Research On Real-time Trigger Technology Of Home Internet Of Things User Policy For IFTTT Platform

In recent years,with the rapid development of the home Internet of Things(H-Io T)industry,IFTTT has become the most widely used H-Io T platform because of its comprehensive support for equipment and services,but its delay in implementing user policies has been widely criticized.Literature shows that the delay of IFTTT strategy is as high as 15 minutes.This is because IFTTT platform adopts polling mechanism with long time interval instead of real-time push mechanism when judging whether the trigger conditions of user policies are met.At present,there are few researches on the solution to the delay problem of IFTTT platform,so the research on this problem has important application value.In this thesis,the real-time trigger technology of user policy for hybrid ecological H-Io T platform represented by IFTTT is studied.Firstly,real-time identification of equipment behavior is carried out through local traffic analysis,and whether the policy trigger event occurs is judged.Then,the local recognition results are actively and indirectly pushed to IFTTT through Webhook technology,thus triggering the rapid execution of policy linkage events.The specific research work includes the following three aspects:(1)We study the real-time identification technology of device behavior based on traffic analysis.Firstly,through natural language processing technology,he actionable behavior list is extracted and summarized from multiple sources of H-Io T device behavior description;Then,summarize and infer the traffic characteristic law of device behavior and construct the equipment behavior characteristic table;Then,match and identify the equipment behavior traffic generated in real time with reference to the behavior characteristic table;Finally,through the experiment,the offline device traffic data packet files are evaluated and analyzed,and the optimal backtracking queue window length and waiting time threshold for real-time identification of each device are obtained,which verifies the feasibility and effectiveness of the scheme.(2)We study the real-time trigger technology of user policy based on IFTTT platform.Firstly,the existing user policies of IFTTT are acquired and analyzed,and the behavior recognition results are associated with policy triggering events,and the trigger conditions of user policies are defined.Secondly,by simulating the user's operation process,the Webhook replacement strategy with the same linkage event is automatically constructed,and the user's existing strategy is managed offline or recycled.At the same time,combined with the real-time recognition results of equipment behavior,the replacement strategy is triggered synchronously to realize the rapid execution of linkage events;Thirdly,the full connectivity scheme of H-Io T platform based on Webhook is proposed to realize the interconnection and intercommunication of larger-scale devices.Finally,in the practical application environment,the execution time of several strategies is counted and compared,and the results show that the average delay of the strategies is reduced by about 144 s.(3)Based on the above research results,a prototype system of H-Io T real-time trigger service for IFTTT is designed and implemented,which includes four modules.Among them,the behavior feature table construction module mainly completes the construction of equipment behavior feature table,which provides recognition basis for real-time analysis;Applets analysis and management module mainly completes the construction of Webhook event policy that can identify device behavior,and provides an interface for real-time triggering services.The realtime service module identifies the equipment behavior in real time through the data packet traffic generated by the equipment,realizes the timely triggering of relevant user policies,and undertakes the core functions of the system;The visual interface displays the recognition results and provides user interaction management functions.In summary,the real-time identification technology of device behavior based on traffic analysis and the real-time trigger technology of user policies based on IFTTT platform,and designs and implements the real-time trigger service prototype system of H-Io T for IFTTT have been studied in this thesis.It solves the problem of execution delay of user policies based on state change of H-Io T device as trigger event in the hybrid ecological H-Io T platform represented by IFTTT.It provides a real-time interactive technology of H-Io T,which is implemented only on the user side without changing the existing equipment side and platform side.At the same time,it can provide a real and effective reference scheme for IFTTT to reduce user policy delay and has guiding significance for other Io T scenarios.