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毕业论文-红外快速检测人体温度装置的设计与研制.doc
51页1、编号: 200600802079 毕业设计题 目 红外快速检测人体温度装置的设计与研制 指导教师 王春玲 学生姓名 秦军红 学 号 200600802079 专 业 电子信息工程 教学单位 物理系 (盖章) 二O一O年 六月 一日目 录摘要及关键词引言1. 设计思路与原理方框图1.1设计思路1.2系统方框图及测量原理2. 器件选择2.1红外器件的选择2.2 LM358放大器件2.3温度传感器DS18B202.4 A/D转换器TLC5492.5 AT89C51单片机2.6显示器件LM016L3.电路设计3.1复位电路设计3.2上下限温度控制电路3.3报警电路3.4显示电路3.5 P7187红外传感电路4. 系统的调试仿真5.源程序参考文献致谢 红外快速检测人体温度装置的设计与研制 秦军红(德州学院物理系,山东德州253023)摘 要 系统由红外热释传感器、温度传感器DS18B20、高精度放大器、A/D转换器TLC549、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
2、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。具有温度分辨率高、响应速度快、不扰动被测目标温度分布场、测量精度高和稳定性好等优点;同时也有测量值受被测物体发射率、反射热源、气氛干扰影响的弱点。关 键 词 红外热释传感器;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;超标报警Abstract This system by infrared pyroelectric sensor, temperature sensor DS18B20, high accuracy amplifier,A/D switch TLC549, AT89C51 microcomputer master control part constitution ,decoding demonstration module and warning circuit . Realized the non-contact type infrared clinic
3、al thermometerIt can be accurate in shorter 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 principle, 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 atta
4、ch the source program. Follow-on trend of abroad digitize was at present complied with in the design of this system, and the exploit singly merit of piece machine and numerical control system makes the each side function of system get the notable raise. With a temperature high resolution, fast response, non-disturbance measured target temperature distribution field, high accuracy and stability and good; also have measured values by the measured object emissivity, reflective heat, the atmosphere
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