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An equivalent time temperature mapping system with a 320 x 256 pixels full-frame 100 kHz sampling rate
1Dipartimento di Ingegneria Elettronica e delle Telecomunicazioni, Università degli Studi di Napoli Federico II, Via Claudio 21, 80125 Napoli, Italia.
The Review of Scientific Instruments
|November 6, 2007
Summary
This study presents a novel infrared temperature mapping system using equivalent time sampling. The system achieves 100 kHz bandwidth for ultrafast temperature transient measurements, surpassing standard IR camera limitations.
Area of Science:
- Physics
- Engineering
- Materials Science
Background:
- Ultrafast temperature transients require high acquisition rates exceeding standard infrared camera capabilities.
- Measuring rapid temperature changes is crucial in various scientific and industrial applications.
Purpose of the Study:
- To develop a novel temperature mapping system for measuring ultrafast temperature transients.
- To adapt the equivalent time sampling concept for enhanced temperature acquisition.
Main Methods:
- Utilized a standard infrared camera with a 50 Hz frame rate.
- Implemented an indium antimonide (InSb) sensor with a 10-microsecond integration time.
- Developed a custom digital synchronization circuit for precise timing control.
Main Results:
- Achieved an equivalent bandwidth of 100 kHz for full-frame temperature transient detection.
- Demonstrated the system's capability to measure temperature changes far faster than conventional IR cameras.
- Successfully synchronized the IR camera, experiment, and data acquisition system.
Conclusions:
- The developed system effectively measures ultrafast temperature transients.
- Equivalent time sampling combined with a fast InSb sensor and custom synchronization overcomes standard IR camera limitations.
- This novel approach significantly advances the field of high-speed thermal analysis.
