A first converter converts an initial attitude in an Euler angle representation into an initial attitude represented by quaternion. An updating unit updates an attitude represented by quaternion by defining the initial attitude represented by quaternion as an initial value, successively substituting output values of the triaxial gyro sensor. A second converter converts the attitude represented by quaternion into an attitude in the Euler angle representation. An angular speed derivation unit derives an angular speed based on a time-dependent change in the attitude in the Euler angle representation. A controller adjusts a period of time for derivation by an initial attitude derivation unit based on a variance value of the output value of the triaxial acceleration sensor or a variance value of the output value of the triaxial gyro sensor, when the speed is lower than a threshold value.

A magnetic sensor module includes an axially polarized back-bias magnet having a body that radially extends from a magnet center axis and a bore extending along the magnet center axis. The magnet generates a radial bias magnetic field about a magnetization axis in a sensor plane. The magnetic field has a magnetic flux density of substantially zero along a perimeter of a zero-field closed loop located in the sensor plane. The magnetic sensor module includes a shim polepiece mechanically coupled to an end of the axially polarized back-bias magnet. The shim polepiece includes a second bore centered on a polepiece center axis that is aligned with the magnet center axis. The second bore extends through the shim polepiece along the polepiece center axis.

A magnetic sensor module includes an axially polarized back-bias magnet having a body that radially extends from a magnet center axis and a bore extending along the magnet center axis. The magnet generates a radial bias magnetic field about a magnetization axis in a sensor plane. The magnetic field has a magnetic flux density of substantially zero along a perimeter of a zero-field closed loop located in the sensor plane. The magnetic sensor module includes a shim polepiece mechanically coupled to an end of the axially polarized back-bias magnet. The shim polepiece includes a second bore centered on a polepiece center axis that is aligned with the magnet center axis. The second bore extends through the shim polepiece along the polepiece center axis.

Disclosed herein is a luminaire apparatus having an air cleaner attached thereto, which is connected by wires and cables so as to be vertically movable. More particularly, the luminaire apparatus enables a luminaire and air cleaner, which are considerably heavy, installed on a ceiling to be safely moved vertically using wires in order to perform replacement of light bulbs, replacement of air cleaner filters, troubleshooting, or maintenance, and is usable through supply of power to the luminaire and the air cleaner at a desired height by installing the air cleaner capable of vertically moving together with the luminaire and by installing power cables capable of supplying power even when the luminaire and the air cleaner are moved up and down.

A sensor device includes an excitation magnet which generates an alternating excitation magnetic field, an energy generator having a pulse wire module in which electric energy pulses are generatable via the alternating excitation magnetic field, at least one sensor element which senses a physical variable and which provides a sensor signal, an evaluation unit which evaluates the sensor signal, and a wireless data interface which is connected to the evaluation unit via a data connection. The at least one sensor element and the evaluation unit are each electrically connected to the energy generator and are suppliable with an electric energy thereby.

A method of sensing wheel rotation can include: sensing magnetic force information in an environment of a wheel by a magnetometer to obtain measured magnetic force information; generating relative magnetic force information by performing mathematical operation processing in accordance with the measured magnetic force information, where the relative magnetic force information does not change with geomagnetic field and does change with a rotation angle of a wheel; and obtaining angle information related to the rotation angle of the wheel in accordance with the relative magnetic force information.

A method for manufacturing a sensor for an automotive vehicle, the sensor includes an integrated circuit and a magnetic element. The method includes the steps of arranging the integrated circuit in a housing of a support zone of a leadframe formed in a metal base plate; the leadframe including branches constituting electrical tracks, electrically connecting the integrated circuit to the branches, placing the magnetic element against the support zone in line with the integrated circuit and at a predetermined fixed distance from the integrated circuit so as to form a space between the magnetic element and the integrated circuit, overmolding the assembly formed by the support zone, the integrated circuit and the magnetic element with a polyepoxide material so as to obtain an internal overmolding, overmolding the internal overmolding with a thermoplastic material so as to obtain the sensor.

A method for manufacturing a sensor for an automotive vehicle, the sensor includes an integrated circuit and a magnetic element. The method includes the steps of arranging the integrated circuit in a housing of a support zone of a leadframe formed in a metal base plate; the leadframe including branches constituting electrical tracks, electrically connecting the integrated circuit to the branches, placing the magnetic element against the support zone in line with the integrated circuit and at a predetermined fixed distance from the integrated circuit so as to form a space between the magnetic element and the integrated circuit, overmolding the assembly formed by the support zone, the integrated circuit and the magnetic element with a polyepoxide material so as to obtain an internal overmolding, overmolding the internal overmolding with a thermoplastic material so as to obtain the sensor.

A rotational speed sensor, including: a cylindrical sensor head having a measuring tip; and a tongue, which is arranged on an outer diameter of the sensor head, and which is formed to interact with a counter-contour of a fixing device as an anti-rotation lock for the rotational speed sensor. Also described are a related fixing device, a receiving device, a sensor system, and a method.

A rotational speed sensor, including: a cylindrical sensor head having a measuring tip; and a tongue, which is arranged on an outer diameter of the sensor head, and which is formed to interact with a counter-contour of a fixing device as an anti-rotation lock for the rotational speed sensor. Also described are a related fixing device, a receiving device, a sensor system, and a method.