Systems and methods for chamberless smoke detection and indoor air quality monitoring
AssigneeKidde Technologies, Inc.
InventorsDavid L. Lincoln, Jennifer M. Alexander, Michael J. Birnkrant, Peter R. Harris
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Abstract
A system for particulate detection and monitoring includes one or more light sources configured to emit light into a monitored space. The system includes at least two light sensing devices configured to receive scattered light. Respective sensing portions of the three two sensing devices share a common centerline axis. A processor is operatively connected to the two light sensing devices and is configured to evaluate the scattered light for presence of particulates in the monitored space.
Claims17
A system for smoke particulate detection and monitoring, comprising:
- two or more light sources configured to emit light into a monitored space;
- at least three light sensing devices configured to receive scattered light, wherein respective sensing portions of the three light sensing devices share a common centerline axis and wherein each light source is an equal distance from the common centerline axis;
- and
- a processor operatively connected to the at least three light sensing devices to evaluate the scattered light for presence of particulates in the monitored space.
A system for smoke particulate detection and monitoring and indoor air quality monitoring, comprising:
- two or more light sources configured to emit light into a monitored space, wherein at least two one of the two or more light sources is configured to emit a respective light cones cone each having a respective symmetry axis;
- and
- three or more light sensing devices configured to receive scattered light, wherein at least one of the three or more light sensing devices defines a respective acceptance cone having a respective acceptance cone axis, wherein the respective symmetry axis of the light cone intersects the respective acceptance cone axis of the acceptance cone as viewed from a bottom side of a detector housing wherein the three light sensing devices share a common centerline axis and each light source is an equal distance from the common centerline axis;
- and
- a processor operatively connected to the three light sensing devices to evaluate the scattered light for the presence of one or more particulates in the monitored space.
A method of operating a system for particulate detection and monitoring, comprising:
- emitting light from two or more light sources of the system for particulate detection and monitoring into a monitored space;
- and
- detecting scattered light with at least three light sensing devices of the system for smoke particulate detection and monitoring, wherein the three light sensing devices share a common centerline axis and each light source is an equal distance from the common centerline axis, and wherein the detection of scattered light is indicative of one or more particulates in the monitored space.
Dependencies are inferred from the claim text.