Research And Implementation Of Video And Audio Transmission System Used For Remote Health Diagnosis

With the extensive application of advanced information technology in domesticlarge equipment manufacturing, the maintenance of the equipment is facing more andmore difficulties, including the requirements for high technology and morecomplexity. In order to address the urgent need of large equipment support technology,remote health diagnosis technology is highly valued in large equipment and domesticdevice area. Modern remote health diagnosing system will be widely employed in themaintenance and support of civil aircrafts and vessels, thus it will make a bigdifference in increasing the efficiency of information equipments. However, since thediagnosing process has a high requirement of the audio and video data of the scene,the current remote system does not supply this function and still keeps in urgentrequirement of effective auxiliary monitoring system.The audio and video transmission system studied in this thesis can nicely makeup this shortfall, can fill the gap of domestic aircrafts’ fault monitoring and diagnosingsystem in audio and video monitoring, can assist and guarantee the remote supportprocess effectively. So it’s of great significance. Besides, the software and hardwareof most current audio and video transmission systems which are defined andencapsulated by manufacturers could not be flexibly applied at different parametersand environments, so they are limited in application compatibility and expansibility.In order to solve this problem, we propose a practical audio and video transmissionsystem design and implementation based on LabWindows/CVI platform, which canensure the application compatibility and expansibility of audio and video front-endsystem in remote health diagnosing for large equipments.This system can realize real-time interaction by instant message based onDataSocket technology, can realize real-time acquiring of audio and video data,alsocan realize data compression effectively by using the combination of mpeg-4andh.263standard.More importantly, this system can realize real-time transmission basedon WinSock technology, thus it could meet the requirements of remote support systemfor field data greatly. Experiments show that the system realized in this thesis has aflexible data acquisition method and good real-time performance. Also, this systemworks steadily and can be used for remote health monitoring and diagnosing directly.