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 |
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Pages (from-to) | 355-362 |
Number of pages | 8 |
Journal | Journal of Environmental Engineering |
Volume | 75 |
Issue number | 650 |
DOIs | |
Publication status | Published - 2010 Apr |
Keywords
- CO concentration sensor
- Energy management system
- Estimation method of the number of people
- Motion sensor
ASJC Scopus subject areas
- Environmental Engineering