| 血液粘度仪旋转锥体角速度误差分析与补偿 |
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| 引用本文： | 唐俊铨,田学隆. 血液粘度仪旋转锥体角速度误差分析与补偿[J]. 传感器与微系统, 2011, 30(1): 60-62,82 |
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| 作者姓名： | 唐俊铨 田学隆 |
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| 作者单位： | 唐俊铨,TANG Jun-quan(重庆大学,生物工程学院,重庆,400030);田学隆,TIAN Xue-long(重庆市医疗电子技术工程研究中心,重庆,400030) |
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| 基金项目： | 重庆市重点科技攻关计划资助项目 |
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| 摘 要： | 剪切池内旋转锥体的角速度是新型锥板式血液粘度仪的主要信息源,其精度取决于光电传感器和齿形盘.分析了光电传感器的点光源特性和齿形盘的周期性摆动及其加工精度导致的角度误差.针对锥体角速度的单调递减特性、角度误差在单转内的随机性及整个测量过程中呈周期性,采用有理三次样条插值算法对角速度误差进行补偿.实验结果表明:该方法可提高...
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| 关 键 词： | 角速度 光电传感器 齿形盘 有理三次样条插值算法 |
Error analysis and compensation of blood viscometer rotating cone angular velocity |
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| TANG Jun-quan,TIAN Xue-long. Error analysis and compensation of blood viscometer rotating cone angular velocity[J]. Transducer and Microsystem Technology, 2011, 30(1): 60-62,82 |
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| Authors: | TANG Jun-quan TIAN Xue-long |
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| Affiliation: | 1.College of Bioengineering,Chongqing University,Chongqing 400030,China;2.Chongqing Engineering Research Center for Medical Electronics Technology,Chongqing 400030,China) |
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| Abstract: | The angular velocity of rotating cone in shear-pool is the main information source of a cone-plate blood viscometer,and its precision depends on the photoelectric sensor and fluted disc.The error sources of angular velocity device are analyzed,that is,the pointolite characteristic of photoelectric sensor,and the angular error due to the cyclical swing and the machining inaccuracy of fluted disc.Since the cone angular velocity is monotone decreasing and the angular error is random in one cycle but is cyclical variation during the whole detecting process,a rational cubic spline interpolation algorithm is adopted to decrease the angular error.Experimental results show that this method can improve the precision of angular velocity and reduce the production cost of sensor. |
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| Keywords: | angular velocity photoelectric sensor fluted disc rational cubic spline interpolation algorithm |
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