Design Of A Home Wireless Video Surveillance Platform

With the rapid development of video surveillance technology, streaming media technology as well as wireless networks, wireless video surveillance is gradually moving into the ordinary families. In order to meet the needs of that the majority of users can use smart phones to monitor the house situation anywhere and anytime,home wireless video surveillance system emerge at the right moment.Based on the analysis of significance of home video surveillance system, research status and development trend, the paper proposes a home wireless video surveillance platform.The system consists of video capture clients, servers and video players. The video capture client is designed based on the Android platform. It utilizes Camera method to realize video capture, the FFmpeg encoding library to implement H.264 format video encoding. The PTZ control unit is designed based on the free GPIO ports of video capture board. A SCM and a 232/485 interchange interface is used to carry on the signal transformation. The server unit consists of a streaming server, a database server and a Web server. The streaming server is designed based on the Live555 open source project. The original data source of the Live555 is modified for real time transmission. The video data from capture clients is forwarded by the streaming server to replay clients and stored in the local server in real-time. Data transmission between a server and a client uses Socket method, meanwhile. The multi-thread method is used so that several capture clinets can access the server unit in the same time.Test results are given at the end of the paper for showing the design being success.