Handheld Metal Detector with Integrated Excavation Tool
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Metal detectors face a trade-off between deep penetration and accurate location of metallic objects, and existing solutions for retrieving buried objects are inefficient, requiring multiple scans and tools, making treasure hunting a repetitive and cumbersome process.
Innovation Solution
A hand-held metal detector with a built-in excavation tool, such as a blade, trowel, or rake, that allows for simultaneous detection and retrieval of metallic objects, featuring a search coil for side-scan detection and alert signals through audio, tactile, or visual cues to guide the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a larger search coil is used to achieve deep penetration, then field penetration depth is improved, but location accuracy of metallic objects deteriorates
Solution Approach 1:
The patent divides the detection process into two stages using two different coil sizes. A large search coil (6-12 inches in diameter) is used for initial sweeping to detect objects at depth, then a smaller pinpoint coil (1-3 inches in diameter) is used for precise location determination. This segmentation allows each coil to optimize its function without compromise.
Solution Approach 2:
The system dynamically switches between two detection modes: a sweeping mode using the large coil for broad area coverage and deep penetration, and a pinpoint mode using the smaller coil for accurate location. The user transitions between these modes based on detection needs, optimizing both penetration depth and location accuracy at different stages.
2Length of stationary object
If a ground search metal detector with a large search coil is used for sweeping, then field search penetration depth is improved, but the complexity of retrieving buried objects increases
Solution Approach 1:
The patent combines two previously separate devices (a ground search metal detector with large coil and a pinpoint detector with small coil) into a single integrated unit. The housing contains both search coils, and the system includes an excavation tool attachment, merging detection and retrieval functions into one device.
Solution Approach 2:
The integrated device performs multiple functions: deep sweeping detection with the large coil, precise pinpoint detection with the small coil, and excavation with the attached tool. This multi-functionality eliminates the need for users to manage multiple separate devices and tools.
3Measurement precision
If multiple separate devices and tools are used for detection and retrieval, then detection capability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent merges multiple separate devices (ground search detector, pinpoint detector) and tools (excavation tools) into a single integrated handheld device. The housing contains both search coils, and the excavation tool attaches directly to the probe, creating one unified operational unit.
Solution Approach 2:
The single device provides universal functionality for both detection phases (sweeping and pinpointing) and retrieval (excavation). Users operate one device throughout the entire treasure hunting process rather than switching between multiple tools, significantly improving ease of operation.
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
Enables precise pinpointing and retrieval of metallic objects with increased efficiency by integrating detection and excavation functions, reducing the need for multiple scans and tools, and improving user experience in treasure hunting and similar applications.
Implementation Method 1
The search coil(s) establishes an electromagnetic field, called a search field, which can effectively penetrate non-metallic materials, such as soil, water and other materials.
Implementation Method 2
When the search field is moved into proximity of a metallic object, the field is disturbed and the detector circuit senses this disturbance.
Data Source
AI summary
A hand-held metal detector and soil excavation device useful for locating and retrieving metallic objects concealed in soil or other materials. The device includes a housing with a hand-grip portion and an elongated probe portion. There is an excavation tool connected to the housing that is useful for moving soil to locate metallic objects that are sought. The device also includes a metal detector circuit located within the housing, that operates to generate an alert signal when the probe portion is moved into proximity of metallic objects.