Single Camera EM Field Visualization with Spherical Sensor
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Solution Overview
Problem
Existing electromagnetic field visualization devices require large measuring devices and at least two cameras for accurate space scanning, making them cumbersome and impractical for certain environments.
Innovation Solution
A compact electromagnetic field space distribution visualizing device using a single video camera to capture and analyze the location and orientation of an electromagnetic field sensor, allowing for real-time visualization of electromagnetic field distributions without the need for multiple cameras or large scanning devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single video camera is used to capture and analyze sensor location, then device complexity is reduced, but measurement precision may be compromised
Solution Approach 1:
The patent introduces a spherical electromagnetic field sensor as an intermediary object that carries visual markers. This sphere serves as a mediator between the single camera and the three-dimensional space, enabling the camera to capture spatial information through the moving sphere's position and orientation in video frames, thus achieving 3D localization with reduced device complexity
Solution Approach 2:
The patent replaces complex mechanical scanning systems with a visual-based approach. Instead of using large mechanical devices to scan electromagnetic fields, the system uses video capture and image processing to track the sensor's position and reconstruct 3D space, substituting mechanical complexity with optical and computational methods
2Area of stationary object
If large measuring devices are used for space scanning, then measurement coverage is improved, but ease of operation deteriorates
Solution Approach 1:
The patent transforms the static, large-scale measurement system into a dynamic, portable one. By using a movable spherical sensor that can be carried through the measurement space and tracked by a video camera, the system achieves flexible operation and full spatial coverage without requiring large fixed infrastructure
Solution Approach 2:
The spherical electromagnetic field sensor serves multiple functions simultaneously: it detects electromagnetic field intensity, provides visual markers for location tracking, and indicates orientation through its spherical geometry with markers. This multi-functionality eliminates the need for separate positioning and measurement devices, improving ease of operation while maintaining comprehensive measurement capability
Data Source
AI summary
A device includes an electromagnetic field sensor which detects an intensity of an electromagnetic field; and a single video camera which captures video of space in which the electromagnetic field sensor is included. A determining unit is configured to determine at least a two-dimensional location of the electromagnetic field sensor by analyzing the video captured by the video camera; and a visualizing unit is configured to visualize the space distribution of the electromagnetic field, based on the intensity of the electromagnetic field detected by the electromagnetic field sensor and the two-dimensional location determined by the determining unit.