Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Bolometer-Type Uncooled Infrared Image Sensor Using Pixel Current Calibration Technique

화소 전류 보상 기법을 이용한 볼로미터 형의 비냉각형 적외선 이미지 센서

  • Kim, Sang-Hwan (School of Electronics Engineering, Kyoungpook National Unversity) ;
  • Choi, Byoung-Soo (School of Electronics Engineering, Kyoungpook National Unversity) ;
  • Lee, Jimin (School of Electronics Engineering, Kyoungpook National Unversity) ;
  • Oh, Chang-woo (Department of Sensor and Display Engineering, Kyoungpook National Unversity) ;
  • Shin, Jang-Kyoo (School of Electronics Engineering, Kyoungpook National Unversity) ;
  • Park, Jae-Hyoun (Korea Electronics Technology Institute) ;
  • Lee, Kyoung-Il (Korea Electronics Technology Institute)
  • Received : 2016.09.19
  • Accepted : 2016.09.30
  • Published : 2016.09.30
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Abstract

Recently, research on bolometer-type uncooled infrared image sensor which is made for industrial applications has been increasing. In general, it is difficult to calibrate fixed pattern noise (FPN) of bolometer array. In this paper, average-current calibration algorithm is presented for reducing bolometer resistance offset. A resistor which is produced by standard CMOS process, on the average, has a deviation. We compensate for deviation of each resistor using average-current calibration algorithm. The proposed algorithm has been implemented by a chip which is consisted of a bolometer pixel array, average current generators, current-to-voltage converters (IVCs), a digital-to-analog converter (DAC), and analog-to-digital converters (ADCs). These bolometer-resistor array and readout circuit were designed and manufactured by $0.35{\mu}m$ standard CMOS process.

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References

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