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.

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 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 capacitive sensor with a plurality of sense inputs connectable to capacitive sense electrodes and a common reference input, each sense input and the reference input can be put in a measure state, in a ground state, or in a shield state. The sensor can be equipped with external reference capacitors between each of the sense input and the common reference terminal. The reference capacitor can be read individually by selectively pulling one of the input terminals to ground and driving the other to be equipotential with the reference input.

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.

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 device for detecting an object with respect to a detection surface including: a measurement electrode; at least one guard electrode, at the same alternating potential as the measurement electrode; at least one module for measuring a first signal with respect to the capacitance (C.sub.eo), called electrode-object capacitance, formed between said measurement electrode and said object; and
at least one electrode, called polarization electrode, placed opposite the object, and polarized at the ground potential (G) so as to polarize the object by capacitive coupling.

A device for detecting an object with respect to a detection surface including: a measurement electrode; at least one guard electrode, at the same alternating potential as the measurement electrode; at least one module for measuring a first signal with respect to the capacitance (C.sub.eo), called electrode-object capacitance, formed between said measurement electrode and said object; and
at least one electrode, called polarization electrode, placed opposite the object, and polarized at the ground potential (G) so as to polarize the object by capacitive coupling.

Examples are disclosed that relate to sensing a position of a surface proximate to a resonant LC sensor. One example provides a method on a sensing device comprising one or more resonant LC sensors each configured to output a signal responsive to a position of a surface proximate to the resonant LC sensor. The method comprises, for each LC sensor, generating an oscillating signal on an antenna of the resonant LC sensor and detecting a near-field response of the resonant LC sensor at a selected frequency.

A proximity sensor for a portable wireless connected device, the sensor being arranged to determine whether a part of a user's body is near the portable connected wireless device, The sensor generates a time-averaged proximity that is asserted when the device is brought near a part of a user's body for a given time and may be periodically reset momentarily during the periods of proximity. An integration time comparable with that used in SAR testing, such that the sensor may be used advantageously to reduce the radio power emitted by a portable device when it is near the body, can be obtained by a sigma/delta modulator configured as rate-compression unit.