Patent ID: 8648480

Claim:
A system comprising: a housing disposed within a fluid having a fluid flow; a support member located external to the housing, the support member directly exposed to the fluid flow and lengthwise positioned in the direction of the fluid flow; a first member and a second member located substantially external to the housing, the first member and the second member directly exposed to the fluid flow and lengthwise positioned transverse to the direction of the fluid flow, the first member and the second member configured to vibrate independently of the housing responsive to direct exposure to the fluid flow, wherein a first end of the first member and a first end of the second member are flexibly coupled to the support member; a coil coupled to a second end of the first member, the coil disposed within the housing and shielded from direct fluid flow; and a magnet coupled to a second end of the second member, the magnet disposed within the housing and shielded from direct fluid flow, wherein magnetic flux from the magnet induces an electric current through the coil responsive to relative motion between the at least one magnet and the coil caused by vibration of the first member and the second member.