scholarly journals Autonomous distributed temperature sensing for long-term heated applications in remote areas

2013 ◽  
Vol 2 (1) ◽  
pp. 71-77 ◽  
Author(s):  
A.-M. Kurth ◽  
N. Dawes ◽  
J. Selker ◽  
M. Schirmer
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Surrounding Medium ◽  
Temperature Sensing ◽  
Valuable Insight ◽  
Distributed Temperature Sensing ◽  
Worst Case ◽  
Remote Areas ◽  
High Power Consumption

Abstract. Distributed temperature sensing (DTS) is a fiber-optical method enabling simultaneous temperature measurements over long distances. Electrical resistance heating of the metallic components of the fiber-optic cable provides information on the thermal characteristics of the cable's environment, providing valuable insight into processes occurring in the surrounding medium, such as groundwater–surface water interactions, dam stability or soil moisture. Until now, heated applications required direct handling of the DTS instrument by a researcher, rendering long-term investigations in remote areas impractical due to the often difficult and time-consuming access to the field site. Remote control and automation of the DTS instrument and heating processes, however, resolve the issue with difficult access. The data can also be remotely accessed and stored on a central database. The power supply can be grid independent, although significant infrastructure investment is required here due to high power consumption during heated applications. Solar energy must be sufficient even in worst case scenarios, e.g. during long periods of intense cloud cover, to prevent system failure due to energy shortage. In combination with storage batteries and a low heating frequency, e.g. once per day or once per week (depending on the season and the solar radiation on site), issues of high power consumption may be resolved. Safety regulations dictate adequate shielding and ground-fault protection, to safeguard animals and humans from electricity and laser sources. In this paper the autonomous DTS system is presented to allow research with heated applications of DTS in remote areas for long-term investigations of temperature distributions in the environment.

scholarly journals Autonomous distributed temperature sensing for long-term heated applications in remote areas

2012 ◽  
Vol 2 (2) ◽  
pp. 855-873
Author(s):  
A.-M. Kurth ◽  
N. Dawes ◽  
J. Selker ◽  
M. Schirmer
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Surrounding Medium ◽  
Temperature Sensing ◽  
Valuable Insight ◽  
Distributed Temperature Sensing ◽  
Worst Case ◽  
Remote Areas ◽  
High Power Consumption

Abstract. Distributed Temperature Sensing (DTS) is a fiber-optical method enabling simultaneous temperature measurements over long distances. Electrical resistance heating of the metallic components of the fiber-optic cable provides information on the thermal characteristics of the cable's environment, providing valuable insight into processes occurring in the surrounding medium, such as groundwater-surface water interactions, dam stability or soil moisture. Until now, heated applications required direct handling of the DTS instrument by a researcher, rendering long-term investigations in remote areas impractical due to the often difficult and time-consuming access to the field site. Remote-control and automation of the DTS instrument and heating processes, however, resolve the issue with difficult access. The data can also be remotely accessed and stored on a central database. The power supply can be grid-independent, although significant infrastructure investment is required here due to high power consumption during heated applications. Solar energy must be sufficient even in worst case scenarios, e.g. during long periods of intense cloud cover, to prevent system failure due to energy shortage. In combination with storage batteries and a low heating frequency, e.g. once per day or once per week (depending on the season and the solar radiation on site), issues of high power consumption may be resolved. Safety regulations dictate adequate shielding and ground-fault protection, to safeguard animals and humans from electricity and laser sources. In this paper the autonomous DTS system is presented to allow research with heated applications of DTS in remote areas for long-term investigations of temperature distributions in the environment.

scholarly journals Low–High-Power Consumption Architectures for Deep-Learning Models Applied to Hyperspectral Image Classification

2019 ◽  
Vol 16 (5) ◽  
pp. 776-780 ◽  
Author(s):  
Juan M. Haut ◽  
Sergio Bernabe ◽  
Mercedes E. Paoletti ◽  
Ruben Fernandez-Beltran ◽  
Antonio Plaza ◽  
...  
Keyword(s):  
Deep Learning ◽  
Power Consumption ◽  
Image Classification ◽  
High Power ◽  
Hyperspectral Image ◽  
Learning Models ◽  
Hyperspectral Image Classification ◽  
High Power Consumption

An Experiment Study on the Moisture Absorption and Desorption Characteristic of Humidity-Controlled Composite Building Blocks in Greenhouse

2011 ◽  
Vol 335-336 ◽  
pp. 240-243
Author(s):  
Feng Lan Wei ◽  
Chun Long Li ◽  
E Liu ◽  
Cai Bei Zhang
Keyword(s):  
Relative Humidity ◽  
Power Consumption ◽  
High Power ◽  
Moisture Absorption ◽  
Building Blocks ◽  
Absorption Characteristic ◽  
Experiment Study ◽  
High Power Consumption ◽  
Equilibrium Content ◽  
Application Prospects

The moisture absorption characteristic of the humidity-controlled materials at different relative humidity was studied by experiment and the moisture equilibrium content under different humidity condition was obtained. At the same time, the humidity-controlled composite building blocks in greenhouse were successfully developed. The experiment of the humidity-controlled composite building blocks shows that the humidity-controlled composite building blocks can realize the humidity control without the high power consumption, operation inconvenience or polluted the environment etc. compared with the traditional dehumidification method. The humidity-controlled composite building blocks in greenhouse have the very good application prospects.

