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À̸§ °ü¸®ÀÚ waterindustry@hanmail.net ÀÛ¼ºÀÏ 2015.12.02 Á¶È¸¼ö 586
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¶§¶§·Î ¿À¿°¼ö´Â ¹Ù´Ù³ª Ç®¿¡¼­ ¼ö¿µÇÏ´Â °ÍÀ» À§ÇèÇÏ°Ô ÇÏÁö¸¸, ´Ù¸¥ ÇÑÆíÀ¸·Î´Â ¹°¹ú·¹(water boatman)¿Í °°Àº ¼öÁß»ý¹°Àº »ýÁ¸À» À§ÇØ ´õ·¯¿î ¹°¿¡¼­ ¿µ¾çºÐÀÌ ÇÊ¿äÇÏ´Ù. ¹°¹æ°³(water beetles)¿Í ´Ù¸¥ ¼ö¿µ °ïÃæÀ¸·ÎºÎÅÍ ¿µ°¨À» ¾òÀº ¿µ±¹ ºê¸®½ºÅç ´ëÇб³ ·Îº¿ ¿¬±¸¼Ò(BRL, Bristol Robotics Laboratory) ¿¬±¸ÁøµéÀº ´õ·¯¿î ¹°¿¡¼­ »ýÁ¸ÇÏ´Â ·Î¿ì-º¿(Row-bot) °³¹ß¿¡ ¼º°øÇß´Ù. ÀÌ ·Îº¿Àº ¹°¹ú·¹°¡ À̵¿ÇÏ°í ¼ö¿µÇÏ´Â ´õ·¯¿î ¹°¿¡ Àִ dzºÎÇÑ À¯±â¹°Áú ÀÔÀÚ¸¦ ¼·ÃëÇÏ´Â ¹æ¹ýÀ» ¸ð¹æÇÑ °ÍÀÌ´Ù.

ÀÌ ·Î¿ì-º¿(Row-bot) ÇÁ·ÎÁ§Æ®´Â ȯ°æ¿¡¼­ ¿¡³ÊÁö¸¦ °ø±Þ¹ÞÀ¸¸é¼­ ¸Ö¸® ¶³¾îÁø ±¸Á¶È­µÇÁö ¸øÇÑ °ø°£¿¡¼­ ¹«ÇÑÇÏ°Ô ÀÛµ¿ÇÏ´Â ÀÚµ¿ ¼ö¿µ ·Îº¿À» °³¹ßÇÏ´Â °ÍÀÌ ¸ñÇ¥ÀÌ´Ù. Àü·Â°ø±ÞÀÌ ÇÊ¿äÇϸé, ÀÌ ·Îº¿Àº ºÎµå·¯¿î ·Îº¿ Çô¸¦ ³»¹Ð¾î ¿µ¾çºÐÀÌ Ç³ºÎÇÑ ´õ·¯¿î ¹°·ÎºÎÅÍ ÀÚüÀÇ ¹Ì»ý¹° ¿¬·áÀüÁö(MFC, microbial fuel cell)¸¦ ÃæÀü½ÃŲ´Ù. ±×´ÙÀ½, ÀÔÀ» ´Ý°í ±× ¿µ¾çºÐÀ» õõÈ÷ ¼ÒÈ­½ÃŲ´Ù. ¹Ì»ý¹° ¿¬·áÀüÁö(MFC) À§ ºÎºÐÀº »ý¹°Ã¼¿¡¼­ ¿µ°¨À» ¾òÀº ¸ÞÄ¿´ÏÁòÀ» »ç¿ëÇÏ¿© Àü±â¸¦ »ý»êÇϱâ À§ÇØ À¯±â¹°ÁúÀÇ »ýºÐÇØ(bio-degradation) ¹æ½ÄÀ» »ç¿ëÇÑ´Ù. Àü±â¿¡³ÊÁö¸¦ ÀçÃæÀüÇÑ ´ÙÀ½, ÀÌ ·Îº¿Àº »õ·Î¿î Àå¼Ò·Î À̵¿ÇÏ¿© ´Ù¸¥ ¿À¿°µÈ ¹°ÀÇ ¿µ¾çºÐÀ» ã°Ô µÈ´Ù.

