Carrier Corporation

Kidde Technologies Incorporated

Kidde Fire Protection Limited

Hamilton Sundstrand Corporation

Peter R Harris

Michael J Birnkrant

Jennifer M Alexander

David L Lincoln

Marcin Piech

Antonio M Vincitore

Jie Xi

Hui Fang

Wayde R Schmidt

Yanzhi Chen

Michael T Gorski

Jose L Santana

Kenneth Bell

Joseph V Mantese

Alan Matthew Finn

Sameh Dardona

Rhonda R Willigan

Stefan Coreth

Abhay Nadgir

Zissis A Dardas

Suman Dwari

Rajiv Ranjan

May L Corn

Anis Zribi

Arthur Blanc

Mohammed Ateeq

Jagadeswara Reddy Karra

Hector Ortiz Valencia

Joseph William Ciol

Jennifer Alexander

Peter R Bushnell

Jun Hou

Vijaya Ramaraju Lakamraju

Kenneth J Mott

Slade R Culp

John J Andres

Dustin D Caldwell

Yan Zhang

Jose-Rodrigo Castillo-Garza

Vivek Venugopalan

Joseph Anthony Vidulich

Paul Schatz

TianYuan Chen

JunYang Lin

Daniel Asselin

Barry Stahl

Ahmed Hasan

Lester J Grace

Nai-Yuan Chiang

A smoke alarm includes a housing having a generally hollow interior, a printed circuit board arranged within the interior of the housing, and an optical chamber assembly connected to the printed circuit board. The optical chamber assembly has an interior chamber and at least one smoke entry location. A substantial entirety of the interior chamber is external to the housing. At least one light device for evaluating particles is arranged within an interior chamber of the optical chamber assembly.

Smoke alarm with offset detection chamber and shield

A method for manufacturing a detector for sensing, detecting and monitoring environmental hazards and conditions, said method including the printing of an electronic circuit on at least a first side of a flexible, printable substrate; coupling at least two electronic components to the electronic circuit on at least the first side of the flexible, printable substrate; thermoforming the flexible, printable substrate to form at least one detection zone from: (i) at least one side of the flexible, printable substrate having an angle for emitting one of a light or a signal from at least one electronic component; and (ii); at least one side of the flexible, printable substrate having an angle for receiving one of a light or a signal by at least one electronic component; and encapsulating the flexible, printable substrate, forming a detector.

Method for manufacturing a detector

A smoke detector is provided and includes a housing defining a chamber for receiving ambient materials, a single receiver, first and second emitters configured to emit light into the chamber to be respectively scattered from the ambient materials toward the single receiver with back scatter and forward scatter effects, respectively, and a controller. The single receiver generates first and second output signals in accordance with the light respectively scattered toward the single receiver with the back and forward scatter effects, respectively. The controller is receptive of the first and second output signals and determines whether a condition is appropriate to trigger an alarm.

Single-wave multi-angle smoke alarm algorithm

A fire suppression system has a plurality of tank units () each having: a tank body having a first port and an interior for storing at least one of fire suppressant and driver gas; a discharge assembly mounted to the first port and comprising: a discharge valve (); and a first monitoring switch or sensor (). A first monitoring unit () is coupled to the first monitoring switch or sensor of each said tank unit and configured to communicate with a remote monitoring location. For each of the tank units there is: a second monitoring switch or sensor (); and a second monitoring unit () coupled to said second monitoring switch or sensor and configured to communicate with the remote monitoring location.

Fire suppression system remote monitoring

A photoacoustic detection system includes a detector that has a chamber, a pulsed light source, piezoelectric tuning forks, and a photosensor. The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.

Photoacoustic detection system with differential amplifier for determing target species presence and triggering fault

A scanner of an optical detection system includes a housing, an optical surface coupled to the housing, and an actuator coupled to the optical surface. The optical surface is movable to direct light into an area being scanned and to receive a reflected light pulse from the area being scanned. The actuator is operable to agitate the optical surface to remove debris from the optical surface.

