Real Time Operating Systems for Networked Embedded Systems


Fire Alarm System

Problem
Hundreds of sensors, each fitted with Low Range Wireless
Sensor information to be logged in a server & appropriate action initiated
Possible Solution
Collaborative Action
Routing
Dynamic – Sensors/controllers may go down
Auto Configurable – No/easy human intervention.
Less Collision/Link Clogging
Less no of intermediate nodes
Fast Response Time
Secure

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Definition
Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data ....etc

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Definition
Lasers have been considered for space communications since their realization in 1960. Specific advancements were needed in component performance and system engineering particularly for space qualified hardware. Advances in system architecture, data formatting and component technology over the past three decades have made laser communications in space not only viable but also an attractive approach into inter satellite page link applications.

Information transfer is driving the requirements to higher data rates, laser cross -link ....etc

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Definition

Lasers have been considered for space communications since their realization in 1960. Specific advancements were needed in component performance and system engineering particularly for space qualified hardware. Advances in system architecture, data formatting and component technology over the past three decades have made laser communications in space not only viable but also an attractive approach into inter satellite page link applications.

Information transfer is driving the requirements to higher data rates, laser cross -lin ....etc

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what type of file is c:\39b62b410e8a447f78d3 ....etc

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The Robot control using the wireless communication and the serial communication



Executive Summary
The NASA Robotics Alliance Cadets Program is being designed to be implemented at a
very low start-up cost, and to make this goal obtainable, the program is being developed
using low to no cost components from already developed, well-tested and robust
engineering testbeds.
In this project we are trying to establish both wireless communication between the mob ....etc

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1.1 Wireless Communication Systems
Wireless communication has experienced tremendous growth in the last decade. In
1991 less than 1% of the world’s population had access to a mobile phone. By the
end of 2001, an estimated one in every six people had a mobile phone . During the
same period the number of countries worldwide having a mobile network increased
from just three to over 90%. In fact the number of mobile subscribers overtook the
number of fixed-line subscribers in 2002, as shown in Figure 1.1. It is predicted that
th ....etc

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Mobile wireless communication services have penetrated into many people s daily works and lives. The contents of communication have also shifted from voice-dominating applications to multimedia services.




A common feature people traveling onboard high-speed public transport vehicles is that their journeys last for hours or even days. They would like to make use of these few hours to make telephone calls, read/send e-mails, browse a website or catch up on some work. There are also passengers who wish to have real on-demand entertainm ....etc

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Definition
Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data ....etc

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