Anti-bunching method for dispatching elevator cars

Details Anti-bunching method for dispatching elevator cars Anti-bunching method for dispatching elevator cars

1988-03-16

1988-12-13

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 118

Patent

active

047904127

ABSTRACT:
A method of assigning hall calls to a plurality of elevator cars in an ETA strategy in which up hall calls are scanned upwardly and down calls downwardly. A hall call floor at which the scan has stopped for the purpose of assigning or reassigning a hall call at the floor is called a "scan floor". The floor of the advanced position of the car being considered for assignment is called the "AVP floor". In order to favor the clustering of closely adjacent stops in a given car, and thus minimize car bunching, when a car has an intervening stop between the AVP floor and the scan floor, either the travel distance between the AVP floor and the scan floor, or the travel distance from an intervening stop to the scan floor, is used to develop a dynamic bias for the ETA of the associated car. The dynamic or variable bias is inversely proportional to the travel distance, i.e., the number of floors, between the relevant floors.

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