scholarly journals A Biological Retina Inspired Tone Mapping Processor for High-Speed and Energy-Efficient Image Enhancement

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5600
Author(s):  
Xiaoqiang Xiang ◽  
Lili Liu ◽  
Luying Que ◽  
Conghan Jia ◽  
Bo Yan ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Image Enhancement ◽  
High Throughput ◽  
Energy Efficient ◽  
High Speed ◽  
High Energy ◽  
Tone Mapping ◽  
Data Partition ◽  
Convolution Filter ◽  
Feature Sharing

In this work, a biological retina inspired tone mapping processor for high-speed and energy-efficient image enhancement has been proposed. To achieve high throughput and high energy efficiency, several hardware design techniques have been proposed, including data partition based parallel processing with S-shape sliding, adjacent frame feature sharing, multi-layer convolution pipelining, and convolution filter compression with zero skipping convolution. Implemented on a Xilinx’s Virtex7 FPGA, the proposed design achieves a high throughput of 189 frames per second for 1024 × 768 RGB images while consuming 819 mW. Compared with several state-of-the-art tone mapping processors, the proposed design shows higher throughput and energy efficiency. It is suitable for high-speed and energy-constrained image enhancement applications.

A Review of Switched Inertance Hydraulic Converter Technology1

2020 ◽  
Vol 142 (5) ◽  
Author(s):  
Chenggang Yuan ◽  
Min Pan ◽  
Andrew Plummer
Keyword(s):  
Energy Efficient ◽  
High Speed ◽  
Control Strategies ◽  
New Technology ◽  
High Energy ◽  
Hydraulic Power ◽  
Controlled Systems ◽  
Hydraulic Machines ◽  
And Control ◽  
High Speed Switching

Abstract Digital hydraulics is a new technology providing an alternative to conventional proportional or servovalve-controlled systems in the area of fluid power. Digital hydraulic applications, such as digital pumps, digital valves and actuators, switched inertance hydraulic converters (SIHCs), and digital hydraulic power management systems, promise high-energy efficiency and less contamination sensitivity. Research on digital hydraulics is driven by the need for highly energy efficient hydraulic machines but is relatively immature compared to other energy-saving technologies. This review introduces the development of SIHCs particularly focusing on the work being undertaken in the last 15 years and evaluates the device configurations, performance, and control strategies that are found in the current SIHC research. Various designs for high-speed switching valves are presented, and their advantages and limitations are compared and discussed. The current limitations of SIHCs are discussed and suggestions for the future development of SIHCs are made.

scholarly journals Review of the existing energy labelling systems and a proposal for rail vehicles

2020 ◽  
pp. 095440972092636
Author(s):  
Zhendong Liu ◽  
Mats Berg ◽  
Tohmmy Bustad
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
High Energy ◽  
Rail Transport ◽  
Transport Sector ◽  
Rail Vehicles ◽  
Low Emission ◽  
Energy Labelling ◽  
Efficiency Indicators ◽  
Labelling System

Improving energy efficiency and reducing CO2 emissions are becoming very essential worldwide. To encourage the development and application of energy-efficient and low-emission technologies and to increase people's awareness of energy-saving, many energy labelling systems are developed and utilized in most countries. Since energy labelling systems have a significant impact, more and more sectors are developing their energy labelling systems to have their products included. Globally, the transport sector consumes a great proportion of energy and is responsible for considerable CO2 emissions. Although rail vehicles have relatively high energy efficiency, a labelling system has not been developed in the railway sector, whereas other modes of transport have developed energy efficiency indicators or energy labelling systems. Therefore, it is necessary to develop an energy labelling system for rail vehicles to promote rail transport and develop the technology of rail vehicles. First, this paper gives a review of the existing energy labelling systems. Second, it summarizes the rail needs and rail stakeholders’ interests regarding energy efficiency and corresponding labelling. Last but not least, a proposal for an energy labelling system for rail vehicles is given.

