196results about How to "The principle is simple" patented technology

The invention discloses an electric pressure cooker with a cover closing detector. The electric pressure cooker comprises a pressure cooker body and a pressure cooker cover; the pressure cooker coveris arranged in the top of the pressure cooker body, handle rods are arranged symmetrically in the left and right sides of the pressure cooker body and fixedly connected to the pressure cooker body, the front side of the pressure cooker body is provided with a control panel, an indicating lamp is arranged in the left upper portion of the control panel, and a warning loudspeaker is arranged in a right upper portion of the control panel; and the top of the pressure cooker cover is provided with a fixed protruded column, the fixed protruded column is fixedly connected with the pressure cooker cover, the bottom edge of the pressure cooker cover is provided with touch protruded columns, and cover closing detection assemblies are arranged below the touch protruded columns respectively. The coverclosing detection assemblies are additionally arranged in the pressure cooker body, and the pressure cooker cover is provided with the corresponding touch protruded columns, and in the contact processof the cover closing detection assemblies and the touch protruded columns, whether the cooker is closed is warned and detected; and the electric pressure cooker is simple in the whole structure and strong in functions.

The invention discloses a data fusion method for a flush air data system and an inertial navigation system. The method comprises the steps that 1, navigation information outputted by the inertial navigation system is collected; 2, the air temperature, the static pressure, the density and the sound velocity are calculated on the basis of a selected air model according to the navigation information; 3, the true airspeed, the mach number, the dynamic pressure, the attack angle and the sideslip angle are calculated according to the navigation information, the air temperature, the static pressure, the density and the sound velocity; 4, a resolving initial value is selected according to an air data resolving result of the inertial navigation system at the current moment and an air data fusion processing result at the last moment; 5, the mach number, the attack angle, the sideslip angle, the static pressure and the dynamic pressure are resolved according to the resolving initial value and a surface pressure value at a pressure tap of a flight vehicle; 6, the air data resolving data of the inertial navigation system and a resolving result of the flush air data system are fused. According to the data fusion method for the flush air data system and the inertial navigation system, the common problems existing in the flush air data system can be solved, and the air data measuring performance can be improved.

The invention discloses a suspended three-dimensional wind speed and direction sensor structure. A central wind induction device is adopted, and a bottom elastic structure is driven to be correspondingly strained with wind speed and direction, so that a strain sensor fitting the elastic structure is deformed to generate an output. The suspended three-dimensional wind speed and direction sensor structure provided by the invention is simple in principle, can be used for monitoring three-dimensional wind speed and direction, and is convenient to mount, low in cost, low in temperature drift and suitable for the needs of portable and mobile measurement.

The invention discloses a face recognition method based on extraction of multiple evolution features. The method comprises the steps as follows: (1), classification of initial samples: the initial samples are divided into three parts, including training samples for feature extraction, training samples for weight evolution and test samples respectively; (2), feature extraction of the training samples: the training samples are subjected to feature extraction with a multiple seed space method, such as PCA (principal component analysis), LDA (linear discriminant analysis), LPP (locality preserving projection) or the like; and (3), multiple feature fusion evolution: features obtained with different feature extraction methods are fused according to a form that Phi is equal to the sum of Omega 1 Phi 1, Omega 2 Phi 2, ..., and Omega n Phi n, and the like, wherein Omega is a weight coefficient. An optimal weight coefficient is obtained with a genetic algorithm, so that fused features have better recognition effects than prior features. The face recognition method has the advantages that the principle is simple, the method is unique, the application is easy, and the like.

The present invention discloses a small current grounding fault line selection method based on a transient traveling wave. The method comprises a step of using a working frequency zero-sequence voltage signal to determine the grounding fault of a system, a step of selecting a fault phase for any outlet in a same bus, a step of calculating the polarity relationship between a transient traveling wave current signal and a transient traveling wave voltage signal for any outlet in the same bus, and a step of determining the outlets in the same bus is a failed line or not according to the polarity relationship. According to the method, through comparing the dyadic wavelet transform maximum value of each outlet three-phase transient traveling wave current, the largest phase of each outlet transient traveling wave current is selected, then a fault line is selected according to the polarity relationship between the transient traveling wave current and transient traveling wave voltage, the principle is simple, the range of application is wide, the method is not influenced by the factors of the magnitude of transition resistance, a neutral point grounding mode, and the existence of a branch line and has a high engineering practical value.

