Calibration of hazard detection sensitivity based on occupancy in a control zone

Patent metadata

Field	Value
Publication number	US-10529223-B2
Application number	US-201816142880-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	May 17, 2018
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

Disclosed is an alarm device for detecting a hazard in a control zone, the alarm device having: a hazard sensor that comprises a configurable sensitivity level and a device controller that controls the sensitivity level of the hazard sensor, wherein the alarm device: receives over an electronic network a target sensitivity, and calibrates the hazard sensor to achieve the target sensitivity level.

First claim

What is claimed is:

1. A system for detecting hazards in a control zone, the system including:
an alarm device for detecting a hazard in a control zone, the alarm device comprising:
a hazard sensor that comprises a configurable sensitivity level and a device controller that controls the sensitivity level of the hazard sensor,
wherein the alarm device receives over an electronic network a target sensitivity, and calibrates the hazard sensor to achieve the target sensitivity level;
wherein the hazard sensor is a first hazard sensor of a plurality of hazard sensors within the alarm device, each of the plurality of hazard sensors comprising a configurable sensitivity level, wherein the alarm device calibrates each of the plurality of hazard sensors to achieve the target sensitivity level; and
wherein the plurality of hazard sensors includes at least one of a heat sensor, a smoke sensor, a carbon monoxide sensor and a gas sensor;
the system including a system controller, wherein
the system controller determines the target sensitivity level for the control zone and communicates the target sensitivity level to the alarm device over the network;
the system controller determines the target sensitivity level based on occupancy in the control zone, and
the occupancy in the control zone is determined from one or more occupancy sensors in the control zone.

2. The system of claim 1 , wherein the one or more occupancy sensors include one or more of a motion sensing camera, a passive infrared sensor and a thermal imaging camera.

3. The system of claim 1 , wherein the occupancy in the control zone is determined based on electronic occupancy records.

4. The system of claim 3 wherein the electronic occupancy records include one or more of an access management system and a synchronized scheduling calendar.

5. The system of claim 4 wherein the alarm device is a first alarm device of a plurality of alarm devices, the plurality of alarm devices being disposed in a plurality of zones, wherein each of the plurality of alarm devices is set to a different target sensitivity.

6. A method for detecting hazards in a control zone with a hazard detection system, wherein the system includes a system controller and an alarm device in the control zone, the alarm device comprising a hazard sensor that comprises a configurable sensitivity level and a device controller that controls the sensitivity level of the hazard sensor,
wherein the method comprises the alarm device receiving over an electronic network a target sensitivity; and calibrating the hazard sensor to achieve the target sensitivity level;
wherein the hazard sensor is a first hazard sensor of a plurality of hazard sensors within the alarm device, each of the plurality of hazard sensors comprising a configurable sensitivity level, wherein the alarm device calibrates each of the plurality of hazard sensors to achieve the target sensitivity level, the plurality of hazard sensors includes at least one of a heat sensor, a smoke sensor, a carbon monoxide sensor and a gas sensor;
wherein the method further comprises the system controller determining the target sensitivity level for the control zone and communicates the target sensitivity level to the alarm device over the network,
wherein the system controller determines the target sensitivity level based on occupancy in the control zone; and
wherein the occupancy in the control zone is determined from one or more occupancy sensors in the control zone.

7. The method of claim 6 , wherein the one or more occupancy sensors include one or more of a motion sensing camera, a passive infrared sensor and a thermal imaging camera.

8. The method of claim 6 , wherein the occupancy in the control zone is determined based on electronic occupancy records.

9. The method of claim 8 wherein the electronic occupancy records include one or more of an access management system and a synchronized scheduling calendar.

10. The method of claim 9 wherein the alarm device is a first alarm device of a plurality of alarm devices, the plurality of alarm devices being disposed in a plurality of zones, wherein each of the plurality of alarm devices is set to a different target sensitivity.

Assignees

• Carrier Corp

Inventors

• Kalagani Ramana Babu
• Kybarshi Eranna

Classifications

• G08B29/24 Primary

  Self-calibration, e.g. compensating for environmental drift or ageing of components · CPC title

• G08B17/00

  Fire alarms; Alarms responsive to explosion · CPC title

• G08B21/12

  responsive to undesired emission of substances, e.g. pollution alarms · CPC title

• G08B29/26 Primary

  by updating and storing reference thresholds · CPC title