Research On Real-time Transmission Algorithm In Energy-constrained Manufacturing Of Internet Of Things

The network features of manufacturing internet of things include network covering the whole manufacturing process, wired and wireless networks coexist, various sensors, driver and execute nodes coexist, sensor nodes can be deployed randomly, objects move dynamically and channel availability changed dynamically. These lead to the peer to peer delay is difficult to predict and hard to judge the status of real-time network. So the problem of real-time data transmission in manufacturing internet of things have been put forward.In this paper, the problem of data real time transmission in the network is studied for the formation of the sensor nodes which is the energy limited of the manufacturing internet of things. The real-time transmission means that choose the optimal congestion and the best real-time performance route for data transmission according to congestion status of the multiple paths of the base station to the cluster head. To achieve real-time transmission of data, on the one hand, the need to establish a network topology stability, due to the sensor nodes is energy-constrained, the node may die for energy consumption excessively and result in the network topology change, and it will influence the data cannot transfer phenomenon. On the other hand, in the topology of the network is stable under the premise, the existence of multiple paths between cluster head and base station, if you choose the path of more severe congestion will affect the real-time of data transmission. To achieve real-time data transmission problems of manufacturing internet of things the key is how to keep the network topology stable in constrained sensor nodes and how to ensure real-time data transmission process. In view of the above problems, the main work of this paper are:(1) By analyzing the present situation and research results of manufacturing internet of things, we combine with the existing network technology to propose a network framework of manufacturing internet of things. And from the aspect of routing protocol, we analyzed the results of the cluster based routing and multi path routing, preparing for the following research.(2) According to the sensor node energy limited of manufacturing internet of things, in the process of work, due to the node energy consumption inequality lead to the change of the network topology problem. By studying the existing classical clustering routing algorithm of LEACH, the model of communication energy consumption and the model of optimal hops, in order to reduce the loss of communication networks, to maintain the stability of the network topology, proposed an energy balanced multi-hop clustering routing algorithm (EBMCR).(3) Based on the stability of the network topology, according to the path between cluster head and base station due to congestion resulting in data transmission delay problems, search multiple paths through the research on ant colony algorithm, and combined with the congestion control strategy, in order to realize the real-time transmission congestion condition, proposed a real-time transmission algorithm of multi-path based on ACO (RTM-ACO).Finally, the theoretical simulation of the proposed EBMCR algorithm and RTM-ACO algorithm, the simulation results show that the proposed algorithm is feasible and can get ideal results. These studies can be provided a basis for data real-time transmission of manufacturing internet of things, it has guide significance for practical application.