The invention discloses a variable working condition gear case bearing fault diagnosis method based on form component analysis, and relates to the technical field of a test method of a gear or a transmission mechanism. According to the method, resonance components correlated with gear vibration and impact components correlated with bearing fault information in gear case bearing fault signals can be sparsely represented by use of different dictionaries, and by use of the form component analysis and through combination with other signal processing methods, fault components with different form components in the signals can be effectively separated. The principle of the method is simple, the algorithm is easily realized, the physical meaning of the signals is clear, the method is an effective gear case bearing fault diagnosis method, and the method can also reduce the angle domain resampling order and reduces the computational complexity of order tracking.

The invention discloses a synchronous-sequence-based few-mode fiber mode-mode delay measurement system and method, and relates to the field of optical communication. The method comprises the following steps: at a transmitting end, generating a group of synchronous sequences, modulating the synchronous sequences to optical carriers, dividing the synchronous sequences into N-path single-mode optical signals, performing different delays on the N-path single-mode optical signals, coupling the delayed N-path single-mode optical signals to form one-path N-mode multiplexed optical signals, and inputting the one-path N-mode multiplexed optical signals into a to-be-measured few-mode fiber; at a receiving end, demultiplexing the received one-path N-mode multiplexed optical signals so as to obtain N-path single-mode optical signals, and recovering synchronous sequence information of the N-path single-mode optical signals; by a digital signal processing module, determining relative start time positions of the received N-path synchronous sequences, comparing the determined relative start time positions of the received N-path synchronous sequences with the relative start time positions of the N-path synchronous sequences at the transmitting end so as to obtain a relative delay between any two modes, and by combining with the length of the to-be-measured few-mode fiber, computing an mode-mode delay parameter of the to-be-measured few-mode fiber between the any two modes. The synchronous-sequence-based few-mode fiber mode-mode delay measurement system and method have remarkably reduced costs and are suitable for future large-scale applications under engineering conditions.

The invention relates to a sediment releasing method for a water intake of a low-head river channel pivotal power station and belongs to the field of water conservancy projects, under the IPC numbers of E02B9/00, E02B9/04 and E02B1/00. According to the method, a sediment trap is arranged along the whole front edge of the power station water intake, a gallery for sediment transport is arranged in front of the sediment trap and connected with a dam base sediment tunnel, the top of the gallery for sediment transport is provided with a horizontal joint sediment outlet, the width of the horizontal joint sediment outlet gradually increases from the upstream, the cross section of the gallery for sediment transport gradually increases from the upstream. The sediment trap is used with the variable width joint type gallery for sediment transport so as to achieve the function of an intercepting channel, an elongated scour funnel can be formed in front of the sediment trap, and the sediment releasing effect that sediment is released in front of the power station water intake is truly achieved.

The invention discloses a cold and heat source revolution type dual-prevention device for sewage or surface water and a system thereof and relates to a device for preventing blocking and scaling while extracting cold and heat in sewage or surface water by utilizing a heat pump technology and a system thereof, belonging to the technical field of energy and aiming to effectively solve the problem of heat exchange equipment blockage by impurities in the sewage or the surface water and on how to reduce the growth thickness of dirt in the heat exchange equipment. The device comprises a shell, a valve body, a scraper, a filter piece 1, a filter piece 2, a water inlet, a water outlet, two connecting ports, a rotating component, and the like. The system comprises a heat pump set, the device, a connecting pipeline, and the like. When one filter piece works, the other filter piece is used for back washing, the rotating component intermittently changes the direction of the valve body to ensure that the two filter pieces are used for alternately filtering and back washing, and filtered sewage or surface water enters the heat pump set or the heat exchange device again to carry out cold and heat exchange. The invention is suitable for a cold and heat source system of the sewage or the surface water.

