This is such a "worn" idea. In the early nineteen eighties, I was responsible for ways to convert stored energy to generate power in Measurements While Drilling (MWD)Systems. One way was to harness the stored energy in downhole shock absorbers coupled to various generators, magnetic voicecoil motors, piezoelectric crystals, hydraulics, etc. Working models were constructed, but I did not patent them. After leaving the company (NL Industries, Houston. TX) "they" did patent the ideas and took the credit!!!
Now, if only someone would talk to Cybex or some other gym equipment maker and come up with a way to convert that wasted fat enery into energy that can be stored. Some kind of friction-based kinetic transducer, or a pressure transducer instead of dumb weights... Seems a shame to see that huffing and puffing go to waste.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.