623results about How to "Fast sampling" patented technology

Provided is a method for rapid, 3D, dynamic, projection reconstruction bilateral breast imaging using simultaneous multi-slab volume excitation and radial acquisition of a contrast enhanced bilateral image, in conjunction with SENSE processing, using k-Space Weighted Image Contrast (“KWIC”) filtering and multi-coil arrays for signal separation in an interleaved bilateral MR bilateral breast scan that uses conventional Cartesian sampling without parallel imaging. Software was developed for the reconstruction, modeling contrast kinetics using a heuristic model, display by parametric mapping and viewer / analysis of the multidimensional, high frame-rate bilateral breast images.

The invention discloses a sparse sampling and signal compressive sensing reconstruction method. The method comprises: establishing a signal sampling interval of each time, sampling point number, and the number of points recovering, establishing random sparse sampling lower than a Nyquist sampling theorem value; and designing a measurement matrix by random sampling timing sequence values, designing a transformation matrix of a sparse expression domain of signals, determining a compressive sensing matrix, and separated compressive sensing optimizing signal reconstruction in a nonlinear manner. The method is based on rationality of objective world rules, and makes full use of signal sparsity, uses transformation space to describe the signals, and establishes theoretical framework of new signal description and processing, so under the condition that information is not lost is ensured, signals are sampled by speed much lower than required speed of a Shannon's sampling theorem. Simultaneously, signals can be recovered completely, that is, sampling of signals is converted into sampling of information. The invention provides a whole set of complete method. The method can be used in one-dimensional and multidimensional signals, and can process audio frequency, videos, nuclear magnetic resonance, and other signals.

The invention discloses a multifunctional intelligent clothing care machine. The machine is characterized by comprising a box body, wherein an air exhaust port is formed in the top part of the box body; a water tank and a water draining box which intercommunicate are arranged at the bottom part of the box body; a recognizing module, a washing module, a drying ironing or hanging ironing module provided with an intelligent algorithm system, and a caring module are arranged in the box body and are connected to an information storing and control module. According to the multifunctional intelligent clothing care machine, proper clothing stain removing program, washing program, drying program, ironing or hanging ironing program and casing program are accurately set; the clothing information recognizing and the stain type recognizing are intelligently combined; the care efficiency can be increased based on washing protecting models and intelligently-matched caring program, and meanwhile, the damage to the clothing appearance and physical and chemical performances can be decreased to the maximum. Therefore, common clothing and high-level clothing can be handled, and moreover, some clothing to be subjected to dry cleaning can be handled. The machine is high in automation degree; after a use puts clothing into the machine, the machine can automatically perform all tasks such as washing, drying, ironing and caring.

An oil field process control system including a field versatile control gateway component that interfaces with a plurality of field devices using a broad range of hardwired and wireless protocols, offering in-the-field monitoring and control of each of the field devices and communicates with a remote central control room, exchanging data between the control room and the field using a multiplexed protocol that offers high data speeds and bandwidth, enabling a significant reduction of the amount of wiring, and conduits and other infrastructure expenses that would otherwise be incurred for such a highly reliable communications system.

The invention discloses a remote in-situ integrated test system for planet surface substances and atmosphere. The whole system comprises: a miniature pulse solid state laser, a Cassegrain telescope system, a one-dimensional precise mobile platform, a continuous light indicating positioning laser, various optical elements and echelle spectrographs, ICCD, a high-resolution camera and a photomultiplier. According to the system and method of the invention, the combination of technologies of laser induced breakdown spectroscopy (LIBS), Raman spectroscopy (Raman), and laser radar is realized in the same system; the system of the invention adopts modular design, is high in integration level, small in size, and light in weight, and can realize long-distance surface microimaging, long-distance substance element analysis, long-distance substance composition analysis, and planet boundary layer atmosphere detection.

Systems and methods for adjusting sampling and switching rates of a battery management system are provided. For example, a rate at which different battery cells of a battery cell stack are in communication with an analog to digital converter may be adjusted in response to conditions of a battery cell.

