YOUSEFI NAJAFABADI, mohammadreza, bastani, behnam, ABRISHAMI MOGHADAM, hamid, GHARIBZADEH, SHAHRIAR, ASGARI, zahra (2006). TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING. , 6(1), 85-93.
mohammadreza YOUSEFI NAJAFABADI; behnam bastani; hamid ABRISHAMI MOGHADAM; SHAHRIAR GHARIBZADEH; zahra ASGARI. "TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING". , 6, 1, 2006, 85-93.
YOUSEFI NAJAFABADI, mohammadreza, bastani, behnam, ABRISHAMI MOGHADAM, hamid, GHARIBZADEH, SHAHRIAR, ASGARI, zahra (2006). 'TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING', , 6(1), pp. 85-93.
YOUSEFI NAJAFABADI, mohammadreza, bastani, behnam, ABRISHAMI MOGHADAM, hamid, GHARIBZADEH, SHAHRIAR, ASGARI, zahra TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING. , 2006; 6(1): 85-93.

TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING

The Modares Journal of Electrical Engineering
Article 7, Volume 6, Issue 1, 2006, Pages 85-93    PDF (1.03 M)
Authors
mohammadreza YOUSEFI NAJAFABADI1; behnam bastani* 2; hamid ABRISHAMI MOGHADAM2; SHAHRIAR GHARIBZADEH3; zahra ASGARI4
1islamic azad university khomeini shahr
2K.N.Tossi university of technology
3Amirkabir university of technology
4Tehran university of medical sience
Abstract
Home Uterine Activity Monitoring (HUAM) has demonstrated to be of great value for preventing preterm labor in recent years. In this research, a low cost monitoring device for non-invasive monitoring of the uterine activity in pregnant women is presented. The new device has been designed based on an inductive Colpitz oscillator and vertical displacement of a ferrite core in a coil. The resulting frequency of the oscillator is proportional to the pressure in the external surface of the abdomen. This frequency is measured by the portable monitor. A low-power static random access memory (SRAM) provides long-term data storage. The proposed sensor for detecting uterine contractions has light weight, high stability and low cost. This sensor is very simple to manufacture and use for long-term ambulatory monitoring of the uterine activity. Furthermore, this sensor can be calibrated using software. Other features of the sensor are, resolution of 0.13 mmHg, repeatability close to 96% and input range from 0 to 95.32 mmHg.
Keywords
PERSSURE MEASUREMENT; UTERINE ACTIVITY MONITORING; AMBULATORY PERSSURE; LONG-TERM UTERINE CONTRACTION MONITORING T; PRETERM LABOR DETECTION
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