Traffic control systems

Details Traffic control systems Traffic control systems

1997-06-10

1999-04-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250DIG1, G01V 810

Patent

active

058922261

ABSTRACT:
A traffic light control system comprises a passive infra-red presence detection system for detecting the presence of a target emitting infra-red radiation, which comprises a pyro-electric detector including an array of pyro-electric sensor elements. The pyro-electric detector is arranged to generate a signal representative of movement of the target within a detection zone of the detector. By priding a signal processing unit which operates to analyse pulses present in the signal, the said presence detection system is provided with a means whereby it can not only detect movement of the target within the detection zone but also whether that target has moved into and stopped within the detection zone.

REFERENCES:
patent: 4225786 (1980-09-01), Perlman
patent: 5714754 (1998-02-01), Nicholas

Affiliated with

Also associated with

Rating

Traffic control systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Traffic control systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Traffic control systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1373599