Invention Grant
- Patent Title: Electrical signal application strategies for monitoring a condition of an elevator load bearing member
- Patent Title (中): 用于监测电梯承载构件状况的电信号应用策略
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Application No.: US13195902Application Date: 2011-08-02
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Publication No.: US08424653B2Publication Date: 2013-04-23
- Inventor: Paul A. Stucky , Michael A. Kryzman , William A. Veronesi
- Applicant: Paul A. Stucky , Michael A. Kryzman , William A. Veronesi
- Applicant Address: US CT Farmington
- Assignee: Otis Elevator Company
- Current Assignee: Otis Elevator Company
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds PC
- Main IPC: B66B3/00
- IPC: B66B3/00

Abstract:
An elevator load bearing member (30) monitoring device includes a controller (42) that applies a selected electrical signal to tension members (32) of the load bearing member (30). In one example, connectors (40) are associated with ends of the load bearing member (30) to establish an electrical interface between the controller (42) and the tension members (32). The connectors (40) facilitate establishing electrical circuit loops along the tension members (32) such that only non-adjacent tension members are energized at a selected time. A variety of circuit configurations are disclosed. The applied electrical signal in one example has a potential that is negative compared to a ground potential of a hoistway in which the elevator belt is used. In another example, the electrical signal comprises a plurality of pulses and has a duty cycle that is on the order of about one percent.
Public/Granted literature
- US20110284331A1 ELECTRICAL SIGNAL APPLICATION STRATEGIES FOR MONITORING A CONDITION OF AN ELEVATOR LOAD BEARING MEMBER Public/Granted day:2011-11-24
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