• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Leukos >Comparison and Correction of the Light Sensor Output from 48 Wearable Light Exposure Devices by Using a Side-by-Side Field Calibration Method
【24h】

Comparison and Correction of the Light Sensor Output from 48 Wearable Light Exposure Devices by Using a Side-by-Side Field Calibration Method

机译：使用并排场校准方法对48种可穿戴式曝光设备的光传感器输出进行比较和校正

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Measurement of personal light exposures and activity has gained popularity in studies of the circadian rhythm and its effects on human health. Calibration of a batch of measuring devices may be needed, especially before initiating interventional studies, but manufactory calibration of devices before every initiated study is costly for the researcher and therefore often left out. Still, knowledge of inter-equipment variability is essential and seldom provided by the manufactory. The aim of the present study was to develop and test a method for field calibration of Actiwatch Spectrum devices. We tested 48 Actiwatch devices side by side under various light sources and present the red, green, blue, and white light response variability among the Actiwatches. The influence of different spatial and spectral light environments on the white light response when compared with the output from a calibrated photometer is discussed. In agreement with previous studies by Price and others [2012] and Figueiro and others [2013], we confirm the devices' white light responses to be highly dependent on both the spatial and the spectral composition of the light. The white light response represents photopic illuminance only to a minor degree and light source-specific calibration may therefore be needed in some cases. Moreover, light responses were found to vary between devices by up to 60%. Implications are that the results of light effects on health issues in studies using Actiwatches are blurred by the equipment variability. To compensate for inter-equipment variability we stress the need for a field calibration procedure. When light exposure devices of lower grade quality are used in spectrally and spatially changing light environments, daylight from a diffused overcast sky is suggested to be used for side-by-side calibration of Actiwatches and similar personal light exposure devices. We suggest that the calibration methods presented can be used for calibration of other practical field devices, with respect to the various sensors already on the market and devices that will be introduced in the future.
机译：在昼夜节律及其对人体健康的影响研究中，个人光照和活动的测量已得到普及。可能需要校准一批测量设备，特别是在启动介入研究之前，但是在每次启动研究之前对设备进行工厂校准对于研究人员来说是昂贵的，因此经常被忽略。但是，设备间可变性的知识是必不可少的，制造商很少提供。本研究的目的是开发和测试Actiwatch Spectrum设备的现场校准方法。我们在各种光源下并排测试了48个Actiwatch设备，并展示了Actiwatches之间的红色，绿色，蓝色和白色光响应变化。与来自校准光度计的输出相比，讨论了不同空间和光谱光环境对白光响应的影响。与Price等人[2012]和Figueiro等人[2013]的先前研究一致，我们确认设备的白光响应高度依赖于光的空间和光谱组成。白光响应仅在很小的程度上代表了明视照度，因此在某些情况下可能需要特定于光源的校准。此外，发现设备之间的光响应差异高达60％。这意味着使用Actiwatches进行的研究对健康问题的光影响结果因设备的可变性而变得模糊。为了补偿设备间的差异，我们强调需要现场校准程序。当在光谱和空间变化的光照环境中使用较低质量的曝光设备时，建议将漫射的阴天的日光用于Actiwatch和类似的个人曝光设备的并排校准。我们建议，相对于市场上已经存在的各种传感器以及将来将要推出的设备，提出的校准方法可用于其他实际现场设备的校准。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号