US 10,871,452 B2 · Systems and methods for chamberless smoke detection and indoor air quality monitoring

Abstract

A system for detection and monitoring includes one or more light sources configured to emit light into a monitored space. At least one of the light sources is configured to emit a respective emission cone having a respective emission cone axis. One or more light sensing devices are configured to receive scattered light. At least one of the one or more light sensing devices defines a respective acceptance cone having a respective acceptance cone axis. The emission cone axis of the emission cone, and/or the acceptance cone axis of the light sensing device is angled toward the other. A processor is operatively connected to the at least one light sensing devices to evaluate the scattered light for the presence of particulates in the monitored space.

Claims17

Dependent claims

A system for detection and monitoring, comprising:

two light sources defining a first axis each configured to emit light into a monitored space, wherein at least one of the light sources is configured to emit a respective emission cone having a respective emission cone axis;
three light sensing devices defining a second axis perpendicular to the first axis each configured to receive scattered light, wherein at least one of the light sensing devices defines a respective acceptance cone having a respective acceptance cone axis, wherein at least one of the emission cone axis of the emission cone or the acceptance cone axis of the light sensing device is angled toward the other;
and
a processor operatively connected to the at least one light sensing devices to evaluate the scattered light for presence of particulates in the monitored space.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/967,502Filed 30 Apr 2018 · continuation in part

Priority

15 Jun 2016

Published

US 2018/0224373 A16 Sep 2018

Granted

22 Dec 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

G01N 21/94
Investigating the presence of flaws or contamination: investigating contamination, e.g. dust
G01N 15/0205
Investigating particle size or size distribution: by optical means
G01N 21/53
Within a body or fluid: within a flowing fluid, e.g. smoke
G01N 21/8507
Investigating moving fluids or granular solids: probe photometers, i.e. with optical measuring part dipped into fluid sample

Family

Application62/350,418Us provisional application · filed 15 Jun 2016

Application62/515,039Us provisional application · filed 5 Jun 2017

Application62/517,614Us provisional application · filed 9 Jun 2017

PCT/US2017/037659Parent of this continuation-in-part · filed 15 Jun 2017

Application15/871,931Parent of this continuation-in-part · filed 15 Jan 2018

US 2018/0252654 A1Pre-grant publication · published 6 Sep 2018

US 10,852,233 B2Related patent

US 2018/0224373 A1Published application

US 10,871,452 B2This patent

From the US filing history. Foreign family members aren’t listed.

Systems and methods for chamberless smoke detection and indoor air quality monitoring

Life of this patent

Systems and methods for chamberless smoke detection and indoor air quality monitoring

Life of this patent

Abstract

Claims17