Archive for May, 2009
Scale-up of Microbial Fuel Cells
Posted in News on May 28, 2009| Leave a Comment »
ANDy: Antropomorphic Natural Dynamics
Posted in News on May 28, 2009| Leave a Comment »
This project uses the BERUL (Bristol Elumotion Robotic Upper Limb) and BERT (Bristol Elumotion Robotic Torso) robot systems that were designed and built by Elumotion Ltd .
The principle investigators on this project are Adam Spiers, Guido Herrmann and Chris Melhuish
This project is part of the research carried out by the Nonlinear Robotics Control Group.
Morphing Multi-Modal Robots
Posted in News on May 28, 2009| Leave a Comment »
BIOmimetic Technology for vibrissal ACtive Touch
Posted in News on May 28, 2009| Leave a Comment »
While vision supplies information about distant objects, touch is invaluable in sensing the nearby environment. However, in designing intelligent, life-like machines, such as robots, the touch modality has been largely overlooked. Current systems make only limited use of tactile sensors for simple tasks such as detecting physical contact. Biology, by contrast, reveals an abundant use of tactile sensing in the animal kingdom. Indeed, in nocturnal creatures, or those that inhabit poorly-lit places, touch is widely preferred to vision as a primary means of discovering the world. The tactile senses of many mammals are built around arrays of facial hairs known as “whiskers” or “vibrissae”. In this project we will develop new technologies inspired by the whisker morphology and neural processing systems of two such tactile specialists: the Norwegian rat and the Etruscan shrew. These animals sweep their whiskers back and forth at high speeds in a controlled and feedback-sensitive manner. This “active touch” capacity allows them to: (i) maximise their intake of useful information (ii) solve perceptual tasks such as determining the position, shape, and surface texture of encountered objects (iii) encode tactile memories that allow recognition of familiar items and (iv) track and capture prey animals using touch signals alone. Using our understanding of these natural vibrissal systems we will develop two biomimetic artefacts endowed with similar sensing capabilities: a novel active tactile sensing array, termed a BIOTACT sensor, which will be mounted on a robot manipulator arm and incorporate a large number of whisker-like sensing elements and an autonomous whiskered robot that can seek-out, identify, and track fast-moving target objects.
The main project web site is at http://www.biotact.org/.
See also Whiskered Robots: from Whiskerbot towards SCRATCHbot.
The BRL robot manipulator arm was designed and built by Elumotion Ltd (http://www.elumotion.com). in a partnership with BRL
Cooperative Human Robot Interaction Systems – CHRIS
Posted in News on May 28, 2009| Leave a Comment »
Introduction
Partners
- BRL- Bristol Robotics Laboratory, UK
- CNRS – Centre National Recherche Scientifique, France
- IIT – Fondazione Istituto Italiano di Technologia, Italy
- MPG – Max Planck Gesellschaft zur Förderung der Wissenschaften e.V., Germany
Equipment at BRL
Robotic Torso – BERT2 (Bristol Elumotion Robotic Torso 2):
We are currently developing a advanced robot torso featuring an expressive digital head, torque sensors, artificial ‘skin’ and agile limbs. At the same time we are investigating novel adaptive control algorithm for save human robot interaction. The BERT torso was developed and built by Elumotion Ltd (www.elumotion.com) in a partnership with BRL.
Human Eye and Gaze Tracking:
An eye-tracking system is employed to allow the robot to estimate the gaze of its human partner and infer the ‘state of mind’ like intention and focus. This will allow for safer cooperation as well as imitation between the human and the robot
3D Motion Tracking:
We employ a Vicon 3D tracking system to continously monitor position, body movement and gestures of the human whilst interacting with the robot. It is known that human infants undergo a long period of postnatal development which corresponds to the acquisition by trial-and-error exploration (sometimes called motor babbling) of internal models of the body and of the external objects. We are able to oberserve the robot’s joint position in 3D in real-time and will apply similar learning systems to enable the robot to investigate it’s own ‘body’ and the interaction with the environment
Bug-Eating Robots Use Flies for Fuel
Posted in News on May 28, 2009| Leave a Comment »
At the Bristol Robotics Laboratory in England, researchers are designing their newest bug-eating robot—Ecobot III.
The device is the latest in a series of small robots to emerge from the lab that are powered by a diet of insects and other biomass.
“We all talk about robots being able to do stuff on their own, being intelligent and autonomous,” said lab director Chris Melhuish.
“But the truth of the fact is that without energy, they can’t do anything at all.”
Most robots today draw that energy from electrical cords, solar panels, or batteries. But in the future some robots will need to operate beyond the reach of power grids, sunlight, or helping human hands.
Melhuish and his colleagues think such release-and-forget robots can satisfy their energy needs the same way wild animals do—by foraging for food.
“Animals are the proof that this is possible,” he said.
