications, and fields of a certain scale are even harder to find.

How to accelerate the implementation of blockchain? This is the most important research direction of Puyin Blockchain Group. Puyin Blockchain solves the problem of blockchain application and how to connect with the real world, which greatly improves the circulation efficiency of digital assets. Judging from the law of technology development, any disruptive technology needs to move from the bustling concept stage to the challenging implementation stage, followed by multiple rounds of reshuffling of the entire market structure. Puyin Blockchain is a tough and tested force that changes the world in the form of asset digitization.