Arrow Flight Data Analysis Using Embedded Sensors
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Solution Overview
Problem
Current archery technologies lack effective methods for accurately analyzing and improving arrow flight dynamics, particularly in terms of stability and performance, due to limited data capture and analysis of flight data during the arrow's flight.
Innovation Solution
The development of electronic archery systems that include a docking station, electronic field point, and electronic nock, which capture and analyze flight data using accelerometers and shock sensors to determine arrow speed, energy, momentum, and stability, employing frequency analysis and vibration dampeners to enhance flight performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic sensors and data processing systems are added to analyze arrow flight dynamics, then measurement precision and analysis capability are improved, but device complexity increases
Solution Approach 1:
The electronic apparatus is nested within the arrow structure itself, with sensors, processors, and memory integrated into the arrow's components such as the shaft, nock, or field point. This allows flight data collection and analysis capabilities to be embedded in the moving object without requiring external measurement equipment, thereby improving measurement precision while managing system complexity through integrated design
Solution Approach 2:
The arrow-mounted system performs self-measurement and self-analysis of its own flight characteristics. The electronic sensors mounted on the arrow directly capture its flight data, and the onboard processor analyzes this data autonomously during flight, eliminating the need for complex external measurement systems and reducing overall device complexity while maintaining high measurement precision
2Measurement precision
If vibration analysis and frequency processing are performed on flight data, then stability analysis capability is improved, but loss of time in data processing increases
Solution Approach 1:
The electronic processor is configured to perform frequency analysis and vibration characterization of flight data in real-time during or immediately after the arrow's flight. By processing the data as it is collected rather than requiring post-flight analysis, the system provides stability analysis capability while minimizing data processing time delay
Solution Approach 2:
Complex mechanical vibration analysis methods are replaced with electronic signal processing techniques. The onboard microprocessor performs Fast Fourier Transform and frequency spectrum analysis on the accelerometer data electronically, enabling rapid stability analysis that would be time-consuming with traditional mechanical measurement and analysis methods
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
These systems provide detailed insights into arrow flight characteristics, enabling precise tuning of archery equipment and improving shot placement and consistency by analyzing flight data and adjusting vibration levels, leading to enhanced arrow stability and accuracy.
Implementation Method 1
determining a time-of-flight of the arrow; determining a distance between a location from which the arrow is loosed and a location of a target-face; providing, with an apparatus included in the arrow, data from at least a portion of a free flight of the arrow; and determining the instantaneous speed of the arrow
Implementation Method 2
In one embodiment, the time-of-flight is determined with data provided by at least one of a shock sensor and an accelerometer included in the apparatus
Implementation Method 3
employing frequency analysis and vibration dampeners to enhance flight performance
Data Source
AI summary
In one aspect, a method of determining an instantaneous speed of an arrow, includes determining a time-of-flight of the arrow; determining a distance between a location from which the arrow is loosed and a location of a target-face; providing, with an apparatus included in the arrow, data from at least a portion of a free flight of the arrow; and determining the instantaneous speed of the arrow for at least one point of the free-flight by employing each of: a) the time-of-flight; b) the distance; and c) at least some of the data provided by the apparatus.