Journal ArticleDOI
Self-powered signal processing using vibration-based power generation
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TLDR
In this paper, the authors demonstrate the feasibility of operating a digital system from power generated by vibrations in its environment, using a moving coil electromagnetic transducer as a power generator.Abstract:
Low power design trends raise the possibility of using ambient energy to power future digital systems. A chip has been designed and tested to demonstrate the feasibility of operating a digital system from power generated by vibrations in its environment. A moving coil electromagnetic transducer was used as a power generator. Calculations show that power on the order of 400 /spl mu/W can be generated. The test chip integrates an ultra-low power controller to regulate the generator voltage using delay feedback techniques, and a low power subband filter DSP load circuit. Tests verify 500 kHz self-powered operation of the subband filter, a level of performance suitable for sensor applications. The entire system, including the DSP load, consumes 18 /spl mu/W of power. The chip is implemented in a standard 0.8 /spl mu/m CMOS process. A single generator excitation produced 23 ms of valid DSP operation at a 500 kHz clock frequency, corresponding to 11,700 cycles.read more
Citations
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Journal ArticleDOI
Energy harvesting vibration sources for microsystems applications
TL;DR: A comprehensive review of existing piezoelectric generators is presented in this paper, including impact coupled, resonant and human-based devices, including large scale discrete devices and wafer-scale integrated versions.
Journal ArticleDOI
A study of low level vibrations as a power source for wireless sensor nodes
TL;DR: The goal of this paper is not to suggest that the conversion of vibrations is the best or most versatile method to scavenge ambient power, but to study its potential as a viable power source for applications where vibrations are present.
Journal ArticleDOI
A piezoelectric vibration based generator for wireless electronics
Shad Roundy,Paul K. Wright +1 more
TL;DR: In this paper, a vibration-based piezoelectric generator has been developed as an enabling technology for wireless sensor networks, where the authors discuss the modeling, design, and optimization of the generator based on a two-layer bending element.
Journal ArticleDOI
Energy Harvesting From Human and Machine Motion for Wireless Electronic Devices
TL;DR: The principles and state-of-art in motion-driven miniature energy harvesters are reviewed and trends, suitable applications, and possible future developments are discussed.
A Review of Power Harvesting from Vibration using
TL;DR: In this article, the authors discuss the research that has been performed in the area of power harvesting and the future goals that must be achieved for power harvesting systems to find their way into everyday use.
References
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CB Williams,R.B. Yates +1 more
TL;DR: In this article, the authors proposed a microgenerator that generates electricity from mechanical energy when embedded in a vibrating medium, and the power produced is proportional to the cube of the frequency of vibration, and that the mass deflection should be as large as possible.
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TL;DR: In this paper, the authors present a review of semiconductor devices and their properties, including gate and base drives, and power transistors, as well as feedback control design and an overview of ancillary issues.
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Journal ArticleDOI
Human-powered wearable computing
TL;DR: This paper explores the possibility of harnessing the energy expended during the user's everyday actions to generate power for his or her computer, thus eliminating the impediment of batteries.
Journal ArticleDOI
High-speed CMOS circuit technique
Jiren Yuan,Christer Svensson +1 more
TL;DR: It is shown that clock frequencies in excess of 200 MHz are feasible in a 3- mu m CMOS process, and a precharge technique with a true single-phase clock, which increases the clock frequency and reduces the skew problems, is used.