The invention relates to environment-friendly antibacterial putty powder processing equipment. The equipment comprises a raw material storage device, a mixing and stirring device and spiral feeders obliquely arranged at the bottom of the raw material storage device and the top of the mixing and stirring device; a crushing, grinding and feeding device is arranged at the top of the mixing and stirring device; the mixing and stirring device comprises a bracket and an outer barrel, which is provided with an opening in the top and is fixedly arranged on the bracket; an inner barrel is rotatably arranged in the outer barrel, the crushing, grinding and feeding device is located at the top of the inner barrel, a driving device for driving the inner barrel to rotate is arranged outside the inner barrel, a stirring device is arranged in the inner barrel, the stirring speed of the stirring device is higher than the rotation speed of the inner barrel, a discharging pipe is arranged at the bottom of the inner barrel and penetrates out of the bottom of the outer barrel, and a discharging valve is arranged on the discharging pipe. The environment-friendly antibacterial putty powder processing equipment has the characteristics of scattering material cakes and mixing the materials more uniformly, can effectively shorten the material stirring time, and ensures the quality of the mixed putty powder.

The invention provides a solar-driven photo-thermal-salinity gradient power generation coupling synergistic interface evaporation system. The system comprises a light condensation film, a solar photo-thermal film, a salinity gradient power generation module and a collection and storage device, wherein the solar photo-thermal film is used for evaporating the seawater, so that the salt difference power generation module generates power by utilizing the concentration difference generated in the evaporation process and feeds back electric energy in situ to Joule to heat the solar photo-thermal film, and thereby the evaporation temperature of the solar photo-thermal film is increased, and the evaporation efficiency of the process is further improved; the storage device is used for collecting steam or condensate water generated by solar evaporation. Compared with the prior art, the solar photo-thermal conversion and utilization efficiency can be remarkably improved through the solar evaporation coupling salinity gradient power generation technology; the system is expected to be applied to the fields of sea water desalination, waste heat utilization, renewable energy power generation andthe like in a large scale.

The invention discloses a method for cloning a seamless gene without an artificial basic group, comprising the steps of: (1) designing and synthesizing a chimera primer according to sequences of a target gene and a target vector; (2) carrying out a single-step binary bridging coupling long-distance PCR (Polymerase Chain Reaction) to obtain a fusion linear fragment; (3) digesting PCR products and removing methylated template plasmid DNA (Deoxyribose Nucleic Acid) by utilizing DpnI (Diphosphopyridine nucleotide I); (4) transforming an escherichia coli strain DH5 alpha; (5) selecting monoclonal colonies for sequencing and identifying; and (6) confirming the integration situation of recombinant plasmids by utilizing enzyme digestion. By means of the method, special restriction enzyme and ligase as well as alkaline phosphatase are needless and any target gene can be merged into any position of any target vector. The method has the advantages of simple principle, simpleness and convenience in operation, accurate and controllable locus, high positive rate and wide application range.

The invention discloses a new process for preparing high purity aluminum oxide powder. The processed is carried out based on the fundamental principle of ultrasound electrochemistry, wherein electrode reactions in primary cells between metallic aluminium and air is formed under ultrasound action in a pure water system, and in-situ activation is carried out on the surface of the high purity metallic aluminium by the cavitation of an ultrasonic field, which can promote the activation of the surface of the metallic aluminium and the primary cell reaction between the metallic aluminium and the air as well as the hydrolysis reaction of the metallic aluminium. The method has simple principle, concise process, short technological procedures, low specific volume and energy consumption, environmental protection and no pollution. As under the entire ultrasound-electric field coupling condition, the reaction is moderate and controllable, and the obtained high purity Al (OH) 3 gel has small primary particle size, uniform particle size distribution, high activity, good flowability, particle appearance approximate to sphere and easy purity control. The obtained Al (OH) 3 gel is processed then by thermal treatment, and the high purity aluminum oxide powder with different forms can be obtained at different thermal treatment temperatures. The product has high purity, excellent particle characteristics and incomparable advantages over the products prepared by other production methods in the aspects of purity and particle shape.

