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317results about How to "Quick function" patented technology

Underground pipeline positioning method based on CORS (continuous operational reference system)

The invention discloses an underground pipeline positioning method based on a CORS (continuous operational reference system). The method comprises the following steps of: I, establishing a CORS; II, collecting paper drawings: collecting the pipeline as-built drawings of all underground pipelines paved in an area to be positioned and the topographical map around each underground pipeline respectively; III, making an electronic map, wherein the making process comprises the steps of paper map electronization treatment, drawing scanning and pretreatment, raster image transfer, raster image orientation, image sector conversion, pipeline attribution information marking, edge matching treatment, projection conversion, data check, conversion into an embedded electronic map and the like; IV, transferring and visually displaying the electronic map; V, superposing the coordinate data of the electronic map; and VI, positioning the underground pipelines. The method disclosed by the invention is easy and convenient to use and operate, has a good using effect and high practical value, and can really realize accurate positioning of the underground pipelines and effectively solve the problems of inconvenience in positioning operation, relatively bad positioning effect and the like of the existing underground pipeline positioning method.
Owner:XIAN MEIHANG INFORMATION IND

Method and system for MSK iterative demodulation by combining LDPC code

The invention discloses a method for MSK iterative demodulation by combining an LDPC code, which comprises the following steps of: performing orthogonal down-conversion, low-pass filtering, carrier frequency offset rough estimation and compensation on received signals in turn, then storing processing results in a first-stage buffer, and simultaneously performing differential demodulation on data after compensation; performing frame synchronization head-related detection on the data after the differential demodulation, and after a frame synchronization head is detected in the related detection, using a control switch to perform carrier phase offset rough estimation and compensation and simultaneously perform an SNR estimation on the data in the first-stage buffer; storing the data after the carrier phase offset compensation into a second-stage buffer; and reading the data in the second-stage buffer to perform LDPC code assisted iterative carrier and timing synchronization and compensation, performing MSK coherent demodulation and LDPC encoding on the data after the LDPC code assisted iterative carrier and timing synchronization and compensation in turn, and outputting an encoding result decision. The technical scheme provided by the invention realizes quick demodulation and encoding functions under ultra-low SNR by using the system and the method for the MSK iterative demodulation by combining the LDPC code.
Owner:TSINGHUA UNIV +1

Full-automatic automobile washing device

A full-automatic automobile washing device comprises a spraying device. The spraying device comprises a top spraying rod and vertical spraying rods. The left vertical spraying rod and the right vertical spraying rod are each provided with a plurality of shower nozzles in the vertical direction, and the nozzles of the left vertical spraying rod are opposite to the nozzles of the right vertical spraying rod. Shower nozzles with nozzles facing downwards are distributed on the top spraying rod. The spraying rods are each provided with a switching mechanism, and the shower nozzles can be connected with a high-pressure water source and a high-pressure air source. The switching mechanisms can be in linkage with an output shaft of a switching motor. The top spraying rod, the left vertical spraying rod and the right vertical spraying rod are connected with a beam which is arranged on a guide rail in the manner of sliding forwards and backwards through a driving motor, the top spraying rod can be arranged on the beam in an ascending and descending mode through a lifting motor, the left vertical spraying rod and the right vertical spraying rod can be connected with the beam in the manner of moving left and right through respective motors, and the beam is provided with a detecting device which can detect the size of an automobile body. The full-automatic automobile washing device is ingenious and reasonable in structure, high in automation degree and more complete in function, effectively solves the problems of an existing automobile washing machine, and is a very practical automobile washing device.
Owner:绍兴市中令汽车服务有限公司

Household kitchen utensil fruit and vegetable pesticide residual removal cleaning machine and intelligent cleaning method

The invention relates to a household kitchen utensil fruit and vegetable pesticide residual removal cleaning machine and an intelligent cleaning method. The household kitchen utensil fruit and vegetable pesticide residual removal automatic cleaning machine comprises a main water tank provided with a water inlet pipe and a water drainage pipe; ultrasonic generators are arranged on the outer surface of the bottom of the main water tank or the outer surface of the periphery of the main water tank in a closely-attached mode; an electric heating direct-heating tube and anion balls are arranged in the water inlet pipe; the main water tank is further provided with a water inlet connected with the water inlet pipe and a spray disc connected with a spray pipe; the spray disc is arranged at an opening formed above the main water tank so that the spray disc can spray water into the main water tank from top to bottom; the shape and area of a water outlet surface of the spray disc are matched with those of the opening formed above the main water tank; multiple tiny spray water outlets are evenly formed in the water outlet surface of the spray disc; the machine further comprises an ozone generating device, a control circuit and a control panel. The household kitchen utensil fruit and vegetable pesticide residual removal automatic cleaning machine and the intelligent cleaning method have the functions of dish washing, vegetable washing, disinfection and drying, and the machine is easy, rapid, safe and reliable to operate.
Owner:马东明
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