33results about How to "Simple requirements" patented technology

The invention discloses a novel bearing inner and outer ring pressing die, which relates to the technical field of bearing press fitting, and comprises a bearing body, an outer ring pressing die body for carrying out outer ring press fitting on the bearing body, and an inner ring pressing die body for carrying out inner ring press fitting on the bearing body, the anti-inclination assembly is arranged on the outer ring pressing die body and used for preventing inclination of the bearing body in the press-fitting process, the adjusting assembly is arranged on the inner ring pressing die body and used for adjusting the press-fitting state of the bearing body, and the anti-inclination assembly comprises a fixing ring fixedly connected to the inner wall of the outer ring pressing die body; the two through holes are slidably connected with anti-roll rods, and the ends, close to the bearing body, of the two anti-roll rods are rotationally connected with anti-roll balls. According to the novel bearing inner and outer ring pressing die, the outer ring pressing die body is used for providing straightening, limiting and guiding functions, the inner ring pressing die body is used for providing the limiting and guiding functions, and meanwhile, the bearing body can be effectively straightened under the matching action of the anti-inclination assembly.

The invention belongs to the technical field of biology, and particularly relates to a real-time fluorescent quantitative PCR (polymerase chain reaction) detection kit for porcine reproductive and respiratory syndrome virus and application of the real-time fluorescent quantitative PCR detection kit. The invention designs a primer probe combination for detecting porcine reproductive and respiratory syndrome virus, the primer probe combination consists of a primer P1, a primer P2 and a probe, and the sequences of the primer P1, the primer P2 and the probe are respectively shown as a sequence 1, a sequence 2 and a sequence 3. The invention further provides a kit containing the primer probe combination. The kit can be used for identifying and detecting the porcine reproductive and respiratory syndrome virus. The primer P1 and the primer P2 designed by the invention have strong specificity and high sensitivity, the detection sensitivity of the primer P1 and the primer P2 to the porcine reproductive and respiratory syndrome virus reaches 1.0 * 10 < 1 > copies / mu L, the detection repeatability is good, and the primer P1 and the primer P2 can be used for rapidly detecting the porcine reproductive and respiratory syndrome virus.

The invention belongs to the technical field of battery negative electrode materials, and discloses preparation and application of a two-dimensional carbon matrix sheet embedded monodisperse bismuth nanoparticle composite material. The preparation method comprises the following steps: treating a bismuth precursor by a liquid reduction method to obtain porous elemental bismuth; then dispersing porous elemental bismuth into a system containing a carbon matrix precursor to form a uniform and stable dispersion liquid, and freeze-drying to obtain mixed aerogel; and calcining the mixed aerogel in a protective atmosphere to obtain the two-dimensional carbon matrix sheet embedded monodisperse bismuth nanosphere composite material. The method is simple in process, low in raw material cost, high in controllability of operation steps and capable of realizing large-scale production. The obtained product is novel in structure, the bismuth nanospheres embedded by the two-dimensional carbon substrate sheet are small in particle and uniformly dispersed, and the reaction activity is high; when being used as a negative electrode material of a lithium ion battery and / or a sodium ion battery and / or a potassium ion battery, the composite material has the characteristics of high specific capacity, long cycle life and excellent rate capability.

The invention relates to a bimetal composite bar with a surface nano layer and a built-in framework and a preparation method of the bimetal composite bar. Comprising the following steps: (1) preparing stainless steel powder and aluminum alloy; (2) constructing a stainless steel rod-shaped model with a built-in porous framework; (3) a selective laser melting SLM forming model is adopted, and a stainless steel bar with a built-in porous framework is obtained; (4) melting the aluminum alloy; (5) the stainless steel bar is heated, then the aluminum alloy solution is poured into pores of the framework, and an initial composite bar is obtained; (6) cutting off the part with the pouring cup at the top end of the composite bar by using linear cutting; (7) the composite bar obtained in the step (6) is subjected to rotary swaging after being heated and subjected to heat preservation, and a lengthened composite bar is obtained; and (8) the stretched composite bar is subjected to surface mechanical grinding, and finally the metal composite bar with a surface nanometer layer and a built-in stainless steel framework is obtained. According to the method, 3D printing, casting, rotary forging and surface mechanical grinding technologies are combined together, and finally the metal composite bar with matched strength and plasticity is prepared.

