Electrical Current Monitoring Methods

2011 ◽  
Keyword(s):  
Electrical Current ◽  
Monitoring Methods ◽  
Current Monitoring

scholarly journals Infant home respiratory monitoring using pulse oximetry

2016 ◽  
Vol 103 (6) ◽  
pp. 603-605 ◽  
Author(s):  
Paul Seddon ◽  
Sonia Sobowiec-Kouman ◽  
David Wertheim
Keyword(s):  
Pulse Oximetry ◽  
Respiratory Rate ◽  
Preterm Infants ◽  
Pulse Oximeter ◽  
Respiratory Monitoring ◽  
Monitoring Methods ◽  
Term Neonates ◽  
Respiratory Inductive Plethysmography ◽  
Current Monitoring ◽  
Inductive Plethysmography

Respiratory rate (RR) is a valuable early marker of illness in vulnerable infants, but current monitoring methods are unsuitable for sustained home use. We have demonstrated accurate measurement of RR from brief recordings of pulse oximeter plethysmogram (pleth) trace in full-term neonates in hospital. This study assessed the feasibility of this method in preterm infants during overnight recordings in the home. We collected simultaneous overnight SpO2, pleth and respiratory inductive plethysmography (RIP) on 24 preterm infants in the home. RR from pleth analysis was compared with RR from RIP bands; pleth quality was assessed by the presence of visible artefact. Median (range) RR from RIP and pleth were not significantly different at 42 (25–65) and 42 (25–64) breaths/min. Median (range) % of epochs rejected due to artefact was 20 (8–75) for pleth and 10 (3–53) for RIP. Our results suggest that home RR monitoring by pulse oximeter pleth signal is accurate and feasible.

scholarly journals Condition Monitoring of Three Phase Induction Motor using Current Signature Analysis

2021 ◽  
Vol 9 (VI) ◽  
pp. 1946-1955
Author(s):  
Sai Sharath Podduturi
Keyword(s):  
Induction Motor ◽  
Condition Monitoring ◽  
Vibration Monitoring ◽  
Signature Analysis ◽  
Monitoring Methods ◽  
Bearing Faults ◽  
Outer Race ◽  
Gabor Analysis ◽  
Current Monitoring ◽  
Current Signature

In this paper we are going to see how Gabor transform is used to analyze the signal and to determine the inner and outer race of bearing faults by monitoring the condition of Induction motor using Motor Current Signature Analysis. Among the various faults bearing faults is the major problem, which cause a huge damage to induction motor, when unnoticed at developing stage. So, monitoring of bearing faults is very important and it can done by several conditions monitoring methods like thermal monitoring, vibration monitoring and more but these methods require expensive sensors or specified tools, whereas current monitoring methods doesn’t require any additional tools. Usually, this condition monitoring is used to detect the various faults like bearing faults, load faults by MCSA. If the fault is present in the motor, the frequency spectrum of the line current is different from healthy ones, the Gabor analysis detects the fault signature generated in the induction motor, by using mathematical expressions and calculate the RMS and Standard deviation values, these fault values are different from healthy ones. Through this we can identify faults.

scholarly journals Revising the accuracy quality parameters improving of multicolor printed items

2021 ◽  
pp. 158-162
Author(s):  
О.В. Трапезникова
Keyword(s):  
High Speed ◽  
Standard Procedure ◽  
Quality Parameters ◽  
The Novel ◽  
Printing Industry ◽  
Monitoring Methods ◽  
Monitoring Techniques ◽  
The Moment ◽  
Processing Techniques ◽  
Current Monitoring

Проблема повышения точности контроля в процессе производства различных печатных изделий не теряет своей актуальности в связи с совершенствованием как технологий изготовления самих изделий, так контрольно-измерительной техники и методов контроля. Поскольку нанесение красочного изображения, выполняющего информационную функцию, на печатное изделие способами печатания осуществляется на достаточно высокой скорости, то широко используемый метод визуального контроля малоэффективен, применим выборочно, не позволяет обеспечить требуемую точность. Следствием этого является брак или ухудшение качества напечатанных изображений на печатных изделиях. Показано, что действующие методы контроля, регламентированные стандартами, не отвечают требованиям для выпуска конкурентоспособной на современном рынке продукции В работе проанализированы стандартные и запатентованные методы контроля показателей качества, нанесенного на печатное изделие изображения способами печатания. Отмечены направления их модернизации и разработки новых объективных методов контроля, что возможно осуществлять только за счет использования современных систем с применением программых продуктов, разработанных под конкретный объект контроля, способствующих интеграции процессов измерения и анализа информации для стабилизации технологического процесса печати. Предложен метод контролякрасковосприятия, который основан на методах математического и гармонического анализа. Ввиду отсутствия стандарта, разработан алгоритм контроля показателя укрывистость. Оценка и контроль укрывистости в данном алгоритме базируется на методах математической статистики. Определение и контроль показателей красковосприятия, укрывистость осуществляется с помощью разработанных программ для ЭВМ, что позволяет не только существенно сократить время контроля, но и повысить его точность. Providing that both current processing techniques and supervisory instruments is updating, the problem of the accuracy quality parameters continues to be relevant for printing industry. Due to high-speed processes of the printed items manufacturing the current visual-based monitoring techniques can be thought of as low informative, selective applied resulted in accuracy decreasing at lot inspections. The most current monitoring methods regulated by standards are low-efficient at the moment. Both standard and patented quality monitoring techniques for printed images monitoring were analyzed. The listed techniques upgrading trends and points of the novel objective ones developing based on specified software hardware integration of measurement and information analysis procedures aimed at the operational process stabilization are noted. The ink trapping monitoring technique based on both mathematical and Fourier analysis is proposed. As long as the standard procedure is deficient, the algorithm of covering power control based used mathematical statistics approaches was developed. The monitoring is carried out by the developed software.

