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http://dx.doi.org/10.5369/JSST.2016.25.5.349

Bolometer-Type Uncooled Infrared Image Sensor Using Pixel Current Calibration Technique  

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)
Publication Information
Journal of Sensor Science and Technology / v.25, no.5, 2016 , pp. 349-353 More about this Journal
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.
Keywords
Average-current Calibration; Bolometer; Resistance offset;
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Times Cited By KSCI : 1  (Citation Analysis)
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