127 results about "Multi detector" patented technology

An analytical device for rapid, non-invasive nuclear magnetic resonance (NMR) spectroscopy of multiple samples using a single spectrometer is provided. A modified toroid cavity/coil detector (TCD), and methods for conducting the simultaneous acquisition of NMR data for multiple samples including a protocol for testing NMR multi-detectors are provided. One embodiment includes a plurality of LC resonant circuits including spatially separated toroid coil inductors, each toroid coil inductor enveloping its corresponding sample volume, and tuned to resonate at a predefined frequency using a variable capacitor. The toroid coil is formed into a loop, where both ends of the toroid coil are brought into coincidence. Another embodiment includes multiple micro Helmholtz coils arranged on a circular perimeter concentric with a central conductor of the toroid cavity.

A radionuclide scanner in which multiple detectors are equipped with collimators such that a circular rotation of the detector around a target provides the movement needed for collimator sampling. This collimator sampling is accomplished through strategic placement of the detector heads relative to each other such that for any given projection, a complete imaging of the projection is acquired by summing the complementary contributions of the multiple detector heads at the projection under consideration.

A method of inspecting a DNA chip and an apparatus therefor that allow a picture to be reconstructed in the following steps: A plurality of irradiation spots are formed on a DNA probe array mounted on a stage. Then, the stage is displaced in X, Y directions so as to execute a scanning, thereby irradiating substantially all the entire surface of the DNA probe array. Next, a plurality of emitted fluorescent lights, which are generated from the plurality of irradiation spot portions on the DNA probe array, are converged and are then detected simultaneously by multi detectors. Finally, a data processing apparatus processes the detected signals, thereby reconstructing the picture.

The invention relates to a multi-parameter logging method while drilling based on a controllable neutron source, which includes the steps of utilizing a multi-detector measuring system consisting of the D-T controllable neutron source, two thermal neutrons and two gamma detectors, sufficiently utilizing fast neutrons transmitted by the controllable neutron source to militate with atomic nucleuses of formation elements by means of special pulse and measuring timing sequence design, recording gamma energy spectrums, gamma time spectrums and thermal neutron time spectrums at different positions, and performing simultaneous measurement of multiple parameters such as formation density, formation porosity, formation fluid saturation, formation element content and the like with a nuclear logging instrument in a drilling process by means of different spectral resolution and data processing, so that valuation on formation lithology, formation porosity and formation fluid saturation while drilling are realized, the same parameter of the formation porosity and the formation fluid saturation can be measured by various methods, logging interpretation ambiguity is decreased, and accuracy and reliability of logging data interpretation are enhanced.

The present invention provides a visible-light polarization image fusion method based on non-subsampled shearlets. At first, Strokes calculation is carried out for different polarization images captured by a multi-detector camera at the same time to obtain a polarized degree image, a polarized angle image and a light intensity image by which a polarization feature image of a target is extracted. Then, non-subsampled shearlets transform (NSST) decomposition is performed on the polarization feature image and the light intensity image separately. High and low-frequency fusion coefficients are determined separately in a frequency domain according to window energy and an average value. An initial fusion image is reconstructed by using NSST inverse transform. Finally, the initial fusion image is subjected to target enhancement to obtain final fusion image output. Compared with a conventional target detection method utilizing multi-scale decomposition, the method provided by the present invention increases means for polarization feature extraction and target enhancement, effectively increases details of the fusion image, improves target and background contrast, highlights polarization properties of the target, improves the ability of scene perception and target detection, and is suitable for a target detection system.

An unmanned aerial vehicle mounted light and small-sized self-stabilized flight multispectral imaging system adopts the multi-lens multi-detector light splitting mode and utilizes a management controller to perform synchronous exposure tactics on a detector group to realize simultaneous imaging of the target region in different bands, and image data and flight auxiliary data are packaged and stored by an on-board memory unit; images shot in the target region are transmitted to a ground workstation in real time through a viewer; in addition, a stable control module conducts two-axis system posture adjustment on the azimuth axis and the rolling axis so as to realize vertical or inclined imaging of the system, eliminate plane vibration and perturbance and also avoid influence on the shooting trace from the side flight and rolling of the plane, and the axis of the shooting region is always kept parallel to the trace. The system adopts the light, small and integrated design, is suitable for being built on a light and small-sized unmanned aerial vehicle, can be adaptable to civil fields, such as agriculture and forestry monitoring, water contamination monitoring, smart city planning construction, drug arresting and emergency rescue, and facilitates monitoring of dynamic targets.

