Design And Implementation Of Audio And Video Scheduling Platform Of Image Center For Public Security

The world economy today is experiencing high downward pressure,and the international political architecture is going through profound changes,in which are a lot of chaotic phenomena;domestic economic and social development are at critical period of speed shift,structural adjustment and power conversion,the social security situation is complicated,anti-terrorism situation is grim and group events occurs repeatedly.In the face of the complex and changing international and domestic situation,the public security organs are facing a variety of predictable and unforeseen risks and challenges.As the public security audio and video resources convergent center,scheduling hub and management core of the provincial public security image control center of province,how to build a systematic and information-based provincial public security image control center video scheduling platform to solve the"last mile problem" of audio and video scheduling service,providing convenient and fast,efficient and reliable audio and video scheduling services for police work like command and dispatch,intelligence consultation,case study and executive conference,etc.are a big problem for public security organs to solve.Based on the background of provincial public security audio and video scheduling support,the problem was solved with the idea of business standardization,systematic support and functional integration,then thoroughly summarized the existing problems in the scheduling and support of traditional audio and video,thoroughly analyzed the business requirements,work flow and resource elements of information upgrading of multimedia communication equipment system,such as optical fiber video matrix,composite video matrix,digital audio processor,central controller,multi-image processor,multi-format seamless switcher,large display screen,etc.the hardware functional constraints of single communication equipment was evaded successfully,all kinds of basic functions of audio and video scheduling platform were designed logically,at the same time,according to different police actual combat conditions and application scenarios,the platform can also quickly generate a variety of extended function modules as required,then various problems existing in the audio and video scheduling support work of the public security image control center were solved thoroughly.The platform adopts C/S structure and WWS-based technology architecture,applying programming tools,such as Visual studio 2013 development platform,C#language and mysql 6.0 database,etc.to design and implement basic function like video preview,video switching,large screen scheduling,audio processing,notification capture,picture division,seamless switching,image polling,video and audio recording,PTZ control,and system management,etc.And expandable function modules like unattended operation,emergency security,video conference,etc.Through testing and online operation,the results show that the platform's function is perfect,performance is reliable and operation is convenient,meets all design requirements and users' needs.