Capacitive Position Sensor
First Claim
1. A method comprising:
- receiving one or more first signals indicating one or more first capacitive couplings of an object with a sensing element that comprises a sensing path that comprises a length, the first capacitive couplings corresponding to the object coming into proximity with the sensing element at a first position along the sensing path of the sensing elementdetermining based on one or more of the first signals the first position of the object along the sensing path;
setting a parameter to an initial value based on the first position of the object along the sensing path, the initial value comprising a particular parameter value and being associated with a range of paratemeter values, the range of parameter values being associated with the length of the sensing path;
receiving one or more second signals indicating one or more second capacitive couplings of the object with the sensing element, the second capacitive couplings corresponding to a displacement of the object along the sensing path from the first position; and
determining based on one or more of the second signals the displacement of the object along the sensing path; and
adjusting the parameter within the range of paratemeter values based on the displacement of the object along the sensing path.
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Abstract
In one embodiment, a method includes receiving one or more first signals indicating one or more first capacitive couplings of an object with a sensing element that comprises a sensing path that comprises a length. The first capacitive couplings correspond to the object coming into proximity with the sensing element at a first position along the sensing path of the sensing element. The method includes determining based on one or more of the first signals the first position of the object along the sensing path and setting a parameter to an initial value based on the first position of the object along the sensing path. The initial value includes a particular parameter value and is associated with a range of paratemeter values. The range of parameter values is associated with the length of the sensing path.
25 Citations
19 Claims
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1. A method comprising:
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receiving one or more first signals indicating one or more first capacitive couplings of an object with a sensing element that comprises a sensing path that comprises a length, the first capacitive couplings corresponding to the object coming into proximity with the sensing element at a first position along the sensing path of the sensing element determining based on one or more of the first signals the first position of the object along the sensing path; setting a parameter to an initial value based on the first position of the object along the sensing path, the initial value comprising a particular parameter value and being associated with a range of paratemeter values, the range of parameter values being associated with the length of the sensing path; receiving one or more second signals indicating one or more second capacitive couplings of the object with the sensing element, the second capacitive couplings corresponding to a displacement of the object along the sensing path from the first position; and determining based on one or more of the second signals the displacement of the object along the sensing path; and adjusting the parameter within the range of paratemeter values based on the displacement of the object along the sensing path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. One or more computer-readable non-transitory storage media embodying logic that is operable when executed to:
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receive one or more first signals indicating one or more first capacitive couplings of an object with a sensing element that comprises a sensing path that comprises a length, the first capacitive couplings corresponding to the object coming into proximity with the sensing element at a first position along the sensing path of the sensing element determine based on one or more of the first signals the first position of the object along the sensing path; set a parameter to an initial value based on the first position of the object along the sensing path, the initial value comprising a particular parameter value and being associated with a range of parameter values, the range of parameter values being associated with the length of the sensing path; receive one or more second signals indicating one or more second capacitive couplings of the object with the sensing element, the second capacitive couplings corresponding to a displacement of the object along the sensing path from the first position; and determine based on one or more of the second signals the displacement of the object along the sensing path; and adjust the parameter within range of parameter values based on the displacement of the object along the sensing path. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus comprising:
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a sensing element that comprises a sensing path that comprises a length; and one or more computer-readable non-transitory storage media embodying logic that is operable when executed to; receive one or more first signals indicating one or more first capacitive couplings of an object with the sensing element, the first capacitive couplings corresponding to the object coming into proximity with the sensing element at a first position along the sensing path of the sensing element determine based on one or more of the first signals the first position of the object along the sensing path; set a parameter to an initial value based on the first position of the object along the sensing path, the initial value comprising a particular parameter value and being associated with a range of parameter values, the range of parameter values being associated with the length of the sensing path; receive one or more second signals indicating one or more second capacitive couplings of the object with the sensing element, the second capacitive couplings corresponding to a displacement of the object along the sensing path from the first position; and determine based on one or more of the second signals the displacement of the object along the sensing path; and adjust the parameter within range of parameter values based on the displacement of the object along the sensing path.
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Specification