181results about How to "Low operating environment requirements" patented technology

The invention discloses a pyrotechnical hot-gas sol fire extinguishing agent and a preparation method thereof, and relates to the field of fire extinguishers. The pyrotechnical hot-gas sol fire extinguishing agent is prepared from 41 to 56 weight percent of first oxidant, 8 to 15 weight percent of second oxidant, 15 to 26 weight percent of burnable agent, 4 to 17 weight percent of adhesive and 2 to 22 weight percent of functional additive. The preparation method comprises the following steps of: mixing the oxidants, the burnable agent and the functional additive, then screening the mixture, stirring the mixture and the adhesive, mixing and stirring the mixture and organic solution, pressing the mixture and drying the mixture. The pyrotechnical hot-gas sol fire extinguishing agent has the characteristics of high fire extinguishing efficiency, simplified fire extinguishing composition, no influence of combustion reaction on external oxygen concentration change, no harm substance production to human bodies, animals and natural environments, safer operating mode, simpler and more convenient preparation method and the like, and is suitable for extinguishing fire of fuel and electrical equipment of automobile engine cabins, airplane fuel cabins, power distribution cabinets and the like.

The invention provides quick battery replacing equipment for a semi-automatic electric vehicle. The equipment is arranged between a battery cache rack and the electric vehicle and comprises an equipment moving mechanism 1, a battery lifting mechanism 2, a battery picking and placing mechanism 3, an automatic battery locking mechanism 4, a battery unlocking mechanism 5 and a battery guiding mechanism 6; the equipment moving mechanism 1 is used for integral movement of the replacing equipment on the ground, and the X direction of the replacing equipment is parallel to the moving direction of the replacing equipment; the battery lifting mechanism 2 is used for allowing a battery box to vertically move relative to the ground; the automatic battery locking mechanism 4 and the battery unlocking mechanism 5 are used for locking and unlocking the battery box; and the battery guiding mechanism 6 is a track when the battery box moves along the X direction. The quick battery replacing equipment is low in requirement for operating environment, short in construction period, economic and effective.

The invention relates to an active suspension system for a hydraulic type vehicle and belongs to the technique of vehicle chassis. The suspension system is mainly composed of a closed loop hydraulic system which is formed by serially connecting a hydraulic pump, a throttle valve, a two-position tee solenoid directional valve, a one-way throttle valve, a two-position two-way electromagnetic ball valve, two-position two-way proportional direction valves, a vibration reducing hydraulic cylinder, an overflow valve and an oil tank in turn, wherein the connecting ends of the two-position tee solenoid directional valve and the one-way throttle valve are simultaneously connected with a system oil-supply pressure detecting line; a control unit is respectively connected with an acceleration sensor, a displacement sensor, the two-position tee solenoid directional valve, the two-position two-way electromagnetic ball valve, a two-position two-way proportional direction valve A and a two-position two-way proportional direction valve B through wires. A corresponding active force is generated by the system, so that the active control and the continuous control are realized; the vibration caused by an uneven pavement and increasing / reducing of vehicle weight is relieved; the structure is simple and reasonable; a control device is low in demand on an operation environment; the reliability is high; the manufacturing cost is low; the use cost is low; the hydraulic oil consumption is reduced; the fuel economy is increased.

The one-dimensional displacement work table in nanometer level positioning precision includes a work table part, a position detecting part, and a driving part. The work table part includes coarse regulating work table, which is set between rolling tracks in vertical direction and has coarse displacement regulating mechanism; and fine regulating work table, which has pedestal set in the inner cavity of the coarse regulating work table via one connecting foldable flexible hinge support mechanism and has piezoelectric micro displacement unit as fine displacement regulating mechanism set between its pedestal and the coarse regulating work table. The driving part for the coarse regulating work table and the fine regulating work table is connected to the signal processing and controlling circuit. diffraction grating fixed on the work table is used as the measurement sensor for the displacement of the work table to form the displacement relevant detection signal.

