| Title |
A Design of High Resolution Temperature Measurement System Using Digital Signal Processor |
| Authors |
김태훈(Kim, Tae-Hoon) ; 임주현(Lim, Ju-Hyun) ; 김덕영(Kim, Duck-Young) ; 고한우(Ko, Han-Woo) ; 김성환(Kim, Sung-Hwan) |
| Keywords |
Steinhart ; linearity ; reliability |
| Abstract |
This paper presents a linear temperature/voltage relation over a temperature range(0~100°C) with high-resolution, reasonably god response linearity, reliability, and overall improved performance. A notable feature of the proposed method is that the whole temperature span is divided by 16 subbands thus the variation span of measured voltage is narrowed. Therefore noise characteristic has been improved. The output voltage is amplified after the uniformed DC voltage component is eliminated by offset. We proposed circuit using median value and mean value of digital signal in order to reduce the noise effect. The proposed circuit offers linear temperature/voltage conversion over a wide dynamic range using DSP(TMS320C31) and steinhart equation. |