Rotation Detector With Dedicated Power Channels for Accurate Position Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotation detectors face issues with inappropriate power supply to power generators, leading to erroneous detection.
Innovation Solution
A rotation detector with a magnet rotating together with a shaft, multiple power generation elements, and magnetic sensors, along with a generated power supply unit that supplies power only to the corresponding elements, determining the rotational position using magnetic sensors and storing the reference position in regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is supplied to multiple power generation elements simultaneously, then the system can operate continuously, but power supply errors occur leading to erroneous detection
Solution Approach 1:
The patent divides the power supply system into separate independent channels, with each power generation element having its dedicated power supply unit. This segmentation prevents power interference between elements and ensures that each element operates independently without affecting others, thereby eliminating erroneous detection caused by power supply errors.
Solution Approach 2:
The patent introduces a power supply selection unit that acts as an intermediary between the power generation elements and the magnetic sensors. This intermediary selectively connects only the required power supply element to the corresponding magnetic sensor, preventing power supply conflicts and ensuring accurate operation of each detection channel.
2Measurement precision
If multiple power generation elements are used, then detection coverage is improved, but power supply control becomes complex
Solution Approach 1:
The detection system is segmented into independent channels, with each channel consisting of a power generation element, its dedicated power supply unit, and corresponding magnetic sensors. This modular segmentation simplifies control by allowing each channel to operate independently, reducing the overall complexity of power supply control while maintaining high detection precision through multiple channels.
Solution Approach 2:
The power supply system dynamically selects and activates only the necessary power generation elements and corresponding magnetic sensors based on the current detection requirements. This dynamic control approach reduces unnecessary power supply connections and simplifies the control logic, while still providing comprehensive detection coverage when needed.
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
This configuration suppresses erroneous detection by ensuring appropriate power supply to the power generation elements, enhancing detection accuracy.
Implementation Method 1
a plurality of power generation elements that generate power according to a change in a magnetic field due to rotation of the magnet together with the rotary shaft
Implementation Method 2
a plurality of magnetic sensors each provided to a corresponding one of the plurality of power generation elements, wherein a rotational position of the rotary shaft is determined by using the plurality of magnetic sensors
Data Source
AI summary
Provided is a rotation detector capable of suppressing the occurrence of erroneous detection. Rotation detector includes magnet that rotates together with a rotary shaft, a plurality of power generation elements that generate power according to a change in a magnetic field due to rotation of magnet together with the rotary shaft, and a plurality of magnetic sensors provided to a corresponding one of the plurality of power generation elements. Rotation detector further includes information processor that determines a rotational position of the rotary shaft by using the plurality of magnetic sensors, and generated power supply unit that supplies the power generated by each of the plurality of power generation elements only to the corresponding one of the plurality of power generation elements.