249results about How to "Improve intuitive effect" patented technology

The invention discloses a method and a device for display of navigation information and relates to the technical field of map navigation. The method comprises the following steps: detecting whether a client side is in a screen-locking state; acquiring real-time navigation information applied to navigation of the client side in real time if the client side is in the screen-locking state to obtain navigation elements under the real-time navigation information; and based on an internal storage based on a pattern under the current screen-locking state, rendering the navigation elements under the real-time navigation information to a screen in the screen-locking state in real time. According to the method and the device for the display of the navigation information, the navigation information is displayed to a user in a picture form, so that the navigation information can be dynamically displayed on a screen-locking interface; the intuition performance is high, the influence of the environment in which a voice is located is reduced, the user can see the navigation application without unlocking the screen to perform a series of operations such as finding and switching to navigation application and then entering into a foreground so that the navigation can be implemented by directly seeing the navigation elements; the influence on the driving of the user is reduced.

The invention discloses a method for realizing a flexible cable assembling model in a virtual assembling environment according to the application requirements of cable assembling process design and verification in the field of virtual manufacturing. In the method, the cable assembling model is divided into a cable branch model and an electric connector model and the method is implemented by the steps of CAD design information read, model information architecture in the virtual environment, real-time assembling operation and the like, wherein the cable branch model can realize real-time flexible deformation according to a loaded mass spring system and perform clamping assembling operation by setting the attribute of the mass point; and the electric connector model can realize the cable assembling operation such as plugging and the like according to a restraining model. The method adopts the design information of the cable and overcomes the defect that the conventional cable assembling process design and verification depend on a physical model heavily on the premise of not changing cable design parameters. The method has the characteristics of obviously improving the efficiency of product assembling design and reducing design cost, along with accurate model, good intuitive performance and interactivity.

The invention discloses a method for designing jewelry by using a jewelry design platform. The method comprises the following steps that the jewelry design platform comprising an independent jewelry element data storage system, a display system and an output system is used to divide the jewelry into a jewelry ring, a jeweled tiara and gemstone, and to respectively establish a plurality of element libraries by class according to every part of the jewelry, each element library also comprises thousands of separate elements, the elements are combined and matched by class, interfaces of every classes are matched, consumers select the separate elements of each subdivided part from each element library to randomly match, modify and combine to design the favorite jewelry, images, texts or symbols can be randomly designed on the jewelry, and billions of schemes can be designed.. After satisfaction, the model is three-dimensionally printed by an output system to be tried on by consumers, the personalized and differentiated design of the jewelry can be quickly and independently carried out by the consumers, and a post-industrial platform is built for a C2B model.

A water quality express-analysis device of multi parameter includes an express-analysis device, the first accessory to load reagent, heating device and the second accessory to load the sampling device. The invention can determine many water samples quickly by integrating the apparatus and the reagent in the accessory. So it can get the content of the residue chlorine, the all chlorine, the ClO2, the chloride, the Cr6+, Mn, Ca, Fe, Al, Cu, Zn, Cd, Pb, Hg, Se, Na, Arg, Ti, Ba, Be, Boron, Ni, Mo, molybdenum, the fluoride, the sulfide, the cyanide, the whole phosphor, the ammonia nitrogen, the solving oxygen, the oxygen cost, the volatile hydroxybenzene, the anion, the chroma, the smell, the opacity, the ozone, the nitrate, the nitrite nitrogen, the bromate, the sulfate, the chlorite, the acrylamide, the formaldehyde and the pH.