The invention discloses a thermal processing method for improving aluminum alloy stamping forming. The method comprises the following steps of: before stamping forming, treating an aluminum section at the temperature of 230-330 DEG C for 1-20 minutes; transferring the aluminum section into water of 0-50 DEG C within 20 sections; cooling; and completing stamping forming within 8 hours. According to the method, the stamping forming of an aluminum alloy workpiece is improved, and the technical problems of high technical requirement, difficulty in controlling, high cost, high material improving cost and poor popularity are solved. In the method, a thermal treatment process is added before stamping forming, so that the forming performance of the aluminum alloy section is improved. The method disclosed by the invention has a simple principle, wide popularity and low energy consumption, and is easy to operate; the rejection rate of the aluminum alloy section during stamping forming can be effectively controlled, and the yield of the stamping forming of the aluminum alloy section is greatly increased.

The invention relates to a hydraulic feedback speed-controllable pipeline robot. The hydraulic feedback speed-controllable pipeline robot comprises a shell, leather cups, supporting wheels, a piston device, an adjusting valve, a fluid pump and a speed collection wheel. An opening is formed in the end face of one end of the shell. The piston device comprises a piston cylinder, a piston and a telescopic rod. One end of the telescopic rod is fixed to the side, not in an oil cavity, of the piston. The other end of the telescopic rod is provided with the adjusting valve with the opening degree of the opening capable of being adjusted. The oil cavity of the piston cylinder communicates with one end of a liquid inlet pipe. A liquid outlet of the fluid pump communicates with the other end of the liquid inlet pipe. The oil cavity of the piston cylinder further communicates with one end of a liquid return pipe. A liquid inlet of the fluid pump communicates with the other end of the liquid return pipe. The liquid return pipe is further provided with a throttling valve and a liquid storage container capable of balancing the pressure difference between the inside and the outside. The speed collecting wheel is installed on the tail of the shell through an elastic arm and is in transmission connection with the fluid pump. The hydraulic feedback speed-controllable pipeline robot has the advantages that a hydraulic feedback loop is adopted, energy of fluid in the pipeline is fully utilized, and the reliability of the speed-controllable pipeline robot is greatly improved.

The invention discloses a method of amending a phase position collecting error caused by frequency variation in phased rectifier control. The method of amending the phase position collecting error caused by frequency variation in phased rectifier control includes the following steps. Firstly, a synchronous transformer is used to achieve isolation of a power source. A network voltage signal is isolated by the synchronous transformer and waves of an obtained power source signal are filtered and undergo zero-cross detection and reforming. Higher harmonic and direct component are removed. Secondly, for a wave filtering circuit with fixed parameters and a fixed form, phase shift deviation and frequency of an input signal form a fixed function relationship, namely, a deviation value of phase shift can be fixedly determined based on the frequency of the input signal. Thirdly, according to the deviation value, a synchronous zero reference is amended so that an authentic zero-cross signal can be restored, namely, a synchronous square wave signal is obtained after calculation in a zero-cross amending method. The method of amending the phase position collecting error caused by frequency variation in phased rectifier control has the advantages of being simple in principle, simple and convenient to operate, wide in application range, capable of eliminating zero-cross errors caused by continuous frequency variation and the like.

The invention relates to a system and a method thereof for carrying out real-time online calculation on a titanium balance of a blast furnace, belonging to the technical field of metallurgical ironmaking. The system comprises a terminal acquisition calculating industrial personnel computer and a field data management operating computer communicated with the terminal acquisition calculating industrial personnel computer, and system software loaded on the management operating computer comprises a data acquisition module, a titanium balance calculation module and a titanium balance online detection module. Automatic online acquisition and balance acquisition of various data are carried out by using in-furnace material gravity, out-furnace material weight and titanium contents of various materials through the computer programming; data of titanium received quantity, titanium expanded quantity, received and expanded balance quantity, titanium load, titanium yield, and the like every day are continuously displayed on a user interface, and the titanium balance of the blast furnace can be calculated on line in real time. The invention is suitable for various blast furnaces, saves manual complicated number recording and calculating processes because the calculating accuracy of the computer program is high and the acquisition of various data are fully automatic, is flexible and convenient because parameters and results are stored in a form of database, and provides accurate basis for a blast furnace operator to hold the received and expanded condition of titanium in the blast furnace in real time.

