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Mutual capacitance allows multi-touch operation where multiple fingers, palms or styli can be accurately tracked at the same time. [10] Self-capacitance sensors can have the same X-Y grid as mutual capacitance sensors, but the columns and rows operate independently. With self-capacitance, current senses the capacitive load of a finger on each ...
Capacitive displacement sensors share many similarities to eddy current (or inductive) displacement sensors; however capacitive sensors use an electric field as opposed to the magnetic field used by eddy current sensors [10] [11] This leads to a variety of differences between the two sensing technologies, with the most notable differences being ...
Capacitive displacement sensor; Capacitive sensing; Displacement sensor (general article) Flex sensor; Free fall sensor; Gravimeter; Gyroscopic sensor; Impact sensor; Inclinometer; Incremental encoder; Integrated circuit piezoelectric sensor; Laser rangefinder; Laser surface velocimeter; LIDAR; Linear encoder; Linear variable differential ...
Different proximity sensor targets demand different sensors. For example, a capacitive proximity sensor or photoelectric sensor might be suitable for a plastic target; an inductive proximity sensor always requires a metal target. [citation needed] Proximity sensors can have a high reliability and long functional life because of the absence of ...
However, mutual capacitance also has its limitations, such as its measurement noise being generally greater than self-capacitance. Capacitance switches are available commercially as integrated circuits from a number of manufacturers. These devices can also be used as a short-range proximity sensor.
Since the output of an inductive sensor has two possible states, an inductive sensor is sometimes referred to as an inductive proximity switch. [2] [3] The sensor consists of an induction loop or detector coil. Most often this is physically a number of turns of insulated magnet wire wound around a high magnetic permeability core, such as a ...
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