Abstract:
A mutual capacitive touch sensing device is disclosed. The touch sensing device includes a mutual capacitive sensing controller having a plurality of distinct drive lines and a plurality of distinct sense lines; a source for driving a current or voltage separately though each drive line; and a mutual capacitance sensing circuit that monitors the capacitance at the sensing lines. The touch sensing device also includes a plurality of independent and spatially distinct mutual capacitive sensing nodes set up in a non two dimensional array. Each node includes a drive electrode that is spatially separated from a sense electrode. The drive electrode is coupled to one of the drive lines and the sense electrode is coupled to one of the sense lines. Each node is set up with a different combination of drive and sense line coupled thereto.
Abstract:
A capacitive proximity sensor comprising an emitter electrode (104) capacitively coupled to receive an electrode (102). A first active guard electrode (110), driven by the output of a unity gain amplifier (108), is provided in respect of the receive electrode (102), to shield parts thereof not facing a potential obstacle (122), and a grounded shield (126) is provided in respect of the emitter electrode (104) to shield parts thereof not facing a potential obstacle (122). A second active guard electrode (103) is provided between the emitter and receiver electrodes (104, 102), just behind the cover (106), which is also driven by the output of the amplifier (108). The second active guard electrode (103) acts to block shortened electric field lines (124) between the emitter and receiver electrodes (104, 102), thereby improving accuracy and reliability of the sensor.
Abstract:
Die Erfindung betrifft eine Bedieneinrichtung (10) für ein Fahrzeug, sowie ein Verfahren zum Betrieb einer solchen Bedieneinrichtung, insbesondere eine Bedieneinrichtung (10) zur Steuerung sicherheitsrelevanter Funktionen. Die Bedieneinrichtung (10) weist dazu wenigstens eine Bedienoberfläche (12) mit wenigstens einem Bedieneingabefeld (18) zur Bedieneingabe und ein Sensorsystem zum Erkennen einer Bedieneingabe im Bereich des Bedieneingabefeldes (18) auf, wobei das Sensorsystem wenigstens eine erste, kapazitive Sensoreinrichtung (14a) mit einer ersten, elektrisch leitfähigen Sensorstruktur und eine zweite, kapazitive Sensoreinrichtung (14b) mit einer zweiten, elektrisch leitfähigen Sensorstruktur aufweist, wobei die Sensorstrukturen dabei unterhalb der Bedienoberfläche (12) im Bereich des Bedieneingabefeldes (18) angeordnet sind. Die erste Sensorstruktur und die zweite Sensorstruktur sind zumindest in einem Teilbereich des Bedieneingabefeldes (18) jeweils kammartig und/oder mäanderförmig ausgebildet und miteinander kämmend angeordnet.
Abstract:
A capacitance sensing module includes a timer circuit configured to generate a repetitive trigger signal, a low power oscillator block configured to generate a clock signal having a higher frequency than the repetitive trigger signal, a sensing block coupled with the timer circuit and the oscillator block and configured to, in response to the repetitive trigger signal, detect a presence of a conductive object at a capacitive sensor button by applying an excitation signal based on the clock signal to the capacitive sensor button, and a wake logic block coupled with the sensing block and configured to transition a processing unit from a low power consumption state to a high power consumption state in response to the sensing block detecting the presence of the conductive object at the capacitive sensor button.
Abstract:
Embodiments of the present disclosure generally provide a grey water interface valve liquid level sensor system (30). The liquid level sensor system may deliver information about the water level and the water movement that occurs in a water reservoir (14). A control unit (16) may then activate a valve (18) to open so that the water can be removed via vacuum (20).
Abstract:
During operation of a capacitive proximity sensor (1) that is provided with at least two measuring electrodes (2, 3), a first capacitance measurement variable (K1) and a second capacitance measurement variable (K2) are detected, wherein the first capacitance measurement variable (K1) is correlated with the capacitance of at least one of the measuring electrodes (2) to earth (M), while the second capacitance measurement variable (K2) is correlated with the capacitance between at least one of the measuring electrodes (2) and at least one further measuring electrode (3). A change in the first capacitance measurement variable (K1) is evaluated together with a synchronous signal profile of the second capacitance measurement variable (K2) in order to distinguish a proximity of a conductor coupled electrically to earth from the proximity of dielectric matter. In this manner, a body part passing into the detection space (11) of the proximity sensor (1) can be distinguished effectively from other substances and objects, particularly water.
Abstract:
The invention relates to a capacitive sensor (2) for detecting an object, in particular for detecting the event of a collision in a mobile vehicle part. The sensor (2) comprises an electrode array (4) having at least one sensor electrode (6). The sensor (2) further comprises a signal generating circuit (7) located upstream of the at least one sensor electrode (5) for generating a transmission signal (SE), wherein the signal generating circuit (7) generates the transmission signal (SE) as a pulse signal having a trapezoid or triangular temporal pulse shape.
Abstract:
An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to, for an array of capacitive touch sensors with a proximally positioned electrotactile layer, compare the capacitance associated with a capacitive touch sensor of the array against a respective detection threshold to determine whether or not a touch input has occurred at the capacitive touch sensor by a stylus in capacitive coupling proximity to the capacitive touch sensor, wherein the detection threshold of one or more capacitive touch sensors of the array is set to be sufficient to inhibit the erroneous generation of a touch input signal at the one or more respective capacitive touch sensors caused by capacitive cross-coupling, via the electrotactile layer, to the capacitive touch sensor which is in capacitive coupling proximity to the stylus.