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 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 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 support combination which comprises a first guide rail and a second guide rail. The first guide rail is of a U-shaped groove structure and comprises a first guide rail wall and a first slot, the first guide rail wall is provided with at least one pair of first installation holes, the second guide rail is a U-shaped groove mechanism and comprises a second guide rail wall and a second slot, and the second guide rail wall is provided with at least one pair of second installation holes. The support combination is characterized in that the width of the first slot is largerthan the width of the second guide rail, one end of the second guide rail is placed in the first slot, and the first guide rail and the second guide rail oppositely penetrate through the first installation holes and the second installation holes through opposite penetrating bolts to be fixedly connected. An installation method is easy, a constructor can conveniently inspect bolt installation and fastening conditions, quality testing and maintenance are facilitated for the support combination, and potential safety hazards are eliminated in time.

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 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 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 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.