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Photoplethysmography (PPG) is a technique used by the majority of wearables with heart rate monitors to calculate heart rate. PPG is a scientific term for illuminating the skin and calculating the amount of light scattering caused by blood flow.
Although it’s oversimplified, PPG sensors work on the principle that light entering the body would scatter predictably when the blood flow dynamics change, such as with changes in blood volume or blood pulse rates (heart rate) (cardiac output).
In the past five to ten years, PPG sensor advances have been concentrated on consumer and medical wearable technology. This called for a revolutionary advancement known as motion-tolerant PPG.
PPG sensors use four primary technical components to measure heart rate:
The Global Optical Sensor for Heart Rate Monitor market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Recently, ROHM announced the availability of an optical heart rate sensor designed specifically for wearable gadgets like sports bands and smart watches.
In order to increase sensitivity and enable accurate pulse wave detection even with low LED brightness, the BH1790GLC makes use of patented analogue circuit technology and optical sensor know-how. This results in a class-leading low power consumption.
In order to create an optical sensor for heart rate monitoring that is tailored for wearables and satisfies market demands for low battery consumption and high accuracy, ROHM draws on optical sensor development expertise and IR elimination technologies developed over a number of years.
High accuracy detection is made possible by a sophisticated optical filter, which also increases battery life and 10x lessens the impact of IR rays compared to standard devices.
