Coordinate Detector Sensor Position Adjusting Unit
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Solution Overview
Problem
Electronic information boards face challenges in maintaining coordinate detection accuracy due to vibrations during transportation, which cause shifts in the attached positions and angles of light sensor units, leading to interference with coordinate detection and increased production costs and complexity.
Innovation Solution
A coordinate detector with a sensor position adjusting unit that adjusts the rolling direction of light sensor units relative to optical reflective members, ensuring accurate coordinate detection by fine-tuning the position and angle of light emission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the height dimension of optical reflective members or the size of light sensor units is increased to prevent light deviation, then coordinate detection accuracy is improved, but the bezel size increases
Solution Approach 1:
The invention changes the parameter of light sensor unit orientation by introducing a rolling direction adjustment mechanism. Instead of increasing the size of optical components, the system adjusts the angular parameter of light sensor units to optimize light reception angles, thereby maintaining coordinate detection accuracy without increasing bezel size
Solution Approach 2:
The invention makes the light sensor unit orientation adjustable and adaptable through a rolling direction adjusting mechanism. This dynamic adjustment capability allows the system to compensate for position shifts and maintain optimal detection accuracy without requiring larger fixed-size components
2Measurement precision
If high accuracy in attaching optical units is required, then coordinate detection accuracy is improved, but additional securing processes are needed which degrade production efficiency and increase production cost
Solution Approach 1:
The invention replaces the need for high-precision fixed attachment with a dynamic adjustment mechanism. The rolling direction adjusting mechanism allows for post-assembly calibration, eliminating the need for additional securing processes and maintaining production efficiency while ensuring detection accuracy
Solution Approach 2:
The system includes an adjusting mechanism that enables self-calibration of the light sensor units. This self-adjustment capability eliminates the need for complex external securing processes, allowing standard attachment methods to suffice while still achieving high detection accuracy through subsequent automated or manual adjustment
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 solution enhances the accuracy and reliability of coordinate detection while reducing production costs and complexity by allowing for precise adjustment of light sensor positions, even after shifts due to vibrations, thus maintaining detection accuracy without increasing the bezel size.
Implementation Method 1
light (infrared radiation) emitted from the pair of the light sensor units is applied to two optical reflective members
Implementation Method 2
light passing through the touched position is blocked off and not received by the light sensor units. At this moment, the coordinate positions are computed by the triangulation method based on the optical angles.
Data Source
AI summary
A coordinate detector includes a pair of light sensor units disposed on a side of a display part having a display surface to be touched by a target to be detected, optical reflective members respectively disposed on remaining three sides of the display part, and a sensor position adjusting unit configured to adjust a rolling direction of the light sensor unit with respect to the optical reflective members. When the target touches the display surface, coordinates of the target are detected based on light reflected off the optical reflective members that is received by the light sensor units.