The invention discloses an automatic pallet machine, comprising a left lifting mechanism and a right lifting mechanism. Guiding apparatuses are arranged in the front of the left and right lifting mechanisms, and rear support plates are arranged at the back of the left and the right lifting mechanisms, wherein the rear support plate is used to connect the left lifting mechanism and the right lifting mechanism and restrict the pallet in place. The machine provided in the invention has the following advantages that: the structure of the machine is reasonable, forward operation can be adopted for task of pallet removing, and reverse operation can be used for pallet stacking and pallet settling in a warehouse; the mechanical structure of the machine is simple and portable, the operation is convenient and easy to learn, and the machine occupies a small area; and positioning precision is greatly improved by adopting electrical control. According to the above advantages, the product can greatly minimize manpower of enterprise and reach a final purpose that reduces production cost of the enterprise. The machine provided in the invention is suitable for splitting of various pallets, and the machine can be widely applied in industries of daily chemicals, medicine, foodstuff, beverage, warehouse and the like.

The invention relates to an identity card text positioning method and device, computer equipment and a storage medium. The method comprises the steps of obtaining an initial identity card image; carrying out image vertex determination on the initial identity card image by adopting a first convolutional neural network to obtain vertex coordinates of the identity card; performing outer frame positioning on the initial identity card image according to the vertex coordinates of the identity card to obtain a to-be-positioned identity card image; carrying out text line vertex determination on the to-be-positioned identity card image by adopting a second convolutional neural network to obtain vertex coordinates of a text line; performing textbox positioning on the to-be-positioned identity card image according to the vertex coordinates of the text line to obtain a text line image; and outputting the text line image to the terminal to enable the text line image to be displayed on the terminal.The convolutional neural network model adopted by the method is relatively small in scale, low in requirement on the operation environment, high in positioning accuracy and high in robustness.

The invention discloses a preparation method of a palladium-carbon catalyst for synthesizing meropenem. The preparation method comprises the following steps: (1) putting wood charcoal into a boiling alkali compound water solution, carrying out backflow treatment, washing by virtue of pure water, and drying to obtain an active carbon carrier; (2) preparing an active ingredient solution, and regulating the pH value of the active ingredient solution; (3) pulping the active carbon carrier, and stabilizing the active carbon carrier at a stirring condition, so as to obtain active carbon slurry; (4) adding the active ingredient solution into the active carbon slurry after the pH value of the active ingredient solution is regulated, and stirring to obtain a catalyst precursor; and (5) aging the catalyst precursor, and reducing the catalyst precursor by virtue of a reducing agent, so as to obtain a catalyst finished product. According the preparation method, a low-content alkali compound is utilized for processing the carrier so as to obtain a proper carrier with a reasonable surface chemical structure, so that the consumption of a reagent is reduced; chelated palladium ions of a certain size are prepared by regulating the pH value of the active component solution, so that purposes of controlling the activity and selectivity of the catalyst are realized; the preparation method has no special control point, is simple in process and is beneficial to the industrial large scale production.

The invention relates to the fields of photovoltaic or semiconductors, in particular to a method for inhibiting yellow smog during pickling of silicon materials. The main chemical components of the yellow smog are nitrogen oxides, such as nitric oxide, nitrogen monoxide, nitrogen dioxide and nitrogen tetroxide gas. The invention adopts the technical scheme that silicon material to be pickled is put in a mixed solution of mixed acid and strong oxidizer, wherein the mixed acid comprises hydrofluoric acid and nitric acid, or other inorganic acids or organic acids, and the strong oxidizer is a standard oxidant of which the electrode potential is higher than that of the nitric acid and can be hydrogen peroxide, potassium permanganate, manganese dioxide or ozone. By adopting the technical scheme, the quality for cleaning the silicon material cannot be influenced while the yellow smog is inhibited.

The invention relates to an ejection type ductile fiber strengthened cement base composite material and a preparation method thereof, and belongs to the technical field of construction material. The composite material formula comprises the following raw materials in parts by weight: 19 to 36 parts of cement, 1.9 to 5.7 parts of rubber powder, 11 to 40 parts of fly ash, 12 to 35 parts of river sand, 10 to 30 parts of stone, 7 to 18 parts of water, 1 to 2.2 parts of accelerator, 0.1 to 0.8 part of powder water reducer, 1 to 1.8 parts of redispersible latex powder, and 0.8 to 2 parts of PP fiber. The ejection type ductile PP fiber strengthened cement base composite material is prepared through following steps: primary stirring, secondary stirring, and final set. The invention provides a fiber strengthened cement base composited material, which has the advantages of low cost, simple processing, low requirements on processing technology and operation environment, and stable mechanical properties, and a preparation method thereof.

