Shijie Xin, Lei Ding. Uncertainty Evaluation of Digital Mean Filter in Temperature Measurement System[J]. Acta Optica Sinica, 2020, 40(17): 1712001
- Acta Optica Sinica
- Vol. 40, Issue 17, 1712001 (2020)
Fig. 1. Schematic of unit step response of low-pass filter
Fig. 2. Schematic of voltage data for temperature measurement
Fig. 3. Block diagram of temperature measurement system
Fig. 4. Application scenarios of uncertainty evaluation method of digital mean filter
Fig. 5. Temperature data of a blackbody
Fig. 6. Temperature data of the black body near 30.874 ℃
Fig. 7. Rate of temperature change data of the black body near 30.874 ℃
Fig. 8. Histogram of probability distribution of the black-body temperature change rate at 30.874 ℃ and its normal function fitting
Fig. 9. Relationship between uncertainty caused by digital mean filter and sampling period
Fig. 10. Relationship between uncertainty caused by digital mean filter and filter length
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