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Science

Beetle-mounted camera streams insect adventures

Beetle-mounted camera streams insect adventures
Newsexplored
17th July 2020
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A beetle with a camera on its backImage copyright Mark Stone/University of Washington

Researchers have developed a tiny wireless camera that is light enough to be carried by live beetles.

The team at the University of Washington in the US drew inspiration from the insects to create its low-powered camera system.

Its beetle-cam can stream up to five frames per second of low-resolution, black and white footage to a nearby smartphone.

The research was published in the Science Robotics journal.

Image copyright Mark Stone/University of Washington
Image caption Images from the rig are sent to a smartphone via Bluetooth
Image copyright Mark Stone/University of Washington
Image caption The camera’s mechanical arm can pivot 60 degrees

The entire camera rig weighs just 250 milligrams, which is about a tenth of the weight of a playing card.

While the sensor itself is low resolution, capturing just 160 by 120 pixel images, it is mounted on a mechanical arm that can shift from side to side.

That allows the camera to look side to side and scan the environment, just like a beetle, and capture a higher-resolution panoramic image.

Image copyright University of Washington
Image caption The image at the top right was captured by the camera on the beetle, which is stood next to the Rubik’s cube

To conserve battery life, the researchers included an accelerometer in the system, so that it only takes photos when the beetle is moving.

This way, the camera was able to operate for six hours on a full charge.

The beetles were not harmed and “lived for at least a year” after the end of the experiment.

The researchers used what they had learned to produce an independent insect-sized camera robot.

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The team claims it is the world’s “smallest terrestrial, power-autonomous robot with wireless vision”.

Image copyright Mark Stone/University of Washington
Image caption The team has developed a tiny camera robot
Image copyright Mark Stone/University of Washington
Image caption The tiny bot moves by vibrating

Rather than wheels, the robot moves by vibrating and can travel about three centimetres a second.

Shyam Gollakota, senior author of the research, acknowledged that tiny camera robots could introduce new surveillance concerns.

“As researchers we strongly believe that it’s really important to put things in the public domain so people are aware of the risks and so people can start coming up with solutions to address them,” he said.


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Science
17th July 2020
Newsexplored @newsexploredweb

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