國立虎尾科技大學 |

Wireless sensors for condition monitoring applications operating in complete metallic environment.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Wireless sensors for condition monitoring applications operating in complete metallic environment./
作者:	Gupta, Lokesh A.
面頁冊數:	1 online resource (120 pages)
附註:	Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
Contained By:	Dissertation Abstracts International75-06B(E).
標題:	Electrical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781303752599

Wireless sensors for condition monitoring applications operating in complete metallic environment.
Gupta, Lokesh A.

Wireless sensors for condition monitoring applications operating in complete metallic environment. - 1 online resource (120 pages)

Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

This item is not available from ProQuest Dissertations & Theses.

Condition monitoring of machines is advantageous in predicting failure and estimating machine component lifetime. Continuous monitoring of parameters such as temperature, vibration, and strain using sensors and consequent data analysis can help in reducing machine downtime by taking corrective actions before failure. Various wireless and wired sensors may be attached to critical components such as bearings, gears, mechanical seals, shafts etc. for measurements. These sensors however are often inadequate solutions as wired sensors are dicult to mount on rotating components, especially in millimeter-size spaces that may exist in some of these components. Wireless sensors provide a viable solution for measurements in rotating components but their range and performance are often limited due to power-supply constraints. The majority of these components are enclosed in metal housings (ex.pumps and motors). In such scenarios, wireless communication is nearly impossible due to severe signal attenuation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781303752599Subjects--Topical Terms:

596380
Electrical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Wireless sensors for condition monitoring applications operating in complete metallic environment.
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245 1 0 $a Wireless sensors for condition monitoring applications operating in complete metallic environment.
264 0 $c 2013
300 $a 1 online resource (120 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
500 $a Adviser: Dimitrios Peroulis.
502 $a Thesis (Ph.D.) $c Purdue University $d 2013.
504 $a Includes bibliographical references
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a Condition monitoring of machines is advantageous in predicting failure and estimating machine component lifetime. Continuous monitoring of parameters such as temperature, vibration, and strain using sensors and consequent data analysis can help in reducing machine downtime by taking corrective actions before failure. Various wireless and wired sensors may be attached to critical components such as bearings, gears, mechanical seals, shafts etc. for measurements. These sensors however are often inadequate solutions as wired sensors are dicult to mount on rotating components, especially in millimeter-size spaces that may exist in some of these components. Wireless sensors provide a viable solution for measurements in rotating components but their range and performance are often limited due to power-supply constraints. The majority of these components are enclosed in metal housings (ex.pumps and motors). In such scenarios, wireless communication is nearly impossible due to severe signal attenuation.
520 $a This research provides a unique solution to the above issues by implementing sensors based on temperature-induced magnetic field change of permanent neodymium magnets. Hall Effect sensors are employed to detect these changes. The static magnetic The field can pass through non-magnetic, metals such as estimates steels, copper, aluminum etc. thus allowing temperature sensing through complete metal enclosures. In this thesis, we present wireless sensors for bearing inner race and mechanical seal remote temperature measurement. A permanent neodymium ring-shaped magnet is attached to the inner race of the bearing, while temperature is read remotely using a Hall Effect sensor. The sensor is characterized on a hot plate for calibration equation and noise analysis. These calibration equations are later used for dynamic testing on bearing test rig. For mechanical seals, the sensor is implemented using a 2.2-mm diameter semi-cylindrical magnet with Hall Effect sensor mounted in a hole on steel flange. Temperature sensing is achieved through a metallic flange holding the seal in place. The temperature measurement concept is further extended to measure temperature and vibration simultaneously using permanent magnet and Hall Effect sensor. Furthermore, we also present various magnet lifetime tests and results with a detailed discussion about magnet lifetime. High temperature effects on magnet's magnetic field are also discussed.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Electrical engineering. $3 596380
655 7 $a Electronic books. $2 local $3 554714
690 $a 0544
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Purdue University. $b Electrical and Computer Engineering. $3 1148521
773 0 $t Dissertation Abstracts International $g 75-06B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3613133 $z click for full text (PQDT)