To provide a platform detecting device for a passenger conveyor capable of accurately detecting congestion near a platform as a whole.
This platform detecting device for a passenger conveyor includes: a laser scan sensor which emits a plurality of beams passing through on a horizontal cross section of a platform and catches the beam reflected by a part of a body of a passenger and measures a distance to a reflecting position in a predetermined cycle; a volume estimating means which estimates volume by synthesizing a distance measured in continuous former and later cycle; a slip ratio computing means which computes a slip ratio by counting the beam changed large in distance thereof measured in the continuous former and later cycles; and a control section including an alarm means which generates an alarm when any one of conditions is satisfied, volume exceeds a first threshold value or the slip ratio is less than a predetermined second threshold value.
HAYASHI KENTARO
HIRAI TAKAHIDE
MITSUBISHI ELECTRIC CORP
| JPH01242390A | 1989-09-27 | |||
| JPH04308185A | 1992-10-30 | |||
| JP2008303057A | 2008-12-18 | |||
| JP2000003499A | 2000-01-07 |
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Shunichi Ueda
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