Variable Output Display for Obscured Feature Detection
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Solution Overview
Problem
Existing obscured feature detectors provide unreliable binary indications, leading to false positives and negatives when detecting support features behind or within walls, ceilings, or floors, due to variations in material and thickness of wallboards and coverings, limiting their accuracy and detail in locating obscured features.
Innovation Solution
A system with a variable output display and sensor array that provides non-binary indications by varying the luminance of LEDs or LCDs based on capacitance signal strength, allowing for a more nuanced representation of feature detection, including the ability to discern different types of obscured features and their locations with adjustable sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If binary indication display is used in obscured feature detectors, then device complexity is reduced, but measurement precision and reliability deteriorate due to false positives and negatives
Solution Approach 1:
The patent applies dynamics by transitioning from a static binary display (on/off) to a dynamic variable output display that can show multiple states (e.g., different brightness levels, colors, or patterns). This allows the display to represent varying signal strengths and feature types, improving measurement precision while maintaining relatively simple device architecture.
Solution Approach 2:
The patent utilizes parameter changes by varying display parameters (such as luminance intensity, color, or display pattern) based on the detected signal characteristics. This enables the system to convey more information about obscured features without requiring complex additional sensing elements, thus resolving the contradiction between display simplicity and detection accuracy.
2Measurement precision
If variable output display is implemented to provide detailed detection, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the display into multiple independent elements (such as an array of LEDs or LCD segments) that can be individually controlled. Each segment can represent different aspects of the detection (signal strength, feature type, confidence level), allowing detailed information presentation while using simple, standardized display components that minimize overall system complexity.
3Reliability
If compensation for wallboard variations is added to improve reliability, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the detector to automatically adapt to different wallboard conditions without requiring manual calibration or complex external adjustment mechanisms. The system performs self-calibration by analyzing the capacitance baseline and automatically compensating for variations in wallboard material, thickness, and composition, thereby improving reliability while keeping the device simple to operate.
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
The system offers a more accurate and detailed detection of obscured features, reducing false positives and negatives, and enabling the identification of feature types, such as studs, ducts, and wiring, by providing a variable output that corresponds to the strength and nature of the detected signals.
Implementation Method 1
Each of the one or more sensing elements provides a sensor reading having a signal strength based on a capacitance of the wallboard and any obscured features behind the wallboard
Data Source
AI summary
Systems are described for variably displaying at a display of an obscured feature detector a variable output responsive to signal strength at one or more sensor elements of the obscured feature detector. The variable output may vary by one or more of luminance, color, size, shape, etc.