The invention belongs to the technical field of electronic invoice printing equipment manufacturing, relates to equipment for converting an electronic invoice into a paper invoice, and in particular relates to a self-service electronic invoice printing device. Conversion of the electronic invoice to the paper invoice with real red stamps can be achieved through set word blocks and a mechanical arm together with an electronic invoice cloud platform in match. The main body structure of the self-service electronic invoice printing device comprises the electronic invoice cloud platform, a shell, a display touch screen, a printer, an invoice table, a motor, a sliding strip, a processor, a micro stepper motor, a word block mechanical arm, a stamp mechanical arm, an electromagnet, word blocks, digit blocks, word block holes, an inkpad plate, invoice paper, a code scanner, an ellipse stamp frame and an invoice outlet. Due to arrangement of the word blocks, the digit blocks and the ellipse stamp frame together with the mechanical arms, accurate pressing of the real red stamps can be achieved; due to arrangement of the touch display screen and the code scanner, rapid electronic invoice recognition and checking can be achieved; and the self-service electronic invoice printing device is simple in principle, reasonable in structure, high in printed invoice usability, accurate in real red stamp impression, and friendly in application environment.

The invention relates to a device and method used for detecting surface shape errors of a plate optical element. The device comprises an optical element support, matching liquid and a matching liquid containing tank. When a vertical interferometer is used for measuring the plate optical element, the device can eliminate interference caused by reflective light of a rear optical surface of the plate optical element on surface shape error detection of the front optical surface, so that reliable optical surface shape error distribution of the optical surface is detected. By means of the device and method, the problem that a common vertical interferometer can not detect the surface shape errors of the plate optical element can be effectively solved, the device and method are simple in principle, manufacturing and use cost is low, and detection of the surface shape errors of the plate optical element can be finished on the condition that an original vertical interferometer structure is not changed. The surface shape errors of the optical element are detected in a non-contact mode, the optical element is not damaged, clamping stress does not exist, the optical element can be cleaned with tap water during the detection process of the surface shape errors of the optical element, and special cleaning solvents and methods are not needed.

The invention provides a method for calculating power flow of power distribution networks. The method includes building node and branch information matrixes; carrying out current back-substitution updating and voltage push-forward updating on each node by the aid of progressive comparison processes; constructing error matrixes; comparing the error matrixes to convergence values to obtain power flow solution. The method has the advantages that parameters of the power distribution networks are known, and accordingly the node and branch information matrixes are easy to acquire; power of the various nodes does not need to be calculated in power flow calculation procedures on the basis of the progressive comparison processes, principles are simple as compared with Jacobian matrixes in Newton-Ralfson's methods, programming is easy to implement, the method is high in convergence speed and data accuracy, and precise power flow data can be provided for operation and maintenance staffs for the power distribution networks.

The invention discloses a temperature and strain correlation-based bridge damage identification method. The method comprises the steps of 1) performing abnormal value removal on bridge health monitoring data and extracting a strain component influenced by temperature; 2) fitting temperature and strain component data by using a linear regression model, and extracting a corresponding regression coefficient; 3) performing normal check and normal conversion operation on the regression coefficient, and then performing statistics on a mean value mu and a standard deviation sigma; and 4) preprocessing latest monitoring data, performing fitting by using the linear regression model to obtain a regression coefficient, and according to a 3 sigma criterion, judging whether a bridge is damaged or not.The method is simple and efficient in principle, and does not involve excessively complex algorithms; a large amount of data (the required data directly comes from an existing bridge health monitoringsystem, additional equipment such as a sensor and the like does not need to be added, and the bridge operation cost is reduced) collected by the monitoring system can be effectively utilized; and thecontinuously accumulated monitoring data can further improve the effect of the method.

The invention discloses a compression method of a historical database. The compression method is characterized by comprising the following steps that 1, a line database is converted into a column-oriented database, and sharding and assembling are conducted; 2, piecewise linear fitting lossy compression is conducted; 3, data file sorting is conducted; 4, data file lossless compression is conducted, index sorting is conducted, and a complete two-stage compressed column-oriented database is formed. According to the characteristic of an existing database, compression is conducted by two stages, a piecewise linear fitting lossy compression mode is adopted firstly, a digital dictionary lossless compression mode is adopted later, data is compressed, the occupied space is saved, the requirement of a modern comprehensive monitoring system on longer time duration of saved historical data is met, and the error is kept within a certain error precision range.

