红外式人体温度测量系统的设计论文.doc

xxxxxx大学本科毕业设计·论文 PAGE PAGE \* ROMAN I 摘 要 传统的体温测量仪器大多是采用物理原理，大多数是根据水银等随温度升降的热胀冷缩的性质原理设计的，通过读取刻度值来判断温度值，这种方法操作起来不太方便，使用范围比较局限，而且测量所需要的时间较长【1】。为了解决快速测量和高精度的问题，本设计提供了一种新的温度测量方案，本系统是由TS118-3红外线温度传感器、16位双信道串行A/D高精度放大器AD7705、STC89C52单片机、LCD1602液晶显示器、DS1302时钟电路和报警电路等构成，从而实现了非接触式红外快速测温的目的，它能够在较短的时间内准确测量出人体的温度，当测得的温度超出设定范围时即自动启用报警电路进行超标报警，并且还能显示当前测温的时间。运用比较方便，功能较多。 本文对该系统提出了具体的设计方案，讨论了红外线非接触式体温测量的基本原理，进行了方案的可行性论证。同时设计出了电路图和程序流程图并编写有程序控制。由于利用了单片机及数字控制系统的优点，使得系统的各个方面的性能得到了显著的提高。 关键词：红外线温度传感器；非接触测量；A/D转换器；STC89C52单片机 A Design Of IR-style Temperature measuring system Student:xxx Teacher:xxx Abstract: Most of the conventional temperature measuring instruments is the use of physical principles, most of the mercury with the temperature according to thermal expansion and contraction movements of the nature of the design principles, by reading the scale value to determine the temperature, this method is not very convenient to operate, use of more limited, and the longer time required to measure【1】. In order to solve the problem of rapid measurement and high precision, the design of a new temperature measurement program, the system is composed of infrared temperature sensors TS118-3, 16-bit dual-channel serial A / D precision amplifier AD7705, STC89C52 microcontroller、 LCD1602 LCD monitor, DS1302 clock circuit and alarm circuits, etc., in order to achieve a rapid non-contact infrared temperature measurement purposes, it can be accurate in a short period of time to measure the body temperature, when the measured temperature exceeds the setting range enabled automatically when the alarm circuit excessive alarm, and also displays the current temperature of the time. The use of more convenient, more functions.  This article made specific to the system design discussed non-contact infrared temperature measurement principle, carried out the feasibility demonstration. Also designed the circuit and program flow