Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1981-08-17
1983-12-20
Martin, John C.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455612, 455617, 244194, H04B 900
Patent
active
044221800
ABSTRACT:
A control system for controlling, for example, the operation of an aircraft or any other system requiring a flow of data back and forth between controlling and controlled units of the system, comprises a passive, multiply intermeshed conductor network (20, 24) of light conductors (11, 12). This network transmits control signals in the form of digital light signals from a control signal source, such as a control stick (9) in the cockpit of an aircraft or spacecraft, to respective controlled servo-units (14). The transmission system includes signal processors (10) including mixers (15) and information devices (16, 17, 18) interposed between the control signal source and the network (24) which is connected to the addressable controlled units, e.g., servo-units. The system is powered by a power supply device comprising several energy sources which may be switched on selectively as required. Such energy sources include the propulsion plant, for example, of an aircraft, an auxiliary turbine (112), a slip wind turbine (120) and an electric battery (128). Each energy source is connected to a measuring and switching unit (106, 115, 124, 131) through redundant transmission units (110) three of which are connected in parallel to one another and to the network (24). The transmission units (110) are further connected through the network (24) to a testing device (135) for monitoring and controlling the connected units or components.
REFERENCES:
patent: 3708735 (1973-01-01), Barltrop
patent: 4105900 (1978-08-01), Martin et al.
R. Cotta "Fiber Optic Flight Control" Military Electronics/Counter Measures ol. 6, No. 4, Apr. 1980, pp. 59-63.
K. Hiramo "Recent Control Systems for Hydropower Plant" Hitachi Review vol. 28, (1979) No. 4 pp. 193-198.
Coles Edward L.
Fasse W. G.
Kane, Jr. D. H.
Martin John C.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
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