Target Box Sensor Grid for High-Resolution Hit Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional target boxes for practice shooting facilities have a low resolution in hit evaluation, limiting the accuracy of feedback to shooters, and are costly due to extensive use of light sensors.
Innovation Solution
The target box incorporates two pairs of light-sensitive elements arranged at right angles, creating a Cartesian coordinate system that allows precise assignment of the light beam's center point on the target, reducing the number of required sensors while enhancing resolution, with optional V or L-shaped arrangements and a binary indicator for shot validity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If extensive coverage of the entire target with light-sensitive elements is used, then hit evaluation resolution is improved, but manufacturing cost and device complexity increase significantly
Solution Approach 1:
The target area is divided into multiple discrete measurement zones using a grid of light-sensitive elements. Instead of continuous coverage, the target is segmented into rectangular zones that can be independently measured, reducing the total number of sensors while maintaining sufficient resolution for hit evaluation.
Solution Approach 2:
The patent transitions from a single-dimensional linear sensor array to a two-dimensional grid arrangement of light-sensitive elements. This dimensional change allows the system to cover the entire target area with fewer sensors by utilizing both x and y coordinates simultaneously, improving measurement precision without proportionally increasing device complexity.
2Ease of manufacture
If a discrete number of light-sensitive elements is used in a coordinate system, then manufacturing cost is reduced, but hit evaluation resolution becomes significantly lower than conventional systems
Solution Approach 1:
The patent creates a simplified digital model of the target using a grid of light-sensitive elements that copy the essential measurement function without requiring physical coverage of the entire target area. The discrete sensor array mathematically represents the continuous target surface, enabling cost-effective manufacturing while maintaining adequate resolution through computational processing.
Solution Approach 2:
The system changes the measurement parameters from continuous analog signals to discrete digital readings from the light-sensitive element grid. By processing the discrete sensor data through computational algorithms, the system achieves sufficient hit evaluation resolution without the need for extensive physical sensor coverage, thereby reducing manufacturing cost.
3Measurement precision
If two pairs of rows of light-sensitive elements shifted in parallel are arranged, then hit evaluation resolution is significantly improved, but the number of light-sensitive elements increases
Solution Approach 1:
The patent merges two pairs of parallel light-sensitive element rows into a unified measurement system. By combining the data from both pairs, the system achieves enhanced hit evaluation resolution through redundant measurements and cross-validation, while the total number of elements remains manageable compared to complete target coverage.
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
This configuration significantly improves hit evaluation resolution at lower costs, providing accurate and economical feedback to shooters without extensive sensor coverage, and allows for data analysis and display via a PC or PDA for statistical evaluation.
Implementation Method 1
a light transmitter that can be actuated by means of a trigger for emitting a light beam with a substantially square cross section in the firing direction
Implementation Method 2
a target with a light receiver, the light receivers being a pair substantially at right angles to one another arranged rows of photosensitive elements
Data Source
Figure 1~1a
Figure 2
Figure 3
AI summary
In order to improve a target box (11) for a practice firing installation with a rifle (1) which has an optical transmitter (6), which can be operated by means of a trigger (10), for emission in the firing direction of a light beam (9) with an essentially square cross section, comprising a target disc (12) with a light receiver (13), with the light receiver (13) having a pair (26) of rows (15, 16) of light-sensitive elements (17) which are arranged essentially at right angles to one another, in order to achieve higher resolution for the hit evaluation with as little increase in cost as possible, it is proposed that at least one further pair (27) of rows (28, 29) of light-sensitive elements (17) are arranged, shifted parallel with respect to the row pair (26) of light-sensitive elements (17).