US 12,037,220 B1Granted

Systems for monitoring smoke and heat in elevator hoistways

AssigneeThe ADT Security Corporation

InventorsMartin Smith, Ryan Sandler, Jeffrey Smith

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Abstract

An integrated monitoring panel for an elevator hoistway fire detection system is provided. The system includes a power supply, fault indicators for power and smoke detection, and alarm indicators for smoke and linear heat detection. The panel is configured to receive a terminus of a linear heat detection cable and a terminus of a smoke alarm detection piping. The panel includes a smoke detection test port that may receive simulated smoke and is connected to another terminus of the smoke alarm detection piping. A linear heat detection test switch triggers a test mode and interacts with the linear heat detection cable. During the test mode, the system circulates simulated smoke, analyzes air quality and electrical conditions, and activates corresponding alarm indicators. The performance of these functionalities helps determine whether the system meets operational criteria.

Claims20

Dependent claims

A system for detecting fire conditions in an elevator hoistway, the system comprising:

a smoke alarm detection piping, at least a portion of the smoke alarm detection piping being disposed within the elevator hoistway;
a linear heat detection cable, at least a portion of the linear heat detection cable being disposed within the elevator hoistway and affixed to at least a portion of the smoke alarm detection piping via a plurality of mounting clips;
an integrated monitoring panel disposed in an elevator machine room, the integrated monitoring panel comprising:
processing circuitry configured to trigger a test mode;
a power supply configured to supply power to at least the integrated monitoring panel;
a power supply fault indicator configured to monitor the power supply for a power supply fault;
a smoke detection fault indicator;
a smoke detection alert indicator;
a smoke detection alarm indicator;
a smoke detection test port in fluid communication with the smoke alarm detection piping, the smoke detection test port being configured to receive simulated smoke;
the smoke alarm detection piping comprising a first terminus connected to the smoke detection test port and a second terminus connected to the integrated monitoring panel;
a linear heat detection alarm indicator;
a linear heat detection test switch configured to trigger testing of the linear heat detection cable;
the linear heat detection cable comprising a first terminus in electrical communication with the linear heat detection switch and a second terminus connected to the integrated monitoring panel;
an exhaust port configured to discharge fluid in the smoke alarm detection piping;
the linear heat detection test switch being configured to apply an electrical condition to the first terminus of the linear heat detection cable based at least in part on the triggering of testing of the linear heat detection cable;
and
the processing circuitry configured to:
during the test mode:
analyze an air quality condition at the second terminus of the smoke alarm detection piping based on a circulation of the simulated smoke through the smoke alarm detection piping from at least the first terminus of the smoke alarm detection piping to the second terminus of the smoke alarm detection piping;
cause at least one of the smoke detection fault indicator or the smoke detection alarm indicator to activate based at least in part on the air quality condition;
analyze an electrical state of the second terminus of the linear heat detection cable;
cause the linear heat detection alarm indicator to activate based at least in part on the electrical state;
and
determine the system meets at least one operational criteria based on activation of:
at least one of the smoke detection fault indicator or the smoke detection alarm indicator;
and
the linear heat detection alarm indicator.

25 more elements

An integrated monitoring panel for an elevator hoistway fire detection system, the integrated monitoring panel comprising:

processing circuitry configured to trigger a test mode;
a power supply configured to supply power to at least the integrated monitoring panel;
a power supply fault indicator configured to monitor the power supply for a power supply fault;
a smoke detection fault indicator;
a smoke detection alert indicator;
a smoke detection alarm indicator;
a smoke detection test port in fluid communication with a smoke alarm detection piping, the smoke detection test port being configured to receive simulated smoke, the smoke detection test port being further configured to receive a first terminus of a smoke alarm detection piping;
a linear heat detection alarm indicator;
a linear heat detection test switch configured to trigger testing of a linear heat detection cable, the linear heat detection switch being further configured to receive a first terminus of a linear heat detection switch;
the integrated monitoring panel being configured to receive a second terminus of the smoke alarm detection piping and a second terminus of the linear heat detection cable;
an exhaust port configured to discharge fluid in the smoke alarm detection piping;
the linear heat detection test switch being configured to apply an electrical condition to the first terminus of the linear heat detection cable based at least in part on the triggering of testing of the linear heat detection cable;
and
the processing circuitry configured to:
during the test mode:
analyze an air quality condition at the second terminus of the smoke alarm detection piping based on a circulation of the simulated smoke through the smoke alarm detection piping from at least the first terminus of the smoke alarm detection piping to the second terminus of the smoke alarm detection piping;
cause at least one of the smoke detection fault indicator or the smoke detection alarm indicator to activate based at least in part on the air quality condition;
analyze an electrical state of the second terminus of the linear heat detection cable;
cause the linear heat detection alarm indicator to activate based at least in part on the electrical state;
and
determine the system meets at least one operational criteria based on activation of:
at least one of the smoke detection fault indicator or the smoke detection alarm indicator;
and
the linear heat detection alarm indicator.

21 more elements

A method in an integrated monitoring panel for an elevator hoistway fire detection system, the integrated monitoring panel comprising:

processing circuitry configured to trigger a test mode;
a power supply configured to supply power to at least the integrated monitoring panel;
a power supply fault indicator configured to monitor the power supply for a power supply fault;
a smoke detection fault indicator;
a smoke detection alert indicator;
a smoke detection alarm indicator;
a smoke detection test port in fluid communication with a smoke alarm detection piping, the smoke detection test port being configured to receive simulated smoke, the smoke detection test port being further configured to receive a first terminus of a smoke alarm detection piping;
a linear heat detection alarm indicator;
a linear heat detection test switch configured to trigger testing of a linear heat detection cable, the linear heat detection switch being further configured to receive a first terminus of a linear heat detection switch;
the integrated monitoring panel being configured to receive a second terminus of the smoke alarm detection piping and a second terminus of the linear heat detection cable;
an exhaust port configured to discharge fluid in the smoke alarm detection piping;
the linear heat detection test switch being configured to apply an electrical condition to the first terminus of the linear heat detection cable based at least in part on the triggering of testing of the linear heat detection cable;
and
the method comprising:
during the test mode:
analyzing an air quality condition at the second terminus of the smoke alarm detection piping based on a circulation of the simulated smoke through the smoke alarm detection piping from at least the first terminus of the smoke alarm detection piping to the second terminus of the smoke alarm detection piping;
causing at least one of the smoke detection fault indicator or the smoke detection alarm indicator to activate based at least in part on the air quality condition;
analyzing an electrical state of the second terminus of the linear heat detection cable;
causing the linear heat detection alarm indicator to activate based at least in part on the electrical state;
and
determining the system meets at least one operational criteria based on activation of:
at least one of the smoke detection fault indicator or the smoke detection alarm indicator;
and
the linear heat detection alarm indicator.

21 more elements

Dependencies are inferred from the claim text.