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Sensors 2011, 11(7), 7022-7036; doi:10.3390/s110707022
Article

An Asynchronous Multi-Sensor Micro Control Unit for Wireless Body Sensor Networks (WBSNs)

1
, 1
, 2
 and 1,*
Received: 12 May 2011; in revised form: 30 June 2011 / Accepted: 5 July 2011 / Published: 6 July 2011
(This article belongs to the Special Issue Bioinspired Sensor Systems)
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Abstract: In this work, an asynchronous multi-sensor micro control unit (MCU) core is proposed for wireless body sensor networks (WBSNs). It consists of asynchronous interfaces, a power management unit, a multi-sensor controller, a data encoder (DE), and an error correct coder (ECC). To improve the system performance and expansion abilities, the asynchronous interface is created for handshaking different clock domains between ADC and RF with MCU. To increase the use time of the WBSN system, a power management technique is developed for reducing power consumption. In addition, the multi-sensor controller is designed for detecting various biomedical signals. To prevent loss error from wireless transmission, use of an error correct coding technique is important in biomedical applications. The data encoder is added for lossless compression of various biomedical signals with a compression ratio of almost three. This design is successfully tested on a FPGA board. The VLSI architecture of this work contains 2.68-K gate counts and consumes power 496-μW at 133-MHz processing rate by using TSMC 0.13-μm CMOS process. Compared with the previous techniques, this work offers higher performance, more functions, and lower hardware cost than other micro controller designs.
Keywords: asynchronous; micro control unit; multi-sensor; wireless body sensor network asynchronous; micro control unit; multi-sensor; wireless body sensor network
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Chen, C.-A.; Chen, S.-L.; Huang, H.-Y.; Luo, C.-H. An Asynchronous Multi-Sensor Micro Control Unit for Wireless Body Sensor Networks (WBSNs). Sensors 2011, 11, 7022-7036.

AMA Style

Chen C-A, Chen S-L, Huang H-Y, Luo C-H. An Asynchronous Multi-Sensor Micro Control Unit for Wireless Body Sensor Networks (WBSNs). Sensors. 2011; 11(7):7022-7036.

Chicago/Turabian Style

Chen, Chiung-An; Chen, Shih-Lun; Huang, Hong-Yi; Luo, Ching-Hsing. 2011. "An Asynchronous Multi-Sensor Micro Control Unit for Wireless Body Sensor Networks (WBSNs)." Sensors 11, no. 7: 7022-7036.



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