32results about How to "Wide range of scenes" patented technology

The invention discloses a method and system for performing accurate positioning by adopting hybrid sampling filter by an intelligent vehicle. The accurate positioning of a vehicle in an environment without / with a weak satellite signal can be realized by utilizing the hybrid sampling filter and combining pre-constructed high-precision map data or real-time point cloud data collected by a laser radar or a camera, the method and system can be used for aided driving and unmanned driving of the vehicle; a new probability positioning framework is adopted, and a random sampling consistency algorithmand a particle filter / histogram filter algorithm are efficiently integrated by using a nuclear density estimation method, the disadvantages of the opposite parties are remedied by sufficiently utilizing the respective advantages, and then more robust, accurate and quick positioning is performed by using a probability grid map based on a Gaussian hybrid model.

The invention discloses an electronic paper inspection method. The method comprises the following steps of: S1, scanning answered questions into a picture; S2, carrying out title division on the answered question picture; S3, carrying out same-screen display on same answer areas of a plurality of students so that a teacher can read over the answer areas; and S4, printing the answered paper with reading marks. According to the method, marked reading is realized, answer sheets do not need to be manufactured, and recognition points do not need to be set during the reading, so that the implementation difficulty is greatly reduced and the printing cost is saved; and moreover, same-screen display is carried out on the same answer areas of a plurality of students so that a teacher can read over the answer areas, thereby greatly improving the reading efficiency. Mass data statistics indicates that compared with read-over method in the prior art, the electronic paper inspection method has the effect of shortening the paper inspection time by two thirds.

The invention discloses a thin-film lithium niobate-based integrated chip and a preparation method thereof. A substrate material is silicon-based thin film lithium niobate; the waveguide is a lithiumniobate ridge waveguide; the structure comprises an input / output port, a Mach-Zehnder electro-optic intensity modulator and a coupled double-ring resonator, a Mach-Zehnder modulator comprises two 1*2multimode interference couplers, two modulation arms and a GSG electrode, two coupling regions of the coupled double-ring resonator adopt coupling coefficient tuning units based on a Mach-Zehnder interference structure, and regulation and control electrodes are arranged in the coupling regions and the cavity; a radio frequency signal is loaded to an optical carrier through the modulator and thenis processed by the resonator, and the output signal is output to a detector or other unit chips through the output end, so that the functions of filtering, time delay and the like are realized. The electro-optical modulator and the micro-ring resonator are integrated, the filtering and time-delay functions are achieved, the all-silicon-based thin film lithium niobate material is adopted, and theadvantages of being large in bandwidth and rapid in tuning are achieved.

The embodiment of the invention provides a speech wake-up method and a device, belonging to the technical field of speech recognition. The method comprises the following steps of: acquiring acoustic characteristics of awakening words in speech data; an acoustic characteristic is inputted to the wake-up determination network, and a wake-up determination result is outputted, the wake-up determination result is used for indicating whether the wake-up is successful, the wake-up determination network is trained based on the acoustic characteristics of samples, and the wake-up determination networkis used for determining the confidence level of the wake-up word. The embodiment of the invention obtains acoustic characteristics of awakening words in speech data. An acoustic characteristic is input to the wake-up determination network, and a wake-up determination result is output, and the wake-up determination result is used to indicate whether the wake-up is successful or not. Since the wake-up decision can be made by the wake-up decision network without relying on a fixed preset threshold under any user-defined wake-up word, the wake-up success rate can be improved and the wake-up process can be applied to a wider range of scenarios.

The invention provides a communication signal modulation identification method of a quantum elephant population mechanism evolution BP neural network. A weighted Myriad filter is designed in combination with a data set of designed characteristic parameters, and then the BP neural network is evolved by using the quantum elephant population mechanism to obtain optimal system parameters of the neuralnetwork. And the BP neural network with the optimal weight and threshold is used as a classifier to efficiently identify the communication signal modulation mode under an impact noise background. Thedesigned method can acquire optimal network parameters and classification and recognition effects in an impact noise environment, so that a relatively high recognition rate is obtained in severe environments like impact noise and a low mixed signal-to-noise ratio, and the application limit of existing neural network modulation and recognition is broken through.

