Low Power Consumption Technology Research Articles

Energy consumption structure model considering urban green and low-carbon transportation

<p class="Abstract">The importance of energy conservation and emission reduction has become the consensus of the international community, and Iraq is also actively improving the urban public transportation system to control carbon emissions. This paper collects panel data of Tikrit city in Iraq in the past 3 years, constructs a random effect variable coefficient model, and studies the impact of the development of urban low-carbon transportation system on the energy consumption structure. The study finds that the government can use public transportation pricing strategies to influence consumers. In order to realize the optimization of energy consumption structure, the impact of electric vehicles on energy consumption structure will decrease with the increase of urban development. The transportation sector can increase the purchase and travel costs of traditional cars by restricting travel, purchases, and charging parking fees, which affects the number of private cars and reduces the obstacles to optimizing the energy consumption structure. The government should increase financial subsidies, improve rail transit and reasonable bus (electric) vehicle operation systems, increase investment in new energy vehicle research and development, and encourage high energy density and low power consumption technologies. development, increase residents’ demand for new energy passenger vehicles, and optimize the energy consumption structure.</p>

Systematic Literature Review: LoRa and LoraWAN projects in practice

The first technology to communicate with the Wireless Sensor Network (WSN), but this technology can only perform close-range sensing and processing, in contrast to the Internet of Things (IoT) which can communicate long distances based on the Internet, while the commonly introduced assistive technology is Low-Power-Wide-Area-Network (LPWAN) which is a low power consumption technology but long range. One technology that is widely used is LoRa and its open access utilises LoRaWAN, because it has many advantages. There has been a lot of research on LoRa, LoRaWAN and surveys or reviews, but not many have focused on reviews for application rather than just testing. In this research, the author wants to conduct a review of the application of LoRa and LoRaWAN by utilising Systematic Literature Review (SLR), with the initial phase search getting 1314 and the final result is getting 45 studies taken from IEEE Explorer, ACM and Indonesian language papers (Google Scholar). Then the researcher presents a discussion related to the application of LoRa and LoRaWAN in several fields such as health, agriculture, etc.

Research and Demonstration of Intelligent Multi-Physical Quantity Integration Sensor for Transmission Lines

The digital grid requires sensors to be widely deployed, safe, and reliable. At present, the single functional sensors suffered from redundant sensing system, repeated construction and low utilization rate. Therefore, this paper researched the multi-physical quantity integration sensor for a quad-bundle spacer on 500kV transmission lines. The sensor was composed of self-supplying rings and the monitoring host. Based on the non-contact current measurement technology, energy supply technology, intelligent sensing technology, low power consumption technology, reliability design technology, and other advanced technologies, this paper designed the hardware, software, and protective structure of the sensor, which can monitor the current and temperature of bubbles, channel side image and infrared image on transmission lines, ambient temperature, humidity, and air pressure. Finally, the multi-physical quantity integration sensors have been used on transmission lines in China Southern Power Grid, and the functions were verified. The sensors promote the automation, information, and digitization of monitoring transmission lines.

An efficient networking solution for extending and controlling wireless sensor networks using low-energy technologies.

Wireless sensor networks connect a set of highly flexible wireless devices with small weight and size. They are used to monitor and control the environment by organizing the acquired data at a central device. Constructing fully connected networks using low power consumption sensors, devices, and protocols is one of the main challenges facing wireless sensor networks, especially in places where it is difficult to establish wireless networks in a normal way, such as military areas, archaeological sites, agricultural districts, construction sites, and so on. This paper proposes an approach for constructing and extending Bi-Directional mesh networks using low power consumption technologies inside various indoors and outdoors architectures called “an adaptable Spider-Mesh topology”. The use of ESP-NOW protocol as a communication technology added an advantage of longer communication distance versus a slight increase of consumed power. It provides 15 times longer distance compared to BLE protocol while consuming only twice as much power. Therefore, according to our theoretical and experimental comparisons, the proposed approach could provide higher network coverage while maintaining an acceptable level of power consumption.

Computational study of spin caloritronics in a pristine and defective antimonene nanoribbon

In this paper, by using first-principle density functional theory (DFT) combined with non-equilibrium Green's function (NEGF), thermally induced spin current in zigzag and armchair Antimonene Nanoribbon (SbNR) is investigated. Also, we obtain higher spin current in Armchair nanoribbon (ANR) than zigzag nanoribbon (ZNR), because the start energy of transmission for ANR is closer to the Fermi level than ZNR. The results show that the device has a perfect spin Seebeck effect under temperature difference without gate voltage or bias voltage. For the ANR configuration, the competition between spin up holes and spin down electrons leads to negative differential behavior of charge current, which is essential for the design of thermal transistors. We also investigate the effect of a single vacancy and double vacancy on the structural and electronic properties of ZNR and ANR. The results show that vacancy in ZNR leads to a decrease in spin currents, whereas in ANR, spin currents increase. Double vacancy in ANR can significantly enhance spin up current up to about 2.5 times the pristine one. The results verify the Armchair Nanoribbon as a promising candidate for spin caloritronics devices, which can be used in future low power consumption technology.

