Angle Sensing Device Stationary Sensor Magnetic Field Source
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Solution Overview
Problem
Traditional magnetic sensing type angle sensing technologies cannot be used in applications where a sensor cannot be installed on a rotating shaft, limiting their applicability.
Innovation Solution
An angle sensing device that includes a first object, a second object, a magnetic field source, and a first magnetic sensor, where the second object is rotated with respect to the first object, allowing the magnetic field source connected to the second object to be sensed by the first magnetic sensor, enabling angle measurement without installing a sensor on the rotating shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic sensor is installed on a rotating shaft for angle sensing, then angle measurement can be implemented, but the sensor is subject to mechanical wear and environmental interference over time
Solution Approach 1:
The patent extracts the magnetic sensor from the rotating shaft environment and places it on a stationary component. The magnetic field source remains on the rotating part while the sensor stays stationary, eliminating mechanical wear and environmental exposure to the sensor while maintaining angle measurement capability through magnetic field detection
Solution Approach 2:
The patent replaces the traditional mechanical contact-based angle sensing with a non-contact magnetic field sensing system. By using magnetic field interaction between the rotating magnetic field source and stationary magnetic sensor, the system eliminates mechanical wear and improves reliability without requiring physical contact or sensor installation on the rotating shaft
2Adaptability or versatility
If a magnetic sensor is installed on a rotating shaft, then angle sensing can be performed, but the application is limited to scenarios where sensor installation on rotating shafts is permitted
Solution Approach 1:
The patent extracts the magnetic sensor from the rotating shaft and relocates it to a stationary component. This extraction removes the installation constraint on rotating shafts, allowing the system to be applied in scenarios where rotating shaft sensor installation is not permitted, thereby expanding adaptability
Solution Approach 2:
Instead of placing the sensor on the rotating part, the patent inverts the traditional approach by placing the magnetic field source on the rotating component and the sensor on the stationary component. This inversion eliminates the need for rotating shaft sensor installation while maintaining angle measurement functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable angle sensing without the need for a sensor on the rotating shaft, maintaining long-term efficacy and resistance to environmental interference.
Implementation Method 1
a magnetic field source and a first magnetic sensor... the first magnetic sensor is configured to sense a magnetic field generated by the magnetic field source
Data Source
AI summary
An angle sensing device including a first object, a second object, a magnetic field source, and a first magnetic sensor is provided. The second object is adapted to be rotated with respect to the first object, so that an inclined angle of the second object with respect to the first object is changed. The magnetic field source is connected to the second object. The first magnetic sensor is connected to the first object, and configured to sense a magnetic field generated by the magnetic field source. When the second object is rotated with respect to the first object, the magnetic field sensed by the first magnetic sensor changes, so that an output signal of the first magnetic sensor corresponding to the magnetic field changes.