The invention relates to an unmanned aerial vehicle type automatic sampling system at fixed points of the water surface. The unmanned aerial vehicle type automatic sampling system comprises a water sampler, a lifting mechanism and a control circuit, wherein the water sampler comprises a barrel body and a periphery component, a large conical horn mouth is designed at the lower end of the barrel body, and an end cover exhaust device is arranged at the upper end of the barrel body; a buoyancy ring and a heavy ring are arranged at the outer side of the barrel body, the buoyancy ring is arranged at the lower end of an end cover, and the heavy ring is arranged at the lower end of the buoyancy ring; and a valve cover is arranged at the bottom of the inner side of the barrel body; the integrity is connected by a flying ring, the lifting mechanism is connected at the upper part of the flying ring, and is controlled by the control circuit. The lifting mechanism adopts a winding and distributing mechanism, the winding mechanism is composed of a power motor, a worm-gear speed reducer and a speed ratio guide wire wheel set, the speed ratio guide wire wheel set is connected with the flying ring by a connecting wire, the speed ratio guide wire wheel set is connected with the worm-gear speed reducer which is connected with the power motor; while the twisting force is increased, self locking can be achieved; and the system adopts the unmanned aerial vehicle system to realize sampling, the traditional manual sampling mode can be replaced completely, and rapid, intelligent and high-efficiency water sampling can be achieved.

A system, method, and computer program product for generating a digital image is disclosed. The system includes a first image sensor configured to capture a first image that includes a plurality of chrominance values, a second image sensor configured to capture a second image that includes a plurality of luminance values, and an image processing subsystem configured to generate a resulting image by combining the plurality of chrominance values with the plurality of luminance values. The first image sensor and the second image sensor may be distinct image sensors optimized for capturing chrominance images or luminance images.

The invention belongs to the field of applied superconducting power electronics, and in particular relates to a synchronizing current and voltage decoupling control method of a voltage-source-type unit power factor high-temperature superconducting energy storage system converter. The control method is characterized by comprising the following steps: designing a voltage outer ring control module at a direct-current side and a current inner ring control module at an alternating-current side respectively with respect to a mathematical model of a superconducting energy storage system converter under dq synchronizing rotary coordinates; controlling an 'H'-shaped bidirectional DC-DC (direct-current to direct-current) chopper based on an SPWM (sinusoidal pulse width modulation) technology by adopting a hysteresis loop PI current closed-loop control method in a charge mode and a hysteresis loop PI voltage closed-loop control method in a discharge mode; and finally implementing the synchronizing current and voltage double-fed control method of a voltage-source-type SMES (superconducting energy storage system) converter according to the active current requirement and the current value of a superconducting magnet under the power grid unit power factor. The control method provided by the invention has the advantages of multi-stage current decoupling control, rapid response speed, easy implementation of control algorithm and the like, and the method is especially suitable for the application occasions for improving the electricity energy quality of a power grid and inhibiting the low-frequency oscillation of a power system and the like.

The invention belongs to the technical field of electric system operation and control, and particularly relates to an electric system state estimation method of a Phasor Measurement Unit-PMU based on an interpolation matrix. According to the method, during the updating interval period of SCADA measurement, a state, obtained through a PMU interpolation, of an area U is equivalent to prior state information of the area U, the prior state information is continuously updated at each sampling instant of the PMU, the interpolation matrix is updated when SCADA measurement and PMU measurement reach simultaneously at the next moment, and therefore the real-time running state of each node of the area U is worked out. The method has the advantages of being high in accuracy and sampling speed of PMU measurement, and can track the running state of the system accurately in real time.

The invention relates to a high frequency image acquisition system for measuring a flow rate, and belongs to the technical field of water conservancy measurement. The system comprises a high speed camera, a lens, a continuous laser and a combination lens, and is characterized in that: the high speed camera is provided with a 50mm large-caliber lens adaptor; the lens has an F1.0 / 50mm large-caliberaperture; the continuous laser is a low-power continuous laser with the maximum power of 2-5W; and the combination lens can convert light beams emitted by the laser into 1mm-thickness rectangular plane light. The system can acquire images economically and safely at high frequency and high quality so as to continuously measure the flow rate of an open channel or a pipeline.

The invention relates to an anti-interference electricity protecting method and an anti-interference electricity protecting apparatus for a motor or electric equipment under an interference electricity state of a grid. The method comprises a step of judging and identifying an interference electricity fault of the grid, which is the step for a process of judging the timeout of the over-current locking under-voltage, as well as a step of charging the protecting device; and the method can transmit an interference electricity recovering restarting signal depending on a set value of the delayed starting time. The anti-interference electricity protecting apparatus comprises a hardware module which is used for implementing an anti-interference electricity protecting function and an interference electricity state judging logic function module which is used for identifying an interference electricity fault of the grid. According to the technical scheme of the grid interference electricity identifying, the over-current locking under-voltage judgment, the under-voltage timeout locking judgment and the voltage recovery judgment are adopted, to effectively distinguish the grid fault from a motor short circuit accident, a grid interference electricity fault and a grid power-loss accident as well as other faults or accident events differing in property and type, thereby avoiding error action events of the protecting device in case of the motor short circuit accident and the grid power-loss accident, and guaranteeing the equipment and the personnel security.

