The design uses special-purpose medical temperature-measurement probe MLX90615-DAA and main controller MSP430 for temperature source data collection and processing based on the principle of blackbody thermal radiation

and correction lookup algorithm and twice linear regression calibration algorithm is respectively used for temperature value calculation and calibration

71 contrast experiments of simultaneous temperaturemeasurement are conducted by using the prototype and blackbody standard. The root mean square error between temperature-measurement result of the prototype（ Lab

t

Tr） and value-setting result of blackbody standard（ Std

t

Tr） is 0. 085 ℃

a

nd correlation coefficient is 0. 999 5（ p

<

0. 001）. Bland-Altman plot show that the mean absolute bias of Lab

t

Tr and Std

t

Tr is 0. 006 9 ℃

98. 6 %（ 70/71） points are within 95 % confidence interval of agreement limits. The experimental results show that the temperature-measurement results by the prototype and the blackbody standard are in good agreement.