56results about How to "Work around app limitations" patented technology

A disclosed coal-cutter roller automatic height-adjusting system determines the position and the attitude of a coal cutter under a working-face geographic coordinate system through a positioning attitude-determining device and a working-face crossheading end position calibrating device, and a height-adjusting control core processor fuses measure data into a working-face three-dimension geological digital model according to the coal-cutter coordinates, performs three-dimension space analysis in the working-face three-dimension geological digital model according to the position of the coal cutter, obtains the cut coal layer thickness and cut coal layer variation at the position of the coal cutter, and real-timely dynamically adjusts the cutting height of the coal cutter by combining address environment parameters including coal layer dirt band. The provided coal-cutter roller automatic height-adjusting system is capable of realizing automatic height adjusting of a coal-cutter roller.

The invention relates to the technical field related to machine vision, particularly to a human-computer interaction method based on machine vision, comprising the following steps of: an image obtaining step for continuously acquiring image data through an image acquisition device to update data cache; an image denoising step for reading the data from the data cache, filtering the read data and removing random noise introduced into the image; a feature object extraction step for detecting a feature object in the denoised image, and marking the detected feature object with distinct mark; and astep of gesture identification step for analyzing the motion trail of the feature object extracted by the feature object extraction step, and executing corresponding machine instructions according tothe result of analysis on the motion trail. The human-computer interaction method based on the machine vision provides a complete system solution, so that human can interact with the machine in real time, application limit of the prior touch technology is solved, and the human-machine interaction can be more natural.

The present invention is cylinder induction type self sensing method and system for MR damper. One induction coil is wound onto the cylinder of single-cylinder piston type MR damper and excited with the harmonic magnetic field of the exciting coil wound on the piston head of the MR damper to output information of relative displacement state between the piston rod and the cylinder, and this constitute the basic structure of cylinder induction type integrated relative displacement sensor. One active magnetoelectric relative displacement sensor is integrated to the MR damper structure to realize the real-time detection of relative displacement information between the controlled target and the supporting body. The continuous damping force controlling characteristic of magnetic reological fluid damper is combined to make the semi-active damping system of MR damper possess continuously controllable self sensing and damping force.

The invention discloses a preparation method and application of a zeolite molecular sieve crystal surface assembled metal organic framework membrane. The preparation method comprises the steps of: firstly adding a metal cobalt salt, aromatic carboxylic acid, a molecular sieve and an organic solvent into a container and carrying out full mixing reaction, then conducting purification and vacuum drying treatment to obtain a precursor of the zeolite molecular sieve crystal surface assembled metal organic framework membrane material; then putting the precursor into an airtight device and carrying out steam assisted crystallization reaction, finally subjecting the product to purification and drying treatment, thus obtaining the zeolite molecular sieve crystal surface assembled metal organic framework membrane material. The preparation method provided by the invention combines low-temperature assembly and steam assisted crystallization for preparation, is rapid in reaction, greatly shortens the synthesis time, and substantially lowers the energy consumption, also the synthesis method is simple, the yield is high, no harsh condition exists in the synthesis process, and a lot of tedious procedures are eliminated.

The invention relates to a micrometric displacement sensor based on an integrated planar ring-shaped micro cavity and a cantilever beam, which comprises a planar ring-shaped micro cavity, an optical waveguide, a substrate, an incidence fiber connected with the optical waveguide and an emergence fiber connected with the optical waveguide. The planar ring-shaped micro cavity is coupled with the optical phase of the optical waveguide. The micrometric displacement sensor is characterized in that the micrometric displacement sensor also comprises a cantilever beam and a probe; one end of the cantilever beam is connected with the substrate and the other end of the cantilever beam is a free end; the probe is positioned in the middle of the front part of the free end on the lower surface of the cantilever beam, and both the cantilever beam and the probe are formed by etching; and both the planar ring-shaped micro cavity and the optical waveguide are etched on the upper surface of the cantilever beam. The micrometric displacement sensor is made by using a modern MEMS processing technology, can be used in complex magnetic field environments, vacuum environments, can be used for measuring wide range of objects, including the measurement on the surfaces of biological cells as well as the surfaces of metals and non-metals, and has the measuring precision of 10<-4> angstroms.

The invention discloses edible powder tea oil comprising the following components in percentage by weight: 15 to 35 percent of refined tea oil, 40 to 60 percent of maltodextrin, 20 to 40 percent of arabic gum, 0.5 to 2.5 percent of molecular distillation monoglyceride, 0.5 to 2.5 percent of sucrose ester and the balance of water. By adopting a physical pressing method, oil in the tea seeds is extracted; by low-temperature refining, suitable emulsification and homogenization, a convenient and economical spraying drying method is successfully applied to the preparation of the powder tea oil; the process is simple and feasible; the preparation conditions are easily controlled; the edible powder tea oil particles which are obtained by preparation are uniform and similar to spherical shape; the particle size is within 10 to 40 Mum; the refined tea oil content in the powder is 100 to 300mg/g; the micro-encapsulation efficiency reaches over 90 percent; the solubility and the thermal stability are good; the defect of limited application due to the insolubility of the tea oil in water is avoided; and the edible powder tea oil can be widely applied to food, medicine, cosmetics and other industries.

