Apparatus and method for controlling an aircraft cooling and smoke system using discrete components
First Claim
1. A control system disposed in a mobile platform, operable to control at least one electronic unit and at least one cooling device, the system comprising:
- a smoke detector in communication with the electronic unit, the smoke detector operably identifying a smoke event in the electronic unit;
a cooling system having the cooling device in communication with the electronic unit;
at least one time delay unit operable to create a predetermined time period persistence delay; and
a plurality of relays connectable to at least one of the electronic unit, the smoke detector and the cooling system, including at least the following;
a first relay operable to immediately de-energize the cooling system following a cooling system fault; and
a second relay operable to de-energize the cooling system after identification of the smoke event and following the persistence delay.
1 Assignment
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Accused Products
Abstract
A combined smoke detector and cooling control system for a mobile platform is operable to control multiple electronic units. A smoke detector is connected to the electronic unit and operates to identify a smoke event. A cooling system is connected to the electronic unit. A fan in the cooling system includes a switch which indicates if a cooling system fault occurs. A plurality of relays connect to the electronic unit, the smoke detector and the cooling system. If a cooling system fault occurs, a first relay immediately de-energizes the cooling system. After a fixed period of smoke persistence during a smoke event, a second relay de-energizes the cooling system.
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Citations
55 Claims
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1. A control system disposed in a mobile platform, operable to control at least one electronic unit and at least one cooling device, the system comprising:
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a smoke detector in communication with the electronic unit, the smoke detector operably identifying a smoke event in the electronic unit;
a cooling system having the cooling device in communication with the electronic unit;
at least one time delay unit operable to create a predetermined time period persistence delay; and
a plurality of relays connectable to at least one of the electronic unit, the smoke detector and the cooling system, including at least the following;
a first relay operable to immediately de-energize the cooling system following a cooling system fault; and
a second relay operable to de-energize the cooling system after identification of the smoke event and following the persistence delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A combined smoke detector and cooling control system operable to control a plurality of electronic units, the system comprising:
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a smoke detector in communication with the electronic unit, the smoke detector operably identifying a smoke event in the electronic unit;
a cooling system in communication with the electronic unit;
a fan in the cooling system having a switch operable to indicate a cooling system fault;
a plurality of relays connectable to at least one of the electronic unit, the smoke detector and the cooling system, including at least one each of the following;
a first relay operable to immediately de-energize the cooling system after indication of the cooling system fault; and
a second relay operable after a predetermined time period persistence delay, the second relay operable to de-energize the cooling system after identification of the smoke event and following the persistence delay. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for controlling an aircraft cooling and smoke system having a plurality of relays connected to at least one smoke detector and at least one cooling subsystem, the cooling subsystem operable to cool a plurality of electrical components, the method comprising:
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detecting a smoke event using the smoke detector;
generating a smoke mode signal in response to the smoke event;
applying a time delay unit to operably delay the smoke mode signal;
performing a delayed shutdown of the cooling subsystem and the electrical components; and
latching both the cooling subsystem and the electrical components in an off state using a first relay. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. A method to control at least one cooling subsystem connected to a plurality of electrical components in response to one of a smoke detector smoke event and a cooling system fault for a mobile platform, the method comprising:
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changing a thermal switch position in response to the cooling system fault;
immediately shutting down the cooling subsystem in response to changing the thermal switch position;
blocking an automatic restart of the cooling subsystem using a test switch; and
manually changing a position of the test switch to operably perform a maintenance test of the cooling subsystem prior to initiating a manual cooling subsystem restart. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method for controlling a plurality of electrical components of a mobile platform operably using signals from at least one smoke detector, at least one cooling subsystem and a plurality of relays, the method comprising steps in the order of:
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(a) generating a cooling system fault signal if a cooling system fault occurs;
(b) immediately shutting down the cooling subsystem and the electrical components if the cooling system fault signal is generated;
(c) detecting a smoke event using the smoke detector if the cooling system fault signal is not present;
(d) generating a smoke mode signal in response to the smoke event; and
(e) performing a delayed shutdown of the cooling subsystem and the electrical components using a time delay unit to operably delay the smoke mode signal. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification