X-Ray Scanner Synchronization for Cross-Talk Signal Removal
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Solution Overview
Problem
Conventional X-ray scanning systems experience unwanted interference, or crosstalk, between high-energy and low-energy X-ray sources and radiation portal monitors due to asynchronous pulse repetition frequencies and varying X-ray dose outputs, leading to corrupted data and reduced detection efficiency.
Innovation Solution
Implement a common operational frequency generator to synchronize the pulse repetition frequencies of high-energy X-ray sources with low-energy X-ray scanning systems and radiation portal monitors, using processing modules to remove crosstalk data based on this frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-energy X-ray sources operate asynchronously with varying pulse repetition frequencies, then system flexibility and independent operation are improved, but crosstalk interference and data corruption increase
Solution Approach 1:
The patent implements periodic action by synchronizing all X-ray sources to operate at a common pulse repetition frequency. This regular periodic operation allows the system to maintain flexibility in source activation while ensuring that all sources pulse in a coordinated manner, enabling the low-energy system to predict and filter crosstalk from high-energy sources effectively
Solution Approach 2:
The patent employs feedback mechanisms where the low-energy X-ray system monitors and detects crosstalk signals from high-energy sources. By using the common operational frequency as a reference, the system can identify when high-energy sources are active and apply appropriate filtering algorithms to remove crosstalk interference from the detected signals, creating a closed-loop control system
2Area of stationary object
If multiple X-ray sources are co-located in close proximity, then space utilization and system integration are improved, but mutual interference and signal corruption worsen
Solution Approach 1:
The patent introduces a common operational frequency as an intermediary coordination mechanism between the high-energy and low-energy X-ray sources. This frequency reference acts as a mediator that enables the closely spaced sources to operate without direct interference, allowing the low-energy system to distinguish and filter out signals from the high-energy source based on their synchronized timing
Solution Approach 2:
The patent merges the operational parameters of multiple independent X-ray sources by establishing a common pulse repetition frequency. This combination approach allows the system to maintain close physical proximity for space efficiency while coordinating the temporal characteristics of all sources to prevent mutual interference and enable effective crosstalk removal
3Object-affected harmful factors
If conventional pulse removal techniques are used without frequency synchronization, then simple high-intensity crosstalk can be removed, but detection efficiency and image quality deteriorate due to loss of valid data
Solution Approach 1:
The patent changes the temporal parameter of X-ray source operation by implementing a common pulse repetition frequency. This parameter change transforms the crosstalk signal from a random, unpredictable interference into a periodic signal with known characteristics, enabling the low-energy system to use frequency-based filtering that preserves valid data while removing only the synchronized crosstalk components
4Productivity
If high-energy X-ray sources operate at high pulse repetition frequencies, then scanning speed and productivity are improved, but crosstalk signal intensity and interference level increase
Solution Approach 1:
The patent employs feedback control where the low-energy system continuously monitors for crosstalk signals at the common operational frequency. When high-energy sources operate at high pulse repetition frequencies, the feedback mechanism detects the increased crosstalk intensity and applies appropriate filtering algorithms that adapt to the signal characteristics, maintaining scanning speed while removing the enhanced interference through frequency-selective processing
Data Source
AI summary
The present specification describes a system for eliminating X-ray crosstalk between a plurality of X-ray scanning systems and passive radiation detectors. The system includes a frequency generator for generating a common operational frequency, a high-energy X-ray source or scanning system coupled with the frequency generator for receiving the common operational frequency and configured to modify the pulse repetition frequency of the high-energy X-ray source or scanning system in order to synchronize with the common operational frequency and a low-energy X-ray scanning system and/or passive radiation detection system coupled with the frequency generator for receiving the common operational frequency and having a processing module configured to remove data associated with the common operational frequency at an instance of time if the high-energy X-ray source or scanning system has emitted X-rays at the instance of time.