# Monitoring Indoor People Presence in Buildings Using Low-Cost Infrared Sensor Array in Doorways

> Research article (Sensors, 2021) · cited 43× · AI/ML

**Wikidata**: [openalex:W3171635128](https://www.wikidata.org/wiki/openalex:W3171635128)  
**Source**: https://4ort.xyz/entity/monitoring-indoor-people-presence-in-buildings-using-low-cost-infrared-sensor-array-in-doorways