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    • 10. 发明授权
    • Compensation circuit for compensating non-uniformity according to change of operating temperature of bolometer
    • 补偿电路根据测辐射热量计的工作温度变化补偿不均匀性
    • US07335884B2
    • 2008-02-26
    • US11327461
    • 2006-01-09
    • Hee Chul LeeChi Ho HwangYong Soo LeeSang Gu Kang
    • Hee Chul LeeChi Ho HwangYong Soo LeeSang Gu Kang
    • G01J5/02
    • G01J5/24H04N5/33H04N5/3651H04N5/3655
    • The present invention relates to a bolometer, and more specifically to a compensation circuit for compensating non-uniformity due to the difference of operating temperature between bolometers which exist in bolometer array using semiconductor material. A compensation circuit according to the present invention comprises a biasing part including a first transistor generating bias current according to the change of operating temperature to have a dependency of exponential function for the operating temperature of circuit, and a second transistor turned on/off according to the column signal of a bolometer array; a bolometer part including a variable resistor for detecting IR in a pixel base, a third transistor turned on/off according to the column signal of a bolometer array coupled to one end of the variable resistor, and a fourth transistor turned on/off according to the row signal of a bolometer array coupled to the other end of the variable resistor; and an off-set compensation part for compensating the non-uniformity of the bolometer unit.
    • 本发明涉及测辐射热计,更具体地说,涉及一种用于补偿不均匀性的补偿电路,这是由于存在于使用半导体材料的测辐射热计阵列中的测辐射热量计之间的工作温度差异。 根据本发明的补偿电路包括偏置部分,其包括第一晶体管,根据工作温度的变化产生偏置电流,以使电路的工作温度具有指数函数的依赖性,并且根据第 测辐射热计阵列的列信号; 一个测辐射热计部分,包括用于检测像素基础中的IR的可变电阻器,根据耦合到可变电阻器的一端的测辐射热计阵列的列信号导通/关断第三晶体管,以及第四晶体管根据 耦合到可变电阻器的另一端的测辐射热计阵列的行信号; 以及用于补偿测辐射热计单元的不均匀性的偏移补偿部分。