Vibration based actuator system for cleaning of optical surface

A detection system includes a central manifold including a detection chamber, a pipe network including at least one pipe fluidly coupled to the central manifold, a plurality of inlets formed over a length of the at least one pipe and an aspirating mechanism operable to draw a fluid flow at each of the plurality of inlets through the pipe network to the central manifold. A plurality of independently operable flow control devices is associated with the plurality of inlets. At least one of the plurality of flow control devices includes a solid state flexible polymer deformable in response to application of a voltage.

Electroactive actuators as sampling port valves for aspirating contaminant detection

A method of measuring one or more conditions within a predetermined area includes receiving at a control system a signal including scattered light and time of flight information associated with a plurality of nodes of a detection system, parsing the time of flight information into zones of the detection system, identifying one or more features within the scattered light signal, and analyzing the one or more features within the scattered light signal to determine a presence of the one or more conditions within the predetermined area.

High sensitivity fiber optic based detection

An example screening system includes a plurality of detectors about a screening area. Each detector includes a sensor configured to detect information from one or more objects moving along a path from an entrance to an exit of the screening area. The plurality of detectors include a first detector configured to detect information from a first location of the path, and a second detector configured to detect information from a second location of the path. The second detector is configured to adapt its functionality based on a finding of the first detector for a given one of the one or more objects.

Screening system

A covered chamberless particulate detector includes a chamberless detector configured to produce a signal when particulate sensing events occurs, one or more optical emitters configured to emit one or more emitting cones of light, one or more optical sensors defining one or more receiving cones and configured to detect occurrence of particulate sensing events, and a protective cover defining an inside region and an outside region. Each of the one or more emitting cones of light is configured to overlap with each of the one or more receiving cones, thereby creating one or more sensing volumes which may be in the inside region, the outside region, or both regions. The protective cover can be transparent, partially transparent, or opaque, and can include apertures. The optical emitters and detectors can use one or more wavelengths, allowing discrimination of various airborne particulates.

Protective cover for chamberless point sensor

A photoacoustic detection system () includes a detector () that has a chamber (), a pulsed light source (), piezoelectric tuning forks (), and a photosensor (). The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller () is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.

Photoacoustic detection system with clocked tuning fork positions

A system for measuring a status of a detection device having a component transformable between a plurality of configurations includes a fiber optic cable for transmitting light. The at least one fiber optic cable defines a node arranged in communication with the component. A control system is operably coupled to the fiber optic cable such that scattered light reflected from the component and returned to the node is transmitted to the control system. The control system analyzes the scattered light to determine the configuration of the component.

Explosion proof fiber optic based detection

An aircraft pressurized air system and method is disclosed. The system includes a compressor that receives and compresses outside air, and an air cycle machine that receives compressed air from the compressor and directs conditioned air to an aircraft pressurized zone. The system also includes a contaminant sensor disposed along an air flow path between the compressor and the aircraft pressurized zone, comprising an optical guide, a metal organic framework on an exterior surface of the optical guide in operative fluid communication with air from the air flow path, a light source in communication with the optical guide at a first end of the optical guide, and a light detector in communication with the optical guide at a second end of the optical guide.

Aircraft air supply and contaminant detection system

A method of operating a detection system includes switching the system from a normal mode for sensing smoke to a high sensitivity mode for sensing airborne particles, such that in the high sensitivity mode the detection system is configured to discriminate between particles of diameters less than 2.5 micrometers and 10 micrometers. Transmitting light from one or more light sources of the detection system into a monitored space, and detecting scattered light at one or more light sensing devices of the detection system. The detection of scattered light is indicative of one or more indoor air quality conditions in the monitored space.

Chamberless smoke detector with indoor air quality detection and monitoring

Growing community of inventors

West Hartford, CT, United States of America

Peter R Harris