The invention discloses a capillary needle. The capillary needle comprises a tube body, the two ends of the tube body are respectively provided with an inlet and an outlet for electro-spray, a part of the tube body is bent to form a sampling end, and the sampling end is provided with a sampling port communicating with a cavity in the tube body. The invention also discloses an electro-spray ionization mass spectrometry analytical apparatus applying the capillary needle. The invention also simultaneously discloses a method applying the electro-spray ionization mass spectrometry analytical apparatus for analytical detection. The analytical apparatus is high in integration, compact in structure, easy to control, small in size and low in cost; the sample consumption is greatly reduced, and the experiment cost is decreased; an integrated sample introduction method is employed, and an sample introduction end does not have to be repeatedly placed in a sample and blank solution, such that cross contamination is reduced, and more importantly, the analytical flux is substantially improved; and through combination with an automatic sample changing system, different samples can be automatically introduced, and therefore, the capillary needle, the apparatus and the method are quite suitable for such fields as high-flux screening, unicell analysis, mass spectrum imaging analysis and the like.

The invention discloses a soil leaching liquor collection method under natural conditions, which belongs to the research field of environmental science, soil science and plant nutrition. The soil leaching liquor collection method of the invention mainly includes the following steps: a soil profile in the vertical direction is obtained and the dug-out soil is piled up layer by layer according to depth; a horizontal cave is dug based on the target depth of the soil profile and the upper surface of the cave is guaranteed to be level; a leaching plate is inserted into the cave and slurry modulated out of soil of the soil layer of the target depth is placed into the leaching plate; the dug-out soil is backfilled layer by layer and then compacted layer by layer, moreover, in order to recover the raw condition of the backfilled soil as possible, the backfilled soil is irrigated for a plurality of times. The method of the invention can realize collecting and monitoring the soil leaching liquor under natural conditions, in particular is suitable for monitoring the influence caused by the soil leaching liquor of such soil solute as nitrogen, phosphorus and pesticide, etc., on the groundwater.

The invention relates to a lifting-free borehole bottom rope freezing coring drilling tool and method. The lifting-free borehole bottom rope freezing coring drilling tool comprises a salvaging device, an inner pipe assembly and an outer pipe assembly. According to the coring method, liquid nitrogen is fed into a liquid nitrogen chamber of the salvaging device; the salvaging device is fed into an outer pipe once the roundtrip is ended; the salvaging device is connected with the inner pipe assembly so as to feed the liquid nitrogen into a freezing chamber; and the liquid nitrogen absorbs heat and is gasified so as to freeze the hydrate rock core. By adopting the lifting-free borehole bottom rope freezing coring drilling tool and method, the liquid nitrogen can be prevented from being gasified due to heat dissipation and vibration during drilling, so that the freezing efficiency of the liquid nitrogen can be improved. According to the lifting-free borehole bottom rope freezing coring drilling tool and the coring method, a small drill bit is arranged on the inner pipe assembly and is driven by a large drill bit to drill together, so as to obtain the rock core with required dimension; a drill column does not needed to be integrally lifted from the borehole, so that the lifting-free continuous drilling and coring can be realized; and the small drill bit and a clamp spring seat are disassembled during sampling, a half-closing pipe is drawn out of a rock core pipe together with the rock core, and a rock core sample is stored in a liquid nitrogen storage tank or a high-pressure container.

The invention provides a water sample automatic sampler used for the online water-quality monitoring of seawater factory cultivation, which is characterized in that the water sample automatic sampler comprises a water quality detecting box which is provided with a cover plate; the lower part of the water quality detecting box is provided with a water sample inlet pipe which is connected with a plurality of sampling pipes; the upper part of the water quality detecting box is respectively provided with an overflow pipe and a water sample drainage pipe; the water quality detecting box is internally provided with a plurality of water quality sensors with the upper parts extending out of the box body; the bottom of the water quality detecting box is provided with a drainage pipe; the water sample inlet pipe, the sampling pipe and the drainage pipe are all provided with an electronic valve element. The water sample automatic sampler can realize the detection of multi-point water quality, and has low manufacture cost, good practicability and convenient operation and management.