Sensitivity analysis and parameter optimization of energy consumption for underwater gliders

Most underwater gliders (UGs) operate on battery power, making energy a decisive factor for their duration and gliding range. Therefore, low power consumption technology is of great significance for enhancing the performance of UGs. In this paper, an accurate energy consumption model (ECM) and a gliding range model (GRM) of UGs are established. A field trial was conducted in the South China Sea to verify the accuracy of the ECM. To quantify the impact of different parameters on the ECM and GRM, the first-order and total sensitivity indexes of fourteen parameters are calculated through the Sobol sensitivity analysis method. The results indicate that gliding angle is the most influencing parameter on ECM, followed by velocity, diving depth, and drag coefficient KD0. For the GRM, the order is diving depth, velocity, KD0 and gliding angle. Based on a prototype UG, several simulations are performed to determine the optimal parameters leading to the maximum profile number and gliding range. The results demonstrate that with the same average diving depth of 1000 m, the optimal gliding range can increase by 11.97% compared with the gliding range in the actual sea trial.

34.3: Invited Paper: Printing Pixel Circuits on Light Emitting Diode Array for AMLED Displays

An active matrix light emitting display module integrated with carbon nanotubes control circuits was fully printed. The high performance of super pure single‐chirality carbon nanotube TFT provides super bright and low power consumption technologies for indoor and outdoor augmented reality that are highly desirable for civil and military display applications.

Low Power Consumption Technologies for Space-Division Multiplexing Optical Amplification and Switching Nodes

Low Power Consumption Technologies for Space-Division Multiplexing Optical Amplification and Switching Nodes

Research on Low Power Consumption Technology of Zigbee Network

Research Zigbee low-power energy-saving technology is particularly important. Zigbee network itself has the characteristics of low power consumption, the paper in-depth study of CC2530 chip low-power technology based on the proposed new energy-saving mechanism, improve the node life effect is obvious.

Thermally induced spin-dependent current based on Zigzag Germanene Nanoribbons

In this paper, using first principle calculation and non-equilibrium Green's function, the thermally induced spin current in Hydrogen terminated Zigzag-edge Germanene Nanoribbon (ZGeNR-H) is investigated. In this model, because of the difference between the source and the drain temperature of ZGeNR device, the spin up and spin down currents flow in the opposite direction with two different threshold temperatures (Tth). Hence, a pure spin polarized current which belongs to spin down is obtained. It is shown that, for temperatures above the threshold temperature spin down current increases with the increasing temperature up to 75K and then decreases. But spin up current rises steadily and in the high temperature we can obtain polarized spin up current. In addition, we show an acceptable spin current around the room temperature for ZGeNR. The transmission peaks in ZGeNR which are closer to the Fermi level rather than Zigzag Graphene Nanoribbon (ZGNRS) which causes ZGeNR to have spin current at higher temperatures. Finally, it is indicated that by tuning the back gate voltage, the spin current can be completely modulated and polarized. Simulation results verify the Zigzag Germanene Nanoribbon as a promising candidate for spin caloritronics devices, which can be applied in future low power consumption technology.

A spin-Seebeck diode with a negative differential spin-Seebeck effect in a hydrogen-terminated zigzag silicene nanoribbon heterojunction.

The spin-Seebeck effect (SSE), the central topic of spin caloritronics, provides a new direction for future low power consumption technology. To realize device applications of SSE, a spin-Seebeck diode (SSD) with a negative differential SSE is very desirable. To this end, we constructed a spin caloritronics device that was composed of a ferromagnetic double-single-hydrogen-terminated zigzag silicene nanoribbon (ZSiNR-H2-H) and an antiferromagnetic double-double-hydrogen-terminated zigzag silicene nanoribbon (ZSiNR-H2-H2). By using ab initio calculations combined with nonequilibrium Green's function technique, we found that thermally driven spin current through the heterojunction featured the SSD effect and negative differential SSE. The former originates from the asymmetrical thermal-driven conducting electrons and holes, and the latter ascribes to the thermal spin compensation effect. Their physical mechanisms are much different from the previous ones mainly relying on the spin-wave excitations in the interface between metals and magnetic insulators, supporting our study that puts forward a new route to realize the SSD with a negative differential SSE.

