人体红外测温仪

目录

摘要................................................................................................................................................. I Abstract .......................................................................................................................................... II 第一章红外线测温仪的研发背景 (1)

1.1红外测温仪的实际应用 (1)

1.2红外测温技术的发展历程 (1)

第二章人体红外测温仪的原理和特点 (2)

2.1人体红外线测温仪的理论依据 (2)

2.2人体红外线测温仪的性能指标及作用 (2)

2.3影响温度测量的主要因素及修正方法 (3)

2.4人体红外线测温仪的特点 (5)

第三章人体红外测温仪的硬件设计 (6)

3.1总体设计 (6)

3.1.1 整体框图设计 (6)

3.1.2 电路设计 (7)

3.2温度传感器 (8)

3.3放大电路的设计 (8)

3.4模数转换部分电路 (9)

3.5LCD1602显示电路 (10)

第四章软件设计 (12)

5.1红外测温仪的使用注意事项 (15)

5.2改进方案 (15)

5.3推广及应用 (15)

参考文献 (16)

致谢 (17)

附录1 PCB板图 (18)

附录2 3D效果图 (19)

附录3 程序 (20)

人体红外测温仪

摘要:为了克服传统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，研制了非接触式热释电红外测温仪，实现了对物体表面温度快速准确的测量。本文也设计了红外测温仪的整体系统构架。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，开发包括整体方案，硬件电路，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℃，提高了测量精度。人体测温仪的设计主要为适应人体体温快速无接触测量的需要。主要介绍热释电红外传感器的工作原理以及最适宜人体红外线检测的热释电传感器PM611的优点和等效电路，阐述了基于热释电传意器的红外测温仪的工作原理，讨论了该系统的设计与实现方法，简单介绍了测温系统的适用条件。

关键词：温度测量，热释电，A T89C51

Temperature measuring based on body infrared ray

Abstract: To decrease the limitation of traditional method of temperature measuring such as close contact between measurer and the target and inconvenience when measuring, we developed a non-contact type piezoelectric infrared thermometer, realizes fast and accurate surface temperature measurements. This article also designed the overall system architecture infrared thermometer. Then under the piezoelectric principle, aimed at human body temperature measurement for a specific design, development including hardware, peripherals technology, SCM, and the host program . Designed by using the infrared thermometer at ambient temperature 30℃,temperature and water temperature on the human body were measured on the human body temperature measurement error is less a ±0.1℃improve the measurement accuracy. This thermometer mainly applies to no-contact, speedy body-heat measurement. This article mainly introduces operational principles of piezoelectric infrared sensor and the structure of hydroelectrically sensor PM611.It formulates the theory of the thermometer based on hydroelectrically sensor and studies how to design and implement of the system．Finally，it indicates the conditional demand of the system.

Key words: temperature measurement, piezoelectric,AT89C51