RE-STORM: REAL-TIME ENERGY EFFICIENT DATA ANALYSIS ADAPTING STORM PLATFORM

2016 ◽  
Vol 78 (10) ◽  
Author(s):  
Rizwan Patan ◽  
Rajasekhara Babu M.
Keyword(s):  
Energy Efficiency ◽  
Big Data ◽  
Response Time ◽  
Energy Efficient ◽  
Data Stream ◽  
High Performance ◽  
High Energy ◽  
Streaming Data ◽  
Stream Computing ◽  
High Energy Efficiency

It is necessary to model an energy efficient and stream optimization towards achieve high energy efficiency for Streaming data without degrading response time in big data stream computing. This paper proposes an Energy Efficient Traffic aware resource scheduling and Re-Streaming Stream Structure to replace a default scheduling strategy of storm is entitled as re-storm. The model described in three parts; First, a mathematical relation among energy consumption, low response time and high traffic streams. Second, various approaches provided for reducing an energy without affecting response time and which provides high performance in overall stream computing in big data. Third, re-storm deployed energy efficient traffic aware scheduling on the storm platform. It allocates worker nodes online by using hot-swapping technique with task utilizing by energy consolidation through graph partitioning. Moreover, re-storm is achieved high energy efficiency, low response time in all types of data arriving speeds.it is suitable for allocation of worker nodes in a storm topology. Experiment results have been demonstrated the comparing existing strategies which are dealing with energy issues without affecting or reducing response time for a different data stream speed levels. Finally, it shows that the re-storm platform achieved high energy efficiency and low response time when compared to all existing approaches.

DSF studies towards energy efficiency for a tall building design in the Mediterranean climate

2020 ◽  
pp. 165-179
Author(s):  
T Saroglou ◽  
T Theodosiou ◽  
I. A. Meir
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Energy Efficient ◽  
Mediterranean Climate ◽  
Tall Buildings ◽  
Building Design ◽  
High Energy ◽  
Tall Building ◽  
Energy Demands ◽  
The Mediterranean

Tall buildings around the world are increasing at an accelerating pace. However, this fast-pace development is not in tandem with today’s environmental considerations towards reducing high carbon emissions, mainly relating to the building sector (close to 50% of carbon dioxide (CO2) emissions). The vast scale and energy demands of tall buildings call for an in-depth study of this building typology towards improving energy efficiency. An important consideration for lowering energy demands is the configuration of the building envelope that acts as the mediator between indoor and outdoor conditions, according to the climate and microclimate of the building’s location. Current architectural practices of fully glazed curtain wall envelopes make this relationship problematic, by resulting in high-energy loads for achieving thermal comfort. Over the last few years, a step forward towards energy efficiency is the use of a double-skin façade (DSF). Its application, however, is lacking consideration of the specific climatic conditions that will essentially result in an energy efficient design. Previous research revealed that the most energy efficient DSF in the Mediterranean climate is with LowE glazing as the outside DSF layer. Further studies on DSF cavity width for a hot climate, were in favour of wider cavities, as these reduce the high cooling loads that are associated with this climate. Additionally, simulations of an office building in the Mediterranean climate, confirmed that cooling energy is also present during winter (airtight DSF), suggesting for a more active DSF envelope design throughout the year. A further study is then conducted through simulations, where the DSF design alternates between an open / closed DSF, and comparisons are made in relation to DSF width, building height above ground, outdoor environmental conditions and interior thermal comfort, for further improving the energy efficiency of tall building design.

scholarly journals Comparative analysis of radon concentrations in buildings of different energy efficiency classes on example of five Russian cities

2020 ◽  
Vol 13 (2) ◽  
pp. 47-56
Author(s):  
I. V. Yarmoshenko ◽  
A. D. Onishchenko ◽  
G. P. Malinovsky ◽  
A. V. Vasilyev ◽  
E. I. Nazarov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Radon Concentration ◽  
Energy Efficient ◽  
Residential Buildings ◽  
High Energy ◽  
Building Envelope ◽  
Soviet Period ◽  
Energy Efficient Buildings ◽  
Radon Concentrations

