Multi-contact Position Detection for Hangung Target Boards
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Solution Overview
Problem
Existing position detection systems for Hangung target boards in Hangung, a sport combining dart and archery, face errors in sensing the position of thrown pins due to inconsistent pressure application and restoration, leading to inaccurate scoring.
Innovation Solution
A multi-contact type position detection apparatus comprising a first and second membrane board with orthogonal or parallel signal lines and dots arranged at specific intervals based on the pin's magnetic body diameter, allowing for precise sensing of pin positions by detecting pressure application and restoration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pin applies pressure to the membrane board, then the position can be detected, but the pressure may not be consistently restored to the original state causing detection errors
Solution Approach 1:
The membrane board is divided into multiple contact areas with dots arranged at specific intervals. When the pin applies pressure, only the dots in the contact area are activated, allowing the system to detect the position based on which dots were pressed. This segmentation enables precise position detection while the membrane board's elastic properties ensure consistent restoration of all dots to their original states after pressure is applied.
2Device complexity
If dots are arranged at larger intervals, then the structure is simpler, but the position detection precision decreases
Solution Approach 1:
The patent optimizes the dot arrangement parameters (interval and diameter) based on the pin's magnetic body diameter. By setting the dot interval to k/2±A and dot diameter to k/8±A (where k is the magnetic body diameter), the system achieves the optimal balance between structural simplicity and detection precision. This parameter optimization allows for accurate position detection while maintaining a relatively simple dot arrangement structure.
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
The apparatus minimizes errors in position detection by ensuring consistent pressure application and restoration, providing accurate scoring in Hangung and potentially other target-based games using magnetic pins.
Implementation Method 1
a magnetic body which provides adhesive force to a pin
Implementation Method 2
an area to which pressure is applied is dented due to throwing of the pin and then restored to an original state
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
A multi-contact type position detection apparatus for a target board is disclosed. The multi-contact type position detection apparatus for a target board, according to one embodiment of the present invention, comprises: a first membrane board having a plurality of first signal lines formed in a first direction; a second membrane board having a plurality of second signal lines formed in a second direction; and a plurality of dots which are formed on the first membrane board or the second membrane board such that the first membrane plate and the second membrane plate are spaced at a predetermined distance from each other, wherein the plurality of dots can be arranged at a distance of "k/2±A (A is 1%~2% of k)" when a magnetic body diameter of a pin attached on the target board is "kmm".