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Hall sensors with interleaved and/or moving average/sum rotational phase

A rotating phase and sensor technology, applied in the field of sensor systems, can solve the problems of hall sensor accuracy reduction, amplifier offset, etc.

Active Publication Date: 2021-09-07
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the accuracy of the Hall sensor may be degraded due to deflection caused by factors such as asymmetry of the Hall plate bridge of the Hall sensor, mechanical stress, etc.
Amplifiers that amplify the signal from the Hall sensor may introduce additional offset

Method used

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  • Hall sensors with interleaved and/or moving average/sum rotational phase
  • Hall sensors with interleaved and/or moving average/sum rotational phase
  • Hall sensors with interleaved and/or moving average/sum rotational phase

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Embodiment Construction

[0043] The present disclosure will now be described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout, and the structures and devices shown therein are not necessarily drawn to scale. As used herein, the terms "component," "system," "interface," etc., are intended to refer to computer-related entities, hardware, software (eg, to execute software), and / or firmware. For example, a component may be a processor (e.g., a microprocessor, controller, or other processing device), a process running on a processor, a controller, an object, an executable, a program, a storage device, a computer, a Tablet PC and / or user equipment (eg, mobile phone, etc.). For example, applications running on servers and servers can also be components. One or more components can reside within a process and a component can be localized on one computer and / or distributed between two or more computers. A set of elements or a set of other elements m...

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Abstract

The present disclosure relates to Hall sensors with interleaved and / or moving average / summed rotational phases. An example embodiment may include a sensor system comprising M (positive integers) of rotational current Hall sensors and a multiplexer, each sensor having N (integer numbers greater than 1) different rotational phases, During these rotational phases, each sensor can acquire sensor data, and the multiplexer can select the sensor data of the sensor according to the sequence of M×N rotational phase sensors. The M×N different rotational phases of the sensor sequence can be interleaved, the mean values ​​in the time domain of the N rotational phases being the same for each sensor. For each of the M sensors, a sum and / or average of one or more latest representations of sensor data from that sensor may be determined.

Description

technical field [0001] The present disclosure relates to sensor systems, and more particularly to systems and methods for employing rotational current Hall sensors with interleaved rotational phases and / or sliding averages / sums. Background technique [0002] A Hall effect sensor (or Hall sensor) can sense a magnetic field by generating a voltage that changes in response to the magnetic field. However, the accuracy of the Hall sensor may be degraded due to deflection caused by factors such as asymmetry of the Hall plate bridge of the Hall sensor, mechanical stress, and the like. Amplifiers that amplify the signal from the Hall sensors may introduce additional offsets. To remove these offsets, a spinning current technique can be employed, where current can be applied to the Hall sensor (and / or inverting amplifier and / or ADC (analog-to-digital) in different directions during two or more different phases of rotation. converter) input). Sensor signals from different rotational...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/07G01R15/20
CPCG01R15/202G01R33/07G01R33/0023G01R33/0094G01R33/075
Inventor M·莫茨
Owner INFINEON TECH AG