Elevator self-diagnostic control system

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

187101, B66B 300

Patent

active

048982636

ABSTRACT:
An elevator self-diagnostic system monitors the operative status of various elevator components and upon sensing an error initiates action to bring the elevator car to a safe operating state. The system then logs the error. The diagnostic system then analyzes the error and the conditions prevailing at the time the error occurred and, if necessary, a corrective action is then taken to resolve the error. This allows the elevator system to be brought back into service more quickly than would otherwise be possible. Specifically, a number of tests are serially performed on various elevator components, such as the motor drive, the position sensors, etc. When an error, or fault, arises in a system component, a selt-diagnostic system logs a preselected error level which has been assigned to the particular fault. A preselected action is then taken according to the particular error. For example, if the output of the position encoder is lost while the elevator car is running, then the elevator car's velocity is decreased at a constant rate until the car is brought to a stop. A short time later, the car is restarted and proceeds toward its target floor.

REFERENCES:
patent: 4397377 (1983-08-01), Husson et al.
patent: 4491198 (1985-01-01), Noda et al.
patent: 4681190 (1987-07-01), Toshiaki
patent: 4698780 (1987-10-01), Mandel et al.
patent: 4771865 (1988-09-01), Hinderling
patent: 4823914 (1989-04-01), McKinney et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Elevator self-diagnostic 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 Elevator self-diagnostic control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator self-diagnostic control system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-437409

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.