基于区块链的铁路工程施工安全监测数据共享关键技术研究

doi:10.11959/j.issn.1000-436x.2021076

Abstract

Abstract:

In order to solve the problems that the monitoring data was easy to be tampered with in the process of railway engineering construction safety monitoring, and the authenticity of the data might be questioned during the accountability of accidents, a blockchain-based railway engineering construction safety monitoring data sharing model was proposed.The characteristics of automatic execution of smart contracts ensured the transparency of the process of monitoring data on the chain.In the PBFT algorithm, there was a problem that the Byzantine nodes and the normal nodes were selected as the master node with the same probability, a reputation-based practical Byzantine fault tolerance algorithm was proposed.Streaming data on the chain might cause network congestion, which simplified the consensus protocol and reduced the time complexity from O(n²) to O(n).A comparative experiment was conducted using Hyperledger Caliper to prove that the delay of the improved algorithm is lower than PBFT algorithm, and the throughput is higher than PBFT algorithm.A quantitative analysis of the possibility of attack and the probability of successful attack was carried out, and it was determined that the smart contract provides tamper-proof modification for the monitoring data on the chain.Comparative analysis proves that the proposed blockchain-based railway engineering construction safety monitoring data sharing model is good than other models in terms of consensus efficiency, TPS and block generation speed.

Key words: railway engineering construction, blockchain, RPBFT, smart contract, safe sharing

CLC Number:

TP311

Yuhong LIU, Liang YANG, Chunhui PIAO, Zhiguo ZHANG. Research on key technologies of safety monitoring data sharing for railway engineering construction based on blockchain[J]. Journal on Communications, 2021, 42(8): 206-216.

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References 22

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研究工作	共识机制	共识效率	吞吐量	区块生成速度	算力需求
基于区块链的铁路数据汇集共享系统^[8]	PBFT	低	低	慢	高
基于区块链和DRL的安全数据共享方案^[21]	Paxos/PBFT	低	低	慢	高
双链结构的数据共享区块链模型^[22]	DPCC	高	中	快	中
基于区块链的铁路工程施工安全监测数据共享模型	RPBFT	高	高	快	中

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