CN112261081B - Block chain system applied to urban rail transit - Google Patents

Block chain system applied to urban rail transit Download PDF

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CN112261081B
CN112261081B CN202010991887.0A CN202010991887A CN112261081B CN 112261081 B CN112261081 B CN 112261081B CN 202010991887 A CN202010991887 A CN 202010991887A CN 112261081 B CN112261081 B CN 112261081B
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朱力
熊寒
王洪伟
唐涛
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Beijing Jiaotong University
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Abstract

The invention belongs to the field of electrified traffic, and particularly relates to a block chain system applied to urban rail traffic. The blockchain system comprises: the system comprises a resource virtualization blockchain platform, a cloud platform and a routing device, wherein the resource virtualization blockchain platform is connected with the cloud platform through the routing device; the resource virtualization blockchain platform is composed of a plurality of blockchain physical node devices, and the cloud platform is composed of a plurality of blockchain cloud servers. The system realizes the adjustment of transaction confirmation time by adjusting the number of block chain nodes in a transaction type grading way on the premise of not sacrificing the existing data storage function and the performance of a communication system of the rail transit train control system, and dynamically adjusts the real-time performance and the safety performance of the urban rail transit system so as to ensure the balance of the real-time performance and the safety performance of different services in the urban rail transit system.

Description

Block chain system applied to urban rail transit
Technical Field
The invention belongs to the field of electrified traffic, and particularly relates to a block chain system applied to urban rail transit based on a block chain technology, a cloud computing technology and a virtualization technology.
Background
The urban rail transit system is large in scale and numerous in related fields, the requirements of urban rail transit on operation and maintenance are higher and higher, the burden of operation and maintenance departments is heavier and heavier, and the requirements on the management level, professional knowledge and technology of operation and maintenance personnel are correspondingly improved. The development of emerging technologies such as big data, cloud computing, wireless communication, health management and the like pushes urban rail transit to be intelligent step by step. Under the new situation that the network operation scale is rapidly enlarged, a large number of rail transit operation and maintenance managers are increased and have extensive operation and maintenance management modes, so that the operation and maintenance cost is high, and the situation is kept rising. The whole rail transit industry calls an innovative management mode to realize intelligent operation and maintenance. At the moment, the flow record of intelligent operation and maintenance can be effectively realized by using the block chain technology, the full-flow tracking of system operation and maintenance is facilitated, the operation and maintenance frequency is ensured to be accurate, data cannot be tampered, and the operation and maintenance can be carried out on schedule. The block chain technology can be used for realizing the whole-course tracking of the pre-ground, design and construction stages in the construction stage of the rail transit, and the change sequence is ensured through the timestamp, so that the wrong repeated construction is avoided; the distributed characteristic of the block chain is utilized to reconstruct the training process of the current machine model of the data-driven rail transit, so that the learning efficiency, safety and robustness can be effectively improved; the distributed characteristic of the block chain can also be used for improving the key management system of the current rail transit, and the information safety of the rail transit system is improved.
When the block chain is applied to the urban rail transit system, the relevant requirements under the special application environment of the urban rail transit system must be considered. In the background of the prior art, the conventional communication-based thunder vehicle control system (CBTC) and the block chain system have the following problems:
(1) The general block chain system has low expandability and cannot be directly applied in the urban rail transit environment.
In mainstream applications of blockchains, bitcoins can handle about 7 transactions per second, and etherhouse (Ethereum) can handle about 15 transactions. However, existing mainstream transaction systems have processing power much greater than this number, and VISA can process up to 2000 transactions per second. Therefore, even in a regular transaction, the processing power of the blockchain can affect the application of the transactor. For example, in the captokitties transaction in 12 months in 2017 and the fcin transaction in 7 months in 2018, due to low processing capacity of the etherhouses, the transactions are severely crowded, and further large-scale increase of transaction processing time and transaction cost is caused. Another problem that is relatively large compared to transaction rates is the solidification of the platform, i.e. once the platform is built, the functionality is basically determined and it is difficult to make large-scale changes in functionality. This problem extends beyond the other problem with current blockchain platforms, such as the bitcoin platform being prepared for cryptocurrency and the IOTA platform being prepared for the internet of things, which is too professional.
