| 基于单片机的多点温度测量仪的设计 |
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| 引用本文： | 于相斌,张庆国,田辉.基于单片机的多点温度测量仪的设计[J].微型机与应用,2011,30(8). |
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| 作者姓名： | 于相斌 张庆国 田辉 |
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| 作者单位： | 空军航空大学航空控制工程系,吉林长春,130022 |
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| 摘 要： | 提出一种以热敏电阻为温度传感器,经电阻-脉宽转换电路将热敏电阻的输出转换为脉宽信号,再由PIC16F876单片机进行处理,以实现多点温度显示的温度测量仪.采用比较法消除了电阻-脉宽转换电路由于器件参数变化造成的测量误差,提高了测量精度.该多点温度测量仪具有数字显示温度和以RS232串口输出温度的功能.
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| 关 键 词： | 单片机 热敏电阻 电阻-脉宽转换电路 RS232串口 |
Design of multipoint thermometer based on single chip computer |
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| Yu Xiangbin,Zhang Qingguo,Tian Hui.Design of multipoint thermometer based on single chip computer[J].Microcomputer & its Applications,2011,30(8). |
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| Authors: | Yu Xiangbin Zhang Qingguo Tian Hui |
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| Affiliation: | Yu Xiangbin,Zhang Qingguo,Tian Hui(Department of Control Engineering,Aviation University of Air Force,Changchun 130022,China) |
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| Abstract: | This paper introduced a multipoint thermometer.This thermometer takes the semiconductor thermoresistor as sensor.The output of the sensor is turned into pulse width by means of a resistance-pulse width converting circuit.A single chip computer deal with the pulse width signal to realize the temperature indication.A comparison method is adopted to eliminate the measuring error of the resistace-pulse width converting circuit caused by the circuit parameter changes and the measuring pricision is improved.The m... |
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| Keywords: | single chip computer semiconductor thermoresistor RS232 interface resistance-pulse width converting circuit |
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