ºê¸®½ºÅç ´ëÇб³ ¹× ºê¸®½ºÅç ´ëÇб³ ·Îº¿ ¿¬±¸¼Ò(BRL) ·Îº¿ÇÐ ±³¼öÀÎ Á¶³ª´Ü ·Î¾¾ÅÍ(Jonathan Rossiter) ±³¼ö´Â "ÀÌ ¿¬±¸°á°ú´Â Àå±â°£ ÀÚüÀûÀ¸·Î Àü·ÂÀ» °ø±Þ¹Þ´Â ÀÚÀ² ·Îº¿ °³¹ß¿¡¼­ Áß´ëÇÑ ÀüÁøÀ» º¸¿©ÁØ´Ù. ´ëºÎºÐ ·Îº¿Àº ÃæÀü ¶Ç´Â ¿¬·áÀÇ Àç°ø±ÞÀÌ ÇÊ¿äÇÏ¿©, Á¾Á¾ »ç¶÷ÀÇ °³ÀÔÀÌ ÇʼöÀû"À̶ó°í ¸»Çß´Ù.

¹Ú»ç°úÁ¤ ÇлýÀÎ Ç𸶠Çʶó¸ð¾î(Hemma Philamore)¾¾´Â "¿ì¸®´Â ÀÌ ·Îº¿ÀÌ ¿øÀ¯ÀÇ ´©Ãâ°ú Çطοî ÀûÁ¶¿Í °°Àº ¿À¿°¹°ÁúÀÇ È¯°æÀû û¼ÒÈ°µ¿ ±×¸®°í Àå±âÀûÀ¸·Î´Â ÀÚ¿¬ÀçÇØ¿Í Àΰ£ÀÌ ¸¸µå´Â ÀçÇØ·Î ¸»¹Ì¾Ï¾Æ ¹ß»ýÇÏ´Â À§ÇèÇÑ È¯°æÀû À§ÇØ¿¡ ´ëÇÑ ÀÚµ¿ ¸ð´ÏÅ͸µ¿¡ »ç¿ëµÉ ¼ö Àֱ⸦ Èñ¸ÁÇÑ´Ù"°í µ¡ºÙ¿´´Ù.

ÇÁ·ÎÅäŸÀÔ ·Îº¿Àº 2°¡ÁöÀÇ ¼­ºê½Ã½ºÅÛÀ¸·Î ±¸¼ºµÇ¾î ÀÖ´Ù. ±×°ÍÀº »ý¹°ÇÐÀûÀ¸·Î ¿µ°¨À» ¹ÞÀº ¿¡³ÊÁö ¼Ò½º¿Í »ý¹°ÇÐÀûÀÎ ¿µ°¨À¸·Î Á¦À۵Ǿî ÀÛµ¿µÇ´Â ½Ã½ºÅÛÀÌ´Ù. ù ¹ø° ¼­ºê½Ã½ºÅÛÀº ·Îº¿ÀÇ Àü·Â »ý»ê ´É·ÂÀ» º¸¿©ÁØ´Ù. µÎ ¹ø° º¹ÇÕ ½Ã½ºÅÛÀº ¿ø·á°ø±Þ ÇÁ·Î¼¼½ººÎÅÍ ½ÃÀÛÇÏ¿© ù ¹ø° ½Ã½ºÅÛ¿¡¼­ »ý»êµÈ ¿¡³ÊÁöº¸´Ù Àû°Ô »ç¿ëÇÏ¿© ·Îº¿À» ¿òÁ÷ÀÏ ¼ö ÀÖµµ·Ï ÇÑ´Ù. ÀÌ°ÍÀº ¹Ì»ý¹° ¿¬·áÀüÁö(MFC) ³»ºÎÀÇ ¹Ì»ý¹°ÇÐÀû ½ÅÁø´ë»ç¸¦ Áö¿øÇϱâ À§ÇØ ÁÖÀ§ÀÇ ¾×ü¿¡ Æ÷ÇÔµÈ È­ÇÐÀû ¿¡³ÊÁö¿øÀ» ¼·ÃëÇϵµ·Ï ¼³°èµÇ¾ú´Ù.

¾×ü¿Í ÆÛÁ® ÀÖ´Â ÀÔÀÚ»ó ¹°ÁúÀ» ¼·ÃëÇϱâ À§ÇØ ³ÐÀº ºÎ¸®¿Í °°Àº ÀÔÀ» °¡Áø ¹°¹ú·¹(water boatman)ÀÇ ¿ø·á¼·Ãë ½Ã½ºÅÛÀ» ¸ð¹æÇÏ¿©, ÀÌ ·Îº¿Àº Ç÷º½ÃºíÇÑ ¾Æ¼¼Å×ÀÌÆ® ºÀÅõ¿Í °°Àº ±¸Á¶Ã¼ÀÇ ±ÁÈû Çö»óÀ» ÅëÇØ ¹Ì»ý¹° ¿¬·áÀüÁö(MFC)ÀÇ ¾ç ³¡´ÜºÎ¿¡ ÀÖ´Â ÀÔ°ú °°Àº ¼º´ÉÀ» °¡Áø ¿À¸®ÇǽºÀÇ °³Æó¸¦ ÅëÇØ ¹Ì»ý¹° ¿¬·áÀüÁö(MFC) À§ ºÎºÐÀ¸·Î ¿ø·á¸¦ °ø±Þ½ÃŲ´Ù. ÀÌ·¯ÇÑ ½Ã½ºÅÛ ¸ðµÎ¸¦ »ç¿ëÇÏ¿©, ·Îº¿Àº ¾×ü ³»¿¡ ÃæºÐÇÑ ¿¡³ÊÁö¸¦ Æ÷ÇÔÇÑ ¹°°ú´Â ¿ÏÀüÈ÷ µ¶¸³ÀûÀ¸·Î µÈ´Ù.

