Patent ID: 11935390
Assignee: CARRIER CORPORATION
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fire detection system for monitoring a monitored environment, the system comprising:
a smoke detector configured to determine a concentration of smoke in a sample of air from the monitored environment;
a gas sensor configured to determine a concentration of a predetermined gas in the sample of air, wherein the predetermined gas is one of carbon monoxide, carbon dioxide, nitrogen dioxide and sulphur dioxide; and
a control module in communication with the smoke detector and the gas sensor,
the control module being configured to identify a source of the smoke based on the concentration of smoke and the concentration of the predetermined gas;
wherein the source of the smoke is identified to be a non-fire source when the concentration of the predetermined gas in the sample of air is below a first threshold;
wherein the source of the smoke is identified to be a fire source when the concentration of the predetermined gas in the sample of air exceeds the first threshold;
wherein the control module is configured to compare the concentration of smoke and the concentration of the predetermined gas to predetermined concentrations associated with a plurality of known fire sources; and
wherein the control module is configured to identify one of the plurality of known fire sources as the source of the smoke based on the comparison.