The present invention relates to an expansion adhesive sheet comprising: a base material; two thermal expansion adhesive layers respectively disposed on both sides of the substrate; the expansion bonding sheet is characterized in that the expansion bonding sheet further comprises a release paper layer which is arranged on the surface of one thermal expansion bonding agent layer; and the release paper is double-sided release paper. The invention has the following beneficial effects: during winding, only one layer of release paper (the upper layer or the lower layer) is peeled off, so that the molding equipment is simplified, the winding can be carried out at a higher temperature without using measures for reducing the product performance, and the adhesion is avoided during winding; compared with a five-layer structure attached with non-woven fabric or sprayed with a release agent, the operation convenience is improved, and the requirements of instruments and equipment are simplified; according to the scheme, the degree of freedom of adhesive formula design can be improved at the same time, and the softening point of the expansion bonding layer can be reduced on the premise of ensuring that the expansion bonding layer is non-viscous at room temperature.

The invention discloses a low-cost super-corrosion-resistant high-strength wrought magnesium alloy and a preparation method thereof, and relates to a magnesium alloy and a preparation method thereof. The problems that the non-rare earth magnesium alloy is poor in corrosion performance and low in strength are solved. The magnesium alloy disclosed by the invention is an Mg-Al-Zn-Mn-Ca alloy; the preparation method comprises the following steps: weighing a magnesium ingot and an intermediate alloy according to alloy element components, and carrying out simple alloy smelting, solid solution, aging treatment and extrusion thermal deformation to obtain the super-corrosion-resistant high-strength wrought magnesium alloy with excellent comprehensive performance. According to the magnesium alloy, the problem that the corrosion resistance and the strength of the magnesium alloy are not matched is solved, the corrosion resistance effect is remarkably improved, the good corrosion resistance is achieved, the alloy has the uniform organization structure, the comprehensive mechanical property is good, and the cost is low; the preparation method provided by the invention is simple in equipment requirement, short in technological process, convenient to operate, high in preparation efficiency, relatively low in cost and suitable for large-scale production.

The invention relates to a communication protocol suitable for distributed system equipment control. The communication protocol is based on an open system interconnection model constructed by an application layer, a presentation layer, a session layer, a transmission layer, a network layer, a data link layer and a physical layer. The communication protocol specifically comprises the following modules: a transport layer interface standard module; a session layer message and communication control module; and an application layer service module. The protocol provided by the invention is a distributed control system, particularly a multi-device system with a tree structure, and provides a device control and data transmission standard which is easy to manage, flexible, efficient and better in robustness, and the protocol does not depend on a physical layer, is easy to transplant and strong in expansibility, and has user friendliness.

The invention relates to a silicon-based negative electrode material based on metal oxide coating and preparation and application thereof, and a preparation method of the material comprises the following steps: S1, putting a silicon-based material into a solvent for ultrasonic dispersion to obtain a uniform suspension; s2, adding a metal oxide precursor into the suspension obtained in S1, and carrying out hydrolysis or condensation reaction to generate a continuous metal oxide coating layer on the surface of the silicon-based material in situ; and S3, after the reaction is finished, centrifugally separating, washing and drying the obtained product to obtain the silicon-based negative electrode material, namely a target product. Compared with the prior art, the method provided by the invention is simple in process, low in cost and good in repeatability, and the obtained coated silicon material has excellent structural stability and electrochemical performance and has a wide application prospect in high-energy-density lithium ion batteries and all-solid-state batteries.

