Archery Projectile 3D Accelerometer Sensing for Stabilization Points
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Solution Overview
Problem
Existing archery projectile measurement systems are not adaptable to various arrow shafts and broadheads, impact trajectory, and fail to provide high-resolution, three-dimensional data for stabilization points during flight, often saturating accelerometers and neglecting changing flight conditions.
Innovation Solution
An archery projectile facility with a three-dimensional accelerometer system that generates acceleration information, processed by a body processor and transmitted via a transmitter, allowing for precise determination of stabilization points and providing velocity, distance, and angle information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing archery projectile measurement systems are used, then basic measurement functionality is provided, but adaptability to various arrow shafts and broadheads is limited
Solution Approach 1:
The measurement system is designed with universal components that can accommodate multiple types of arrow shafts and broadheads. The elongated body fits within the hollow bore of various arrow shafts, and the sensor array can detect different projectile configurations, enabling one system to serve multiple measurement functions across different archery equipment types.
Solution Approach 2:
The measurement system employs a nested structure where the elongated body with embedded sensors is inserted into the hollow bore of the arrow shaft. This nesting approach allows the measurement device to be compact and adaptable to different arrow diameters while maintaining internal sensor functionality for detecting broadhead characteristics and flight dynamics.
2Loss of information
If existing measurement systems are employed, then some trajectory data is collected, but trajectory during flight is negatively impacted
Solution Approach 1:
The system replaces traditional mechanical measurement methods with electromagnetic sensors and wireless transmission. Accelerometers, gyroscopes, and magnetometers detect flight parameters without mechanical contact that could alter trajectory, while wireless communication transmits data without physical tethering that might affect flight dynamics.
Solution Approach 2:
The measurement system captures multiple physical parameters simultaneously (acceleration, rotation, magnetic field variations) at high sampling rates. By monitoring changes in these parameters throughout flight, the system reconstructs complete trajectory information without adding mechanical mass or structural elements that would alter the projectile's natural flight path.
3Measurement precision
If one-dimensional accelerometer data is used, then basic acceleration measurement is achieved, but high-resolution three-dimensional stabilization point determination is insufficient
Solution Approach 1:
The system transitions from one-dimensional accelerometer measurement to three-dimensional spatial measurement by incorporating sensors along the longitudinal axis and utilizing multiple sensor types (accelerometers, gyroscopes, magnetometers). This dimensional expansion enables precise determination of stabilization points by analyzing rotation and acceleration vectors in three-dimensional space rather than single-axis data.
Solution Approach 2:
The measurement system divides the sensing function into multiple segmented sensors distributed along the elongated body. Rather than relying on a single complex accelerometer, multiple simpler sensors (accelerometers at different positions, gyroscopes, magnetometers) work together to provide comprehensive three-dimensional measurement data for calculating stabilization points with high precision.
4Reliability
If accelerometers are used in existing systems, then acceleration data is collected, but saturation during launch and impact occurs
Solution Approach 1:
The system employs dynamic sensor selection and data processing that adapts to different flight phases. During high-acceleration events like launch and impact, the system switches between different sensor inputs and processing algorithms to prevent saturation, utilizing gyroscopic data and magnetometer readings when accelerometers exceed their measurement range, thereby maintaining continuous reliable data collection throughout the entire flight sequence.
5Measurement precision
If existing systems average accelerometer data, then simplified processing is achieved, but high-resolution stabilization point determination is compromised
Solution Approach 1:
Rather than averaging all accelerometer data points, the system applies partial processing by identifying and analyzing only the specific data segments relevant to stabilization events. The processor detects transient vibration patterns and focuses computational resources on these critical moments, providing high-resolution stabilization point determination without the need to process and average entire flight datasets, thus balancing precision with manageable complexity.
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
Enables accurate determination of stabilization points and flight dynamics, enhancing archery performance by offering detailed kinetic and momentum data, including a trauma score and flight score, through high-resolution three-dimensional acceleration data.
Implementation Method 1
The at least one accelerometer may be adapted to detect cyclical flexure of the elongated arrow shaft
Data Source
AI summary
An archery projectile facility includes an elongated body. The elongated body includes at least one accelerometer. The at least one accelerometer is operable to generate three-dimensional acceleration information. The archery projectile facility includes a body processor. The body processor is operably connected to the at least one accelerometer. The body processor is adapted to process the three-dimensional acceleration information to generate sampled information. The archery projectile facility includes a transmitter. The transmitter is operably connected to the body processor to broadcast the sampled information. The archery projectile facility includes a receiver. The receiver includes a receiver processor. The receiver processor is adapted to generate resulting information based on the sampled information. The resulting information is based on a determination of a stabilization point.