非接触式的红外测温系统

摘要

红外模组是汇集其视场内目标的红外辐射能量，将红外能量聚焦在光电探测仪上并转变为相应的数字信号的传感器，它具有非接触测温方式、温度分辨率高、响应速度快、不扰动被测目标温度分布场、测量精度高、稳定性好和使用寿命长等一系列优点，比传统的接触式测温有更多的场合适应性。

本文介绍了一种基于单片机实用温度实时检测和记录系统。它的设计思路主要是利用红外模组传感器，采集人体发射出的红外线，得到数字信号送入单片机，由MCS-51单片机通过温度补偿来实现温度值的转换并送入LCD1602显示和超温声光报警功能，同时通过无线模块进行中短距离传输到PC机和组态王Kingview进行数据的保存和后台处理等功能。本设计实现了非接触式的温度测量，并且感应时间在3秒以内，分辨力达到0.01°C,精度在0.5°C以内，实现了无线传输到组态王的控制，并且在组态王上实现了温度的存储、查询、报表显示等多种功能。

关键词：红外测温系统；非接触式；组态王；无线传输

Abstract

The Infrared module is to bring together its field of view infrared radiation energy goals will focus infrared energy on a photoelectric detector and digital signal into a corresponding sensor, which has non-contact temperature measurement method, temperature, high resolution, fast response, without disturbing the measured target temperature distrbution field, high accu- racy, good stability and long life and a series of advantages over traditional contact-type temperature adaptability more occasions.

This paper introduces a practical temperature based on single chip real-time detection and recording system. Its design concept is the use of the main infrared sensor module to collect the body emits infra-red, get the digital signal into the microcontroller, the MCS-51 microcontroller to achieve temperature compensation by the conversion temperature and over-temperature into the LCD1602 display and sound and light alarm , Through short-range wireless module for transmission to the PC, and Kingview preservation and back-office data processing functions. The Design and Implementation of a non-contact temperature measurement, and induction time of 3 seconds or less, resolution to 0.01 ° C, accuracy 0.5 ° C or less, to achieve the wireless transmission to the configuration control of the king and the king on the configuration Achieved temperature storage, query, report shows and other features.

Key Words：Infrared temperature measurement system;non- contact;Kingview;wireless- -transmission

目录

引言 (1)

1 红外测温系统的设计背景 (2)

1.1 单片机发展历程 (2)

1.2 体温计的发展历程 (3)

2 红外测温技术简介 (4)

2.1 温度测量技术的概述 (4)

2.2 红外测温原理 (4)

2.3 红外测温的方法 (5)

3 红外测温系统的总体方案选择 (6)

3.1 重要模块的方案对比与选择 (6)

3.1.1温度传感器的选择 (6)

3.1.2无线传输模块选择 (6)

3.1.3显示模块的选择 (6)

3.2 芯片和组态王介绍 (6)

3.2.1主从控制器STC89C51 (7)

3.2.2红外模组TN_9 (8)

3.2.3无线收发CC1100E (9)

3.2.4电平转换芯片MAX232 (11)

3.2.5液晶1602 (12)

3.2.6稳压芯片LM2576 (14)

3.2.7组态王Kingview (14)

3.3 系统硬件总体设计方案 (16)

3.4 系统软件设计方案 (17)

4 红外测温系统的硬件设计 (18)

4.1 主从单片机处理模块 (18)

4.2 TN-9红外测温模块接口设计 (18)

4.3 无线收发CC1100E模块接口设计 (19)

4.4 RS232A电平转换模块 (20)

4.5 液晶显示和声光报警模块 (21)

4.6 键盘模块 (21)

4.7 电源设计模块 (22)

5 红外测温系统的软件设计 (24)

5.1 主程序的设计 (24)

5.1.1主控制器的主程序模块 (24)

5.1.2从控制器的主程序模块 (25)

5.2 TN_9红外测温程序模块 (26)

5.3 无线收发CC1100E程序模块 (29)

5.3.1无线发送程序 (29)

5.3.2无线接收程序 (30)

5.4 键盘扫描程序模块 (31)

5.5 组态王与单片机通信程序模块 (33)

5.6 组态王应用设计 (34)

6 系统调试和性能分析 (38)

6.1 所用仪器 (38)

6.2 焊接与调试过程 (38)

6.3 测温系统的误差分析 (38)

6.4 系统性能分析 (39)

6.5 如何减小误差 (39)

7 结论 (40)

谢辞 (41)

参考文献 (42)

附录 (43)