6LoWPAN Based Industrial Wireless Monitoring Network Protocol Design And Implementation

Under the background of fast development of Industrial Cyber-physical systems(ICPSs),the development of Industrial Internet of Things(IIOT)has aroused the attention of standardization organizations,academia,and industry and at home and abroad,which plays a significant role In industrial monitoring network.In the wireless network,it consists of a large number of wireless sensors and actuators,which are easily affected by the complex electromagnetic environment in the industrial field.How to improve the wireless energy efficiency and transmission reliability are urgent problems to be solved.In the wireless network,it consists of a large number of wireless sensors and actuators,which are easily affected by the complex electromagnetic environment in the industrial field.How to improve the wireless energy efficiency and transmission reliability are urgent problems to be solved.IPv6 over Low-Power Wireless Personal Area Network(6LoWPAN)can overcome the traditional IP protocol memory and bandwidth requirements and it is suitable for industrial wireless monitoring network.This paper focuses on the energy efficiency and reliability of industrial wireless monitoring network based on 6LoWPAN,and has achieved the following research results:First of all,for the 6LoWPAN,we propose a cross-layer design for energy-efficiency and Delivery Reliability(CDER)based on the packet length of the MAC layer protocol and the energy balance based routing algorithm to solve the problem of large scale,limited energy supply and equipment access to the Internet.The CDER algorithm overcomes the traditional problems of reduced energy consumption(such as energy-balanced routing algorithms,clustering routing problems,etc.): Only the data link layer or the network layer is considered for energy consumption and the IP network can not be well supported.Simulation was performed in the WSNet and Contiki systems.The impact of these metrics on system performance was tested through numerous simulations and experiments as well as evaluating the effectiveness of our cross-layer design algorithms.Experimental results show that our CDER algorithm improves the energy efficiency and reduces the system energy consumption based on the guarantee of transmission reliability.Secondly,considering the impact and limitations of the data link layer interference,slot scheduling and routing,we propose a cross-layer solution of parameter sharing,COD(Cross Layer Optimize Design),to solve the industrial monitoring of wireless networks Reliability issues.This paper involves the scenario that includes single-channel multi-mesh network structure with interference.Determination of link interference and reliable sets,the slot assignment and routing assignment are carried out.The redundancy is the optimization objective to obtain the optimal solution.Then the optimal parameters are interacted with 6LoWPAN stack to ensure system and transmission reliability.The simulation in Tinyos shows the effectiveness of this method.Finally,this paper constructs an industrial network protocol development platform based on 6LoWPAN.According to the monitoring demands of the monitoring system,a modular hardware design board was developed.After using CSMA,TDMA and IPv6 routing protoco for lowpower and lossy network(RPL)and other key technologies to achieve the MAC layer and routing layer protocol.With this experimental platform,the feasibility and effectiveness of CDER algorithm and COD solution were verified.The experimental results show that our algorithm CDER improves the energy efficiency based on the transmission reliability and the solution of COD effectively ensures the reliability of the wireless monitoring network.