The invention discloses a 95598 telephone traffic work order prediction and transaction early warning method based on a multi-prediction model, and relates to a power telephone traffic work order analysis method. At present, an abnormal threshold value is artificially determined through a comparison value, a loop ratio value and an amplification value, and the threshold value cannot be accuratelyand scientifically set in real time, so that the monitoring and early warning, problem positioning and trend prediction capabilities are insufficient. Based on the LSTM neural network deep learning technology, a scientific index transaction prediction model is established, the mathematical relationship of all indexes is studied, and short-term telephone traffic work order confidence transaction prediction and intelligent early warning application are achieved. According to the technical scheme, index analysis early warning is obtained from a large number of indexes more efficiently, more leanand more intelligently, and the working efficiency of customer service index analysis and quality control is improved. The defect that traditional curve fitting modeling needs periodic model correction is overcome, online real-time dynamic learning prediction and early warning analysis are supported, and the monitoring early warning, problem positioning and trend prediction capabilities of daily indexes are improved.

The present invention provides a method for designing the parameter of the wave trap of the magnetic suspension flat high-speed rotor system. The magnetic suspension flat high-speed rotor system is considered with a kinetics model of the first order elastic mode and is translated into a complex-coefficient single-variate open-loop transfer function. The double-frequency Bode chart of the open-loop transfer function of the complex coefficient in different rotary speed is drawn. The phase angle allowance of elastic mode in each rotary speed is calculated, and the series-connected progression, central frequency and polar point amortization of the elastic self-excited vibration restraining used wave trap are designed according to the phase angle allowance curve. Basing on the double-frequency Bode chart the invention presents a method for designing the parameter of the wave trap which comprises a magnetic suspension flat high-speed rotor system with strong gyroscopic effect and is used for restraining the first order elastic self-excited vibration. Compared with the common multiple-variate system designing method such as state space analyzing method and the like, not only has excellent immediacy and robustness, but also can minimize the effect of the wave trap to the nutation stability, and thus the invention the invention is more suitable to be used in the actual magnetic suspension high-speed rotor system such as posture-controlling energy-accumulating fly wheel, the magnetic suspension counteracting wheel, the magnetic suspension control moment gyroscope and the like.

The invention discloses an optimization method for azimuth ambiguity in a space-borne TOPSAR mode, which comprises the following steps: reading in relevant parameters; acquiring azimuth beam 3dB width, the shortest slant distance from a satellite to a target, a mixed factor, the shortest slant distance from the satellite to an equivalent rotation point, the maximum angle of center beam scanning, separation of azimuth antenna array elements, coordinates of a selected position of the azimuth, and the azimuth ambiguity of a selected position of the azimuth; drawing a changing curve of the azimuth ambiguity; and acquiring the worst value of the azimuth ambiguity under different pulse recurrence frequencies and drawing the worst value curve of the azimuth ambiguity. In the invention, when the azimuth ambiguity is acquired, the space-variant characteristic with the azimuth is considered fully, and the result has higher reliability; the azimuth ambiguities in different positions are acquired independently and can be parallel processed to improve the processing efficiency; and the changing curve of the azimuth ambiguities with the azimuth positions visually reflects the changing condition of the azimuth ambiguities in the whole azimuth scene.

The invention relates to a selenium-rich foliar fertilizer and a preparation method and application thereof. The selenium-rich foliar fertilizer is prepared from the following components in part by weight: 25 to 35 parts of castor oil polyoxyethylene ether, 6.25 to 12.5 parts of 2a,3a,22s-tetrahydroxyRethyl-beta-homo-7-oxa-5a-cholest-6-ketone 0.10 percent powder, 2.9 to 3.6 parts of sodium selenite, 52.5 to 55 parts of glutamic acid, 25 to 30 parts of ethanol, 0.1 to 0.15 part of caramel pigment, 25 to 27.5 parts of carbamide, 12.5 to 15 parts of boric acid and the balance of water. The selenium-rich foliar fertilizer has an economic formula, lasting functions, and obvious selenium enriching effect, yield increasing effect and visual effect after being applied to crops. The preparation method is the conventional mixing and stirring method. The process is simple, and a small number of devices are used. The selenium-rich foliar fertilizer is diluted by water in an amount which is 150 to 200 times that of the fertilizer and is directly sprayed on the leaf surfaces of plants. The selenium-rich foliar fertilizer is simply applied and has high applicability.

