| 压力传感器信号调理模块的设计与实现 |
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| 引用本文： | 周静,田文鹤.压力传感器信号调理模块的设计与实现[J].仪表技术与传感器,2011(1). |
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| 作者姓名： | 周静 田文鹤 |
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| 作者单位： | 西安石油大学井下测控研究所,陕西,西安,710065 |
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| 基金项目： | 国家高科技研究发展计划(863计划)，国家科技重大专项课题 |
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| 摘 要： | 文中设计的调理电路模块主要用于压力传感器微弱信号的放大调理,该模块使用自动稳零技术的精密仪表放大器AD8230作为放大模块,且针对井下工作环境中的噪声影响,设计了相应的滤波电路.此外,为了满足井下钻柱内安装的尺寸要求,采用了小容量的镍电容代替了大容量的钽电容.这样不但提高了压力传感器采集数据精确性,且AD8230具有的自稳零功能极大的减小了电路中零点漂移的影响,也减小了信号放大后的误差,从而提高了压力传感器的测量精度及可靠性.
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| 关 键 词： | 压力传感器 自动稳零 零点漂移 可靠性 |
Design and Implementation of Pressure Sensor Signal Conditioning Module |
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| ZHOU JING,TIAN Wen-he.Design and Implementation of Pressure Sensor Signal Conditioning Module[J].Instrument Technique and Sensor,2011(1). |
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| Authors: | ZHOU JING TIAN Wen-he |
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| Affiliation: | ZHOU JING,TIAN Wen-he(Institute of Measurement and Control,Xi'an Shi You University,Xi'an 710065,China) |
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| Abstract: | The design of the conditioning circuit module was used to amplify the weak signal of pressure sensor,the module used precision instrumentation amplifier AD8230 with the auto-zero technology as the amplifier module.And this paper designed the corresponding filter circuit for noise of underground work environment.In addition,in order to meet the size requirement that was installed in the underground drill string,it used a small volume of nickel capacitor instead of a large-capacity tantalum capacitors.This wi... |
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| Keywords: | AD8230 |
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