基于无线局域网的移动视频监控系统(The Mobile Vi

The Mobile Video Surveillance System Based On Wireless LAN

This paper proposes a design scheme of mobile video surveillance system based on

wireless LAN (WLAN), the overall system architecture and key technologies

introduced. The operating principle, process and realization of several modules are

described in detail, such as video capturing, video reproducing, video wireless

transmitting, video playing on the mobile terminals PDA, etc. IP multicast and

MPEG-4 codec techniques are used too, so the system can realize real-time video

transmission in the way of from one point to many.

Keywords: Wireless LAN; Video surveillance; Video data transmission; IP multicastWith the continuously development of the intelligent community, the community’s supervision and services

based on electron, information and network technologies will be gradually improved and the safety and

protection system of the community is an indispensable part. But the conventional secure surveillance

systems are all in the form of cable television, so the security personnel must observe the environment

constantly in the center monitoring station. That brings to much inconvenience. Wireless

communication technologies provide the flexibility and mobility requirements essential for future

surveillance. The advance of wireless network technology will make wireless LAN (WLAN) applied

widely in the field of safety. The paper proposes a design scheme of mobile video surveillance system

based on WLAN, surveillance personnel via mobile terminal Pocket PC or PDA-like devices could observe

one or more sites everywhere in the WLAN coverage, at the same time he could control the cameradevice’s move and focus to chose and orient key observing object and range. In this way security

personnel could rush to the accident site in time, thus the surveillance strength and work efficiency both are

improved.