Elevator floor stop look-ahead

Details Elevator floor stop look-ahead Elevator floor stop look-ahead

1981-05-27

1982-09-21

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

043502261

ABSTRACT:
A group controller (17, FIG. 1) for an elevator system servicing a plurality of cars (3, 4) provides next higher demand signals (21, 23, FIG. 4) in addition to higher and lower demand signals (13, 18, FIG. 4), and provides next hall stop commands (8, 11, FIG. 3) in addition to down hall stop and up hall stop commands (11, 17, FIG. 2). The car controller (15, 16, FIG. 1) of each car will determine when its actual committable floor is equal to a floor ahead of the last committable floor it communicated to the group controller (2, FIG. 5) so as to utilize the next demand and next hall stop commands (3-6, FIG. 5) when it actually has advanced beyond the last committable floor for which the group controller has processed command signals for the car, whereby delays in communicating and processing signals between car controllers and a related group controller cannot result in loss of proper group demand and stop commands to the car controller.

REFERENCES:
patent: 3570630 (1971-03-01), Voigt et al.
patent: 3589474 (1971-06-01), Waure
patent: 3743055 (1973-07-01), Hoelscher et al.
patent: 3887039 (1975-06-01), Boniek
patent: 4039049 (1977-08-01), Yoneda et al.

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