Researchers at the University of Queensland’s have created miniature microchip backpacks that can be used to remotely guide darkling beetles (Zophobas morio) via video game controllers. According to the researchers, the backpack-equipped beetles could one day be used to help search and rescue crews locate survivors within hours instead of days following disasters such as building and mine collapses.
Thang Vo-Doan (pictured below, at right) said the removeable backpacks prompted movement in specific directions through electrodes that stimulated the insect’s antenna or hardened forewings, which are known as elytra.
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‘Beetles possess many natural gifts that make them the masters of climbing and manoeuvring in small, complex spaces such as dense rubble that are difficult for robots to navigate,’ Vo-Doan said. ‘Our work harnesses these gifts and adds programmable controls that allow for precise directional guidance without affecting the lifespan of the beetle.’
The long-term project involves a team of researchers at the UQ Biorobotics lab in the School of Mechanical and Mining Engineering, who hope to test the technology in a live situation within five years.
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Research assistant Lachlan Fitzgerald (pictured above, at left) said the latest research, showing the beetles could be guided to move side-to-side and up vertical walls, was a collaborative effort with UQ’s School of the Environment, the University of NSW and Singapore’s Nanyang Technological University.
‘While robots at this scale have made strides in locomotion, the transition from horizontal surfaces to walls remains a formidable challenge for them,’ Fitzgerald said. ‘This difficulty arises from the need for active foot pads, soft environmental interactions and sophisticated sensing capabilities – all things that our cyborg insects possess naturally that allows them to access any area that is required in a disaster environment.’
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Vo-Doan said that while a tethered power supply had been used for the climbing test, the beetles had also demonstrated the ability to climb with a battery equivalent to its own body weight.
The team is refining designs to allow for cameras and a compact and efficient power system to enhance the beetle’s mobility and versatility.
‘If people have been trapped under an extensive amount of rubble, you want to be able to find them as quickly as possible and start planning how to get them out,’ Vo-Doan said. ‘We hope to produce a tool that can easily move through chaotic environments to pinpoint a person’s exact location, provide clues to any injuries and give rescuers a picture of what needs to be done to free them.’
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The research has been published in Advanced Science.