ELECTRIC DOOR MONITORING

A method of monitoring the mechanical condition of a passenger door on a public transit vehicle wherein the door operator is a brushed direct current electrical motor and comprises the steps of: repeatedly recording a profile of the motor current vs. time following initiation of opening or closing o...

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Bibliographische Detailangaben
1. Verfasser:	GOETZELMANN, ALAN DAVID
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BODY DETAILS OR KINDS OF RAILWAY VEHICLES PERFORMING OPERATIONS RAILWAYS REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES TRANSPORTING VEHICLES IN GENERAL WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES
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Beschreibung
Zusammenfassung:	A method of monitoring the mechanical condition of a passenger door on a public transit vehicle wherein the door operator is a brushed direct current electrical motor and comprises the steps of: repeatedly recording a profile of the motor current vs. time following initiation of opening or closing of the door; based on previously recorded profiles establishing acceptable ranges of motor current for times following initiation of opening or closing the door; and comparing an instant motor current profile to the acceptable ranges and indicating a potential fault condition if the motor current is outside the acceptable ranges.