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

Tomokazu Tachikawa, Hiroaki Nishi

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)355-362
Number of pages8
JournalJournal of Environmental Engineering
Volume75
Issue number650
DOIs
Publication statusPublished - 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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