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US 11,456,713 B2Granted
Low power mode of operation for mm-wave radar
AssigneeTexas Instruments Incorporated
InventorsSandeep Rao, Brian Ginsburg
Life of this patent
Estimating the term…
Abstract
Disclosed examples include a radar system that operates in a first mode and a second mode. In the first mode, the system detects the presence of an object within a threshold range. In response to detection of the presence of the object, the system transitions to the second mode, and the system generates range data, velocity data, and angle data of the object in the second mode. When the object is no longer detected within the threshold range, the system transitions back to the first mode.
Claims20
A method comprising:
- transmitting, by a radar system in a first mode, a first transmission that includes a first frame and a second frame temporally separated by a first sleep time interval;
- receiving, by the radar system in the first mode, a first reflected signal based on the first transmission;
- detecting an object based on the first reflected signal;
- in response to the detecting of the object, transitioning the radar system to a second mode;
- transmitting, by the radar system in the second mode, a second transmission that includes a third frame and a fourth frame temporally separated by a second sleep time interval;
- receiving, by the radar system in the second mode, a second reflected signal based on the second transmission;
- and
- determining an attribute of the object based on the second reflected signal, wherein the first mode is different from the second mode in at least one of:
- a duration of the first frame and the second frame compared to a duration of the third frame and the fourth frame or the first sleep time interval compared to the second sleep time interval.
6 more elements
A device comprising:
- a processor;
- a transmitter circuit coupled to the processor;
- and
- a receiver circuit coupled to the processor, wherein the processor is configured to:
- operate in a first mode to:
- control the transmitter circuit to transmit a first set of frames such that frames of the first set of frames are separated by a first sleep time interval;
- receive, via the receiver circuit, a first reflected signal based on the first set of frames;
- detect an object based on the first reflected signal;
- and
- in response to the detection of the object, transition from the first mode to a second mode;
- and
- operate in the second mode to:
- control the transmitter circuit to transmit a second set of frames such that frames of the first set of frames are separated by a second sleep time interval;
- receive, via the receiver circuit, a second reflected signal based on the second set of frames;
- and
- determine an attribute of the object based on the second reflected signal, wherein the first mode is different from the second mode in at least one of:
- a frame duration of first set of frames compared to a frame duration of the second set of frames or the first sleep time interval compared to the second sleep time interval.
14 more elements
A device comprising:
- a processor;
- a transmitter circuit coupled to the processor;
- and
- a receiver circuit coupled to the processor that includes a set of amplifiers, wherein the processor is configured to:
- control the transmitter circuit to transmit a first set of frames;
- receive, via the receiver circuit, a first reflected signal based on the first set of frames by amplifying the first reflected signal using the set of amplifiers according to a first gain setting;
- detect an object based on the first reflected signal;
- control the transmitter circuit to transmit a second set of frames;
- receive, via the receiver circuit, a second reflected signal based on the second set of frames by amplifying the second reflected signal using the set of amplifiers according to a second gain setting that is different from the first gain setting;
- and
- determine an attribute of the object based on the second reflected signal.
8 more elements
Dependencies are inferred from the claim text.