Volume 6, Issue 1 (2006)                   MJEE 2006, 6(1): 85-93 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

YOUSEFI NAJAFABADI M, bastani B, ABRISHAMI MOGHADAM H, GHARIBZADEH S, ASGARI Z. TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING. MJEE. 6 (1) :85-93
URL: http://mjee.modares.ac.ir/article-17-4728-en.html
1- islamic azad university khomeini shahr
2- K.N.Tossi university of technology
3- Amirkabir university of technology
4- Tehran university of medical sience
Abstract:   (2814 Views)
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.
Full-Text [PDF 1055 kb]   (1409 Downloads)    

Received: 2005/01/30 | Accepted: 2007/01/31 | Published: 2007/03/2

Add your comments about this article : Your username or Email:
CAPTCHA