Determination of the number of persons entering and leaving an elevator car
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United States of America Patent
Stats
-
Jul 25, 1995
Issued Date -
N/A
app pub date -
Mar 1, 1994
filing date -
Aug 15, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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