The invention discloses a high-temperature bending test deflection measuring device and a measuring method. An environment box is internally provided with a three-point or four-point bending fixture,and the deflection of a tested sample is transmitted to a displacement sensor outside the environmental box by a measuring extension rod and a Z-shaped frame. The bending fixture includes a first pressure bar assembly and a second pressure bar assembly movable relative to the first pressure bar assembly, the axes of the first pressure bar assembly and the second pressure bar assembly are coincident; the end of the first pressure bar assembly is provided with a first pressure roller and a second pressure roller for supporting test ends of the sample; the second pressure bar assembly is providedwith an upper pressure roller for applying pressure to the sample. The high-temperature bending test deflection measuring device is free from dependence on an optical measuring system, and avoids direct contact with a high temperature component when the displacement sensor is used, thereby effectively ensuring the accuracy and reliability of the high temperature bending test deflection measurement.

The invention discloses a soil restorationdevice for removing organochlorine pesticide ingredients in farmland soil.The system comprises an original soil hopper, a blasting and screening machine, a vibrating screen classifier, a magnetic screening machine, a grinding and crushing machine, a thermal desorption-plasma pyrolysis reactor, a waste heat exchanger, a washing and purifying tower, an induced draft fan, an adjustable spray tower, a waste heat drier and a repaired an oil storage cabin.According to the soil repairing device, the characteristic that organochlorine pesticide ingredients absorbed by soil can be detached and desorbed after being heated is creatively utilized, the organochlorine pesticide ingredients are volatilized into air in the form of vapor, then the vapor is introduced into high temperature plasma flame, the catalytic cracking effect special for the high temperature plasma flame is utilized, and organochlorine pesticide molecular bonds are broken and split into small molecular substances and can be discharged after being purified; meanwhile soil obtained after thermal desorption-plasma pyrolysis purification treatment can be applied to agricultural production repeatedly.

The invention discloses a laser beam combining apparatus. The laser beam combining apparatus comprises a laser array, turning optical elements, a conversion lens, a dispersion element and an external cavity mirror, wherein the laser array comprises M rows of lasers, and each row of lasers comprise N lasers; M*N beams of laser output by the laser array, after passing through the turning optical elements, are emitted in parallel, N beams of laser corresponding to each row of lasers form a coplanar laser array, and planes where M laser arrays are disposed are parallel, and adjacent intervals are specific distances; the N beams of laser in each laser array, after being converged by the conversion lens, are respectively incident to the dispersion element through different angles; and the N beams of laser in each laser array, after passing through the dispersion element, are combined to form one beam of output light, and the M beams of output light corresponding to the M laser arrays, after passing through the external cavity mirror, are output in parallel. According to the invention, since a turning structure is employed, multiple beams of laser output by the laser array are closely arranged, and while the heat dissipation performance of the laser array is improved, higher-efficiency laser beam combination is realized.

The invention discloses a trolley for detecting surface evenness. The trolley for detecting the surface evenness comprises a flat car. One end of the flat car is fixedly connected with a hanging hook.Two ends of the flat car are fixedly connected with two support bases and an iron sheet. Each support base is hinged with a telescopic cylinder. The opposite faces of a pair of the telescopic cylinders are fixedly connected with magnets. Each magnet corresponds to the iron sheet. A support rod is moveably inserted in a pair of the magnets. A telescopic rod is moveably inserted in the telescopic cylinder. One side, away from the magnet, of the telescopic cylinder is fixedly connected with a sleeve. An inserting rod is moveably inserted in the sleeve. One end, away from the sleeve, of the inserting rod passes through the telescopic cylinder and is extended into the telescopic rod. The telescopic rod is provided with multiple inserting holes corresponding to the inserting rods. The trolley for detecting the surface evenness is rational in structure, the flat car is used as a carrier, and multiple adjustable measuring cylinders are installed. In addition, the detection area is adjustable,the telescopic cylinders are foldable, the practicability is strong, and the popularization is easy.

