MX9504343A - Deteccion de haz variable. - Google Patents

Deteccion de haz variable.

Info

Publication number
MX9504343A
MX9504343A MX9504343A MX9504343A MX9504343A MX 9504343 A MX9504343 A MX 9504343A MX 9504343 A MX9504343 A MX 9504343A MX 9504343 A MX9504343 A MX 9504343A MX 9504343 A MX9504343 A MX 9504343A
Authority
MX
Mexico
Prior art keywords
beam strength
beams
energy
controller
emitters
Prior art date
Application number
MX9504343A
Other languages
English (en)
Other versions
MXPA95004343A (es
Inventor
Brian J Amend
Michael Garfinkel
Original Assignee
Otis Elevator Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Publication of MX9504343A publication Critical patent/MX9504343A/es
Publication of MXPA95004343A publication Critical patent/MXPA95004343A/es

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Elevator Door Apparatuses (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Radiation (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

Un aparato para detectar obstrucciones incluye una pluralidad de emisores para irradiar haces de energía, una pluralidad de detectores para proporcionar señales detectoras en respuesta a los haces de energía irradiados por la pluralidad de emisores, y un controlador para determinar si los haces de energía están obstruidos analizando las señales detectoras e implementando un umbral de deteccion dinámico. El controlador genera una resistencia de haz promedio y una resistencia de haz de corriente desde donde el medio controlador determina si hay presente una obstruccion determinando si la resistencia del haz de la corriente queda dentro de una escala predeterminada de la resistencia de haz promedio.
MXPA/A/1995/004343A 1994-10-25 1995-10-13 Deteccion de haz variable MXPA95004343A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/329,025 US5567931A (en) 1994-10-25 1994-10-25 Variable beam detection using a dynamic detection threshold
US08329025 1994-10-25

Publications (2)

Publication Number Publication Date
MX9504343A true MX9504343A (es) 1998-12-31
MXPA95004343A MXPA95004343A (es) 1999-02-01

Family

ID=

Also Published As

Publication number Publication date
EP0709335A1 (en) 1996-05-01
CN1132178A (zh) 1996-10-02
JPH08208162A (ja) 1996-08-13
FI955071A (fi) 1996-04-26
AU3303795A (en) 1996-05-09
AU695919B2 (en) 1998-08-27
BR9504511A (pt) 1997-05-27
US5567931A (en) 1996-10-22
MY132045A (en) 2007-09-28
FI955071A0 (fi) 1995-10-24
ZA958087B (en) 1996-04-26
KR960013974A (ko) 1996-05-22
TW336998B (en) 1998-07-21

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