Cuffless wearable blood pressure measurement system design with ECG and PPG signals

High blood pressure, which is one of the cardiovascular diseases, affects more people in the worldwide. In the diagnosis of high blood pressure disease, a blood pressure holter is attached to the patient. Blood pressure holter devices used in the health sector are bulky and uncomfortable. Patients therefore complain about the measuring system. Blood pressure holters that are used as standard take a measurement every 20-60 minutes. Specialist physicians cannot access information between two blood pressure measurements. In the study, a blood pressure measuring device that does not obstruct the noninvasive vascular access was designed. The device records Electrocardiography (ECG) and Photoplethysmography (PPG) signals it receives from the body. The recorded data was transferred to the computer environment and passed through filter, base correction and segmentation processes. The time, frequency and chaotic features extracted from the signals were extracted and blood pressure estimates were made in the artificial neural network architecture. Estimation values of 0.0224 ± (2.211) for systolic blood pressure (Mean ± Standard Deviation) and 0.0417 ± (1.2193) for diastolic blood pressure were reached. The standard for blood measuring devices, has reached The British Hypertension Society (BHS), the American National Standard ANSI / AAMI SP10: 2002 measurement limits. The designed blood pressure holter will be suitable for ambulatory and will provide clinical suitability. It will be included in standard measurement systems to be used in the health sector.