The invention discloses a semi-conductive high polymer material analysis method and device, and relates to the technical field of high polymer material analys.The method specifically comprises the steps that a charging roller and an OPC simulation roller in functional components of an imaging system are coaxially clamped, and a rotating mechanism is arranged for driving; carrying out resistance detection on the charging roller, and carrying out halation detection on the charging roller and the OPC simulation roller; reading a resistance value, observing and recording halation rays, and judging the type and dispersion performance of the conducting medium by a halation color judgment method; according to the analysis method provided by the invention, materials of various parts made of high-molecular polymers can be rapidly analyzed by measuring and observing corona wires through a simple test method, the requirements of analysis test equipment are simple, the test process is convenient and easy to implement, and analysis results can visually feed back material characteristics; a new analysis solution thought is provided for analysis of the high polymer material, and the convenience of analysis and test of the high polymer material in digital printing equipment is greatly improved.

The present invention relates to a Bloch surface wave exciter based on nanoparticles, which is used in a spectrometer, comprising a glass substrate and a Bragg reflection unit arranged on the glass substrate, wherein the Bragg reflection unit is formed by alternating stacking of high-refractive index medium layers and low-refractive index medium layers, wherein the top layer is a defect layer, and the surface of the top layer is provided with nanoparticles. The present invention also provides a corresponding spectrometer and a measurement method thereof. The Bloch surface wave exciter of the present invention enables the in-plane size of the spectrometer to reach the nanometer level, and can measure smaller light source signals. Moreover, the preparation method of the present invention is simple and low in cost. In addition, when the spectrometer of the present invention is used, the requirements for the incident spectrum are simple, and there is no requirement for the polarization of the incident spectrum. At the same time, the present invention only needs to take a back focal plane image once, which is not only simple to operate, but also saves time.

The invention belongs to the technical field of batteries, and relates to a preparation method of a sacrificial anode additive. The preparation method comprises the following steps: dissolving a lithium salt in water, then adding a carbon-based conductive agent, and uniformly dispersing to obtain a mixture A; adding a carbonic acid compound or air into the mixture A to obtain a mixture B; and carrying out solid-liquid separation on the mixture B, collecting a solid, washing and drying to obtain a target product, namely the sacrificial anode additive. According to the preparation method, uniformity and nanocrystallization of the material can be achieved, the preparation time is greatly shortened, the preparation efficiency is high, and large-scale mass production can be achieved; the prepared positive electrode additive comprises nanoscale lithium carbonate and a carbon-based conductive agent, and has high initial charge capacity.

The invention discloses a method for preparing an information storage material based on a photochromic effect, belonging to the technical field of inorganic photochromic functional luminescent materials. The information storage material based on a photochromic effect of the invention has the chemical formula: A2Ge4O9:xBi 3+ ; Wherein, A includes one or more of Li, Na, K and Rb; x is Bi 3+ The doping amount is 0≤x≤0.08. The surface color of the information storage material of the present invention changes from white to yellow under ultraviolet light, and the color can be reversibly changed, so that information can be written, stored and erased based on the photochromic effect.

The invention discloses a data transmission device, a processor, a chip, a board card and a data transmission method. The data transmission device may be included in a computing device, which may be included in a combined processing device, which may also include an interface device and other processing devices. The computing device interacts with other processing devices to jointly complete computing operation specified by a user. The combined processing device can further comprise a storage device, and the storage device is connected with the computing device and the other processing devices and used for storing data of the computing device and the other processing devices. According to the scheme disclosed by the invention, an optimization scheme of convolution operation is provided, the requirement on the pendulum number of software can be saved, and the high-speed computing power of a processor is fully utilized.

