Position Detection Device Using Spatial Pattern Encoding
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Solution Overview
Problem
Existing position detection devices become overly complex as the number of switching positions increases, complicating the structure and functionality.
Innovation Solution
A position detection device comprising a first member, a second member, a plurality of detected components, and a detector group, where the second member moves relative to the first member, and the detector group on the second member detects the relative position based on a detection pattern from the plurality of detectors, allowing for a simple structure to detect multiple positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a slide switching unit with multiple switching positions is used to detect relative positions, then the number of detectable positions increases, but the structure becomes more complicated and requires more parts
Solution Approach 1:
The detection target is divided into multiple detected components (first, second, third detected components) arranged at different positions. Each component can be detected by the detector group independently, allowing multiple position states to be identified using a single detector group, thereby avoiding the need for multiple switching positions
Solution Approach 2:
Instead of using multiple switching positions along one dimension (which increases complexity), the patent uses multiple detected components arranged in a spatial pattern. The detector group reads the detection pattern from these components to determine position, effectively using spatial arrangement in another dimension to encode position information without increasing structural complexity
2Adaptability or versatility
If more switching positions are added to detect more relative positions, then detection capability improves, but the number of parts increases and structure becomes complicated
Solution Approach 1:
A single detector group is designed to perform multiple detection functions by reading different detection patterns from the arranged detected components. This universal detector group can identify multiple relative positions without requiring separate detectors for each position, thereby maintaining versatility while reducing the quantity of parts
Solution Approach 2:
Instead of creating multiple physical switching mechanisms for different positions, the patent uses multiple detected components that represent different position states. The detector group reads these component patterns to determine position, effectively using information copying rather than physical duplication, which reduces the number of parts while maintaining detection capability
Data Source
AI summary
A position detection device includes a first member, a second member, a plurality of detected components, a detector group, and a controller. The second member is opposed the first member and is configured to move relative to the first member in a specific direction. The plurality of detected components are disposed on the first member and faces the second member. The detector group is disposed on the second member and includes a plurality of detectors configured to detect the plurality of detected components. The controller is configured to detect a relative position of the second member relative to the first member based on a detection pattern in which detection results of the plurality of detectors are arranged in a row.