| 气压传感器信号采集与非线性校正 |
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| 引用本文： | 杨雷,卢广建,范保松.气压传感器信号采集与非线性校正[J].传感器与微系统,2005,24(9):13-15. |
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| 作者姓名： | 杨雷 卢广建 范保松 |
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| 作者单位： | 1. 东莞理工学院,广东,东莞,523106
2. 河南省气象局,河南,郑州,450003 |
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| 摘 要： | 利用电激励谐振筒式气压传感器测量气压,电激励谐振筒式气压传感器输出信号的频率与气压呈非线性关系,且与环境温度有关。通过对信号进行分频准确测量出信号的周期和频率,A/D转换测量环境温度进行温度补偿,用曲线拟合法准确计算出气压,气压测量的范围为450~1 100 hPa,测量误差小于0.3 hPa。
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| 关 键 词： | 气压传感器 频率测量 温度补偿 曲线拟合 |
| 文章编号： | 1000-9787(2005)09-0013-03 |
| 收稿时间： | 03 25 2005 12:00AM |
| 修稿时间： | 2005年3月25日 |
Signal acquisition and nonlinear correction for atmospheric pressure transducer |
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| YANG Lei,LU Guang-jian,FAN Bao-song.Signal acquisition and nonlinear correction for atmospheric pressure transducer[J].Transducer and Microsystem Technology,2005,24(9):13-15. |
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| Authors: | YANG Lei LU Guang-jian FAN Bao-song |
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| Abstract: | Electricity-indeced resonator pressure transducer is used to meaure atmospheric pressure.The output signal of electricity-indeced resonator pressure transducer is a rectangular wave.The signal's frequency is nonlinear with the atmospheric pressure.The realation is related to environment temperature.Using frequency divided,the signal frequency can be measured accurately.Using the A/D converter,the environment temperature is measured.Then the atmospheric pressure can be calculated accurately by means of the curve fitting and temperature compensation.The measuring range of atmospheric pressure is 450~1100hPa.The error is less than 0.3hPa. |
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| Keywords: | atmospheric pressure transducer frequency measurement temperature compensation curve fitting |
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