The present invention provides an aromatherapy method based on powdered essential oil, which belongs to the field of aromatherapy technology and includes the following steps: metering: metering the powdered essential oil to quantitatively take the essential oil for use; releasing: applying physical operations to the essential oil put into use, breaking the microcapsules encapsulating the essential oil, and releasing the essential oil therein; diffusion: diluting the essential oil released from the microcapsules with air to diffuse it within a certain spatial range. In the embodiment of the present invention, since powdered essential oil is used, it has the advantage of avoiding the defects of liquid essential oil in storage, transportation and use. Moreover, since powdered essential oil does not have the easy leakage, strong fluidity and strong corrosiveness of liquid essential oil, the requirements for the metering device are relatively simple, which can reduce the design difficulty and cost.

The utility model relates to the technical field of constructional engineering, in particular to an outer wall waist line waterproof structure which comprises an outer wall body and a waist line arranged on the outer side of the outer wall body, the waist line is of a one-stage or multi-stage step downward structure, an arc-shaped chamfer is arranged at the connecting position of the first-stage step structure and the outer wall body, and the outer wall waist line waterproof structure further comprises a waterproof roll layer. The waterproof roll layer covers the outer wall body located on the upper portion of the waist line of the step structure, the arc-shaped chamfer, the top face of the first-stage step structure of the waist line and the step faces of the other step structures of the waist line. Compared with the prior art, the waterproof structure has the advantages that the waist line has no strict gradient limitation, the step structures can be designed into any number, and the width of the upper step structure is larger than that of the lower step structure, so that the waterproof structure is more flexible in design, simple in requirement and wider in application range.

The application provides a content extraction method based on cell membrane capacitance change, and belongs to the field of cell-level micromanipulation technology, and comprises the following steps: S1, a change relationship between cell membrane capacitance and cell membrane surface area is established; S2, a change relationship between cell membrane surface area and volume is approximately established; S3, high-resistance sealing and membrane rupture of cells are completed, constant voltage cell content extraction operation is performed, and cell membrane capacitance values in the extraction process are obtained in real time through capacitance fitting; S4, content extraction amount is estimated; S5, actual cytoplasm extraction amount is calculated based on a rotary L-shaped electrode, the relationship model established in S2 is corrected, and finally, quantitative extraction of cell contents is realized. The application utilizes an electrical model of cell membrane capacitance, realizes real-time feedback of cell content extraction amount, realizes quantitative control of content extraction, can realize a cytoplasm extraction success rate of 62.5% in the case of a whole cell patch clamp structure, and the average cytoplasm extraction amount control error is less than 6% of the total cell volume.

The application discloses a kind of high-strength plastic β titanium alloy strip and whole-process preparation method, the β titanium alloy strip is composed of the following mass percentage components: Cr 7.7%~8.3%, Mo 4.9%~5.5%, V 4.9%~5.5%, Al 2.7%~3.3%, Fe≤0.20%, C≤0.03%, N≤0.02%, H≤0.010%, O≤0.10%, and the rest is Ti;The preparation method comprises: one, forging;Two, hot rolling;Three, cold rolling;Four, heat treatment.The β titanium alloy strip and whole-process preparation method of the application are overall planning from component design to final heat treatment whole-process procedure, improve production efficiency, shorten preparation time, and the β titanium alloy strip solid solution state microstructure is equiaxed β fine grain structure, strength-plasticity matching is high, horizontal longitudinal organization performance is uniform, with excellent comprehensive mechanical properties, applicable to metal processing field.

The present invention discloses a robotic inside-out patch clamp technique based on the detection of vesicle rupture process, which relates to the field of cell-level micromanipulation technology, and specifically includes S1: by analyzing the mechanism of vesicle formation and rupture, a method for sealing a monolayer membrane patch is obtained by using a reverse verification method, thereby verifying that a monolayer membrane patch with the inside facing out is obtained; S2: a fluid exchange device is designed to ensure the rapidity and stability of the fluid exchange process; S3: a monolayer membrane patch with the inside facing out is obtained by robotic operation. The present invention completes the robotic inside-out monolayer membrane patch on adherent cells for the first time through the detection of the vesicle rupture process and the design of a rapid fluid exchange device, which is of great significance for promoting the promotion and application of the inside-out patch clamp technique.

