Methods and apparatus for detecting presence of an object in an environment
AssigneeRichWave Technology Corp.
InventorSheng Chung Kuo
Life of this patent
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Abstract
Methods and apparatus for detecting presence of an object in an environment, the method including receiving a Doppler signal during a frame in frequency domain, separating the Doppler signal in the frequency domain into a plurality of sub-band signals, determining a plurality of sub-band signal energies corresponding to the plurality of sub-band signals, determining whether motion of the object is detected in accordance with one of the plurality of sub-band signal energies and a baseline energy, and responsive to a determination that motion of the object is detected, setting a flag of object presence.
Claims20
A method for detecting presence of an object in an environment, comprising:
- receiving a Doppler signal during a frame in frequency domain;
- separating the Doppler signal in the frequency domain into a plurality of sub-band signals;
- determining a plurality of sub-band signal energies corresponding to the plurality of sub-band signals;
- determining whether motion of the object is detected in accordance with one of the plurality of sub-band signal energies and a baseline energy;
- and
- responsive to a determination that motion of the object is detected, setting a flag of object presence.
A method for detecting presence of an object in an environment, comprising:
- receiving a Doppler signal in time domain;
- determining whether motion of the object is detected in accordance with the Doppler signal in the time domain and a first baseline energy;
- responsive to a determination that motion of the object is detected in accordance with the Doppler signal in the time domain and the first baseline energy, setting a first flag of object motion;
- transforming the Doppler signal in the time domain to a Doppler signal in frequency domain;
- determining whether motion of the object is detected in accordance with the Doppler signal in the frequency domain and a second baseline energy;
- responsive to a determination that motion of the object is detected in accordance with the Doppler signal in the frequency domain and the second baseline energy, setting a second flag of object motion;
- and
- setting a flag of object presence based on the first flag of object motion and the second flag of object motion.
An apparatus for detecting presence of an object in an environment, the apparatus comprising:
- a memory storing instructions;
- and
- a processor configured to execute the instructions to cause the apparatus to:
- receive a Doppler signal during a frame in frequency domain;
- separate the Doppler signal in the frequency domain into a plurality of sub-band signals;
- determine a plurality of sub-band signal energies corresponding to the plurality of sub-band signals;
- determine whether motion of the object is detected in accordance with one of the plurality of sub-band signal energies and a baseline energy;
- and
- responsive to a determination that motion of the object is detected, set a flag of object presence.
Dependencies are inferred from the claim text.