The invention relates to a preparation method of a nylon-6-based polyesteramide fiber. The method comprises the steps of carrying out melt spinning on a nylon-6-based polyesteramide polymer to obtainthe nylon-6-based polyesteramide fiber. A preparation method of the nylon-6-based polyesteramide polymer comprises the steps of mixing nylon-6 prepolymer ester with a polyester prepolymer and then carrying out an ester exchange reaction to obtain the nylon-6-based polyesteramide polymer. The nylon-6 prepolymer ester is prepared by firstly synthesizing a dibasic-acid-terminated nylon-6 prepolymer and then adding dihydric alcohol to enable dihydric alcohol to react with carboxyl of terminal groups. According to the preparation method of the nylon-6-based polyesteramide fiber, the nylon-6-based polyesteramide polymer is obtained through a copolymerization approach, so that the uniformity of nylon-6 and polyester blocks is improved, and the phase domain is controllable; polyesteramide slices containing polyester chain segments at different ratios can be obtained by changing the addition quantity of the polyester prepolymer, so that the sequence structure is controllable, and the polymerization process is flexible. The prepared fiber has high spinnability and stiffness and can be applied to the fields of clothing, home textiles, automobile interior decoration and the like.

The invention relates to an optical cavity micro-accelerometer based on an integrated input/output terminal, which comprises an optical cavity, a cantilever beam, a substrate, a mass block, an input grating, an output grating, an input optical waveguide and an output optical waveguide. One end of the cantilever beam is connected with the substrate and the other end is connected with the mass block; the cantilever beam is formed by etching; the optical cavity is etched on the upper surface of the cantilever beam and is in the shape of a plane runway. The optical cavity micro-accelerometer is characterized in that the optical cavity comprises a three-layer structure from top to bottom; the optical cavity is integrated with the input/output terminal; and optical input and output ports are integrated with the optical cavity through a grating structure; and the input optical waveguide and the output optical waveguide are integrated with the optical resonant cavity. The optical cavity micro-accelerometer based on an integrated input/output terminal is made by modern MEMS (Micro-electromechanical System) process technology and is applicable to measurement of acceleration of vibration, impact and the like in a magnetic filed environment and a vacuum environment.

The invention relates to the technical field of audio processing devices, and particularly relates to a wireless microphone based on Bluetooth BLE transmission. A data processing and control module encodes and compresses an audio signal, and a Bluetooth BLE module transmits the audio signal encoded and compressed by the data processing and control module to electronic mobile equipment through a Bluetooth BLE mode, instead of traditional Bluetooth audio transmission modes such as BR/EDR. The wireless microphone can be applied to, for example, mobile phones, Bluetooth speakers, loudspeakers andthe like, can further achieve the transmission and playback of audios, and can meet a wide range of application requirements, such as karaoke entertainment, square dancing and the like; moreover, theBluetooth BLE has low power consumption, low cost and higher applicability, and cannot be restricted by the traditional Bluetooth applications such as BR/EDR; and an original audio signal is subjectedto digital AD sampling, the data processing and control module uses processor compression, digital error correction and compensation algorithms, and also combines with a traffic control algorithm forpackaging, thereby, the sound quality can be guaranteed, good scalability and compatibility can be achieved, and strong practical values and market promotion values can be realized.

A fruit wine containing nano-SOD for preventing the damage of alcohol to liver and brain, regulating and improving physiological functions, and preventing diseases is prepared by proportionally adding nano-COD to fruit wine.

The invention relates to a PTC (Positive Temperature Coefficient) exothermic material and a preparation method thereof as well as a PTC exothermic sheet. The PTC exothermic material is characterized by comprising the raw material components of N,N-dimethylformamide, polyvinylidene fluoride and carbon powder. The N,N-dimethylformamide is a solvent. 8.0-11.2 g of the polyvinylidene fluoride and 1.1-3.2 g of the carbon powder are mixed and dissolved in per 100 ml of an N,N-dimethylformamide solution; or 8.0-11.2 g of the polyvinylidene fluoride and 15-25 g of aluminum powder are mixed and dissolved in per 100 ml of the N,N-dimethylformamide solution. The PTC exothermic sheet comprises a substrate shaped by the PTC exothermic material and a lead wire pressed on the substrate. By changing the PTC raw material, the ultra-thin PTC exothermic sheet can be manufactured and the thickness can reach about 0.2 mm. The application range is enlarged and the PTC exothermic sheet can be applicable to clothes, exothermic products and the like in need of the ultra-thin PTC exothermic sheet.

