| TV OBVAN is one mobile production system for TV program;its manufacture carrier is often taken by the automobile.As one important tool to record and live broadcast TV program,TV OBVAN plays a very important role in the production process for TV program.Along with 2008 Beijing Olympic Games' fast arrival,many domestic TV Stations are making their digital TV OBVAN,so the design and manufacture of TV OBVAN system has become one hot spot topic.Joins with the design and the manufacture of Bengbu TV station 8 Camera OBVAN project,according to the present actual demand in the TV production domain,in contrast with international different characteristic from the integration of TV broadcast equipments,the thesis puts forward the present design principle and technical specification of TV OBVAN system.The project was integrated,made and tested by specialist.Its performance and index meet the demand of design.At last,TV OBVAN is used successfully.The thesis elaborates:the design of bodywork,power supply and lighting system,air conditioning system,video and audio and communication system,the emergency design of various systems,system expansion and interface,system synthesis etc.In each design process,the scheme had been comparatively chosen, calculated,analyzed and tested.Finally,it also proposes some advices that the TV OBVAN system will need to be improved and consummated in future.A series of crucial technical questions have been resolved in the system design:The method of strengthening and lightweight in vehicle body;The counterweight and layout in vehicle body;Direct current inverter system in vehicle;Assistant and alarm test system;Air conditioning and air flue; Primary,auxiliary channel and emergency switcher in Video system;Synchro problem in mixed condition;Special matching matrix on camera controlling; Tel and GSM mix in audio matrix and mixer;The multi-OBVAN connection and one level cut in switcher;The exchange function in IT worktable;Equipments' network management in vehicles;and so on. |
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