Extending the lifetime of fuel cell based hybrid systems
Proceedings of the 43rd annual Design Automation Conference
A fuel-cell-battery hybrid for portable embedded systems
ACM Transactions on Design Automation of Electronic Systems (TODAES)
Control of fuel cell/battery/supercapacitor hybrid source for vehicle applications
ICIT '09 Proceedings of the 2009 IEEE International Conference on Industrial Technology
ISSST '09 Proceedings of the 2009 IEEE International Symposium on Sustainable Systems and Technology
A dynamic frequency scaling solution to DPM in embedded linux systems
IRI'09 Proceedings of the 10th IEEE international conference on Information Reuse & Integration
Maximizing the lifetime of embedded systems powered by fuel cell-battery hybrids
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Analysis of energy reduction on dynamic voltage scaling-enabled systems
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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With the miniaturization of electronic devices, small size but high capacity power supply system appears to be more and more important. A hybrid power source, which consists of a fuel cell (FC) and a rechargeable battery, has the advantages of long lifetime and good load following capabilities. In this paper, we propose the schematic of a hybrid power supply system, that can be integrated on a chip compatible with present CMOS process. Besides, considering the problem of maximizing the on-chip fuel cell's lifetime, we propose a modified dynamic power management (DPM) algorithm for on-chip fuel cell based hybrid power system in wireless sensor node design. Taking the wireless sensor node powered by this hybrid power system as an example, we analyze the improvement of the FC-Bat hybrid power system. The simulation results demonstrate that the on-chip FC-Bat hybrid power system can be used for wireless sensor node under different usage scenarios. Meanwhile, for an on-chip power system with 1cm2 area consumption, the wafer-level battery can power a typical sensor node for only about 5 months, while our on-chip hybrid power system will supply the same sensor node for 2 years steadily.