公开(公告)号：US11087605B2

公开(公告)日：2021-08-10

申请号：US16310622

申请日：2017-06-15

Applicant: Carrier Corporation

Inventor： Hui Fang ,  Jie Xi ,  Peter R. Harris ,  Vivek Venugopalan ,  David L. Lincoln

IPC: G08B17/107 ,  G01N21/53 ,  G08B17/113 ,  G08B21/18

Abstract: A system and method of detecting smoke including establishing a baseline measurement for each of at least three overlapping sensing volumes; comparing a measured reading within each of the at least three sensing volumes and the baseline measurements to determine whether the measured reading is within a sensing threshold, and annunciating a warning signal if the difference is outside the sensing threshold.

公开(公告)号：US11988602B2

公开(公告)日：2024-05-21

申请号：US17054300

申请日：2019-05-10

Applicant: Carrier Corporation

Inventor： David L. Lincoln ,  Michael J. Birnkrant ,  Jose-Rodrigo Castillo-Garza ,  Marcin Piech ,  Catherine Thibaud ,  Michael J. Giering ,  Kishore K. Reddy ,  Vivek Venugopalan

IPC: G01N21/552 ,  G01N27/12 ,  G01N29/036 ,  G01N33/00

CPC classification number: G01N21/553 ,  G01N27/125 ,  G01N29/036 ,  G01N33/0034 ,  G01N2201/1296 ,  G01N2291/0256

Abstract: An example SPR detection system includes a first prism having a first surface adjacent to a first metal layer exposed to a sample gas, and a second prism having a second surface adjacent to a second metal layer exposed to a reference gas. At least one light source is configured to provide respective beams to the first and second surfaces, where each of the beams causes SPR of a respective one of the metal layers. At least one photodetector is configured to measure a reflection property of reflections of the respective beams from the metal layers during the SPR. A controller is configured to determine whether a target gas is present in the sample gas based on a known composition of the reference gas and at least one of an electrical property of the first and second metal layers during the SPR and the reflection property of the metal layers.

公开(公告)号：US20190251816A1

公开(公告)日：2019-08-15

申请号：US16310622

申请日：2017-06-15

Applicant: Carrier Corporation

Inventor： Hui Fang ,  Jie Xi ,  Peter R. Harris ,  Vivek Venugopalan ,  David L. Lincoln

IPC: G08B17/107 ,  G01N21/53 ,  G08B17/113

CPC classification number: G08B17/107 ,  G01N21/53 ,  G01N2201/062 ,  G08B17/113 ,  G08B21/182

Abstract: A system and method of detecting smoke including establishing a baseline measurement for each of at least three over-lapping sensing volumes; comparing a measured reading within each of the at least three sensing volumes and the baseline measurements to determine whether the measured reading is within a sensing threshold, and annunciating a warning signal if the difference is outside the sensing threshold.

公开(公告)号：US20210208068A1

公开(公告)日：2021-07-08

申请号：US17054300

申请日：2019-05-10

Applicant: Carrier Corporation

Inventor： David L. Lincoln ,  Michael J. Birnkrant ,  Jose-Rodrigo Castillo-Garza ,  Marcin Piech ,  Catherine Thibaud ,  Michael J. Giering ,  Kishore K. Reddy ,  Vivek Venugopalan

IPC: G01N21/552 ,  G01N27/12 ,  G01N29/036 ,  G01N33/00

Abstract: An example SPR detection system includes a first prism having a first surface adjacent to a first metal layer exposed to a sample gas, and a second prism having a second surface adjacent to a second metal layer exposed to a reference gas. At least one light source is configured to provide respective beams to the first and second surfaces, where each of the beams causes SPR of a respective one of the metal layers. At least one photodetector is configured to measure a reflection property of reflections of the respective beams from the metal layers during the SPR. A controller is configured to determine whether a target gas is present in the sample gas based on a known composition of the reference gas and at least one of an electrical property of the first and second metal layers during the SPR and the reflection property of the metal layers.