Dual-Mode THz and MMW Scanning for Hidden Object Detection
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Solution Overview
Problem
Existing container screening technologies lack efficiency in object detection, characterization, and identification, particularly for hidden items within containers, and there is a need for improved scanning apparatus supported by advanced algorithmic methods.
Innovation Solution
A dual-mode object scanning apparatus utilizing terahertz (THz) and millimeter wave (MMW) imaging systems, combined with signal processing and machine learning, to enhance detection and identification capabilities by generating multi-dimensional images of container contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single-mode imaging (THz or MMW) is used for container screening, then the apparatus is simpler to operate, but the detection precision and object characterization capability are insufficient
Solution Approach 1:
The patent combines THz imaging and MMW imaging systems into a single multi-mode scanning apparatus. The THz source and MMW source operate simultaneously or sequentially, with their respective sensors detecting different aspects of the container contents. This merging of multiple imaging modes enables enhanced detection precision by capturing complementary information that neither mode could provide alone, while the integrated control system manages the complexity through coordinated operation of the multiple sources and sensors.
2Productivity
If advanced algorithmic methods are implemented, then object characterization and identification efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex manual analysis and interpretation of imaging data with automated algorithmic methods including signal processing and machine learning algorithms. These computational methods automatically characterize and identify objects within containers by analyzing the multi-mode imaging data, significantly improving processing efficiency and productivity while reducing the need for manual intervention and expert analysis.
3Measurement precision
If multi-dimensional imaging is generated, then hidden items and tampering are better identified, but the loss of time for data processing increases
Solution Approach 1:
The patent implements continuous signal processing and real-time analysis of the multi-mode imaging data as it is acquired. The machine learning algorithms process the THz and MMW data streams continuously rather than in batch mode, enabling real-time generation of multi-dimensional images and immediate identification of hidden items or tampering. This continuous processing minimizes delays and maintains high identification accuracy without significant time loss.
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 dual-mode system provides enhanced detection and characterization of objects within containers, improving accuracy and efficiency by combining THz and MMW imaging, enabling the identification of hidden items and tampering, and supporting real-time image processing and analysis.
Implementation Method 1
a terahertz source for generating a propagated optical beam; a THz inspection zone defined by an in focus region of the propagated optical beam
Implementation Method 2
an electromagnetic energy source for generating a radiation signal at a frequency other than that of the terahertz source, wherein the radiation signal passes through the THz inspection zone such that objects interact with the propagated optical beam and radiation signal
Implementation Method 3
at least one imaging sensor configured to collect the propagated optical beam after the interacting
Data Source
AI summary
There is provided object scanning apparatus and methods of scanning objects. The object scanning apparatus may include a THz source emitting an optical beam; an electromagnetic energy source for generating a radiation signal at a wavelength other than terahertz, such as RF or MMW radiation; an optical system for directing the optical beam; a zone for inspecting objects wherein the optical beam and radiation signal interact with the object; a motion device for changing the spatial or temporal interaction of the object and optical beam and the radiation signal; at least one transducer, the at least one transducer including an imaging transducer for converting the optical beam energy and radiation signal after interaction with the object to an electronic image; and a processor for performing processing of the image for use in characterization of the object or its interior contents or composition.