毕业设计--红外快速检测人体温度装置的设计与研制

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1、红外快速检测人体温度装置的设计与研制 摘 要 系统由TPS334红外温度传感器、高精度放大器、双通道16位串行A/D转换 器AD7705、AT89C51单片机、译码显示模块与报警电路等部分构成，实现非接触 式红外快速测温，它能够在较短的时间内准确测量出人体的温度，而在测得温度超出 某一范围时即启用报警电路进行超标报警。文中提出了具体设计方案，讨论了红外非 接触式体温计的基本原理，进行了可行性论证。给出了电路图和程序流程图并附有源 程序。由于利用了单片机及数字控制系统的优点，系统的各方面性能得到了显著的提 高。 关键词：红外温度传感器；快速检测；非接触测量；A/D 转换器；单片机；译码显 示；超

2、标报警 Abstract This system by tps334 infrared temperature sensor, high accuracy amplifier，A/D switch AD7705, AT89C51 microcomputer master control part constitution ,decoding demonstration module and warning circuit . Realized the non-contact type infrared clinical thermometerIt can be accurate in shor

3、ter time to measure a temperature of human body, but at measure the temperature outrun some one scope be in use to report to the police electric circuit to carry on a super mark to report to the police namely. In the article discussed the infrared non- contact type clinical thermometer basic princip

4、le, proposed the concrete design proposal, and has carried on the feasible proof. And we have produced the circuit diagram and the program flow diagram and attach the source program. Follow-on trend of abroad digitize was at present complied with in the design of this system, and the exploit singly

5、merit of piece machine and numerical control system makes the each side function of system get the notable raise. Key words: infrared temperature sensor， fast check， non contact measurement, A/D switch，single chip computer, decoding demonstration, excess warning 目 录 前言1 第章 设计思路与原理方框图2 1.1 设计思路2 1.2 方案比较2 1.3 系统方框图及测量原理3 第 2章 单元电路设计5 2.1 传感器的选用5 2.2 测量电路设计9 2.3 信号处理电路设计11 2.4 译码显示电路设计21 2.5 报警电路22 2.6 电源电路设计22 第3章 系统组成与工作原理23 3.1 系统组成23 3.2 系统工作原理23 第4章 软件设计2