94 results about "Temperature mapping" patented technology

The temperature mapping balloon of the present invention provides a device for locating inflammation and increased metabolic activity associated with conditions such as vulnerable plaque, by mapping temperature of a body lumen, such as an artery or blood vessel. The temperature mapping balloon comprises a balloon with a thermal mapping coating disposed on the inside or outside of the balloon. The thermal mapping coating can be a thermochromic coating that changes color in response to temperature or a sensor coating comprising a plurality of temperature sensors.

Systems and methods using magnetic resonance imaging for monitoring the temperature of a tissue mass being heated by energy converging in a focal zone that is generally elongate and symmetrical about a focal axis. A first plurality of images of the tissue mass are acquired in a first image plane aligned substantially perpendicular to the focal axis. A cross-section of the focal zone in the first image plane is then defined from the first plurality of images. A second plurality of images are acquired of the tissue mass in a second image plane aligned substantially parallel to the focal axis, the second image plane bisecting the first image plane at approximately a midpoint of the defined focal zone cross-section.

A method of managing conditions in a data center comprises storing information relating to field replaceable unit thermal properties in at least one field replaceable unit non-volatile memory and generating information for real-time dynamic temperature mapping of the data center based on the field replaceable unit thermal property information.

The present invention provides for a method of three dimensional temperature monitoring based in hyperthermic procedures, the heat dissipation, and therefore, temperature variations, does not change dramatically over a spatial region and, second, temperature change, which manifests itself as the phase change, has different characteristics compared to the anatomic magnitude image. Therefore the present invention exploits these facts to provide a method for acquiring the temperature map of three orthogonal planes nearly simultaneously.

A temperature measurement probe for a patient is provided. The probe includes a sensor assembly and produces a temperature map comprising temperature information for multiple patient locations.

Apparatus and method for temperature mapping a rotating component (12) in a high temperature combustion environment. The apparatus includes a thermal imager (14) having a field of view to sense infrared (IR) emissions. Emissivity of a surface of the component is subject to variation in the combustion environment. A radiance emitter (18) defines a spot within the field of view of the thermal imager. The spot indicates a respective emissivity value. A processor (30) is connected to the thermal imager to generate a radiance map of the component based on the IR emissions from the component. The processor includes a thermal calibration module configured to calibrate the radiance map based on the emissivity value of the spot within the field of view of the thermal imager to generate a calibrated thermal map of the component that displays absolute temperature over the surface of the component.

The invention discloses a control method of an air conditioner. The control method comprises the steps that when a preset mode of the air conditioner is started, the current outdoor environment temperature is obtained; an operation mode of the air conditioner is set according to the outdoor environment temperature, and the initial target temperature corresponding to the outdoor environment temperature under the operation mode is determined according to the preset temperature mapping relation; and the air conditioner is controlled to operate according to the initial target temperature so that the indoor and outdoor temperature difference can be smaller than a preset temperature difference. The invention further provides a control device of the air conditioner. By the adoption of the control method and device, the effect that the operation mode and the initial target temperature of the air conditioner are set automatically according to the outdoor environment temperature is achieved, and excessively large indoor and outdoor temperature difference is avoided.

A magnetic resonance method comprises: performing (C1) a magnetic resonance procedure on a calibration subject including an implant device; detecting (C2) a pick-up coil (PUC) signal at least during a radio frequency transmit phase of operation (C1); performing (C3) three dimensional temperature mapping of the calibration subject using a magnetic resonance sequence configured to detect any temperature change induced in any part of the implant device by operation (C1); generating (C4) an unsafe condition criterion (30) for the detected PUC signal based on correlating a PUC signal characteristic detected by operation (C2) with a temperature change detected by operation (C3); performing (M5) the magnetic resonance procedure on a subject containing an implant device; detecting (M6) a PUC signal at least during a radio frequency transmit phase of operation (M5); and monitoring (M7) for an unsafe condition indicated by the PUC signal detected in operation (M6) satisfying the unsafe condition criterion (30).

A footwear system having a plurality of temperature sensors determines the emergence of an ulcer or pre-ulcer on a person's foot. After the plurality of temperature sensors generate a plurality of discrete temperature data values, the system and method form a temperature map representing substantially the actual geometric shape of at least a portion of the foot, and the distribution of temperatures of the at least a portion of the foot. Next, the method and system determine whether the temperature map presents at least one of a plurality of prescribed patterns, and produces output information indicating an emergence of an ulcer or a pre-ulcer on a given portion on the foot. The output information is produced as a function of whether the temperature map is determined to present the at least one of the plurality of prescribed patterns.

