| 有害气体检测仪设计中的数据处理 |
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| 引用本文： | 王孝良,周广辉,安毅.有害气体检测仪设计中的数据处理[J].仪表技术与传感器,2006(3):12-13. |
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| 作者姓名： | 王孝良 周广辉 安毅 |
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| 作者单位： | 大连理工大学电子与信息工程学院,辽宁,大连,116024 |
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| 摘 要： | 文中给出了有害气体检测仪的总体结构及数据处理方法，采用了数字滤波算法来抑制有害气体检测过程中存在的复杂的现场噪声干扰；采用了一种基于二次方程和拉格朗日插值公式的软件校准方法，可代替传统的硬件调节电路，一次性完成对失调、量程及非线性的校准。同时，针对传感嚣灵敏度随时间下降的特点，提出了一种修正传感器灵敏度的方法。
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| 关 键 词： | 数字滤波 软件校准 灵敏度修正 |
| 文章编号： | 1002-1841（2006）03-0012-0002 |
| 收稿时间： | 2004-08-20 |
| 修稿时间： | 2005-10-02 |
Data Processing in Noxious Gas Detection Instrument |
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| WANG Xiao-liang,ZHOU Guang-hui,AN Yi.Data Processing in Noxious Gas Detection Instrument[J].Instrument Technique and Sensor,2006(3):12-13. |
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| Authors: | WANG Xiao-liang ZHOU Guang-hui AN Yi |
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| Affiliation: | School of Electronic and Information Engineering,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | Brought forward the gross structure and the data processing method of the noxious gas detection instrument which adopted digital filter algorithm to restraint the complied noise jamming in the procedure of noxious gas detecting,and adopted a software calibration method based on quadratic equation and Lagrange interpolation which can complete the adjustment to the maladjustment,range and nonlinearity at one time.According to the characteristic of the descending of the sensor's sensitivity with time,brought forward a method to amend the sensor's sensitivity. |
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| Keywords: | digital filter software calibration sensitivity amendment |
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