The application discloses a kind of preparation methods of toughening traffic 6016 aluminum alloy, belong to metal material preparation technical field;Including the following steps: alloy uses the aluminum ingot with purity more than 99.9%, intermediate alloy Al-20Si, Al-10Mg, Al-50Cu, Al-10Mn, Al-20Cr, Al-20Zn, Al-20Er, Al-5Ti-B, according to the proportioning of element mass ratio Si:Mg:Cu:Mn:Fe:Cr:Zn:Ti:Er=(1.0~1.5):(0.25~0.6):(<0.20):(<0.50):(<0.10):(<0.20):(<0.15):(0.15,0.30,0.45) smelting, the cast ingot that smelts is homogenized annealing, rolling is obtained The plate material with the thickness of 1mm, then after heat treatment obtains the aluminum alloy plate of T4P state.The application adds rare earth element Er, heat treatment toughening traffic 6016 aluminum alloy, so that aluminum alloy has preferable plasticity under the premise of maintaining high hardness and high strength, is expected to improve the strength and plasticity of 6016 aluminum alloy in practical application, conducive to the wide application of 6016 aluminum alloy.

The invention discloses a detection device and method for preventing a photovoltaic bracket from being deformed, comprising a photovoltaic bracket, a photovoltaic panel and a detector; the photovoltaic panel is laid on the photovoltaic bracket; the detector is symmetrically arranged on the photovoltaic panel; the detector comprises a mounting frame, a photoelectric sensor, a control board and a single-chip microcomputer; the mounting frame is arranged on the photovoltaic panel, the photoelectric sensor and the control board are both arranged on the mounting frame, the single-chip microcomputer is arranged on the control board, and the single-chip microcomputer and the control board are electrically connected; the output end of the photoelectric sensor is connected to the input end of the control board, and the probes of the photoelectric sensor are arranged relatively. Symmetrically arranged photoelectric sensors, one of which emits a laser signal, and the other receives a laser signal. When the photovoltaic bracket is deformed, the position of the photoelectric sensor emitting the photoelectric signal or the position of the photoelectric sensor receiving the photoelectric signal is offset, generating signal feedback, and the single-chip microcomputer processes the signal feedback and transmits it.

The utility model discloses a non-visual automatic protection frame device, and belongs to the technical field of protection technologies in the debugging and running process of a robot. The robot comprises a frame, the frame comprises an upper layer and a lower layer, the upper layer is provided with a driver, a controller and a power source, the lower layer is used as a robot activity space, and a movement mechanism is arranged at the bottom of the frame; the top of the protection mechanism is connected with the top of the frame, and the bottom of the protection mechanism penetrates through the upper layer of the frame to be connected with a robot; the controller, the driver, the protection mechanism and the movement mechanism are in communication connection; according to the utility model, the tension sensor and the horizontal sensor are ingeniously combined, so that the spatial position of the robot relative to the protective frame can be accurately sensed. By means of the innovative design, the position of the protection frame can be automatically adjusted, it is guaranteed that the robot is located in a safety protection center area all the time, and the protection effect is greatly improved.

The invention discloses a carbon fiber in-situ conversion skin-core structure superhigh temperature carbide ceramic fiber and a preparation method thereof. The fiber is composed of a surface layer and a carbon fiber core layer, and the surface layer is an ultrahigh-temperature ceramic phase of tantalum carbide, hafnium carbide, zirconium carbide or titanium carbide and is formed by performing a molten salt disproportionation reaction in high-temperature liquid molten salt. The preparation method comprises the following steps: placing the carbon fibers at the bottom of a graphite crucible, adding NaCl and KCl mixed salt as a molten salt medium, adding ultrahigh-temperature metal powder and corresponding transition metal fluoride to promote the reaction to permeate in the whole carbon fibers, and finally realizing the controlled growth of the ultrahigh-temperature ceramic fibers with different skin-core proportions.

