Design And Implementation Of IoT Gateway Middleware Based On OpenWRT

As IoT technology develops,IoT applications have been increasingly applied to many aspects of daily life.It's estimated that IoT will be leading the third scientific revolution tide.In the near future thousands of sensor devices will be connected to Web.Therefore,technology that how to make these devices effectively connect and manage them scientifically,which is also called IoT gateway middleware,has become a hot topic in this field.However,some problem exists in the current gateway research,such as too dependent on a certain platform,complicated sensor protocol and data format and the lack of devices sensing capability.So how to make gateway support a large range of platforms,dynamic sensing and rapidly primitive development and verification,has become the emphasis of the thesis.In order to solve above problems,a gateway middleware architecture based on OpenWRT is proposed.First,deep research on relevant basics is made,including customized development on OpenWRT,combination between OpenWRT and open source hardware,the basic conception and axiom of AllJoyn,and function of gateway middleware in the gateway system;Second,a profound design process about the middleware architecture is deeply devised by means of modular layered idea with the advantage of simplifying logic.The stable interaction between gateway and IoT platform is built in the upper layer,and sensing capability with AllJoyn in the lower layer;Finally a demonstrated project about open source hardware and WeChat is introduced to make implementations of gateway middleware based on Micro WRT platform,including cross-platform development of middleware,mechanism of device dynamic discovery and primitive system's creation and verification with the advantage of open source hardware.In the end,a test on the core functions of demonstrated project is made to prove the value of the thesis.