Arrow-Mounted Electronic Apparatus for Velocity Measurement
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Solution Overview
Problem
Conventional archery equipment chronographs provide limited information on arrow velocity, primarily offering average velocity measurements at fixed locations along the flight path and requiring precise alignment, which restricts their utility and can lead to inaccurate measurements or damage if misaligned.
Innovation Solution
An arrow-mounted electronic apparatus with a wireless transmitter and accelerometer, allowing for real-time data transmission of acceleration signals, enabling the determination of instantaneous velocity and flight characteristics at multiple locations along the arrow's flight path, and facilitating improved archery equipment tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a ballistic-type chronograph with fixed sensing elements is used to measure arrow velocity, then velocity measurement is provided, but the measurement is limited to average velocity at fixed locations and requires precise alignment
Solution Approach 1:
The patent replaces the mechanical chronograph system with fixed sensing elements with an electronic measurement system using accelerometers and wireless transmitters mounted on the arrow itself. This substitution allows continuous measurement throughout the flight path rather than at fixed locations, resolving the contradiction between measurement capability and adaptability to different measurement points.
Solution Approach 2:
The arrow-mounted electronic apparatus measures its own flight characteristics autonomously without requiring external chronograph equipment. The accelerometer continuously records acceleration data throughout the flight, and the wireless transmitter automatically sends this data to external devices, enabling the system to serve itself and providing comprehensive velocity information at all locations along the flight path.
2Measurement precision
If sensing elements are located within 10 feet of the archer, then chronograph measurement is possible, but no measurements are provided concerning the arrow flight prior to or after this limited range
Solution Approach 1:
The patent extends the measurement capability from a limited spatial dimension (within 10 feet of the archer) to the entire flight path dimension. By mounting the accelerometer on the arrow itself, the system captures data across the full temporal and spatial extent of the arrow's flight, from launch to impact, eliminating information loss at the beginning and end of the flight path.
3Measurement precision
If shooting windows are properly aligned with the flight path, then velocity measurement is achieved, but misalignment results in failed measurement and possible destruction of the chronograph
Solution Approach 1:
Instead of aligning external sensing elements with the arrow's flight path (which risks misalignment and damage), the patent inverts the approach by mounting the sensing elements directly on the arrow. This eliminates the alignment problem entirely, as the sensor moves with the arrow and continuously measures its own motion without requiring precise positioning relative to the flight path.
4Ease of operation
If paper tuning is used to evaluate arrow flight, then tuning information is provided, but only at a single point along the flight path
Solution Approach 1:
The patent transforms the discrete, single-point measurement of paper tuning into continuous measurement throughout the entire flight path. The accelerometer continuously records acceleration data from launch to impact, providing comprehensive information about arrow flight characteristics at all locations, enabling more informed tuning decisions based on complete flight data rather than a single snapshot.
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
Provides comprehensive data on arrow flight characteristics, enabling precise tuning of archery equipment and improving shot accuracy by offering detailed velocity and performance insights throughout the entire flight path.
Implementation Method 1
an accelerometer configured to supply an acceleration signal
Implementation Method 2
a wireless transmitter configured to transmit data corresponding to the acceleration signal
Data Source
AI summary
A method provides a visual reference for establishing an archery sight setting for an archery sight employed when aiming a bow. The method includes receiving, with the touch screen display, a user-input identifying at least one feature of selected archery equipment, the selected archery equipment including the archery sight and the bow and establishing, by the processing device, the archery sight setting based at least in part on at least one feature identified by the user-input, the archery sight setting established to provide a desired level of accuracy for the selected archery equipment. The method also includes outputting, by the processing device, the archery sight setting for display in the touch screen display and employing the archery sight setting as a visual reference for adjusting the archery sight to locate at least one sight pin at a height to provide the desired level of accuracy for the selected archery equipment.