Engineers from Cornell, Penn, and one of the European universities have developed a soft robot fish that uses as source of energy are not solid batteries, and a system of artificial blood circulation, through which flows a liquid electrolyte. This approach allows a 40-inch machine to accumulate more energy in a confined space and work for longer time periods without the need of heavy and bulky battery packs. On the development reported in the journal Nature.
According to Robert shepherd, robotics from Cornell University, heads the team that developed this robot, their development is promising because its multi-functionality and autonomy on this basis it is possible to create a new generation of robots able to perform tasks without human intervention.
How to create the most Autonomous robot?
To create the most Autonomous robots able to operate for extended periods of time is a key problem in robotics. Meanwhile, these machines would be very useful, for example, when performing a long search-and-rescue operations or in the course of deep-sea research, says Cecilia Affection, robotics from the School of advanced studies name of St. Anna in Italy.
The cornerstone towards the creation of such most Autonomous cars is the issue of conservation storage. Even the most advanced robots that mimic human or animal, usually do not possess multifunctional and connected to each other in “life supporting” systems, like living organisms. From the same person the necessary nutrients to all the organs supplying the blood constantly circulating in the body. The robot is powered by batteries, and the more energy he needs, the harder it is to equip it with batteries without compromising the autonomy and total weight.
Artificial “blood” robot system
Developed by engineers of robotube similar to ray-finned fish-Zebra. Its design permeate flexible artificial blood vessels, consisting of interconnected flow batteries. Inside each of the battery has positive and negative electrodes (anode and cathode) separated by a membrane. Special pumps are used to pump a small throughout the chain liquid electrolyte (iodide of zinc). The energy that occurs when electrons move from the anode to the cathode, rabaraba uses for the operation of electronic systems of the robot. Moreover, its fins are driven directly by the fluid motion within them. This approach allowed to increase the amount of energy stored in the robot at 325 percent, according to the developers.
During the test, rabaraba could swim autonomously for long time (up to 37 hours of battery life) at a speed of about 1.5 body lengths per minute when moving against the current.
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