کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
566996 1452084 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research on Dynamic Method of Liquid Level Detection Based on the Probe Type Capacitance Sensor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزار
پیش نمایش صفحه اول مقاله
Research on Dynamic Method of Liquid Level Detection Based on the Probe Type Capacitance Sensor
چکیده انگلیسی

In the process of absorbing samples of automatic clinical analysis instruments, it has a lot of problems with single direction method, such as low accuracy, inaccurate of liquid absorbed, short sample and tip blocked. According to this problem, this paper applies dynamic method of level detection to capacitance sensor. In the method, the influence of the inertness of the motor drive and microcapillarity caused by the infiltration between probe and the liquid are reduced. At the same time, a grey dynamic filtering based on dynamic GM (1, 1) is used to improve the stability of capacitance sensor output. Finally, experiments are performed to verify the feasibility of the method. Compared with single direction method, the dynamic method improves the accuracy from 0.3 mm to 0.1 mm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AASRI Procedia - Volume 3, 2012, Pages 546-552