Iot Intelligent Gateway Design And Prototype System Implementation

Along with society progress, multi-faced connection has become the main technology trend. The internet of things (IOT), so called next generation internet, has attracted more and more attention in a lot countries and businesses. IOT is composed of different wireless sensor networks, telecommunication transmit network and internet. Nowadays, video data occupy considerably ratio internet bandwidth, after the IOT coming, there will be more video data from sensor networks go into internet, then internet’s bandwidth and processing ability would face huge challenges. IOT gateway that responsible for connect sensor networks and internet, if it has the ability to process video data, would greatly reduce the bandwidth and network process stress.Firstly, this paper researched deeply on the four layers of IOT, perception layer, network layer, support layer and application layer. The research content includes key technologies, core functions and gateway’s role in these layers. Secondly, this paper detailed study the network structure of sensor network and the composition of sensor network nodes. From the view of sensor network, sum up the hierarchical structure of IOT gateway.Then, this paper research deeply on various CPUs, video process chip, software system and boot loader of embedded environment, and select ARM as main CPU, adv7183as video process chip, Linux as software system and u-boot as boot loader. Carry out detailed study on these selected technologies to implement the IOT gateway prototype system.After implement the prototype system, for the paricular application requirement, design and implement some image processing algorithms which could be applied in prototype system. And base on these algorithms, implement corresponding software. Through running test, the prototype system has done image processing tasks perfectly.