The invention discloses a keyboard-free input method and a device achieving same. According to the keyboard-free input method and the device achieving the same, detection devices wore on fingers of operators are used for detecting motions of corresponding fingers; the motions are keystroke simulated knocking motions; sequences and or assemblies of actions of different fingers are used for standing for different output orders; the output orders are used for simulating different keystroke output on a keyboard; motions of the fingers generate an output signal on a detection device; the output signal is transmitted to a computing unit; output instructions which are analyzed through the computing unit are transmitted to a receiving device. The device achieving the keyboard-free input method has the advantages of being simple in operational mode due to the fact that keyboard input is simulated through detection of motions of different fingers, achieving information input under any environment and any condition, being low in requirement for operative environment, not needing extra integrated projector, and increasing product-self portability and time endurance due to the fact that finger rings are charged through wireless charging technology.

The invention provides a Trichoderma harzianum solid-state fermentation method, relating to a solid-state fermentation method. The method solves the problems of high cost and small popularization range in the existing Trichoderma fermentation method, and the problem of reutilization of straws. The method comprises the following steps: 1. preparing a spore suspension; 2. preparing a fermentation material, and sterilizing; 3. inoculating the bacterium into the fermentation material, and carrying out fermentation culture; and 4. drying the fermentation product, screening, and collecting the spore powder. The Trichoderma harzianum solid-state fermentation method well utilizes the straws, thereby saving the resources, reducing the air pollution caused by field burning, and effectively implementing resource recycling and reutilization. The most effective Trichoderma spore powder is produced at the minimal cost, thereby providing the raw materials for the subsequent preparation of Trichoderma biological bacterial fertilizers and biological pesticide preparations. The solid-state fermentation method does not need large-scale equipment, does not need to strictly control the production conditions, has the advantages of low requirements for the operating environment and simple and easy-to-learn process, and is suitable for large-scale popularization and convenient for small-scale production.

The invention provides a non-radioactivity ionization source. The non-radioactivity ionization source comprises an ultraviolet source, a photoelectric cathode, a heating temperature controlling device and an ionization source cavity body. The photoelectric cathode comprises a substrate and a surface coating layer which is made of Au or Pd. According to the non-radioactivity ionization source, radioactive substances can be prevented from being used; only photoelectrons with low energy can be produced, detection can be well carried out under an anion mode, and detection can be carried out on explosive substances; the stability is high, and the non-radioactivity ionization source can work under the barometric pressure and high-temperature environments; the light receiving area is large, and the concentration of the photoelectrons is high and even; the structure is small and exquisite, manufacturing is easy, and the non-radioactivity ionization source can be well applied to the ionic migration spectrum industry.

The invention discloses a stunt stream generation method based on an MPEG (Moving Picture Experts Group)-2 transmission stream. The method comprises the following steps of: extracting an I frame of an image set of a video program transmission stream packet; adding a plurality of P frames of which the motion vectors and the forecast errors are zero to form a new code stream; and carrying out MPEG-2 transmission stream packaging according to the new code stream to meet the requirements for the frame rate and the code rate so as to form a stunt stream. By adopting the technical scheme of the invention, the stunt stream conforming to the MPEG standard can be generated, thus special requirement are not required for decoders of terminal equipment such as a set top box, and the like.

The invention discloses a method for duplicate checking of mass data and a system thereof, the method comprises the following steps: extracting data key words from the mass data, wherein, the data key words are used for separating the data from other data areas; dividing the data key words according to the first N+M letters of the data key words, and putting the data key words with the same first N+M letters in a file to obtain key word data files; wherein, the first N letters of the data key words are same, the first N+M letters are not exactly same (N and M are nonnegative integers); and performing duplicate checking on the data in the key word data files to obtain the duplicate checking result. The method helps realize a function of independent duplicate checking of mass data in a low configuration environment.

