کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
587524 | 878410 | 2010 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effectiveness of a worker-worn electric-field sensor to detect power-line proximity and electrical-contact Effectiveness of a worker-worn electric-field sensor to detect power-line proximity and electrical-contact](/preview/png/587524.png)
ProblemConstruction workers suffer the most electrocutions among all industries. Currently, there are no electrical contact warning devices on the market to protect workers. This paper proposes a worker-worn electric-field sensor. As the worker is in proximity to, or in contact with, a live power-circuit, the sensor sets off an audible/visual warning alarm. The sensor also has the potential to wirelessly trip a wireless-capable circuit breaker, and to trigger a wireless transmitter to notify emergency response of an electrical contact.MethodsAn experiment was conducted to measure electric-field variation on simulated human-wrists (10 defrosted hog-legs) in various proximities and in electrical-contact to a simulated power-circuit. The purpose of these tests was to determine the feasibility of developing a worker-worn electric-field detection sensor for use in protecting workers from contact with energized electrical conductors.ResultsThis study observed a significant electric-field-magnitude increase as a hog-leg approaches the live-circuit, and the distinct electric-field-magnitude jump as the leg contacts with the live-circuit. The observation indicates that this sensor can be an effective device to warn the workers of electrical hazards. Additionally, the sensor has the potential to wirelessly trip a wireless-capable circuit-breaker and trigger a wireless transmitter (such as a cell phone) to notify an emergency response. The prompt notification prevents the worker from further injury caused by postponed medical-care.Impact on IndustryWidespread use of this sensor could lower electrocution and electrically related injury rates in the construction industry.
Journal: Journal of Safety Research - Volume 41, Issue 3, June 2010, Pages 229–239