Almost all firms use UPS systems. They maintain the continuity of supply in case of power outages. But all UPS equipments regardless of manufacturer should be completely de-energized for preventive maintenance at least once per year. This limits the availability of the power system.

But now a ?days certain configurations of the UPS systems are there to permit concurrent maintenance so that we can overcome the above problem.

Each of the system configurations described in this paper has its own advantages and disadva ....etc

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

....etc

[:=Read Full Message Here=:]

Definition
Micro-electromechanical systems (MEMS) is a technology that combines computers with tiny mechanical devices such as sensors, valves, gears, mirrors, and actuators embedded in semiconductor chips.




Overview
MEMS are already used as accelerometers in automobile air-bags. They've replaced a less reliable device at lower cost and show promise of being able to inflate a bag not only on the basis of sensed deceleration but also on the basis of the size of the person they are protecting. Basically, a MEMS device contains micro-cir ....etc

[:=Read Full Message Here=:]

This is a new technique for the protection of transmission systems by using the global positioning system (GPS) and fault generated transients. In this scheme the relay contains a fault transient detection system together with a communication unit, which is connected to the power line through the high voltage coupling capacitors of the CVT.

Relays are installed at each bus bar in a transmission network. These detect the fault generated high frequency voltage transient signals and record the time instant corresponding to when the initial ....etc

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

....etc

[:=Read Full Message Here=:]

The tending extinction of fossil fuels has already created an awareness to look for alternative sources of energy of which solar is most promising in a topical country like ours , where it is available in abundance . The efforts are being made to utilize solar energy in building sector to fulfill the thermal as well as electrical requirements. Various thermal systems have being developed and commercialized for space and water heating . Work is being done on projects to generate electricity through photovoltaic conver ....etc

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

Now a day it is very important to increase the efficiency of IC engines due to many factors such as fuel economy, fuel crisis and ultimately to increase the output. Here comes the importance of effective cooling systems in IC engine.

The advanced cooling concepts are proposed to overcome the shortcomings arising when applying conventional cooling methods. The various effects of overheating the engine components due to the improper cooling and conventional cooling methods have also being discussed.


During the process of combustion a lar ....etc

[:=Read Full Message Here=:]