Microcontroller-based wireless recorder for biomedical signals
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Journal Volume
7 VOLS
Pages
5179-5181
Date Issued
2005
Author(s)
Abstract
A portable multichannel system is described for the recording of biomedical signals wirelessly. Instead of using the conversional time-division analog-modulation method, the technique of digital multiplexing was applied to increase the number of signal channels to 4. Detailed design considerations and functional allocation of the system is discussed. The front-end unit was modularly designed to condition the input signal in an optimal manner. Then, the microcontroller handled the tasks of data conversion, wireless transmission, as well as providing the ability of simple preprocessing such as waveform averaging or rectification. The low-power nature of this microcontroller affords the benefit of battery operation and hence, patient isolation of the system. Finally, a single-chip receiver, which compatible with the RF transmitter of the microcontroller, was used to implement a compact interface with the host computer. An application of this portable recorder for low-back pain studies is shown. This device can simultaneously record one ECG and two surface EMG wirelessly, thus, is helpful in relieving patients' anxiety devising clinical measurement. Such an approach, microcontroller-based wireless measurement, could be an important trend for biomedical instrumentation and we help that this paper could be useful for other colleagues. © 2005 IEEE.
Subjects
Amplifier; EMG; Microcontroller; RF
Other Subjects
Microcontrollers; Multiplexing; Patient monitoring; Radio frequency amplifiers; Signal processing; Wireless telecommunication systems; Biomedical instrumentation; Biomedical signals; Digital multiplexing; Multichannel system; Wireless recorder; Biomedical engineering
Type
conference paper