Abstract
The interest of physiological data sensing and recording using wireless body sensor network has increased in recent years due to the advancement of miniature and portable electronic devices. In this study, the design of a portable and rechargeable data logger with high data rate multiple wireless connectivity (Bluetooth and 2.4-GHz radio frequency) is discussed. The data are logged in micro secure digital (SD) cards and can be transferred to PC or Smartphone using SD card reader, USB interface, or Bluetooth wireless link. Analog signals can also be logged through an 8-channel analog-to-digital interface. A graphical LCD with touch screen is added for control and diagnosis. The hardware is generic and targeted for various medical imaging and data collection applications. The functionality of the prototype is later tested for wireless capsule endoscopy and skin temperature logging application.
Highlights
Recent advances in miniature and portable bio-sensors, embedded processors, and wireless technologies have caused a rapid growth in sensing and recording physiological signals for medical applications
We propose to have multiple wired and wireless output connectivity such as, USB interface, micro secure digital (SD), and Bluetooth
Experimental results simulating capsule endoscopy scenario An MCU-based capsule emulator hardware as shown in Figure 14 is developed for testing the data logger prototype
Summary
Recent advances in miniature and portable bio-sensors, embedded processors, and wireless technologies have caused a rapid growth in sensing and recording physiological signals for medical applications. Bio-sensors convert body signals such as temperature, blood pressure, breathing [1], heartbeat [2,3,4], etc., to electrical signals to be processed, transmitted, and recorded in electronic devices [5]. Data coming from implanted or external body sensors can be transmitted wirelessly to a portable and wearable data logger unit, giving the patient the freedom to do household works during continuous data recording without the hassle of cumbersome wired devices. A portable, battery-operated data logger unit having wireless connectivity with the bio-sensor is discussed. The prototype is demonstrated for video wireless capsule endoscopy (WCE) [6] and skin temperature logging application
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