OMRON's sensor is very small yet is sensitive enough to measure blood pressure from a person's finger. The secret is in its "donut structure" created through MEMS micromachining technology. Although conventional pressure sensors use a disc configuration, the new donut structure can enlarge the blood pressure sensing area to five times that of conventional sensors, enabling super-high sensitivity in detecting pressure levels. In addition, conventional measurement methods were based on the detection of pressure changes, so the readings were affected by ambient temperatures.
Donut-shaped MEMS pressure sensor built into digital blood pressure monitors
1. A conventional disc-type sensor can use only 10% of its total area for sensing.
2. MEMS-based donut-type sensor can increase the sensing area to 50% of its total area.
EVER TENEPPE 17767425