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Friday, March 4, 2011

RECENT DEVELOPMENTS IN ROBOTICS


ABSTRACT:-
The aim of our paper is to bring the developments of robotics in the field of bomb diffuse robots...

so we consider,The Army’s remote-controlled, bomb-finding robots aren’t finding enough bombs in Afghanistan. So the military is toying with a new notion: Let the robot drive itself; and make it bigger, like the size of a golf cart.

In a recent solicitation for small businesses, the Army expresses interest in a remote-controlled vehicle that’s bigger than most robots but (way) smaller than its fleet of tactical vehicles. Really, it’s a software system outfitted with sensors for detecting a variety of bombs — “pressure activated devices and command detonated explosive devices” alike — that can turn an existing “mid-sized” vehicle into a self-driving or remotely-controlled car. The so-called “Intelligent Behavior Engine” has to support “skid steer hydraulic arm attachments” — Doctor Octopus-like robot arms, to defuse the bombs it finds. And it’s got to weigh between 500 and 3000 pounds (the size of a golf cart, Smart car, or John Deere Gator), making it hypothetically “capable of traversing long distances on narrow, rugged paths.”

It was just two months ago that the Army announced it would buy dozens of radar add-ones for armored Husky vehicles to spot and stop improvised explosive devices, a $106.5 million push. But the solicitation says the bulky Husky isn’t right for Afghanistan, since it “cannot traverse the rugged terrain and narrow paths” that pass for the country’s bomb-infested roads.

That exact same concern led the Army to put out a call last month for new bomb-detecting robots that can traverse “rough terrain, 45 degree hills, rocks, holes, culverts and other obstacles.” Only there, the Army wanted to move in the opposite direction, shrinking robots down from several hundred pounds, not bulking them up to car-like sizes and marching them for up to 30 miles at a time. Still, in a vote of no-confidence in the robot fleet, the solicitation laments that “currently fielded technologies have limited utility for defeat of IEDs on narrow unimproved routes during deep insertions into rugged terrain.”

Ideally, the Intelligent Behavior Engine will have “off-board, ‘back-seat driving’ capabilities” — controls that let troops on patrol operate the car remotely, using it for “scanning, digging and emplacing explosive charges” when it senses a bomb nearby. The Army doesn’t have either a software or a vehicle design in mind, but it says that it’ll favor “intelligent, adaptive software behaviors that provide standoff operation in terms of navigation, detection and neutralization.” In other words, when the car finds an improvised explosive device, it should know how to safely avoid, defuse or detonate it.

Much like the earlier robot solicitation, the bomb-stopping robot car is a dream for now. The Army isn’t releasing money for it right now, opting to first see what industry can dream up. Solicitations are due December 13. But the Army’s judgment about the usefulness of the current robot fleet is already clear to see. What will the incoming director of the Pentagon’s bomb squad think of a sure-to-be-expensive push for new robots?

WIRELESS POWER TRANSMISSION

 We cannot imagine the world without electric power.Generally the power is transmitted through wires. This paper describes an original idea to eradicate the hazardous usage of electrical wires which involve lot of confusion in particularly organizing them.

Imagine a future in which wireless power transfer is feasible: cell phones, household robots, mp3 players, laptop computers and other portable electronics capable of charging themselves without ever being plugged in, freeing us from that final, ubiquitous power wire. Some of these devices might not even need their bulky batteries to operate.

This paper includes the techniques of transmitting power without using wires with an efficiency of about 95% with non-radiative methods.Due to which it does not effect the environment surrounding.These techniques includes resonating inductive coupling in sustainable moderate range.
The coupling consists of an inductor along with a capacitor with its own resonating frequency. In any system of coupled resonators there often exists a so-called “strongly coupled” regime of operation. If one ensures to operate in that regime in a given system, the energy transfer can be very efficient

Another technique includes transfer of power through microwaves using rectennas.This is particularly suitable for long range distances ranging kilometers.With this we can avoid the confusion and danger of having long,hazardous and tangled wiring.

This paper as a whole gives an effective, high performance techniques which can efficiently transmit the power to the required area varying in distances and input.

ABSTACT:- INTERNET FOR RURAL THROUGH...

       The main aim of our paper is to bring forth the detail about the low cost wireless internet access for rural area through the 4G technology wi-fi (IEEE 802.11n).                                                     
                        paper analyses the cost and effectiveness of all possible technologies such as
  • Cisco Aeronet Bridge based system, 
  • tethered Aerostat based network, and 
  • mesh network 
to find the suitable broadband access technology for rural people in a bearable cost.