The vitaik Buterin by the founder of Etheng proposes the three difficult problems of the block chain system, and indicates that the system can only meet the three indexes of the distributed characteristic, the expandable characteristic and the system security at the same time. At present, no good method is provided for perfectly solving the problem of expandability of a block chain. At present, the method for improving the capacity of the blockchain system is single, and mostly improves the expandability of the system by improving the transaction throughput, such as Lightning Network, raiden Network, EOS, zilliqa, and the like.
However, internet experience has taught that simply increasing throughput does not solve the congestion problem well. The single method may bring more serious consequences, and on the premise of no proper QoS design, because different applications have different QoS requirements, the dynamics of the application requirements, the dynamics of available resources, the loss of the central coordination function of the distributed network, and the like, the simple improvement of the throughput may further increase the network congestion, and further affect the scalability of the block chain platform.
(2) The urban rail transit has higher and higher requirements on operation and maintenance, but the flow records of the operation and maintenance are not intelligent enough.
With the rapid expansion of the operation scale of high-speed railways and urban rail transit in China, the whole rail transit industry begins to show huge rigid requirements for guaranteeing operation safety, improving service quality and reducing operation cost, and increasingly higher requirements are provided for the reliability, availability, maintainability and safety of facilities and equipment. At present, rail transit operation and maintenance in China presents the situations of uneven personnel distribution, personalized line, differentiated technical level, diversified equipment systems, continuous rise of passenger flow, over-standard crowding degree and high-efficiency emergency handling, and is particularly shown in the following steps: the operation and maintenance efficiency is low, operation and maintenance data are not refined enough, the frequency is not high enough, and a system platform for processing and analyzing large data of equipment facilities and intelligent application are lacked. These problems affect the improvement of the service quality and bring about potential safety hazards. With the subsequent opening operation of larger-scale lines, the requirement of rapid development of the industry is difficult to meet by means of the traditional rail transit operation and maintenance mode, and the operation and maintenance information must be recorded more safely and efficiently by adopting a more intelligent mode.
Disclosure of Invention
In view of the above technical problems, the present invention provides a block chain system for an urban rail transit system. The system adopts a block chain technology, a cloud computing technology and a virtualization technology and consists of a plurality of block chain node servers, a cloud computing server and a routing device. The system can adjust the number of the block chain nodes through the classification of the transaction types on the premise of not influencing the existing data storage function and operation mode of urban rail transit, thereby realizing the adjustment of transaction confirmation time, dynamically adjusting the real-time performance and safety of the system, and ensuring the balance of the real-time performance and safety of different services in the operation and maintenance of the urban rail transit system.
The invention is realized by the following technical scheme:
a blockchain system for urban rail transit, the blockchain system comprising: the system comprises a resource virtualization blockchain platform, a cloud platform and a routing device, wherein the resource virtualization blockchain platform is connected with the cloud platform through the routing device;
the resource virtualization blockchain platform is composed of a plurality of blockchain physical node devices, and the cloud platform is composed of a plurality of blockchain cloud servers; the system further perfects the calling of virtualized resources by utilizing resource virtualization cloud nodes deployed on a cloud platform on the basis of building a plurality of block chain physical nodes;
the system realizes the adjustment of transaction confirmation time by adjusting the number of block chain nodes in a transaction type grading way on the premise of not sacrificing the existing data storage function and the performance of a communication system of the rail transit train control system, and dynamically adjusts the real-time performance and the safety performance of the urban rail transit system so as to ensure the balance of the real-time performance and the safety performance of different services in the urban rail transit system.
Furthermore, a plurality of block chain cloud servers on the cloud platform are used as a plurality of block chain cloud nodes; and deploying the block chain cloud nodes on the cloud platform to realize expansion of the block chain nodes on the cloud platform, wherein the block chain cloud nodes on the cloud platform can complete the same block chain operation as that on the block chain physical nodes, and the block chain cloud nodes are in butt joint with the block chain physical node equipment to be communicated with each other.
Further, the block chain cloud node deployed on the cloud platform serves as an execution node; interaction can be completed between the block chain cloud node and the block chain physical node on the resource virtualization block chain platform, so that the number of execution nodes is increased. The virtualization of the resources is further realized, and the realization mode is shown in the following fig. 3. Meanwhile, more block chain link points are beneficial to further configuration and calling of virtualized resources on the block chain to realize transaction classification, the transaction processing rate of the block chain is improved, the expandability of a resource virtualization block chain platform is improved, and efficient and safe operation of the system is realized.
