【Kengoro:出汗保持冷静的机器人】

【Kengoro:出汗保持冷静的机器人】来自日本的研究员设计了一种会“流汗”的人形机器人 Kengoro,让它做11分钟俯卧撑而没有烧坏电机。Kengoro 的“骨架”由铝构成,每块“骨骼”都是将金属粉末经过激光烧结,设计为蜂窝状。从内部的多孔层释放的水,传到更多孔的框架,而表面进行蒸发,水分泄漏到地板上,实现降温。一杯去离子水就可使Kengoro运行半天不过热。

Meet Kengoro the terrifying Japanese 'brobot' that SWEATS to keep itself cool

By STACY LIBERATORE

Humans and robots have one thing in common – when they work hard, they overheat.

Now, Japanese researchers have designed a robot that 'sweats' in order to stay cool, allowing it do push-ups for 11 minutes straight without burning out its motors.

Kengoro's skeletal structure is designed to let water seep through porous layers in its frame, which eventually evaporates to cool its 180 motors.39634E0900000578-3838631-image-a-1_1476463089762

Researchers at the University of Tokyo were searching for a strategic way to add a cooling system to their 123 pound, 5 foot 7 inch tall humanoid.

However, this robot was already 'stuffed to the brim with structural components, circuit boards, gears and motors', making it impossible to make room to add an active water cooling system.

The team realized the robot's structure could be modified to function as the entire system in a way that would cool it down similar to human skin.39633CE200000578-3838631-image-a-4_1476463099466

'Usually the frame of a robot is only used to support forces,' lead author Toyotaka Kozuki told IEEE Spectrum in an interview.

'Our concept was adding more functions to the frame, using it to transfer water, release heat, and at the same time support forces.'

Kengoro's skeleton, or metal frame, is made of aluminum and each 'bone' was printed using a laser that sintered the powered metal, reports Evan Ackerman with IEEE.

This process lets developers select the permeability of the metal, as some parts of this humanoid are solid and others are similar to a sponge.396348EE00000578-3838631-image-a-2_1476463093516

The bones were designed with a porous honeycomb-like layers that retain water.

Water is released when the robot is working hard and begins to overheat.

As water releases from a pump in the inner porous layer of the 'bones', it travels to a more porous region near the surface of the frame – here it evaporates, instead of leaking onto the floor.

One cup of deionized water can keep Kengoro powered for half of the day without overheating and it can do push-ups for 11 minutes straight.396348F600000578-3838631-image-a-3_1476463095672

But just like humans, this robot needs to keep itself hydrated for the cooling system to function properly.

The researchers found that this new human-like system works three times better than air cooling and significantly better than just circulating water through the interior channel.39633CE600000578-3838631-image-a-5_1476463102992

However, the team says it is not as effective as using traditional radiators or fans, which is found in many machines.

http://www.dailymail.co.uk/sciencetech/article-3838631/Meet-Kengoro-terrifying-Japanese-brobot-SWEATS-cool.html


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