Design of an automated feedback control cooling system for swir linear image sensor application

Chien Hung Chen*, Chih Wen Chen, Chun Fu Lin, Tai Shan Liao, Chi Hung Hwang, Shir-Kuan Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Our novel automated feedback temperature controlled cooling system consists of a temperature measurement circuit, a TE cooler, a thermistor, a microcontroller, and a digital-to-analog converter and PWM algorithms. The measurement accuracy of this temperature controlled TE system was better than 0.1° C and can be used for maintaining an instrument's isothermal applications. The experimental results of SWIR linear image shows that the temperature can be stably maintained at -20° C, the dark output current can be reduced almost 80mV (Integration time: 100 ms) and the SNR of pixel can be improved from 48 dB to 83 dB as well.

Original languageEnglish
Pages (from-to)234-246
Number of pages13
JournalInstrumentation Science and Technology
Volume38
Issue number3
DOIs
StatePublished - 1 May 2010

Keywords

  • Automated feedback
  • PWM
  • SNR
  • SWIR linear image
  • TE cooler
  • Temperature control

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