The invention relates to a passive sampling device for persistent organic pollutants (POPs) in air. The passive sampling device comprises a stainless barrel, wherein top covers are arranged on upper and lower ends of the stainless barrel; sampling fillers are arranged in the stainless barrel; low-density polyethylene films and stainless outer rings are arranged on the top covers; each low-density polyethylene film is fixed on each stainless outer ring; and the thickness of each low-density polyethylene film is 65 to 90mu m. The POPs in the air or waste air can freely pass through the film, particulate matters in the environment can be prevented from being contacted with the fillers, and gaseous POPs in the ambient air can be acquired, so that the subsequent extraction and purification of a sample are simplified; each low-density polyethylene film is fixed to each top cover, so that the passive sampling device has the advantages that the gas flow volume is larger, and the sampling speed is quicker compared with an X-ray diffraction (XRD) resin sampler; due to the sealed device, the influence of natural environment on the device is small; and the device is not required to be arranged in a special device compared with the conventional polyurethane foam (PUF) passive sampling device and the conventional semi-permeable membrane device (SPMD) sampler, so that the device can be simply and conveniently used.

The invention discloses a two frequency signal flying time measuring method and the device that emits two frequency signal superposing signal preset in D / A, emitting time span is tp and starting timing, receiving signal of returning after a time span until the signal intensity is 5-10 times over the background noise stopping timing, taking A / D converting, and calculating the accurate flying time. The device includes power supply, signal emitting module, signal receiving module, calculating module, D / A, A / D, and synchronization controller. The invention has the advantages of wide range, high accuracy, and high dynamic response speed.

The invention discloses a collector of surface sediments, which comprises a cylinder at an upper opening, a hanging bracket set on the top of the cylinder, a guide tube set on the outer wall of the cylinder, some positioning anchors set on the bottom of the cylinder and some balancing weights set on the bottom of the cylinder; a circular scraper is set on a base plate of the cylinder and connected to the middle of the base plate through a revolving shaft in a rotary manner; and some mud scraping holes distributed in a radiation shape are set on the scraper, wherein a scraper blade for rotary mud scraping which is extended downwards is set on a hole wall of the mud scraping hole, a vertical baffle extended upwards is set on the hole wall of the mud scraping hole opposite to the scraper blade, height of the lower scraper blade is bigger than height of the upper surface of the base plate and a mud inlet is set on a corresponding part to the mud scraping hole. The collector of surface sediments is characterized by simper operation, high stability, good reliability, high-quality sampling and efficient sampling.

The invention discloses an optical pulse raster distributed fiber sensing device. The device comprises a low coherence pulse light source, an optical splitter, an optical circulator, an optical coupler, an optical amplifier, an optical interference device and sensing fibers. The low coherence pulse light source in the device is divided by the optical splitter into two beams, wherein one output beam is transmitted to the optical coupler; the optical coupler and the optical amplifier generate a pulse raster; the other output beam is transmitted to the sensing fibers by the optical circulator; and scattered light of the sensing fibers interferes with the pulse raster in the optical interference device and samples interference signals according to a time sequence to acquire distribution information. The device has the advantages of high sensitivity, low coherence requirement, rapid sampling, single circuit, and the like, can be used for the distribution detection of temperature, strain / stress, vibration, and the like of oceans, geologic structures, building structures, and the like, and can be also used for the tomography of oceans, atmosphere, biological tissue or other chemical or physical distribution substances, and the like, thereby having wide application range.

The invention belongs to the field of oil gas and oil well development, discloses a system for sampling and monitoring components of shaft fluid of a gas field and particularly relates to a system for sampling and monitoring components of the shaft fluid of the gas field and a sampling and analysis method thereof, which are designed aiming at environmental characteristics of a H2S / CO2-containing gas field. A sampling process of a sampler of a gas well is safer, an experimental process is more accurate and quicker, and the application pressure range is wider and safer, and an experimental result of researching the change of high-content hydrogen sulfide gas components is more accurate; and a device is safe and reliable. Through the system and the method, the problems that fluid pressure cannot be obtained and fluid deposit in the shaft cannot be predicted because the measurement cannot be performed in the gas field containing high content of H2S / CO2 can be solved and theoretical basis is provided for a gas well capacity design, production parameter optimization and the formulation of technical measures.

The invention discloses a rhizobox culture device applicable for sampling rhizosphere in a forest seedling stage. The device a seedling growing chamber and a rhizosphere sampling chamber, wherein water-draining holes are arranged on the bottoms of both the seedling growing chamber and the rhizosphere sampling chamber; the two chamber are movably connected through a connecting part and then communicated with each other; isolating meshes are covered on the vertical plane, in which the connecting part is positioned, and on the water-draining holes respectively; and in the rhizosphere sampling chamber, an isolating layer for sampling soil at the positions with different distances from the root is arranged near the vertical plane of the connecting part. The device is suitable for the forest seedling stage with relatively thick root system and can sample microzone soil at the positions with different distances from the root conveniently, effectively and precisely.

