Single fault impervious integrated control and monitoring system
First Claim
1. A single-fault-impervious integrated control and monitoring avionic system, comprising:
- a. a pair of concentrators interchangeably capable of assuming primary and secondary status, respectively;
b. a plurality of workstations, one of said workstations being a Remote Master Workstation; and
c. a pair of independent communication paths each interconnecting one of said pair of concentrators with said workstations;
d. each of said pair of concentrators being connected in parallel to a plurality of avionic equipment interfaces arranged to convey avionic equipment data to said concentrators and to convey operational commands from said concentrator to said avionic equipment;
e. said pair of concentrators being so interconnected with each other that whenever one of them is in primary status, the outputs of the other are blocked but its inputs continue to function, each of said concentrators providing a status signal that is transmitted directly between said concentrators.
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Accused Products
Abstract
An integrated control and monitoring system for airport avionics is made single-point-of-failure impervious by continuously operating pairs of parallel-connected concentrators, Remote Master Workstations and Remote Slave Workstations, and a pair of independent LANs each connecting one of the concentrators of a pair to the Remote Workstations. Each concentrator of a concentrator pair, while in secondary status, monitors the operation of the concentrator in primary status, and whenever it observes a failure of communication will assume primary status and continue to allow ICMS to function in a normal manner. Likewise, another Remote Master Workstation automatically assumes Remote Master Workstation status if it fails to see an operational active master station on the network.
29 Citations
20 Claims
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1. A single-fault-impervious integrated control and monitoring avionic system, comprising:
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a. a pair of concentrators interchangeably capable of assuming primary and secondary status, respectively;
b. a plurality of workstations, one of said workstations being a Remote Master Workstation; and
c. a pair of independent communication paths each interconnecting one of said pair of concentrators with said workstations;
d. each of said pair of concentrators being connected in parallel to a plurality of avionic equipment interfaces arranged to convey avionic equipment data to said concentrators and to convey operational commands from said concentrator to said avionic equipment;
e. said pair of concentrators being so interconnected with each other that whenever one of them is in primary status, the outputs of the other are blocked but its inputs continue to function, each of said concentrators providing a status signal that is transmitted directly between said concentrators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling and monitoring airport avionics systems, comprising:
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a) providing a primary concentrator assuming a primary status, and a secondary concentrator assuming a secondary status, each concentrator connected to each other, and connected in parallel to a first remote master workstation that controls and monitors aircraft guidance equipment and airport safety equipment so that only one of the concentrators assumes primary status at a given point in time;
b) monitoring aircraft guidance equipment and airport safety equipment with the primary and secondary concentrators; and
c) controlling the aircraft guidance equipment and airport safety equipment without interruption by causing the secondary concentrator to assume primary status when the primary concentrator experiences a failure. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
d) generating a status signal from the primary concentrator; - and
e) transmitting the status signal to the secondary concentrator.
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12. The method of claim 11, wherein the transmitting step comprises transmitting the status signal from the primary concentrator directly to the secondary concentrator.
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13. The method of claim 9, further comprising
d) causing the primary concentrator to assume secondary status after the secondary concentrator assumes primary status. -
14. The method of claim 9, further comprising
d) archiving data regarding status changes received from the airport guidance equipment and airport safety equipment, and controls sent to the airport guidance equipment and airport safety equipment. -
15. The method of claim 9, further comprising
d) providing at least one additional computer workstation in communication with each of the concentrators, the at least one additional computer workstation assuming an active status and becoming a second remote master workstation if the first remote master workstation experiences a failure. -
16. The method of claim 9, wherein the primary and secondary concentrators are connected to each other by three status lines, a first status line connecting the primary and secondary concentrators to transmit information to determine which concentrator has assumed primary status, a second status line connecting the primary and secondary concentrators to transmit information to determine which concentrator has assumed secondary status, and a third status line to transmit information to the primary concentrator to determine if the secondary concentrator is in communication with the remote master workstation.
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17. The method of claim 9, wherein the secondary concentrator assumes primary status when the primary concentrator experiences a communication failure with the secondary concentrator or with the first remote master workstation.
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18. The method of claim 9, wherein the concentrators and the first remote master workstation are provided in locations spaced apart from each other.
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19. The method of claim 9, wherein each of the concentrators is configured to provide output signals to the aircraft guidance equipment and airport safety equipment, but only the concentrator that has assumed primary status transmits those output signals to the aircraft guidance equipment and airport safety equipment.
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20. The method of claim 9, wherein each of the concentrators provides a signal to the first remote master workstation to monitor the availability of the first remote master workstation.
Specification