Exemplary of the present disclosure can include an apparatus for generating thermal imaging information of a biological structure(s), including detector arrangement(s) which can be configured to receive and detect light radiation(s), a determination arrangement(s) which can be configured to determine a position or an orientation of the detector arrangement(s) with respect to the biological structure(s) to generate data, and a computer arrangement configured to generate the thermal imaging information based on the radiation and the data when the detector arrangement(s) is moved. The thermal imaging information can include a 2-dimension temperature map(s) of a portion(s) of the biological structure(s). The thermal imaging information can include a 3-dimension temperature map(s) of a portion(s)

A control system for an oxygen sensor heater is provided. The control system includes a passive heater control module that generates a heater control signal at a first duty cycle and measures a resistance of the oxygen sensor heater. An exhaust gas temperature mapping module maps the resistance to an exhaust gas temperature. An active heater control module generates a heater control signal at a second duty cycle based on the exhaust gas temperature.

Electrical finite element analysis is carried out on a circuit design, which includes devices, to determine an acceptable power-performance envelope and to obtain data for circuit temperature mapping. A circuit temperature map is developed for the circuit design, based on the data for circuit temperature mapping. Thermo-mechanical finite element analysis is carried out on a package design for the circuit design, based on the circuit temperature map, to determine a package reliability limit based on thermal stress considerations. It is determined whether the package design and the circuit design jointly satisfy: (i) power-performance conditions specified in the acceptable power-performance envelope; and (ii) the package reliability limit based on the thermal stress considerations.

A process is provided for mapping temperatures in an enclosure during a combustion process. A device setting of an image-capturing device is provided. An intensity-temperature mapping is generated by performing an intensity-temperature calibration based on an intensity of an image pixel in a field of view (FOV) generated by the image-capturing device, a corresponding temperature measurement, and a selected device setting. Each emitted radiation of selected regions is detected based on a first image in the FOV. At least one region is determined whether the region is poor responsive, based on the intensity-temperature mapping associated with the device setting. The at least one poor responsive region is replaced with acceptable regions unaffected by the saturation from at least one other image captured at a different device setting for higher temperature resolution.

The invention discloses a method for acquiring transient temperature field of a motor. The method comprises the following steps: S1, acquiring a first finite element model of the motor; S2, performing reduced order processing on the first finite element model to obtain a reduced order model of the motor; S3, solving the reduced order model to obtain a computed result of the reduced order model; S4, mapping the computed result to the first finite element model to obtain the temperature mapping, at different moment, of each node in the first finite element model. Compared with the prior art, the method for acquiring the transient temperature field of the motor, disclosed by the invention, not only is capable of ensuring the accuracy of an acquired result of the transient temperature field but also reducing the amount of computation and increasing the computation efficiency; meanwhile, compared with methods in the prior art, the method for acquiring the transient temperature field of the motor, disclosed by the invention, not only is high in adaptability but also is simple in operation, and higher in operability and practicability.

The invention discloses an energy storage battery stack three-dimensional temperature visualization method based on an infrared image. According to the method, firstly, a surface source blackbody is used as a benchmark to collect grayscale images of an infrared thermal imager under different blackbody temperature, and a temperature and grayscale mapping model is established; the acquired infraredimage is preprocessed, a battery stack surface is separated, then the surface is divided, subunit grayscale is calculated, and battery stack surface temperature is obtained according to the temperature and grayscale mapping model; based on the principle of inverse distance weight interpolation, battery stack three-dimensional temperature is obtained through preliminary interpolation on the batterystack surface temperature, then a battery stack three-dimensional temperature error is obtained according to interpolation on temperature errors of N temperature sensors, a battery stack three-dimensional temperature model is corrected, and reserved output of the temperature sensors is used for evaluating the battery stack three-dimensional temperature model; and the model of a battery in use isused as a benchmark to establish a battery impedance and temperature mapping model, and acquired internal temperature of stereoscopic subunits is used to correct the three-dimensional temperature model. Through the method, qualitative and positioning analysis can be performed on a battery stack thermal fault more intelligently.

The invention relates to a method of MR imaging of an object (10) placed in the examination volume of a MR device (1). It is the object of the invention to provide an improved MR-based temperature mapping method. The method of the invention comprises the steps of: subjecting the object (10) to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is a stimulated echo sequence including: a) at least two preparation RF pulses (a) radiated toward the object (10) during a preparation period (21), and b) one or more reading RF pulses (β) radiated toward the object (10) during an acquisition period (22) temporally subsequent to the preparation period (21); acquiring at least two MR signals during the acquisition period (22), wherein the two MR signals are either (i) a FID signal (I1, FID) and a stimulated echo signal (I2) or (ii) two stimulated echo signals (STE, STE*); and deriving a temperature map indicating the spatial distribution of the temperature within the object (10) from the at least two acquired MR signals. Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).

