The sensation of pain protects robots from damage. Free Technical Library News

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Sensing pain protects robots from damage

28.12.2023

Artificial pain sensors have become an effective means of preventing damage to robots when interacting with the outside world. Special sensors created by scientists at the National University of Singapore based on zinc and gallium measure the force of the impact and transmit the corresponding signals to the robot's motion control system. This allows robots to learn to be more careful when handling objects that could cause damage.

The introduction of pain sensors into robotics opens up new horizons in the field of safety and training artificial systems to prevent damage. This technology also holds positive promise for medical applications, where precision and reliability are critical.

Experts have developed sensors that, with sufficient impact force, generate an electrical signal similar to impulses from pain receptors in humans. An artificial intelligence algorithm processes these signals, recognizing impacts that are safe and potentially dangerous for the robot.

A robotic arm equipped with such pain sensors successfully distinguishes between safe and dangerous objects with an accuracy of 97,5 percent. In the case of dangerous objects, such as a spiked ball, the algorithm forces the robotic arm to avoid the impact, preventing damage.

Scientists hope that these innovative sensors will not only have applications in robotics, but will also be useful in creating more precise prosthetics and giving surgeons more precise control of surgical instruments.

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Car exhaust contains several toxic gases at the same time: these are gaseous hydrocarbons, carbon monoxide CO, nitrogen oxides NO and NO2. In order to prevent these substances from entering the atmosphere, they are passed through a catalytic converter. Purification includes several processes - oxidation of carbon monoxide and residues of gaseous hydrocarbons, reduction of nitrogen oxide impurities to molecular nitrogen N2 and removal of ammonia, which is obtained from nitrogen oxides as a by-product.

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