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US 2020/0091617 A1Published application
Embedded Downlight and Radar System
AssigneeInfineon Technologies AG
InventorsHo Chun Lee, Chung Hong Wong
Life of this patent
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Abstract
In an embodiment, a downlight includes: a plurality of light emitting diodes (LEDs) disposed in a housing of the downlight, and a millimeter-wave radar. The millimeter-wave radar includes: an antenna disposed in the housing, a controller configured to: detect a presence of a human in a field-of-view of the millimeter-wave radar, determine a direction of movement of the detected human, and produce log data based on the direction of movement of the detected human, and a wireless module configured to transmit the log data to a wireless server.
Claims26
A downlight comprising:
- a plurality of light emitting diodes (LEDs) disposed in a housing of the downlight;
- and
- a millimeter-wave radar comprising:
- an antenna disposed in the housing,
- a controller configured to:
- detect a presence of a human in a field-of-view of the millimeter-wave radar,
- determine a direction of movement of the detected human, and
- produce log data based on the direction of movement of the detected human, and
- a wireless module configured to transmit the log data to a wireless server.
6 more elements
A method comprising:
- detecting a presence of a human in a field-of-view of a millimeter-wave radar embedded in a housing of a downlight;
- determining a direction of movement of the detected human;
- producing log data based on the direction of movement of the detected human;
- and
- transmitting the log data to a server using a wireless transmission channel.
2 more elements
A method comprising:
- determining whether humans are entering or exiting a building using millimeter-wave radars embedded in respective housings of respective downlights of a plurality of downlights located at entrances of the building;
- calculating a first number of humans entering the building during a first period of time;
- calculating a second number of humans exiting the building during the first period of time;
- and
- controlling a brightness of light produced by the plurality of downlights based on the first and second number of humans.
2 more elements
Dependencies are inferred from the claim text.