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.
YOUSEFI NAJAFABADI, M., bastani, B., ABRISHAMI MOGHADAM, H., GHARIBZADEH, S. & ASGARI, Z. (2006). TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING. The Modares Journal of Electrical Engineering, 6(1), 85–93.
MLA
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", The Modares Journal of Electrical Engineering, 6, 1, 2006, 85–93.
HARVARD
YOUSEFI NAJAFABADI, M., bastani, B., ABRISHAMI MOGHADAM, H., GHARIBZADEH, S., & ASGARI, Z. (2006). 'TECHNICAL NOTE: A LOW COST PRESSURE SENSOR FOR LONG-TERM UTERINE CONTRACTION MONITORING', The Modares Journal of Electrical Engineering, 6(1), pp. 85–93.
CHICAGO
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." The Modares Journal of Electrical Engineering, 6 1 (2006): 85–93,
VANCOUVER
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. The Modares Journal of Electrical Engineering. 2006;6(1):85–93.
The Modares Journal of Electrical Engineering