3 ms·
Are they omitting the fact that there are side effects? There is no free energy. So the energy they consume from the environment will either attenuate useful ra
by ACV001 3y ago
Are they omitting the fact that there are side effects? There is no free energy. So the energy they consume from the environment will either attenuate useful radio signals or will cause impedance in wires. It's not new anyway, you can listen to radio without any batteries by harnessing the energy from radio waves.
- rini17 3y agoThere are always side effects, some energy of the magnetic field will dissipate anyway in pieces of metal nearby like housings, screws, rebar in the walls etc.
- ldoughty 3y agoI think the interesting parts here are: - it absorbs energy and stores them in capacitors until fully charged - once on, it attempts to activate sensors in such a way it does not need to go offline.. which seems to include "higher power" sensors that will probably have less frequent measurements taken due to the power requirement - the design explanation seems to indicate it would work well with any low power sensor, it is supposed to "learn" how much power a sensor needs to take a measurement. So this isn't (to me) interesting because it's a self-powered sensor, but because it's an auto-starting sensor controller that can make best effort measurements from radio waves, and it's not necessarily fixed to specific sensors (presumably any sensor that doesn't exceed it's capacitors, less the power required to switch back to harvest mode)
- Workaccount2 3y agoGenerally these energy harvesting devices harvest such little energy than any effect is negligible. Like leaving a drinking glass in the rain and working out how that will affect the water table.