20results about "Microwave sensors" patented technology

A method for non-invasively identifying a location of a mass or tumor including: providing a patient with a possible mass or tumor; providing a detector including one or more resonant sensors, each sensor including at least one loop resonator, at least one cavity resonator, or at least one waveguide resonator; detecting resonant frequencies at different locations on the patient's skin near locations of the mass or possible tumor; and locating the mass or tumor by noting a location of an atypical resonant frequency.

A system for monitoring anxiety of an individual includes a chair having at least a seat and a back, a base supporting the chair, and a first sensor disposed in at least one of the seat or the back. The first sensor is configured to, without being in direct contact with the individual, continuously obtain data related to a first physical characteristic from the individual seated in the chair. The first physical characteristic is one of respiration or pulse rate. The system further includes a display and a controller. The controller is configured to receive, in real-time, the data related to the first physical characteristic from the first sensor and compile a first metric from the received data. The first metric is configured to visually represent a change in the first physical characteristic. The controller is further configured to output the first metric to the display in realtime.

An electromagnetic receiving device configured to discriminately react predominantly to an external electric field directed along an axis of said device, comprising a high-permittivity dielectric rod as receiving element, wherein said dielectric rod is oriented along said axis and has a receiving end to be directed towards an object under study, and wherein the device is configured to be essentially resonant with a circularly cylindrical TM00 mode.

A hydration level tracking system and method measures microwave energy accepted by skin in a desired target area of a user or patient in order to determine, in real time and in vivo, representative hydration levels. A measurement unit comprises a transmitter operatively connected to an antenna to deliver energy towards appropriate layer. The measurement unit determines an accepted energy power value of the skin associated with the desired target area. This measurement energy power value is compared with a calibration value, and the difference is used to determine a representative hydration level value. The determined hydration value may further be acclimatized using additional sensed values compensating for biological and ambient factors relevant to the patient. The final determined hydration level value can be displayed for reading and / or transmitted and stored for recording for further reference.

Cardiovascular or respiratory data of a subject is measured using a multi-sensor system. The multi-sensor system includes a mm-wave FMCW radar sensor, an IMU sensor, and one or more proximity sensors. The mm-wave FMCW radar sensor may be selected and its view angle adjusted based on positioning data regarding the subject obtained from the one or more proximity sensors. Each of the mm-wave FMCW radar sensor and the IMU sensor may acquire cardiovascular or respiratory measurements of the subject, and the measurements may be fused for improved accuracy and performance.

The usage of microwave imaging for biomedical (BMWI) applications is still challenging due to the imprecise reconstruction of the relative permittivity of tissues and the ill-posed inverse scattering problem. Anomaly detection in biological tissues demand in-vivo, non-invasive, and non-contact measurements. Considering and proving the anomaly as a point object in the microwave imaging is erroneous and results in false implications about the anomaly's presence, location, and characteristics. Present disclosure provides systems and methods for anomaly detection in biological tissues. An intensity map of target region is generated to detect tumor. Area around the tumor is processed to obtain a refined image. As the tumor is embedded in tissues of higher dielectric constant, image thus formed is larger in size than actual tumor. An iterative numerical computation method is implemented to estimate relative permittivity. Subsequently, the effective size of the anomaly is approximately estimated, which is close to their actual values.

A hydration level tracking system and method measures microwave energy accepted by skin in a desired target area of a user or patient in order to determine, in real time and in vivo, representative hydration levels. A measurement unit comprises a transmitter operatively connected to an antenna to deliver energy towards appropriate layer. The measurement unit determines an accepted energy power value of the skin associated with the desired target area. This measurement energy power value is compared with a calibration value, and the difference is used to determine a representative hydration level value. The determined hydration value may further be acclimatized using additional sensed values compensating for biological and ambient factors relevant to the patient. The final determined hydration level value can be displayed for reading and / or transmitted and stored for recording for further reference.

To provide embodiments for managing operations of sensors in an electronic device.SOLUTION: According to certain aspects, an electronic device may detect a change in motion from an initial set of sensor data generated by a sensor(s). A memory cache may store the initial set of sensor data or additional sensor data generated by the sensor(s). The electronic device may initiate a supplemental algorithm that analyzes cached data. On the basis of, the analysis of the cached data and whether the change in motion has been confirmed or whether additional motion has been detected, the electronic device may manage an operation of the supplemental algorithm.SELECTED DRAWING: Figure 2

The present invention aims at a vital information acquisition apparatus, comprising: a microwave radar system which includes at least one transmitting antenna and at least one receiving antenna and is configured to transmit a plurality of microwaves to a subject and receive a plurality of microwaves reflected by the subject; and a controller comprising circuitry configured to convert a plurality of received microwaves to a plurality of radar signals, store the radar signals, calculate the phase signals of the radar signals, and calculate the first- or higher-order derivatives of each phase signal, and estimate heartbeat intervals and / or respiratory intervals from the phase signals and / or their derivatives using one of periodicity detection techniques; the periodicity finding techniques include autocorrelation, frequency analysis using Fourier transform, and zero-crossing detection algorithm. Another aspect of the present invention is a vital information acquisition method that stores the radar signals, calculates the phase signals of the radar signals, and calculates the first- or higher-order derivatives of each phase signal, and estimates heartbeat intervals and / or respiratory intervals from the phase signals and / or their derivatives using one of periodicity detection techniques; the periodicity finding techniques include autocorrelation, frequency analysis using Fourier transform, and zero-crossing detection algorithm.