The invention discloses a general colorimetric nucleic acid detection method based on a CRISPR / Cas system. The method mainly comprises the steps of (1) designing, transcribing and purifying crRNA; (2)labeling nanoparticles by using a universal probe; (3) preparing a Linker probe; (4) carrying out shearing reaction on the CRISPR / Cas system; and (5) carrying out a chromogenic reaction of the nanoparticles and reading a result. The invention further discloses a kit based on the method and application of the kit. The kit can realize naked eye room-temperature homogeneous detection, has the characteristics of strong specificity, high sensitivity, short detection time and the like, is low in cost and relatively strong in universality, and is beneficial to field inspection and popularization ofa primary medical system.

The invention discloses a Word document image generating method and a system, which is applied for converting specified objects in a source file into images. The method comprises the steps of setting specifying marks in the source file for specifying the specified objects; integrally converting the whole page including the specified objects and the specifying marks in the source file into images and forming a temporary image according to the layout of the source file; and acquiring image data of the specified objects with the pixel points of the visualized specifying marks in the temporary image as the boundaries. The image data form the images of the specified objects. The system comprises a specifying mark generating module, an image generating module and a local image extracting module. The method and the system provided in the invention can convert any specified object in the source file into an image. Meanwhile, the resolution of the image can be set as required. The visual effects of the specified object image content are consistent with those of the specified object displayed in the source file.

The invention discloses a permanent magnetic force based waterproof rubber strip. The permanent magnetic force based waterproof rubber strip comprises a rubber strip body and a plurality of neodymium-iron-boron permanent magnetic cores. A magnetic core mounting hole is formed in the bottom end of the rubber strip body and extends along the L direction of the length direction of the rubber strip body to penetrate through the whole rubber strip body, the neodymium-iron-boron permanent magnetic cores are arranged in the magnetic core mounting hole, and a waterproof rubber strip bottom edge is formed between the magnetic core mounting hole and the bottom face of the rubber strip body. The permanent magnetic force based waterproof rubber strip has the advantages that the neodymium-iron-boron permanent magnetic cores and a hull plate produce magnetic force, so that the permanent magnetic force based waterproof rubber strip is attracted on a steel plate surrounding a manhole firmly; working water or rainwater can be prevented from seeping into a ship's space through the manhole or flowing into the ship's space directly, and accordingly substituting magnetic fixing for welding or bolt fixing is achieved.

The invention discloses colorful powdered ink, a preparation method thereof and a method for digital thermal transfer printing. The colorful powdered ink is composed of, by mass, 77-95% of resin, 2-8% of disperse dye, 2-7% of paraffin, 0.1-4% of charge control agent and 0.9-4% of external addition agent. The colorful powdered ink, with disperse printing dye, prepared through a dry-type physical method has the function of thermal transfer printing. After patterns are printed through a laser printing machine, the patterns can be subjected to transfer printing on substrates of textile products, ceramic, metal, glass, plastic and others through transfer printing equipment by the adoption of a thermal transfer technology of 180-230 DEG C and 10-120 s. Compared with a current ink-spraying thermal transfer technology, the method for digital thermal transfer printing has the advantages that printing speed is high, the production technology is mature, the production process is safer and environmentally friendlier, cost is low, the substrates are wide in application range, the firmness of the patterns after transfer printing is good, and the method is suitable for large-scale printing and personalized customization.

The invention discloses an optical wave-based transmission line equivalent salt deposit density sensor which comprises a hollow shell, wherein a monitoring device board is arranged in the hollow shell and comprises a microcontroller; a laser transmitting module, a laser receiving module, a communication module, a data storage module, a power module and a temperature and humidity acquisition module are respectively connected to the microcontroller; the temperature and humidity acquisition module stretches out of the hollow shell. The invention also discloses a method for measuring salt density on line. The wide distribution theory and light energy loss mechanism in dielectric optical waveguide are utilized, the optical power attenuation, environment temperature, relative humidity and other data of the optical sensor are measured, the insulator equivalent salt deposit density with high accuracy is deduced by utilizing an established neural network model, pollution of a field insulator on the transmission line can be accurately monitored in real time or timely on line, the pollution on the transmission line caused by the insulator is globally diagnosed and monitored, and early warning information is provided.