Furthermore, the block chain cloud nodes deployed on the cloud platform are used for designing a resource virtualization scheme, and the block chain cloud nodes serve as execution nodes and can be adjusted by the control nodes to determine whether to join the block chain system to confirm the transaction, so that the transaction confirmation process is further adjusted, and safety and real-time performance are guaranteed.
Furthermore, the system forms a private blockchain platform, and the functions of user creation, key creation, intelligent contract deployment, transaction transmission and connection and disconnection of blockchain nodes can be completed under the blockchain platform; and the user completes the operation through the client component, and the distributed recording and storage of the information on the block chain are realized.
Further, a block chain system is deployed by utilizing a resource virtualization technology; and adjusting the block link points through a designed resource virtualization scheme.
The method comprises the steps of grading the transactions needing to be recorded according to different requirements of different transaction types on safety and real-time performance under urban rail transit, adjusting the number of block chain nodes when the transactions are sent according to the transaction grades, and adjusting transaction confirmation time.
Furthermore, by means of separation of the control layer and the execution layer, the block chain nodes are divided into control nodes and execution nodes, the control nodes can dynamically adjust the number of the execution nodes participating in transaction confirmation through the transaction grade, flexible allocation of block chain resources is achieved, and therefore the requirements of the urban rail transit system on safety and real-time performance of various services are met.
Furthermore, a cloud computing technology is adopted, a block chain system applied to the urban rail transit system is built on the cloud computing server, virtualization of block chain resources on a cloud platform is achieved, and physical resources are fully and effectively utilized under the condition that original functions of the block chain are not lost.
The invention has the beneficial technical effects that:
compared with a general block chain system in the prior art, the block chain system in the invention uses a virtualization technology, realizes a resource virtualization scheme by using a transaction classification and control plane and service plane separation mode, can be effectively applied to a special application environment of rail transit, meets the requirement of the urban rail transit system on the real-time performance of related operation and maintenance service operation, ensures the safety of service information, and improves the expandability of the existing general block chain system.
The block chain system applied to the urban rail transit system records the service information in the urban rail transit operation maintenance by using the block chain technology, the transaction information which is uploaded to the block chain system and contains the service state cannot be tampered, and an attacker needs to attack more than two thirds of nodes under the whole network if wanting to maliciously change the transaction record, so that the situation is almost impossible. The block chain effectively ensures the safety and privacy of the service information.
Drawings
Fig. 1 is a schematic diagram of a block chain system applied to an urban rail transit system according to an embodiment of the present invention;
FIG. 2 is a block chain system transaction hierarchy according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a separation of a control layer and an execution layer of a blockchain system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a system for recording track traffic operation and maintenance information in a block chain according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
The embodiment of the invention provides a block chain system applied to urban rail transit, as shown in fig. 1, the block chain system comprises: the system comprises a resource virtualization blockchain platform, a cloud platform and a routing device, wherein the resource virtualization blockchain platform is connected with the cloud platform through the routing device; the resource virtualization blockchain platform is composed of a plurality of blockchain physical node devices, and the cloud platform is composed of a plurality of blockchain cloud servers;
the system further improves the calling of virtualized resources under the system by using resource virtualization cloud nodes deployed on the cloud platform on the basis of building a plurality of block chain physical nodes.
The system realizes the adjustment of transaction confirmation time by adjusting the number of block chain nodes in a transaction type grading way on the premise of not sacrificing the existing data storage function and the performance of a communication system of the rail transit train control system, and dynamically adjusts the real-time performance and the safety performance of the urban rail transit system so as to ensure the balance of the real-time performance and the safety performance of different services in the urban rail transit system.
In this embodiment, a plurality of blockchain cloud servers on the cloud platform serve as a plurality of blockchain cloud nodes; and deploying the block chain cloud nodes on the cloud platform to realize expansion of the block chain nodes on the cloud platform, wherein the block chain cloud nodes on the cloud platform can complete the same block chain operation as the block chain physical nodes, and the block chain cloud nodes are in butt joint with the block chain physical node devices to communicate with each other.
