This work reports a focused antenna array that could allow for an accurate interrogation of passive sensors. In recent years, some passive sensors have been proposed [1, 2], however there are often problems reading th...
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ISBN:
(数字)9798350360974
ISBN:
(纸本)9798350360981
This work reports a focused antenna array that could allow for an accurate interrogation of passive sensors. In recent years, some passive sensors have been proposed [1, 2], however there are often problems reading these sensors due to interference with the surrounding environment. The proposed idea is therefore to focus the beam exclusively on the sensor. The reading system is formed by two cross-polarized near-field arrays which are able to concentrate the radiated fields in the area occupied by the sensor under test thus avoiding scattering from nearby objects with a consequent reduction of clutter. The proposed NF focused array is composed of 16x16 elements and it works around 20 GHz (λ equal to 15 mm). The array has a layered structure. There are two dielectric substrates (Itera MT40 material), the lower substrate has a thickness of 0.254 mm and the upper one 0.762 mm. The feeding network, which represents the bottom of the structure, is created on the first substrate. On the top of this substrate there is a perforated metal surface. Metallic rectangular patches are made on the top of the second substrate. Vias cross the entire structure to connect the feeding network with the patches.
Accurate characterisation of magnetic sensors is required across a range of industrial applications. The National Physical Laboratory (NPL), as the UK's National Metrology Institute (NMI), maintains and disseminat...
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ISBN:
(数字)9798350362213
ISBN:
(纸本)9798350362220
Accurate characterisation of magnetic sensors is required across a range of industrial applications. The National Physical Laboratory (NPL), as the UK's National Metrology Institute (NMI), maintains and disseminates measurement standards, with traceability to SI units, that provides characterisation of advanced magnetic sensors from nT-level to several T. Space missions can benefit from the increasing sensitivity and accuracy of magnetic sensors. To calibrate such sensors, a low magnetic noise environment and traceable measurement systems must be established. Both spacecraft design and in-flight operation must rigorously incorporate magnetic cleanliness and compensate for field fluctuations. To reduce measurement uncertainties and dependent sensor error budgets, a greater understanding of the magnetic environment becomes crucial. This presentation will describe the development of traceable measurements systems at NPL that enable the characterisation of these sensors at the nT level for space applications. These systems allow key parameters, such as gain, linearity, offset and noise to be determined, with specific attention given to the measurement of the temperature dependance of these key parameters, and recent developments for the orthogonality of small magnetometers in a fast and cost-efficient way.
The use of sensor nodes in heterogeneous networks marks a significant progress in the field of wireless sensor networks (WSNs), hence enhancing the adaptability and efficiency of the networks in various applications. ...
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ISBN:
(数字)9798331521349
ISBN:
(纸本)9798331521356
The use of sensor nodes in heterogeneous networks marks a significant progress in the field of wireless sensor networks (WSNs), hence enhancing the adaptability and efficiency of the networks in various applications. This approach combines several sensor nodes into one network to offer thorough and strong data collecting. Every node has unique power needs, communication methods, and set of capabilities. Among the several significant applications—such as in smart cities, industrial automation, environmental monitoring, and healthcare—the main advantages are enhanced data accuracy, error resilience, and situational adaptation to new conditions. The areas of worry include assuring perfect compatibility, effective energy management, and safe data transport. Future research and development activities based on advanced technologies such 5G, machine learning, and artificial intelligence will mostly focus on enhancing the efficiency and efficacy of network deployment and operation. This will enable intelligent decision-making and real-time monitoring in environments limited resources.
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791887059
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791886953
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791887103
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791886991
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
Wearable biosignal processing applications are driving significant progress toward miniaturized, energy-efficient Internet-of- Things solutions for both clinical and consumer applications. However, scaling toward high...
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The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791887035
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural...
ISBN:
(纸本)9780791886977
The proceedings contain 912 papers. The topics discussed include: applicability of numerical simulation to the classification of fluid dynamic loss in aeroengine transmission gears;the development and use of a natural gas/oxygen burner rig for environmental barrier coating and ceramic matrix composite technology maturation;development of innovative low NOx hydrogen-fueled burner for aeronautic applications;analysis of different emission metrics for power generation machinery in flexible co-generation energy systems;development of a turbocharger speed sensor using fiber optic coupled optical method;advanced polytropic efficiency and H-S diagram application;compressor design for compact, highspeed electric motors;laser welding in steam turbine rotor recondition;structural characterization of a rapid-prototyped inlet particle separator model for aerodynamic lab testing;supercritical carbon dioxide shock behavior near the critical point;a characteristic-based 1D axial compressor model for stall and surge simulations;strategies for high-accuracy measurements of stage efficiency for a cooled turbine;and mineral composition effects on dust deposition at realistic engine conditions.
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