The usage of microwave imaging for biomedical (BMWI) applications is still challenging due to the imprecise reconstruction of the relative permittivity of tissues and the ill-posed inverse scattering problem. Anomaly detection in biological tissues demand in-vivo, non-invasive, and non-contact measurements. Considering and proving the anomaly as a point object in the microwave imaging is erroneous and results in false implications about the anomaly's presence, location, and characteristics. Present disclosure provides systems and methods for anomaly detection in biological tissues. An intensity map of target region is generated to detect tumor. Area around the tumor is processed to obtain a refined image. As the tumor is embedded in tissues of higher dielectric constant, image thus formed is larger in size than actual tumor. An iterative numerical computation method is implemented to estimate relative permittivity. Subsequently, the effective size of the anomaly is approximately estimated, which is close to their actual values.

A computer-implemented process for electromagnetic imaging, the process including the steps of: accessing scattering data representing at least a two-dimensional array of measurements of electromagnetic wave scattering by internal features of an object, wherein each said measurement represents scattering of electromagnetic waves emitted by a corresponding antenna of an array of antennas disposed about the object as measured by a corresponding antenna of the array of antennas; and processing the scattering data to generate image data representing a spatial distribution of internal features of the object, wherein the generation of the image data does not involve tomographic reconstruction but is in accordance with a weighted mapping to directly map the measurements of electromagnetic wave scattering to a corresponding spatial distribution of electromagnetic wave scattering by the internal features of the object that corresponds to the physical shape of the object to enable the detection, localization, size estimation, shape estimation and classification of one or more features of interest of the object.

A single non-thermal atmospheric plasma generation device is used to detect and analyze vital fields of a living subject to determine the presence of a condition, such as an illness or injury, and responsively modify characteristics of the plasma to treat, heal, or alleviate the condition. The device includes a capacitance dielectric discharge array of plasma emitters, and a controller having a power supply, a transformer, and circuit components for driving the transformer at a resonant frequency of the plasma emitters to cause the plurality of plasma emitters to ionize surrounding air and produce the non-thermal plasma. The resonant frequency is around 60 GHz and harmonics thereof. A receiver of the device recovers frequency mixing products from the plasma, which are extracted by signal processing circuitry; signals in the VHF and UHF bands are extracted and analyzed to determine whether signatures of particular vital fields are present.

A computer-implemented process for electromagnetic imaging, the process including the steps of: accessing scattering data representing measurements of electromagnetic wave scattering by internal features of an object, each said measurement representing scattering of electromagnetic waves emitted by a corresponding antenna of an array of antennas disposed about an imaging domain containing at least a portion of the object, and as measured by a corresponding antenna of the array of antennas; and processing the scattering data to generate image data representing a spatial location and size of at least one internal feature of the object within the imaging domain; wherein the processing includes applying a trained message-passing graph neural network (GNN) to a graph of nodes representing spatial locations of the antennas and edges representing the measurements.

A system includes a control unit configured to be worn by a subject including one or more processors operatively coupled to a memory, a wireless transceiver, and a power supply for powering the one or more processors. The system also includes a computing device independent of the control unit including one or more processors operatively coupled to a memory, a wireless transceiver in communication with the wireless transceiver of the control unit, and a display. The system further includes at least one primary sensor and at least one secondary sensor mountable relative to the subject configured to generate respective primary and secondary signals and to communicate the primary and secondary signals to one of the control unit and the computing device.

The system and methods of the present invention use sensor hardware, software, and connectivity, both between sensors and with occupants of the commercial, private, or public building, for building service utilization and capacity optimization and for personal and mass safety. One or more clusters of different sensor types are deployed in an indoor setting and can be used to nurture, protect, and assist occupants of that indoor setting. The human-centric concepts herein are also shown to be applicable to both medical triage and transportation settings.

A frequency-modulated continuous wave radar device and a method for detecting life information and humidity are disclosed. The method includes transmitting an incident radar signal to a field to detect a reflected radar signal reflected by an object under test and a reflected radar signal reflected by a humidity sensing tag, thereby obtaining life information of the object under test and humidity information detected by the humidity sensing tag.

Embodiments are provided for managing the operation of sensors in an electronic device. According to certain aspects, the electronic device may detect a change in motion from an initial set of sensor data generated by a sensor} s). A memory cache may store the initial set of sensor data or additional sensor data generated by the sensor(s). The electronic device may initiate a supplemental algorithm that analyzes the cached data. Based on the analysis of the cached data and whether the change in motion is confirmed or whether additional motion is detected, the electronic device may manage the operation of the supplemental algorithm.

Disclosed are systems and methods for microwave scanning of biological tissue that allow the tissue's response to a microwave signal to be measured without other unwanted signals, thereby eliminating the need for suboptimal filtering techniques. The collected signals can be conditioned using novel techniques. Disclosed are also systems and methods for reconstructing images of biological tissue that provide quantitative images related to the electrical properties of the tissue in a repeatable and stable manner.

Disclosed are systems and methods of microwave scanning of biological tissue, which enable the measurement of biological tissue response to microwave signals without other unwanted signals, hence removing the need for suboptimal filtering techniques. The collected signals may be conditioned using novel techniques. Also disclosed are systems and methods of image reconstruction of biological tissues, which provide quantitative images related to the electrical properties of the tissues with a repeatable and stable technique.