Terahertz Detection System Using Periodic On-Off Patterns
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Solution Overview
Problem
Existing terahertz-wave detection systems face interference issues due to unnecessary waves emitted from one light source being detected by another, leading to inhibited detection accuracy.
Innovation Solution
A terahertz-wave detection system with multiple light sources and detecting devices, where each light source emits terahertz waves in a unique on/off pattern, and the corresponding devices detect in synchronization with these patterns, preventing interference by ensuring that waves from one set are not detected by another.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple terahertz light sources are used to inspect targets from multiple directions, then detection coverage and inspection capability are improved, but unnecessary terahertz waves from one light source interfere with detection by other detecting devices
Solution Approach 1:
The patent applies periodic action by making each terahertz light source emit waves in a specific on/off pattern with a unique cycle. The first light source operates with a first cycle while the second light source operates with a second cycle. This periodic modulation allows detecting devices to distinguish between waves from different sources through frequency discrimination, thereby enabling multi-directional inspection while eliminating interference between light sources.
2Speed
If all light sources emit continuously, then detection speed is improved, but interference between light sources inhibits precise detection
Solution Approach 1:
The patent uses periodic action by implementing specific on/off patterns for each light source with different cycles. This allows the system to maintain high detection speed through continuous operation of multiple sources while eliminating interference through frequency-based signal separation. The periodic modulation enables detecting devices to identify and process signals from their corresponding light sources without being affected by other sources.
3Productivity
If multiple detecting devices operate simultaneously, then inspection efficiency is improved, but unnecessary waves from other light sources are detected causing inhibition
Solution Approach 1:
The patent applies periodic action by assigning different emission cycles to each light source pair. The first detecting device detects waves in synchronization with the first on/off pattern, while the second detecting device detects waves in synchronization with the second on/off pattern. This temporal and frequency-based separation allows simultaneous operation of multiple detecting devices without cross-interference, thereby maintaining high inspection efficiency while ensuring accurate signal detection.
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
This configuration enhances detection accuracy by eliminating unwanted wave interference, allowing all sets to perform emission and detection simultaneously without downtime, thereby improving signal-to-noise ratio and overall detection precision.
Implementation Method 1
a first terahertz light source and a first terahertz-wave detecting device... a second terahertz light source and a second terahertz-wave detecting device
Implementation Method 2
a detecting device which detects the terahertz waves (hereinafter, a terahertz-wave detecting device)... detects terahertz waves in synchronization with the first on/off pattern
Data Source
AI summary
A detection system including a plurality of terahertz light sources; and a plurality of terahertz-wave detecting devices which detect terahertz waves, wherein the plurality of terahertz light source includes a first terahertz light source which outputs the terahertz waves in a first on/off pattern with a first cycle, and a second terahertz light source which outputs the terahertz waves in a second on/off pattern with a second cycle which is different from the first cycle.