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Magnetic sensor devices and methods for determining a rotation direction of a magnetic component about a rotation axis

A technology of magnetic sensor and direction of rotation, which is used in converting sensor output, using electromagnetic/magnetic devices to transmit the direction of sensing components, instruments, etc.

Active Publication Date: 2018-01-09
INFINEON TECH AG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

That is, conventional sensor devices based on the magnetoresistive effect can be used without these further processing elements

Method used

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  • Magnetic sensor devices and methods for determining a rotation direction of a magnetic component about a rotation axis
  • Magnetic sensor devices and methods for determining a rotation direction of a magnetic component about a rotation axis
  • Magnetic sensor devices and methods for determining a rotation direction of a magnetic component about a rotation axis

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Embodiment Construction

[0030] Various examples will now be described more fully with reference to the accompanying drawings in which some examples are illustrated. In the drawings, the thickness of lines, layers and / or regions may be exaggerated for clarity.

[0031] Accordingly, some specific examples thereof are shown in the drawings, and will be described in detail later, although further examples are capable of various modifications and alternative forms. However, this detailed description does not limit further examples to the particular forms described. Further examples may cover all modifications, equivalents, and alternatives falling within the scope of this disclosure. The same reference numerals refer to the same or similar elements throughout the description of the drawings, and when compared with each other, the same or similar elements may be implemented in the same or in a modified form, while providing the same or similar Feature.

[0032] It will be understood that when an element...

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Abstract

A magnetic sensor device for determining a rotation direction of a magnetic component about a rotation axis is provided. The magnetic sensor device includes a bridge circuit with a first half-bridge and a second half-bridge. Each of the first half-bridge and the second half-bridge comprises at least one magnetoresistive structure. Further, the magnetic sensor device includes an evaluation circuitconfigured to determine the rotation direction of the magnetic component based on a phase difference between an output signal of the first half-bridge and an output signal of the second half-bridge.

Description

technical field [0001] An example involves rotation detection of a magnetic assembly. In particular, examples relate to magnetic sensor devices and methods for determining the direction of rotation of a magnetic assembly about a rotational axis. Background technique [0002] Magnetic sensor devices based on the magnetoresistive effect exhibit improved sensitivity and improved jitter compared to conventional sensor devices based on the Hall effect. Correspondingly, the distance between the sensor device and the monitored magnetic assembly (eg target wheel or crankshaft) can be increased. [0003] For many applications (eg crankshaft sensors) detection of the direction of rotation of the monitored magnetic assembly is mandatory. Sensor devices based on the Hall effect are sensitive to vertical magnetic fields, while sensor devices based on the magnetoresistive effect are sensitive to horizontal magnetic fields. Therefore, there is usually a 90° phase shift between the outpu...

Claims

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Application Information

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IPC IPC(8): G01P13/04G01R33/09
CPCG01D5/145G01D5/2451G01D5/16
Inventor M.A.约内斯库T.韦尔特
Owner INFINEON TECH AG
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