Title :
Drips detection sensor of cylindrical surface capacitor
Author :
Wenzhao Zhang ; Wenzhen Zhou ; Zhizhuang Liu
Author_Institution :
Dept. of Electron. Eng., Hunan Univ. of Sci. & Eng., Yongzhou, China
Abstract :
The detection on drips velocity is used extensively in medicine or other field such as micro-flow measurement. A cylindrical capacitor sensor is manufactured for drips detection and micro-flow measurement with counting method. The cylindrical capacitor wave when a drip fall into or pass through it; a digital pulse signal is obtained by a chip which is employed to convert capacitance to digital value, then the drips velocity is acquired by using microprocessor. The experimental results have shown that the drips capacitor sensor can be used to detect liquid drops, its precision is prior to 99%.
Keywords :
capacitive sensors; flow measurement; microprocessor chips; microsensors; counting method; cylindrical surface capacitor sensor; digital pulse signal; drips capacitor sensor; drips detection sensor; microflow measurement; microprocessor; Capacitance; Capacitors; Educational institutions; Fluid flow; Instruments; Plastics; Ultrasonic variables measurement; AD7150; Capacitance digital converter; Capacitor sensor; Cylindrical surface capacitor; Drips detection;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6057536
