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Wednesday, September 23, 2009

Piezo Electric Power Generation on Road

Piezo Electric Power Generation on Road

In the last post, i have discussed about Solar road. The technological inventions are never going to end. The another try with the technology is that electric power generation from road by Piezoelectric effect. According to the principle, When a mechanical stress is applied over a Piezoelectric materials, it generate voltage or current.
This principle has been utilized in order to generate power in the order of Kilowatts / Km distance. In the design, the the road is integrated with Piezoelectric materials. Hence, while a vehicle moves over the road, due to its mechanical stress, electric power can be harvested. This will somewhat reduce our demand of electric power worldwide. I would like to thank the researcher who have done this wonderful contributions to the world.

Monday, September 14, 2009

An novel idea of Solar panels integrated with roads

Solar roads
The solar technology is going to make a another milestone. Normally solar panels are used to receive solar power from sun which is used for electrifying many electrical appliances such as lighting, solar car, electrifying house appliances and so on.
The roads are running all over the world, think about that if all the roads are integrated with solar panels, then the tremendous amount of solar power can be extracted which can be used for all the electric appliances. This will in turn improve the shortage of power worldwide.
In addition to this, the power extracted can be used for making signals on the black roads. This will enhance the smooth riding on roads.

Sunday, September 6, 2009

1G, 2G, 3G and 4G telecome technology

Cell phones are used millions and billions of users worldwide. How may of us know the technology behind cell phones that is used for our communication? I have also intrigued about the type of technology used in my phone. What are 1G, 2G, 3G and 4G technologies? I would like to share some of these thoughts in this article

1G, 2G, 3G & 4G ("G" stands for "Generation") are the generations of wireless telecom connectivity

1G (Time Division Multiple Access and Frequency Division Multiple Access ) was the initial wireless telecom network system. It's out-dated now . The analog “brick phones” and “bag phones” are under 1G technology. Cell phones era began with 1G.

The next era, 2G has taken its place of 1G. Cell phones received their first major upgrade when they went from 1G to 2G. This leap effectively took cell phones from analog to digital. 2G and 2.5G were versions of the GSM and CDMA connections. And GSM is still the most popular technology, but with no internet. Fortunately, GPRS, an additional service, is provided over GSM for the purpose of internet access. GPRS has been developed and thus, EGPRS was created . It's more secure and faster than GPRS.

Then 3G came, the new Wireless CDMA technology. It is the first wireless telecom technology that provides broadband-speed internet connection on mobile phones. It has been specially made for the demand of internet on smart phones. Further development led to the creation of 3.5G, which provides blazing fast internet connection on phones, up to the speed of 7.2 MBPS. A smart phone can be connected to a PC to share its internet connection and 3G and 3.5G are ideal for this. But, as this WCDMA technology is not available in all regions, its not as popular as GSM yet. Before making the major leap from 2G to 3G wireless networks, the lesser-known 2.5G was an interim standard that bridged the gap. Following 2.5G, 3G ushered in faster data-transmission speeds so you could use your cell phone in more data-demanding ways. This has meant streaming video (i.e. movie trailers and television), audio and much more. Cell phone companies today are spending a lot of money to brand to you the importance of their 3G network.

4G, which is also known as “beyond 3G” or “fourth-generation” cell phone technology, refers to the entirely new evolution. Developers are now going for 4G (OFDMA), which will provide internet upto the speed of 1 GBPS! It is said to be able to overcome the problems of weak network strength and should provide a much wider network, making sure that the users get high-speed connectivity anytime anywhere. No doubt, 4G will open new doors of revolutionary internet technologies, but for now, 3G and 3.5G are the best. 4G will allow for speeds of up to 100Mbps. 4G promises voice, data and high-quality multimedia in real-time form all the time and anywhere.
Whatever technology that comes or goes, I am still using only 2G technology phone which is cheaper and more comfortable for me

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