Properties of NTD #23 Ge sensors and RuO2 films as thermal sensors for bolometers

This research proposes a wireless RFID-based thermal bubble accelerometer design, and relates more particularly for the technology to manufacture and package it on a flexible substrate. The key technology is to integrate both a thermal bubble accelerometer and a wireless RFID antenna on the same substrate, such that the accelerometer is very convenient for fabrication and usage. In this paper the heaters as well as the thermal sensors are directly adhering on the surface of the flexible substrate without the traditional floating structure. Thus the structure is much simpler and cheaper for manufacturing, and much more reliable in large acceleration impact condition without broken. Furthermore, the molecular weight of xenon gas is much larger than carbon dioxide, thus the performance of the accelerometer will be increased. In addition, the shape of the chamber is changed as a semi-cylindrical one instead of the conventional rectangular type. Comparisons of sensitivity and response time are also made; one can see the performances of the proposed new design with either semi-cylindrical chamber or filled with xenon gas are better.

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A novel compact design of calibration equipment for gas and thermal sensors

Review of Scientific Instruments ◽

10.1063/1.3581207 ◽

2011 ◽

Vol 82 (4) ◽

pp. 043303 ◽

Cited By ~ 10

Author(s):

P. X. Feng ◽

H. X. Zhang ◽

X. Y. Peng ◽

M. Sajjad ◽

J. Chu

Keyword(s):

Thermal Sensors ◽

Compact Design

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Development of tests of increased reliability sensors for inspection system of axle box heating

Transport of the Urals ◽

10.20291/1815-9400-2021-3-39-45 ◽

2021 ◽

pp. 39-45

Author(s):

Evgeniy Viktorovich Kozeev ◽

◽

Oleg Sergeevich Samoshkin ◽

Evgeniy Nikolaevich Popov ◽

Valeriy Evgenyevich Volkov ◽

...

Keyword(s):

Main Element ◽

Inspection System ◽

Thermal Sensor ◽

Thermal Sensors ◽

Passenger Cars ◽

Control Operation ◽

Roller Bearings ◽

Pilot Batch ◽

New Sensors

All the domestic passenger cars since 1960 are produced only on bogies with roller bearings. A transition to roller bearings demanded the cars to be equipped with inspection system of axle box heating. It is necessary because axle box be heated over a specified temperature that leads to deterioration of the oil lubricity. The main element of the inspection system of axle box heating is a thermal sensor that is installed on each axle box. Nowadays, bolster bogies of all models are equipped with type 393 thermal sensors. At introduction of new bolsterless bogies the installation of the type 393 thermal sensors on the axle boxes was carried out with the use of special brass adapter. The observations in operation showed insufficient reliability of the inspection system of axle box heating in bolsterless bogies. Consequently, the authors have carried out research on new increased reliability thermal sensors. The pilot batch has passed preliminary and acceptance rig tests. On the results of the rig tests it has been decided to carry out an under-control operation on mainline passenger cars. The under-control operation with new sensors has been carried out on the basis of the Novosibirsk passenger wagon depot. On the basis of its results the authors have established the required temperature of the inspection system of axle box heating actuation.

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elevated body temperature screening with thermopiles and other thermal sensors

Infrared Technology and Applications XLVII ◽

10.1117/12.2590742 ◽

2021 ◽

Author(s):

Joerg Schieferdecker ◽

Bodo Forg ◽

Marion Simon ◽

Wilhelm Leneke ◽

Michael Schnorr ◽

...

Keyword(s):

Body Temperature ◽

Thermal Sensors ◽

Elevated Body Temperature

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Bi2Te3 and Sb2Te3 Thin Films with Enhanced Thermoelectric Properties for Flexible Thermal Sensors

Proceedings ◽

10.3390/proceedings2130815 ◽

2018 ◽

Vol 2 (13) ◽

pp. 815

Author(s):

Eliana Vieira ◽

Joana Figueira ◽

Ana Lucia Pires ◽

José Grilo ◽

Manuel Fernando Silva ◽

...

Keyword(s):

Thin Films ◽

Thermoelectric Properties ◽

Power Factor ◽

Thermal Sensors ◽

Substrate Type ◽

Influence Of Substrate ◽

Thermopile Sensor

The influence of substrate type in boosting thermoelectric properties of co-evaporated Bi2Te3 and Sb2Te3 films (with 400 nm-thick) is here reported. Optimized power factor values are 2.7 × 10−3 W K−2 m−1 and 1.4 × 10−3 W K−2 m−1 for flexible Bi2Te3 and Sb2Te3 films, respectively. This is an important result as it is at least 2 times higher than the power factor found in the literature for flexible Bi2Te3 and Sb2Te3 films. A flexible infrared thermopile sensor was developed with high detectivity (2.50 × 107 cm √HzW−1).

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Application of Thermal Sensors for Determination of Mass Flow Rate and Velocity of Flow in Pipes of Hermetic Systems

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.826.117 ◽

2019 ◽

Vol 826 ◽

pp. 117-124

Author(s):

Yurii Baidak ◽

Iryna Vereitina

Keyword(s):

Temperature Distribution ◽

Mass Flow Rate ◽

Cross Section ◽

Correction Factor ◽

Mass Flow ◽

Flow Rate ◽

Thermal Sensors ◽

Pipe Surface ◽

Pipe Cross Section

The paper relates to the field of measuring technologies and deals with the enhancement of thermoconvective method when it is applied for the experimental determination of such hydrodynamics indicators as mass flow rate and velocity of flow by their indirect parameters - capacity of the heater and the temperatures obtained from two thermal sensors, provided that they are located on the hermetic piping system surface. The issue of determination of correction factor on heterogeneity of liquid temperature distribution in the pipe cross section depending on pipe diameter and fluid movement velocity was clarified. According to the results of numerical calculations, the dependencies of temperature gradient on the pipe surface and the correction factor on the heterogeneity of the temperature distribution along the pipe cross-section under the heater in the function of the velocity of flow in pipes of different diameters are plotted. These dependencies specify the thermal method of studying the fluid flow in the pipes, simplify the experiment conduction, are useful in processing of the obtained results and can be applied in measuring engineering.

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