1. Sentient Computing Presenter : Alhaf malik.K Syed Ammal Engineering College, Ramanathapuram.

2. Sentient computing is a form of ubiguitous computing which uses sensors to perceive its environment and react accordingly… Sentient computing is a form of ubiguitous computing which uses sensors to perceive its environment and react accordingly…  Goals: build Sentient Spaces = computerised environments that sense & react close gap between user and computer by using context make ubiquitous computing reality through Sentient Computing  Ubiquitous Computing: Includes pervasive tech,calm tech,things that thing,everyware,pervasive internet Literaly visible effectievly invisible

3.  Sensors  Active badges: Auotomobiles,machines,aerospace,industry,robotics… Identity+room level+button Label,infra red beacon,receiver in room Tech limited acces through doors Computer terminal adopts your settings by “teleporting”  Infra red location: 15 meters range diffuse Room scale accuracy 95% of time containment

4.  Proximity: active badges User/object wears badge Badge emits id over IR IR doesn’t penetrate walls  Active bat: Low power,wireless,indoor location system accurate upto 3 cm It requires minimum of three reference nodes for calculating distance  Bat System Light weight wearable devices contain 433mhz radio transceiver, ultrasonic transducer,battery Goal is to propagation of ultrasound from a bat to its local receiver to determine bat’s position

5.  System principles: Bat & system is connect to sensor network communicate using radio channel Each bat have 2 transducers pointing in different directions to create ultrasonic emission in wearer  Power: Achived through dynamic positioning update rate, ket to present motion of bat,sensed using jitter switch Maximum updation rate is 15 Hz  Accuracy: Accuracy of 3cm,95% of time of time is achieved Reflection from smooth surface,corner of room result in worst result

6.  Spatial Indexing Based on programming space Events triggered by interaction between tracked entities & pre-defined space Interaction with system done by spatial buttons  Spatial database: Index section consist of global & street atlas commonly contains list of named features(towns,streets etc..) Also include identifiers and database named by feature name  Features of spatial data bases: It includes spatial index to speed up database operation It includes queries such as…. Spatial Measurements: distance between points,polygon area… Spatial function:Modifying existing features to create new ones Spatial Predicates: Allows true/false queries (is there residence located within a miles)

7.  Trilateration: Finding relative position of objects using geometry of triangles like as triangulation For 2d plane using tilateration generally requires 3 reference nodes  GPS: It is type of sentient computing includes 24 satellites For navigation,military,map making, surveying …etc  VNC(Virtual network computer): RFB (Remote frame buffer)protocol to remotely control another computer Platform independent Acessing files on one’s work computer from one’s home computer Devoloped at AT&T

8.  Under Research….. Grid-based spatial indexes allocation of relevant objects to their position in grind Grid cell identifiers for rapid acess Old method data driven approach(data dependent mathod) Recent space driven approach Data distribution Automatic control of environment without user intervention Mobile Eye How mobile comm.. And services can be enriched by adding context awareness to them We can view the world using camera mobile Project going in EMI^2(Environment to mobile intelligent interaction)

9. MobileEye Concept mobile mobile

10. Applications: Opening and closing doors automatically A textual indication of where someone is, how fast the are moving, how long they have been there Showing the local context, including who and what else is nearby Personalization by teleporting VNC desktops Surveillance applications which the selection of a particular camera is based on spatial data

11. Applications: Opening and closing doors automatically A textual indication of where someone is, how fast the are moving, how long they have been there Showing the local context, including who and what else is nearby Personalization by teleporting VNC desktops Surveillance applications which the selection of a particular camera is based on spatial data

12. Thank you, any question?