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China Education Equipment Purchasing Network News: According to foreign media reports, US scientists recently installed miniature cameras, microphones and other sensors and communication equipment on insects to rescue survivors in the disaster scene, and are expected to develop "life-saving angel" machine insects.
Professor Khalil Najafi (University of Michigan) and engineering students are developing this technology. First they need a special mini camera, and secondly they need a special power supply to provide continuous power for this camera. Professor Najafi said: "We have already thought about the power supply. We will install the sensor power generation equipment on the insects and use the wings to flap the wings in an environmentally friendly way. Then we can send these insects to dangerous or closed environments. Go, we don't want humans to take risks. "Let this little insect carrying a camera go deep into the disaster scene to find survivors. Of course, survivors can also seek help from the outside world through this insect.
The research team has been able to use the Green June Beetle to generate electricity by waving its wings. The researchers developed a piezoelectric device and used the piezoelectric device to test the power generation ability of the beetle's wings, chest and wing sheath. The piezoelectric device can operate at a frequency of 85 Hz to 105 Hz, which is also the frequency range in which the green flower chafer wings vibrate. Experiments show that the closer the piezoelectric device is to the bottom of the flying muscle, the greater the mechanical pressure it receives and the greater the output power. After switching to a larger piezoelectric device, it can reach 115 milliwatts in the best part. This also marks the first time that people use live insects and non-resonant devices to harvest energy. This green flower chafer is less than an inch (about 2.5 cm) long. The first flight test will be carried out next year.
Compared with live insects, machine insects have advantages in aerodynamic performance, flight time, load capacity, and energy storage miniaturization. Scientists have spent years developing the first robotic insect microdevice. Machine insects can obtain kinetic energy by waving their wings, and then convert the kinetic energy into electrical energy, and the equipment can obtain "environmentally friendly" continuous power supply. The device can also obtain electricity from solar energy. Machine insects can be used as miniature aircraft to perform tasks such as search, rescue, tracking, monitoring of dangerous environments, and detection of explosives. There have been attempts to make robot insects "sniff out" toxic substances. They can also be used in military or sent to the Fukushima nuclear power plant and other places that are too dangerous for humans.
The project is sponsored by the Defence Advanced Research Projects Agency.
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