Research And Development Of Key Technologies Of Vehicle Active Safety Video Monitoring System Platform

The active safety and intelligent prevention and control system of road transportation vehicles is based on the traditional vehicle satellite positioning and onboard video surveillance.Based on dynamic video,on the one hand,it realizes the identification and early warning of dangerous driving states(DSM)such as physiological fatigue driving,smoking and making calls,on the other hand,it realizes advanced auxiliary driving systems such as forward collision and lane departure and other abnormal driving conditions(ADAS)function.Among them,the remote monitoring platform is responsible for vehicle-mounted intelligent terminal positioning,video and various alarm information reception,warning,visual display,and realizes the playback and statistical analysis of various types of information,as well as the information interaction with the terminal.In the face of concurrent interaction with multimedia data from a large number of in-vehicle terminals and concurrent access by a large number of users,the platform needs the support of key technologies such as high-performance real-time communication,massive audio and video alarm attachment reception,and plug-in-free video playback;Aiming at the problem of receiving and real-time alarming of massive alarm attachments,an alarm attachment communication server based on C / S architecture is constructed to realize active security alarm data analysis,alarm message push and alarm attachment processing;Aiming at the problem of no plug-in playback of vehicle real-time video monitoring webpages,a video processing server based on C / S architecture was constructed to analyze the load audio and video code stream data packets uploaded by the active security terminal and push the stream to the RTMP server built on Nginx HTML5 technology for real-time playback without plug-ins.Based on the realization of the above key technologies,in accordance with relevant technical standards,the vehicle active safety video surveillance system platform is developed: First,the software engineering thinking method is used to analyze the requirements of the system platform,and on this basis,the overall design of the system platform design and development principles and system architecture is designed;Secondly,in terms of detailed design,the database design follows a standardized design method and partitions the dynamic data tables in the system platform to improve the performance and maintainability of data queries;Finally,the system platform functions are designed and programmed,and a large number of functional tests and performance tests are performed on each module.The test results show that the implemented key technology meets the platform operation requirements,and each function module of the platform runs stably.At present,the system platform has been put into trial operation,and has achieved good results in vehicle monitoring and management,transportation safety,etc.