A mechanism for reconstructing sub-images based on measurement data acquired by an imaging system including an array of light modulating elements and an array of photodetectors. Each sub-image is reconstructed based on samples from a respective photodetector and a respective set of measurement patterns defined on a respective virtual sub-region on the modulating array. Each virtual sub-region is configured to include at least the light modulating elements that are able to send a non-trivial amount of light to the respective photodetector during a pattern application period. The virtual sub-regions overlap because many light modulating elements are capable of sending light to more than one photodetector. Whenever a measurement pattern of one virtual sub-region overlaps the measurement pattern of a neighboring virtual sub-region, the two measurement patterns agree by design. Thus, the measurement patterns for the collection of virtual sub-regions combine to form a pattern on the whole modulating array.

An automated analyzer for analyzing patient samples. The analyzer includes a plurality of cuvettes, which allow the samples to be mixed with various reagents. The analyzer includes one or more detectors, including a detector adapted to detect luminescence of the reaction mixture in the cuvettes. The analyzer allows for various diagnostic assays to be performed on a single system, and provides for high-sensitivity analysis at faster speeds.

The invention discloses an onboard SAL imaging method adopting along-track interference to inhibit the platform vibration. The method comprises the steps: pre-processing an echo signal, dividing a slow time subaperture and imaging the subaperture; processing an image of the subaperture by means of the interference, extracting an interferometric phase, and estimating the instantaneous speed of a platform in vibration; calculating a phase error caused by the vibration, and performing coarse compensation on the phase error; processing the phase-compensated data by means of PGA (Programmable Gain Amplifier) treatment to obtain a final imaging result. Based on an along-track multi-detector observing structure, the onboard SAL vibration inhibition and imaging method can effectively inhibit influences caused by the platform vibration, and realizes the high-resolution imaging of an onboard SAL azimuth.

The invention provides a single-center projection transformation method of a multi-lens and multi-detector aerial camera. The single-center projection transformation method comprises the following steps: 1) establishing a virtual image space coordinate system with uniform standards; 2) establishing a mathematical model for reflecting a related position relation between multi-lens cameras and a related position relation between a plurality of detectors; 3) solving combined position elements and distortion parameters of a plurality of lenses and the plurality of detectors through static geometric calibration; 4) establishing a mathematical mode for related position changes of images of the plurality of detectors in a dynamic flight process; 5) obtaining identical points of overlapped regions of the images of the plurality of detectors through rapid matching of short-baseline images; 6) establishing a self-calibration error equation according to an identical points coordinate error minimum principle; 7) carrying out a point-by-point method and finishing iterative solution according to a least squares adjustment principle, so as to obtain accurate related position element in the dynamic flight process. The method provided by the invention is universally applicable to generation of equivalent single-center projection virtual images of a multi-lens and multi-detector area array splicing type aerial mapping camera.

A method and system for left ventricle (LV) detection in 2D magnetic resonance imaging (MRI) images is disclosed. In order to detect the LV in a 2D MRI image, a plurality of LV candidates are detected, for example using marginal space learning (MSL) based detection. Candidates for distinctive anatomic landmarks associated with the LV are then detected in the 2D MRI image. In particular, apex candidates and base candidates are detected in the 2D MRI image. One of the LV candidates is selected as a final LV detection result by ranking the LV candidates based on the LV candidates, the apex candidates, and the base candidates using a trained ranking model.

The invention relates to multi-access near infrared light diffusion imaging system of brain functional research, which belongs to medical equipment technological field, comprising of near infrared light laser source, multi-access optical fiber switcher, reflected sensing head with multi-light source and multi-detector, electro optical signal collecting and magnifying circuit system, computer with data collection card and program or controlling signal collection and imaging. The sensing head is reflected sensing head with multi- light source and multi-detector, with a rectangular slice made of soft material as substrate; the light source and detector arrange according to the way of rectangular array, each detector light source is embedded in the central point of rectangular area formed by four light sources or switcher adjacent. Besides, the invention uses the way of contrast imaging, eliminating the effect caused by mismatching between the access, and it doesn't bring hurt, pocketable and stable, also, it can realize real time dynamic imaging which is easier to understand, suitable for clinical application.

A method for analysis of a sample includes irradiating an area of the sample with a polychromatic X-ray beam. X-rays scattered from the sample are detected using a plurality of detectors simultaneously in different, respective positions, whereby the detectors generate respective outputs. Energy-dispersive processing is applied to the outputs of the detectors so as to identify one or more X-ray diffraction lines of the sample.