A comparative analysis of the radon concentrations in modern multi-storey residential buildings of high energy efficiency class and buildings typical for urban areas of the twentieth century was carried out. The study was conducted in Russian cities located in various climatic zones – Ekaterinburg, Krasnodar, St. Petersburg, Salekhard, Chelyabinsk. The radon concentration in samples of buildings was measured using integrated radon radiometers based on nuclear track detectors according to a single method. The surveyed sample included 498 apartments in multi-apartment buildings. Among all the examined building types, the highest average radon concentration is observed in modern energy-efficient houses – 43 Bq/m3. In other types of buildings, the following average radon concentrations were obtained: brick 2–5 floors – 35 Bq/m3; panel 5 floors – 32 Bq/m3; panel 7–12 floors 1970-1990 years of construction – 22 Bq/m3; brick> 5 floors 1970–1980 years of construction – 20 Bq m3; panel, built since 1990 – 24 Bq/m3. The results of the study confirm the assumption that radon concentration in modern multi-storey energy-efficient houses is on average higher than in typical residential buildings of the Soviet period. The increased accumulation of radon in energy-efficient buildings is associated with a decrease in the building envelope permeability and the contribution of fresh air to the general air exchange. Despite the fact that there were no cases of exceeding hygienic standards for the indoor radon concentration in the framework of this study, the higher radon concentration in buildings of increased energy efficiency requires attention from the point of view of implementing the principle of optimization of radiation protection. In the future, extensive construction of energy-efficient buildings may increase the average and collective doses to the urban population in the Russian Federation.

scholarly journals THE MAIN DIRECTIONS OF IMPROVING ENERGY EFFICIENCY IN THE TRANSPORT SECTOR

2019 ◽  
pp. 362-367
Author(s):  
E.E. Karsibaev ◽  
S.S. Duyshebaev ◽  
A.Zh. Abzhapbarova
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
State Level ◽  
Development Trend ◽  
High Energy ◽  
Green Economy ◽  
Transport Sector ◽  
Energy Efficiency Policy ◽  
Modern Level ◽  
The Republic

The article deals with the actual problems of providing the economy with energy-efficient vehicles. The global development trend of the transport sector is its environmental and energyefficient orientation. In Kazakhstan, at the state level, legislative measures and concepts for the introduction and development of the "green" economy are being taken. The article analyzes the causes of high energy consumption in transport, the main directions of implementation of energy efficiency policy in transport. On the example of the largest metropolis of Kazakhstan – Almaty, the main measures to ensure sustainable development of transport, reducing emissions of pollutants into the atmosphere are presented. Also, the international experience in reducing air pollution by exhaust gases is considered, recommendations for its use are given. Energy-efficient focus of the transport sector will ensure the transition of the cities of Kazakhstan to the modern level of development and sustainability, in accordance with the best international practices and strategic documents of the Republic of Kazakhstan.

scholarly journals ENERGY EFFICIENT DRYING OF SEEDS OF CEREAL CROPS

2020 ◽  
pp. 64-70
Author(s):  
Vadym Paziuk
Keyword(s):  
Energy Efficiency ◽  
Low Temperatures ◽  
Energy Efficient ◽  
High Energy ◽  
Biochemical Properties ◽  
Drying Process ◽  
Seed Material ◽  
Technical Solutions ◽  
Low Temperature Drying

Many researchers at different times have been engaged in drying cereals to preserve their nutritional properties, which is associated with the biochemical properties of materials. The technologies for drying grain crops have been developed and improved with the given recommendations aimed at carrying out the drying process at high temperatures (above 100 ° C). But the increased requirements for seed grains and the associated high energy costs do not allow the drying process to be carried out efficiently, since with large grain volumes this leads to a significant increase in material costs. The study of the laws of drying of seeds of cereals in view of improving the energy efficiency of the process is relevant. Energy efficiency is one of the main parameters influencing the choice of drying mode. In traditional technologies for drying seed material, it is dried at low temperatures, which does not allow to significantly intensify the process by increasing the temperature of the coolant, as this significantly reduces the quality of the material. The state of the art makes it possible to more accurately investigate and analyze the drying processes of cereal seeds with automatic processing and plotting of drying kinetics. The results of previous researchers were conducted on existing grain dryers, in which it is difficult to evaluate and give the correct recommendations for drying the seed material. This is due to the peculiarities of the drying process and the design of the grain dryer. To adequately assess the drying regimes, studies of drying seeds of cereals at low temperatures were carried out to preserve the seed properties of the material. To increase the energy efficiency of the drying process, a step-by-step descending low-temperature drying mode is proposed, which provides the required quality of seed material. All the proposed technical solutions for the introduction of energy-efficient regimes in the process of drying grain seeds were implemented in the recommendations for industrial drying in mine direct-flow grain dryers.

