为了克服传统的温度计测量温度的主要缺点——需要测量者与被测目标近距离接触和测量不方便。在顾及仪器测量高精度前提下,以追求最低成本为原则,本文设计了红外测温仪的整体系统构架。接着根据热释电原理,主要针对人体体温测量进行了具体的设计开发,开发包括硬件电路,外围工艺,单片机程序和主机程序。并利用设计出来的红外测温仪在环境温度30℃下对人体温度和水温进行了测量,对人体的温度测量的误差低于±0.1℃。
To decrease the limitation of traditional method of temperature measuring such as close contact between measurer and the target and inconvenience when measuring, we develop a Infrared thermometer for human body under the premise of high measuring accuracy and low cost. The hardware design, the craft of outer model, the MCU program and the host program are specifically introduced. At the last, we used the proposed infrared thermometer to measure the temperature of human body and the water separately, the results show that the error of measuring human body temperature can reach ±0. 1℃ and under, while the error of measuring water temperature is relatively higher.