Method and apparatus for a high output sensor system
View Patent ↗The present invention relates to the field of motion/movement sensors, detectors, and/or monitors, as well as other types of sensors. In particular, the present invention may provide, for example, a large pulsed output voltage in response to very low (or slow) sensed movement or environment changes, such as, temperature, pressure, and energy. The present invention relates, for example, to other available sensors and may provide an output high enough to turn on related processing circuitry from an “OFF” state. The present invention relates, among other things, to sensing various events via, for example, axially poled homopolymer polyvinyladine fluoride (PVDF) or other piezoelectric materials.
1. An apparatus for use as a sensor comprising
a plurality of piezoelectric elements, each of said piezoelectric elements having an output,
a rectification block on each said output of said piezoelectric elements,
a capacitive element connected to each of said rectification blocks to accumulate charge from said rectification block,
a signal phase delay element provided between said rectification block and said capacitive element, and
a sensor output connected to said capacitive element to supply a signal from said capacitive element.
2. The apparatus of claim 1 , further comprising a switching device connected to an output of said capacitive element.
3. The apparatus of claim 1 , wherein said rectification block is selected from a group consisting of a full-wave rectification block and a half-wave rectification block.
4. The apparatus of claim 1 , comprising three or more stacked piezoelectric elements.
5. The apparatus of claim 1 , wherein said signal phase delay element comprises an inductor.
6. The apparatus of claim 2 , wherein said switching device comprises a field effect transistor (FET).
7. The apparatus of claim 2 , wherein said switching device comprises multiple field effect transistors (FETs).
8. The apparatus of claim 2 , wherein said switching device comprises a bipolar transistor.
9. The apparatus of claim 2 , wherein said switching device comprises multiple bipolar transistors.
10. The apparatus of claim 2 , wherein said switching device comprises a relay or microelectromechancial systems (MEMS) relay.
11. The apparatus of claim 2 , wherein said switching device comprises an available timer circuit.
12. The apparatus of claim 2 , wherein said switching device comprises a direct micro-controller input.
13. The apparatus of claim 1 , wherein said apparatus comprises a means for detecting changes in position from gravitational effects on a structure rotating at an angle to the surface of a significant gravity source.
14. The apparatus of claim 13 , wherein said structure comprises a wheel.
15. The apparatus of claim 13 , wherein said angle comprises approximately 90 degrees.
16. The apparatus of claim 13 , wherein said gravity source comprises the earth.
17. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in position from movement of a structure the apparatus is mounted upon.
18. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in movement of a structure placed upon the apparatus.
19. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from a local electrical field.
20. The apparatus of claim 19 , wherein said electrical field comprises a field in the approximate range of 50 to 60 Hz.
21. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from low power sound energy.
22. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from ultrasound energy.
23. The apparatus of claim 1 , wherein one or more of said rectification blocks comprises a circuit board.
24. The apparatus of claim 1 , wherein one or more of said capacitive elements comprises a capacitor.
25. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in ambient power available from RF spectrum energy fields.
26. The apparatus of claim 1 , wherein said apparatus comprises means for detecting changes in magnetic fields.
27. An apparatus for use as a sensor comprising:
a plurality of piezoelectric elements of different geometric sizes arranged in a stack from largest to smallest, each of said piezoelectric elements having an output,
a rectification block on each said output of said piezoelectric elements,
a capacitive element connected to each of said rectification blocks to accumulate charge from said rectification block, and
a sensor output connected to said capacitive element to supply a signal from said capacitive element.
28. The apparatus of claim 27 , further comprising a switching device connected to an output of said capacitive element.
29. The apparatus of claim 27 , wherein said rectification block is selected from a group consisting of a full-wave rectification block and a half-wave rectification block.
30. The apparatus of claim 27 , comprising three or more stacked piezoelectric elements.
31. The apparatus of claim 27 , further comprising a signal phase delay element provided between said rectification block and said capacitive element.
32. The apparatus of claim 31 , wherein said signal phase delay element comprises an inductor.
33. The apparatus of claim 28 , wherein said switching device comprises a field effect transistor (FET).
34. The apparatus of claim 28 , wherein said switching device comprises multiple field effect transistors (FETs).
35. The apparatus of claim 28 , wherein said switching device comprises a bipolar transistor.
36. The apparatus of claim 28 , wherein said switching device comprises multiple bipolar transistors.
37. The apparatus of claim 28 , wherein said switching device comprises a relay or microelectromechancial systems (MEMS) relay.
38. The apparatus of claim 28 , wherein said switching device comprises an available timer circuit.
39. The apparatus of claim 28 , wherein said switching device comprises a direct micro-controller input.
40. The apparatus of claim 27 , wherein said apparatus comprises a means for detecting changes in position from gravitational effects on a structure rotating at an angle to the surface of a significant gravity source.
41. The apparatus of claim 40 , wherein said structure comprises a wheel.
42. The apparatus of claim 40 , wherein said angle comprises approximately 90 degrees.
43. The apparatus of claim 40 , wherein said gravity source comprises the earth.
44. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in position from movement of a structure the apparatus is mounted upon.
45. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in movement of a structure placed upon the apparatus.
46. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from a local electrical field.
47. The apparatus of claim 46 , wherein said electrical field comprises a field in the approximate range of 50 to 60 Hz.
48. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from low power sound energy.
49. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in frequency or amplitude available from ultrasound energy.
50. The apparatus of claim 27 , wherein one or more of said rectification blocks comprises a circuit board.
51. The apparatus of claim 27 , wherein one or more of said capacitive elements comprises a capacitor.
52. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in ambient power available from RF spectrum energy fields.
53. The apparatus of claim 27 , wherein said apparatus comprises means for detecting changes in magnetic fields.