Flexible Sensor Plates for Surface-Conforming Feature Detection
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Solution Overview
Problem
Conventional obscured feature detectors struggle to accurately detect features behind opaque surfaces due to air gaps formed on curved surfaces, leading to inconsistent and unreliable readings, and are limited in size and accuracy when trying to distinguish between different features like beams, joists, and pipes.
Innovation Solution
A surface-conforming obscured feature detector with flexibly connected sensor plates that adapt to convex, concave, and flat surfaces, minimizing air gaps and using a sensing circuit and controller to analyze capacitance changes for precise feature location identification, capable of distinguishing between different features based on dielectric constants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flat detectors are used on curved surfaces, then the device structure is simple, but air gaps form between sensor plates and surface leading to inconsistent and unreliable readings
Solution Approach 1:
The sensor plates are made flexibly connected rather than rigidly fixed, allowing them to dynamically adapt to the curvature of the surface being detected. This flexibility enables the sensor array to conform to both flat and curved surfaces, eliminating air gaps and ensuring consistent capacitive coupling for reliable readings.
Solution Approach 2:
The patent employs flexible printed circuit boards to connect the sensor plates, creating a flexible sensing array that can bend and conform to curved surfaces. This flexible film structure allows the detector to maintain intimate contact with the surface, eliminating air gaps while keeping the overall device structure relatively simple.
2Measurement precision
If larger detector sizes are used to improve detection accuracy, then measurement precision improves, but air gap problems become more significant on curved surfaces
Solution Approach 1:
The flexible connection allows larger sensor arrays to adapt to curved surfaces without creating significant air gaps. The flexibility enables the extended detector to conform to surface curvature, maintaining reliable capacitive coupling across the entire sensing area and ensuring consistent readings throughout the larger detection zone.
3Adaptability or versatility
If rigid sensor plate connections are used, then manufacturing is easier, but the detector cannot accommodate surface curvature
Solution Approach 1:
The flexible printed circuit board serves as both the connection medium and the enabling element for surface adaptability. While flexible connections may be slightly more complex to manufacture than rigid ones, the technology is well-established and allows the detector to accommodate various surface types including curved walls and ceilings, significantly improving versatility.
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 solution provides consistent and accurate detection of obscured features on irregular surfaces, enabling deeper and more precise location determination, and allows for larger detector sizes with improved performance by minimizing air gaps and distinguishing between various architectural features.
Implementation Method 1
each having a capacitance that varies based on: (a) the proximity of the sensor plate to one or more surrounding objects, and (b) the dielectric constant(s) of the surrounding object(s)
Implementation Method 2
A surface-conforming obscured feature detector with flexibly connected sensor plates that adapt to convex, concave, and flat surfaces
Data Source
AI summary
A surface-conforming obscured feature detector includes a plurality of sensor plates flexibly connected together, each having a capacitance that varies based on the dielectric constant of the materials that compose the surrounding objects and the proximity of those objects. A sensing circuit is coupled to the sensor plates to measure the capacitances of the sensor plates. A controller is coupled to the sensing circuit to analyze the capacitances measured by the sensing circuit. One or a plurality of indicators are coupled to the controller, and are selectively activated to identify the location of a relative high capacitance, which can be indicative of an obscured feature behind a surface.