You have undoubtedly seen the easy-to-use blood-oxygen saturation (SpO 2) sensor that ... 3). 3. Block diagram of the entirely wireless O 2-monitoring system: (a) The external transceiver is ...

Figure 2. Wearable piezoelectric blood pressure sensor (WPBPS) mounted on a watch (a) Schematic design of the WPBPS-embedded wristwatch. (b) Block diagram of the wireless communication circuit ...