A crash course in changing the world.
Advances in two key technologies enable Leonov's devices: efficient thermopiles and miniature solar panels. Thermopiles are arrays of
thermocouples, metallic combinations that create electricity from
differences in heat. According to Leonov, his thermopiles can generate
400 microvolts for every 34 degree Fahrenheit difference in
temperature, and convert 10 milliwatt of power from every 1.5 square
inch of skin. Thanks to small variations like wind and shadows, the
thermopiles continue to generate electricity even when the ambient
temperature and surface body temperature are the same.
For Leonov, using thermopiles allowed him to solve two key problems of his earlier designs. When working just with solar panels, he found
that the devices didn't get enough juice, since the patients attached
to EEGs and ECGs had conditions that necessarily kept them inside and
out of the sun. Similarly, piezoelectric generation, which converts
body movement into electrical energy, also failed to generate enough
power because most patients requiring EEG or ECG monitoring spent most
of their time in bed, not moving around. But even a coma victim
generates heat, and when paired with a small amount of light for solar
power, that heat produced enough power to run the machines.
He admits currently the cost of the device to to high to be widespread...but he is working on the technology to make it possible...people in mind...health and access to what we all need!
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