Research of Low Power Design Strategy Based on IEEE 1801 Unified Power Format

2014 ◽  
Vol 981 ◽  
pp. 21-24
Author(s):  
Shu Ping Cui ◽  
Chuang Xie
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Circuit Design ◽  
High Power ◽  
Low Power Design ◽  
Design Strategy ◽  
Design Flow ◽  
Battery Life ◽  
Electronic Systems ◽  
High Power Consumption

Power consumption is becoming an increasingly important aspect of circuit design. High power consumption can lead to high machine temperature, short battery life which makes laptop electronics difficult to be widely used. IEEE 1801 Unified Power Format (UPF) is designed to express power intent for electronic systems and components .This paper first introduces the power principles, puts forward the approaches to reduce power consumption according to UPF, and then demonstrates the Synopsys design flow based on UPF, finally gives the power report and makes a conclusion.

scholarly journals Raman distributed temperature sensing for end winding of high-power generator

2020 ◽  
Vol 14 (6) ◽  
pp. 343-349
Author(s):  
Jessé de Pelegrin ◽  
João Paulo Bazzo ◽  
Uilian José Dreyer ◽  
Cicero Martelli ◽  
Daniel Rodrigues Pipa ◽  
...  
Keyword(s):  
High Power ◽  
Temperature Sensing ◽  
Distributed Temperature Sensing ◽  
Power Generator

Long-term district-scale geothermal exchange borefield monitoring with fiber optic distributed temperature sensing

Geothermics ◽  
2018 ◽  
Vol 72 ◽  
pp. 193-204 ◽  
Author(s):  
Adam McDaniel ◽  
Dante Fratta ◽  
James M. Tinjum ◽  
David J. Hart
Keyword(s):  
Fiber Optic ◽  
Temperature Sensing ◽  
Distributed Temperature Sensing

Pulse Width Modulation Based Decentralized Street LED Light Dimming System

2017 ◽  
Vol 8 (3) ◽  
pp. 1220 ◽  
Author(s):  
Hussain Attia ◽  
Amjad Omar ◽  
Maen Takruri ◽  
Halah Y. Ali
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Data Transfer ◽  
Street Lighting ◽  
Led Light ◽  
Dimming Control ◽  
High Power Consumption ◽  
Lighting Systems

<p>The high power consumption of conventional street lighting systems, and the consequences on environmental ecosystem due to continuous turning ON of light, have led researchers to seek solutions to this problem. LED light dimming system has been presented in many studies using computerized systems with or without wireless monitoring facility. The demerits of these systems include complexity, high cost and unfixed data transfer speed. This paper proposes to reduce power consumption of street lighting through a decentralized light dimming system that is based on Pulse Width Modulation (PWM). This is in addition to replacing conventional high power lamps with lower power LED lamps. The dimming control circuit of this system is fixed on each pole and controlled individually resulting in faster and more reliable response. The proposed system uses the available infrastructure and is suitable for small or main streets regardless of the number of light poles. It is also flexible in its coverage distance due to the freedom of motion detector selection. The advantages of using LED lighting on the environment as compared to conventional lighting are explained. Simulations reveal the effectiveness of the proposed system on energy saving and on the environment.</p>

Coupled and Self-Adaptive Under-Actuated Finger With a Novel S-Coupled and Secondly Self-Adaptive Mechanism

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Guoxuan Li ◽  
Chi Zhang ◽  
Wenzeng Zhang ◽  
Zhenguo Sun ◽  
Qiang Chen
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Experimental Results ◽  
Transmission Mechanism ◽  
Adaptive Mechanism ◽  
The Novel ◽  
Force Analysis ◽  
Grasping Force ◽  
High Power Consumption ◽  
Self Adaptive

This paper presents a novel under-actuated (UA) finger with first coupled and secondly self-adaptive (COSA) grasping mode. COSA fingers can adaptively grasp objects with different sizes and shapes while its motions during grasping are anthropopathic. Until now there are two COSA mechanisms available and they are both direct parallel combinations of coupled mechanism and self-adaptive mechanism. These kind of direct combinations lead to complex mechanical structure and high power consumption. This paper proposes a novel single-route transmission mechanism for COSA grasping mode, S-coupled and directly self-adaptive (CDSA) mechanism for short. Compared with available COSA mechanisms, the S-CDSA mechanism has simpler structure and higher grasping force. Design of 2-joint S-CDSA finger is introduced in this paper. Force analysis for 2-joint S-CDSA finger is given. Furthermore, a 2-joint S-CDSA finger is manufactured. The force analysis and experimental results show that the novel S-CDSA mechanism is effective.

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