Abstract: Methods and systems for monitoring a subject in a resting state using one or more range-controlled radars are presented. The radars non-invasively detect one or more motion and/or physiological parameters corresponding to the subject. The motion parameters comprise one or more activity levels and the physiological parameters comprise one or more of heartbeat and respiration. Further, one or more patterns in the motion parameters detected over a designated motion period of time are determined. Additionally, one or more patterns in the physiological parameters detected over the designated physiological period of time are also determined. The systems then assess a health condition of the subject based on the determined patterns of the motion parameters and/or the determined patterns of the physiological parameters.

Abstract: A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor.

Abstract: An impedance analyzer is provided. The analyzer includes a signal excitation generator comprising a digital to analog converter, where a transfer function of the digital to analog converter from digital to analog is programmable. The impedance analyzer further includes a receiver comprising a low noise amplifier (LNA) and an analog to digital converter (ADC), where the LNA is a current to voltage converter; where the programmable digital to analog transfer function is implemented by a direct digital synthesizer (DDS) and a voltage mode digital to analog converter, or a digital phase locked loop (PLL), or both. Further, a multivariable sensor node having an impedance analyzer is provided. Furthermore, a multivariable sensor network having a plurality of multivariable sensor nodes is provided.

Abstract: A high frequency current transformer (HFCT) sensor for detecting partial discharges produced by a component is disclosed. The HFCT sensor includes at least one electrically conductive pattern formed on a substrate, where the substrate comprises multiple segmented regions connected by intermediate regions for folding along multiple fold lines between the segmented regions to form the HFCT sensor. A system for monitoring at least one component of an aircraft wiring system is also disclosed. The monitoring system includes at least one of the HFCT sensors for detecting partial discharges produced by the aircraft wiring system component. The monitoring system further includes a data acquisition system configured to monitoring signals from the HFCT sensor(s).

Abstract: Embodiments of devices, methods, and non-transitory computer readable media for monitoring a subject are presented. The monitoring device includes at least one sensor configured to monitor one or more physiological parameters of a subject and a processing unit operatively coupled to the sensor. The sensor comprises a plurality of radiation sources and detectors disposed on a flexible substrate in a designated physical arrangement. The processing unit is configured to dynamically configure an operational geometry of the sensor by controlling the intensity of one or more of the radiation sources and the gain of one or more of the detectors so as to satisfy at least one quality metric associated with one or more physiological parameters of the subject.

Abstract: A system and method for transducer placement in soft-field tomography are provided. One system includes a plurality of transducers configured for positioning at a surface of an object in a non-soft-field tomography configuration. The system also includes an interface and a processor communicating with the plurality of transducers via the interface. The processor is configured to perform soft-field sensing using soft-field data acquired by the plurality of transducers.

Abstract: A system and method for determining physiological parameters based on electrical impedance measurements is provided. One method includes obtaining electrical measurement signals acquired from a plurality of transducers coupled to a surface of an object and spatially pre-conditioning the obtained electrical measurement signals. The method also includes performing multiple-input-multiple-output (MIMO) analog to information conversion (AIC) of the spatially pre-conditioned electrical measurement signals to correlate the spatially pre-conditioned electrical measurement signals to separate the electrical measurement signals.

Abstract: Methods and systems for monitoring a subject in a resting state using one or more range-controlled radars are presented. The radars non-invasively detect one or more motion and/or physiological parameters corresponding to the subject. The motion parameters comprise one or more activity levels and the physiological parameters comprise one or more of heartbeat and respiration. Further, one or more patterns in the motion parameters detected over a designated motion period of time are determined Additionally, one or more patterns in the physiological parameters detected over the designated physiological period of time are also determined The systems then assess a health condition of the subject based on the determined patterns of the motion parameters and/or the determined patterns of the physiological parameters.

Abstract: Methods, systems and non-transitory computer readable mediums that store instructions executable by one or more processors to perform a method for detecting a fallen person are presented. The present technique includes identifying a reference plane and a reference line in a designated space monitored using one or more range-controlled radars. These radars are coupled to one or more antennas configured to define fields of the range-controlled radars to one or more portions of the designated space, where at least one portion corresponds to the reference plane. The range-controlled radars detect presence of one or more parameters corresponding to a subject disposed in the designated space. The parameters, for example, include one or more physiological parameters and one or more motion parameters. The range-controlled radars then identify the subject as the fallen person if the one or more physiological parameters corresponding to the subject are detected proximate the reference plane.

Abstract: A system for monitoring physiology, having: a RADAR transmitter and a RADAR receiver; a state estimation module configured to process a returned RADAR signal to detect a presence of motion and set a motion state upon said presence of motion, said state estimation module configured to detect a presence of one or more physiological parameters including heartbeat and respiration, and said state estimation module configured to assign a still state or a concern state based on said presence of physiological parameters; a rate estimation module configured to estimate one or more estimated physiological rates including an estimated respiration rate and an estimated heart rate; and an alerting module configured to provide an alert if an alert value exceeds an alert value threshold, wherein the alert value is derived from at least one of the motion state, concern state, still state and the estimated physiological rates.