The invention provides a vibration characteristic testing and analyzing device of a micro-interference moment simulation system. The vibration characteristic testing and analyzing device of the micro-interference moment simulation system comprises an instrument platform switching installation plate, a six-component measuring system, a movable part and a switching installation system thereof, a three-dimensional vibration measuring system, a data collection and control system, and a data processing upper computer system. The data collection and control system is installed on an air floatation instrument platform. The movable part and the switching installation system thereof fix a device or a single machine to be tested on the six-component measuring system. The six-component measuring system collects the force/moment output of the tested member to the platform, and the three-dimensional vibration measuring system measure the vibration and the transmission relation of the vibration of the movable part. The data collection and control system monitors the operation of the movable part and collects data, carries out real-time or off-line analysis and display on collected signals, stores the data as files and uploads the files to the data processing upper computer system in a wireless communication manner. The vibration characteristic testing and analyzing device of the micro-interference moment simulation system is simple in principle, high in inherent frequency and convenient to realize on engineering.

The invention relates to an ultrasonic monitoring method for concentration of paste filling slurry conveyed in a pipeline. A system comprises a probe control system, a data transmission system, a data receiving system and a data acquisition system. An acoustic emitter 4 and an acoustic receiver 8 are arranged at two corresponding test points on two sides of a transportation pipeline 6 through retaining rings 5 and screwed and fixed with a bolt 9. Acoustic test data are transmitted to an ultrasonic tester 2 through an acoustic test line 3 and transmitted to a digital display 1 through an acoustic data line 10, and the concentration of the paste filling slurry in the pipeline is displayed on a screen of the digital display 1. The ultrasonic monitoring method has the advantages that a non-destructive testing technology is adopted, the operation is simple, convenient, safe and rapid, the concentration of the paste filling slurry in the pipeline can be monitored in real time, and the defect that the concentration of the paste filling slurry in the pipeline is deduced directly according to slurry preparation concentration while the influence of environment temperature on the concentration of the paste filling slurry in a transportation process in the mine pipeline is neglected in the traditional monitoring method is overcome.

The invention relates to the field of dedusting equipment, in particular to a tiny dust particle filtration and adsorption system. The tiny dust particle filtration and adsorption system comprises an atomizing device, a circulating cooling device, an absorption device and a recooling device, wherein the atomizing device comprises an air inlet pipe, a cooling pipe, an air outlet pipe, a steam generator and an air pump, wherein the air inlet of the cooling pipe is connected with the air outlet of the air inlet pipe; the air outlet of the cooling pipe is connected with the air inlet of the air outlet pipe; the middle of the air inlet pipe penetrates through one hole of the '8'-shaped spiral cooling pipe; the output opening of the steam generator is communicated with the air inlet pipe; the steam generator is used for generating steam to be mixed with gas to be purified; the circulating cooling device is connected with the cooling pipe; the recooling device is connected with the absorption device. The tiny dust particle filtration and adsorption system imitates mist formation in meteorology, tiny dust particles serve as condensation nucleuses to form water mist first, and then the water mist is condensed into water, so that the dust particles and the water are combined and discharged. The system is simple in principle, obvious in dust removal effect, recyclable, lower in cost, and convenient to popularize.

The invention discloses a method for measuring three-dimensional coordinate by combination of laser and monocular vision in a wide-angle scene, comprising the following steps: establishing a camera coordinate system by shooting the angular point of a top left corner shot with a CCD monocular camera as an origin of an image coordinate system; placing a total station on an OB point, establishing a world coordinate system, and determining the rotation matrix and the translation matrix between the camera coordinate system and the world coordinate system; moving the total station to an OC point, and establishing a geodetic coordinate system; reading out a multi-point three-dimensional coordinate under such coordinate system, and solving a relation between the world coordinate system and the geodetic coordinate system in two positions of forward and backward movement of the total station by utilizing a seven parameter module; and reading out the image coordinate in the camera, so as to determine a three-dimensional coordinate of any relative position by using the transformational relation among the camera coordinate system, the world coordinate system and the geodetic coordinate system.According to the method, complicated steps in binocular camera calibration can be simplified and avoided, the multi-point calibration of external parameters can be implemented by only using the monocular camera and the total station, and the method belongs to the field of monocular vision and machine vision.