3D Posture Recognition Using Polarized Light Modules
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Solution Overview
Problem
Current location-based services struggle to accurately determine the 3D posture and location of a movable body in indoor environments due to signal interference from indoor structures, limiting their ability to provide comprehensive location-based services.
Innovation Solution
A device utilizing polarization modules and illumination modules to generate and interpret illumination value information from polarized light, allowing for the determination of a movable body's posture and location in a 3D space by analyzing the interaction of polarized light with multiple surfaces, using equations to calculate rotational angles and positional coordinates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS and wireless LAN signal patterns are used for location estimation, then outdoor location services can be provided, but indoor location accuracy deteriorates due to signal interference from indoor structures
Solution Approach 1:
The patent replaces electromagnetic signal-based location estimation (GPS, wireless LAN) with a mechanical/optical measurement system using polarized light and polarization modules. This substitution eliminates the harmful effect of signal interference from indoor structures by using light polarization properties instead of radio wave signal patterns for location and posture determination
Solution Approach 2:
The patent changes the measurement parameter from signal strength patterns to polarized light intensity and orientation. By measuring the intensity of polarized light received by polarization modules at different orientations, the system determines both location and 3D posture parameters, overcoming the limitations of traditional signal-based methods in indoor environments
2Loss of information
If traditional location recognition technology is used, then location can be determined, but viewing direction and inclination angle information cannot be verified
Solution Approach 1:
The patent adds dimensional information by using polarization modules that can detect light intensity at multiple orientations (typically 0°, 45°, 90°, 135°). This multi-dimensional measurement capability enables the system to extract both location coordinates and 3D posture parameters (viewing direction, inclination angle) from the same light field, transforming a 2D location problem into a 5D problem (x, y, z position + viewing direction + inclination angle)
Solution Approach 2:
The patent introduces polarized light as an intermediary medium that carries information about both location and posture. The polarization modules act as sensors that measure the properties of this intermediary light field, which has been modulated by the geometric relationship between the light source, the modules themselves, and the target object, thereby encoding multiple parameters in a single measurement system
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 accurate recognition of a movable body's 3D posture and location, enhancing the capability of location-based services to provide more comprehensive information, including viewing direction and inclination angles, even in complex indoor environments.
Implementation Method 1
a device for recognizing a 3D posture and a location of a movable body which can accurately determine a posture (for example, an opposing direction and a viewing direction depending on an inclination angle) and a location of a movable body in a 3D space by using a polarized light characteristic
Data Source
AI summary
Accordingly the embodiment herein provides a device for recognizing a 3D posture and a location of a movable body. The device includes: a plurality of polarization modules individually attached to a plurality of surfaces of a 3D figure; a plurality of illumination modules individually corresponding to the polarization modules and generating and outputting illumination value information in which polarized light emitted from a polarization light source penetrates the corresponding polarization module to be received; and an interpretation unit generating posture information and location information of the movable body by using the illumination value information received from the illumination modules corresponding to the polarization modules attached to at least three considered target surfaces.