System to control and temporarily adapt semaphoric regulation

Details System to control and temporarily adapt semaphoric regulation System to control and temporarily adapt semaphoric regulation

1987-08-03

1990-01-23

Crosland, Donnie L.

Communications: electrical

Override of traffic control indicator by command transmitter

340902, 340907, 340932, G08G 107

Patent

active

048961531

ABSTRACT:
System to control and temporarily adapt semaphoric regulation, consisting of one first receiving radioelectric equipment (F), equipped with nondirectional aerial, and provided, on roads, buildings, etc., in number suitable for requirements of monitored crossings, to receive and decode signals on a given frequency; one transmitting radioelectric equipment (I), equipped with directional aerial (L), in the same number as that of said receiving radioelectric equipments, suitable for retransmitting said properly reencoded signals, said receiving and transmitting equipment forming decentralized monitoring sites (4) for controls and transit; one second receiving radioelectric equipment (5), equipped with nondirectional aerial (M), provided near the usual switching exchange (7) of semaphoric signals (3), able to decode the signal received on a given frequency; and of one main transmitter (2), connected to aerial means (D), and provided on rescue vehicle (1); between said second receiving radioelectric equipment and usual switching exchange being provided an intelligent interface (6).

REFERENCES:
patent: 2903674 (1959-09-01), Schwab
patent: 3881169 (1975-04-01), Malach
patent: 4704610 (1987-11-01), Smith et al.

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