As a link between the supply and demand sides, the Zhongxiangchong Sharing Economy Platform is based on blockchain technology and the sharing economy as its core, integrating human, vehicle, and pile resources to create an ecologically intelligent fast charging sharing platform. Establish a safe, reliable and technically credible ledger system on the basis of blockchain technology. Using the advantages of the blockchain system, the supplier and demander of the Zhongxiangfilling platform can perform automatic operations without knowing the basic information of the other party. Transaction truly realized "trust without trust" and changed the third-party-centered trust model in the traditional model. Greatly reduced costs, simplified procedures, and reduced unnecessary transaction costs and institutional costs. It is more practical to improve the current sluggish economic environment. Provide technical support for the current prevailing charging-sharing economic network, raising the traditional charging-sharing to a new level.
The Zhongxiangchong platform is a project initiated by the Zhongxiangchong technology research and development team. It unites the technical resources, capital and network resources of the charging industry and the blockchain industry at home and abroad, and plans to create a blockchain-based technology completely developed by the Chinese. Fast charging and sharing economy platform. At the beginning of the project, well-known experts, scholars, entrepreneurs at home and abroad, as well as people in the power industry and traditional shared charging platforms were consulted. We believe that the blockchain-based charging sharing platform has endless application scenarios and broad development space. Therefore, this white paper is specially formulated, hoping to recruit a group of like-minded partners to contribute to this China fast charging sharing economy network project!
Zhongxiang charge design plan
1 Design basis
Based on blockchain technology and sharing economy, Zhongxiang Charging combines the current pain points of charging piles and the shortcomings of traditional charging pile sharing platforms, using blockchain, Internet of Things, cloud computing, mobile Internet, big data, and other new generation information technologies , Innovatively provide efficient, reliable, convenient, and sharing economic solutions.
2 Design principles
Zhongxiang Charge incorporates the user's private charging pile into the platform. The idle time of charging piles is shared and profitable. Each user is both a "pile owner" and a "consumer". The sharing of resources is realized through public sharing. Consumers can search for sharable charging piles through mobile phone software, and according to the "pile "Master" sets the sharing time to make an appointment for charging, and the user directly pays the stakeholder for charging, and the stakeholder immediately obtains the shared income.
3 Technical core
The core of Zhongxiangfu technology is based on the characteristics of distributed point-to-point, decentralization, consensus trust mechanism, non-tamperable information, openness, and anonymity of the blockchain. The technical characteristics of the blockchain and the application requirements of charging pile sharing have a good combination, which can avoid the disadvantages of centralized platforms. Based on blockchain technology, an application system with ecological operation, fair certification, smart contracts, and information transparency can be built. However, the limitations of blockchain technology in terms of processing capacity, timeliness, and storage efficiency have hindered its application in more fields. It meets the needs of transaction processing capabilities and data capacity, and is suitable for high-frequency trading scenarios. Realize a decentralized, safe and efficient charging pile sharing economy.
system structure
In order to meet different business needs, the Zhongxiang Charge platform adopts a four-tier architecture:
Wallet (Decentration Wallet): adopts the decentralized technology of blockchain and is responsible for recording transaction data in a distributed manner;
Cloud System: Responsible for providing data to the APP, scheduling charging resources, and managing the charging process
Mobile APP (ApplicaTIon): Responsible for displaying charging resources and interacting with the cloud for charging processes;
Embedded Recharge Platform: Responsible for controlling the charging equipment and interactive charging process with the cloud.
1 wallet
The following pain points often encountered during the implementation of traditional online trading projects:
1. Data is easily tampered with by developers or hackers to achieve a certain purpose;
2. Transaction records cannot be traced back, and can only rely on intermediate server records that may be tampered with;
3. Users do not trust the transaction process, results, etc. records.
In response to these three pain points, a decentralized wallet based on blockchain technology came into being. Decentralization, as the name suggests, is no longer based on the "center" of the trading platform like traditional trading platforms. And all transaction records are recorded by multiple nodes at the same time, for example, a transaction is confirmed by 100 nodes at the same time. In this way, malicious tampering by technicians is fundamentally avoided, which greatly increases the cost of hacker attacks. It is necessary to break 51 nodes to tamper with data. The lack of a "central" platform's technical architecture itself also allows users to trust the authority of transaction records more.
Decentralized wallets have the following three characteristics:
1. Personal wealth is private and should not be known casually when one does not want to make it public.
2. Personal wealth will not shrink due to inflation, so currency should not be issued to cause inflation;
3. Individuals have the right to speak of their own wealth, which means that centralized institutions cannot control, tamper with, or take away.
