Device for the signal-technical secure control and monitoring of

Details Device for the signal-technical secure control and monitoring of Device for the signal-technical secure control and monitoring of

1980-11-25

1982-10-26

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

455608, 340 46, 3408253, 34082562, 34082537, H04Q 900, G08G 1097, H04B 900

Patent

active

043564852

ABSTRACT:
In a remote control system which is operated by way of light wave guides a specific switching routine is executed at the receiving side upon failure of the system. As long as the remote control system functions properly, cyclically alternating signals, triggered at the transmission side, set a logic element at the receiving side so that the loads are connected for normal command-responsive operation. When the signals fail, or when a transmission is intentionally suppressed, the logic element is conditioned to cause execution of the specific switching routine. Given the design of the remote control system as a light signal control for traffic signals, the switching routine causes the connection of the STOP signal with simultaneous disconnection of the GO signals of the respectively affected light signal.

REFERENCES:
patent: 3577187 (1971-05-01), Benson
patent: 3597684 (1971-08-01), Damen
patent: 3692802 (1971-12-01), Clark et al.
patent: 3803974 (1974-04-01), Everest et al.
patent: 3893067 (1975-07-01), Watanabe et al.
patent: 3902156 (1975-08-01), Hill
patent: 4161650 (1979-07-01), Caouette et al.
patent: 4161651 (1979-07-01), Sano et al.

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