Abstract: A system and method for determining physiological parameters based on electrical impedance measurements is provided. One method includes obtaining electrical measurement signals acquired from a plurality of transducers coupled to a surface of an object and constructing a system matrix to define one or more relationships between the impedance measurement signals. The method also includes decomposing the system matrix to separate the electrical measurement signals.

Abstract: A field-portable impedance reader is provided. The impedance reader comprises a reader antenna, an impedance compensator, a calibrator, and a synchronous sampler. The impedance reader further comprises a digital processor that receives and processes signals from the synchronous sampler. Further, a wireless system comprising the impedance reader of the invention is provided.

Abstract: A high frequency current transformer (HFCT) sensor for detecting partial discharges produced by a component is disclosed. The HFCT sensor includes at least one electrically conductive pattern formed on a substrate, where the substrate comprises multiple segmented regions connected by intermediate regions for folding along multiple fold lines between the segmented regions to form the HFCT sensor. A system for monitoring at least one component of an aircraft wiring system is also disclosed. The monitoring system includes at least one of the HFCT sensors for detecting partial discharges produced by the aircraft wiring system component. The monitoring system further includes a data acquisition system configured to monitoring signals from the HFCT sensor(s).

Abstract: Embodiments of the invention include a system and a method for determining whether a person is carrying concealed contraband, such as an improvised explosives device or other weapon. The system includes a people tracking video subsystem, a people tracking decisioning subsystem, a concealed contraband detection aiming subsystem, and a concealed contraband detection decisioning subsystem.

Abstract: A method for enhancing pace pulses is presented. The method includes providing a set of digital electrocardiogram data comprising a plurality of pulses, wherein each pulse is of a generally constant width. Furthermore, the method includes differentiating the plurality of pulses to generate a plurality of pairs of differentiated pulses, wherein each pair of differentiated pulses is separated by the generally constant width of the corresponding pulse. In addition, the method includes enhancing the plurality of pairs of differentiated pulses. Systems and computer-readable medium that afford functionality of the type defined by this method are also provided by the present technique.

Abstract: A system and method for gathering diagnostic information relating to an operating condition of a gas stream or processing path of a coal gasification system is disclosed. The information is gathered by deploying one or more specially constructed modules or seeds that proceed through the gas stream of the coal gasification system as part of the mass flow of the gas stream. The seed may be physically recoverable in which an outer material of the seed ablates when exposed to a predetermined temperature of the gas stream. The seed may be physically non-recoverable in which electronic circuitry transmits a signal to a receiver relating to the temperature of the gas stream.

Abstract: The present technique provides for the detection of pace pulses in electrocardiogram data. The technique provides for processing one or more sets of electrocardiogram data via a non-linear algorithm. Furthermore, the technique provides for detecting one or more pace pulses in the one or more sets of electrocardiogram data via a non-linear detection algorithm. Systems and computer programs that afford functionality of the type defined by this method are also provided by the present technique.

Abstract: A RADAR system including a set of RADAR apparatuses is disclosed. Each apparatus includes a processor, a pulse unit in signal communication with the processor, a waveform signal generator in signal communication with the pulse unit, and a set of radar antennas in signal communication with the waveform signal generator. The waveform signal generator is capable of generating a waveform signal in response to pulses provided by the pulse unit. The set of antennas is capable of transmitting a burst of microwave energy in response to each waveform signal and to receive a plurality of reflected bursts associated with the transmitted bursts. An acquisition unit is configured to develop and amplify a finite window integral associated with each reflected burst, the acquisition unit in signal communication with the set of antennas and a pre-processor configured to digitize and store information relating to each finite window integral for subsequent processing.

Abstract: A RADAR system including a set of RADAR apparatuses is disclosed. Each apparatus includes a processor, a pulse unit in signal communication with the processor, a waveform signal generator in signal communication with the pulse unit, and a set of radar antennas in signal communication with the waveform signal generator. The waveform signal generator is capable of generating a waveform signal in response to pulses provided by the pulse unit. The set of antennas is capable of transmitting a burst of microwave energy in response to each waveform signal and to receive a plurality of reflected bursts associated with the transmitted bursts. An acquisition unit is configured to develop and amplify a finite window integral associated with each reflected burst, the acquisition unit in signal communication with the set of antennas and a pre-processor configured to digitize and store information relating to each finite window integral for subsequent processing.

Abstract: A system for determining a state of a door having a locking mechanism for locking the door includes a locking mechanism and a door sensor. The locking mechanism sensor is disposed for sensing a condition of the locking mechanism and generating a signal indicative thereof. The door sensor disposed for sensing a condition of the door and generating a signal indicative thereof. The system further includes a processor for determining a state of the door, in response to the signals from the locking mechanism sensor and the door sensor. The state of the door is a secured state when the door sensor senses the condition of the door as closed and the locking mechanism sensor senses the condition of the locking mechanism as locked. A method for determining a state of a door having a locking mechanism for locking the door includes sensing a condition of the locking mechanism and sensing a condition of the door.