623results about How to "Fast sampling" patented technology

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.

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.

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.

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 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.

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 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.