Carrier Corporation

Utc Fire and Security Corporation

Theodore Hermann

Jamie Rhead

Anand Venkatesh Sankarraj

Dayne Plemmons

Benjamen D Baker

Bryan M Yarde

Bryan Yarde

An acoustic monitoring system for detecting a condition of an air filter, the acoustic monitoring system including: a first acoustic transducer upstream with respect to airflow over the air filter; a second acoustic transducer upstream with respect to airflow over the air filter; a third acoustic transducer downstream with respect to airflow over the air filter; a fourth acoustic transducer downstream with respect to airflow over the air filter; a control unit in communication with the first acoustic transducer, the second acoustic transducer, the third acoustic transducer and the fourth acoustic transducer; the control unit configured to determine a filter attenuation value in response to one or more SPL values measured by at least one of the first acoustic transducer, the second acoustic transducer, the third acoustic transducer and the fourth acoustic transducer.

Filter monitoring using differential acoustic attenuation

A flame or gas detection method includes determining non-imaging sensor system detection state for a scene of interest, determining an imaging sensor system detection state for the scene of interest, and validating one of the non-imaging sensor system detection state and the imaging sensor system detection state with the other of the non-imaging sensor system detection state and the imaging sensor system detection state. A flame or gas detecting system detection state is then indicated at a user interface including the validated one of the non-imaging sensor system detection state and the imaging system detection state. Flame or gas detection systems and computer program products are also described.

Systems and methods of detecting flame or gas

A flame detector system () includes a flame detector () and a plurality of targets (). The flame detector includes a housing (), a flame sensor (), an imaging device () having an optical view () that correlates to the field of view (), and a controller () in communication with the imaging device. The plurality of targets are disposed within the optical view. The controller is programmed to operate the imaging device to capture a first image of an external environment () containing the plurality of targets and store the first image and a location of the plurality of targets within the first image.

Method of optical alignment and verification of field of view integrity for a flame detector and system

A method for classifying an emission includes generating a first acoustic profile at a first acoustic sensor; generating a second acoustic profile at a second acoustic sensor; comparing the first acoustic profile to a first reference acoustic profile to generate a first difference; comparing the second acoustic profile to a second reference acoustic profile to generate a second difference; and classifying the emission as one of a hazardous emission or a non-hazardous emission in response to the first difference and the second difference.

Acoustic profile recognition for discriminating between hazardous emissions and non-hazardous emissions

A method of controlling a function of an acoustic detector includes storing a reference power spectrum of a reference acoustic signal, the reference power spectrum being associated with a mode of operation of the acoustic detector; receiving an acoustic sound signal, the acoustic sound signal including a tone and harmonic tones; generating a real-time acoustic power spectrum of the acoustic sound signal responsive to the receiving of the acoustic sound signal; and performing the mode of operation when a comparison of the real-time acoustic power spectrum with the reference acoustic power spectrum indicates that the acoustic sound signal is a control signal.

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Eden Praire, MN, United States of America

Theodore Hermann