P‐151L: Late‐News Poster: Printing Pixel Circuits on Light Emitting Diode Array for AMLED Displays

An active matrix light emitting display module integrated with carbon nanotubes control circuits was fully printed. The high performance of super pure single‐]chirality carbon nanotube TFT provides super bright and low power consumption technologies for indoor and outdoor augmented reality that are highly desirable for civil and military display applications.

A prototype optical fibre direct current sensor for HVDC system

Direct current of the transmission line is the key parameter for the control and protection of high-voltage direct current (HVDC) transmission systems. In this paper, a novel optically powered direct current sensor for HVDC measurement is presented. The direct current is first detected via a precise direct shunt, and then converted to an optical pulse signal by an analogue voltage processing unit, which is designed using low power consumption technology. Subsequently, the optical pulse signal is transmitted to the control room via an optical fibre system and recovered by a ground-located optical pulse processing unit. Moreover, part count method and part stress analysis method are used to predict the failure rate of the power supply and conversion circuit. Tests in the China National High Voltage Metering Station and the laboratory show that the proposed sensor achieved an accuracy within to ±0.5% from 300 to 3000 A, and the power consumption of analogue voltage processing unit is less than 46 mW on the condition of maximum 8k sampling frequency.

Design of the Intrinsic Safety CO Monitor with Low Power Consumption

To monitor the concentration of CO accurately and in real-time in the environment with flammable , explosive and toxic gas, the intrinsic safety CO monitor with low power consumption was designed by using the low power consumption technology and intrinsic safety technology. The feasibility of the intrinsic safety design was verified by the electric spark discharge calculation and heating calculation. Low power experiments verified the low consumption characteristic of the CO monitor. This method can also be extended to the system to monitor other poisonous and harmful gases.

High permittivity cerium oxide thin films on AlGaN/GaN heterostructures

Cerium oxide (CeO2) thin films have been grown by metal-organic chemical vapor deposition on AlGaN/GaN heterostructures and their insulating properties as gate dielectric layer have been explored. The deposited thin films have been found to be textured on the GaN based heterostructures and exhibited a permittivity of 26. This high permittivity value and large band gap are certainly advantageous with respect to other reported materials for the metal insulator semiconductor high electron mobility transistor application. The reduced leakage current density clearly suggests that these CeO2 films are very promising as gate dielectric for AlGaN/GaN transistors low power consumption technology.

The Study on Low Power Consumption Technology of the Walls Based on Powdered Caol Ash and Karst Slab Building Material — Take for Example Karst Region in Guizhou, China

Guizhou is situated in the biggest continuous karst strap. Carbonate rock cropping-out reaches 130,000 square kilometers. It is also a province quite rich in coal resources. There have been constructed 12 thermal power plants fueled with coal. As the inevitable outcome, the discharge of coal ashes each year reaches over 1,580,000 tons. Based on this special material produced by the natural environment, this study designs a kind of powdered-coal-ash building block walls, which not only preserve heat and insulate heat, but also embody the regional features, thus making the powdered coal ash and karst rock become the real green material. With the respect to the designing method, we produce, in accordance with the (JGJ134-2001) standard , a kind of sandwich building blocks, which can retain heat and insulate heat. Then on the block outside, we hang stone slabs to make the slab and the block form a certain width ventilation space, thus a sandwiching wall of powdered coal ash and slab is constructed. By making use of heat pressure principle, heat is discharged. Through theoretical analysis, and simulations, etc., it shows that karst rock material and the powdered coal ash are green materials, which play a necessary part of regional features, heat preservation and heat insulation.

Low Power Consumption Technology for Ultra-High Resolution Mobile Display by Using RGBW System

Low Power Consumption Technology for Ultra-High Resolution Mobile Display by Using RGBW System

Telemetric system for monitoring and automation of railroad networks

This paper describes a new method of real-time train monitoring based on the ZigBee/IEEE 802.15.4 protocol. The system consists of a mobile device embedded in the moving train which transmits parameter signals that are being measured by a base unit with the help of routers. When applied, the technique monitors and controls vehicles operating on permanent routes, making a real-time evaluation of their performance and location, and allowing an effective planning of trains. It consists of a low cost, low power consumption and safe modular technology capable of monitoring many different variables simultaneously.

Numerical simulation of small silicon partially insulated MOSFETs

The scaling of conventional MOS bulk transistors with gate lengths below 100 nm seems to be difficult due to short channel effects. Especially the adjustment of the threshold voltage Vth is difficult because of the rapid drop down at shorter gate lengths. For low power consumption and high speed applications SOI technologies have been developed, but floating body effects, increasing leakage currents, kink phenomena and decreased heat dissipation occur in SOI-FETs.