30results about How to "To achieve the purpose of complementary advantages" patented technology

The invention belongs to the meteorological service technical field and relates to a rainfall prediction method, a rainfall prediction system and an electronic device. The method comprises the following steps that: a) radar maps of different heights in different time periods and meteorological information sequences in the corresponding time periods are extracted; b) a deep neural network-based rainfall prediction model is constructed; and c) the extracted radar maps and the meteorological information sequences are inputted the rainfall prediction model, time series analysis is performed on theinputted radar maps and meteorological information sequences through the rainfall prediction model, so that radar map space-time characteristics and meteorological information time-series features corresponding to the time periods are obtained, and rainfall prediction values corresponding to the time periods are outputted according to the radar map space-time characteristics and the meteorological information time-series features. According to the rainfall prediction method, the rainfall prediction system and the electronic device of the invention, long-term and short-term time series dependencies in the trend of the change of the radar maps over time are fully utilized; other meteorological information is incorporated; a variety of data sources are synthesized; and therefore, short-termfuture rainfall can be accurately predicted.

The invention discloses a method for estimating the rotating speed of a brushless direct current motor. In allusion to a problem that a Kalman filter system noise matrix and a measurement noise matrix are difficult to be acquired in estimation of a Kalman filter for the rotating speed of the brushless direct current motor, the invention provides a method in which the system noise matrix and the measurement noise matrix are optimized at first by using an ant colony algorithm and a particle swarm algorithm, and then estimation for the rotating speed is carried out by using an extended Kalman filter. The algorithm integrates advantages of the ant colony algorithm and the particle swarm algorithm, and the particle swarm algorithm is introduced into the ant colony algorithm in allusion to defects that a prematurity phenomenon easily occurs in the ant colony algorithm and that the particle swarm algorithm is poor in local searching ability in a later period, thereby enabling ant colony algorithm to have characteristics of the particle swarm algorithm. The optimized Kalman filter is applied to estimation of the rotating speed of the brushless direct current motor, thereby being capable of improving the precision in estimation for the rotating speed of the brushless direct current motor.

The invention discloses a method and system for achieving system function dynamic extension and replacement through multi-language cloud compilation. According to interception labels, service logic interception codes corresponding to to-be-extended system functions are stored in a script storage library; interception device codes are compiled at corresponding position adding places according to the interception labels during local compiling, and corresponding service logic interception codes are compiled and run through cloud compilation according to the interception device codes. The corresponding service logic interception codes can be added online in real time according to service requirements, and therefore the service logic interception codes can be directly introduced and run after being compiled through cloud compilation during system running, previous codes are not influenced at all, a dynamic script engine system is obtained, system function dynamic interception extension is then achieved, and the flexibility, openness, maintainability and scalability of system function extension are improved.

The invention discloses a mode switch control method of a hot water system of a heat pump. The method comprises the following steps: when the hot water system of the heat pump operates, keeping a heatpump unit in a started state; when the hot water system operates in a circulating heating mode, starting a circulating water pump of a first pipeline and keeping a valve of a water supply pipeline inan opened state, and detecting the current flow of the water supply pipeline in real time; when the current flow of the water supply pipeline is greater than the preset minimum flow, stopping the circulating water pump to switch to a direct heat type heating mode; when the hot water system operates in the direct heat type heating mode, opening the valve of the water supply pipeline and closing the circulating water pump; when a water level switch of a water storage tank is closed, starting the circulating water pump and closing the valve of the water supply pipeline or decreasing the opennessof the valve of the water supply pipeline to switch to the circulating heating mode. The method provided by the invention integrates the circulating and direct heat type heating modes of a hot watermachine of the heat pump effectively and improves the hot water supply ability of the hot water machine of the heat pump, so that the using comfort of a user is improved favorably.

The invention relates to a satellite optical fiber compass system and a combined navigation method thereof. Its technical characteristics are: the system includes two GNSS antennas, a satellite compass unit and an optical fiber compass unit, and the two GNSS antennas, satellite compass units and optical fiber compass units are connected in sequence Together; the integrated navigation method uses satellite direction finding information and fiber optic gyroscope information for error compensation and attitude calculation, and at the same time adds polar region processing design to obtain high-precision, high-reliability ship heading and attitude information. The invention is reasonable in design, it combines the advantages of satellite direction finding and optical fiber gyroscope, learns from each other, has the characteristics of high precision, fast start-up, convenient use, etc., can realize all-weather, full-latitude direction determination and attitude determination, and helps to ensure the navigation of ships Safety.

The invention belongs to the field of image processing and computer vision, and discloses a depth estimation acceleration method of a multiband stereo camera. In a depth estimation process and a binocular stereo matching process of each waveband, through compressing the matching image, on one hand, a parallel equipotential error brought by binocular image correction is counteracted, so that matching is more accurate, and on the other hand, the calculation overhead is reduced. Besides, before cost aggregation, sparse matching is carried out by carrying out transverse compression on the cost graph, so that the calculation overhead is reduced again. And the disparity maps obtained in different modes are fused to obtain all-weather, more complete and more accurate depth information.

