Hardware and software methodology are described for non-invasively monitoring cardiac health. Hemodynamic waveforms variously acquired for a subject are analyzed to calculate or approximate intrinsic frequencies in two domains in two domains across the Dicrotic Notch. Together with associated notch timing, heart rate and blood pressure values left ventricle ejection fraction and/or stroke volume can be determination.

The present invention discloses a mm-wave radar sensor to be deployed in the vehicles for sensing driver fatigue. The key system relevant components are utilization of mm-wave integrated radar, with specific planar high gain antenna radiation pattern, by analyzing at least two major biometric parameters of the drives simultaneously: heartbeat and respiratory dynamics. The method of operation calculates probability of the fatigue event. In case that probability is above a predefined threshold, the interaction with vehicle control system is initiated, using typical arbitrary automotive interfaces. Corresponding predefined actions are taken in that case. The predefined actions could be one or combination of the following: driver safety belt pulling, audio signal alerts to driver, vibration alert to driver, inside cabin light condition changes, engine operation condition change, corresponding communication using arbitrary wireless means to outside vehicle environment. Optionally, the system is utilizing additional driver imposed parameters like acceleration sensor information. Preferably, the system is using 60 GHz or 77-79 GHz integrated radar front end working in Doppler operation mode, with 44 Tx and Rx planar radiation elements, with physical size typically in the range 421 cm, or smaller.

An apparatus detects and measures vital signs of each human target by a continuous, non-intrusive method. In an example, the vital signs of interest include a heart rate and a respiratory rate, which can provide valuable information about the human's wellness. Additionally, the heart rate and respiratory rate can also be used to identify a particular person, if more than two target humans are living in a home. The apparatus has a natural convection spatial flow path that draws heat from at least one processor, one fan-less radar and a heat sink.

Sensors that detect an analyte via spectroscopic techniques using non-optical frequencies such as in the radio or microwave frequency range of the electromagnetic spectrum or optical frequencies in the visible range of the electromagnetic spectrum. An analyte sensor described herein includes a detector array having at least one transmit element and at least one receive element. The transmit element and the receive element can be antennas or light emitting elements such as light emitting diodes. The sensor is controlled to implement first and second frequency sweeps and the frequency sweeps have at least one overlapping range of frequencies where the operation times are the same between the first and second frequency sweeps.

A sensor may be configured to detect periodic limb movement in a sleeping person. The sensor may be a non-contact sensor, such as a radar motion sensor. The sensor may include a radio frequency transmitter for emitting radio frequency signals toward the person. The sensor may include a receiver for receiving reflected ones of the emitted radio frequency signals and processing the reflected ones of the emitted radio frequency signals to produce motion signal(s). A processor, such as one integrated with or coupled to the sensor, may evaluate the motion signals, such as in-phase and quadrature motion signals, and generate an indicator to identify occurrence of periodic limb movement in the motion signals based on the evaluation of the motion signals.

A method and system for extracting a target signal based on maximum correlated kurtosis deconvolution are provided, which relate to a field of signal processing. The method includes: obtaining a microwave signal of a brain of a subject to be tested; filtering the microwave signal by using maximum correlated kurtosis deconvolution to obtain a filtered signal; performing mode decomposition on the filtered signal by using a complete ensemble empirical mode decomposition with adaptive noise to obtain a target response signal; and performing image reconstruction on the target response signal by using a delay sum beamforming to obtain a target bleeding image.

Exemplary imaging systems, apparatus, and methods may include a plurality of reconfigurable antenna assemblies. The reconfigurable antenna assemblies may each include one or more antennas. The antennas may be configured in a plurality of states including a passive state in which the antenna may not perturb the electromagnetic field. The antennas may be positioned about a measurement domain such as, e.g., a conductive measurement chamber.

The invention describes a new Imaging modality based on Linear Velocity Imaging Tomography; its applications include differentiating between malignant and benign tissues, the ability to correlate an ECG trace with actual disorders of the heart and Imaging Brain communications.

An estimation device includes: M transmission antenna elements each transmitting a first transmission signal; N transmitter-receivers each including a reception antenna element and receiving, over a predetermined period, a first reception signal including a reflection signal that is the first transmission signal reflected by a first living body, using the reception antenna element; a memory storing training signals that are second reception signals obtained by causing the N transmitter-receivers to preliminarily receive second reception signals including reflection signals that are second transmission signals transmitted from the M transmission antenna elements to a second living body and reflected therefrom; a first vector calculator calculating a first vector for each training signal and each first reception signal by respective predetermined methods; and a circuit identifying the first living body or estimating an orientation of the first living body by a predetermined method, using correlation coefficients calculated from the first vectors.

An apparatus for determining characteristics of pulsatility of the brain (5) comprises: an ultra-wideband microwave transceiver (1) arranged to generate ultra-wideband microwave pulses (6); a transmitting means (3) arranged to transmit the ultra-wideband microwave pulses; and a receiving means (3) arranged to receive a signal corresponding to detection of the pulses. A method of determining characteristics of pulsatility of a first part of the brain comprises: transmitting ultra-wideband microwave pulses into the first part of the brain; receiving a signal corresponding to detection of the pulses; and processing the signal.