The invention discloses a fly ash based geopolymer high-strength grouting material which comprises the following components in parts by weight: 10-20 parts of an alkali activator, 30-45 parts of fly ash, 2-10 parts of silica fume, 1-5 parts of plant ash, 30-45 parts of sand, 1-5 parts of superfine powder, 0.1-5 parts of an expanding agent, 0.1-0.5 part of an antifoaming agent and 3-8 parts of water. According to the geopolymer high-strength grouting material provided by the invention, active materials such as the fly ash, silica fume, and plant ash serving as binders are activated by the alkali activator, mixed with graded sand and matched with a small usage amount of expanding agent, antifoaming agent and the like so as to prepare the high-strength grouting material with early strength, rapid hardening, high fluidity and micro expansion. The invention further discloses a preparation method of the fly ash based geopolymer high-strength grouting material. The preparation method is easyand rapid to implement, energy-saving and environmentally friendly.

The invention discloses a shampoo containing industrial cannabis flower and leaf extract, which is prepared from, in percentage by weight, the following components: 1%-30% industrial cannabis flower and leaf extract, 5%-25% surfactant, 1%-5% co-surfactant, 0.1%-5% thickener, 0.1-5% cosolvent, 0.1%-3% pearling agent, 0.1%-3% conditioner, 0%-2% anti-dandruff agent, 0%-0.5% preservative, 0.1%-1% chelating agent, 0.1%-1% buffer agent, 0.1%-1% flavor, 0%-1% pigment, and water in balance. The shampoo provided by the invention can effectively solve the problems of hair loss, hair oil stain, much dandruff and hair dryness, and the shampoo provided by the invention has the effects of inhibiting bacteria, relieving itching, and calming the nerves, and more importantly, has no stimulation on scalp, which is suitable for a wide range of people and scenes.

The invention provides a test tool for notebook computer flexible circuit board production, and relates to the field of digital equipment processing tools. The testing tool for notebook computer flexible circuit board production comprises a base, the upper end of a base plate is fixedly connected with a vertical plate, a first sliding groove is formed in the side wall of the upper portion of the vertical plate in a penetrating mode, and a second clamping device is arranged at the first sliding groove. A first clamping device is arranged on the front face of the vertical plate and located under the first sliding groove, the first clamping device and the second clamping device are the same in structure and each comprise a bottom plate, a first clamping plate is fixedly connected to the middle of the front face of each bottom plate, and a second clamping plate is arranged on the other side of the front face of each bottom plate. The second clamping plate is slidably connected with the corresponding bottom plate, fixing plates are fixedly connected to the positions, above and below the first sliding groove, of the side wall of the back face of the vertical plate, and a first motor is fixedly connected to the upper end face of the upper fixing plate. The test of the flexible circuit board is facilitated.

The invention discloses a POSS-rheinic acid fluorescent probe for detecting magnesium ions and a preparation method thereof, and belongs to the technical field of chemical detection. The preparation method comprises following steps: dissolving POSS-NH3Cl powder into methanol; making the solution go through an anion resin column to obtain a POSS-NH2 methanol solution; then adding rheinic acid intothe POSS-NH2 methanol solution, carrying out reactions at a room temperature under stirring, until the color of the reaction solution becomes orange from a yellow color; carrying out dialysis by usinga dialysis bag, and after dialysis, using a rotary evaporator to evaporate the solvent to obtain purple powder namely the POSS-rheinic acid fluorescent probe, which has the advantages that the magnesium ion selectivity and sensitivity are high, and the fluorescent probe is environmentally friendly and nontoxic and has a wide application prospect.

The invention discloses an indoor floating type obstacle-avoiding four-wheel drive robot chassis. The four-wheel drive robot chassis comprises a top plate component, a base plate component and a crash-proof component, wherein four driving wheels are arranged in the top plate component in order to improve the flexibility of the four-wheel drive robot chassis and provide more sufficient running power; the floating type crash-proof component is arranged in order to make the four-wheel drive robot chassis be more harmonious and beautiful and be better in work stability; and meanwhile the four-wheel drive robot chassis can autonomously plan the running route and can basically realize automation and intelligentization of the running by carrying a sensing and control component. Thus, the indoor floating type obstacle-avoiding four-wheel drive robot chassis disclosed by the invention is high in obstacle avoidance capability, obstacle crossing capability and bearing capability, good in work stability, harmonious and beautiful in overall appearance and high in intelligence degree.

