Process and device for analizing and validating signals usable i

Details Process and device for analizing and validating signals usable i Process and device for analizing and validating signals usable i

1974-12-02

1976-08-24

Habecker, Thomas B.

Communications: electrical

Selective

Having indication or alarm

340167R, 340221, G08G 100

Patent

active

039769704

ABSTRACT:
Two orientated magnetic field generating means such as permanent magnets are embedded in a roadway at some distance from each other before a road-sign, said magnets extending on the whole width of the roadway. When a vehicle equipped with a detector crosses said magnets, signals of pseudo-sinusoidal shape are generated. Said signals are applied to elements converting them to calibrated pulses corresponding to the two alternations of the signals. The order of said ulses is checked to validate only pulses appearing in a predetermined order, thus eliminating direction ambiguity. The time separating two pulses is also checked to validate only pairs of pulses comprised in a predetermined time period, thus eliminating interferences from outside. The pairs of pulses are transmitted to at least one time window circuit which is adjusted to a predetermined period of time. Only pairs of pulses appearing within said predetermined period are validated. Said pairs of pulses are counted and their number is compared with a predetermined number; they are then transmitted to a warning device. By providing two time window circuits adjusted to different periods of time, the system can be used both for indicating road-signs and as a kinemometer, the two magnets being then separated by a distance which is a function of the authorized speed.

REFERENCES:
patent: 1803292 (1931-04-01), Adler
patent: 2493755 (1950-01-01), Ferrill
patent: 3493923 (1970-02-01), Stevens
patent: 3668624 (1972-06-01), Spaulding
patent: 3753223 (1973-08-01), Fayling
patent: 3775743 (1973-11-01), Carter

Affiliated with

Also associated with

Rating

Process and device for analizing and validating signals usable i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for analizing and validating signals usable i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for analizing and validating signals usable i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-781642