Characteristics of Marine Debris Movement Pattern Using Location Tracking Buoys

2020 ◽  
Author(s):  
Minji Jeong ◽  
Suho Bak ◽  
Nakyeong Kim ◽  
Hongjoo Yoon
Keyword(s):  
Movement Pattern ◽  
Marine Debris ◽  
Location Tracking ◽  
Monitoring Methods ◽  
The Sustainable Development ◽  
Movement Characteristics ◽  
Development Goals ◽  
Current Monitoring ◽  
Marine Environmental ◽  
United Nation

<p><span>Recently, marine debris, which is emerging most in the marine environment, becomes a global problem and becomes a factor of marine environmental pollution. In particular, the United Nation General Assembly adopted the Sustainable Development Goals(SDGs), the largest joint goal of the United Nations and the international community, which is to be implemented from 2016 to 2030, including the reduction of marine waste by 2025 in the detailed marine sector. Marine debris, which is emerging as an international environmental issue, is emphasized mainly by coastal countries and can be seen in domestic coasts. Accordingly, coastal debris monitoring is carried out to investigate debris on designated coasts in Korea. However, the current monitoring methods have limitations in identifying the amount and type of coastal debris by region. And when comparing the amount of inflow and collection of marine debris in Korea, the collection amount is less than half compared to the inflow amount. Therefore, it is necessary to understand the movement pattern characteristics by tracking the behavior of marine debris. In this study uses the location tracking buoys which can identify the movement characteristics of marine debris in accordance with the floating and direct influence in real-time. Therefore, GPS terminals built into objects that are shaped like marine debris, suggesting that they can track what movement patterns are characteristic of current and wind effects.</span></p>

Monitoring submerged riverine macroplastics using echo sounding

2020 ◽  
Author(s):  
Sophie Broere ◽  
Tim van Emmerik ◽  
Daniel González-Fernández ◽  
Willem Luxemburg ◽  
Andrés Cózar ◽  
...  
Keyword(s):  
River Basin ◽  
River Flow ◽  
Plastic Waste ◽  
Mitigation Strategies ◽  
Environmental Damage ◽  
Monitoring Methods ◽  
Riverine Litter ◽  
Object Depth ◽  
Current Monitoring ◽  
Echo Sounding

<p>Riverine plastics cause severe global problems, regarding the risk for human health and environmental damage. The major part of the plastic waste that ends up in the oceans is transported via rivers. However, estimations of global quantities of plastics entering the oceans are associated with great uncertainties due to methodological difficulties to accurately quantify land-based plastic fluxes into the ocean. Yet, there are no standard methods to determine quantities of plastics in rivers. For the sake of reducing the amount of plastic waste in the natural environment, information on plastic fluxes from rivers to seas is needed. Focussing on monitoring of the plastic litter that is transported by rivers is useful because measures can easier be implemented in rivers than in seas. Moreover, consistent measuring techniques are crucial to optimise prevention-and mitigation strategies, especially in countries with high expected river plastic emissions.</p><p>Additionally, based on plastic characteristics and turbulent river flow conditions, a considerable portion of the riverine litter can also be transported underneath the surface in the water column. Current monitoring methods regarding macro plastics are labour intensive and do not provide continuous measurements for submerged riverine plastics. Besides, most research done focussed on floating macro litter, instead of submerged plastics. The aim of this research was to find a standard method, applicable in different river systems, for detecting submerged macro plastics.</p><p>With the use of the Deeper Chirp+ fishfinder, several tests were conducted both in the Guadalete river basin in southern Spain and in the lab at the TU Delft. Spanish, and in general European rivers are estimated to transport two to three orders of magnitude below rivers in Asia (Malesia and Vietnam), and should not be neglected. The Guadalete river basin formed a suitable location to test this new method. First, monitoring in the Guadalquivir river was executed, with the use of a net to validate the readings of the sonar. Furthermore, the detecting abilities of the echosounder, in the Guadalete river basin, were tested with the use of plastic targets. The targets were released in the river and passed the sensor at a certain time. Moreover, tests in the lab at the TU Delft were conducted to investigate relations between sonar signal and flow velocity, object depth, and object size.</p><p>The tests show that submerged macro plastics can be detected with the use of echo sounding. Moreover, a relation between the sonar signal and litter size is found. Finally, signal intensities can be related to object properties. In conclusion, the use of echo sounding has a high potential for obtaining more accurate plastic flux estimations.</p>

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