Compensation device and method for reducing influence of BJT series resistance on temperature measurement precision

• Main Authors: JIN RUIYING, TANG TAO, GUAN RUI
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2024
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention discloses a compensation device and method for reducing the influence of BJT series resistance on temperature measurement precision, and the device comprises a first current source, a second current source, a third current source, a fourth current source, a bipolar transistor, an arithmetic unit, and an analog-to-digital converter. The output ends of the first current source, the second current source, the third current source and the fourth current source are connected with the emitter of the bipolar transistor and the input end of the arithmetic unit, and the output end of the arithmetic unit is connected with the input end of the analog-to-digital converter. Finally, the temperature measuring device can obtain the VBE and the delta VBE which are unaffected and related to the temperature information, and the precision of temperature measurement is improved. 本发明公开了一种降低BJT串联电阻对温度测量精度影响的补偿装置及方法，包含第一电流源、第二电流源、第三电流源、第四电流源、双极型晶体管、运算器和模拟数字转换器，第一电流源、第二电流源、第三电流源、第四电流源的输出端与双极型晶体管的发射极和运算器的输入端连接，运算器的输出端与模