A speed sensor for measuring a speed of an object moving relative to the speed sensor, including: a speed sensor housing for providing sliding and/or frictional and/or positively locking insertion into a fixed receptacle, wherein the speed sensor housing houses an injection molded part which is made of plastic and into which at least part of a speed sensor element is injected; wherein the injection molded part has at least one outer recess, on its outer circumferential surface facing an inner face of a wall of the speed sensor housing, wherein an empty outer chamber is formed between each boundary surface of an outer recess and the inner face of the wall of the speed sensor housing, and/or wherein at least one inner recess, which forms an empty inner chamber, is formed inside the injection molded part. Also described are a related driver assistance system and a motor vehicle.

A speed sensor for measuring a speed of an object moving relative to the speed sensor, including: a speed sensor housing for providing sliding and/or frictional and/or positively locking insertion into a fixed receptacle, wherein the speed sensor housing houses an injection molded part which is made of plastic and into which at least part of a speed sensor element is injected; wherein the injection molded part has at least one outer recess, on its outer circumferential surface facing an inner face of a wall of the speed sensor housing, wherein an empty outer chamber is formed between each boundary surface of an outer recess and the inner face of the wall of the speed sensor housing, and/or wherein at least one inner recess, which forms an empty inner chamber, is formed inside the injection molded part. Also described are a related driver assistance system and a motor vehicle.

A sensor system for a bicycle. The system system includes a magnetic field sensor and an acceleration sensor unit having at least one acceleration sensor, and an evaluation unit that is designed to acquire signals from the magnetic field sensor and the acceleration sensor unit. The magnetic field sensor and the acceleration sensor unit are designed for attachment to a wheel of the bicycle. The magnetic field sensor and the acceleration sensor unit are fixed relative to each other and are situated at a predefined distance with respect to an axis of rotation. The evaluation unit is designed to evaluate the signals of the magnetic field sensor and the acceleration sensor unit to ascertain a rotational speed and/or orientation of the magnetic field sensor and/or acceleration sensor unit with respect to the axis of rotation.

A sensor system for a bicycle. The system system includes a magnetic field sensor and an acceleration sensor unit having at least one acceleration sensor, and an evaluation unit that is designed to acquire signals from the magnetic field sensor and the acceleration sensor unit. The magnetic field sensor and the acceleration sensor unit are designed for attachment to a wheel of the bicycle. The magnetic field sensor and the acceleration sensor unit are fixed relative to each other and are situated at a predefined distance with respect to an axis of rotation. The evaluation unit is designed to evaluate the signals of the magnetic field sensor and the acceleration sensor unit to ascertain a rotational speed and/or orientation of the magnetic field sensor and/or acceleration sensor unit with respect to the axis of rotation.

In one aspect, an integrated circuit (IC) includes a magnetic-field sensor. The magnetic-field sensor includes digital circuitry that includes a first and second analog-to-digital converter (ADC). The digital circuitry is configured to receive a first and second analog output signals and, using the first and second ADC, configured to convert the first and second analog output signals to a first and second digital signals. The magnetic-field sensor also includes diagnostic circuitry configured to receive, from the digital circuitry, an input signal related to the first and/or the second digital signals and configured to provide a test signal at a pin of the IC. In response to a range parameter, the diagnostic circuitry is further configured to provide the test signal comprising a range of codes from the first and/or the second ADC corresponding to the range parameter.

A cable with sensor, including a cable, and a sensor section provided at an end of the cable. The sensor section includes a plurality of magnetic sensors each including a detection section that includes a magnetism detection element and a cover covering the magnetism detection element, and a housing portion coating the plurality of magnetic sensors and the cable. The cable is extending out of the housing portion. The respective detection sections are arranged to be aligned with each other in a direction intersecting with an extending direction of the cable from the housing portion of the cable.

A cable with sensor, including a cable, and a sensor section provided at an end of the cable. The sensor section includes a plurality of magnetic sensors each including a detection section that includes a magnetism detection element and a cover covering the magnetism detection element, and a housing portion coating the plurality of magnetic sensors and the cable. The cable is extending out of the housing portion. The respective detection sections are arranged to be aligned with each other in a direction intersecting with an extending direction of the cable from the housing portion of the cable.

A magnetic sensor system includes two magnetic sensors that detect components in two directions of an external magnetic field, an additional magnetic field generation section, and a signal processing circuit. The additional magnetic field generation section is capable of generating two additional magnetic fields for use in measuring the sensitivities of the two magnetic sensors. The signal processing circuit includes a sensitivity measurement processing section and a detection signal correction processing section. The sensitivity measurement processing section measures the sensitivities based on data concerning changes in the detection signals of the two magnetic sensors when the additional magnetic field generation section is controlled to generate two additional magnetic fields. The detection signal correction processing section performs processing for reducing change components attributable to the two additional magnetic fields on the detection signals of the two magnetic sensors.

The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.

A system and method for determining a position and or speed of a rotating shaft includes a target wheel for securement to a rotatable shaft, the target wheel including a plurality of North/South pole pairs, each pole of each North/South pole pairs being essentially the same size; and a sensor assembly. The sensor assembly includes a first magnetic sensor array for sensing the pole pairs to provide a cosine signal and a sine signal and a second magnetic sensor array for sensing the pole pairs to provide a cosine signal and a sine signal, wherein the second magnetic sensor array is disposed transverse to the first magnetic sensor array. An electronic processor is configured to receive inputs from the first magnetic sensor array and the second magnetic sensor array, and to determine a position and/or speed of the shaft.