US 11,448,745 B2 · Sensor device and system, and biometric sensing method and system

Abstract

An FMCW radar is used to sense an object. A sensor device that senses an object by using an FMCW radar is provided. The sensor device includes: a signal processing unit that acquires a reception signal that is based on a reception wave of the FMCW radar, and senses the object; and a phase converting unit that acquires phase information from the reception signal, and tracks the object by monitoring a peak BIN, and a phase offset between the peak BIN and another BIN based on the phase information. As the reception signal, the signal processing unit may use micro-vibration data about the object to sense the object. A system including: a transceiving unit that transmits and receives an FMCW radar signal; and the sensor device according to the first aspect of the present invention is provided.

Claims13

Dependent claims

A sensor device that senses an object by using an FMCW radar, the sensor device comprising:

one or more processors;
a signal processing unit that uses the one or more processors to acquire a reception signal that is based on a reception wave of the FMCW radar, and sense the object;
and
a phase converting unit that uses the one or more processors to acquire phase information from the reception signal, and track the object by monitoring a peak BIN, and a phase offset between the peak BIN and an adjacent BIN based on the phase information, wherein
the phase converting unit further uses the one or more processors to maintain continuity of the phase information between the peak BIN and the adjacent BIN based on the monitored phase offset when a position of a peak in a distance power spectrum shifts from the peak BIN to the adjacent BIN.

2 more elements

Dependencies are inferred from the claim text.

Sensor device and system, and biometric sensing method and system

Life of this patent

Sensor device and system, and biometric sensing method and system

Life of this patent

Abstract

Claims13