The invention discloses an image defogging method based on a Bayesian convolutional neural network and a storage medium, and the method comprises the steps of obtaining an RESIDE data set, employing an ITS data set in the RESIDE data set as a training set, and employing an SOTS data set as a test set; and inputting the training set into a Bayesian convolutional neural network, and training the Bayesian convolutional neural network to obtain an optimal model; and inputting the test set into the optimal model, performing end-to-end defogging processing on the test set by adopting the optimal model, and outputting a defogged image. According to the invention, the over-fitting problem can be effectively avoided, and the robustness of the defogging model is enhanced.

The invention discloses a gardening model flowerpot capable of automatically closing for preventing fire. The gardening model flowerpot comprises a flowerpot base, wherein the top of the flowerpot base is fixedly connected with a protection outer pot; a flowerpot is placed above the protection outer pot; the side edge of the flowerpot base is provided with an arc-shaped protection rail rack; the inner side of the arc-shaped protection rail rack is provided with an inner rail slideway; the inner side of the inner rail slideway is provided with a model protection top plate; the bottom of the arc-shaped protection rail rack is provided with a heat conduction base; and a flowerpot placement groove is arranged in the protection outer pot. The gardening model flowerpot relates to the technical field of gardening protection. According to the gardening model flowerpot capable of automatically closing for preventing fire, the problems that when an existing flowerpot is on fire, exposed flowersand plants are directly roasted to die, no corresponding protection equipment is arranged to protect the flowers and plants and certain protective articles are manually protected can be solved, a purpose of automatically working to carry out integral closed protection can be realized, safety protection performance is better, and the gardening model flowerpot can be suitable for a wide scene.

The invention discloses a new DIY technology of a cloisonn enamel painting. Because of many processes, long manufacturing periods and high costs of finished products in the traditional technology, inheritance and development of the cloisonn enamel painting are constrained. The traditional technology comprises the following basic procedures: drawing tracing, silk thread sticking, enamel filling, film spraying and film coating. Based on thorough research and numerous tests on the manufacturing technology of the cloisonn enamel painting, a brand new manufacturing technology is invented, and all used material tools and base plate drawings are packed into one bag, so that everyone can easily experience the manufacturing technology of making the cloisonn enamel painting at home, and the efficiency of the new technology is also 1 to 3 times of that of the traditional technology; and the original drawing tracing step is completely eliminated, manufacturing tools and material selection are alsoupdated and optimized, the several steps including enamel filling, film spraying and film coating can be optimized into one step, and the sets of material tools of material bags are packed together,and thus, everyone can easily make an exquisite craft painting.

The invention discloses a POSS-rhein fluorescent probe for detecting magnesium ions and a preparation method thereof, belonging to the technical field of chemical detection. The preparation method of POSS-rhein fluorescent probe provided by the present invention is: take POSS-NH 3 Cl powder was dissolved in methanol and passed through an anion resin column to obtain POSS‑NH 2 methanol solution; then take rhein and add it to POSS‑NH 2 The methanol solution was stirred at room temperature to react, and the color of the reaction solution changed from yellow to orange; after dialysis with a dialysis bag, the solvent was evaporated using a rotary evaporator to obtain a purple powder, which was the POSS-rhein fluorescent probe. The fluorescent probe has excellent selectivity and sensitivity to magnesium ions, is environmentally friendly and non-toxic, and has broad application prospects.