An experiment apparatus for establishing a gradient temperature field in water is characterized in that a transparent water tank filled with water is arranged on a base, a front sidewall and a rear sidewall in the transparent water tank are at least provided with one semiconductor cooler support provided with a semiconductor cooler, the semiconductor cooler support and the semiconductor cooler are immersed into the water, the distance from the upper surface of the semiconductor cooler to the water surface is at least 100mm, the front side surface of the semiconductor cooler is a hot surface or a cold surface, the hot surface is perpendicular to a horizontal plane and is parallel with the front sidewall of the transparent water tank, horizontal central planes of the two semiconductor coolers arranged at the front side and the rear side are within the same horizontal plane, the front sidewall in the transparent water tank is provided with one row of temperature sensors, the front sidewall outside the transparent water tank is provided with a temperature display connected with the temperature sensors through wires, a laser support provided with a semiconductor laser is arranged on the base at the left side of the transparent water tank, and a laser beam emitted by the semiconductor laser transmits between the two semiconductor coolers.

A sticking-on proof brake system of automobile is prepared as connecting microprocessor to monolithic computer (MC) through serial communication module and output end of MC to input end of ABS wheel speed signal analog module, connecting output end of said analog module to controller of sticking-on proof brake system, collecting regulator control signal by ABS valve-control signal collection module and sending data to microprocessor, connecting input end of ABS data sampling module to said controller and connecting output end of said sampling module to input end of microprocessor.

The invention provides a kit for detecting the total polyphenol content in beverage, a preparation method of the kit and a method for detecting the total polyphenol content in beverage using the kit, and belongs to the field of food nutrition detection. The kit includes a coloring agent, a color stabilizer and a standard substance. According to the invention, an optimized Folio-Ciocalteu method is adopted; a beverage sample develops color after being subjected to a water bath reaction with a combined reagent at 45 DEG C for 0.5 h, and the color reaction time is reduced; the application of the kit to ultraviolet spectrophotometers and semi-automatic biochemical analyzers is simple, easy to operate and high in sensitivity, and a standard curve is not required, so that the detection time is greatly reduced, especially the application to the semi-automatic biochemical analyzers, the detection result can be read visually, and the detection difficulty is reduced; a plurality of beverage samples can be subjected to coloration and detection at the same time, so that the detection is efficient, accurate and fast, and batch detection is facilitated; therefore, the kit and detection method, provided by the invention, have great application prospects in detecting the total polyphenol content in liquid or solid beverage.

The invention relates to a selenium-rich foliar fertilizer, a preparation method and an application thereof. Per 500 parts by weight of the selenium-rich foliar fertilizer is prepared by mixing following components including, by weight, 25-35 parts of polyoxyethylene castor oil, 0.35-0.4 parts of 85% powder of gibberellins, 0.4-0.6 parts of sodium selenite, 10-14 parts of potassium dihydrogen phosphate, 25-30 parts of ethanol, 25-27.5 parts of carbamide, 0.4-0.6 parts of hydrochloric acid and the balance water. The selenium-rich foliar fertilizer is reasonable and economical in formula, is low in cost, is durable in effect and has a significant intuitive effect, a significant yield-increasing effect and a significant selenium-rich effect. The preparation method is a conventional mixing and stirring method which is simple in technology and less in required equipment. The application of the selenium-rich foliar fertilizer is that the selenium-rich foliar fertilizer is diluted by 150-250 time with water and is directly sprayed onto leaf surfaces of a plant. The selenium-rich foliar fertilizer is simple in application method and is strong in applicability.

