Cardio-respiration transducer
First Claim
1. A laminated, sheet-like transducer for electrical connection connected to electronic circuit means responsive to changing mechanical forces applied to said transducer, comprising:
- a top flexible plate including a first surface having a matrix of uniformly spaced-apart first convex members,a bottom flexible plate including a second surface having a matrix of uniformly spaced-apart second convex members aligned with the spaces between said first convex members,an electret made of a synthetic resin polymer sandwiched between said first and second surfaces of said top and bottom plates, said electret producing electrical charges when deformed due to said first and second convex members pressing against and horizontally stretching said electret in response to said changing mechanical forces, andelectrodes attached to opposite surfaces of said electret, said electrodes forming a uniformly spaced-apart, electrically interconnected electrode configuration on at least one surface of said electret, said electrodes sensing said electrical charges producing a signal for transmission to said electronic circuit means which is proportional to the magnitude of said changing mechanical forces.
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Accused Products
Abstract
A laminated, sheet-like transducer is disclosed which produces an output signal in response to changing mechanical forces applied thereto. The transducer includes a top flexible plate with a matrix of uniformly spaced-apart convex members on one surface and a bottom flexible plate with a matrix of uniformly spaced-apart convex members on one surface. The convex members on the surface of one plate are aligned with the spaces between the convex members on the surface of the other plate. A synthetic resin polymer electret film is sandwiched between the convex members of each plate and becomes deformed when the convex members press against and horizontally stretch the electret film due to the changing mechanical forces applied to the transducer. Electrodes are connected to opposite surfaces of the electret film and form, at least on one surface, a uniformly spaced-apart electrically interconnected electrode configuration. The electrodes sense the electrical charges in the electret film and produce a signal proportional to the magnitude of the changing mechanical forces which induce the electrical charges.
114 Citations
23 Claims
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1. A laminated, sheet-like transducer for electrical connection connected to electronic circuit means responsive to changing mechanical forces applied to said transducer, comprising:
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a top flexible plate including a first surface having a matrix of uniformly spaced-apart first convex members, a bottom flexible plate including a second surface having a matrix of uniformly spaced-apart second convex members aligned with the spaces between said first convex members, an electret made of a synthetic resin polymer sandwiched between said first and second surfaces of said top and bottom plates, said electret producing electrical charges when deformed due to said first and second convex members pressing against and horizontally stretching said electret in response to said changing mechanical forces, and electrodes attached to opposite surfaces of said electret, said electrodes forming a uniformly spaced-apart, electrically interconnected electrode configuration on at least one surface of said electret, said electrodes sensing said electrical charges producing a signal for transmission to said electronic circuit means which is proportional to the magnitude of said changing mechanical forces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification