Logo of Phnom Penh Post newspaper Phnom Penh Post - Mini fish-like robots swim in schools



Mini fish-like robots swim in schools

Content image - Phnom Penh Post
Harvard scientists have engineered miniature underwater robots known as ‘Bluebot’ which are capable of forming autonomous swarms. AFP

Mini fish-like robots swim in schools

Inspired by how schools of fish intuitively synchronize their movements, Harvard scientists have engineered miniature underwater robots capable of forming autonomous swarms.

Each robotic fish, known as a “Bluebot,” is equipped with cameras and blue LED lights that sense the direction and distance of others inside water tanks.

They swim using flapping fins rather than propellers, which improves their efficiency and maneuverability compared to standard underwater drones.

“It’s definitely useful for future applications – for example a search mission in the open ocean where you want to find people in distress and rescue them quickly,” said Florian Berlinger, the lead author of a paper about the research that appeared in Science Robotics on January 13.

Other applications could include environmental monitoring or inspecting infrastructure.

Existing underwater multi robot systems rely on individual robots communicating with each other over radio and transmitting their GPS positions.

The new system moves closer to mimicking the natural behaviour of fish, which shows complex, coordinated behaviour without following a leader.

The 3D printed robots are about 10cm long, and their design was partly inspired by Blue tang fish that are native to the coral reefs of the Indo-Pacific.

The robots use their camera “eyes” to detect other robots in their peripheral vision, then engage in self-organising behaviour, which include flashing their lights simultaneously, arranging themselves in a circle, and gathering around a target.

Berlinger described a test in which the robots were spread out across a water tank to seek out a light source.

When one of the robots found the light, it sent out a signal to the others to gather around, in a demonstration of a search-and-rescue mission.

“Other researchers have reached out to me already to use my Bluebots as fish surrogates for biological studies on fish swimming and schooling,” said Berlinger, explaining that the robot collectives can help us learn more about collective intelligence in nature.

He hopes to improve the design so that it doesn’t require LEDs and can be used outside laboratory settings such as in coral reefs.

MOST VIEWED

  • Kingdom's Covid cluster cases jump to 194

    The Ministry of Health on February 25 confirmed 65 new cases of Covid-19, with 58 linked to the February 20 community transmission. The latest cluster cases include nine Vietnamese nationals, five Cambodians, one each from Korea, Singapore and Japan, with the rest being Chinese. This brings the total number

  • Locations shut, dozens more Covid-19 positive

    The Ministry of Health has closed 23 locations in connection with the February 20 community transmission of Covid-19 and summoned for testing anyone who had direct contact with affected people and places. The number of discovered related infections has risen to 76, including 39 women. In a press release,

  • Preah Sihanouk hit with travel ban

    Preah Sihanouk Provincial Administration has announced a temporary travel ban to and from the province, except for ambulances and trucks transporting goods. The announcement came after prime minister Hun Sen called on people in the province to travel only if necessary, and that people not

  • Cambodia's Covid cluster cases rise to 137

    The Ministry of Health on February 24 recorded 40 more cases of Covid-19, with 38 linked to the February 20 community transmission. Of the 40, two are imported cases involving Chinese passengers. The 38 include two Vietnamese nationals and one Cambodian, with the rest being Chinese. This brings the total cases

  • AstraZeneca jabs touch down in Phnom Penh airport

    The first shipment of 324,000 doses of the AstraZeneca/SII vaccine which was provided through the Covid-19 Vaccines Global Access (COVAX) Facility was delivered to Phnom Penh International Airport on March 2. The rest of the COVAX provided vaccines will arrive in Cambodia at a later date.

  • Covid cluster raises alarm, health bodies urge vigilance

    The Ministry of Health and the World Health Organisation (WHO) in Cambodia have expressed great concern over the February 20 cluster transmission of Covid-19 in the community. Both entities appealed for vigilance and cooperation in curbing further spread of the virus. Ministry spokeswoman Or Vandine said