Communications: electrical – Aircraft alarm or indicating systems
Patent
1993-03-24
1995-03-28
Peng, John K.
Communications: electrical
Aircraft alarm or indicating systems
340946, 340661, G08B 2100
Patent
active
054021197
ABSTRACT:
Aircraft systems and sensors are monitored by pre-wiring a plurality of mating connectors to each system. Each mating connector has a positive voltage pin, a zero voltage pin and a reference pin. For those systems and sensors that emit zero voltage, the system is connected to the positive voltage pin while a jumper is used to connect the zero voltage pin to the reference voltage pin. For those systems emitting positive voltage, the system is connected with the zero voltage pin while a jumper is used to connect the positive voltage pin to the reference voltage pin. For each system or sensor monitored, there is a voltage comparator having both a positive and a negative input connected with a rear-mounted connector for connection with the pre-wired mating connectors. The rear-mounted connectors have identical pin arrangements with the mating connector for proper connections. A reference voltage which is approximately one-half of the operating voltage of the aircraft is channeled through the annunciator system from a rechargeable power source. By connecting the connectors by matching their respective pins, an alert signal can be monitored by the comparators.
REFERENCES:
patent: 3641546 (1972-02-01), Blackburn
patent: 3739376 (1973-06-01), Keledy
Delta Aerosystems, Inc.
Lee Benjamin C.
Peng John K.
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