Vibration and dynamic acceleration sensing using capacitors
AssigneeTexas Instruments Incorporated
InventorKai Gossner
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Abstract
The present disclosure relates to an apparatus comprising at least one sensing capacitor and a controller, wherein the controller is configured to receive a signal from the at least one sensing capacitor indicative of a change of charge of the sensing capacitor, and wherein the controller is configured to determine an amount of force applied to the sensing capacitor, an acceleration of the sensing capacitor, a torsion of the sensing capacitor, a vibration of the sensing capacitor or a pulling force applied to the sensing capacitor based on the change of charge of the at least one sensing capacitor.
Claims20
Apparatus comprising:
- at least one sensing capacitor, and a controller, wherein the controller is configured to receive a signal from the at least one sensing capacitor indicative of a change of charge of the sensing capacitor, and wherein the controller is configured to determine a torsion of the sensing capacitor based on the change of charge of the at least one sensing capacitor.
Apparatus comprising:
- at least one sensing capacitor, and
- a controller configured to receive a signal from the at least one sensing capacitor indicative of a change of charge of the sensing capacitor, and wherein the controller is configured to determine a torsion of the sensing capacitor based on the change of charge of the at least one sensing capacitor,
- a charge amplifier connected between the at least one sensing capacitor and the controller, the charge amplifier including at least a first operational amplifier,
- wherein the at least one sensing capacitor is coupled to a printed circuit board (PCB).
A method comprising:
- measuring a change of charge of a sensing capacitor;
- and
- determining a torsion of the sensing capacitor based on the change of charge of the at least one sensing capacitor.
Dependencies are inferred from the claim text.