This is just a short blurb i found about a company who are currently working on ways of harvesting kintic energy. Its a bit over my head but you get the idea.
PMG FSH Free Standing Harvester
A best-in-class integrated wireless power solution, the PMG FSH combines electromagnetic vibration energy harvesting technology with a selectable suite of energy charge, storage, and management options. The harvesters convert unused mechanical vibration into usable electrical energy to power wireless sensor systems used to monitor critical systems. The PMG FSH has integrated drive circuitry for charging an external storage device up to 4ma at 5V while reporting power levels via a serial communications interface via 3-pin IEC-standard connector. Output is up to 20 mW. The PMG FSH mounts either using a magnetic mount or a center through hole. Intrinsically safe, certified versions are available, carrying ATEX and IECEx certifications; CSA certification is pending.
An electromagnetic-energy harvester converts mechanical energy (vibration) to electrical energy. A coil attached to the oscillating mass traverses a magnetic field that is established by a stationary magnet. The coil travels through a varying amount of magnetic flux, inducing a voltage according to Faraday's law.
Perpetuum realized the other more advantageous way is to move the magnetic structure (which is inherently massive) and keep the coil fixed. Hence increasing the power output and making the electrical connections more reliable. The resulting voltage can be regulated to convenient storage or usage levels.
The Perpetuum FSH outputs a "load-independent" DC current up to 4mA (based on source vibration). The output current supplied is the same whether measuring with a multimeter during installation or while charging a WSN storage capacitor up to 5V.
Perpetuum field deployable harvesters are designed to last at least 20 years without maintenance, easily outlasting other battery-only powered systems.
Scalable and frequency tunable, Perpetuum electromagnetic VEH resonators have been selected by the world's premier Industrial Wireless Automation Leaders.
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