The invention discloses a concrete surface repairing and protecting process. The process comprises the following steps: S1, comprehensively treating various local defects on the surface of concrete; s2, grooving the expansion joint of the concrete structure; s3, internal corner treatment of the side wall and the bottom plate; s4, through bin polishing and flushing are conducted on the repairing face; s5, testing the bonding force of the base surface through an on-site process test; and S6, optimizing the combination compatibility and preparation of process materials. Compared with the prior art, the method has the advantages that the method is successful in concrete surface protection of spillway holes (channels), flood discharge air-raid shelters, reservoir flood discharge hole repair, hydropower station flood discharge holes and the like, is subjected to long-term test, and is close to advanced technologies of new materials and new processes; innovative practical experience is provided for surface protection and repairing of the release structure, sustainable and vigorous popularization and application can be carried out, the wide market application prospect and scene are achieved, and the high use value is achieved.

The invention relates to a multilayer circuit board manufacturing method and a multilayer circuit board. The method comprises the following steps: punching through holes in a plurality of insulating substrates according to design requirements; filling conductors in the through holes of the insulating substrates; printing conductive ink and insulating ink on the upper surface or / and the lower surface of each insulating substrate according to design requirements to form a printed circuit layer; and after the circuit layers are printed on the insulating substrates, stacking and pressing the multiple layers of insulating substrates into a whole to guarantee that the printed circuit layer located at the upper end of the insulating substrate is electrically connected with the printed circuit layer located at the lower end of the insulating substrate through the electric conductors filled in the through holes of the insulating substrates. Circuit characteristics are achieved through the conductive ink and the insulating ink, an original high-energy-consumption and high-pollution base material is replaced with an environment-friendly material, the conductive performance is achieved through a traditional printing technology, circuit opening and closing are achieved through a traditional punching infiltration mode, and through the traditional printing technology and multi-layer lamination pressurization synthesis forming, the operation process is reduced, and the production efficiency is improved, so the manufacturing cost is reduced, and environmental protection is achieved.

The invention provides an antenna conformal to the handle, comprising: a radiator in the shape of a rod, one end of the radiator is rotatably installed on the outer wall of the door of an unattended terminal equipment box, and the other end of the radiator is bent Folded into the shape of the door handle of the radiator; the feeder cable is arranged inside the terminal equipment box, the inner conductor of the feeder cable is electrically connected to the radiator, and the outer conductor of the feeder cable is electrically connected to the terminal equipment box . The antenna can be multiplexed with the door handle on the door of the unattended equipment terminal box, that is, it serves as a handle structurally and as an antenna on the radio frequency to realize communication between the equipment terminal and the base station. Compared with the existing antenna scheme, the antenna has a low section height, high structural strength, and is installed with fasteners, so the structural reliability is strong; in terms of electrical performance, the antenna can achieve omnidirectional radiation, and introduces horizontal polarization components to improve the robustness of the communication system.

The invention discloses a combined type current-limiting Venturi tube suitable for a CVS and a machining method of the combined type current-limiting Venturi tube. According to the technical scheme, the problems that in the prior art, a special cutter needs to be customized for overall machining of the flow-limiting Venturi tube, the whole flow-limiting Venturi tube is a multi-section splicing piece, the hydraulic characteristic of a channel is obviously affected by welding deformation, and the leakage risk caused by the quality problem of a welding seam is increased are solved. The component has the beneficial effects that the component can be processed in sections, each section can be independently replaced, and the leakage risk increased by the quality of a welding seam is avoided. A combined type flow limiting Venturi tube suitable for a CVS comprises a pipeline body, wherein the pipeline body is arranged in a hollow mode, and splicing sections are sequentially assembled in the pipeline body in the length direction of the pipeline body; the position of the splicing section in the pipeline body is adjustable, so that the lengths of the inlet straight pipe section and the outlet straight pipe section of the Venturi pipe can be adjusted, and the total length of the splicing section is smaller than or equal to the length of the pipeline body. All or a part of flow channels in the Venturi tube are formed in the assembling sections, and at least one section of the assembling sections is detachably connected with the pipeline body.

