| 基于ATmega16A的低功耗高精度桥式温度测量系统设计 |
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| 引用本文： | 沈丹凤,来瑞俊,孔英会,田川.基于ATmega16A的低功耗高精度桥式温度测量系统设计[J].海洋技术,2012,31(1):58-61. |
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| 作者姓名： | 沈丹凤 来瑞俊 孔英会 田川 |
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| 作者单位： | 1. 华北电力大学电子与通信工程系,河北保定,071003
2. 国家海洋技术中心,天津,300112 |
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| 摘 要： | 当前温度测量应用越来越广泛,针对工农业及科研领域对低功耗及高精度测温的要求,系统描述了一个桥式测温系统的设计方案与工作原理。系统采用低功耗AVR单片机作为控制芯片,通过单臂分压将热敏电阻分压后的电压信号传入A/D转换芯片,再将A/D转换后的数字量送入单片机计算,从而得到热敏电阻阻值,最后通过曲线拟合算出所测温度值。系统能实现低功耗、高精度测温。
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| 关 键 词： | 低功耗 高精度 温度测量 |
Design of Low Power and High-precision Bridge Temperature Measurement System Based on ATmega 16A |
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| SHEN Dan-feng
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LAI Rui-jun
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KONG Ying-hui
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TIAN Chuan.Design of Low Power and High-precision Bridge Temperature Measurement System Based on ATmega 16A[J].Ocean Technology,2012,31(1):58-61. |
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| Authors: | SHEN Dan-feng LAI Rui-jun KONG Ying-hui TIAN Chuan |
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| Institution: | 1.Department of Electronics and Communication Engineering,North China Electric Power University,Baoding Hebei 071003,China;2.National Ocean Technology Center,Tianjin 300112,China) |
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| Abstract: | At present,temperature measurement is used widely to meet the low power and high-precision requirements of the industrial,agricultural and scientific research fields.The design of a bridge temperature measurement system and its working was described.A low-power AVR microcontroller was used as the control chip,which input the voltage signal to the A/D converter chip by the partial pressure arm,then input the digital signal of the A/D converter to SCM to get the thermal resistance.Finally,the temperature values were calculated by curve fitting.It can realize low power consumption,high precision temperature measurement. |
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| Keywords: | low power consumption high-precision temperature measurement |
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