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dc.contributor.authorKandel, Matthew Kreismanen_US
dc.date.accessioned2014-03-14T20:50:27Z
dc.date.available2014-03-14T20:50:27Z
dc.date.issued2011-12-07en_US
dc.identifier.otheretd-12192011-134916en_US
dc.identifier.urihttp://hdl.handle.net/10919/36314
dc.description.abstractDue to inadequate training and an undeveloped ability to recognize dangerous scenarios, youth workers are exposed to many dangers in the agriculture and lawn care industries. With the abundance of new technologies available on the market, a project was devised to prevent youth from heat exhaustion and equipment run overs by employing sensor based technologies. Using aural temperature measurement techniques involving a thermistor and thermopile, an accurate estimation of core body temperature can be made. The measurements performed by the devices are recorded and transmitted wirelessly over a ZigBee network using XBee radiofrequency modules. Utilizing the properties of radiofrequency transmission, the Received Signal Strength Indication (RSSI) is used to approximate the distance between devices. With accuracy comparable to GPS methods and no necessity for line of sight to sky, RSSI supplies a more than adequate estimate for proximity distance. The temperature and RSSI values are then sent to a coordinating modem where the data is displayed for the supervisor. After testing and calibrating the device, it was found that these methods are effective for the monitoring of core body temperature and proximity of workers. The temperature sensor was able to measure temperatures with less than 0.25% error and the proximity sensor was able to estimate distance within 1.25 meters at close range.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartKandel_MK_T_2011_Copyright.pdfen_US
dc.relation.haspartKandel_MK_T_2011.pdfen_US
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjecthandheld deviceen_US
dc.subjectZigBeeen_US
dc.subjectXBeeen_US
dc.subjectsensor developmenten_US
dc.subjectheat exhaustionen_US
dc.subjectproximityen_US
dc.subjecthealthen_US
dc.titleDesign of a System to Monitor Youth Workers' Heat Stress and Positioning using Non-invasive Techniquesen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeememberWicks, Alfred L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12192011-134916/en_US
dc.contributor.committeecochairDiller, Thomas E.en_US
dc.contributor.committeecochairGrisso, Robert D. Jr.en_US
dc.date.sdate2011-12-19en_US
dc.date.rdate2012-01-10
dc.date.adate2012-01-10en_US


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