Division of Safety Research, National Institute for Occupational Safety and Health, USA.
J Safety Res. 2010 Jun;41(3):229-39. doi: 10.1016/j.jsr.2010.02.011. Epub 2010 Apr 21.
Construction 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.
An 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.
This 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.
Widespread use of this sensor could lower electrocution and electrically related injury rates in the construction industry.
建筑工人在所有行业中遭受电击的比例最高。目前，市场上没有电气接触警告装置来保护工人。本文提出了一种工人佩戴的电场传感器。当工人接近或接触到带电电路时，传感器会发出声音/视觉警告警报。该传感器还有可能无线跳闸无线功能电路断路器，并触发无线发射器，通知电气接触的紧急响应。
进行了一项实验，以测量模拟人手腕（10 个解冻的猪腿）在不同接近距离和与模拟电源电路接触时的电场变化。这些测试的目的是确定开发一种工人佩戴的电场检测传感器用于保护工人免受带电导体接触的可行性。
本研究观察到，随着猪腿接近带电电路，电场幅度显著增加，当腿接触带电电路时，电场幅度急剧增加。该观察表明，该传感器可以成为警告工人电气危险的有效装置。此外，该传感器有可能无线跳闸无线功能电路断路器并触发无线发射器（如手机）以通知紧急响应。及时通知可防止工人因延迟医疗而造成进一步伤害。
广泛使用这种传感器可以降低建筑行业的电击和与电气相关的伤害率。