The invention discloses a method for simplifying relative gain matrix (RGA) calculation in a flexible alternating-current / direct-current electricity transmission system. The method comprises the following steps of: linearizing a differential algebra equation set in a flexible alternating-current / direct-current electricity transmission system model, obtaining a transfer function by a simplified matrix operation and performing the RGA calculation on the basis of the transfer function. In the method, although more linearized coefficient matrix elements are formed, the problem of complex matrix element expression caused by multiple times of matrix inversion is solved; and the method can be implemented by programs easily, the operating rate is improved, the technical cost and requirement on operating environment are reduced, and the method is suitable for high-dimension flexible alternating-current / direct-current electricity transmission system.

The invention discloses an external field antenna test system. The external field antenna test system is characterized in that an auxiliary antenna and the related devices are loaded onto an unmannedaerial vehicle, and then the unmanned aerial vehicle is controlled to move along a preset track within a preset range of an antenna to be tested so as to drive the auxiliary antenna to move and send acorresponding test signal to thereby test the performance of the antenna to be tested. The auxiliary antenna is driven by the unmanned aerial vehicle to move, only a certain space around the to-be-tested antenna is needed, and the requirement for the operation environment is lower. Meanwhile, the moving track of the unmanned aerial vehicle can be accurately controlled, so that the accuracy of theperformance parameters of the to-be-tested antenna can be greatly improved. The invention also provides an external field antenna test method which also has the above beneficial effects.

The invention discloses a high-speed hydraulic drill with two engines. The high-speed hydraulic drill comprises a vehicle body and a drill arm assembly, wherein two engines are installed on the vehicle body, the vehicle body is installed on a chassis, and a left crawler unit and a right crawler unit are arranged on the chassis side by side; and a direct-acting arm assembly is arranged at the front part of the vehicle body, is connected with the drill arm assembly, and can drive the drill arm assembly to swing left and right, swing back and forth or move up and down. According to the drill arm assembly, a plurality of drill rods can be effectively connected through coordination of a drill pipe storage mechanism, a drill rod gripping manipulator and a disconnection rod device, thereby prolonging the total length of the drill rod; and a drill arm assembly feeding mechanism adopts a wire rope structure, and the wire rope is strong in impact resistance, convenient to replace and maintain and low in cost. A drill stand adopts an integral structure and is made of aluminum alloy, so that the weight of the high-speed hydraulic drill can be greatly reduced, the energy consumption of the entire vehicle can be effectively reduced, and the center of gravity of the entire vehicle can be prevented from facing forwards.

The invention discloses a tunable pumping-detecting system based on a super-continuum spectrum light source. The tunable pumping-detecting system comprises a femtosecond fiber laser and laser beam splitting device, a super-continuum spectrum light source and wavelength filtering device, a sample and detection receiving device, a time delay device and a lock-in amplification and data acquisition device, wherein the femtosecond fiber laser and laser beam splitting device splits the laser into two beams, one beam of light is used as pump light, the other beam of light enters a high nonlinear optical fiber to generate a nonlinear effect to generate a super-continuum spectrum, the wavelength is tunable from a visible light band to a near infrared band, and the super-continuum spectrum is combined with a wavelength and bandwidth tunable filter to obtain detection light with tunable wavelength; the pump light and the detection light pass through the time delay device and then enter the same position of the sample; the sample generates nonlinear photoelectric response under the irradiation of the pump light, and modulates the detection light passing through the sample; the detection lightis filtered and then is received by the data receiving device.

