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468results about How to "Accurate conversion" patented technology

IC full-automatic method for testing brede and full-automatic holding tray type machine for testing brede

The invention discloses an IC automatic detecting braiding method and an automatic pallet type detecting braiding machine, comprising a pallet-transport device, a braiding packing device, a waste materials collecting device. A PC control system and an electrical control system as well as a pallet-separate device are arranged on the front end of the pallet transport device and an empty pallet-collect device is arranged on the back end. The braiding lead direction of the braiding packing device is vertical to the pallet-transport direction of the pallet-transport device. A face side scan device and a back side device for detecting IC as well as a catch-and-put device for catching IC from the pallet are orderly arranged in the transportation range of the pallet-transport device. The catch-and-put device is electrically connected with the PC control system and the electrical control system and is a classification catch-and-put device which can classify the ICs according to the detecting results of the face side scan device and the back side device and then send the eligible ICs to the braiding packing device and the unqualified ICs to the waste materials collecting device. The braiding machine has the advantages of good accuracy and reliability for scanning and detecting, rapid speed for braiding and packing, low composite cost and high production efficiency.
Owner:GRAND TECH SHENZHEN

Resolution method and resolver for signals of rotating transformer

The invention discloses a resolution method and a resolver for signals of a rotating transformer. The method comprises the steps of: acquiring a rotating angle signal of a motor and establishing a sine table, sampling a current low-frequency sinusoidal signal and a current low-frequency cosine signal, dividing the angle position of a rotor into four quadrants, and determining the quadrant which the position of the rotor belongs to; and performing the lookup of the sine table according to the low-frequency sinusoidal signal and the position of the rotor, and judging the rotation direction of the rotor. A sinusoidal excitation signal generator is connected with the rotating transformer and differential signal converters, and a sinusoidal differential signal feedback by the rotating transformer passes through the differential signal converter, then is input into a precision absolute value adder along with a reference signal, passes through a low-pass filter and then is input into a digital signal processor; and a cosinoidal differential signal feedback by the rotating transformer passes through another differential signal converter, then is input into the precision absolute value adder along with the sinusoidal excitation signal which passes through a phase inverter, passes through the low-pass filter and then is input into the digital signal processor. The resolution method and the resolver greatly reduce the cost, and can perform accurate sampling and conversion on input signals.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Input method and input method system for improving sentence generating efficiency

The embodiment of the invention provides an input method and an input method system for improving the sentence generating efficiency. The method comprises a pinyin stream segmentation step and a pinyin-character conversion step, wherein the pinyin segmentation step is used for carrying out pinyin stream segmentation processing on each character which is input into an input pinyin stream according to a time sequence; and the pinyin-character conversion step is used for implementing the pinyin-character conversion and sorting possible Chinese character candidates according to a certain sequence after carrying out duplicate removal. According to the input method and the input method system which are provided by the embodiment of the invention, a plurality of pinyin segmentation paths which are the closest to the willingness of a user are obtained by carrying out segmentation and error correction on the pinyin stream input by the user and a sentence input result and a phrase result which are the closest to the willingness of the user are obtained for being selected by the user by carrying out pinyin-character conversion on a plurality of pinyin segmentation paths, so that the sentence generating efficiency of the input method is improved.
Owner:HARBIN INST OF TECH

Three-dimensional rapid measurement method for raster projection based on defocusing phase-unwrapping of projector

The invention discloses a three-dimensional rapid measurement method for raster projection based on defocusing phase-unwrapping of a projector, and the method comprises the following steps: generating various types of raster patterns through a computer; enabling the raster patterns to be projected on a to-be-measured object in a defocusing manner through the projector; employing a camera to collect raster images; employing a four-step phase shift method to obtain a main value phase; employing an additional raster pattern to obtain a standardized auxiliary raster pattern; employing a gray-scale code method to achieve the phase expansion of the main value phase; calibrating the camera and the projector, and calculating three-dimensional coordinates according to a spatial intersection method. The beneficial effects of the invention are that a measurement speed reaches the maximum refresh rate of the projector, thereby achieving great improvement; the projector does not need to be corrector in a non-linear manner; the additional two-value raster pattern is added, and is used for the accurate conversion of the phase-unwrapping auxiliary raster pattern into standard two-value distribution, thereby obtaining a precise gray-scale code for solving an absolute phase, solving a problem that the absolute phase of a complex surface target is not accurate, and improving the phase quality.
Owner:SOUTHEAST UNIV

Structured query language conversion method based on natural language, and related equipment thereof

The invention relates to the technical field of artificial intelligence, and provides a structured query language conversion method based on a natural language, and related equipment thereof. The structured query language conversion method based on the natural language comprises the following steps: obtaining a natural language text from a preset database; performing word segmentation processing on the natural language text to obtain natural language segmented words; obtaining a target text in a mode of mapping the natural language segmented words through a vocabulary analysis end; performinggrammar analysis on the target text by utilizing a preset grammar analyzer to generate an analyzed text; matching a preset select identifier and a preset where identifier with the identifier information in the analysis text respectively, and determining a select clause, a work clause and a from clause according to an obtained matching result; and generating a structured query language based on theselect clause, the where clause and the from clause. The natural language is rapidly and accurately converted into SQL, the accuracy of query by a user through the SQL is further guaranteed, and theworking efficiency of the user is improved.
Owner:ONE CONNECT SMART TECH CO LTD SHENZHEN
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