ELEVATOR POSITION DETECTION APPARATUS

• US 20170137257A1
• Filed: 05/21/2014
• Published: 05/18/2017
• Est. Priority Date: 05/21/2014
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: MOCHIZUKI, Keita, INOUE, Jin, SHIRATSUKI, Akihide, TAGUCHI, Hiroshi, ISHIKAWA, Masahiro
• Granted Patent: US 10,144,613 B2
• Time in Patent Office: Days
• CPC Class Codes: B66B 1/36 Means for stopping the cars, cages, or skips at predetermined levels
• CPC Class Codes: B66B 5/0018 Devices monitoring the operating condition of the elevator system
• CPC Class Codes: B66B 9/00 Kinds or types of lifts in, or associated with, buildings or other structures characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12

Abstract

A detection subject body provided in a hoistway includes an ID sequence formed by arranging three or more types of segments having different magnetic properties in a movement direction of an elevating body. An eddy current type detection unit is provided on the elevating body to generate signals corresponding to the magnetic properties of the respective segments. An identification unit identifies the respective types of the segments on the basis of the signals from the detection unit, and outputs a time series signal in a different output condition depending on the type of each segment. A digital data conversion unit converts the time series signal into digital data, on the basis of variations in the output condition of the time series signal from the identification unit. A position specification unit specifies the position of the elevating body on the basis of the digital data.

Claims

1-6. -6. (canceled)

7. :

An elevator position detection apparatus, comprising;

a detection subject body provided in a hoistway and including an ID sequence formed by arranging three or more types of segments respectively having different magnetic properties in a movement direction of an elevating body, wherein segments having a different magnetic property to a magnetic property of a space within the hoistway are disposed on respective ends of the ID sequence in the movement direction of the elevating body;

an eddy current type detection unit provided in the elevating body to generate signals corresponding to the magnetic properties of the respective segments by applying a magnetic field to the ID sequence while passing through a position of the detection subject body;

an identification unit that identifies the respective types of the segments on the basis of the signals from the detection unit, and outputs a time series signal, in a different output condition depending on the type of each segment;

a digital data conversion unit that converts the time series signal into digital data on the basis of variations in the output condition of the time series signal from the identification unit; and

a position specification unit that specifies a position of the elevating body on the basis of the digital data from the digital data conversion unit,

wherein the different types of segments forming the ID sequence are constituted by different types of conductors, and

one of the types of the segments disposed so as to avoid the respective ends of the ID sequence is an insulation portion.

8. :

The elevator position detection apparatus according to claim 7, wherein the insulation portion is a space portion.

9. :

The elevator portion detection apparatus according to claim 7, wherein the insulation portion is an insulating member.

10. :

The elevator position detection apparatus according to claim 7, wherein the ID sequence is provided on abase material constituted by a single material, and

a part constituted only by the material of the base material and a part formed by providing a plurality of holes in the base material are provided on the base material as the different types of segments.

11. :

The elevator position detection apparatus according to claim 8, wherein the ID sequence is provided on a base material constituted by a single material and

a part constituted only by the material of the base material and a part formed by providing a plurality of holes in the base material are provided on the base material as the different types of segments.

12. :

The elevator position detection apparatus according to claim 7, wherein the position specification unit specifies the position of the elevating body by determining the movement direction of the elevating body on the basis of information from an encoder that generates a signal corresponding to movement of the elevating body, and processing the digital data from the digital data conversion unit in accordance with the determined movement direction.

13. :

The elevator position detection apparatus according to claim 7, further comprising;

a plurality of the detection subject bodies, provided in a common position in the movement direction of the elevating body;

a plurality of detectors that correspond respectively to the detection subject bodies and respectively include the detection unit, the identification unit, the digital data conversion unit, and the position specification unit; and

an intersystem data comparison unit that determines whether or not an abnormality has occurred in the elevator by comparing information indicating the position of the elevating body, the information being specified by the respective position specification units of the detectors.