Wearable Computers

Amair MairajAnkush PanditKrutarth MithawallaNick MathewRaman Narayanan

What is a Wearable Computer?

Features of Wearable Computer

Consistency

Multi-tasking

Mobility

A Wearable Computer…

Wearable Computer

Key Properties

Near Transparency Continuously obtain feedback Compared daily Note if something new

Key Properties

Accuracy and Reliability vs. Cost of Operation Accuracy must be high Should be reliable Cost should be low

Key Properties

Secure Communication Privacy Authorization

Analysis Data should be recorded Suggestions to the user

Key Properties

4As Anywhere Anytime Anyone Any device

Challenges

Power use

Heat dissipation

Design and Architecture

Real-Time OS and Distributed System

Features of RTOS Scheduling Power Management Interrupt Handling

Features of DS Resource sharing Control and management

Scheduling

Scheduling Power management in wearable

computers Scheduling and power management

Voltage Scheduling

Proposed Scheduling

VOLTAGE SHIFT TIME NOT TAKEN

VOLTAGE SHIFT TIME TAKEN

Power Management

Why? Limited energy resources

Allow functionality despite scarce energy resources

Reduce power consumption by sharing tasks with other nodes

Solution

Low threshold for migration Distribute when migration occurs

without execution until energy resources fail

In case of catastrophic failures, spare node could restart execution if the hand-off signal never arrives.

Future Work

Implementation of the power management solution

Implementation of the proposed scheduling algorithm

Conclusion

Vast field combines multi-disciplines Future can involve AI & robotics

References

Marculescu, D., Zamora, N. H., Stanley-Marbell, P., and Marculescu, R. 2003. Fault-Tolerant Techniques for Ambient Intelligent Distributed Systems. In Proceedings of the 2003 IEEE/ACM International Conference on Computer-Aided Design (November 09 – 13, 2003). International Conference on Computer Aided Design. IEEE Computer Society, Washington, DC, 348.

Kirovski, D., Oliver, N., Sinclair, M., and Tan, D. 2007. Health-OS:: a position paper. In Proceedings of the 1st ACM SIGMOBILE International Workshop on Systems and Networking Support For Healthcare and Assisted Living Environments (San Juan, Puerto Rico, June 11 – 11, 2007). HealthNet ‘07. ACM, New York, NY, 76-78

Quan, G. and Hu, X. 2001. Energy efficient fixed-priority scheduling for real-time systems on variable voltage processors. In Proceedings of the 38th Conference on Design Automation (Las Vegas, Nevada, United States). DAC ‘01. ACM, New York, NY 828-833.

Gruian, F. 2001. Hard real-time scheduling for low-energy using stochastic data and DVS processors. In Proceedings of the 2001 International Symposium on Low Power Electronics and Design (Huntington Beach, California, United States). ISLPED ‘01. ACM, New York, NY, 46-51.

Starner, T. 2001. The Challenges of Wearable Computing: Part 1. IEEE Micro 21, 4 (Jul. 2001), 44-52.

Questions?