Wideband Pulse Detector Using Parallel Frequency Channels
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Solution Overview
Problem
Conventional wideband pulse detectors are inadequate in detecting and identifying fast transient electromagnetic signals, particularly those with pulse widths below several nanoseconds, and cannot distinguish between various types of electromagnetic interference sources, leading to potential damage to electronic devices.
Innovation Solution
A low-cost wideband pulse detector system comprising a signal collection unit, classification unit, detection unit, and processing unit, which includes an antenna, equalizer, multiple signal detectors, and a classification algorithm to classify and identify electromagnetic pulses by frequency components, and a dynamic range compensation circuit to protect equipment, along with a self-diagnosis circuit for operational monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional wideband pulse detectors are used, then general electromagnetic signals can be detected, but fast transient electromagnetic signals with pulse widths below several nanoseconds cannot be detected and identified
Solution Approach 1:
The detector is divided into multiple parallel detection channels, each configured with different bandwidth characteristics. This segmentation allows simultaneous detection of electromagnetic signals across different frequency ranges, enabling accurate detection of fast transient signals with pulse widths below several nanoseconds while maintaining overall system reliability.
2Adaptability or versatility
If multiple signal detectors are added to detect various types of electromagnetic pulses, then detection coverage is improved, but device complexity increases
Solution Approach 1:
Multiple signal detectors are configured in parallel, each capable of detecting different types of electromagnetic pulses. This universal approach allows a single detector system to handle various pulse types (impulsive, oscillating, damped sinusoidal) simultaneously, improving detection coverage without requiring separate specialized detectors for each pulse type.
Solution Approach 2:
The system extends detection capability into the frequency domain by configuring detectors with different bandwidth characteristics. This dimensional approach allows the system to capture electromagnetic signals across a wide frequency spectrum, enabling identification of various pulse types through their frequency signatures rather than requiring time-domain analysis alone.
3Measurement precision
If signal classification by frequency components is implemented, then electromagnetic pulse identification is improved, but processing time increases
Solution Approach 1:
Signal classification by frequency components is performed concurrently with signal detection through parallel processing channels. By preparing frequency-based classification criteria in advance and executing them simultaneously with detection operations, the system achieves accurate electromagnetic pulse identification without adding sequential processing delays.
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 system effectively detects and identifies various types of wideband electromagnetic pulses, including those with short pulse widths, and provides real-time monitoring and warning, enhancing the protection of electronic devices from electromagnetic interference.
Implementation Method 1
a signal collection unit for receiving electromagnetic pulses
Implementation Method 2
an equalizer for compensating for a frequency response of the antenna
Implementation Method 3
filters for receiving respective outputs of the couplers while having different frequency bands
Implementation Method 4
an envelope detector for detecting a corresponding electromagnetic pulse
Data Source
AI summary
A wideband pulse detector and a method for operating the wideband pulse detector. The wideband pulse detector includes a signal collection unit for receiving electromagnetic pulses, a signal classification unit for classifying the electromagnetic pulses into N channels (where N is an integer of 2 or more) depending on frequency components corresponding to the electromagnetic pulses, a signal detection unit for detecting and holding the classified pulses, and a signal processing unit for converting the held pulses into digital signals, identifying types of the electromagnetic pulses corresponding to the converted digital signals using a classification algorithm, determining signal strengths of the electromagnetic pulses, and then controlling a reset circuit for successive signal detection.