Efficient Heterogeneous Vibrating Wire IoT System For SDN

The Internet of Things is a hotspot of current research and development,but the Internet of Things system has problems such as complex protocols,poor scalability,and lack of network management mechanisms due to the connection of various sensors,which limits the application of the Internet of Things system.Therefore,it is necessary to study and design a new type of Internet of Things system.First of all,based on the analysis of the existing problems in the current Io T system,this paper gives an efficient SDN-oriented SDN-oriented system structure for vibrating wire Io T,and introduces the main modules contained therein.Secondly,in view of the poor scalability of the current Io T system,an extension mechanism of vibrating wire Io T is proposed,an algorithm based on automatic scanning multi-channel and an Io T communication mechanism based on MQTT protocol are designed,and STM32 is used as the main control MCU and ULN2803 Octal Darlington Transistor Array Drive Relay Group,implemented a prototype system,tested and verified,the test results show that the designed vibrating wire Io T expansion mechanism can achieve multi-channel multiplexing in transmission,reduce design costs,and have Features such as high communication efficiency.And then,in view of the problem of multiple protocols in the current Internet of Things system,cross-protocol interoperability and load balancing strategies are proposed.A protocol conversion mechanism based on error code mapping and a load balancing strategy based on reverse proxy are designed to effectively implement MQTT.Interoperate with CoAP and distribute task load;and implement a system prototype,tested and verified,the test results show that the designed cross-protocol interoperability and load balancing strategy can solve the interoperability problem between MQTT and CoAP protocol,Reduce the time overhead by 38%,and improve the execution efficiency of Io T tasks.Finally,the SDN-oriented efficient heterogeneous vibrating wire Internet of Things prototype was implemented,and the implementation of mapping-based protocol conversion module,reverse proxy-based load balancing module and SDN-based communication module was given,and tested and verified.It is verified that the prototype system can effectively improve the cross-protocol and cross-platform capabilities of the vibrating wire Io T system,and improve the efficiency of task processing.