Spring disc energy harvester apparatus and method

摘要: An energy harvesting apparatus and method that is especially well suited for low frequency broadband vibration from a vibrating structure presented. The includes pair of disc springs are arranged in an opposing relationship. A threaded fastening member nut extend through apertures each the enable predetermined preload force to be applied springs. effectively “softens” springs, thus heightening sensitivity frequency, amplitude energy. piezoelectric material ring secured Each experiences changes strain as its associated spring deflects response experienced structure. electrical output can used power or activate various forms electronic sensors devices, it conditioned stored circuit later use.