Fujitsu Corporation

Lili Xie

Jun Tian

Qian Zhao

Hongchun Li

Genming Ding

Embodiments of this disclosure provide a motion state detection apparatus and method based on wireless signals and a system, in which variations of energy distribution of reflection points with time are calculated according to wireless signals reflected from a space where an object that is detected is located, and a motion state of the object is determined according to the variations. Thus, the training of the recognition model is not needed, the detection process is simple and detection results are reliable, and are applicable to various different application scenarios.

Motion state detection apparatus and method based on wireless signals and system

Embodiments of this disclosure provide a radar-based posture recognition apparatus, method and an electronic device. The method includes: acquiring radar reflection point information based on radar echo signals reflected from a detected target, and clustering radar reflection points; in a first time period, calculating spatial morphological feature information and/or motion feature information of a target point set obtained by clustering; in a second time period, counting the spatial morphological feature information and/or the motion feature information of a plurality of first time periods to obtain motion process feature information in the second time period; and taking the motion process feature information within a second time period in which a current moment is present and the spatial morphological feature information and/or the motion feature information in a first time period in which the current moment is present as a feature set, to determine the posture of the detected target.

Radar-based posture recognition apparatus and method and electronic device

Embodiments of this disclosure provide a living object detection method and apparatus and electronic device. The apparatus includes a processor to calculate a distance matrix according to variance of Fourier transform amplitude values of radio signals received by a radio signal receiver within a determined period of time; and to calculate a distance between an object among objects and the radio signal receiver according to the distance matrix. According to this disclosure, a position of a living object among the objects may be detected based upon the distance in multiple scenarios.

Living object detection method and apparatus and electronic device

Embodiments of this disclosure provide a fall detection method and apparatus. The apparatus acquires information of radar reflection points belonging to a detected object in a predetermined number of consecutive frames, information on a radar reflection point including at least two of information on a position, information on a radial velocity and information on reflection signal strength, of the reflection point; determines whether the detected object has fallen according to a relationship between time and the information on radar reflection points in the predetermined number of consecutive frames.

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Beijing, China

Lili Xie