scholarly journals Performance evaluation of an efficient five input majority gate design in QCA nanotechnology

2019 ◽  
Vol 8 (3) ◽  
pp. 194
Author(s):  
Amanpreet Sandhu ◽  
Sheifali Gupta
Keyword(s):  
Energy Efficiency ◽  
Performance Evaluation ◽  
Power Dissipation ◽  
Energy Efficient ◽  
High Speed ◽  
Clock Cycle ◽  
Full Adder ◽  
Majority Gate ◽  
Quantum Dot Cellular Automata ◽  
Gate Count

Quantum-dot-cellular-automata (QCA) is the imminent transistor less technology, considered at nano level with high speed of operation and lower power dissipation features. The present paper proposes a novel and an efficient 5-input coplanar majority gate (PMG) with improved structural and energy efficiency. The proposed gate consumes an occupational area of 0.01μm2 with 17 QCA cells which is 50% less in comparison to the best designs reported in literature. The proposed structure is also more energy efficient because it dissipates 21.1% less energy than the best reported designs. The correctness of a proposed majority gate is verified by designing a single bit full adder. The new 1-bit full adder design is structural efficient and robust in terms of gate count and clock delay. It consumes occupational area of 0.05μm2 with 58 QCA cells showing 16.6% improvement in structural efficiency as compared to the best design reported in. It is having a gate count of 4 with the delay of 1 clock cycle. Here, the QCADesigner and QCAPro tools are utilized for the simulation and energy dissipation analysis of proposed majority gate and full adder design.

Design Optimization of Energy Efficient Office Buildings in Tunisia

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Pyeongchan Ihm ◽  
Moncef Krarti
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
High Performance ◽  
Energy Use ◽  
Cost Effective ◽  
Energy Performance ◽  
High Energy ◽  
Office Buildings ◽  
Optimization Approach ◽  
Heating And Cooling

Optimal and cost-effective energy efficiency design and operation options are evaluated for office buildings in Tunisia. In the analysis, several design and operation features are considered including orientation, window location and size, high performance glazing types, wall and roof insulation levels, energy efficient lighting systems, daylighting controls, temperature settings, and energy efficient heating and cooling systems. First, the results of the optimization results from a sequential search technique are compared against those obtained by a more time consuming brute-force optimization approach. Then, the optimal design features for a prototypical office building are determined for selected locations in Tunisia. The optimization results indicate that utilizing daylighting controls, energy efficient lighting fixtures, and low-e double glazing, and roof insulation are required energy efficiency measures to design high energy performance office buildings throughout climatic zones in Tunisia. In particular, it is found that implementing these measures can cost-effectively reduce the annual energy use by 50% compared to the current design practices of office buildings in Tunisia.

Developing a Control Strategy for Booster Stations under Uncertain Load

2015 ◽  
Vol 807 ◽  
pp. 241-246 ◽  
Author(s):  
Philipp Pöttgen ◽  
Thorsten Ederer ◽  
Lena C. Altherr ◽  
Peter F. Pelz
Keyword(s):  
Energy Efficiency ◽  
Control Strategy ◽  
Energy Efficient ◽  
High Energy ◽  
Simple Approach ◽  
Volume Flow ◽  
Current Volume ◽  
Flow Through ◽  
High Energy Efficiency ◽  
System Properties

Booster stations can fulfill a varying pressure demand with high energy-efficiency, because individual pumps can be deactivated at smaller loads. Although this is a seemingly simple approach, it is not easy to decide precisely when to activate or deactivate pumps. Contemporary activation controls derive the switching points from the current volume flow through the system. However, it is not measured directly for various reasons. Instead, the controller estimates the flow based on other system properties. This causes further uncertainty for the switching decision. In this paper, we present a method to find a robust, yet energy-efficient activation strategy.

Sign in / Sign up

Export Citation Format

Share Document