Abstract: The invention relates to an axle assembly of a heavy goods vehicle, comprising a pivot bearing steering rotational axis (X), a wheel support comprising at least one wheel that is mounted thereon so as to be rotatable about a wheel rotational axis (Z), the wheel rotational axis (Z) being arranged behind the steering rotational axis (X), in the travel direction (V), in every deflection state of the axle assembly, during straight travel, and a unit that is adjustable about the steering rotational axis (X) when the wheel support is rotated, the adjustable unit being adjustable between two operating states, specifically a forwards travel operating state in which it damps the rotational movement of the wheel support about the steering rotational axis (X), and a reverse travel operating state in which it introduces a steering force, which steers the axle assembly, into the axle assembly.

Abstract: An ultrasonic device includes a substrate, a transmitter disposed over the substrate, the transmitter including an ultrasonic transmitting transducer configured to generate ultrasonic signals, and a receiver disposed over the substrate, the receiver including an ultrasonic receiving transducer configured to sense ultrasonic signals. The ultrasonic device further includes a first horn-shaped acoustic channel, wherein a material of at least one portion of the first horn-shaped acoustic channel is the same as a material of at least one portion of the transmitter or the receiver.

Abstract: The invention relates to an axle assembly of a heavy goods vehicle, comprising a pivot bearing steering rotational axis (X), a wheel support comprising at least one wheel that is mounted thereon so as to be rotatable about a wheel rotational axis (Z), the wheel rotational axis (Z) being arranged behind the steering rotational axis (X), in the travel direction (V), in every deflection state of the axle assembly, during straight travel, and a unit that is adjustable about the steering rotational axis (X) when the wheel support is rotated, the adjustable unit being adjustable between two operating states, specifically a forwards travel operating state in which it damps the rotational movement of the wheel support about the steering rotational axis (X), and a reverse travel operating state in which it introduces a steering force, which steers the axle assembly, into the axle assembly.

Abstract: A pot detection sensor for an induction hob has an air-core coil with at least two turns and has a carrier for the air-core coil. A length of the air-core coil can be at least five times, advantageously ten times, a width of the air-core coil. Diffusor means can be arranged, as a housing, over at least one lighting means for the purpose of equalizing a lighting effect of the one lighting means, wherein a single and continuous diffusor means is provided for all of the lighting means on a carrier. The diffusor means can form a housing over the at least one lighting means and also around the at least one lighting means. The air-core coil is advantageously wound around this housing.

Abstract: An induction heating device comprises a frequency converter that generates a high-frequency drive voltage from an intermediate circuit voltage generated at least temporarily as a function of an AC mains voltage, a resonant circuit having an induction heating coil, with the drive voltage applied to the resonant circuit, and a temperature detection device that determines a temperature of a cooking vessel base which is heated by means of the induction heating coil. An auxiliary voltage source generated the intermediate circuit voltage over predefined time periods at a constant level. The frequency converter generates the drive voltage over time periods such that the resonant circuit oscillates at a natural resonant frequency in a substantially de-attenuated manner, and the temperature detection device further measuring at least one oscillation parameter over the time periods, and to evaluate the at least one measured oscillation parameter in order to determine the temperature.

Abstract: A method of operating an acoustic system includes detecting an ultrasonic sound signal and pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal. The method includes sending a signal to at least one electronic component when the received ultrasonic sound signal is the desired ultrasonic sound signal. The method includes operating the microphone in a lower power state when the received ultrasonic sound signal is not the desired ultrasonic sound signal.

Abstract: A vibrational sensor comprises a microelectromechanical (MEMS) microphone having a base and a lid defining an enclosure, a MEMS acoustic pressure sensor within the enclosure, and a port defining an opening through the enclosure and material that is arranged to plug the port of the MEMS microphone. In embodiments, the MEMS microphone further includes an integrated circuit within the enclosure that is electrically connected to the MEMS acoustic pressure sensor. In some embodiments, the integrated circuit is configured to bias and buffer the MEMS acoustic pressure sensor. In these and other embodiments, the integrated circuit includes circuitry for conditioning and processing electrical signals generated by the MEMS acoustic pressure sensor. In embodiments, the material is arranged with respect to the port so as to cause the MEMS acoustical pressure sensor to sense vibrational energy rather than acoustic energy as in a conventional MEMS microphone.

Abstract: A touch sensitive device including a front panel having a touch surface and a back surface opposite the touch surface. The touch sensitive device further includes one or more vibration transducers mounted to the back surface, and a controller electronically connected to the vibration transducer. The controller receives, from the vibration transducer, a vibration signal, extracts feature information corresponding to predetermined features from the vibration signal, determines, based on the feature information, that a touch occurred within a predefined area of the touch surface, and outputs a signal indicating that the touch occurred within the predefined area of the touch surface.

Abstract: An ultrasonic actuation apparatus includes a piezoelectric transducer producing a first ultrasonic signal; a second transducer; and a platen, the platen being directly and/or acoustically coupled to the piezoelectric transducer and the second transducer. The second transducer may be a MEMS microphone. The second transducer is configured to receive the first ultrasonic signal at a first time, and a second ultrasonic signal at second time. The second ultrasonic signal has been modified from the first ultrasonic signal in correspondence with an object being in contact with the platen.