The invention belongs to the technical field of thin films and particularly discloses an antibacterial TPU (Thermoplastic Polyurethane) and PVC (Polyvinyl Chloride) blended composite film. The antibacterial TPU and PVC blended composite film is prepared from raw materials of the TPU, the PVC, polylactic acid, hydroxypropyl methacrylate, trifluoropropylmethyldichlorosilane and the like. A preparation method of the antibacterial TPU and PVC blended composite film comprises the following steps: firstly, mixing the TPU with the PVC and mixing; secondly, heating the molten mixture obtained in the first step and plasticizing until complete plasticizing is finished; thirdly, filtering the completely-plasticized mixture, removing impurities and the like. The antibacterial TPU and PVC blended composite film prepared with the preparation method disclosed by the invention has better sterilization and antibacterial effects and longer service life; by using TPU and PVC blended modified composite fabric, the two substance are blended to fully realize respective characteristics. The weather resistance, wear resistance, oil resistance, chemical resistance, low temperature resistance and bonding characteristics with other resin of the PVC can be improved by using the TPU to modify the PVC, and further the impact strength of the PVC is improved.

The invention relates to a braking system integrated with an electro-hydraulic braking source wheel-side coupling device and a control method thereof. The braking system comprises a braking pedal assembly; the braking pedal assembly is connected with a braking part of a motor power-assisted main cylinder; a motor power-assisted assembly is connected with the braking pedal assembly and a braking main cylinder; the braking main cylinder is connected with a hydraulic braking adjusting part through a main cylinder oil pipe; a hydraulic braking adjusting unit of the hydraulic braking adjusting partis connected with the electro-hydraulic wheel-side coupling device through a wheel cylinder oil pipe; a braking motor output end of a motor wheel-side braking part is connected with a thrust mechanism through a speed reducing mechanism; a braking motor is electrically connected with a braking motor controller, and the output end of the thrust mechanism acts on the electro-hydraulic wheel-side coupling device; the electro-hydraulic wheel-side coupling device comprises a three-way connector; the hydraulic braking adjusting unit is connected with the first end of the three-way connector througha wheel cylinder oil pipe; the second end of the three-way connector is connected with a first wheel cylinder assembly through a first oil pipe; the third end of the three-way connector is connected with a second wheel cylinder assembly through a second oil pipe; and the first wheel cylinder assembly is connected with the second wheel cylinder assembly through a brake disc.

The invention discloses an acellular matrix particle compounded with a human mesenchymal stem cell culture supernatant component as well as a preparation method and application of the acellular matrix particle. The invention specifically discloses a preparation method of composite acellular matrix particles, which comprises the following steps: mixing human mesenchymal stem cell culture supernatant and acellular matrix particles in proportion, and freeze-drying to obtain the composite acellular matrix particles. Aiming at the problem that the acellular matrix loses cytokines, the acellular dermal matrix is made into acellular dermal microparticles under the action of mechanical force, the concentrated mesenchymal stem cell supernate is added into the acellular dermal microparticles, and then freeze-drying preservation is performed, so that the concentration of the cytokines in the mesenchymal stem cell supernate is improved, and the content of the cytokines in the mesenchymal stem cell supernate is reduced. According to the acellular dermal matrix, the storage life of the acellular dermal matrix is prolonged, the abundance of cytokines of the acellular dermal matrix can be improved, and the acellular dermal matrix is used as a carrier, so that the functions of an extracellular matrix and culture supernatant cytokines are better exerted.

The invention discloses a high-response high-resolution absolute value encoder with dual encoding systems, which comprises an absolute encoding system and an incremental encoding system, wherein the absolute encoding system is formed by an external double gradient spiral channel group and an internal double gradient spiral channel group of a coded disc, a CCD image sensor and a CCD image sensor mounting base, the incremental encoding system is formed by an equally spaced stripe channel group of the coded disc, a reflective sensor and a reflective sensor base; the coded disc is provided with acenter hole and a positioning hole, the coded disc is positioned and fixed with an output shaft through the center hole and the positioning hole, the output shaft is tightly matched with an inner ringof an output shaft bearing, an outer ring of the output shaft bearing is tightly matched with a fixed support, the CCD image sensor is fixed with the fixed support through the CCD image sensor mounting base, and the reflective sensor is fixed with the fixed support through the reflective sensor mounting base. The absolute value encoder disclosed by the invention solves a problem that the traditional encoder needs a reset operation or is low in response speed in the case of high resolution and the like, and has the advantages of high speed, high resolution, high reliability and the like.

The invention relates to a dual-ion battery adopting a ternary composite material as a negative electrode, and a preparation method thereof. A metal/carbon/graphene ternary composite material is prepared by adopting a one-step high-temperature carbon thermal reduction method; and then the metal/carbon/graphene ternary composite material used as the negative electrode, a graphite type material usedas a positive electrode, and a metal salt electrolyte are assembled into the dual-ion battery. The preparation method is simple and green and environment friendly, the raw materials are simple and easily available, and high cycle performance in a high current and high coulombic efficiency are achieved.