Accuracy Comparison of Present Low-cost Current Sensors for Building Energy Monitoring

Ruengwit Khwanrit, S. Kittipiyakul, Jasada Kudtonagngam, H. Fujita
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引用次数: 15

Abstract

Reducing energy consumption in building is an important motivation for building energy monitoring and management system. In this work we focus on AC current measurement for small to large appliances such as air conditioners. Today's market has many low-cost AC current sensors that use different technologies and come with different usage convenience. This paper aims to compare AC current measurement accuracy for four low-cost current sensors in nowadays market. They are ACS712, WCS1800, SCT013, and PZEM004T. We also discuss about their price and difficulty of installation. We use ESP32 wifi-microcontroller to process measurements. We perform the test using AC loads in small steps from zero up to 20 A. Our results show that PZEM004T gives the best performance among these sensors. However, ACS712 is the best value current sensor because of its low price and performance, although it is more difficult on installation.
当前低成本建筑能源监测电流传感器的精度比较
降低建筑能耗是建筑能源监测与管理系统的重要动力。在这项工作中,我们专注于小型到大型电器(如空调)的交流电流测量。当今市场上有许多低成本的交流电流传感器,它们采用不同的技术,具有不同的使用方便。本文旨在比较目前市场上四种低成本电流传感器的交流电流测量精度。它们是ACS712, WCS1800, SCT013和PZEM004T。我们还讨论了它们的价格和安装难度。我们使用ESP32 wifi微控制器来处理测量。我们使用交流负载进行测试,从0到20 A的小步骤。结果表明,PZEM004T在这些传感器中具有最佳的性能。然而,ACS712是最有价值的电流传感器,因为它的价格和性能较低,尽管它的安装难度较大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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