In the embodiment, a control layer and an execution layer are separated, block chain nodes are divided into control nodes and execution nodes, the control nodes can dynamically adjust the number of the execution nodes participating in transaction confirmation through transaction levels, and flexible allocation of block chain resources is realized, so that the safety and real-time requirements of various services under an urban rail transit system are met.
In this embodiment, the block chain cloud node deployed on the cloud platform serves as an execution node; interaction can be completed between the block chain cloud node and the block chain physical node on the resource virtualization block chain platform, so that the number of execution nodes is increased.
In this embodiment, the blockchain cloud node deployed on the cloud platform serves as an execution node, and can be adjusted by the control node whether to join the blockchain system to confirm the transaction, so that the confirmation process of the transaction is further adjusted, and the security and the real-time performance are ensured.
In this embodiment, the system forms a private blockchain platform, and functions of user creation, key creation, intelligent contract deployment, transaction transmission, blockchain link point connection and disconnection can be completed under the blockchain platform; and the user completes the operation through the client component, and the distributed recording and storage of the information on the block chain are realized.
In this embodiment, the blockchain system deploys the blockchain system by using a resource virtualization technology, and a designed resource virtualization scheme adjusts the blockchain link points. The transaction to be recorded is classified according to different requirements of different transaction types on safety and real-time performance under urban rail transit, the number of block chain nodes is adjusted when the transaction is sent according to the transaction grade, and adjustment of transaction confirmation time is achieved.
In the embodiment, a cloud computing technology is adopted, a block chain system applied to an urban rail transit system is built on a cloud computing server, virtualization of block chain resources on a cloud platform is achieved, and physical resources are fully and effectively utilized under the condition that original functions of the block chain are not lost.
In the invention, the function of the block chain is to virtualize physical resources to complete the adjustment of block chain node resources. Since different transactions have different application quality of service requirements, the services and applications need to be handled differently. The transaction ranking mechanism may efficiently fulfill different quality of service requirements. Transactions that need to be sent to the blockchain are classified and classified by rank, and when a transaction matches a certain class of characteristic requirements, the transaction is directed to this class of queues. After a class and its matching conditions are defined, the transaction can be given corresponding characteristics according to the application service quality, so as to realize the grade differentiation of the transaction. The transaction ranking is as shown in figure 2 below.
The invention utilizes this feature to make the transaction confirmation time different at different levels. The transaction with high priority requires more complicated confirmation process and longer confirmation time, and the security is higher; the confirmation process for low priority transactions is relatively simpler, the confirmation time is relatively shorter, and the confirmation rate is faster. In the invention, the registration and the updating of the secret key are set to be the same higher priority, and the security requirements of the two types of transactions are higher; the key recovery and revocation priorities are correspondingly lower, but the transaction rate is faster. Therefore, on the premise of ensuring the number of the control nodes, the number of the nodes participating in transaction confirmation is adjusted to realize the adjustment of the transaction confirmation process time.
A plurality of block chain nodes are deployed on the cloud platform, and the cloud node is used as an execution node to complete interaction with other block chain nodes on the original physical device, so that the number of the original execution nodes is increased, the virtualization of resources is further realized, and the realization mode is shown in fig. 3 below. Meanwhile, more block chain link points are beneficial to further configuration and calling of virtualized resources on the block chain to realize transaction classification, the transaction processing rate of the block chain is improved, the expandability of a resource virtualization block chain platform is improved, and efficient and safe operation of the system is realized.
In this embodiment, the block chain system is applied to the operation and maintenance of the urban rail transit system, so as to explain the specific application of the block chain system: because urban rail transit and railway are the same rail transit, there are many management and technical commonality, and many management modes and technical requirements that the railway operation was maintained have been consulted in urban rail transit construction and management, and urban rail transit also needs to be equipped with and pulls power supply and engineering detection monitoring facilities to guarantee the safe operation of traffic. The detection record or the related work result needs to be recorded after the traction power supply and related work engineering detection and monitoring equipment finishes work, and the content includes, for example, the working state of a catenary, the detection states of a track, a tunnel and a bridge, the detection states of train parts and the like.
