Wire-Loop Proximity Detection for Flexible Hazard Field Coverage
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Solution Overview
Problem
Proximity detection systems using ferrite coils have limitations in shaping the magnetic field, which can be inadequate for detecting proximity to objects in varying environments, particularly in hazardous situations where a more flexible and expansive electromagnetic field is needed to alert individuals of potential dangers.
Innovation Solution
A system utilizing a wire loop that creates an electromagnetic field extending up to 500 meters with a geometry that can be linear or meandering, coupled with a personal alarm device worn by individuals to detect the magnetic field and produce signals when in proximity to the field, and a field extension module that includes a ferrite coil and spliced wire to adjust the field shape and reach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ferrite coils are used to produce an electromagnetic field for proximity detection, then the system can alert individuals when they are in proximity to hazardous objects, but the shape and coverage area of the magnetic field is limited and inflexible
Solution Approach 1:
The wire loop is divided into multiple segments that can be independently configured to create different field shapes. Each segment can be adjusted to extend the electromagnetic field coverage in specific directions, allowing the system to adapt to various hazard scenarios and expand the overall detection area beyond what a single ferrite coil can provide.
Solution Approach 2:
The wire loop configuration transitions from a two-dimensional planar structure to a three-dimensional spatial arrangement by extending loops in multiple directions and planes. This dimensional expansion allows the electromagnetic field to cover a larger volume of space and provides greater flexibility in shaping the field to match complex hazard geometries.
2Area of stationary object
If a wire loop is used to create an electromagnetic field with extended reach, then the field coverage area increases, but the device complexity increases due to additional components needed
Solution Approach 1:
The wire loop structure serves multiple functions simultaneously: it generates the electromagnetic field, defines the detection zone geometry, and provides structural support for the system. This multi-functionality reduces the need for separate components that would otherwise be required, thereby limiting the increase in device complexity despite the expanded field coverage.
Solution Approach 2:
The system achieves extended field reach by adjusting parameters such as wire loop dimensions, current frequency, and wire material properties rather than adding numerous additional components. By optimizing these parameters, the electromagnetic field coverage area is expanded while keeping the overall device structure relatively simple and manageable.
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 effectively alerts individuals to their proximity to hazardous objects by creating a flexible and expansive electromagnetic field, enhancing safety by providing a more reliable detection of potential dangers compared to traditional ferrite coil-based systems.
Implementation Method 1
a sensor portion having a wire loop through which electric current runs and creates an electromagnetic field that emanates about the wire loop
Implementation Method 2
a personal alarm device that is worn by the individual which detects the presence of the magnetic field emanating from the wire loop
Data Source
AI summary
An apparatus for identifying when an individual is in proximity to an object having a length has a sensor portion having a wire loop through which electric current runs and creates an electromagnetic field that emanates about the wire loop. The wire loop extending along at least a third of the length of the object. The apparatus has a personal alarm device that is worn by the individual which detects the presence of the magnetic field emanating from the wire loop when the personal alarm device is in the magnetic field and produces a signal indicating the personal alarm device is within the magnetic field. Alternatively, the sensor portion extends from a contiguous boundary up to 500 meters, where the boundary has a geometry that is linear or meandering. A head piece for an individual's head. A method for identifying when an individual is in proximity to an object. A field extension module. A proximity device.