The invention relates to a sensor device with a beaker-like sensor housing and a wired sensor, wherein the beaker-like sensor housing has an introduction region for insertion of the wired sensor, an orientation region for orientating the wired sensor, and a placement region for final placement and securing of the wired sensor close to an end face of the sensor. The orientation region has an internal cross-sectional contour which is adapted to the cross-sectional contour of the sensor, and the sensor is introduced into a curable material in its placement region in the sensor housing to fixedly secure the sensor in the placement region against movement.

A system and method for protecting a genset from pole slip is disclosed. The system may comprise a generator, a prime mover and a controller. The generator includes a stator and a rotor. The prime mover is configured to drive rotation of the rotor. The controller may be configured to: determine mechanical status of the generator based on data associated with a translational displacement of the rotor; determine electrical status of the generator based on (a) a load angle or (b) the load angle and a rate of change of the load angle associated with rotation of the rotor in the stator; determine an operating condition of the generator based on fusion of the mechanical status and the electrical status; if the operating condition is a pole-slip-warning, activate an output member to display or emit a warning; and, if the operating condition is a pole-slip, activate a protective action.

A system and method for protecting a genset from pole slip is disclosed. The system may comprise a generator, a prime mover and a controller. The generator includes a stator and a rotor. The prime mover is configured to drive rotation of the rotor. The controller may be configured to: determine mechanical status of the generator based on data associated with a translational displacement of the rotor; determine electrical status of the generator based on (a) a load angle or (b) the load angle and a rate of change of the load angle associated with rotation of the rotor in the stator; determine an operating condition of the generator based on fusion of the mechanical status and the electrical status; if the operating condition is a pole-slip-warning, activate an output member to display or emit a warning; and, if the operating condition is a pole-slip, activate a protective action.

A method and a device for measuring the torque in the drivetrain (1) of a wind power plant is described, having at least two incremental encoders (7, 8) which are positioned at two different positions on at least one shaft (3) of the drivetrain (1) and which each supply periodic rotational signals, wherein the phases of the rotational signals are evaluated in order to detect a phase shift, and a torque of the shaft (1) is determined from the phase shift. The detected phase shift is corrected as a function of a zero load phase shift (A.sub.Zero), using a rigidity factor K, wherein, in order to determine the zero load phase shift (A.sub.Zero) and the rigidity factor K, in-situ calibration is carried out before and/or between the torque-determining processes. The in-situ calibration is performed at zero load of the wind power plant, i.e. below a rated rotational speed and with a generator torque equal to zero, and at the rated load of the wind power plant, i.e. at the rated rotational speed and with a generator torque greater than zero.

Apparatus and associated methods relate to generating a frequency spectrum weighting function for use in estimating a rotational frequency of the rotating member. The estimation of the rotational frequency is based on vibrations sensed by an accelerometer remotely located from a rotating member. The frequency spectrum weighting function is generated by a supervised learning method. The method includes receiving a set of test vectors. The test vectors include a rotational frequency value of the rotating member and a vibrational frequency spectrum corresponding to vibrations propagated to the accelerometer. The vibrations include vibrations caused by the rotating member rotating at the rotational frequency. The method includes calculating a test weighting function, and then weighting the vibrational frequency spectra by the test weighting function. The method includes calculating a vector score indicative of whether the weighted vibrational frequency spectra promote the identification of the rotational frequency of the rotating member.

A road surface information collection device includes a first sampling unit that samples acceleration sensor's detection results with a first sampling cycle to obtain first sampling data, a position calculator that calculates an acceleration sensor's rotational position based on changes in first sampling data, a second sampling unit that is activated based on a condition that the acceleration sensor is positioned within a first predetermined range including a back side of a point on the tire in contact with the ground, and that samples detection results of the acceleration sensor with a second sampling cycle shorter than first sampling cycle to obtain second sampling data as the road surface information, a speed calculator that detects a rotation speed of the tire based on changes in the first sampling data, and a first predetermined range determination unit that changes the first predetermined range in accordance with the rotation speed of tire.

A vehicle position detecting device according to an embodiment includes a wheel speed acquisition unit, a skid detection unit, a vehicle body speed calculation unit, and a position calculation unit. The wheel speed acquisition unit acquires a wheel speed of a wheel of a vehicle corresponding to rotation of the wheel. The skid detection unit detects a skid of the wheel. The vehicle body speed calculation unit calculates, when the skid is not detected by the skid detection unit, a vehicle body speed corresponding to the speed of a vehicle body of the vehicle based on the wheel speed acquired by the wheel speed acquisition unit, and corrects, in response to detection of the skid by the skid detection unit, the wheel speed acquired by the wheel speed acquisition unit based on correction information and calculates the vehicle body speed based on the corrected wheel speed. The position calculation unit calculates the position of the vehicle based on the vehicle body speed calculated by the vehicle body speed calculation unit depending on the presence of the skid.

A rotational speed detecting device that detects an engine rotational speed includes: a frequency estimation unit for estimating a frequency of vehicle interior sound as an estimated frequency based on a period of the vehicle interior sound detected by a microphone; an analysis frequency band setting unit for setting an analysis frequency band based on the estimated frequency; a frequency detection unit for performing spectrum analysis of the vehicle interior sound by discrete Fourier transform in the analysis frequency band and detecting the frequency of the vehicle interior sound as a detection frequency; and a rotational speed calculation unit for calculating an engine rotational speed based on the detection frequency.

In one embodiment, an apparatus includes a different amplifier. A node in the apparatus receives a motor-current signal and an output of the differential amplifier. The motor-current signal represents a motor current of a DC brush motor. Moreover, a first input of the differential amplifier is coupled to a node. The apparatus also includes a low-pass filter with an input receiving a motor-current signal and an output coupled to a second input of the differential amplifier. The apparatus additionally includes a comparator with a first input coupled to the output of the differential amplifier and a second input coupled to a referential voltage.

In one embodiment, an apparatus includes a different amplifier. A node in the apparatus receives a motor-current signal and an output of the differential amplifier. The motor-current signal represents a motor current of a DC brush motor. Moreover, a first input of the differential amplifier is coupled to a node. The apparatus also includes a low-pass filter with an input receiving a motor-current signal and an output coupled to a second input of the differential amplifier. The apparatus additionally includes a comparator with a first input coupled to the output of the differential amplifier and a second input coupled to a referential voltage.