Under the rail transit working environment, all the operation and recording time is strictly regulated and controlled, so that the real-time performance of the information recording is ensured; meanwhile, the information has relevant confidentiality requirements, and the security of the data must be ensured. The blockchain system applied to the urban rail transit system proposed in the present invention can hierarchically record the information to be recorded, and upload the information to the blockchain as transaction content, as shown in fig. 4. Meanwhile, the real-time performance and the safety of information recording are balanced by utilizing the technology of separating the control layer from the execution layer. Generally, the safety of the line state in rail transit is very important, so when the detection states of a rail, a tunnel and a bridge are recorded, the safety of the information transaction uploading needs to be emphasized more, and at the moment, more execution node equipment is adopted to confirm the transaction information, so that the safety of data is ensured. Meanwhile, the transaction information with a relatively lower security level requires fewer execution nodes during uploading, so that the real-time performance of data uploading is ensured, and the recording of related information is completed quickly.
The block chain system provided by the invention adopts a block chain technology, a cloud computing technology and a virtualization technology, and consists of a plurality of block chain node servers, cloud computing servers and routing equipment. The system can adjust the number of the block chain nodes through the classification of the transaction types on the premise of not influencing the existing data storage function and operation mode of urban rail transit, thereby realizing the adjustment of transaction confirmation time, dynamically adjusting the real-time performance and safety of the system, and ensuring the balance of the real-time performance and safety of different services in the operation and maintenance of the urban rail transit system.

Claims (4)

1. A blockchain system for urban rail transit, the blockchain system comprising: the system comprises a resource virtualization blockchain platform, a cloud platform and a routing device, wherein the resource virtualization blockchain platform is connected with the cloud platform through the routing device;
the resource virtualization blockchain platform is composed of a plurality of blockchain physical node devices, and the cloud platform is composed of a plurality of blockchain cloud servers; on the basis of building a plurality of block chain physical nodes, the system further perfects the calling of virtualized resources under the system by using the block chain cloud nodes deployed on the cloud platform;
the system adjusts the number of block chain execution nodes through the classification of transaction types on the premise of not sacrificing the existing data storage function and the performance of a communication system of the rail transit train control system, wherein the execution nodes are nodes participating in consensus, so that the adjustment of transaction confirmation time is realized, the real-time performance and the safety of the urban rail transit system are dynamically adjusted, and the balance of the real-time performance and the safety of different services in the urban rail transit system is ensured;
by means of separation of the control layer and the execution layer, the control node can dynamically adjust the number of execution nodes participating in transaction confirmation through transaction grade, and flexible allocation of block chain resources is achieved, so that the safety and real-time requirements of various services under an urban rail transit system are met;
the block chain cloud node deployed on the cloud platform serves as an execution node; interaction can be completed between the block chain cloud node and the block chain physical node on the resource virtualization block chain platform, so that the number of execution nodes is increased;
the block chain cloud nodes deployed on the cloud platform serve as execution nodes, and can be adjusted by the control nodes to determine whether to join the block chain system to confirm the transaction, so that the transaction confirmation process is further adjusted, and the safety and the real-time performance are guaranteed;
the method comprises the steps of grading the transactions needing to be recorded according to different requirements of different transaction types on safety and real-time performance under urban rail transit, adjusting the number of block chain execution nodes when the transactions are sent according to the transaction grades, and adjusting transaction confirmation time.
2. The system of claim 1, wherein the cloud platforms comprise a plurality of cloud servers as cloud nodes; and deploying the block chain cloud nodes on the cloud platform to expand the block chain execution nodes on the cloud platform, wherein the block chain cloud nodes on the cloud platform can complete the same block chain operation as the block chain physical nodes, and the block chain cloud nodes are in butt joint with the block chain physical node devices to communicate with each other.
3. The blockchain system applied to urban rail transit is characterized in that the system forms a private blockchain platform under which functions of user creation, key creation, intelligent contract deployment, transaction transmission, blockchain link point connection and disconnection can be completed; and the user completes the operation through the client component, and the distributed recording and storage of the information on the block chain are realized.
4. The block chain system applied to urban rail transit according to claim 1, wherein a cloud computing technology is adopted, the block chain system applied to the urban rail transit system is built on a cloud computing server, virtualization of block chain resources on a cloud platform is achieved, and physical resources are fully and effectively utilized under the condition that original functions of the block chain are not lost.
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