CPC H02N 2/186 (2013.01) [B65G 39/09 (2013.01); H02J 7/0068 (2013.01)] | 8 Claims |
1. An energy harvesting roller for a cargo handling system, comprising:
a shaft;
a sleeve located on the shaft;
a piezoelectric member coupled to the sleeve; and
a shell located radially outward of the sleeve thereby enclosing the piezoelectric member between the sleeve and a radially inward surface of the shell, the shell configured to rotate relative to the sleeve, wherein the radially inward surface of the shell defines at least one of a plurality of grooves or a plurality of protrusions and wherein the piezoelectric member is configured to vibrate in response to the shell rotating about the shaft and deflecting the piezoelectric member from a neutral position.
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7. A roller tray, comprising:
a first vertical wall;
a second vertical wall;
a first energy harvesting roller located between the first vertical wall and the second vertical wall, the first energy harvesting roller comprising:
a shaft;
a sleeve located on the shaft;
a piezoelectric member coupled to the sleeve; and
a shell located radially outward of the sleeve thereby enclosing the piezoelectric member between the sleeve and a radially inward surface of the shell, the shell configured to rotate relative to the sleeve, wherein the radially inward surface of the shell defines at least one of a plurality of grooves or a plurality of protrusions and wherein the piezoelectric member is configured to vibrate in response to the shell rotating about the shaft and deflecting the piezoelectric member from a neutral position; and
an energy storage device electrically coupled to the first energy harvesting roller.
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