TY - CHAP U1 - Buchbeitrag A1 - Gansloser, Jens A1 - Seepold, Ralf T1 - Development of an algorithm and a sensor to monitor the heart rate by volumetric measurement techniques T2 - Mobile Networks for Biometric Data Analysis N2 - The person’s heart rate is an important indicator of their health status. A heart rate that is too high or too low could be a sign of several different diseases, such as a heart disorder, obesity, asthma, or many others. Many devices require users to wear the device on their chest or place a finger on the device. The approach presented in this paper describes the principle and implementation of a heart rate monitoring device, which is able to detect the heart rate with high precision with the sensor integrated in a wristband. One method to measure the heart rate is the photoplethysmogram technique. This method measures the change of blood volume through the absorption or reflection of light. A light emitting diode (LED) shines through a thin amount of tissue. A photo-diode registers the intensity of light that traverses the tissue or is reflected by the tissue. Since blood changes its volume with each heartbeat, the photo-diode detects more or less light from the LED. The device is able to measure the heart rate with a high precision, it has low performance and hardware requirements, and it allows an implementation with small micro-controllers. Y1 - 2016 SN - 978-3-319-39698-9 SB - 978-3-319-39698-9 SN - 978-3-319-39700-9 SB - 978-3-319-39700-9 U6 - https://doi.org/10.1007/978-3-319-39700-9_7 DO - https://doi.org/10.1007/978-3-319-39700-9_7 VL - 2016 SP - 79 EP - 89 PB - Springer CY - Cham ER -