Abstract: A microphone includes a base; a micro electro mechanical system (MEMS) device disposed on the base, the MEMS device configured to convert sound into a first electrical signal; an integrated circuit disposed on the base and coupled to the MEMS device; a photo diode disposed on the base, the photo diode configured to convert light into a second electrical signal. At least one of the first electrical signal and the second electrical signal is processed by the integrated circuit.

Abstract: In accordance with one aspect of the disclosure, a method of operating an acoustic system including detecting an ultrasonic sound signal and pattern matching the received ultrasonic sound signal to determine when the received ultrasonic sound signal is a desired ultrasonic sound signal. The method includes sending a signal to at least one electronic component when the received ultrasonic sound signal is the desired ultrasonic sound signal. The method includes operating the microphone in a lower power state when the received ultrasonic sound signal is not the desired ultrasonic sound signal.

Abstract: In accordance with one aspect of the disclosure, an acoustic apparatus is provided included a transducer, a signal generator, a buffering module, and a proximity detection module. A switching module is coupled to the transducer, signal generator, the buffering module, and the proximity detection module.

Abstract: In accordance with one aspect of the disclosure, an acoustic apparatus is provided including a first transducer, a second transducer, a signal generator coupled to the first transducer, and a proximity detection module coupled to the second transducer. A buffering module is coupled to the first and second transducers and is configured to process analog signals received from the second transducer.

Abstract: Approaches are provided for an acoustic apparatus including a base, a transducer coupled to the base, an acoustic interface assembly, and a cover disposed on the base and enclosing the acoustic interface assembly and the transducer. The cover includes a port extending through the cover. The acoustic interface assembly includes an inlet that extends from a first surface of the acoustic interface assembly to a second surface of the acoustic interface assembly. The inlet is at least partially filled with a porous material. The transducer is disposed proximal to the acoustic interface assembly such that the inlet of the acoustic interface assembly couples the transducer to the port extending through the cover.

Abstract: A micro electro mechanical system (MEMS) microphone includes a MEMS device, a flash memory coupled to the MEMS device, and an external port coupled to the flash memory. The external port is configured to be selectively coupled to an external programming device. The external programming device selectively reads first information from the flash memory and writes second information to the flash memory without the use of a one-time fuse.

Abstract: An acoustic apparatus includes a first acoustic sensor that has a first sensitivity and a first output signal; a second acoustic sensor that has a sensitivity, the second sensitivity is less than the first sensitivity, and the second acoustic sensor has a second output signal; and a blending module that is coupled to the first acoustic sensor and the second acoustic sensor. The blending module is configured to selectively blend the first output signal and the second output signal to create a blended output signal.

Abstract: The invention may enable provision of a method for facilitating operation of an induction heating device, and a pot detection method for an induction heating device and to an induction heating device. The induction heating device is characterized by determining a low point of a resonant cycle on a linking node of a parallel resonant circuit and a switching element, determining a low point voltage at the low point of the resonant cycle and switching on the switching element at the low point of the resonant cycle for a cycle duration that is determined depending on the low point voltage in such a manner that a low point voltage does not exceed a predetermined maximum value in the following resonant cycles.

Abstract: The invention relates to a method for operating an induction heating device. The induction heating device comprises an induction coil and a frequency converter for producing a control voltage for the induction coil. The frequency converter comprises a rectifier rectifying an alternating supply voltage (UN), an intermediate circuit capacitor, looped in between output terminals of the rectifier and equalizing the rectified voltage (UG), and at least one controllable switching element, looped in between the output terminals of the rectifier. According to the invention, in a predetermined discharge interval (INT) before a zero crossing (ND) of the alternating supply voltage (UN), the intermediate circuit capacitor is discharged to a threshold value by controlling the at least one switching element before the induction coil is controlled in order to produce an adjustable heating capacity.

Abstract: An induction heating device comprises a frequency converter that generates a high-frequency drive voltage from an intermediate circuit voltage generated at least temporarily as a function of an AC mains voltage, a resonant circuit having an induction heating coil, with the drive voltage applied to the resonant circuit, and a temperature detection device that determines a temperature of a cooking vessel base which is heated by means of the induction heating coil. An auxiliary voltage source generated the intermediate circuit voltage over predefined time periods at a constant level. The frequency converter generates the drive voltage over time periods such that the resonant circuit oscillates at a natural resonant frequency in a substantially de-attenuated manner, and the temperature detection device further measuring at least one oscillation parameter over the time periods, and to evaluate the at least one measured oscillation parameter in order to determine the temperature.

Abstract: The invention relates to a method for operating an induction heating device, to a pot detection method for an induction heating device and to an induction heating device. The method for operating the induction heating device is characterized by determining a low point of a resonant cycle on a linking node (N1) of a parallel resonant circuit and a switching element (24), determining a low point voltage at the low point of the resonant cycle and switching on the switching element (24) at the low point of the resonant cycle for a cycle duration that is determined depending on the low point voltage in such a manner that a low point voltage does not exceed a predetermined maximum value in the following resonant cycles.