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InvenSense® Enables Continuous Heart Rate Monitoring With Vital Sign Monitoring System Solutions Using 6-Axis Inertial Sensors


InvenSense, Inc. (INVN), the leading provider of intelligent sensor system on chip (SoC) for Motion and Sound, announced its motion artifact correction and heart rate variation platform solutions for Photoplethysmography (PPG) sensors. PPG technology consists of light-emitting diodes (LEDs) and photodetectors to monitor pulse rate noninvasively. InvenSense’s HRM sensor system solutions enable in-activity and continuous heart rate monitoring by removing the motion artifact signal from the PPG signal using its 6-axis integrated MEMS (3-axis accelerometer + 3-axis gyroscope) device to deliver accurate heart rate (beats-per-minute) monitoring during elevated motion activities. The HRM system solution also measures the R-R interval (the interval from the onset of one R wave to the onset of the next one, during one complete cardiac cycle) while static. This is used to calculate Heart Rate Variability (HRV), a new biometric that wearable devices are now providing their users to help determine overall wellness and stress level.

PPG sensors for heart rate monitoring are fast becoming a standard sensor in mid-to-high-end wearable devices like smart watches, activity monitors, and Bluetooth headsets. Yet, the limitation with many of today’s smart watches and activity trackers using PPG sensors is that they either...