ÀÌ ·Îº¿Àº ºê¸®½ºÅç ´ëÇб³¿Í ºê¸®½ºÅç ¿þ½ºÆ® À×±Û·£µå ´ëÇб³(UWE Bristol)¿Í °øµ¿À¸·Î ºê¸®½ºÅç ´ëÇб³ ·Îº¿ ¿¬±¸¼Ò(BRL)ÀÇ ¹Ú»ç°úÁ¤ ÇлýÀÎ Ç𸶠Çʶó¸ð¾î(Hemma Philamore)¾¾¿Í ±×³àÀÇ ¹Ú»ç°úÁ¤ Áöµµ±³¼öµé¿¡ ÀÇÇØ °³¹ßµÈ °ÍÀÌ´Ù. ±×³àÀÇ Áöµµ±³¼ö´Â ºê¸®½ºÅç ´ëÇб³ ¿£Áö´Ï¾î¸µ ¼öÇаú(Department of Engineering Mathematics) Á¶³ª´Ü ·Î¾¾ÅÍ(Jonathan Rossiter) ±³¼ö¿Í, ¿þ½ºÆ® À×±Û·£µå ´ëÇб³ ºê¸®½ºÅç ¹ÙÀÌ¿À¿¡³ÊÁö ¼¾ÅÍ(Bristol BioEnergy Centre)ÀÇ ÀÌ¿À¾Æ´Ï½º ÀÌ¿¡·ÎÆÄ¿ï·Î½º(Ioannis Ieropoulos) ±³¼öÀÌ´Ù.
 
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A row-bot that loves dirty water

Polluted water can at times make swimming in the sea or a pool risky, on the other hand aquatic organisms such as water boatman need the nutrients in dirty water to feed on. Taking inspiration from water beetles and other swimming insects, academics at the Bristol Robotics Laboratory (BRL) have developed the Row-bot, a robot that thrives in dirty water. The Row-bot mimics the way that the water boatman moves and the way that it feeds on rich organic matter in the dirty water it swims in.

The Row-bot project aims to develop an autonomous swimming robot able to operate indefinitely in remote unstructured locations by scavenging its energy from the environment. When it is hungry the Row-bot opens its soft robotic mouth and rows forward to fill its microbial fuel cell (MFC) stomach with nutrient-rich dirty water. It then closes its mouth and slowly digests the nutrients. The MFC stomach uses the bio-degradation of organic matter to generate electricity using bio-inspired mechanisms. When it has recharged its electrical energy stores the Row-bot rows off to a new location, ready for another gulp of dirty water.

Jonathan Rossiter, Professor of Robotics at the University of Bristol and BRL, said: "The work shows a crucial step in the development of autonomous robots capable of long-term self-power. Most robots require re-charging or refuelling, often requiring human involvement."

Hemma Philamore, PhD student, added: "We anticipate that the Row-bot will be used in environmental clean-up operations of contaminants, such as oil spills and harmful algal bloom, and in long term autonomous environmental monitoring of hazardous environments, for example those hit by natural and man-made disasters."

The prototype robot combines two subsystems; a bioinspired energy source and bio-inspired actuation. The first subsystem shows the power generation capability of the robot. A second duplicate system starts the refuelling process and moves the robot with an energy requirement that is less than the energy generated by the first system. This is achieved by feeding on chemical energy contained in its surrounding fluid to support microbial metabolism inside the MFC.

Mimicking the water boatman's feeding mechanism, which employs a broad beaklike mouth to sweep in both fluid and suspended particulate matter, the Row-bot feeds its MFC stomach by opening and closing the mouth-like orifice at each end of the MFC through the bending of a flexible acetate envelope structure. By using both these systems the robot can be totally independent in water providing enough energy is available in the fluid.

The Row-bot was developed at the Bristol Robotics Laboratory, a collaboration between the University of Bristol and UWE Bristol, by PhD student, Hemma Philamore and her PhD supervisors; Professor Jonathan Rossiter from the University of Bristol's Department of Engineering Mathematics and Professor Ioannis Ieropoulos from the Bristol BioEnergy Centre at the University of the West of England.
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