基于智能手机的照度测量准确度评价与优化——以安卓系统的三款智能手机为例

Evaluation and Correction of Illumination Measurement Accuracy Based on Smart Phone——Take three Android Smart Phones as Examples

为探究影响智能手机照度计测量结果准确度的因素,提高智能手机照度计测量结果准确度,通过对比照度计同三款常用智能手机、五款常用照度APP在测量结果上的差异,对不同手机、不同APP测量照度的准确度作出评价,得出适用范围,并尝试提出优化路径。研究表明:智能手机APP测量照度的准确度主要与光传感器有关;智能手机照度计在30~2000 lx范围内的测量结果较为准确;通过校正曲线,可有效提高智能手机照度计测量结果的准确度。因此,可以从光传感器性能提升和在APP中整合误差修正函数两个方面来进行优化。研究结果为提高智能手机照度计测量结果准确度提供了有效的优化路径,同时为生产生活中利用智能手机获取准确的照度值提供了便利。

To explore the factors affecting the smartphone measurement accuracy of its illuminance meter for improvement,five common illumination APPs with three common smart phones were compared with a illuminace meter on the measurement results.The measurement accuracy was evaluated with different phones and different APPs to achieve applicable scope and come up with optimization path.The research shows that the accuracy of illumination measurement by smart phone APP is mainly related to the light sensor.The measurement in the range of 30~2000 lx would get relatively accurate results.The calibration curve can effectively improve the accuracy of smart phone illuminometer measurement results.Therefore,optimization can be carried out from two aspects of improving the performance of the optical sensor and integrating the error correction function in the APP.The research results provide an effective optimization path for improving the accuracy of smart phone illuminance meter measurement results,and provide convenience for using smart phone to obtain accurate illuminance value in production and life.