The invention discloses a 95598 telephone traffic work order prediction and transaction early warning method based on LSTM deep learning, and relates to a power telephone traffic work order analysis method. At present, an abnormal threshold value is artificially determined through a comparison value, a loop ratio value and an amplification value, and the threshold value cannot be accurately and scientifically set in real time, so that the monitoring and early warning, problem positioning and trend prediction capabilities are insufficient. Based on the LSTM neural network deep learning technology, a scientific index transaction prediction model is established, the mathematical relationship of all indexes is studied, and short-term telephone traffic work order confidence transaction prediction and intelligent early warning application are achieved. According to the technical scheme, index analysis early warning is obtained from a large number of indexes more efficiently, more lean and more intelligently, and the working efficiency of customer service index analysis and quality control is improved. The defect that traditional curve fitting modeling needs periodic model correction is overcome, online real-time dynamic learning prediction and early warning analysis are supported, and the monitoring early warning, problem positioning and trend prediction capabilities of daily indexesare improved.

The invention discloses a method for acquiring road condition information in real time, which comprises the followings steps: after establishing a video telephone, a mobile terminal positions and displays current position of a user; the mobile terminal calculates all roads nearby the current position for the user to select, or calculates next road information according to a formed route chart and the current position; the mobile terminal informs a mobile service side of the road information selected by the user or the calculated next route information. The invention simultaneously discloses a system for acquiring the road condition information in real time. By using the method and the system, users can conveniently and intuitively select the road needed to learn and can watch the traffic condition of the selected road conveniently.

The present invention relates to a virtual and actual combined sewage treatment plant test bed and a construction method thereof. The test bed comprises a physical layer, a control layer and a monitoring layer. The physical layer comprises a sewage treatment process process simulated virtual part and a semi-physical simulation part. A sewage treatment process process simulated computer carries out numerical simulation on a sewage treatment process and transmits the process parameter obtained from the simulation to a semi-physical simulation system. The control layer comprises a GE company RX3i model PLC. The monitoring layer comprises a monitoring computer, network equipment and test equipment. The intuitive characteristic and dynamic sense are good in the process simulation and display of the sewage treatment process, a physical model and a digital simulation system are integrated well, and the effect after attacking a sewage treatment control system can be displayed. The data exchange between two sides is realized by using the object link of process automation and the embedding technology OPC technology, the flexibility is high, and no hardware wire connection is realized.

The invention discloses a free attitude target calibrating system for landing of a helicopter. The free attitude target calibrating system comprises a target board and a host machine, the host machine is connected with a target calibrating instrument, a laser range finder and an inclinometer, the inclinometer is placed on a horizontal platform of the helicopter, a sensor of the inclinometer is fixed inside the helicopter, the host machine connected on a socket is measured by aerial insertion to the state of the host machine, a CCD (charge coupled device) camera of the target calibrating instrument and a calibrating mirror are integrally connected via a flange and then connected on an insert rod and directly inserted in an outer hanging frame of the helicopter, videos of the CCD camera are output to the host machine via a connecting wire, the laser range finer is formed by an observing mirror and a laser transmitting and receiving machine which is directly inserted in the outer hanging frame of the helicopter, and the observing mirror is connected with a view window via a photovoltaic conversion circuit, so that measured numerical values can be directly read via the view window. The free attitude target calibrating system is high in efficiency, fast in speed, convenient and simple to operate, and applicable to motorized and quick calibration of free attitude target of the helicopter.

The invention discloses an array-type 96-channel rapid detector for pesticide residue, which comprises a casing. A front panel of the casing is provided with an LCD screen and a plurality of keys; the upper surface of the casing is provided with a printer and a cover plate of a 96-channel sample-detection module; the rear part of the casing is provided with a power socket, a power switch and an RS232 / USB interface; and the 96-channel sample-detection module, a microprocessor and a power source are arranged inside the casing, wherein the 96-channel sample-detection module of the 96-channel rapid detector for pesticide residue is formed by combining two 48-channel detection modules; a module light source is an array-type light source which integrates and combines 96 light-emitting diodes 412 nanometers in wavelength; a module detector is an integrated-type array combination of 96 photoelectric sensors; and the array-type light source and the array-type detector are in one-to-one correspondence of arrangement mode and cooperate with each other. The rapid detector can rapidly detect the content of organophosphorus and carbamate pesticide residue in foods, vegetables, fruits and water so as to guarantee the safety of eaters.

