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首页> 外文期刊>IEEE sensors journal >Wireless, Accumulation Mode Dosimeters for Monitoring Pulsed and Non-Pulsed Germicidal Lamps
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Wireless, Accumulation Mode Dosimeters for Monitoring Pulsed and Non-Pulsed Germicidal Lamps

机译：无线，累积模式剂量测量计用于监测脉冲和非脉冲杀菌灯

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Mitigating the spread of infectious diseases such as the one associated with the COVID-19 pandemic demands simple and effective disinfection techniques. Ultraviolet germicidal irradiation (UVGI) is one such method, in common use for decontamination of hospital rooms. Practical technologies designed to monitor UVGI ensure the delivery of sufficient doses for germicidal efficacy. Existing UVGI dosimeters rely on intermittent measurements of intensity as the basis for a numerical integration scheme that approximates dose. Traditional devices are ineffective, particularly with pulsed UVGI lamps that emit pulses of light with durations shorter than the interval of measurement. Here, we present a compact, accumulation mode dosimeter (AMD) that detects continuously, as opposed to intermittently, at single or multiple UVGI wavelengths. The AMD utilizes an array of photodiodes and supercapacitors to passively transduce and capture photocurrent generated by UVGI without the use of external power. The accumulated voltage across the supercapacitors then serves as a measure of UVGI dose. A key result is that sampling intervals of AMD do not constrain measurement accuracy. When implemented with a wireless transponder, AMD supports a light-adaptive sampling scheme designed to adjust the sampling interval to the intensity and period of UVGI exposure. Compared to time-based sampling schemes adopted by conventional sensors, light-adaptive approaches autonomously optimize battery life by minimizing current consumption during periods of low or no UVGI. Benchtop studies of the use of this technology with pulsed Xenon lamps (pulse similar to 5 ms) sampled at long intervals (>1s) highlight the key features of operation. Demonstration of AMD during UVGI of E. Coli cultures represents an example in dose dependent effects on disinfection.
机译：减轻传染病的传播，例如与Covid-19大流行相关的一种简单有效的消毒技术。紫外杀菌辐照（UVGI）是一种这种方法，用于净化医院房间的净化。设计用于监测UVGI的实用技术确保为杀菌效果提供足够的剂量。现有的UVGI剂量计依赖于强度的间歇测量作为近似剂量的数值积分方案的基础。传统设备无效，特别是脉冲UVGI灯，其发射与比​​测量间隔短的持续时间的光脉冲。这里，我们提出了一种紧凑的累积模式剂量计（AMD），其连续地检测，而不是间歇地，在单个或多个UVGI波长处相反。 AMD利用了一系列光电二极管和超级电容器来被动地传播和捕获由UVGI产生的光电流而不使用外部电力。然后，超级电容器两端的累积电压用作UVGI剂量的量度。一个关键结果是AMD的采样间隔不约束测量精度。当用无线转发器实现时，AMD支持光自适应采样方案，该方案旨在将采样间隔调整为UVGI曝光的强度和时段。与传统传感器采用的基于时间的采样方案相比，光自适应方法通过最小化低或没有UVGI期间的电流消耗来自主优化电池寿命。长期以来采样使用脉冲氙灯（脉冲相似的脉冲氙灯（> 1s）采样使用该技术的Benchtop研究突出了操作的关键特征。大肠杆菌培养物UVGI期间AMD的示范代表了剂量依赖性对消毒作用的一个例子。

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