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1. (WO2018121999) ENERGY MEASUREMENT DEVICE

Pub. No.:    WO/2018/121999    International Application No.:    PCT/EP2017/082836
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Dec 15 00:59:59 CET 2017
IPC: G05B 15/02
G06Q 50/06
Applicants: PHILIPS LIGHTING HOLDING B.V.
Inventors: PANDHARIPANDE, Ashish, Vijay
Title: ENERGY MEASUREMENT DEVICE
Abstract:
An energy measurement device (100) for a building automation system (170) is provided. The energy measurement device computes an average energy use per class for a first sequence (142) of energy measurements by averaging energy use measurements falling in the same class, and compute an average energy use per class for a second sequence (162) of energy measurements by averaging energy use measurements falling in the same class, compute a duration per class for the first sequence (144) by adding the duration of the shorter period in the first time-period assigned to the class, and computing a difference between the inner product of the average energy use per class for the first sequence and the duration per class for the first sequence and the inner product of the average energy use per class for the second sequence and the duration per class for the first sequence.