Deadline-Aware Joint Optimization of Sleep Transistor and Supply Voltage for FinFET Based Embedded Systems

2017 ◽  
Author(s):  
Huimei Cheng ◽  
Ji Li ◽  
Jeffrey Draper ◽  
Shahin Nazarian ◽  
Yanzhi Wang
Keyword(s):  
Embedded Systems ◽  
Supply Voltage ◽  
Joint Optimization

Vulnerabilities of Secure and Reliable Low-Power Embedded Systems and Their Analysis Methods

2014 ◽  
pp. 102-122
Author(s):  
Norbert Druml ◽  
Manuel Menghin ◽  
Christian Steger ◽  
Armin Krieg ◽  
Andreas Genser ◽  
...  
Keyword(s):  
Embedded Systems ◽  
Power Consumption ◽  
Low Power ◽  
Mobile Devices ◽  
Development Process ◽  
Supply Voltage ◽  
Personal Data ◽  
Low Power Design ◽  
Fault Attacks ◽  
Wide Range

Due to the increase in popularity of mobile devices, it has become necessary to develop a low-power design methodology in order to build complex embedded systems with the ability to minimize power usage. In order to fulfill power constraints and security constraints if personal data is involved, test and verification of a design's functionality are imperative tasks during a product's development process. Currently, in the field of secure and reliable low-power embedded systems, issues such as peak power consumption, supply voltage variations, and fault attacks are the most troublesome. This chapter presents a comprehensive study over design analysis methodologies that have been presented in recent years in literature. During a long-lasting and successful cooperation between industry and academia, several of these techniques have been evaluated, and the identified sensitivities of embedded systems are presented. This includes a wide range of problem groups, from power and supply-related issues to operational faults caused by attacks as well as reliability topics.

Analysis of Characteristics of LED Lamps with T8 Bulb by Various Manufacturers

2019 ◽  
pp. 82-87
Author(s):  
Nina P. Nestyorkina ◽  
Olga Yu. Kovalenko ◽  
Yulia A. Zhuravlyova
Keyword(s):  
Supply Voltage ◽  
Luminous Flux ◽  
Supply Network ◽  
Operational Characteristics ◽  
Nominal Voltage ◽  
Electric Parameters ◽  
The Moment ◽  
Colour Rendering

The article analyses the operational characteristics of 10W LED lamps with T8 bulb manufactured by ASD (Russia), Smartbuy (Taiwan), and VOLPE (PRC) and 18W FL with T8 bulb manufactured by PHILIPS (Poland) including the dependence of these lamps on the supply voltage. The results of measurements show that: a) the period of stabilisation of electric parameters and luminous flux of LED lamps does not cause discomfort of illumination unlike the said FL, the luminous flux of which at the moment of switching on is 70 % of the nominal value, which is reached after 13 minutes; b) with nominal voltage of supply network, the value of luminous flux of 10W ASD LED-T8R-STD LED lamp (Russia) is 6 % less than the declared one, and that of Smartbuy SBL-T8-10-64K-A (Taiwan) and VOLPE LED-T8-10W/DW/G13/FR/FIX/N (PRC) is even less; c) the general colour rendering index of all studied LED lamps is less than the declared one (72 instead of 80); d) the flicker index of all studied LED lamps does not exceed the declared value of 5 %; e) the characteristics of LED lamps almost do not depend on changes of the supply voltage within the range of ±10 %. The recommendations regarding the application of the studied LED lamps are given.

Dependence of Current Harmonics of Greenhouse Irradiators on Supply Voltage

2020 ◽  
pp. 85-88 ◽  
Author(s):  
Nadezhda P. Kondratieva
Keyword(s):  
Mathematical Models ◽  
Supply Voltage ◽  
Harmonic Distortion ◽  
Feasibility Studies ◽  
Power Losses ◽  
Voltage Level ◽  
Supply Networks ◽  
Current Harmonics ◽  
Cable Lines ◽  
Harmonic Composition

The article describes the results of the study concerning the effect of the voltage level on current harmonic composition in greenhouses irradiators. It is found that its change affects the level of current harmonics of all types of the studied greenhouse irradiators. With decrease of nominal supply voltage by 10 %, the total harmonic distortion THDi decreases by 9 % for emitters equipped with high pressure sodium lamps (HPSL), by 10 % for emitters with electrode-less lamps and by 3 % for LED based emitters. With increase of nominal supply voltage by 10 %, THDi increases by 23 % for lighting devices equipped with HPSL, by 10 % for irradiators with electrode-less lamps and by 3 % for LED based emitters. Therefore, changes of supply voltage cause the least effect on the level of current harmonics of LED based emitters and then the emitters with electrode-less lamps. Change of the level of supply voltage causes the greatest effect on the level of current harmonics of HPSL based irradiators. Mathematical models of dependence of THDi on the level of supply voltage for greenhouse emitters equipped with LED, electrode-less lamps and HPSL lamps were formulated. These mathematical models may be used for calculations of total current when selecting transformers and supply cable lines for greenhouse lighting devices, for design of new or reconstruction of existing irradiation systems of greenhouse facilities, and for calculation of power losses in power supply networks of greenhouse facilities during feasibility studies for energy saving and energy efficiency increasing projects.

Development of embedded systems to control toxic compounds in textile industries

2012 ◽  
Vol 1 (5) ◽  
pp. 115-117
Author(s):  
Jahnavi KRM Jahnavi KRM ◽  
◽  
Raghavendra Rao K ◽  
Padma Suvarna R
Keyword(s):  
Embedded Systems ◽  
Toxic Compounds ◽  
Textile Industries

Proposal and Evaluation of Mutual Exclusion Method using Lock-free Algorism for Embedded Systems using Multi-core Processor

2019 ◽  
Vol 139 (7) ◽  
pp. 802-811
Author(s):  
Kenta Fujimoto ◽  
Shingo Oidate ◽  
Yuhei Yabuta ◽  
Atsuyuki Takahashi ◽  
Takuya Yamasaki ◽  
...  
Keyword(s):  
Embedded Systems ◽  
Mutual Exclusion ◽  
Exclusion Method ◽  
Multi Core Processor

Towards Okinawa-style Robot-embedded Systems

2013 ◽  
Vol 133 (2) ◽  
pp. 111-115 ◽  
Author(s):  
Takashi Anezaki ◽  
Suriyon Tansuriyavong ◽  
Chikatoshi Yamada
Keyword(s):  
Embedded Systems
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