THz Detection Time-of-Flight Correction for Industrial Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing THz radiation measurement techniques face limitations in accuracy and reproducibility due to disturbances such as vibrations and humidity changes in industrial environments, which affect the time of flight of THz radiation, making it challenging to achieve precise characterization of target bodies.
Innovation Solution
A method and apparatus that measure the time-of-flight quantity of THz radiation along the measurement paths and adjust the operation of the THz emitter, detector, and pulse shape reconstruction module to correct for variations in time of flight, ensuring accurate and reliable THz radiation detection even in disturbed environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If THz radiation is used for material inspection in industrial environments, then non-contact characterization capability is improved, but measurement precision deteriorates due to vibrations and humidity changes affecting time of flight
Solution Approach 1:
The system continuously monitors the time of flight of THz radiation and uses this feedback to dynamically adjust the detection timing. The detected time of flight information is fed back to the evaluation unit, which then corrects the waveform measurement by adjusting for the actual time delay, compensating for vibrations and environmental changes in real-time
Solution Approach 2:
The system changes the detection parameter from fixed timing to variable timing based on actual time of flight measurements. Instead of using a predetermined fixed detection time, the system adapts the detection timing parameter according to the measured time of flight, allowing accurate measurements despite environmental disturbances
2Device complexity
If fixed detection timing is used for THz pulse measurement, then device complexity is reduced, but measurement precision deteriorates due to inability to compensate for time of flight variations
Solution Approach 1:
The system introduces a feedback mechanism where the time of flight is measured and used to adjust the detection timing. This feedback loop enables the system to maintain high measurement precision without requiring complex hardware modifications, as the correction is performed through software-based timing adjustment
Solution Approach 2:
The detection system transitions from a static fixed-timing approach to a dynamic adaptive-timing approach. The detection timing is made variable and adjusts automatically based on the measured time of flight, allowing the system to compensate for vibrations and environmental changes while maintaining relatively simple device architecture
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 approach enhances the accuracy and reliability of THz radiation measurements, enabling more precise characterization of target bodies and improving quality control processes by compensating for environmental disturbances.
Implementation Method 1
emitting, by a THz emitter, THz radiation comprising a time series of THz pulses
Implementation Method 2
detecting, by the THz detector, the incoming THz radiation being a time series of incoming THz pulses
Implementation Method 3
measuring, by a sensor, a time-of-flight quantity affecting the time of flight of the THz radiation
Data Source
Figure 1~2
Figure 3~8c
Figure 4a~6b
AI summary
A method and apparatus for detecting a pulsed THz beam, comprising: Emitting, by THz emitter (10), pulsed THz radiation (60) of outgoing pulse shape for interacting with target body; Detecting, by THz detector (20), incoming THz radiation comprising THz pulses, and outputting, by THz detector (20), a raw detector data of pulse shapes of incoming THz pulses; and Determining, by pulse shape reconstruction module (36), a reconstructed incoming pulse shape based on the raw detector data, Measuring, by sensor (80), a time-of-flight quantity (d) affecting the time of flight of the THz radiation (60); and Adjusting operation of at least one of THz emitter (10), THz detector (20) and pulse shape reconstruction module (36) using the time-of-flight quantity (d), for correcting for variations in time of flight of the THz radiation (60).