The invention relates to measurement of peroxide values, and in particular relates to an edible oil peroxide value measurement combined reagent and a detection method. The edible oil peroxide value measurement combined reagent comprises a polarity organic solvent, a reducing agent, a color development reagent and a color development stabilizing agent, wherein the polarity organic solvent comprises ethanol with the mass concentration of 237-710 g / L in percentage by mass; the reducing agent comprises ferrous sulfate with the mass concentration of 1-20 g / L in percentage by weight; the color development reagent is a sulfosalicylic acid solution with the mass concentration of 300-1,000 g / L; and the color development stabilizing agent is a pyridoxamine dihydrochloride solution with the mass concentration of 20-800 g / L. By a colorimetric analysis method, the operation is quick and simple, and interference caused by heating on a detection result is reduced; the types of the needed detection reagents is few, and the reagents are convenient to combine and carry; and the edible oil peroxide value measurement combined reagent can develop and detect a plurality of oil samples at the same time, is uniform in developing, is low in toxicity and even non-toxic, and is safe and environmentally-friendly.

The invention provides a phased array identification method and system to realize object motion recognition including gesture recognition, automotive anti-collision recognition, collision avoidance and anti-attack recognition of an unmanned aerial vehicle, and smart missile and ship collision prevention recognition. The system is composed of a phased array antenna array, a phased array T / R assembly array and a signal processing system. A phased array millimeter wave is emitted and a millimeter wave reflected by a detected object is received; and calculation is carried out to determine a spacecoordinate of the detected object. The calculation includes one based on an artificial intelligence algorithm and is implemented by steps of target recognition, correction, searching, tracking, and gazing and the like. The signal processing system includes a Von's computer, a non-Von's computer, a neural network, and an artificial intelligence system. The phased array identification system can bemanufactured into a two-in-one MMIC chip and a three-in-one SoC MMIC chip.

The rapid analysis instrument includes body case, fixed ring of color comparison pool, multiple push button keys, liquid crystal screen, RS232 interface, as well as color comparison pool, color comparison bottle, monochromatic source, photoelectric detector, and microproceesor etc. The instrument also includes printer embedded in body case, and heater for sample. The disclosed instrument is capable of measuring content of following objects in food: cadmium, chrome, nickel, rare earth, nitrite, formaldehyde, amylase, toxicity of pesticide residue, vitamin E, trimethylamine etc.

The invention discloses an integrated water resource management system in an irrigation area. The management system comprises an early warning module, a data display module, a water transfer management module, a gate group dispatching module, a water regime statistics module, a project patrol module and a drought prevention and flood fighting module; The data display module is based on the GIS platform, integrates the gate operation monitoring data, the pump station operation monitoring data, the alarm information, the video monitoring display and the dam safety monitoring data, and displays the same data through the GIS platform. The data display module comprises a GIS map module, a river basin GIS map provided by a regional water conservancy bureau is used, and on the basis of this, mainhydraulic structures, river courses, channels, survey points and irrigation districts are marked; A layered and hierarchical overlay display map layer in that data display module. The invention realizes the comprehensive management of water resources dispatching, decision-making command, water use management, video monitoring, engineering management, dam safety, flood control and drought resistance in irrigation districts.

The invention discloses a two-dimensional code anti-fake method and system based on a domain name. Two-dimensional codes of enterprise domain name information, commodity information and passwords are generated and printed on anti-fake tags arranged on commodities, the two-dimensional codes of the anti-fake tags arranged on the commodities are shot by handheld intelligent terminals, a first level of anti-fake protection is formed by judging whether the two-dimensional codes are matched or not, a second level of anti-fake protection is formed by shifting into a domain name website webpage which the production enterprise of the consumed commodities belongs to through the two-dimensional domain name information on the anti-fake tags, and a third level of anti-fake protection is formed by verifying the true commodity snapshots obtained on the webpage through verification codes on the anti-fake tags and obtaining the commodity information. Thus, the authenticity of the commodities is judged, and the most direct, convenient and effective method is provided for consumers to identify the authenticity of the commodities.

