Scientists from Cornell University have created a robot lionfish equipped with hydraulic circulatory system which also carries energy which powers the artificial body for about 40 hours.
Robots with a limited battery source mean it can be discharged easily, however the latest invention of the robot lionfish uses robot blood to stay in power.
“The idea came from just thinking about how our own circulatory system works. We have blood that provides energy to our muscle, that blood powers our heart and that heart pumps our blood. So this circular system brought us to the idea of using hydraulic fluids in robots that also carries energy and that energy powers the pump that moves the hydraulic fluid,” reports Robert Shepherd from Cornell University while explaining the mechanisms of the robot lionfish.
The robot does not move very fast, but the ‘robot blood’ allows the fish to swim for a very long time, for about 40 hours. However, it swims 15 cm per minute, which is still pretty slow. The speed clearly is a weakness, since it means, the robot fish still has no survival mechanisms, if it were in an ocean.
The scientists are hence still working on the evolution of the robot lionfish. Made of a soft exterior material, experts hope this discovery is one of the first steps towards measuring health of the oceans in the future.