Estimation method of the number of people in a room by using environmental sensors

Tomokazu Tachikawa; Hiroaki Nishi

doi:10.3130/aije.75.355

Estimation method of the number of people in a room by using environmental sensors

Tomokazu Tachikawa, Hiroaki Nishi

Department of System Design Engineering

Research output: Contribution to journal › Article

Abstract

The estimation of the number of people is useful for various situations. In this paper, hybrid estimation method of the number of people in a room is proposed. This estimation method is achieved by using CO₂ sensor and motion sensor. Adaptive adjusting method of hold time for motion sensor is also proposed for its self-calibration. Proposed method was implemented on an energy management system and evaluated in a classroom environment. This evaluation proves that proposed method can improve the precision from 0.9 in the previous method to 0.4 in the proposed method at the number of people.

Original language	English
Pages (from-to)	355-362
Number of pages	8
Journal	Journal of Environmental Engineering
Volume	75
Issue number	650
DOIs	https://doi.org/10.3130/aije.75.355
Publication status	Published - 2010 Apr 1

Keywords

CO concentration sensor
Energy management system
Estimation method of the number of people
Motion sensor

ASJC Scopus subject areas

Environmental Engineering

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