Optical Arrow Tuning for Skew and Speed Measurement
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Solution Overview
Problem
Existing arrow tuning methods, such as paper tuning, fail to accurately measure arrow speed and provide comprehensive insights into skew and speed, are limited by environmental factors, and require separate tools and expert assistance, making them inefficient and cumbersome.
Innovation Solution
A system comprising first and second light detection units with parallel planar laser fans and light sensors, integrated circuitry, and a mobile app to measure and display arrow skew and speed, allowing for remote assistance and data tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If paper tuning is used to measure arrow skew, then skew detection is achieved, but arrow speed cannot be measured and separate tools are required
Solution Approach 1:
The patent combines skew detection and speed measurement into a single integrated optical system. The light detection units with laser sources and sensor arrays simultaneously perform both functions that previously required separate tools (paper tuning for skew and chronograph for speed), resolving the technical contradiction by merging multiple measurement capabilities into one device.
Solution Approach 2:
The optical measurement system is designed to perform multiple functions: detecting arrow skew through light interruption patterns and measuring arrow speed through timing mechanisms. This multi-functional approach eliminates the need for separate specialized tools, directly addressing the contradiction between measurement precision and device complexity.
2Measurement precision
If paper tuning is used, then skew detection is possible, but environmental factors like humidity and temperature affect accuracy
Solution Approach 1:
The patent replaces the mechanical paper-based detection system with an optical measurement system using laser sources and light sensors. This substitution eliminates the environmental sensitivity of paper (to humidity and temperature) while maintaining skew detection capability, as optical components are not affected by these environmental factors in the same way.
Solution Approach 2:
The invention changes the measurement medium from physical paper to optical fields (laser light). This parameter change from material-based to field-based measurement removes the harmful environmental effects that paper experiences, as light propagation is not significantly affected by humidity or temperature variations in the measurement environment.
3Loss of information
If manual documentation of tear patterns is used, then tuning data can be recorded, but time-consuming and prone to human error
Solution Approach 1:
The patent replaces manual visual documentation with automated electronic data capture and processing. The light sensors electronically record the arrow's flight parameters, and computer software automatically processes this data to determine skew and speed, eliminating manual documentation entirely. This resolves the contradiction by removing human error and time consumption associated with manual recording.
Solution Approach 2:
The system incorporates automated feedback through computer software that processes sensor data and provides immediate results. This feedback mechanism eliminates the need for manual analysis and documentation, automatically capturing and processing tuning data to provide accurate, real-time measurements without human intervention, thereby reducing both time loss and information loss.
4Measurement precision
If expert assistance is sought for arrow tuning, then accurate tuning can be achieved, but requires travel to pro shop and expert availability
Solution Approach 1:
The patent enables archers to perform their own arrow tuning using the portable optical measurement system. By providing accurate skew and speed measurements in the field, the system eliminates the need to travel to pro shops for expert assistance. Archers can independently diagnose and adjust their arrow setups based on the device's measurements, resolving the contradiction between tuning accuracy and ease of operation.
Solution Approach 2:
The optical measurement device acts as an intermediary between the archer and the arrow tuning process. It provides the objective data and measurement capabilities that previously required expert interpretation, enabling archers to make informed tuning decisions independently. This intermediary tool bridges the gap between professional expertise and amateur capability, improving accessibility while maintaining accuracy.
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
Accurately measures and displays arrow skew and speed, providing a comprehensive tuning solution that is independent of environmental conditions and expert presence, enabling efficient and precise tuning adjustments.
Implementation Method 1
a line laser source configured to emit a planar fan of laser light... an array of spaced-apart light sensors configured to lie in the planar fan of laser light
Implementation Method 2
each light detection unit includes a separate array of spaced-apart light sensors configured to lie in the planar fan of laser light... configured to sense their respective fan of laser light
Data Source
AI summary
An archery tuning apparatus includes two light detection units, each comprising a line laser source emitting a planar fan of laser light and a curved array of spaced-apart light sensors. The units are configured with parallel laser fans, creating an overlap target region when viewed along a normal axis. The curved sensor arrays, with radii of curvature approximating their irradiation distances, optimize detection accuracy. Integrated circuitry and software collect and analyze data from arrows shot through the target region during tuning sessions. The apparatus connects to a mobile device, which stores and displays tuning session information through a dedicated app. This system provides archers with precise measurements of arrow speed and skew, offering advantages over traditional paper tuning methods. The mobile interface allows for easy data management, equipment tracking, and remote technical assistance, enhancing the overall archery tuning experience.