Golf Distance Measurement Using Green Boundary Verification
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Solution Overview
Problem
Conventional distance measurement devices for golf courses inaccurately measure the distance to a pin on the green due to the laser beam hitting objects outside the green, leading to incorrect perception of the pin's position.
Innovation Solution
A distance measurement device that includes a storage unit with reference information for golf course greens, a current position identifying unit, a measuring unit, and a display processing unit that distinguishes between measurements within and outside the green by using a reference position and edge positions to display results differently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a laser beam is emitted to measure distance to a position on the green, then distance measurement is achieved, but the measurement may incorrectly identify objects outside the green (e.g., trees) as the pin position
Solution Approach 1:
The patent introduces an intermediary verification system that uses pre-stored green boundary data as a reference framework. The measured position is medially verified against this boundary data to determine whether it falls within the green area, thereby preventing misidentification of external objects as the pin position.
Solution Approach 2:
The system implements feedback by comparing the measured position with the stored green boundary information and providing feedback indication when the measured position is determined to be outside the green. This feedback loop allows the user to re-measure if the initial measurement is invalid, improving both reliability and accuracy.
2Ease of operation
If conventional distance measurement is performed without verification, then the device is simple to operate, but the user cannot determine whether the measured position is correct
Solution Approach 1:
The system provides self-service by automatically performing the verification function using pre-stored green boundary data. The device itself checks whether the measured position is valid without requiring the user to manually verify or input additional information, maintaining ease of operation while preventing information loss.
Solution Approach 2:
The green boundary data is prepared and stored in advance before the measurement process. This preliminary action of pre-storing reference information enables rapid verification during measurement without adding operational complexity, thus maintaining simplicity while providing complete measurement validity information.
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
Enhances accuracy by clearly indicating whether the measured distance is to the pin within the green, preventing misinterpretation and allowing for correct re-measurement.
Implementation Method 1
a laser unit that emits a laser beam L
Implementation Method 2
measuring a distance to the measurement target on the basis of a time elapsed from emission of the laser beam L to reception of the reflected light
Implementation Method 3
a sensor unit that senses the reflected light of the laser beam L
Data Source
AI summary
A distance measurement device includes: a storage unit that stores reference information indicating a reference position within a green of a golf course and a plurality of edge positions on an edge of the green; a current position identifying unit that identifies a current position of the distance measurement device; a measuring unit that measures a distance from the current position to a measurement target and a direction of the measurement target with respect to the current position; a measurement target position identifying unit; and a display processing unit that causes a display unit to display measurement results in different modes depending on whether at least one edge position on a straight line connecting the reference position and the measurement target position lies between the reference position and the measurement target position.