Skinput

ABSTRACT

Skinput is an input technology that uses bio-acoustics sensing to localize finger taps on the skin. When augmented with a pico projector, the device can provide a direct manipulation, graphical user interface on the body. The technology was developed by Chris Harrison, Desney Tan and Dan Morris at Microsoft Research’s Computational User experience Group.

Skinput represents one way to decouple input from electronic devices with the aim of allowing devices to become smaller without simultaneously shrinking the surface area on which input can be performed. While other systems, like Sixth sense have attempted this with computer vision, Skinput employs acoustics, which take the advantage of the human body’s natural sound conductive properties. This allows the body to be annexed as an input surface without the need for the skin to be invasively instrumented with sensors, tracking, markers, or other items.

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Wearable Health Care System on Textile Platform

ABSTRACT

A comfortable health monitoring system is based on a wearable interface implemented by integrating fabric sensors, advanced signal processing techniques and modern telecommunication systems, on a textile platform. Conducting and piezoresistive materials in form of fiber and yarn are integrated in a garment and used as sensors, connectors and electrode elements. Simultaneous recording of vital signs allows extrapolation of more complex parameters and inter-signal elaboration that contribute to produce alert message and synoptic patient table. The system is designed to be minimally invasive, comfortable and wearable, where the knitted fabric sensors and electrodes are distributed and connected to an electronic portable unit, the acquired signals can then be transmitted to a monitoring system.

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Unified Theory of Electrification in Natural Processes

ABSTRACT

Electrification in natural processes is explained by photochemical reactions initiated by electromagnetic (EM) radiation induced in nanoparticles (NPs) by quantum electrodynamics (QED). The NPs ubiquitous to natural processes produce EM radiation depending on the thermal kT of atoms that at ambient temperature is emitted in the far infrared (FIR). However, EM radiation at vacuum ultraviolet (VUV) levels is required to initiate photochemical reactions, and therefore a mechanism is required to increase the frequency from the FIR to VUV levels – the mechanism called QED induced EM radiation. How the NPs form depends on the specific natural process, but all processes are unified by the VUV radiation induced in NPs by QED. For example, static electricity comprising positive and negative charges is produced from VUV induced in NPs that form in the rubbing of dissimilar solids, atmospheric electricity is produced by hydronium and hydroxyl ions from VUV induced in ice NPs as water vapor freezes at high altitudes, and flow electricity is produced by cations and electrons from VUV induced in NPs that form as clusters in turbulence. Prior applications of QED induced EM radiation were based on the EM confinement of FIR radiation in nanovoids (NVs) – bubbles in liquids and gaps in solids. But difficulties with NVs in this regard led to the conclusion that NPs whether liquid or solid are the most likely EM confinement of FIR radiation in natural processes. Compared to NVs, NPs assure EM confinement of FIR radiation to allow frequency up-conversion to VUV levels. Electrification first occurs at the instant the NPs form as the thermal kT energy of the atoms forming the NP is released in a burst of VUV radiation. Steady VUV is then produced as the NP recovers the thermal kT energy lost in the burst from blackbody (BB) radiation in the ambient surroundings. Either way, FIR radiation from the atoms within the NP is suppressed by QED because the FIR frequency is lower than the EM confinement frequency of NPs. To conserve EM energy, QED requires the kT energy loss corresponding to the suppressed IR radiation to be gained at the EM confinement frequency of the NP – typically in the VUV. In this way, the NPs produce the VUV radiation that by photochemical reaction with chemical species to produce charge in natural processes.

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Haptics

ABSTRACT

‘Haptics’ is a technology that adds the sense of touch to virtual environments. Users are given the illusion that they are touching or manipulating a real physical object.
This seminar discusses the important concepts in haptics, some of the most commonly used haptics systems like ‘Phantom’, ‘Cyberglove’, ‘Novint Falcon’ and such similar devices. Following this, a description about how sensors and actuators are used for tracking the position and movement of the haptic systems, is provided.
The different types of force rendering algorithms are discussed next. The seminar explains the blocks in force rendering. Then a few applications of haptic systems are taken up for discussion.

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