Analysis of an enclosure for a MEMS DC electric field sensor

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dc.contributor.authorIsik, Sadna
dc.contributor.examiningcommitteeJeffrey, Ian (Electrical and Computer Engineering)en_US
dc.contributor.examiningcommitteeFilizadeh, Shaahin (Electrical and Computer Engineering)en_US
dc.contributor.supervisorShafai, Cyrus
dc.date.accessioned2023-03-22T15:36:59Z
dc.date.available2023-03-22T15:36:59Z
dc.date.copyright2023-03-20
dc.date.issued2023-03-20
dc.date.submitted2023-03-20T16:38:02Zen_US
dc.degree.disciplineElectrical and Computer Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractMEMS DC electric field sensors are successful candidates in the field of monitoring power utility infrastructure. Their delicate size and nature require them to be placed in a protective enclosure when used in an outdoor environment. The enclosure surrounding an electric field sensor affects the measurement conditions and sensor performance. This thesis presents an enclosure for MEMS DC electric field sensors with a height-adjustable floating pin conductor to augment the signal. The enclosure top assembly includes a metal pin extending into the enclosure to augment the signal seen by the sensor. A floating metal plate and an adjustable floating pin on the enclosure body are included to pass the electric field into the enclosure and onto the sensor. The electric field strength variation is computed while changing the distance between the sensor and the body of the sensor enclosure by changing the length of the floating pin. The behaviors of electric field strength on the sensor are studied by varying parameters. A capacitance model is studied and proposed for the enclosure structure. Simulation and experimental tests are performed for a conducting electrically floating plate, which is placed 14.6 mm above the sensor and a conducting pin, which is located at different heights above the sensor. For the enclosure design considered, when the pin is placed 1 mm above the sensor, the measured electric field is 18.3 times stronger than when the same electric field is measured without the pin. Simulation and experiment results show that a floating pin can help to reduce signal loss due to the gap by extending into the enclosure, which significantly increases the incident electric field upon the sensor located deeper inside the enclosure box. These enclosures can be integrated with other sensor types, such as field mills, to eliminate the potential disadvantages of locating sensors inside protective enclosures.en_US
dc.description.noteMay 2023en_US
dc.identifier.urihttp://hdl.handle.net/1993/37214
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectDC electric field sensoren_US
dc.subjectFloating conducting pinen_US
dc.subjectFloating metal plateen_US
dc.subjectDC electric field sensor enclosureen_US
dc.subjectDC electric field sensor enclosure with electrically floating conducting pinen_US
dc.subjectCapacitance model for DC electrical field sensor enclosureen_US
dc.titleAnalysis of an enclosure for a MEMS DC electric field sensoren_US
dc.typemaster thesisen_US
local.subject.manitobanoen_US
oaire.awardURIhttps://www.mitacs.ca/en/projects/groundless-mems-dc-voltage-sensors-electric-power-utilitiesen_US
project.funder.identifierMITACSen_US
project.funder.nameNatural Sciences and Engineering Research Council of Canadaen_US
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