Invention Grant
- Patent Title: Method, a safety control unit and an elevator system for defining absolute position information of an elevator car
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Application No.: US15869283Application Date: 2018-01-12
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Publication No.: US11358832B2Publication Date: 2022-06-14
- Inventor: Ari Kattainen , Antti Hovi
- Applicant: Kone Corporation
- Applicant Address: FI Helsinki
- Assignee: Kone Corporation
- Current Assignee: Kone Corporation
- Current Assignee Address: FI Helsinki
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: EP17155574 20170210
- Main IPC: B66B1/40
- IPC: B66B1/40 ; B66B1/34 ; B66B7/12 ; B66B5/00
Abstract:
This invention relates to a method for defining absolute position information of an elevator car. The method comprises: obtaining continuously a pulse position information of the elevator car; and defining an absolute position information of the elevator car by adding a predefined correction value to the obtained pulse position information of the elevator car. The predefined correction value indicates a drift between the obtained pulse position information of the elevator car and the actual pulse position of the elevator car. The invention also relates to a safety control unit and an elevator system performing at least partly the method.
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