Rotation Detector Segmented Power Supply 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 the shaft, multiple power generation elements, and magnetic sensors, where power is supplied only to corresponding sensors, determining the rotational position based on power generation and detection information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power generators are supplied with power without corresponding magnetic sensors, then the device structure is simplified, but erroneous detection occurs due to inappropriate power supply
Solution Approach 1:
The patent divides the power supply system into separate channels, where each power generation element has its own dedicated magnetic sensor and power supply path. This segmentation ensures that power is appropriately supplied to each sensor-component pair, preventing erroneous detection while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
Each power generation element serves itself by generating power that is directly supplied to its corresponding magnetic sensor. This self-service mechanism eliminates the need for complex centralized power distribution, simplifying the overall device structure while ensuring reliable power supply to each detection unit.
2Power
If multiple power generation elements are used without corresponding magnetic sensors, then power generation capability is increased, but detection reliability deteriorates
Solution Approach 1:
The patent assigns dedicated magnetic sensors to each power generation element, creating separate detection channels. This segmentation ensures that each power generation element's output is properly monitored by its corresponding sensor, maintaining detection reliability while supporting enhanced power generation capability through multiple elements.
Solution Approach 2:
Each power generation element-magnetic sensor pair operates with localized quality control, where the power and detection functions are optimized for each specific component pair. This local optimization ensures reliable detection while allowing the system to scale power generation capability by adding more element-sensor pairs.
3Adaptability or versatility
If magnetic sensors are supplied with power from inappropriate sources, then power supply flexibility is improved, but detection accuracy deteriorates due to erroneous detection
Solution Approach 1:
The patent implements segmented power supply paths where each magnetic sensor receives power exclusively from its corresponding power generation element. This segmentation provides adaptability by allowing independent power management for each sensor while ensuring measurement precision through appropriate power sources, preventing erroneous detection.
Solution Approach 2:
The patent introduces intermediate power supply units that act as mediators between power generation elements and magnetic sensors. These intermediaries ensure that power is appropriately transferred from each power generation element to its corresponding sensor, maintaining detection accuracy while providing flexible power supply management.
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
Suppresses erroneous detection by ensuring appropriate power supply to sensors, 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, whereby each of the plurality of magnetic sensors is disposed at the same location as the corresponding one of the plurality of power generation elements
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
Provided is a rotation detector capable of suppressing the occurrence of erroneous detection. Rotation detector (14) includes magnet (20) that rotates together with a rotary shaft, a plurality of power generation elements (22) and (24) that generate power according to a change in a magnetic field due to rotation of magnet (20) together with the rotary shaft, and a plurality of magnetic sensors (26) and (28) provided to a corresponding one of the plurality of power generation elements (22) and (24). Rotation detector (14) further includes information processor (56) that determines a rotational position of the rotary shaft by using the plurality of magnetic sensors (26) and (28), and generated power supply unit (46) that supplies the power generated by each of the plurality of power generation elements (22) and (24) only to the corresponding one of the plurality of power generation elements.