Dual-Mode THz and MMW Imaging for Closed-Container Inspection
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Solution Overview
Problem
There is a need for improving efficiencies in object detection, characterization, and identification within closed containers using enhanced object scanning apparatus supported by algorithmic methods, including signal processing or machine learning, to detect hidden items and determine modifications or tampering without opening the container.
Innovation Solution
A dual-mode object scanning apparatus utilizing terahertz (THz) and millimeter wave (MMW) imaging systems, combined with image processing and machine learning, to generate multi-dimensional images of container contents, enabling simultaneous detection and identification of objects using terahertz inspection zones and radiation sources, sensors, and image processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single-mode imaging (either THz or MMW) is used, then device complexity is reduced, but detection precision and object characterization capability are insufficient
Solution Approach 1:
The patent combines terahertz (THz) imaging system and millimeter wave (MMW) imaging system into a single dual-mode scanning apparatus. The THz source and MMW source operate simultaneously or sequentially, with their respective sensors detecting different aspects of the target object. This merging of two imaging modalities enhances detection precision by providing complementary information about the inspected objects, while the integrated design manages device complexity through coordinated control of multiple radiation sources.
Solution Approach 2:
The dual-mode scanning apparatus is designed to perform multiple functions: THz imaging for certain material characterization and MMW imaging for other complementary detection capabilities. The system can selectively activate either THz mode, MMW mode, or both modes depending on the inspection requirements, making the device universally applicable to various detection scenarios while maintaining operational simplicity through mode selection.
2Productivity
If manual inspection is used, then device complexity is low, but productivity and inspection efficiency are reduced
Solution Approach 1:
The patent replaces manual visual inspection with an automated dual-mode imaging system that uses THz and MMW radiation to detect and characterize objects. The imaging sensors capture radiation transmitted through or reflected from targets, and image processing algorithms automatically analyze the data to identify objects of interest. This substitution of mechanical/manual inspection with electromagnetic radiation-based detection dramatically increases inspection efficiency and productivity while providing objective, repeatable results.
Solution Approach 2:
The system incorporates automated image processing and analysis capabilities that enable the apparatus to perform inspection tasks without continuous human intervention. The processed images and detection results are generated automatically, allowing the system to serve itself in completing the inspection workflow, thereby enhancing productivity while reducing the need for manual labor in routine inspection tasks.
3Loss of information
If conventional imaging is used, then device complexity is reduced, but information completeness about hidden items is insufficient
Solution Approach 1:
The patent adds a new dimension to object inspection by incorporating both THz and MMW imaging modalities, each operating at different frequency ranges and providing complementary information about the inspected targets. This multi-dimensional approach to data collection captures different physical properties and characteristics of materials that single-mode imaging cannot detect, thereby reducing information loss about hidden items while the integrated design manages the complexity of handling multiple radiation sources and sensors.
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 enhances the detection and characterization of objects within containers by providing detailed, multi-dimensional images, improving identification accuracy and efficiency in detecting hidden items and tampering, while reducing the need for manual inspection.
Implementation Method 1
a terahertz source for generating a 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
Implementation Method 3
at least one imaging sensor configured to collect the propagated optical beam after the interacting
Implementation Method 4
the object is characterized by the reflection, transmission or absorption of the radiation by an object
Implementation Method 5
the object is characterized by the reflection, transmission or absorption of the radiation by an object
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.