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Robotics has endeavored into every field where humans require assistance in terms of speed, strength, safety and security. To operate inside confined spaces is a challenge. In built-up areas, confined spaces include operation inside buildings, passage through doors, negotiating obstacles along with staircases and ramps, furthermore it includes, places inside public transport facilities like railway coaches and aircrafts. This work involves design of a platform for surveillance and to provide approach inside confined spaces. The platform is named Confined Space Remotely Operated Vehicle (CSROV) and it is an electrically operated tracked vehicle. The advantages of this design and potential of applications of this platform are discussed.

With the latest innovations in the field of digital computing, communication and interconnecting technology, a new and of its own type of pervasive physical-digital ecosystem has started to emerge and in future it will be more ubiquitous, more dominant, more potent, more useful, more helpful, more usable. Finally, it will emerge as inevitable and indispensable part of our mundane interaction environment and everyday lifestyle experience. The designers, developers and practitioners of human-system interaction design have got a vital role to play in this transformation. The system development life cycle is the fundamental iterative reference cycle that specifies how to design and develop such technological systems. This work first focuses on those aspects which are of most significance from point of view of human-human concerns mediated by human-system interaction and are not appropriately addressed by canonical interaction-system development life cycle. This work then extends it along with specifying the realizing methodologies, in order to broaden the scope of the canonical system development life cycle to fulfil the present and future requisites in relation to people's interaction with the totality of ubiquitous environment in all respects. General TermsSoftware system development life cycle (SDLC). Humancomputer interaction. KeywordsSoftware development life cycle, Ubiquitous computing, Human-system interaction (HSI).

Manipulator on mobile platform having multiple degrees of freedom performing variety of tasks can be seen in field of education, research and military applications. It is imperative to use these manipulators for only limited workspace for which either these are designed or for such applications in which solutions can be achieved in given workspace of manipulator. Mobile platforms carrying a versatile manipulator onto it are finding place in armory of armed forces worldwide. This paper presents unique design of manipulator arm for confined spaces with 5 DOF. Manipulator arm designed in such a way that extraction of suspected items can be carried out from places like railway compartment and aircraft cabin. Some features which make this manipulator distinguished in class are compact design and lightweight. A two stage linear actuator is designed for this manipulator to enhance vertical reach. In this paper design of the manipulator, selection of actuators along with prime movers, kinematic analysis and stance evaluation are discussed.