B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
364/12
B66B 1/20 (2006.01)
Patent
CA 1313279
Abstract Queue Based Elevator Dispatching System Using Peak Period Traffic Prediction Elevator system with multiple cars (1-4) and a group controller (32) having signal processing means (CPU) controlling car dispatching from the lobby (L). During peak conditions (up-peak, down-peak and noontime), each car is dispatched and assigned to hall call floors having a large predicted number of passengers waiting on priority basis, resulting in queue length and waiting time at the lobby and upper floors being decreased, and system handling capacity increased. Estimations of future traffic flow levels for the floors for five minute intervals are made using traffic levels measured during the past few time intervals on that day as real time predictors, using a linear exponential smoothing model, and traffic levels measured during similar time intervals on previous similar days as historic traffic predictors, using a single exponential smoothing model. Combined prediction is used to assign hall calls to cars on priority basis for those floors having predicted high level of passenger traffic to limit maximum waiting time and car load. Noontime priority scheme is based on multiple queue sizes and percentages of maximum waiting time limits. Different waiting time limits can be used for lobby and above lobby up and down hall calls with automatic adjustment. During up-peak the lobby is given high priority. The lobby queue is predicted using passenger arrival rates and expected car arrival times. Down-peak operation uses multiple queue levels and per- centages of waiting time limits, with estimated queues based on passenger arrival using car-to-hall-call travel time.
603319
Gowling Lafleur Henderson Llp
Otis Elevator Company
Thangavelu Kandasamy
LandOfFree
Queue based elevator dispatching system using peak period... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Queue based elevator dispatching system using peak period..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Queue based elevator dispatching system using peak period... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1275863