Unobtrusive occupancy and vital signs sensing for human building interactive systems
Abstract Cognitive buildings use data on how occupants respond to the built environment to proactively make occupant-centric adjustments to lighting, temperature, ventilation, and other environmental parameters. However, sensors that unobtrusively and ubiquitously measure occupant responses are lack...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-27425-6 |
| _version_ | 1797945877355036672 |
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| author | Chenyan Song Amy D. Droitcour Shekh M. M. Islam Avon Whitworth Victor M. Lubecke Olga Boric-Lubecke |
| author_facet | Chenyan Song Amy D. Droitcour Shekh M. M. Islam Avon Whitworth Victor M. Lubecke Olga Boric-Lubecke |
| author_sort | Chenyan Song |
| collection | DOAJ |
| description | Abstract Cognitive buildings use data on how occupants respond to the built environment to proactively make occupant-centric adjustments to lighting, temperature, ventilation, and other environmental parameters. However, sensors that unobtrusively and ubiquitously measure occupant responses are lacking. Here we show that Doppler-radar based sensors, which can sense small physiological motions, provide accurate occupancy detection and estimation of vital signs in challenging, realistic circumstances. Occupancy was differentiated from an empty room over 93% of the time in a 3.4 m × 8.5 m conference room with a single sensor in both wall and ceiling-mounted configurations. Occupancy was successfully detected while an occupant was under the table, visibly blocked from the sensor, a scenario where infrared, ultrasound, and video-based occupancy sensors would fail. Heart and respiratory rates were detected in all seats in the conference room with a single ceiling-mounted sensor. The occupancy sensor can be used to control HVAC and lighting with a short, 1–2 min delay and to provide information for space utilization optimization. Heart and respiratory rate sensing could provide additional feedback to future human-building interactive systems that use vital signs to determine how occupant comfort and wellness is changing with time. |
| first_indexed | 2024-04-10T21:03:10Z |
| format | Article |
| id | doaj.art-6385c17c883c4e25b73ef5812cf0acf8 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T21:03:10Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6385c17c883c4e25b73ef5812cf0acf82023-01-22T12:13:15ZengNature PortfolioScientific Reports2045-23222023-01-0113111210.1038/s41598-023-27425-6Unobtrusive occupancy and vital signs sensing for human building interactive systemsChenyan Song0Amy D. Droitcour1Shekh M. M. Islam2Avon Whitworth3Victor M. Lubecke4Olga Boric-Lubecke5Adnoviv, Inc.Adnoviv, Inc.Department of Electrical and Electronic Engineering, University of DhakaAdnoviv, Inc.Department of Electrical and Computer Engineering, University of Hawaii at ManoaDepartment of Electrical and Computer Engineering, University of Hawaii at ManoaAbstract Cognitive buildings use data on how occupants respond to the built environment to proactively make occupant-centric adjustments to lighting, temperature, ventilation, and other environmental parameters. However, sensors that unobtrusively and ubiquitously measure occupant responses are lacking. Here we show that Doppler-radar based sensors, which can sense small physiological motions, provide accurate occupancy detection and estimation of vital signs in challenging, realistic circumstances. Occupancy was differentiated from an empty room over 93% of the time in a 3.4 m × 8.5 m conference room with a single sensor in both wall and ceiling-mounted configurations. Occupancy was successfully detected while an occupant was under the table, visibly blocked from the sensor, a scenario where infrared, ultrasound, and video-based occupancy sensors would fail. Heart and respiratory rates were detected in all seats in the conference room with a single ceiling-mounted sensor. The occupancy sensor can be used to control HVAC and lighting with a short, 1–2 min delay and to provide information for space utilization optimization. Heart and respiratory rate sensing could provide additional feedback to future human-building interactive systems that use vital signs to determine how occupant comfort and wellness is changing with time.https://doi.org/10.1038/s41598-023-27425-6 |
| spellingShingle | Chenyan Song Amy D. Droitcour Shekh M. M. Islam Avon Whitworth Victor M. Lubecke Olga Boric-Lubecke Unobtrusive occupancy and vital signs sensing for human building interactive systems Scientific Reports |
| title | Unobtrusive occupancy and vital signs sensing for human building interactive systems |
| title_full | Unobtrusive occupancy and vital signs sensing for human building interactive systems |
| title_fullStr | Unobtrusive occupancy and vital signs sensing for human building interactive systems |
| title_full_unstemmed | Unobtrusive occupancy and vital signs sensing for human building interactive systems |
| title_short | Unobtrusive occupancy and vital signs sensing for human building interactive systems |
| title_sort | unobtrusive occupancy and vital signs sensing for human building interactive systems |
| url | https://doi.org/10.1038/s41598-023-27425-6 |
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