Determination of the number of persons entering and leaving an e

Details Determination of the number of persons entering and leaving an e Determination of the number of persons entering and leaving an e

1994-03-01

1995-07-25

Dougherty, Thomas M.

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors passengers

187393, B66B 134

Patent

active

054354161

ABSTRACT:
Procedure for determining the number of passenger transfers in an elevator car on the basis of car load data. The procedure of the invention includes continuous measurement of the car load during stoppage, filtering of the measurement data, recording of the load changes taking place during stoppage, and determination of the number of persons having entered or left the elevator car, based on said changes. The device contains an A/D converter for converting the load data into digital form, and a recording and calculation unit placed in the elevator control system and connected to the output of the A/D converter to detect and count the changes in the load.

REFERENCES:
patent: 3065823 (1962-11-01), Burgy
patent: 3207266 (1965-09-01), Hornung
patent: 4044860 (1977-08-01), Kaneko et al.
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patent: 4460066 (1984-07-01), Ohta
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patent: 4573542 (1986-03-01), Schlegel et al.
patent: 5004076 (1991-04-01), Chen et al.
patent: 5182776 (1993-01-01), Suzuki et al.
patent: 5260527 (1993-11-01), Sirag, Jr.

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