Title :
Monitoring long-term uterine contractions
Author :
Wu, Han-Chang ; Lin, Chao-Hung ; Young, Shuenn-Tsong ; Kuo, Te-Son
fDate :
6/1/2002 12:00:00 AM
Abstract :
The proposed system for long-term uterine contraction monitoring includes a pressure sensor and a portable monitor. The pressure sensor converts uterine activities into frequency variations from 1 to 2 MHz. The portable monitor is a microcontroller-based embedded system. We chose the 89c52 microcontroller because of its intelligence and functionality. A CMOS counter serves as a frequency down-converter for scaling down the frequency variation from 50 to 100 kHz
Keywords :
CMOS integrated circuits; biomedical equipment; biomedical measurement; computerised instrumentation; computerised monitoring; patient diagnosis; portable instruments; pressure measurement; pressure sensors; CMOS counter; ambulatory uterine contraction monitoring; frequency variation from 50 to 100 kHz; frequency variations from 1 to 2 MHz; microcontroller-based embedded system; portable monitor; pressure sensor; Counting circuits; Energy management; Frequency; Intelligent sensors; Liquid crystal displays; Microcontrollers; Monitoring; Oscillators; Random access memory; Sensor systems;
Journal_Title :
Instrumentation & Measurement Magazine, IEEE
DOI :
10.1109/MIM.2002.1005658
