Non-intrusive Household Appliances Management

DOI

10.2991/icem-17.2018.99How to use a DOI?

Keywords

Centrifugal fan; STM32F407IGT6; Corrosion system board; Inspecting power; FFT algorithm; AD sampling

Abstract

The single-phase electric appliance analysis and detection device are divided into signal sampling, signal amplification and AD conversion. The system takes analog circuit as the main body, and takes digital circuit as the auxiliary, realizing precise control through STM32F4.And transforms the low voltage signal into the input through the voltage transformer and the current transformer through the front stage.The input signal is low-pass filtered and two-stage amplified by using the OPA2277A chip.We use the ADC channel ADR421AR 8-channel ADC, synchronized to capture the amplified voltage signal. We calculate the apparent power, active power and reactive power to find the power factor.We construct a binary tree based on the power factor and various powers. At the same time, we classify appliances by reading and matching feature arrays. Then, we compare the previous steady-state and the steady-state feature arrays and subtract them to get the feature array of the increased and decreased electrical devices. Finally, we determine the type of electrical devices by performing the feature matching.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Sen Jing
AU  - Zhonglin Luo
PY  - 2018/01
DA  - 2018/01
TI  - Non-intrusive Household Appliances Management
BT  - Proceedings of the 2017 7th International Conference on Education and Management (ICEM 2017)
PB  - Atlantis Press
SP  - 494
EP  - 497
SN  - 2352-5428
UR  - https://doi.org/10.2991/icem-17.2018.99
DO  - 10.2991/icem-17.2018.99
ID  - Jing2018/01
ER  -