The wallet, as the "mother" of virtual currency, is the lowest-level tool application of encrypted digital currency, almost coexisting with token, earlier than the emergence of exchanges. Its function is to make the string of code revenue generated on the chain explicit and turn it into a digital symbol that can be recognized and measured by the public. Generally, wallets based on blockchain technology can be divided into On-chain and Off-chain in terms of transaction methods. Literally understood, the former is an on-chain transaction, and all transaction records can be queried on the chain, and the latter It is an off-chain wallet, transactions do not go through the chain, which is fast and convenient. The system wallet adopts an on-chain method to ensure that all records are stored on the chain, which is easy to check.
In addition, as the unique address identification of a "person", the private key is indispensable in the technology of the blockchain. There are two types of storage methods for the private key in the system: hot wallet and cold wallet, both of which have their own characteristics.
Cold wallet:
Suitable for wallets with large amounts of funds. The public and private key pairs of the wallet are generated offline. Users can generate any key pair they like. After the key is selected, a public key starting with G can be provided to accept large amounts of funds and be kept under their own custody. Good private key information starting with S.
Hot wallet:
The hot wallet is suitable for small fast transaction scenarios. The hot wallet key adopts the custody method. When the user registers the wallet account, the private key generated by the user's payment password will be encrypted locally on the user's computer through 3DES, and the encrypted result will be passed through the SSL protocol. Hosted in the wallet cloud. That is, the hot wallet key information transmitted on the network and stored in the cloud is data encrypted by the user, and no one except the wallet user can obtain the original content of the private key. When the user needs to sign a transaction, the private key will be obtained from the wallet cloud server, and the user enters the payment password to decrypt the content on the user's local computer. After the decryption is successful, the wallet local program will sign the transaction information with the private key and submit it Trade on the super blockchain network.
The system adopts the hot wallet scheme, giving priority to ensuring fast and fast transactions. The private key generation method adopts the deterministic wallet scheme, which ensures the security of the user's private key and facilitates the management, backup and import of the wallet.
Considering the early operating cost and stability of the system, we chose the light wallet (SPV) method for the decentralization of the wallet, that is, accessing the wallet through the Web. The wallet uses the SSL protocol and supports Symantec CA certificates. At the same time, the wallet can support cold wallets and hot wallets.
2 Cloud system
The cloud system is the core part of the entire system (Core Component). It includes the bridge function of the entire process control, recording, interaction with the wallet, interaction with the device, and interaction with the APP.
The system adopts the core architecture of SpringMVC+MybaTIs+Redis+Oracle. Based on the latest Web3.1 technology, based on the distributed agile development system architecture, provide a complete set of public service modules: centralized authority management (SSO single sign-on), message queue, WebService interface, content management (CMS), payment center (Payment Center) , User management, storage system, configuration center, log analysis, tasks and notifications, etc.
Spring MVC is currently the most common Java platform framework, widely used in finance, trade, B2B, government management and other major fields. It has features such as rich extension functions, excellent execution logic, and highly available code architecture. Through the strategy interface, the Spring framework is highly configurable and includes a variety of view technologies: JavaServer Pages (JSP) technology, Velocity, TIles, iText, POI, etc. Spring MVC separates the roles of controllers, model objects, filters, and handler objects. This separation makes them easier to customize. Support locale parsing, theme parsing and file uploading, etc.; provide very flexible data verification, formatting and data binding mechanisms; provide powerful contract programming that is greater than configuration (convention first principle) stand by.
At the same time, in order to target high concurrency scenarios, the cloud system adopts the nginx cluster deployment method, uses the Redis cache cluster to manage the cache to improve access efficiency, and uses the Oracle database cluster to reduce database read and write bottlenecks.
3 Mobile APP
Adopting IOS+Android dual mobile terminal solution, real-time display of nearby charging resources for grounding map service and positioning service, management of charging process, management of payment, etc., to minimize user usage costs.
The charging reservation function allows users to reserve charging resources without leaving home, preventing the problem of not being able to grab resources during peak usage.
After charging, the payment can be completed through virtual currency with one click, which maximizes the use efficiency, reduces the waste of time for users, and improves the user experience of the product.
With the wallet browser function, users can review their virtual currency transaction records and charging transaction records anytime and anywhere, and the data in the transaction records cannot be tampered with, increasing the user's sense of trust.
4 Charging equipment platform
Adopt the concept of Internet of Things, and use the Data DistribuTIon Service for Real-Time Systems (DDS) data exchange protocol of the Internet of Things to ensure the real-time and accuracy of data interaction.
DDS is a data distribution service oriented to real-time systems, proposed by the authoritative communication protocol assembly OMG, and is mainly suitable for data communication with distributed high-reliability, real-time transmission equipment. At present, DDS has been widely used in fields such as national defense, civil aviation, and industrial control.
The platform uses embedded technology to control the device, so that the device has the function of interacting with the cloud. Mainly responsible for hardware-level control of the device and interaction with the cloud.