A mild hyperthermia treatment apparatus (10) includes an imager (12),which generates a planning image (34) and temperature maps (36) of a target region. An array of ultrasonic transducer drivers (52) individually drives ultrasonic transducers of a phased array of ultrasonic transducers (50). One or more processors or units receive a target temperature profile, and calculate power, frequency,and relative phase for the transducer drivers to drive the phased array of ultrasonic transducers to generate a multi-foci sonication pattern configured to heat the target region with the target temperature profile while limiting peak acoustic pressures. During treatment, the imager generates a series of temperature maps which the one or more processors or units compare with the target temperature profile and, based on the comparison, adjust the power, frequency and relative phase with which the transducer drivers drive the ultrasonic transducers.

The present application relates to an ultrasound temperature mapping system and method. The ultrasound temperature mapping system for measuring a temperature of an object comprises an ultrasound transducer and a processing module. The ultrasound transducer is configured to acquire a first image and a second image with respect to the object. The processing module implements a zero-crossing algorithm to process the first image to yield a plurality of first zero-crossing points and implements a cross-correlation algorithm to process the first image and the second images based on the plurality of first zero-crossing points so as to obtain a plurality of displacements. The processing module further calculates the temperature based on the plurality of displacements.

The invention provides a full-MOS voltage and temperature monitoring method and monitoring circuit. The circuit comprises two annular oscillators RO1 and RO2, two time-digital converters TDC1 and TDC2, a temperature mapping module, a voltage mapping module, a reference clock frequency divider module and two compensation modules, wherein a reference block is provided by a crystal oscillator, poweris supplied to the annular oscillator RO1 through a core-domain power supply voltage VDD_CORE, power is supplied to the annular oscillator RO2 through a battery voltage VBAT, the reference clock is separately connected to the TDC1 and the TDC2 through the frequency divider, and output terminals of the TDC1 and the TDC2 are respectively connected to the temperature mapping module and the voltage mapping module. According to the method and circuit, real full MOS can be realized, extra masks are avoided, effective calibration of the PVT is realized, the monitoring precision is improved, and the method and the circuit are advantageous in that the structure is simple, the area is small, and static power consumption is avoided.

The invention relates to a visual measurement method for temperature distribution of a single-connection combustion field. The visual measurement method comprises the following specific operation steps: 1, acquiring local admittance and temperature data of flame by using an ionic current probe and a thermocouple probe aiming at the typical working condition of a combustor; 2, establishing a mapping model from the admittance rate of the combustion field to the temperature by utilizing the measurement data; 3, designing an electrical tomography sensor according to the structure of the combustor,measuring the mutual impedance of the electrode array distributed around the combustion field, and reconstructing the distribution of the conductivity and the dielectric constant in the combustion field; and 4, substituting the reconstructed distribution data into an admittance-to-temperature mapping model to obtain a temperature distribution image. The method provided by the invention is suitable for measuring the combustion field with a lightproof structure and can quickly obtain the image of temperature distribution and has the advantages of no contact, no radiation, simple structure, lowcost and the like and has important practical value and application prospect.

A process is provided for mapping temperatures in an enclosure. A spectral band for a multi-spectral image-capturing device is selected. An intensity-temperature mapping is generated by performing an intensity-temperature calibration based on an intensity of an image pixel in a field of view (FOV) generated by the multi-spectral image-capturing device, a corresponding temperature measurement, and a selected device setting of the image-capturing device. An emitted radiation is detected based on a first spectral image in the FOV. At least one region is determined whether it is poor responsive, which is underexposed or overexposed, such that an accurate temperature is unable to be estimated based on a temperature value associated with the spectral band. Temperatures of the at least one poor responsive regions are replaced with temperatures from corresponding acceptable regions from at least one other spectral image to provide an extended temperature mapping of the enclosure.

The invention relates to a battery temperature sensing system which is applied to an integrated circuit chip of a handheld electronic device and is used for setting ranges of standard current value and temperature critical value of a battery, obtaining a voltage value output by a current-limiting resistor, computing a current value output by the integrated circuit chip, computing a correction parameter of correction voltage according to the set standard current and the current value output by the integrated circuit chip, computing the correction voltage value of a thermistor of the battery according to the correction parameter and the voltage value output by the current-limiting resistor, reading the battery temperature from a temperature mapping table of a storage unit according to the correction voltage value, judging whether the batter temperature exceeds the set temperature critical value range or not, and warning whether the battery can be charged or not at the temperature. The invention also provides a battery temperature sensing method. The invention can accurately sense the battery temperature of the handheld electronic device.