Journal ArticleDOI
Voltage Sensing Using an Asynchronous Charge-to-Digital Converter for Energy-Autonomous Environments
Reads0
Chats0
TLDR
This paper describes an autonomous reference-free voltage sensor designed using an asynchronous counter powered by the charge on a capacitor and a small controller and the voltage information is directly generated as a digital code.Abstract:
In future systems with relatively unreliable and unpredictable energy sources such as harvesters, the system power supply may become non-deterministic. For energy effective operations, Vdd is an important parameter in any meaningful system control mechanism. Reliable and accurate on-chip voltage sensors are therefore indispensible for the power and computation management of such systems. Existing voltage sensing methods are not suitable because they usually require a stable and known reference (voltage, current, time, frequency, etc.), which is difficult to obtain in this environment. This paper describes an autonomous reference-free voltage sensor designed using an asynchronous counter powered by the charge on a capacitor and a small controller. Unlike existing methods, the voltage information is directly generated as a digital code. The sensor, fabricated in the 180 nm technology node, was tested successfully through performing measurements over the voltage range from 1.8 V down to 0.8 V.read more
Citations
More filters
Journal ArticleDOI
Real-Power Computing
TL;DR: It is shown how computation systems must be designed with power-proportionality to achieve sustained computation and survivability when operating at extreme power conditions.
Book ChapterDOI
Green Experiments with FPGA
A. Drozd,Julia Drozd,Svetlana Antoshchuk,Viktor Antonyuk,Konstantin Zashcholkin,Miroslav Drozd,Oleh Titomir +6 more
TL;DR: The opportunity of the modern CAD and feature of FPGA for development of the power-efficient digital components of computer systems are examined experimentally and the program model developed for an assessment of glitches in the iterative array multiplier shows repeated exceeding of number of parasitic transitions in comparison with the number of functional ones.
Proceedings ArticleDOI
Studying the Interplay of Concurrency, Performance, Energy and Reliability with ArchOn -- An Architecture-Open Resource-Driven Cross-Layer Modelling Framework
TL;DR: This work explores the practical problems encountered in studying the interplay of all three factors together in a many-core, multi-layer design setting and introduces the modelling framework ArchOn, which is based on a novel resource-driven graph representation.
Journal ArticleDOI
All Digital Energy Sensing for Minimum Energy Tracking
TL;DR: This brief presents a digital energy sensing method that requires neither a constant voltage reference nor a time reference, and energy savings up to 1275% over existing minimum energy tracking techniques in the literature is achieved.
Proceedings ArticleDOI
A fixed window Level Crossing ADC with activity dependent power dissipation
TL;DR: A 10 bit fixed window asynchronous Level Crossing ADC that exhibits a power consumption profile proportional to its input signal's rate of change, designed and simulated in a 0.35μm technology process.
References
More filters
Journal ArticleDOI
Self-powered signal processing using vibration-based power generation
TL;DR: 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.
Book
Energy Scavenging for Wireless Sensor Networks: with Special Focus on Vibrations
TL;DR: In this paper, the authors present an analytical model of a piezoelectric generator with an inplane gap closing converter for V2E power conversion, which is based on the basic dynamic model of the generator's bimorph mounted as a cantilever.
Journal ArticleDOI
A 180-mV subthreshold FFT processor using a minimum energy design methodology
TL;DR: New subthreshold logic and memory design methodologies are developed and demonstrated on a fast Fourier transform (FFT) processor that is designed to investigate the estimated minimum energy point.
Journal ArticleDOI
A 10-bit 100-MS/s Reference-Free SAR ADC in 90 nm CMOS
TL;DR: The scheme achieves high-speed and low-power operation thanks to the reference-free technique that avoids the static power dissipation of an on-chip reference generator and the use of a common-mode based charge recovery switching method reduces the switching energy and improves the conversion linearity.
Journal ArticleDOI
Remotely powered addressable UHF RFID integrated system
TL;DR: This paper presents a fully integrated remotely powered and addressable radio frequency identification (RFID) transponder working at 2.45 GHz with state-of-the-art rectifier design achieving 37% of global efficiency.