Yuan Yifeng

The research and implement of smart home system based on Internet of Things

With the rapid development of Internet of Things, smart home which regarded as one of the main application domains, obtained more and more peoples attention. In this paper, the characteristics and disadvantages of smart home system are analyzed. Then a smart home system based on B/S(Browse/Server) module is introduced. Through publishing the household wireless sensor network data to the web page of a remote server, users can control the household devices conveniently and remotely. Its system architecture, hardware design and implementation approach are given. This system provides a more flexible and more convenient control for smart home system and is beneficial for the popularity and promotion of smart home system.

Distributed formation control for a multi-agent system with dynamic and static obstacle avoidances

Formation control and obstacle avoidance for multi-agent systems have attracted more and more attention. In this paper, the problems of formation control and obstacle avoidance are investigated by means of a consensus algorithm. A novel distributed control model is proposed for the multi-agent system to form the anticipated formation as well as achieve obstacle avoidance. Based on the consensus algorithm, a distributed control function consisting of three terms (formation control term, velocity matching term, and obstacle avoidance term) is presented. By establishing a novel formation control matrix, a formation control term is constructed such that the agents can converge to consensus and reach the anticipated formation. A new obstacle avoidance function is developed by using the modified potential field approach to make sure that obstacle avoidance can be achieved whether the obstacle is in a dynamic state or a stationary state. A velocity matching term is also put forward to guarantee that the velocities of all agents converge to the same value. Furthermore, stability of the control model is proven. Simulation results are provided to demonstrate the effectiveness of the proposed control.

Research on terminal cooperation in ubiquitous network

Terminal cooperation can make up for the deficiency of single terminal in perception, communication, computing, service presentation and other aspects. This paper enumerates typical application scenarios of terminal cooperation in ubiquitous network, and key tecnologies in terminal environment need to be studied are also analyzed. Following that, a framework of terminal middleware is put forward, including service demand processing, service discovery, context-aware, data processing, cooperation control, safety control and other functional components. Finally, based on the above method, we have developed a terminal cooperation application system, which demonstrates the cooperative downloading of multimedia files.