The invention discloses a crack tip position displacement field identification method based on a digital image correlation technology, and the method comprises the steps: calculating a crack tip displacement field based on a crack tip displacement change gradient, and removing rigid body displacement. Two equal-length horizontal lines are arranged on the two sides of the crack surface, and the horizontal coordinates of the crack tip are determined by calculating the change of the vertical displacement difference between the two horizontal lines in the crack propagation direction. Setting a vertical line to connect the horizontal lines on the two sides of the crack through the horizontal coordinates of the crack tip, and determining the vertical coordinates of the crack tip by calculating the change of the vertical displacement of the vertical line along the vertical line. The method only needs to consider the displacement difference change of the two sides of the crack expansion surface and the crack tip vertical line, does not need to use a theoretical formula to fit the crack tip displacement field, simplifies the calculation process, improves the crack tip identification efficiency, and is convenient and simple.

The invention provides a method for intelligently regulating and controlling the solubility of an anionic surfactant-zwitterionic surfactant mixture in an engine mode, which comprises the following steps: by taking a selenium-containing zwitterionic surfactant 3-tetradecyl selene-1-propane sulphobetaine (C14SeSB) as an engine, carrying out H2O2 oxidation and Na2SO3 reduction reaction to obtain a selenium-containing zwitterionic surfactant mixture; the soluble reversible stress intelligent response of the mixture of the C14SeSB and the anionic surfactant sodium dodecyl sulfate (C12SS) is driven, and the high-efficiency recovery and reutilization of the mixture of the C14SeSB and the C12SS at the recovery rate of not less than 97.3% can be realized. The technology provided by the invention can realize intelligent reversible regulation and control of the solubility of the mixture of the zwitterionic surfactant and the anionic surfactant. According to the technology disclosed by the invention, the Krafft temperature of the mixture of the zwitterionic surfactant and the anionic surfactant can be cyclically regulated and controlled for multiple times. The method is simple in technical equipment requirement, low in energy consumption and low in economic cost.

This invention belongs to the field of aviation propulsion system technology and discloses a method for operating a hybrid lift and thrust system for a low-altitude vertical takeoff and landing aircraft. The system includes a low-pressure compressor, a starter / generator, a high-pressure compressor, a gas turbine, an adjustable thrust nozzle, a PEM fuel cell, an electric motor, and a lift propeller. The low-pressure compressor, starter / generator, high-pressure compressor, and gas turbine are coaxial. The compressed air from the low-pressure compressor is divided into two paths. One path of compressed air enters the high-pressure compressor for further pressurization and then enters the main combustion chamber, which is connected to the gas turbine at the rear end. The other path of compressed air from the low-pressure compressor enters the cathode inlet of the PEM fuel cell and the adjustable thrust nozzle. The PEM fuel cell supplies power to the electrical busbar, and the reaction end of the PEM fuel cell is connected to a mixer. The exhaust port of the gas turbine is connected to the mixer, which mixes the exhaust gas from the gas turbine and the exhaust gas from the PEM fuel cell before supplying it to the adjustable thrust nozzle at the rear end to provide thrust. The starter / generator is connected to the electrical busbar, which is connected to the electric motor, and the motor shaft drives the lift propeller. This invention can be used in manned and unmanned aircraft that employ rotor takeoff and landing and thrust cruise, reducing the number of shafts used, simplifying the system structure, reducing the demand for H2, and increasing system operating time.

The present invention relates to the field of adhesive tapes, and in particular to a BOPP adhesive tape with oxidative discoloration at a fracture and a preparation method thereof, the preparation method comprising: mixing an acrylic emulsion and an organic photochromic material to prepare a photosensitive discoloration emulsion; preparing a pressure-sensitive adhesive; sequentially coating a photosensitive discoloration emulsion and a pressure-sensitive adhesive on a BOPP biaxially oriented polypropylene film to form a discoloration layer and an adhesive layer respectively to prepare the adhesive tape, and rolling the tape up. The adhesive tape of the present invention is endowed with a discoloration function by arranging a discoloration layer between the adhesive layer and the base layer; both sides of the discoloration layer can be treated to be opaque to achieve the technical effect that the adhesive tape only changes color at the cut; in order to improve the stability of its discoloration, chitosan methacrylate is added to improve the tensile effect.

