论文总字数：20944字

摘 要

随着社会发展的迅速发展，SARS、禽流感、H1N1流感等流行病相继开始出现。尤其今年在世界范围内爆发了新的冠状病毒，导致温度计的要求越来越高。传统的水银体温计由于响应时间长、需要与人体接触等缺点，已经不适合在当前疫情环境下作为检查站人员测量过往人员体温使用。因此本课题设计了一种具有较高的灵敏度和精度、较快的响应时间以及较广的测温范围的红外测温仪。

本文致力于人体红外测温系统的研究，对人体测温当前的现状以及红外测温应用的原理进行了介绍，并对系统硬件配置、ARM处理器以及软件设计进行了阐述，并设计了相应的实验。从硬件配置来看，该系统的构成主要有超声波测距控制模块，红外传感器，环境温度控制器和ARM外围电路。软件设计使用ARM公司的Real View MDK集成开发环境进行来基于C语言执行参数设置。考虑到外部因素对红外温度测量的危害，在使用红外温度测量时，基于间隙元素和环境温度，设计了相应的实验，并对实验获取的数据进行了分析，进而为该系统的发展提高了基础。实验结果得出，相比于其他系统，人体红外测温系统在距离和环境温度上具有补偿功能，进而有助于降低由于距离和环境温度等因素带来的影响，且该系统具有较高的灵敏度和准确度、功耗较少、较快的响应速度且无需和被测物体进行接触等特点，因此，在人流量大、密集的场所应用较多，能够对人体温度进行准确快速的测量。

关键词：ARM 红外测温 超声波测距 温度补偿 距离补偿

Electronic thermometer based on stm32

Abstract

With the rapid development of society, SARS、 avian influenza, H1N1 influenza and other epidemics have begun to appear. This year, in particular, the outbreak of new coronavirus worldwide, resulting in higher demand for thermometers. Traditional mercury thermometers are no longer suitable for use as checkpoint personnel to measure the temperature of past personnel in the current epidemic environment due to the short response time and the need to contact human bodies. Therefore, this subject has designed an infrared thermometer with higher sensitivity and accuracy, faster response time and wider temperature measurement range.

Based on the research of infrared temperature measurement system, this paper introduces the current situation of infrared temperature measurement and the principle of infrared temperature measurement application, and describes the hardware configuration, ARM processor and software design of the system. From the hardware configuration, the system is mainly composed of ultrasonic distance measurement control module, infrared sensor, ambient temperature controller and ARM peripheral circuit. Software design uses ARM company's Real View MDK integration development environment to perform parameter settings based on C language. Taking into account the hazards of external factors to infrared temperature measurement in the use of infrared In temperature measurement, the corresponding experiments are designed based on gap elements and ambient temperature, and the data obtained from the experiments are analyzed, which improves the foundation for the development of the system. The experimental results show that compared with other systems, the infrared temperature measurement system has the function of compensation in distance and ambient temperature, which is helpful to reduce the influence of distance and ambient temperature, and the system has the characteristics of high sensitivity and accuracy, less power consumption, faster response speed and no contact with the object under test.

Keywords：ARM; Infrared Temperature Measurement; Ultrasonic Distance measurement; Temperature Compensation; Distance Compensation

目 录

摘 要 I

ABSTRACT II

第一章 绪论 1

1.1研究目的及意义 1

1.1.1研究背景及现状 1

1.1.2研究意义 1

1.2研究内容 1

第二章 需求分析及方案设计 3

2.1需求分析 3

2.2 系统的整体方案 3

2.2.1 设计原理 4

2.2.2 系统设计 4

2.3 模块的方案设计 5

2.3.1 STM32控制方案的设计 5

2.3.2 红外测温模块方案设计 5

2.3.3 测距模块方案设计 6

2.3.4 环境温度测量模块方案设计 6

第三章 基于STM32的电子体温计系统的硬件设计 7

3.1 电子体温计总体硬件结构的设计 7

3.2 电源模块 7

3.2.1 5V电源模块 7

3.2.2 3V电源模块 8

3.3最小系统模块 8

3.3.1单片机 8

3.3.2滤波电路 9

3.3.3晶振电路 9

3.3.4 SWD下载电路 10

3.3.5复位电路 11

3.3.6蜂鸣器电路 12

3.3.7人机交互（蓝牙模块） 12

3.4红外测温模块 13

3.4.1红外传感器的选用 13

3.4.2红外测温模块电路 13

3.5超声波收发模块 14

3.5.1超声波传感器的选择 14

3.5.2超声波收发电路 15

图3.12 超声波收发模块电路图 16

3.6环境温度测量模块 16

3.6.1环境温度传感器的选用 16

3.6.2环境温度测量电路 17

第四章 基于STM32的电子体温计系统软件设计 18

4.1软件总体设计 18

4.2初始化模块 19

4.3环境温度测量模块 19

4.4超声波测距模块 20

4.5红外测温模块 21

4.6按键输入与蜂鸣提示 22

第五章 系统开发环境及相关实验 23

5.1系统软件的开发环境 23

5.2环境温度对红外测温的影响 23

5.3红外测温受距离因素的影响 24

第六章 总结与展望 27

参考文献 28

致谢 30

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