| Download | - View accepted manuscript: Factors affecting the performance of ceiling-based PIR occupancy sensors in offices (PDF, 611 KiB)
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| Author | Search for: Newsham, Guy R.1; Search for: Xue, Henry1; Search for: Valdes, Julio J.1; Search for: Scarlett, Elizabeth1; Search for: Arsenault, Chantal1; Search for: Burns, Greg J.2; Search for: Kruithof, Steve1; Search for: Shen, Weiming1 |
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| Affiliation | - National Research Council of Canada. Construction
- National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Conference | Illuminating Engineering Society of North America (IESNA) Annual Conference, November 8th-10th, 2015, Indianapolis, USA |
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| Abstract | As part of a larger project on occupancy sensing, we collected 5 Hz occupancy detection data (aggregated to the 15-second level) from a commercially-available ceiling-based PIR sensor. Identical sensors were deployed in 28 offices for up to a month per office. Ground truth data were collected simultaneously using a pressure-sensitive floor mat. We evaluated the accuracy (overall, as well as false positives and false negatives) and energy-saving potential in each office with various timeout periods applied post-hoc. The data revealed relatively poor overall detection performance at the 15-second level. Adding a timeout period of 20 minutes produced reasonable false negative performance for the top quartile of offices, but reduced potential energy savings to 65% of the unoccupied time. The results support efforts to improve occupancy sensing in order to garner greater energy savings. |
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| Publication date | 2015-11-09 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277092 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1e9c0cba-32c2-445e-96f1-609dc39b9b9c |
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| Record created | 2015-11-24 |
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| Record modified | 2020-06-04 |
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