The invention relates to a hard intubation endoscope with an adjustable front-end angle. An eyepiece component is connected with a tip part sequentially through an operation part, a hard insertion part and an adjustable bent part; an image transmission element is a photoconductive fiber bundle and sequentially passes through the operation part, the hard insertion part and the adjustable bent part; an objective lens component is arranged in the tip part and is connected with the eyepiece component through the image transmission element; the operation part is matched with a light-emitting diode (LED) light source; a lighting optical fiber sequentially passes through the operation part, the hard insertion part, the adjustable bent part and the tip part; the operation part is provided with a rotating handle and comprises a steel cable; the steel cable passes through the hard insertion part and the adjustable bent part and is respectively connected with the rotating handle and the adjustable bent part, and can control the up-and-down bending angles of the adjustable bent part; and a pliers channel and a leak testing device are arranged. The hard intubation endoscope with the adjustable front-end angle has a unique design and a simple structure, is convenient to operate, has long service life, and is suitable for large-scale popularization and application.

The invention discloses an electro-technical and electronic wiring practical training device, which consists of a case and an internal circuit thereof. Indicator lamps, wiring terminals, a switch and mounting holes are arranged on a panel of the case. A circuit board, a power supply and connecting wires are arranged in the case. A power socket is arranged on the back surface of the case. The number of the indicator lamps is the same as that of the wiring terminals. Either the indicator lamps or the wiring terminals are fixedly arranged in pairs in an upper row and a lower row on the panel of the case. The indicator lamp and the wiring terminal in each pair are corresponding in upward and downward directions. According to the electro-technical and electronic wiring practical training device, more practical trainees can simultaneously conduct electro-technical and electronic wiring experiments, and the device is high in intuitiveness and convenient to operate; low direct current safety voltage passes through the indicator lamps of the device and binding posts, so that the operational safety is ensured; and urgent equipment is provided for the setting of electro-technical practical training courses in a computer network major and the like in colleges, and the practical abilities of students are improved.

The invention provides a method for computing the range ambiguity of a satellite-borne synthetic aperture radar (SAR) in a universal mode and belongs to the field of signal processing. The method comprises the following steps of: reading relevant parameters of a satellite-borne SAR system; acquiring range parameters in a skew state; widening a range antenna; acquiring the number of fuzzy areas; acquiring the energy of the fuzzy areas; computing the range ambiguity of a j-th position; and drawing change curves of the range ambiguity along range positions. The method has the advantages that during acquisition of skew distance between a range antenna pattern and a satellite platform as well as a target point, an earth sphere model is employed, the situation is approximate to actual situation, and a result is accurate and reliable; during acquisition of the range ambiguity, the space geometric characteristic under the condition of large scanning angle is taken into full consideration, andthe result is high in reliability; and for different designs of scanning angles in system design, different change curves of the range ambiguity can be obtained, and different scanning angles can be compared and optimized by analyzing the different change curves.

The invention relates to an examination data analysis method on the basis of a fuzzy synthetic evaluation model. The method comprises following steps: 1) an evaluation indicator system of examination data is established, wherein the evaluation indicator system directed at the examination data comprises following objects: test question analysis, examination analysis and student analysis; 2) evaluation factor sets and remark sets are determined; 3) the weight of each evaluation factor is determined through an analytic hierarchy method; 4) membership grade of each evaluation factor is determined and a fuzzy evaluation matrix is constructed; 5) a fuzzy synthetic evaluation result is obtained through the fuzzy matrix compound operation. By means of the method, there is no need to gather experts to analyze examination data so that subjective influence is reduced, the whole evaluation time of the examination data is greatly shortened, the work efficiency is increased, the project management cycle is shortened, and the score results are made to be more objective. Therefore, the method can be widely used in the field of examination data analysis. Therefore, the method can be widely used in the field of examination data analysis.

