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Encapsulation method for smallwireless measurement systems in high temperature environments
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Number of Authors: 2
2016 (English)Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents an encapsulation concept that enables the construction of small wireless measurement systems that can operate in industrial environments with ambient temperatures of up to 1200°C. To maximize operational time and minimize size, a layer of thermal insulation is combined with water absorbed in a porous material in the core of the device. The simulated operating time before all of the frozen water at 0?C has transformed into steam at 100°C when the ambient temperature of the device was 1200°C is 21 minutes for a sphere with an outer radius of 4 cm. If the outer radius is increased to 10 cm the simulated operating time increases to 125 minutes. Measurements were performed to validate the design. When a sphere with a radius of 4 cm was subjected to an oven temperature of 1200°C the device held the core temperature at or below 101°C for a total of 25 minutes. The time to reach the boiling point of the water was 9 minutes. Thereafter, the temperature was held constant at 100 +/- 1°C for an additional 16 minutes whereafter a rapid rise in temperature took place once all water had evaporated.

Place, publisher, year, edition, pages
IMAPS-International Microelectronics and Packaging Society , 2016.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-60878Scopus ID: 2-s2.0-84995611743OAI: oai:DiVA.org:ltu-60878DiVA: diva2:1051548
Conference
IMAPS International Conference and Exhibition on High Temperature Electronics, HiTEC 2016, Albuquerque, 10-12 May 2016
Available from: 2016-12-02 Created: 2016-12-02 Last updated: 2016-12-02Bibliographically approved

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