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