Elevator position detection apparatus
First Claim
1. An elevator position detection apparatus, comprising:
- a detection subject body disposed 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 than 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 detector attached to 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;
identification circuitry configured to identify the respective types of the segments on the basis of the signals from the detector, and output a time series signal corresponding to the ID sequence depending on the type of each segment;
digital data conversion circuitry that converts the time series signal into digital data on the basis of variations of the time series signal from the identification circuitry; and
position specification circuitry that specifies a position of the elevating body on the basis of the digital data from the digital data conversion circuitry,wherein the different types of segments forming the ID sequence include different conductivities, andwherein one of the types of the segments disposed so as to avoid the respective ends of the ID sequence is an insulation portion.
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Accused Products
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.
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Citations
11 Claims
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1. An elevator position detection apparatus, comprising:
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a detection subject body disposed 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 than 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 detector attached to 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; identification circuitry configured to identify the respective types of the segments on the basis of the signals from the detector, and output a time series signal corresponding to the ID sequence depending on the type of each segment; digital data conversion circuitry that converts the time series signal into digital data on the basis of variations of the time series signal from the identification circuitry; and position specification circuitry that specifies a position of the elevating body on the basis of the digital data from the digital data conversion circuitry, wherein the different types of segments forming the ID sequence include different conductivities, and wherein one of the types of the segments disposed so as to avoid the respective ends of the ID sequence is an insulation portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An elevator position detection apparatus, comprising:
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a plurality of detection subjects disposed in a hoistway and including a corresponding ID sequence having segments having a different magnetic properties, at least two of the plurality of detection subjects including ID sequences which are different from each other; an eddy current detector attached to an elevating body to generate signals corresponding to the magnetic properties of the respective segments by applying a magnetic field to the ID sequences while passing through positions of the detection subjects; identification circuitry configured to identify the respective segments on the basis of the signals from the detector, and output a signal corresponding to the respective segments; digital data conversion circuitry that converts the signal which has been output into digital data on the basis of variations of the signal which has been output; and position specification circuitry that specifies a position of the elevating body on the basis of which of the plurality of detection subjects has been detected. - View Dependent Claims (10, 11)
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Specification