Millimeter Wave Scanning Imaging System for Security Inspection
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Solution Overview
Problem
Existing active millimeter wave security inspection systems have limitations in throughput due to the need for individuals to stand still for extended periods, requiring multiple devices for simultaneous inspections, which increases cost and space requirements.
Innovation Solution
A scene monitoring type millimeter wave scanning imaging system with a columnar arrangement of millimeter wave scanning devices oriented in different directions, each equipped with a millimeter wave transceiver antenna array and optical cameras, allowing for simultaneous scanning and imaging of multiple individuals from various angles without the need for them to stand still, using a switch matrix to control antenna states and a data processing device for image reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single millimeter wave scanning device is used for security inspection, then the device complexity is reduced, but the productivity decreases due to the need to inspect multiple targets sequentially
Solution Approach 1:
The system divides the inspection area into multiple inspection areas and assigns different millimeter wave scanning imaging devices to each area. Each device is oriented towards a specific orientation and scans objects within its designated inspection area simultaneously, enabling parallel processing of multiple targets without requiring sequential inspection
Solution Approach 2:
The system transitions from a single-point inspection approach to a multi-dimensional spatial distribution of scanning devices. By arranging devices at different orientations and positions around the inspection scene, the system enables simultaneous coverage of multiple targets in different spatial locations, effectively increasing throughput without linearly increasing device count
2Productivity
If multiple millimeter wave scanning devices are deployed to inspect multiple targets simultaneously, then the productivity increases, but the occupying space increases
Solution Approach 1:
Multiple millimeter wave scanning imaging devices are merged into a single integrated system with a shared control unit and data processing unit. This consolidation allows multiple devices to operate simultaneously from different orientations while sharing common control and processing resources, reducing the total space required compared to having separate standalone inspection systems
Solution Approach 2:
The control unit and data processing unit serve multiple inspection devices simultaneously, providing universal functionality. A single control unit manages the operation of all millimeter wave scanning imaging devices, and a single data processing unit processes scan data from all devices, eliminating the need for duplicate control and processing systems for each device
3Measurement precision
If individuals stand still for extended periods for inspection, then the measurement precision is improved, but the loss of time increases
Solution Approach 1:
The system enables continuous scanning and imaging of multiple targets simultaneously without requiring targets to remain stationary for extended periods. By distributing multiple scanning devices across different inspection areas and operating them in parallel, the system maintains continuous inspection coverage while reducing the time each individual needs to stand still, as inspection occurs rapidly and concurrently across multiple devices
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
Enhances the throughput rate of security inspections by enabling rapid scanning of multiple individuals from different orientations, reducing inspection time and allowing for improved security monitoring in densely populated areas without the need for extensive equipment or space.
Implementation Method 1
transmitting antenna array 111 and a receiving antenna array 112... the transmitting antenna array 111 includes a plurality of millimeter wave transmitting antennas arranged linearly, and the receiving antenna linear array includes a plurality of millimeter wave receiving antennas arranged linearly
Data Source
Figure 1
Figure 2~3A
Figure 3B~4A(d)
AI summary
The disclosure provides a scene monitoring type millimeter wave scanning imaging system, comprising a plurality of millimeter wave scanning imaging devices adapted to be positioned in a security inspection scene, such that the plurality of millimeter wave scanning imaging devices are arranged to be oriented towards different orientations respectively so as to scan and image objects (1) to be inspected located within different inspection areas of the security inspection scene with millimeter waves and to provide scan data for the objects. There is also provided a security inspection method by using the scene monitoring type millimeter wave scanning imaging system.