The invention provides a structured light projection module and a depth camera. The structured light projection module comprises a light source array, a lens, and a diffraction optical element, the light source array includes a first sub-light source array and a second sub-light source array that can be independently controlled, the first / second sub-light source array comprises a plurality of sub-sources arranged in a first / second two-dimensional pattern for emitting a first / second array beam corresponding to the first / second two-dimensional pattern, the lens is used for receiving and converging the first and / or second sub-array light beam(s); the diffraction optical element is used for receiving the first and / or second sub-array light beam(s) which are / is emitted after being converged bythe lens and projecting the first and / or second structured light spot patterned light beam(s) corresponding to the first and / or second sub-array light beam(s), and the sub-structured light spot pattern is formed by spreading and arranging a plurality of sub-spot patterns generated by the plurality of sub-light sources. According to the invention, the non-correlation degree and the density of the structured light pattern are uniformly distributed, the structure light spot pattern with different projection areas and different densities can be generated, and the application is wider.

The invention relates to the technical field of runner plate structures, in particular to a runner plate structure. The runner plate structure is communicated with an external heat management component. According to the runner plate structure, a runner plate body comprises an inlet pipeline and is connected and communicated with an external heat management component through the inlet pipeline; the straight-through one-way valve is mounted in the inlet pipeline; the sealing unit is mounted at an inlet of the inlet pipeline and is in sealed connection with the runner plate body and the heat management component; wherein a circulation hole is formed in the sealing unit, a part of the straight-through one-way valve can be contained in the circulation hole, and the inlet pipeline is communicated with the heat management component through the circulation hole, so that a medium in the heat management component can flow into the inlet pipeline through the circulation hole and the straight-through one-way valve. The one-way valve has the advantages that the straight-through one-way valve and the sealing unit are integrated for use, and the sealing unit can accommodate part of the straight-through one-way valve, so that the structure is more compact, the occupied space in a pipeline is smaller, the weight is reduced, and the cost is reduced.

The invention discloses a horizontal open flow plasma fuel ignition device for a marine drilling platform, and relates to the technical field of marine drilling platform equipment. The horizontal open flow plasma fuel oil ignition device for the marine drilling platform comprises an open flow ignition device body, a monitoring steering mechanism, a protection mechanism and an anti-backfire assembly, wherein a semicircular bearing table is arranged at the bottom of the open flow ignition device body, and the anti-backfire assembly comprises a sweeping mechanism and an suction mechanism. According to the horizontal open flow plasma fuel oil ignition device for the marine drilling platform, fuel oil impurities gathered at the output end of an ignition rod can be swept, in addition, a collecting barrel, a micro air pump, an intercepting plate and a connecting hose are arranged, the clearing efficiency and effect can be improved, the swept impurities can be collected, the output end of the ignition rod is prevented from being blocked, and the possibility of tempering or air explosion caused by impurity blockage is reduced.

The invention provides steel plate rust removal equipment. The steel plate rust removal equipment comprises a grinding and cleaning head, wherein the grinding and cleaning head is a disc, a replaceable steel wire brush is arranged on the disc, and the disc is connected with a driving motor; the grinding and cleaning head is connected with a long handle, a cable is connected to the rear end of thehandle, and a control switch is arranged on the handle; and a blowing nozzle is arranged in the middle of the grinding and cleaning head, fan blades are arranged inside the blowing nozzle, and the fanblades are connected with a motor shaft of the driving motor through a gear. The steel plate dust removal method comprises the steps that during rust removal, firstly, a rust remover is uniformly sprayed on a steel plate needing rust removal; then rust removing and grinding are carried out on the steel plate by using the rust removal equipment with the steel wire brush; and finally, antirust paint is sprayed on the steel plate.

The invention relates to the technical field of speed reducers, and discloses a double-arc curved surface harmonic drive speed reducer. The speed reducer comprises a flexible gear, an input steel gear, an output steel gear and a wave generator; the wave generator is arranged on the inner side of the flexible gear, outer teeth are arranged on the outer side of the flexible gear with a double-arc curved surface tooth profile, the outer teeth of the flexible gear comprise first-stage outer teeth and second-stage outer teeth, the first-stage outer teeth and the second-stage outer teeth are located on the two sides of the outer wall of the flexible gear respectively, the first-stage outer teeth mesh with inner teeth of the steel gear, the second-stage outer teeth mesh with inner teeth of the output steel gear, the wave generator is fixedly connected with an output shaft of a motor, the input steel gear is fixedly connected to a machine base of the double-arc curved surface harmonic drive speed reducer, and the output steel gear is fixedly connected with the output shaft; the first-stage outer teeth and the second-stage outer teeth are different in tooth number and modulus and are distributed on the same reference circle. The speed ratio can range from 300 to 900, the working noise is low, and the bearing capacity is high.

