Abstract
Point-of-care (POC) devices continuously monitor vital signs and provide health suggestions to users. However, the devices are not affordable to everyone due to their cost. Here, we design a POC device that can continuously estimate vital signs using fewer sensors and lower costs. We do so by measuring photoplethysmogram signals and temperature and then estimating the heart rate, blood oxygen saturation, respiration rate, and blood pressure. For keeping the vital data secure, an auto-encoder and a convolutional neural network were also used for encryption and abnormality detection, respectively. Tests on the hardware showed the design accurately obtained users' vitals. The proposed design is expected to be generalized to obtain other vitals and fabricated at a low cost, making it affordable to all people.
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