Design And Implementation Of The Elevator Audio And Video Linkage System Based On Visual C++

With the further development of China’s sustained economic growth, urbanization and the real estate industry, living area, large shopping malls and other high-rise buildings and public spaces of continuous investment, elevator market demand rapid growth, the elevator as the main transportation tool in the buildings, has become a indispensable part of our daily life. At the same time, because of the frequent operation of the elevator, frequently fault stop and fault trapped people and other accidents, the security environment has been paid more and more attention, how to effective technical means, the timely detection of failures, quickly to rescue the trapped personnel, the realization of elevator safety monitoring is of remarkable significance.It designs a set of elevator high resolution audio and video linkage system, solve the remote monitoring equipment and real-time intercom, on one hand, can run environmental monitoring equipment, monitoring personnel access, provide some utility for security; on the other hand, the real-time audio dialogue, the command center will be the first time that the elevator accident, facilitate rapid rescue trapped personnel. The system uses the DirectShow structure, to achieve real-time video transmission through the RTP/RTCP protocol and UDP protocol, realize the identification and control of network equipment through TCP/IP protocol. Real time data acquisition in the elevator video data, through the H.264 video compression technology, video data storage and effective implementation of video playback, when receives the alarm information of the client on a elevator fault, open voice intercom function, the alarm linkage video, without the need for through the voice intercom, and transfer the corresponding video equipment manual acquisition, greatly shorten the rescue trapped passengers time, timely understanding of fault site. To provide a good environment for the rescue personnel and rescue.It introduces the DirectShow technology, the RTP/RTCP real-time transmission protocol and H.264 video compression theory, focus on how to effectively combine the three technologies, real-time video transmission effectively in high quality, realize the audio and video data linkage, effectively ensure the audio and video data fault in elevator synchronous, timely grasp the fault site conditions, to assist in the rescue work.