Home automation device for monitoring the movement of a swinging wing and method for enhancing the reliability of such a device
AssigneeMyfox
InventorsJean-Marc Prunet, Jean-Yves Fourniols
Life of this patent
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Abstract
A home automation device includes a movement detector (20) including an accelerometer and a magnetometer, and a processing unit for processing the signals supplied by the accelerometer and the magnetometer. At least one memory stores a reference orientation of the detector. The processing unit, on detection of a reference event from the acceleration signals, is capable of replacing the reference orientation with the instantaneous orientation of the detector.
Claims20
A home automation device comprising:
- at least one movement detector (20) for detecting movement of a wing (30, 31) rotatable about an axis relative to a frame (39) fixed in a terrestrial reference system, said movement detector comprising:
- a housing (22) adapted to be securable to the wing,
- an accelerometer (24) fixed to the housing and adapted to provide acceleration signals, representative of the acceleration of the housing (22) along at least one fixed direction of the housing (22) relative to the frame (39),
- a magnetometer (25) fixed to the housing and adapted to provide orientation signals, representative of the instantaneous orientation of at least one fixed direction of the housing (22) relative to an Earth's local magnetic field;
- and
- a processing unit (21) for processing the signals provided by the accelerometer (24) and by the magnetometer (25), wherein,
- the processing unit (21) comprises at least one memory (23) and is adapted to store therein predetermined reference orientation data, representative of a reference orientation, of the housing (22) relative to the Earth's local magnetic field,
- the processing unit (21) is adapted to be able to identify a predetermined reference event, at least from the acceleration signals, and
- the processing unit (21) is adapted, on detection of the predetermined reference event, to replace the reference orientation data with data representative of the instantaneous orientation of the housing (22).
A method for enhancing the reliability of detecting the movement of a wing (30, 31) rotatable about an axis relative to a frame (39) fixed in a terrestrial reference system, by a home automation device comprising:
- at least one movement detector (20) comprising:
- a housing (22) adapted to be securable to the wing,
- an accelerometer (24) fixed to the housing and adapted to provide acceleration signals, representative of the acceleration of the housing along at least one fixed direction of the housing relative to the frame,
- a magnetometer (25) fixed to the housing and adapted to provide orientation signals, representative of the instantaneous orientation of at least one fixed direction of the housing relative to an Earth's local magnetic field;
- and
- a processing unit (21) for processing the signals provided by the accelerometer and by the magnetometer,
- in which method:
- a predetermined reference orientation, of the housing relative to the Earth's local magnetic field is stored,
- the acceleration signals at least are processed by the processing unit, the processing unit being adapted to be able to identify a predetermined reference event, from said acceleration signals, and
- on detection of the predetermined reference event, the instantaneous orientation of the housing is stored as a reference orientation.
Dependencies are inferred from the claim text.