A full mouth reconstruction method and apparatus includes a denture molding structure mounted onto a patient's maxilla and mandible after being filled with an impression material, so that a static molding of the patient's gum can be performed based on the patient's occlusion. Important reference data including the vertical height of occlusion, facial midline, horizontal occlusion line, connecting line between two pupils and nose-ear horizontal line are recorded for facial and oral reconstructions while the patient is biting a first recording device, and the facial movements of the patient's chewing and speaking are recorded quickly while the patient is biting a second recording device. Records of a metal calibration are applied to obtain data of a patient's front-and-rear, left-and-right, and up-and-down maxillary and mandibular movements through facial movements of a patient's chewing and speaking, and these data are provided to a dental mold technician for producing the denture.

The invention provides a correlated imaging system used for carrying out correlated imaging on an object to be imaged through a thermal light source. The correlated imaging system comprises an object arm light path and a first reference arm light path, wherein the object arm light path is internally provided with a first barrel detector and the object to be imaged; the first barrel detector samples a total light field intensity signal Sm, passing through the object to be imaged, in the object arm light path; the first reference arm light path is provided with a reference detector device for sampling the distribution information of the light field intensity of the first reference arm light path; the reference detector device comprises at least one reference detector unit; each reference detector unit comprises a timing sequence controller and a plurality of reference detectors with the spatial resolving power; the reference detectors are controlled by the timing sequence controller; the reference detectors are exposed in sequence for sampling under the control of the timing sequence controller. As the reference detectors are alternately exposed in time sequence, the exposure frame rates can be overlapped, limitation of existing reference detectors on the sampling speed is broken through, the sampling speed is greatly increased, and the imaging time is shortened.

This invention relates to the management to charged batteries and puts forward a distributed management system and a method including a battery set data sample module and a battery sample management module, in which, the data sample module samples parameters of two or more than two batteries and outputs the values into the management module, which responds the output of the data of at least two battery sets and processes it and the data sample module realizes a first stage protection to the battery set and the management module realizes a second stage protection to the set.

The invention belongs to the fields of underground water sampling and detection, in particular to underground water sampling and detection integrated equipment and a use method thereof. Aiming at theproblem that the existing underground water sampling and detection equipment is inconvenient to sample and detect relatively deep underground water under the earth surface, the following scheme is proposed: the integrated equipment comprises a horizontal mounting table, a support frame is arranged at the bottom of the horizontal mounting table, fixing holes are formed in skirt sections of the support frame, fixing mechanisms are mounted in the fixing holes, a rotating hole is formed in the horizontal mounting table, a rotating cylinder with internal thread at the inner wall is rotationally mounted in the rotating hole, a plurality of threaded rods connected end to end are spirally matched in the rotating cylinder, a driving mechanism for driving the rotating cylinder to rotate is arrangedon the horizontal mounting table, and a guide slot arranged along a length direction is formed on the outside wall of each threaded rod. The integrated equipment is convenient to mount and fix, the continuous splicing of the threaded rod length can be performed according to the underground water depth needing to be collected, so that the relatively deep underground water under the earth surface can be conveniently sampled and detected.

The invention provides a femtosecond laser fiber spectroscopic device based on dispersion pre-compensation, which comprises a femtosecond light source, a dispersion pre-compensator, a fiber coupling device and a fiber spectroscope. The femtosecond light source is used for generating seed laser with the pulse width in the magnitude of femtosecond, the dispersion pre-compensator is used for providing negative dispersion for the femtosecond laser generated by the femtosecond light source so as to compensate positive dispersion introduced into fiber transmission, the fiber coupling device is used for coupling the femtosecond laser which is outputted from the dispersion pre-compensator and carries the negative dispersion, and the fiber spectroscope is used for dividing laser coupled by the fiber coupling device into a plurality of channels of laser pulses to be outputted. The femtosecond laser fiber spectroscopic device has the advantages that the femtosecond pulses with the pulse width close to that of the seed laser can be obtained at a fiber output end, the spectrum and the waveform of the pulses can be kept beneficially after the pulses are transmitted in an optical fiber, the provided negative dispersion can be changed, and accordingly the pulse width of laser outputted after optical fiber transmission is adjusted.