The present invention relates to a distance measurement precision assessment method in a single-photon laser radar multi-detector condition. The method comprises the steps of: establishing a distancemeasurement precision model of a single-photon laser radar in a multi-detector condition, wherein the distance measurement precision is formed by distance measurement errors and random errors; and obtaining a mathematical relationship of the distance measurement precision and system parameters of a laser radar, measured target parameters and environmental parameters when measurement. According tothe system parameters of the laser radar, the measured target parameters and the environmental parameters when measurement, the distance measurement precision of the single-photon laser radar can be rapidly assessed. The distance measurement precision assessment method has a good backward compatibility, when the number of the detector is equal to 1, the method provided by the invention is the sameas a current single-photon laser radar distance measurement precision assessment method in a single detection condition, and can directly replace the single-photon laser radar distance measurement precision assessment method in the single detection condition.

The invention discloses a true amplitude migration imaging method, in particular, an onshore double/multi-detector total sound wave equation true amplitude pre-stack depth migration method. The method includes the following steps that: a plurality of detection layers are arranged on a ground surface or below the ground surface; seismic signal data are acquired; the partial derivatives of wave fields at the ground surface relative to depth are calculated; wave field continuation is performed a detection point wave field and a shot point wave field; and cross-correlation correlation imaging principles or reflection coefficient imaging principles are utilized to image the continued detection point wave field and shot point wave field. With the method of the invention adopted, a defect that an existing seismic data acquisition system can only record the values of wave fields at the ground surface and cannot accurately solve an acoustic wave equation at the depth domain can be eliminated; an acoustic wave equation can be utilized to accurately solve seismic wave field information; reliable subsurface structure and lithological information can be provided for subsequent geological interpretation personnel; the confidence level of geological interpretation and seismic inversion analysis can be improved; migration imaging can be performed on various kinds of wave fields; and the true amplitude migration of the lithological changes of subsurface structures can be reflected.

The invention belongs to the technical field of chemical substance detection, and can be used for high-sensitivity detection and identification of chemical components of substances. A pulse laser is guided and excited fluorescence is transmitted by employing an optical fiber or an optical fiber bundle so that an operator can hold an optical fiber probe to flexibly detect a substance to be detected; and moreover, a plurality of detectors are employed to detect the fluorescent lifetimes and the spectral information under different wavelengths to perform high-sensitivity detection for the weak autofluorescence spectrum and the fluorescent lifetime, the detection precision is high, and the detection speed is fast. Therefore, the optical fiber conduction multi-detector discrete spectrum and fluorescent lifetime detection method and sensor provide a feasible way to the high-sensitivity and convenient measurement of the fluorescence lifetime and the fluorescence spectrum of the substance to be measured, and have important application in the research fields of biology, medicine, material science and the like and the clinical medicine diagnosis.

Disclosed is a flow cytometer using a spectral device and a multi-detector, in which setting of an optimum wavelength band prior to measuring fluorescence intensity in real time is supported. A signal processing unit stores the intensities in multiple wavelength bands, the intensities being obtained by measuring a calibration sample, and the distribution of the intensities is calculated and displayed by each of the wavelength bands.

A system and method for multi detector detection of electrons, the method includes the steps of directing a primary electron beam, through a column, to interact with an inspected object, directing, by introducing a substantial electrostatic field, electrons reflected or scattered from the inspected objects towards multiple interior detectors, whereas at least some of the directed electrons are reflected or scattered at small angle in relation to the inspected object; and receiving detection signals from at least one interior detector.

The invention provides a multi-source multi-detector combined CT system. The system includes a plurality of sets of radiation imaging devices, a data processing unit, a control unit, a rotating machine rack, and a scanning bed; and wherein, each set of the radiation imaging devices includes a detector and a corresponding X-ray source, and at least two of the plurality of sets of radiation imagingdevices are different types of detectors. Based on the multiple radiation imaging devices of the different detectors, the multi-source multi-detector combined CT system is combined, more accurate imaging can be achieved, the comprehensive performance of CT imaging is improved, and mutual calibration, scatter correction, artifact removal, and system image optimization design can be achieved; and atthe same time, by controlling configuration and a scanning mode of different radiation imaging devices, the CT system can be used for the CT Imaging with different, and through combination of a radiation imaging technology of the different types of detectors, and large volume, multi-energy and multi-source precision ultra-fast CT imaging is achieved.