The invention discloses a cell proliferation bag and a cell proliferation device, and belongs to the technical field of cell proliferation. The proliferation bag comprises a bag body with the sealed edge. The bag body is provided with diversion bodies, the diversion bodies are fit with the bottom surface of the bag body, the side length or the diameter of the bottom surface of each diversion body is 0.5 to 20 cm, and the height of each diversion body is 0.5 to 10 cm. The cell proliferation device comprises a tray and the cell proliferation bag arranged on the tray, and each of two opposite side edges of the bag body of the cell proliferation bag is provided with a fixing rod arranged along the edge of the bag body; the tray is provided with clamping buckles clamped with the fixing rods; a tray load-bearing surface contacted with the cell proliferation bag is provided with projecting diversion bodies, the side length or the diameter of the bottom surface of each diversion bodies is 0.5 to 20 cm, and the height of each diversion body is 0.5 to 10 cm. With the arrangement of the diversion bodies, a culture solution in the cell proliferation bag is allowed to generate upward diversion when moving in a two-dimensional plane, so as to mix uniformly the culture solution under a small shear force.

The invention discloses a miRNA (micro ribonucleic acid) sequence for regulating and controlling organ development of brassica oleracea and a method for culturing a genetically-modified plant with large plant height and few branches by the aid of the sequence. The method comprises steps as follows: (1), extraction of total DNA (deoxyribonucleic acid) of the brassica oleracea; (2), amplification of a miRNA-1 precursor of the brassica oleracea; (3), construction and identification of miRNA-1 plant overexpression vector of the brassica oleracea; (4), genetic transformation; (5), resistance screening and molecular identification of miRNA-1 transgenic arabidopsis; (6), phenotypic analysis of the miRNA-1 overexpression transgenic arabidopsis. A result shows that the plant height of the genetically-modified plant is remarkably larger than that of a wild type plant; plant stem branches of the genetically-modified plant are remarkably fewer than those of the wild type plant. The miRNA sequence and the method for culturing the genetically-modified plant with large plant height and few branches by the aid of the sequence have great value in the aspects of disclosing a regulating and controlling mechanism of miRNA for organ development of the brassica oleracea and adopting genetic engineering methods to interfere with plant organ development process so as to culture crops or economic plants, meeting a breeding objective, with large plant height and few branches.

Disclosed is a submarine pipeline cutting robot. The submarine pipeline cutting robot is mainly used for cutting treatment of submarine damaged pipelines. The submarine pipeline cutting robot is composed of an operation carrier body, a pushing device, a cutting device and a clamping device. The carrier body comprises a carrier frame, a buoyancy block, a propeller, a five-degree-of-freedom manipulator, a lighting lamp, a camera pan-tilt and a hydraulic device. A pushing mechanism is connected to the carrier frame through a hydraulic cylinder and can slide along a rail on the frame. A set of cutting mechanism is arranged above the pushing device and can slide along a rail on the pushing device, so that the cutting purpose is achieved. The manipulator is located in the center of the pushing device. A manipulator base is connected with the pushing device through the hydraulic device. A manipulator clamp hand is connected with the pushing device through pin nails. The state of the manipulator is controlled through combined action of the hydraulic device, so that the purpose of holding the pipelines is achieved. According to the submarine pipeline cutting robot, the submarine pipelines which are located within 1000 meters of the underwater depth and have the size no more than 500 millimeters can be cut.

The invention discloses a method for identifying kinematic parameters of a SCARA robot, and belongs to the technical field of the SCARA robot. The method aims to solve the problem. The method for identifying the kinematic parameters of the SCARA robot comprises the following steps that a corresponding large arm angle and a corresponding small arm angle are obtained when a tail end calibration needle is aligned with each calibration plate; relational expressions of a coordinate origin to various calibration hole coordinate vectors are established; the relationship expressions of the coordinateorigin to various calibration hole coordinate vectors are converted into expressions of a first calibration hole coordinate to other calibration hole coordinate vectors; coordinate conversion is carried out on the expressions of the first calibration hole coordinate to other calibration hole coordinate vectors to obtain vector expressions after coordinate conversion, and the vector expressions after all coordinate conversion are formed into an equation set; and a coefficient matrix is acquired through the equation set, and SVD decomposition is carried out on the coefficient matrix to obtain alarge arm length, a small arm length and a small arm zero position. The method identifies the kinematic parameters of the SCARA robot, and has the advantages of simple and low-operating environment requirements, and low cost.