The invention provides a visible light and infrared image registration method for a balanced second-order gradient histogram descriptor, and belongs to the field of multi-source image registration, and the method comprises the steps: carrying out the DoG feature detection of visible light and infrared images, and obtaining the position information and scale information of image spot features; first-order gradient amplitudes and arguments of the visible light image and the infrared image in a multi-scale space are calculated, denoising and contrast-limited adaptive histogram equalization processing are carried out on the first-order gradient amplitude of the infrared image, and then second-order gradients are obtained for the processed first-order gradient amplitude of the infrared image and the first-order gradient amplitude of the visible light image; using an SIFT or GLOH histogram statistical feature description method to solve feature descriptors of second-order gradient generation feature points of the infrared and visible light images, and finally calculating an image geometric transformation model parameter H through the matched feature points. According to the method, the function of sub-pixel alignment of the infrared and visible light images can be automatically achieved, the algorithm is intelligent, implementation is convenient, and the application range is wide.

The invention provides a data deterministic deletion method based on random negation of a data block. According to the method, by carrying out block encryption on cleartext data and carrying out an operation of random position negation on cleartext, a cloud end does not store the complete cleartext. The method is wide in application condition, and allows a key to be leaked in an active or passivecase, and thus, a method of encrypting each cleartext data block by a single key is adopted and key preservation cost is reduced. Compared to other data deterministic deletion schemes, the method is briefer in step and wider in application condition.

The invention discloses a code virtualization protection method, system and apparatus and a readable storage medium. The method comprises: obtaining a to-be-protected intermediate code in a to-be-compiled original function; generating a virtual protection code according to the to-be-protected intermediate code; and in the original code, emptying the to-be-protected intermediate code and inserting the virtual protection code to generate a target code. For the to-be-protected intermediate code, the virtual protection code is generated to replace the to-be-protected intermediate code, the to-be-protected intermediate code in the original function is emptied, and the processing of the intermediate code in the compiling process can be suitable for various different languages; and meanwhile, to-be-protected intermediate codes in all functions in the compiling process can be virtually hidden, so that the method is wider in applicable programming languages and scenes.

The invention provides a battery double-circuit power supply resonant AC heating system, a control method and a battery system. The battery double-path power supply resonant AC heating system comprises a first bridge arm, a second bridge arm and two groups of resonant branches, where the first bridge arm comprises a first power switch tube group consisting of a plurality of power switch tubes, a drain electrode of the first power switch tube group is connected with a positive electrode of a battery, and a source electrode is connected with a negative electrode of the battery; the second bridgearm comprises a second power switch tube group consisting of a plurality of power switch tubes, wherein the drain electrode of the second power switch tube group is connected with the positive electrode of the battery, and the source electrode is connected with the negative electrode of the battery; one ends of two groups of resonant branches are connected with the neutral points of the bridge arms, and the other ends of the two groups of resonant branches are connected with the neutral point of the battery; and the two bridge arms are driven by two sets of complementary PWM signals. The problems that the heating speed is slow, the effect is poor, the efficiency is low and the like in the existing battery heating method in the low-temperature environment are solved, an external charging pile or a battery can be flexibly applied to provide heating energy, and the application range and the scene are wide.

The present invention provides a communication signal modulation recognition method for evolution of BP neural network by quantum elephant group mechanism, and designs a weighted Myriad filter combined with the data set of designed characteristic parameters, and then utilizes quantum elephant group mechanism to evolve BP neural network to obtain neural network The optimal system parameters of , using the BP neural network with optimal weights and thresholds as a classifier to efficiently identify the modulation mode of communication signals under the background of impact noise. The designed method can obtain the optimal network parameters and classification recognition effect in the impact noise environment, so as to obtain a higher recognition rate in the harsh environment such as impact noise and low mixed signal-to-noise ratio, and break through the application of the existing neural network modulation recognition limit.