The invention discloses a fluorescence sensor for detecting miRNA based on hybridization chain reaction as well as a preparation method and application of the fluorescence sensor. The fluorescence sensor comprises a Com1 chain which can be specifically combined with a target miRNA and is completely complementarily paired with the target miRNA; a Com2 chain capable of complementarily pairing with the Com1 chain part and used as an initiator chain of a hybridization chain reaction; the hairpin DNA comprises an H1 chain and an H2 chain, and the H1 chain is modified with a fluorophore and a corresponding fluorescence quenching group. Different from a traditional hybridization chain reaction amplification structure, a pair of nucleotide complementary double strands is added to the fluorescence sensor to serve as an intermediate structure for triggering the hybridization chain reaction, so that the fluorescence sensor can be independently assembled into the sensor for use and can also be flexibly modified on a carrier such as a silicon nanowire through the intermediate structure; therefore, different detection application scenes can be adapted. The fluorescence sensor disclosed by the invention is good in biocompatibility, high in specificity and high in sensitivity, has a good and wide application prospect, and provides a brand new thought for detecting miRNA.

The invention discloses a method for preparing p-cymene, which belongs to the field of cymene preparation. The method for preparing p-cymene comprises the following steps: loading a prepared activated carbon-loaded ZnSO4 / NiSO4 catalyst into a reactor, heating the reactor, and continuously passing a mixed olefin whitening liquid into the reactor using an inert gas, and collecting the liquid after the reaction from the upper outlet of the reactor to obtain p-cymene. The method for preparing p-cymene of the invention does not use precious metals, and the catalyst is cheap; the catalyst has good selectivity, and the selectivity of p-cymene reaches more than 99%; the requirements for raw materials are simple, and the mixed olefin whitening liquid of the factory can be used as the raw material, thereby improving the utilization rate of the raw materials and reducing the cost.

An area measurement method based on probability statistics comprises the following steps: constructing an auxiliary pattern with any regular shape and known accurate area, enabling the auxiliary pattern and a measured pattern to be located in the same plane, obtaining a measured pattern image and an auxiliary pattern image, mapping the measured pattern image and the auxiliary pattern image into a front view, carrying out preprocessing, gridding processing and edge detection, and carrying out area calculation on the front view of the detected pattern subjected to edge detection; according to the method, the area of the measured pattern can be measured only through one monocular camera, calibration of internal and external parameters of the camera is not needed, the requirement for the position relation between the measured pattern and the camera is extremely low, the generalization ability of an algorithm in various environments is guaranteed under the condition that the area measurement accuracy is guaranteed, and the method is suitable for large-scale popularization and application. And the stability of a measurement result is greatly improved.

The invention provides a remediation agent and a remediation method for hexavalent chromium contaminated soil, and relates to the field of contaminated soil treatment and remediation. The remediation agent for the hexavalent chromium contaminated soil comprises the following raw materials in percentage by mass: 25-40% of a photoinitiator, 5-10% of organic acid and 50-65% of water, the photoinitiator comprises polyethylene glycol. The remediation agent for the hexavalent chromium contaminated soil can reduce hexavalent chromium in the soil into trivalent chromium in situ, and the organic acid can reduce the pH value of the soil, relieve soil salt damage, improve the soil environment and promote crop growth; in addition, the polyethylene glycol and the organic acid can also play a role of a stabilizer to prevent trivalent chromium in the soil from being oxidized into hexavalent chromium, and when the remediation agent is used for treating the chromium-contaminated soil, the remediation agent is simple in equipment requirement, easy and convenient to use, low in cost, high in remediation efficiency, low in operation cost, free of secondary pollution and wide in application and popularization prospect.