A charge sensitive amplifier circuit for sensor frontend comprises an input node to be connected to a sensor to receive an input charge, and an output node to be connected to a charge conversion circuit. The charge sensitive amplifier circuit comprises a first transfer switch located between the input node and the output node to transfer the input charge to the output node. The charge sensitive amplifier circuit further comprises a second transfer switch located in parallel to the first transfer switch between the input node and the output node to transfer the input charge to the output node.

The present disclosure relates to a phased array antenna module. The phased array antenna module comprises: multiple antenna units, each of which comprises a first antenna electrode part, a second antenna electrode part spaced apart from the first antenna electrode part, a sensing electrode part electrically connected to the second antenna electrode part, and a ground electrode part spaced apart from the first antenna electrode part with the second antenna electrode part interposed therebetween; a capacitance sensing part to which the sensing electrode part is connected and which senses at least one among the capacitance change between the first antenna electrode part and the second antenna electrode part, the capacitance change between the first antenna electrode part and the ground electrode part, and the capacitance change between the second antenna electrode part and the ground electrode part, and outputs a capacitance sensing signal; and a module control part which is electrically connected to the capacitance sensing part and the second antenna electrode part of each of the antenna units, and controls the antenna units on the basis of the capacitance sensing signal generated by the capacitance sensing part.

Systems and methods for determining a touch input are provided. The systems and methods generally include measuring the peak voltage at an electrode over a measurement period and determining a touch input based on the peak voltage. The systems and methods can conserve computing resources by deferring digital signal processing until after a peak electrode capacitance has been sampled. The systems and methods are suitable for capacitive sensors using self-capacitance and capacitive sensors using mutual capacitance. The systems and methods are also suitable for capacitive buttons, track pads, and touch screens, among other implementations.

A method for calibrating a measuring device for a vehicle steering wheel, the measuring device comprising a detection sensor, and an acquisition unit, the calibrating method comprising the steps of: placing the vehicle steering wheel with the on-board detection sensor in a reference environment, carrying out a reference measurement, recording the level of the reference signal and/or adjusting and recording at least one initial threshold to be used by the electronic control unit to initiate a driver assistance action, depending on the level of the measured reference signal and/or recording a difference between the level of the reference signal and the initial threshold.

Systems and methods for determining a touch input are provided. The systems and methods generally include measuring the peak voltage at an electrode over a measurement period and determining a touch input based on the peak voltage. The systems and methods can conserve computing resources by deferring digital signal processing until after a peak electrode capacitance has been sampled. The systems and methods are suitable for capacitive sensors using self-capacitance and capacitive sensors using mutual capacitance. The systems and methods are also suitable for capacitive buttons, track pads, and touch screens, among other implementations.

A door handle includes door handle case, a first detection electrode and a second detection electrode disposed in the door handle case, and a controller connected to the first detection electrode and the second detection electrode. The controller separately measures a first capacitance between the first detection electrode and an operation body and a second capacitance between the second detection electrode and the operation body, and the controller determines whether a locking operation is performed by the operation body based on one or both of the first capacitance and the second capacitance.

There is provided a sensor unit for detecting a proximity state of an object at N detection positions, generating a composite detection signal in conformity with the sum of N detection signals obtained as a result of detection for N detection positions, and controlling a positive or negative polarity of the detection signal having a signal level in conformity with the proximity state at each of N detection positions, a sensor control unit for controlling the sensor unit for generating M composite detection signals having N polarity patterns set at N detection signals different from each other, and a signal regeneration unit for regenerating the signal level of the N detection signal based on the M composite detection signals generated by the sensor unit.

A capacitive sensor that includes: a sensing electrode having a capacitance to be measured; an alternating voltage source, configured to apply an alternating voltage to the sensing electrode; a capacitive first transfer device; a measurement circuit configured to measure the capacitance of the sensing electrode; and a switching arrangement. The switching arrangement is configured to alternately, in a first switching state, connect the first transfer device to the sensing electrode to enable a charge transfer from the sensing electrode to the first transfer device and, in a second switching state, connect the first transfer device to the measurement circuit to enable a charge transfer from the first transfer device to the measurement circuit.

A capacitance sensing circuit includes: a front-end circuit, a first subtracting and summing circuit and a capacitance judging circuit; wherein the front-end circuit is coupled to the detection circuit; the first subtracting and summing circuit is coupled between the front-end circuit and the capacitance judging circuit, and includes: a subtracting unit; a summing unit, coupled to the subtracting unit; a first converter, coupled between the summing unit and the capacitance judging unit; and a second converter, coupled between the first converter and the subtracting unit; and the capacitance judging circuit is configured to judge a capacitance change of the detection capacitor. According to the present application, resistance against noise may be improved.

A capacitive sensor device comprises a first sensor electrode, a second sensor electrode, and a processing system coupled to the first sensor electrode and the second sensor electrode. The processing system is configured to acquire a first capacitive measurement by emitting and receiving a first electrical signal with the first sensor electrode. The processing system is configured to acquire a second capacitive measurement by emitting and receiving a second electrical signal, wherein one of the first and second sensor electrodes performs the emitting and the other of the first and second sensor electrodes performs the receiving, and wherein the first and second capacitive measurements are non-degenerate. The processing system is configured to determine positional information using the first and second capacitive measurements.