Door sensor system

Details Door sensor system Door sensor system

1989-04-14

1990-10-30

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250221, 49 25, 340545, E05F 1520

Patent

active

049670832

ABSTRACT:
A sensor system for an automatic sliding door employs multiple sensor modules. Each of the sensor modules includes both a presence sensor and a motion sensor. In addition, each of the sensor units includes switches for adjusting the size of the presence zone, for selecting either a continuous or a triggered scan mode and for selecting an operating phase to prevent interference. The sensor units are generally mounted above the threshold of the doorway and their opeations are synchronized to provide both a traffic sensor and a safety sensor for a sliding door system.

REFERENCES:
patent: 3852592 (1974-12-01), Scoville et al.
patent: 4577437 (1986-03-01), Gionet et al.
patent: 4698937 (1987-10-01), Kornbrekke et al.
patent: 4823010 (1989-04-01), Kornbrekke et al.
patent: 4894952 (1990-01-01), Trett et al.

Affiliated with

Also associated with

Rating

Door sensor 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 Door sensor system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door sensor system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-276592