Real-Time Multimedia Data Acquisition Protocol for Industrial Applications

In this paper the design and implementation of Real Time Multimedia Data Acquisition protocol (RTMDAP)for industrial applications is presented. The intended use of this protocol is factory environment, where theremote supervision and control of the devices (sensors, actuators) are important tasks. During controlactivities data is in shape of text strings and in some cases, symbols representing device state. Factory hasmany equipments like robots, Numerical Controlled Machines, Vision, Image processing and controllers forachieving the better quality, part tracking, and assembly. By deployment of multimedia applications at plantlevel factory can perform all above mentioned tasks effectively. RTMDAP extends common networkcommunications facilities into the scope of real time data acquisition. RTMDAP (The Real Time MultimediaData Acquisition Protocol) is based on Switched Ethernet 100 Mbps. TCP/IP and RTP Protocols areemployed in the RTMDAP along with UDP with acknowledgement mechanism so that better reliability canbe achieved. Well-established and widely used compression techniques H.263, JPEG are also used in theRTMDAP and timely data is. Both the design and implementation are presented together with results of frommeasurements on a prototype of the protocol. Sampling rate in case of JPEG (live video) from 41.383 to151.492 packets per second are obtained for various resolutions and in case of H.263 (live video) samplingrate is achieved from 10.53 to 12.374 packets per second with low resolutions. Significant contribution is todeploy the video compression in the factory environment. Well established widely supported videocompression techniques H.263 and MJPEG are included in the protocol. The protocol performs the capturingof video through webcam (live)