A multi-measurement apparatus using a search-coil type sensor includes: sensor modules, each of which has one or more sensors including respective housings having respective inner spaces, respective cores formed to be inserted into the inner spaces of the housings, and respective coils which are each wound around a portion of an outer circumferential surface of each of the housings, the portion corresponding to a position of each of the cores; impedance matching units that are connected to a plurality of the sensors, respectively, and perform impedance matching; and amplifiers that are connected to the impedance matching units, respectively, and amplify a fine current and voltage generated during approach of objects to the sensors.

A devise that will increase an inductive proximity sensor's detection distance and detection position. The devise uses a housing in combination with a sensor and axially magnetized magnet and a target magnet to achieve the increased detection distance and position. The devise can be defined as universal because it allows different manufacturers and sizes of sensors to be used and calibrated. A treaded end section of the devise allows connection of standard conduit fittings.

A sensor element of an inductive proximity sensor or distance sensor contains a coil arrangement with at least one excitation coil and at least one receiving coil and includes an electrically conductive shielding which contains a shielding cup that surrounds the coil arrangement laterally and on the rear face. A method operates the sensor element. The shielding of the sensor element further contains a flange which is provided on the front face of the sensor element, is connected to the shielding cup in an electrically conductive manner, and completely surrounds the coil arrangement.

In at least one embodiment, an apparatus including a pulse buffer (PB) converter. The PB converter including a housing, a printed circuit board (PCB), at least one inductor, and at least one capacitor is provided. The PCB is positioned in the housing and includes at least one first power switch and at least one second power switch positioned thereon. The at least one inductor is positioned in the housing and off board from the PCB to interface with the at least one first power switch and the at least second power switch. The at least one capacitor is positioned in the housing and off board from the PCB to interface with the at least one first power switch and the at least one second power switch to regulate an energy output to one or more vehicle batteries during a charging operation.

A front end for an inductive proximity sensor includes a coil for detecting an approaching metal object and a circuit board, wherein the coil is designed as a circuit board coil disposed in the circuit board, wherein a metal influencing element which is disposed in or on the circuit board has an opening to receive at least one electrical connecting element, wherein a through connection of the circuit board to an electrical connection plane, which serves for electrical connection of the circuit board to a control electronics of the proximity sensor, is made by the at least one electrical connecting element.

A vehicle door handle includes a sensor assembly for detecting an operation request. The door handle is fixed and actuates an electric lock. The sensor assembly includes a first capacitive sensor arranged in the door handle and oriented towards an inner side of the handle. It monitors a first handle section gripped when actuating the handle. Second and third sensors are arranged along an axial extension of the handle. The second sensor is oriented towards an outer side of the handle and monitors a touching from the outer side in a second handle section. The third sensor is oriented towards the inner side of the handle and monitors a touching from the inner side. The electronic control and evaluation device generates an opening signal when both the capacitive sensor detects a gripping of the door handle and the second sensor and the third sensor simultaneously each detect a touching.

A method of measuring target proximity comprising the steps of transmitting a magnetic field signal by a controller of a proximity sensor at a target, measuring impedance of an inductor of a proximity sensor, calculating a relative position of the target in relation to a sensor face, and providing a near/far output status of the target at a predetermined rate.

A method can include in a first phase of a sensing operation, controlling at least a first switch to energize a sensor inductance; in a second phase of the sensing operation that follows the first phase, controlling at least a second switch to couple the sensor inductance to a first modulator capacitance to induce a first fly-back current from the sensor inductance, the first fly-back current generating a first modulator voltage at the first modulator capacitance, and in response to the first modulator voltage, controlling at least a third switch to generate a balance current that flows in an opposite direction to the fly-back current at the first modulator node. The first and second phases can be repeated to generate a first modulator voltage at the first modulator capacitance. the modulator voltage can be converted into a digital value representing the sensor inductance. Related devices and systems are also disclosed.

A touch sensing device includes: at least one sensing coil disposed on a substrate; a sensing circuit unit configured to detect applied external pressure, based on a change in inductance of the at least one sensing coil; and a deformation inducing shaft configured to block one side of the at least one sensing coil in one direction and open another side of the at least one sensing coil in another direction.

The invention relates to an apparatus for detecting a key press comprising a circuit substrate, a key module with a key cap and a movement mechanism, and a device for detecting the movement of the key cap, wherein the movement mechanism has at least one movement element wherein this device comprises an electrical resonance circuit with at least one capacitor and with a primary coil and comprises a secondary coil wherein the device for detecting the movement of the key cap comprises a measuring device for detecting and/or processing at least one physical variable of the electrical resonance circuit, which variable changes during the movement of the key cap, and outputs at least one electrical signal that is dependent on the change in the physical variable.