Inertial Motion Analysis for Shooter–Weapon Correlation
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Solution Overview
Problem
Existing shooting analysis methods, such as video recording and laser pointers, fail to provide precise correlation between shooter movements and weapon movements, are cumbersome, and disrupt the balance of the weapon, making them unsuitable for high-level shooters.
Innovation Solution
A system using miniature inertial measurement units (IMUs) attached to the shooter and weapon, with preprocessing in interface boxes and central processing for real-time data analysis, enabling precise correlation between shooter and weapon movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If video recording is used to analyze shooting movements, then a preliminary qualitative analysis can be performed, but the analysis precision is insufficient and cannot detect subtle irregularities
Solution Approach 1:
The patent replaces the mechanical/optical video recording system with an electronic inertial measurement system. IMUs (inertial measurement units) are attached to the weapon and shooter, using accelerometers and gyroscopes to digitally capture and analyze movements with high precision, eliminating the limitations of video-based qualitative analysis.
Solution Approach 2:
The patent transforms the analysis from qualitative visual assessment to quantitative measurement by changing the measurement parameters. Instead of observing video footage, the system measures acceleration, velocity, and position parameters directly through IMU sensors, enabling precise detection of subtle movements that were previously undetectable.
2Measurement precision
If a laser pointer is added to the weapon to project a luminous point on the target, then stability problems can be revealed, but the weapon balance is disturbed and the analysis is incomplete
Solution Approach 1:
The patent replaces the laser pointer optical system with electronic IMU sensors that measure weapon movements directly without projecting light. This substitution eliminates the need for external optical components that would affect weapon balance, while still providing stability analysis through digital acceleration and orientation measurements.
Solution Approach 2:
The IMU system serves multiple functions simultaneously: it measures weapon stability, tracks shooter movements, and provides correlation analysis between the two. This multi-functionality replaces the single-purpose laser pointer while adding comprehensive analysis capabilities without affecting weapon balance.
3Measurement precision
If motion analysis devices are attached to the weapon to analyze weapon movements, then detailed weapon movement data can be obtained, but the device weight and complexity increase and correlation with shooter movements cannot be established
Solution Approach 1:
The patent merges the weapon-mounted IMU with the shooter-worn IMU into a single integrated analysis system. Both sensors measure movements using the same technology platform, and the system correlates their data to establish the relationship between shooter actions and weapon responses. This unified approach reduces overall system complexity compared to separate analysis systems.
Solution Approach 2:
The patent introduces a correlation algorithm as an intermediary that processes data from both IMUs. This intermediary component analyzes the temporal and spatial relationship between shooter movements and weapon movements, establishing causality without requiring direct physical connection between the sensors.
4Loss of information
If multiple instruments are added to the weapon for comprehensive analysis, then more data can be collected, but the weapon configuration is distorted and the shooting performance may be affected
Solution Approach 1:
The patent changes from adding multiple physical instruments to using a single multi-functional IMU platform. The IMU captures multiple movement parameters (acceleration, velocity, orientation) simultaneously through electronic sensing, eliminating the need for multiple physical attachments that would alter weapon configuration and balance.
Solution Approach 2:
The IMU system is designed to perform multiple measurement functions within a single compact unit. It simultaneously tracks weapon position, orientation, acceleration, and vibration, providing comprehensive analysis data without requiring multiple separate instruments that would compromise weapon configuration stability.
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 accurate, non-disruptive analysis of shooter and weapon movements, allowing for improved shooting accuracy by identifying and correcting subtle movement discrepancies.
Implementation Method 1
measuring instantaneous kinematic variables by the motion sensors
Data Source
Figure 1
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Figure 4a~4b
AI summary
The invention relates to a method for analyzing the movement of a person (100) and a device (200, 201) held by said person by means of a plurality of motion sensors (10, 11, 12, 13, 14, 15, 16, 17) attached to the person and/or the device, comprising the steps of: measuring instantaneous kinematic variables by the motion sensors, transmitting measurement data to at least one electronic interface unit (20, 21, 22) connected to one or more motion sensors, preprocessing the transmitted data in said unit, transmitting the preprocessed data to a central computer (30), processing the received data by the central computer with at least one correlation calculation, and displaying the results of said processing. The invention also relates to a motion analysis system for implementing such a method, for example, in the context of sport shooting.