This application provides a capacitance detection circuit for detecting capacitance of a capacitor element within a capacitor array. The circuit includes a capacitance detection module for detecting a first capacitance of a first capacitor set, a second capacitance of a second capacitor set, and a third capacitance of the third capacitor set, the first capacitor set comprising the capacitor element and a row capacitor element in the same row of the capacitor array as the capacitor element, the second capacitor set comprising the capacitor element and a column capacitor element in the same column of the capacitor array as the capacitor element, the third capacitor set comprising the row capacitor element and the column capacitor element; and a processing module, configured to obtain the capacitance of the capacitor element according to the first capacitance, the second capacitance and the third capacitance.

A capacitance detection device for detecting a capacitance between a detection electrode and an object in proximity to the detection electrode includes the detection electrode configured to detect a capacitance between the detection electrode and the object, an active shield electrode disposed in proximity to the detection electrode, a voltage output circuit for outputting an alternating voltage to be supplied to the active shield electrode, a first adjustment circuit for adjusting an amplitude of an alternating voltage output from the voltage output circuit, and a first operational amplifier for amplifying and outputting a voltage difference between an inverting input terminal thereof connected to one end of the detection electrode and a non-inverting input terminal thereof to which an alternating voltage adjusted by the first adjustment circuit is applied. The detection electrode has, between one end and the other end thereof, a resistance value from 5 kΩ to 270 kΩ.

A gas sensor for detecting a physical and/or chemical value of an analysis gas, a corresponding manufacturing method, and operating method. The gas sensor is based on the principle of a thermal conductivity measurement with the aid of a sensor structure including a double meander structure made up of two resistor lines, as part of a Wheatstone bridge circuit, on a diaphragm of a substrate. The two resistor lines are energized in opposite directions as a function of the detected temperature. The physical and/or chemical value(s) of the analysis gas are/is subsequently determined as a function of the voltages detected at the double meander structure.

An apparatus comprises a signal generator; first and second electrodes, the second electrode being connected to a first terminal of the signal generator; a processor; and a first switch configured to connect the first electrode to the processor, the first switch having a first position and a second position. The processor is configured to determine one or more values of a first electrical parameter based on a signal received from the first electrode via the first switch in the first position, and to determine one or more values of a second electrical parameter based on a signal received from the first electrode via the first switch in the second position.

A capacitance sensor includes a switch control unit that performs a first switching process that turns on a first switch and then repeatedly performs a second switching process that complementarily switches off and on second and third switches that are respectively connected to second and third capacitors; an obtaining unit that calculates, as a sensor output value, a number of times the second switching process is repeated until a magnitude relationship reverses between an intermediate potential and a reference potential; a calculation unit that calculates a sensor output corrected value obtained by correcting the sensor output value such that a resolution becomes uniform; and a determination unit that determines whether a detection target exists from a magnitude relationship between a sensor output difference value and a determination threshold value.

A method includes providing a current flowing through a first flying capacitor of a switched-capacitor power converter, measuring a first voltage at one terminal of the first flying capacitor at a first voltage measurement time instant, measuring a second voltage at the one terminal of the first flying capacitor at a second voltage measurement time instant, and calculating a capacitance value of the first flying capacitor based on the first voltage, the second voltage, the first voltage measurement time instant and the second voltage measurement time instant.

The present invention is related to a method for proximity sensing and an applied electronic device thereof. The present invention provides that a movement signal is generated according to a detection data, a move baseline data and a move threshold and cooperated with a proximity signal for generating a judgement signal to judge if the human body or the object body is close to the electronic device.

A door handle assembly for a motor vehicle door may include first and second housing components configured to be secured together to form a housing with inner surfaces of the components facing one another, the housing configured to be mounted to the motor vehicle door to define a door handle, a first sensor is disposed along a first detection surface defined by at least a portion of an outer surface of the housing, and a second sensor is disposed along a second detection surface defined by at least another portion of the outer surface of the housing, wherein signals produced by the first and second sensors are configured to enable any of locking, unlocking, latching, unlatching, automatically opening and automatically closing of the motor vehicle door.

A capacitive sensor includes a switching capacitor circuit, a comparator, and a charge dissipation circuit. The switching capacitor circuit reciprocally couples a sensing capacitor in series with a modulation capacitor during a first switching phase and discharges the sensing capacitor during a second switching phase. The comparator is coupled to compare a voltage potential on the modulation capacitor to a reference and to generate a modulation signal in response. The charge dissipation circuit is coupled to the modulation capacitor to selectively discharge the modulation capacitor in response to the modulation signal.

One inductive sensor is configured to maintain a fixed frequency in a resonant circuit. One apparatus includes an inductance-to-digital converter (LDC). The LDC includes a digital filter to measure an inductance change of a sensor and convert the inductance change to a digital value. The LDC further includes a digital control loop to maintain a fixed frequency in the sensor. The sensor forms an oscillator in the digital control loop. An output of the digital control loop is representative of the inductance change of the sensor.