Title :
Noise-tolerant switched-capacitor time-delay measurement system for micro-fluidic flow sensing
Author :
Law, Waisiu ; Afromowitz, Martin A.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
The delay between an electrical signal and its delayed replica is measured by a switched-capacitor sum of absolute differences analog method. The core circuitry is implemented in a custom integrated circuit. We have proven with simulations and measured results that the system is capable of measuring the delay even in the presence of considerable added noise
Keywords :
analogue processing circuits; application specific integrated circuits; delays; flowmeters; microfluidics; switched capacitor networks; added noise; custom integrated circuit; micro-fluidic flow sensing; sum of absolute differences analog method; switched-capacitor analogue IC; time-delay measurement system; Delay effects; Dielectrics; Electric variables measurement; Electrodes; Fluid flow measurement; Integrated circuit measurements; Integrated circuit noise; Noise measurement; Signal generators; Ultrasonic variables measurement;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.856062
