摘要:
A capacitive touch pad includes an electrode board, a plurality of capacitive touch sensor pads, and a cover. The electrode board has touch sensor circuitry formed thereon. The plurality of capacitive touch sensor pads is formed in an array over the touch pad circuitry of the printed circuit board. The plurality of capacitive touch sensor pads is spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads. The cover is positioned over and covering substantially all of the plurality of capacitive touch sensor pads. The cover has a first cavity with a first depth, where the first cavity is shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads to dampen capacitive coupling between adjacent touch pads.
摘要:
Devices having adjustable polarizers and related operating methods are provided. An exemplary electronic device includes one or more sensing arrangements, a polarization arrangement including a polarizer, and a control module coupled to the one or more sensing arrangements and the polarization arrangement. The control module determines an angle for the polarizer based at least in part on output from the one or more sensing arrangements and operates the polarization arrangement to achieve the angle. In one or more exemplary embodiments, the angle corresponds to an orientation of the polarizer in a plane substantially orthogonal to a line-of-sight that is configured to result in the polarizer absorbing incident light rays emanating from the sun that are aligned with the line-of-sight.
摘要:
A liquid level sensor device (10) includes a liquid level sensor element (14), a capacitance-to-voltage converter (16), and a controller (18). The liquid level sensor element (14) comprises (i) at least two sets of N conductive electrodes (22) and (ii) M sense lines (S1-S7), where M is greater than or equal to N within each set of the at least two sets of conductive electrodes. Each of the M sense lines couples to select ones of the N conductive electrodes of the at least two sets of conductive electrodes to form a number of L sets of parallel coupled conductive electrodes, where L equals M. The capacitance-to-voltage converter (16) periodically measures a capacitance of the L sets of parallel coupled conductive electrodes for each of the M sense lines. The controller (18) establishes initial measured baseline capacitance values for each of the L sets of parallel coupled conductive electrodes and an initial liquid level height value. The controller (18) also detects transitions in the measured capacitance of the L sets of parallel coupled conductive electrodes. Responsive to the detected transitions corresponding to incremental changes in measured capacitance values, the controller updates the liquid level height value.
摘要:
A liquid level sensor device (10) includes a liquid level sensor element (14), a capacitance-to-voltage converter (16), and a controller (18). The liquid level sensor element (14) comprises (i) at least two sets of N conductive electrodes (22) and (ii) M sense lines (S1-S7), where M is greater than or equal to N within each set of the at least two sets of conductive electrodes. Each of the M sense lines couples to select ones of the N conductive electrodes of the at least two sets of conductive electrodes to form a number of L sets of parallel coupled conductive electrodes, where L equals M. The capacitance-to-voltage converter (16) periodically measures a capacitance of the L sets of parallel coupled conductive electrodes for each of the M sense lines. The controller (18) establishes initial measured baseline capacitance values for each of the L sets of parallel coupled conductive electrodes and an initial liquid level height value. The controller (18) also detects transitions in the measured capacitance of the L sets of parallel coupled conductive electrodes. Responsive to the detected transitions corresponding to incremental changes in measured capacitance values, the controller updates the liquid level height value.