Error detecting circuit for a traffic control system

Details Error detecting circuit for a traffic control system Error detecting circuit for a traffic control system

1976-09-07

1979-01-16

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

340 41R, 340642, B60Q 900

Patent

active

041351452

ABSTRACT:
An error detecting circuit which senses the operating states of a plurality of traffic signal lights the energization of which is controlled by a single block of load switches and which circuit produces an error signal when certain predetermined relations exist for a predetermined period of time between the states of the lights, such as, if more than one traffic signal light of one traffic signal head is energized simultaneously or if none of the traffic signal lights of one traffic signal head is energized.

REFERENCES:
patent: 2166721 (1939-07-01), Jeffers
patent: 3596239 (1971-07-01), Hata
patent: 3629802 (1971-12-01), Clark et al.
patent: 3648233 (1972-03-01), Clark
patent: 3778762 (1973-12-01), Jarko et al.
patent: 3902156 (1975-08-01), Hill
patent: 4024528 (1977-05-01), Boggs et al.

Affiliated with

Also associated with

Rating

Error detecting circuit for a traffic control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Error detecting circuit for a traffic control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Error detecting circuit for a traffic control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-653661