The invention discloses a control method and control device of remote switching-off of elevator without machine room. The method uses UPS emergency power supply to exert power to the brake coil, realizes switching-off by supplying power to the brake coil and realizes switching-on by breaking power to the brake coil. The control device includes an emergency power supply UPS, a control loop, a brake coil, wherein, the control loop includes an emergency start key switch SM1, an emergency switching-off button SM2; the emergency power supply UPS is connected to the brake coil through the emergency start key switch SM1 and the emergency switching-off button SM2. The invention uses UPS emergency power supply to supply power, realizes by controlling normal power supply switching-off and breaking power switching-on to the brake coil, has advantages of simple operation, easy switching off and the like features, which does not need prodigious manpower to open during mechanical remote switching-off and does not require special switching-off spatial position.

An experiment apparatus for a light transmission thermal lens effect in a non-uniform temperature field is characterized in that a base is provided with a transparent water tank in which water is arranged thereon, the right outside surface of the transparent water tank is provided with a coordinate paper, the front sidewall and the rear sidewall in the transparent water tank are provided with at least one semiconductor cooler support equipped with a semiconductor cooler, the front side surface of each semiconductor cooler is a hot surface or a cold surface and is perpendicular to a horizontal plane, the semiconductor cooler support(s) and the semiconductor cooler(s) are immersed into the water, the distance from the upper surface of the semiconductor cooler to the water surface is at least 100mm, a laser support equipped with a semiconductor laser is arranged on the base at the left side outside the transparent water tank, a laser beam which is emitted by the semiconductor laser and has a divergence angle ranging from 10 degrees to 20 degrees penetrates the left sidewall of the transparent water tank, then passes through the water between the semiconductor coolers at two sides, and is projected onto the coordinate paper to form a round light spot. The experiment apparatus of the present invention is simple in structure, low in cost, simple and convenient in method, and good in intuition, thus the experiment apparatus is especially suitable for demonstrating an experiment in a laboratory and in class.

The invention relates to an end-milling plane forming surface three-dimensional modeling method, and the method employs UG software for simulating a milling movement. The method comprises the steps: building a three-dimensional model of one-cycle movement of a main knife edge and an auxiliary knife edge during the plane milling; enabling the three-dimensional model to move in a feeding direction through commands of transformation and copying; obtaining the three-dimensional model on the whole forming surface, and obtaining a sleeking weld reinforcement region as a three-dimensional model of the forming surface. The method also proposes a method for determining the surface roughness Ra. The method for determining the surface roughness Ra comprises the steps: obtaining the maximum coordinates of the main knife edge or main sleeking knife edge of the sleeking weld reinforcement region through the commands of information and point of UG software, and obtaining the surface roughness Ra (mm). The UG three-dimensional modeling method is used for building the three-dimensional model of the forming surface, and the three-dimensional model visually reflects an end-milling plane forming surface, and obtains the surface roughness Ra value at the same time. The visuality is good, and the efficiency and precision are high.

The invention discloses a demonstrating and practical training device for a video monitoring system. The demonstrating and practical training device comprises an equipment cabinet as well as a all-directional video camera, a semispherical video camera, an infrared video camera, a gun-type video camera, a liquid crystal display and a video monitoring host which are mounted in the equipment cabinet through an n-shaped bracket, wherein the all-directional video camera, the semispherical video camera, the infrared video camera, the gun-type video camera and the liquid crystal display are all connected with the video monitoring host through a wiring terminal and a lead wire. The equipment cabinet can be used as a practical training environment while storing equipment terminals, a practical training of system connection can be directly carried out without dismounting the equipment terminals, and the equipment terminals in the equipment cabinet can also be conveniently taken out and mounted on other carriers to operate the practical training; and a transparent glass door and an internal illumination lamp of the equipment cabinet can guarantee that the integral connection and the running state of the system can be visually displayed under the condition that the cabinet door is not opened, so that the visibility is good and the operation is convenient. Equipment in urgent need is provided for operating an intelligent practical training course in majors such as electrical and automation major and the like, so that the operating ability of students is improved.