The invention relates to an Au/SnS2 nitrogen dioxide gas sensor comprising a gas sensitive material and a heating substrate. The gas sensitive material is coated on the surface of the heating substrate in a spinning manner and includes nanocomposite material formed by gold simple-substancenano particles and SnS2 nanosheets. In addition, the preparation process comprises the following steps: step one, mixing an acidic buffer solution with absolute ethyl alcohol, adding SnCl2.2H2O into the mixed solution, and carrying out stirring for dissolution; adding Na2S2O3.5H2O and sulfur powder, carryingout stirring, pouring the mixture into a reaction kettle for reaction to obtain a yellow sediment; cleaning and drying the sediment to obtain SnS2; step two, dispersing the SnS2, adding chloroauric acid and L-lysine, carrying out stirring fully, and then adding sodium citrate to carry out gold simple substance reduction; and carrying out cleaning and drying on the obtained product to obtain Au/SnS2; and step three, adding Au/SnS2 into deionized water, carrying out fully grinding and then coating the surface of a heating substrate with the ground substance in a spinning manner, and carrying outdrying to obtain a Au/SnS2 nitrogen dioxide gas sensor. The preparation process is simple; the obtained Au/SnS2 has the great application value in the preparation of the gas-sensitive sensor; and thesensor makes a sensitive and rapid response to nitrogen dioxide.

The invention discloses an escalator pedestrian pose target detection method and system based on a Faster R-CNN. The escalator pedestrian pose target detection method comprises the following steps that: S1, a VGG16 convolutional neural network extracts a feature map of escalator pedestrian poses; S2, the feature map is input into an RPN layer network; S3, the RPN layer network judges the categoryand the position of a detection object in the feature map; S4, the RPN layer network sends the results to an escalator system; and S5, the escalator system obtains the pedestrian pose information according to the received category and position result information, emergency braking is conducted on the escalator system when dangerous poses exist in the related positions, and the escalator system operates normally when the dangerous poses do not exist in the related positions. According to the escalator pedestrian pose target detection method and the system, the escalator monitoring video streamdata is collected, and the processed pedestrian pose information is sent to the escalator system after the escalator monitoring video stream data is processed by using the FastRCNN network, so that the escalator system is emergently braked to achieve the purpose of preventing escalator accidents in real time when dangerous poses exist in related positions, and the overall safety is improved.

The invention discloses a wrapping layer, a medium trace element-containing externally-wrapped stable fertilizer with the wrapping layer and a preparation method of the medium trace element-containingexternally-wrapped stable fertilizer. The wrapping layer comprises an inhibitor, and the inhibitor is formed in the wrapping layer by spraying an acid liquor containing the inhibitor. The inhibitor in the wrapping layer is formed in the wrapping layer by spraying acid liquor containing the inhibitor; the inhibitor is added in the form of being dissolved in the acid liquor; compared with solid state, the advantages are that, uniform dispersion of the inhibitor can be ensured in the mixing process; therefore, the inhibitor is uniformly dispersed in the wrapping layer; the wrapping layer can befirmly attached to the surfaces of fertilizer particles; falling off is not easily caused, the actual content of the inhibitor in the obtained fertilizer is more consistent with the theoretical content, and it is ensured that the fertilizer is high in nutrient utilization rate; in addition, due to the addition of the acid liquor, the fertilizer has certain acidity, and when the fertilizer is usedfor alkaline soil, the effects of adjusting the pH value of the soil and improving the soil can be achieved, fertilizer using amount can be reduced, the efficiency can be improved, the crop yield canbe increased, and the crop quality can be improved.

The invention discloses a wear-resistant aluminum alloy. The wear-resistant aluminum alloy comprises an aluminum alloy base material and a self-lubricating composite material attached to the surface of the aluminum alloy base material, wherein the self-lubricating composite material is prepared from the following components in parts by weight: 50-60 parts of aluminum powder, 3-5 parts of silicon powder, 20-25 parts of tungsten disulfide powder and 15-20 parts of polyether-ether-ketone. The invention further discloses a preparation method for the wear-resistant aluminum alloy. According to thewear-resistant aluminum alloy and the preparation method thereof, by means of interface metallurgical bonding, a Si-Al continuous phase framework structure is obtained on the surface of the aluminum alloy, so that the adhesive force of a coating and the base material is improved, meanwhile, tungsten disulfide and the polyether-ether-ketone are inlaid in the framework material to form a self-lubricating wear-resistant layer, so that the friction coefficient of the surface of the aluminum alloy is greatly decreased, and the wear resistance of the aluminum alloy is improved.

The invention belongs to the modified field of starch, relating to a starch suspension stabilizer and a preparation method thereof. Defects that the native starch cannot be dissolved in cold water and the like limit the application thereof in the industry; and the modification of the starch mainly adopts a chemical means at present, and the method can improve the dissolubility of the starch, but has complex operation and high modification cost. The invention provides a method which adopts the physical dispersing principle to improve the dispersing level of the starch in the cold water and thestarch suspension stabilizer which is prepared by adopting cellulose derivative as main raw materials through proper weight matching. In the invention, the obtained stabilizer can greatly improve thedispersing level of the starch in the cold water, is stable and reliable, and can lead the starch in the cold water to disperse for more than half an hour, thus greatly expanding the application scope of the starch.