大学物理 ›› 2015, Vol. 34 ›› Issue (5): 44-44.

• 著者文摘 • 上一篇    下一篇

热电偶定标实验仪器的改进研究

张洁   

  1. 安徽理工大学理学院,安徽淮南230001
  • 出版日期:2015-05-25 发布日期:2015-05-20

Improvement of thermocouple calibration experiment instrument

  • Online:2015-05-25 Published:2015-05-20

摘要: 介绍了以单片机为核心,运用DS18820数字温度传感器设计改造的热电偶定标实验仪器.该设计改变了原仪器的构造与温控方式,运用单片机和继电器模拟脉冲宽度调制(PWM)方式实现智能温控,提高了控温的精度和达到热平衡的速度.

关键词: DS18820, 热惯性, 脉冲宽度调制

Abstract: The single-chip microcomputer as the core is introduced,the reconstruction design of DS18B20 di ital temperature sensor thermocouple is used to calibration experiment instrument. The design reforms the tradition mode of temperature control. The single- chip microcomputer and relay simulation of pulse width modulatic (PWM) is used to realize the intelligent temperature control, improving the precision of temperature control an reach thermal equilibrium speed.

Key words: DS18B20, thermal inertia, pulse width modulation ( PWM ).

中图分类号: 

  • O4-33