中国物理B ›› 2010, Vol. 19 ›› Issue (10): 108702-108702.doi: 10.1088/1674-1056/19/10/108702

• CROSS DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Research on the response model of microbolometer

隋修宝, 陈钱, 顾国华, 刘宁   

  1. School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2010-02-24 修回日期:2010-03-22 出版日期:2010-10-15 发布日期:2010-10-15
  • 基金资助:
    Project supported by the National Defense Pre-research Fund of China (Grant No. 50405050303), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK2009049).

Research on the response model of microbolometer

Sui Xiu-Bao(隋修宝)†, Chen Qian(陈钱), Gu Guo-Hua(顾国华) and Liu Ning(刘宁)   

  1. School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2010-02-24 Revised:2010-03-22 Online:2010-10-15 Published:2010-10-15
  • Supported by:
    Project supported by the National Defense Pre-research Fund of China (Grant No. 50405050303), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK2009049).

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摘要： There are certain limitations in the application of uncooled focal plane array (FPA) detector due to the lack of an effective response model which reliably transforms the target temperature to analog output voltage. This paper establishes the response model of microbolometer through researching the detection theory of microbolometer and the heat balance equation under the condition of the pulsed voltage bias. In the establishing process, we simplified the heat balance equation to acquire a simple answer. The experimental data show that, in the temperature dynamic range of 30 K, the biggest tolerance between the model data and the experiment data is 0.2 K; while in the temperature dynamic range of 100 K, it is 1 K. This model can reflect the real response of the microbolometer with only small differences which are acceptable in engineering applications.

Abstract: There are certain limitations in the application of uncooled focal plane array (FPA) detector due to the lack of an effective response model which reliably transforms the target temperature to analog output voltage. This paper establishes the response model of microbolometer through researching the detection theory of microbolometer and the heat balance equation under the condition of the pulsed voltage bias. In the establishing process, we simplified the heat balance equation to acquire a simple answer. The experimental data show that, in the temperature dynamic range of 30 K, the biggest tolerance between the model data and the experiment data is 0.2 K; while in the temperature dynamic range of 100 K, it is 1 K. This model can reflect the real response of the microbolometer with only small differences which are acceptable in engineering applications.

Key words: microbolometer, detection theory, response model, capacitive transimpedance amplifier

中图分类号:  (Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors)

  • 07.57.Kp
84.32.Ff (Conductors, resistors (including thermistors, varistors, and photoresistors)) 89.20.Kk (Engineering)