Creating Web-based Laboratories
Covers the transmission of real-time video and audio for internet experimentation.\ Provides detailed descriptions of how the various hardware and software systems can be seamlessly integrated for a complete internet remote experimentation system.\ Contains examples of real working experiments that are currently running.
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Remote web-based experimentation, enabling students and researchers to access the laboratory anytime via the Internet, is becoming an increasingly attractive way to complement or even replace traditional laboratory sessions. Placing a video camera & microphone before the equipment and apparatus to capture what is actually happening in the laboratory allows the images and audio data to be streamed to the client side. Researchers in different countries can share equipment and conduct research cooperatively and remotely. The authors summarise their research and discuss the development of the 5 web-based laboratories launched from the National University of Singapore. The principles, structure, and technologies required for the creation of Internet remote experimentation systems are discussed with particular emphasis on the integration of hardware and software systems. Also highlighted is the design and development of interfaces and components for use in typical web-based laboratories or similar web-control applications.
1Introduction12Server and client213Client GUI design394Components515Panels716Interface cards977Audio and video1198Controlling physical systems1479Multicast design16710An implementation example183App. ASource codes for camera control201App. BSources codes for interface design207App. CSource codes for coupled-tank control289
