EP 1588397 A4 20151216 - INTERFERENCE COMPENSATION OPTICALLY SYNCHRONIZED SAFETY DETECTION SYSTEM FOR ELEVATOR SLIDING DOORS
Title (en)
INTERFERENCE COMPENSATION OPTICALLY SYNCHRONIZED SAFETY DETECTION SYSTEM FOR ELEVATOR SLIDING DOORS
Title (de)
INTERFERENZKOMPENSIERENDES OPTISCH SYNCHRONISIERTES SICHERHEITSMELDESYSTEM FÜR AUFZUGSSCHIEBETÜREN
Title (fr)
SYSTEME DE DETECTION ET DE SECURITE SYNCHRONISE A SYNCHRONISATION OPTIQUE ET A COMPENSATION D'INTERFERENCE POUR LES PORTES COULISSANTES D'ASCENSEURS
Publication
Application
Priority
US 0241816 W 20021231
Abstract (en)
[origin: WO2004059692A1] A method for detecting interference energy in a sliding door safety system (10) comprising the steps of disposing at least one emitter (11) along a first vertical surface, disposing at least one receiver (17) corresponding to the at least one emitter along a second vertical surface, activating the at least one receiver, activating the at least one emitter to emit an energy beam (23) comprising a modulated square wave of a predetermined frequency, sampling an energy intensity received by the activated at least one receiver a predetermined number of times recording each time a received energy intensity to form a plurality of recorded energy intensities, selecting the lowest magnitude one of the plurality of recorded energy intensities to form a lowest recorded energy intensity, comparing the lowest recorded energy intensity to a threshold value and determining a source of the energy intensity to be external when the lowest recorded energy intensity is less than the threshold value.
IPC 8 full level
B66B 13/24 (2006.01); B66B 13/26 (2006.01); H01J 40/14 (2006.01)
CPC (source: EP KR)
B66B 13/24 (2013.01 - KR); B66B 13/26 (2013.01 - EP KR); H01J 40/14 (2013.01 - KR); G01V 8/10 (2013.01 - EP)
Citation (search report)
- [I] US 6279687 B1 20010828 - PUSTELNIAK RICHARD D [US], et al
- [A] WO 0248745 A1 20020620 - PROSPECTS CORP [US]
- See references of WO 2004059692A1
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 2004059692 A1 20040715; AU 2002358313 A1 20040722; CN 100524604 C 20090805; CN 1720599 A 20060111; EP 1588397 A1 20051026; EP 1588397 A4 20151216; HK 1087529 A1 20061013; JP 2006512261 A 20060413; JP 4292159 B2 20090708; KR 100956728 B1 20100506; KR 20050091727 A 20050915
DOCDB simple family (application)
US 0241816 W 20021231; AU 2002358313 A 20021231; CN 02830123 A 20021231; EP 02792553 A 20021231; HK 06107473 A 20060703; JP 2004563169 A 20021231; KR 20057011029 A 20021231