Elevator control system

Details Elevator control system Elevator control system

1977-07-26

1979-09-04

Truhe, J. V.

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

041665180

ABSTRACT:
A plurality of floors served by elevator cars are scanned by direction to detect car positions and hall calls. For each of the cars, a predetermined number is counted up for each scan slot after detection of a car position to determine the service load of each car to be borne before arrival at each floor. When a hall call is detected by scanning, a car with minimum service load in the related slot is selected and the hall call is allotted to that car. When the failure of a car to run to an end floor is predicted in counting the service load of the car, switch is made to count down in response to directional reversal when the scanning has reached the end floor. At the time of subsequent detection of an allotted hall call by scanning, switching is again made to count up, thus determining a proper service load of the cars.

REFERENCES:
patent: 3511342 (1970-05-01), Hall et al.
patent: 3739880 (1973-06-01), Robaszkiewicz
patent: 3851733 (1974-12-01), Sackin et al.

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