Abstract: An apparatus and a method for measuring the RPM of a fan by using an IR-UWB radar are disclosed. The disclosed apparatus comprises: a radar signal variance acquisition unit which receives a reflected signal of an IR-UWB radar to acquire the variance of a signal at each location; a fan location acquisition unit for acquiring a first location and a second location, associated with the location of a fan, by using the variance of the signal at each location; an FFT calculation unit which performs FFT calculation for the signal of the first location to acquire a first FFT signal and which performs FFT calculation for the signal of the second location to acquire a second FFT signal; a subtraction unit for subtracting the second FFT signal from the first FFT signal; and an RPM acquisition unit for acquiring the RPM of the fan by using the signal subtracted by the subtraction unit.

Abstract: The present invention can provide an apparatus and a method for non-contact measuring momentum, the apparatus and the method being capable of quantitatively measuring the dynamic activity and static activity of a subject by using a plurality of IR-UWB radars and, particularly, capable of measuring, in real time, some activities of the human body and general activity of the human body by distinguishing moving activity of the subject from non-moving activity. Therefore, the activity of a subject is non-contact measured so as to minimize user inconvenience, thereby facilitating performance of an ADHD test even for a subject in a young age group, and thus ADHD can be diagnosed early.

Abstract: Provided is a method and device for recognizing a pointing location by using a radar. A device according to an embodiment of the present disclosure comprises: a weight value space generation unit for generating a weight value space comprising a plurality of unit spaces in a space in front of the screen, and setting weight values in proportion to intensity of clutter-removed reception signals of the plurality of radars to the unit spaces; a hand area detection unit for adding up the set weight values for each of the unit spaces of the weight value space; an effective radar selection unit for selecting, as an effective radar, a radar having a shortest distance to the detected hand area among the plurality of radars; and a finger position determination unit for detecting a first location (first path) exceeding a predetermined threshold value.

Abstract: Disclosed is an apparatus for detecting fall and rise. The apparatus includes a first sensor unit disposed at a first height and configured to sense a movement of a resident, a second sensor unit disposed at a second height higher than the first height and configured to sense the movement of the resident, and a controller configured to sense a falling behavior and a rising behavior of the resident based on distances from the resident measured by the first sensor unit and the second sensor unit. The controller sets the first sensor unit and the second sensor unit such that, among three axis coordinates of the first sensor unit and the second sensor unit in a 3D orthogonal coordinate system, two axis coordinates thereof coincide with each other.

Abstract: Provided is a method and device for recognizing a pointing location by using a radar. A device according to an embodiment of the present disclosure comprises: a weight value space generation unit for generating a weight value space comprising a plurality of unit spaces in a space in front of the screen, and setting weight values in proportion to intensity of clutter-removed reception signals of the plurality of radars to the unit spaces; a hand area detection unit for adding up the set weight values for each of the unit spaces of the weight value space; an effective radar selection unit for selecting, as an effective radar, a radar having a shortest distance to the detected hand area among the plurality of radars; and a finger position determination unit for detecting a first location (first path) exceeding a predetermined threshold value.