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Germicidal UV occupational exposure personal monitoring.

Havey GD

NIOSH 2003 Jan; :1-14

20023708

Advanced Medical Electronics Corporation has successfully completed all of the objectives of this phase I project and has proven the feasibility of constructing a unique ultraviolet personal monitoring device, where the primary unique quality of the system is its ability to make remote measurements in close proximity to the human eye. The key technical nugget in such a system is the development of a sensor suitable for miniaturization and remote location on the subject's body. The approach we proposed to solve this key technical issue involved the creation of a specialized AIGaN based III-V material amplified sensor with a cutoff at 250 nm. With this cut off an optical filter would not be needed. Such a sensor does not exist and we consumed the bulk of the project resources developing one. Although we were able to fabricate and test the sensor we have difficulties successfully packaging the sensor with an amplifier IC in on 0.25" x 0.25" package with the time and funding of the phase I. Given more time and funds this packaging problem could be solved. For the phase I to continue with its other objectives we implement a co-located discrete amplifier approach in the prototype system. This made the initial prototype sensor a bit bulky. But ultimately we believe the developed sensor is a very good solution for the proposed application. A wearable recorder was developed that could collect data from multiple sensors worn on the body. The Harvard School of Public Health evaluated the sensors and recorder. The result of the testing showed that the AIGaN based III-V material amplified sensor with a cutoff at 250 nm was capable of resolution of 0.1 micro Watt/sq cm needed for monitoring the AME, and its partners.

Occupational exposure; Exposure assessment; Infectious diseases; Monitors; Monitoring systems; Detectors; Aerosols

Advanced Medical Electronics Corporation, 6901 East Fish Lake Rd, #190, Maple Grove, MN 55369

20030131

Final Grant Report

100000

Grant

2003

Grant-Number-R43-OH-007478

OEP

Research Tools and Approaches; Exposure Assessment Methods

National Institute for Occupational Safety and Health

MN

Advanced Mecical Electronics Corporation, Maple Grove, MN 55359