A device for capacitive detection of an object with respect to a detection surface, including: at least one capacitive detection electrode, and detection electronics including at least one item of measurement electronic equipment, for: polarizing the at least one detection electrode at an alternating excitation potential (VG), different from a ground potential; measuring a measurement signal relative to an electrode-object capacitance; and the detection electronics also includes, for the measurement electronics, at least two separate calculation modules, operating in parallel, and supplying two independent detection signals for one and the same measurement signal originating from the measurement electronics.

A frame control system for an agricultural implement includes a first sensor configured to be coupled to a sub-frame of the agricultural implement and directed toward a soil surface. The first sensor is configured to emit a first output signal toward the soil surface and to receive a first return signal indicative of a first height of the sub-frame above the soil surface. The frame control system also includes a first sub-frame actuator configured to be coupled to the sub-frame and to a main frame of the agricultural implement. The first sub-frame actuator is configured to control a first position of the sub-frame relative to the main frame along a vertical axis. In addition, the frame control system includes a controller configured to control the first sub-frame actuator such that a difference between the first height and a target height is less than a threshold value.

Systems and methods may be implemented separately from (and external to) a battery system to detect swollen battery system components within a chassis enclosure of the information handling system, without any physical contact with the battery cells or battery system, and without requiring premature opening of the information handling system chassis enclosure to inspect for battery system swelling. A system user may be automatically warned of detected battery system swelling and/or battery system charging may be automatically terminated upon detected battery system swelling so that information handling system failure and/or system service costs that would otherwise be expended to repair damage caused by swollen battery system components may be prevented.

An orientation control system for an agricultural implement includes a first sensor configured to be positioned at a left end portion of a frame. The first sensor is configured to emit a first output signal toward a soil surface and to receive a first return signal indicative of a first height of the left end portion. The orientation control system also includes a second sensor configured to be positioned at a right end portion of the frame. The second sensor is configured to emit a second output signal toward the soil surface and to receive a second return signal indicative of a second height of the right end portion. In addition, the orientation control system includes a controller configured to control first, second, and third actuators such that a difference between the first height and the second height is less than a threshold value.

A proximity sensor unit includes a proximity sensor section including a sensor electrode capable of detecting a capacitance value according to a distance to an object to be detected in a detection direction and a moving device capable of moving the sensor electrode of the proximity sensor section or the object to be detected in the detection direction.

A displacement sensor includes a coil, an inverter electrically connected to the coil, the inverter being configured to generate an oscillation signal, a reducer electrically connected between the coil and an output terminal of the inverter, the reducer being configured to reduce the strength of the oscillation signal, and a frequency detector electrically connected to the inverter, the frequency detector being configured to detect an oscillation frequency of an oscillator circuit in response to a distance between a measurement target and the coil, the oscillator circuit including the coil, the inverter, and the reducer and having an oscillation frequency of 30 MHz or higher.

A capacitive measurement device for indicating when two surfaces moving relative to each other are spaced less than a predetermined distance apart. The device comprises a probe having an elongated conductor, an insulating core, a conducting inner guard, an insulating interlayer, and a conducting sheath. A portion of the conductor, insulating core and conducting inner guard form a probe tip which extends beyond the insulating interlayer and conducting sheath by a predetermined offset. The probe is configured to extend from a first surface by a predetermined distance and to generate a signal when the tip is contacted by a second surface.

Provided is an electrostatic capacitance sensor which can remove an influence of a noise occurring from a static eliminator or a driving source and accurately perform measurement even on electrostatic capacitance detected by a thin-type detection unit which can be passed to a finger surface of a wafer transfer robot. The present invention is provided with an AC supply source which supplies an AC voltage to a detection unit, a parasitic capacitance compensation circuit, an operational amplifier, a differential amplifier, a phase detection means, and a low pass filter. An operational amplification output terminal is connected to an inversion input terminal of the differential amplifier through a first band pass filter, the AC supply source is connected to a non-inversion input terminal of the differential amplifier through a second band pass filter, an output terminal of the differential amplifier is connected to an input terminal of the phase detection means, and the phase detection means takes, as a reference signal, an AC signal output from the AC supply source.

A back-biased magnetic field sensor uses one or more magnetic field sensing elements upon a substrate, each outside of a substrate region in which magnetic field lines are near perpendicular to the substrate and outside of which magnetic field lines are not to the substrate. The back-biased magnetic field sensor can sense an approaching and/or a retreating ferromagnetic object.

A back-biased magnetic field sensor can have one or more vertical Hall effect elements arranged within a substrate region of a substrate, wherein magnetic fields are oriented substantially vertical to the substrate within the substrate region when a ferromagnetic object is not proximate. When the ferromagnetic object becomes proximate, the magnetic field sensor can sense at least the proximity, and, in some embodiments, can also localize a position of the ferromagnetic object relative to the magnetic field sensor.