Bug-munching Bots
Over the last decade, Melhuish’s team has produced a string of bots powered by sugar, rotten apples, or dead flies.
The biomass is converted into electricity through a series of stomachlike microbial fuel cells, or MFCs.
Living batteries, MFCs generate power from colonies of bacteria that release electrons as the microorganisms digest plant and animal matter. (Electricity is simply a flow of electrons.)
The lab’s first device, named Slugbot, was an artificial predator that hunted for common garden slugs.
While Slugbot never digested its prey, it laid the groundwork for future bots powered by biomass.
In 2004 researchers unveiled Ecobot II. About the size of a dessert plate, the device could operate for 12 days on a diet of eight flies.
“The flies [were] given as a whole insect to each of the fuel cells on board the robot,” said Ioannis Ieropoulos, who co-developed Ecobot II as part of his Ph.D. research.
With its capacitors charged, the bot could roll 3 to 6 inches (8 to 16 centimeters) an hour, moving toward light while recording temperature. It sent data via a radio transmitter.
While hardly a speedster, Ecobot II was the first robot powered by biomass that could sense its world, process it, act in it, and communicate, Melhuish says.
The scientist sees analogs in the autonomously powered robots of the future.
“If you really do want robots that are going to … monitor fences, [oceans], pollution levels, or carbon dioxide—all of those things—what you need are very, very cheap little robots,” he said.
“Now our robots are quite big. But in 20 to 30 years time, they could be quite minuscule.”
(See a photo of small, solar-powered robots.)
More Power
Whether microbial fuel-cell technology can advance enough to power those robots, however, is unclear.
Stuart Wilkinson, a mechanical engineer at the University of South Florida in Tampa, developed the world’s first biomass-powered robot, a toy-train-like bot nicknamed Chew-Chew that ran on sugar cubes.
He says the major drawback of MFCs is that it takes a big fuel cell to produce a small amount of power.
Most AA batteries, for example, produce far more power than a single MFC.
“MFCs are capable of running low-power electronics, but are not well suited to power-hungry motors needed for machine motion,” Wilkinson said in an email interview.
He added that scientists “need to develop MFC technology further before it can be of much practical use for robot propulsion.”
Ieropoulos, Ecobot II’s co-developer, agrees that MFCs need a power boost.
He and his colleagues are exploring ways to improve the materials used in MFCs and to maintain resident microbes at their peak.
Bot Weaning
To date, the Bristol team has hand-fed its bots.
But if the researchers are going to realize their vision of autonomously powered robots, then the machines will need to start gathering their own food.
When Ecobot II debuted in 2004, Melhuish suggested one way that it might lure and capture its fly food-source: a combination fly-trap/suction pump baited with pheromones.
Whether the accessory will appear in Ecobot III is anyone’s guess. The BRL team remains tight-lipped about their current project, preferring to finish their work in secret before discussing it publicly.
Melhuish will say this, however: “What we’ve got to do is develop a better digestion system … . There are many, many problems that have to be overcome, and waste removal is one of them.”
Will the future bring robot restrooms? Watch this space.
BERTI the Robot Plays Rock, Paper, Scissors
Posted in News on May 28, 2009| Leave a Comment »
by Laura June — Feb 23rd 2009 at 10:29AM
Berti Robot Can Play Rock-Paper-Scissors
Posted in News on May 28, 2009| Leave a Comment »
This robot from the UK has got some advanced artificial intelligence. The robot made its debut in London with a game of rock-paper-scissors. The robot is called Berti and he is less than 2 years old. The robot was created by Bristol Robotics Laboratory and Elumotion. Bristol Robotics is based in the city of Bath, England. Berti was created to mimic human actions.
Berti stands for Bristol Elumotion Robotic Torso 1. Berti is programmed to even detect whether it won or not. The competitor has a sensor glove that shows what move they made.
“We are working towards the design of future humanoid robots that will be intuitive and natural for people to interact with,” stated Elumotion co-director Dr. Graham Whiteley. “Robots like Berti could be used in the development of prosthetic limbs for people who have been in car accidents or to carry out extremely dangerous jobs such as land mine clearance.”
Guests at the Science Museum will be able to see Berti give a speech using computer-generated speech. Berti costs around £200,000 in parts and technology to build.
“Berti was certainly a challenge to build. To mimic human gestures a robot must be both lightweight and powerful. It was certainly a challenge for us but the result is a robot which is as sophisticated as anything else out there,” added Craig Fletcher, another co-director of Elumotion. “This is the first time we have brought Berti out of the lab so it is great to have it here at the museum and meeting people.”
Surviving the apocalypse
Posted in Discussion, tagged Surviving the apocalypse, swine flu, zombie horde on May 28, 2009| Leave a Comment »
A random discussion due to numerous people away at conferences, was how would we survive the end of civilisation. The frame was set regarding what might have happend if Swine Flu had actually spread and killed all but a small percentage of the population.