The smart switch can be controlled, and the power supply will be charged after the user chooses to charge, and the power will be automatically cut off when the charging is completed, which is fully intelligent/programmed. It can receive control instructions from the cloud, and complete the control of the device according to the cloud instructions. At the same time, information such as control logs/device messages can be sent to the cloud to complete the interaction process.
The reader uses 51 single-chip microcomputer as the central processing unit. The 51 single-chip has IO port read and write functions, supports serial port protocol, SPI protocol, IIC protocol, is expandable, simple to program, low cost, low power consumption and other significant features. The reader uploads the collected sensor data to the repeater, and can also obtain data from the repeater to control these sensors. The reader converts the analog signal collected by the sensor into a digital signal, then encapsulates the packet data that can be sent, or directly sends it to the base station. There are two schemes for the physical conditions of data transmission: real-time transmission of data through the 485 bus protocol through the serial line. This scheme has high transmission efficiency, stable data, high cost, and inconvenient expansion. The advantage of the 485 bus is that it can realize the underlying networking function, with its own RCC verification; it can also transmit the collected sensor data through wireless electromagnetic waves, and the hardware can select the RF radio frequency chip to send wireless data.
The intelligent switch is realized by light-weight industrial control standards and adopts the standard 323 or 485 serial bus protocol to receive instructions from the client and control the opening and closing of the charging circuit. And timely feedback whether the client control command is successfully and accurately executed. If a command execution problem occurs, the client should be notified in time, and the client initiates notification information to the cloud to perform error log recording and processing.
The data encrypted by the client can be sent to the server through encrypted https communication. Due to the need to transmit reliable data, the client and the cloud in the system interact with the https protocol with high encryption specifications. And in the request, all data is encrypted to prevent hacker attacks on the cloud to the greatest extent.
Project Benefits
1 Sharing resources to create value
As a link between the supply and demand parties, the Zhongxiangcharging platform uses smart contract technology to build a blockchain ecosystem to realize decentralized, safe, efficient and automatic point-to-point sharing of charging piles. In addition to satisfying personal use, private charging pile owners can share a large amount of idle time of charging piles through the platform, allowing private charging pile owners and users to share resources through charging piles for transactions, and private pile owners can obtain benefits when sharing beneficial resources.
2 Trustless transactions
Decentralized trading is the core of Zhongxiangfu. In fact, under the sharing economy model, it is rare for both parties to establish a direct payment channel. Unfamiliar parties to a transaction often need to use an intermediary to build an indirect payment channel network. The self-trust of the blockchain is mainly reflected in the fact that users distributed in the blockchain do not need to trust the other party of the transaction, and realize decentralized transactions between the stakeholder and the user without mutual trust.
3 Decentralized instant payment
Consumers use digital currency to complete instant payment after successfully charging on the Zhongxiang charging platform, and the stakeholder receives the corresponding amount of legal currency (deducting a certain handling fee) in real time.
4 Open and transparent information
The system is open, except that the private information of the parties to the transaction is encrypted, the data of the blockchain is open to everyone, and anyone can query blockchain data and develop related applications through the open interface, so the entire system information is highly transparent .
5 Data security is high and cannot be tampered with
Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% of the nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid, so the data of the blockchain is stable. High performance and reliability.
6 IoT smart charging pile
The Internet of Things charging pile adopts the self-developed car networking charging pile identification module, which can be connected to the car networking cloud platform developed by the center to realize the car networking management of the charging pile group and APP reservation charging. At the same time, the module integrates wireless authentication technology to realize the interconnection between pile and parking spaces.
7 Establish a strong community system
Charging pile owners and electric vehicle owners form a huge community, and maintaining peer-to-peer trust in the community is the key to sustainable development.
8 Reduce the demand for exclusive rights
Based on blockchain technology, building a mature, stable and reliable sharing economy model, using shared resources can reduce the need to own charging piles.
Issuance plan
In order to develop, promote and operate the Zhongxiangchuang project, the Zhongxiangchuang team plans to publicly raise funds for R&D, promotion and operation from the public to support the rapid development of the project. After many times of communication between the Zhongxiangdian team and law firms and evaluation agencies, it was decided to issue 1.2 billion Zhongxiangdian tokens (AS) and promised that the Zhongxiangdian token AS will never be issued.
In consideration of investment value, stability, security performance, etc., Zhongxiangtou Token (AS) finally decided to choose Ethereum (ETH) for the exchange of tokens. Because Ethereum has a long-term upward trend, the Zhongxiangtou team also pays attention to value investment. , Also advocates value investment, so it is very encouraged to use Ethereum as an exchange currency. Zhongxiangzheng will complete the issuance and online trading of the exchange within 30 days after the crowdfunding. At the same time, the Zhongxiangdian team will maintain good communication with various exchanges to ensure that the tokens will land on many large mainstream exchanges by then. Better demonstrate the value and charm of AS.
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