457results about How to "Solve matching problems" patented technology

The invention discloses an inter-city road network index and a matching method. The invention belongs to the field of intelligent transportation. The method comprises the steps that: an inter-city road network is partitioned; a large-grid index of the partitioned inter-city road network is established, such that road section sets contained in the large-grids of the regions after partitioning can be acquired; GPS information is received from a GPS receiving system; the grid in which the GPS information exists is positioned, and a candidate matching set of road sections is acquired; an exclusion positioning method is operated in the grid; and the candidate matching set obtained after exclusion is subjected to map matching with the GPS information, such that a matching road section is found. According to the invention, the inter-city road network is partitioned, the large-grid index is established, and an algorithm is operated in the large-grid, such that inter-city road network index and matching problems are solved with high efficiency.

The invention relates to a method and device for matching users in a game application. The method comprises the following steps that the historical primary attribute values of the users are acquired according to the historical game data of the users; the evaluating coefficients of current game running environment parameters of the users are acquired; processing is carried out according to the historical primary attribute values of the users and the evaluating coefficients of the current game running environment parameters, and the current primary attribute values of the users are obtained; the users with the current priamry attribute values meeting set conditions are matched as a group. According to the method and device for matching the users, the current game running environment parameters of the users are estimated, processing is carried out according to the evaluating coefficients of the environment parameters and the historical primary attribute values of the users, the current primary attribute values of the users are obtained, the users meeting the set conditions are matched, obtained matching is more accurate and reasonable, matching accuracy and matching efficiency are improved, the situation that a large number of users not meeting the set conditions are matched is avoided, and network resources are saved.

The invention discloses a comprehensive foot profile three-dimensional individualized shoe tree model generation method for adjusting global parameter and local cross section. The method is taken in the following steps: 1, a three-dimensional standard shoe tree model and a user foot profile model are read in; 2, the foot profile parameter of the read-in foot profile model in the step 1 is measured and the shoe tree model parameter is calculated according to the foot profile parameter, then the shoe tree model is deformed under the drive of the shoe tree model parameter; 3, position control points are respectively defined for the foot profile model and the shoe tree model formed in the step 2; 4, the foot profile model is aligned with the shoe tree model in accordance with a match position reference point; 5, the section of the key position of the foot profile model is defined; 6, the section got in the step 5 and deform the shoe tree model is analyzed on the basis of the section; 7, the three-dimensional shoe tree model designed well is output. Based on the thought of stepwise refinement, the invention generates the individualized shoe tree model with high matching level according to the foot profile of the user and changes the actuality of rough classification and less comfort in the traditional shoe tree generation method.

The portable non-destructive plant nitrogen and water content detection system includes four wavelength spectral measurement device with oppositely set light source and detector, neutralized reference sample or leaf to be measured, micro controller connected to the light source and the detector, serial port circuit connected electrically to the micro controller, and display and keyboard connected electrically to the micro controller too. The detection method includes detecting data I0 and I, calculating the fresh leaf transmission T= I / I0 of different wavelengths, and calculating the plant chlorophyll, water content and relative content NI reflecting the nitrogen level in the leaf in chemical metering algorithm. Compared with traditional measurement method, the present invention has decades times raised efficiency and no production of environment harming matter, and may be used in great area fast field measurement.

The invention provides a navigation positioning correction method and a navigation positioning correction device based on a global positioning system, and a positioning navigation system. The method comprises the following steps of: receiving a current positioning point acquired by the global positioning system; selecting a road with the highest weight factor as a matching road of the current positioning point, and determining that a parameter of the weight factor comprises an accordance degree of a current travelling direction and a direction of the road, and an approaching degree of the current positioning point and the road; and taking a projection point of the current positioning point to the matching road as a map matching point of the current positioning point. By the invention, an accurate matching point on a map is obtained by calculating the accordance degree of the current travelling direction and the direction of the road, and the approaching degree with each road, and projecting to the road with the highest matching degree. Compared with the conventional method for matching based on a distance only, the invention has higher precision and adaptability, and can solve thepositioning problem under complex situations, such as vehicle turning, multi-intersection selecting, main and auxiliary road selecting and the like.

The invention discloses a video target tracking method capable of integrating ASIFT features and particle filter, and belongs to the technical field of video information processing and mode recognition. The video target tracking method comprises the following steps: the adjacent frame difference method is utilized to obtain moving objects in a video sequence; according to the area corresponding to an acquired complete target, a tracking target model is established; ASIFT feature vectors of the target model are established; the particle filter technology is adopted to predict a candidate area target; ASIFT feature vectors of a candidate target model are established; the feature vectors of the tracking targets are matched with the feature vectors of the candidate target; the RANSAC algorithm is adopted to reject wrong matching; the target model is renewed, so as to realize target tracking. The video target tracking method provided by the invention can accurately and quickly track the targets under the condition that brightness changes and is shielded. Therefore, the multi-target tracking method in the video surveillance has relatively good real-time performance and robustness.

The invention provides a predictive method of milling machining surface form which comprises the following steps: step one, arranging cutting parameter data and acquiring a surface roughness measured value; step two, resolving a surface roughness predictive value; step three, combining the surface roughness measured value with the surface roughness predictive value to a module data group and outputting an ultimate predictive module. Compared with the prior art, the predictive method of the milling machining surface form provides a novel surface form predictive method and further resolves the problem of match between the cutting parameter and the machining surface form based on a multiple linear regression thought. The predictive method of the milling machining surface form analyzes mainly from the angle of the features of a predictive system of the milling machining surface form, establishes a multiple linear regression analysis predictive module specific to different machining experiments, and utilizes the module to predict the experiments, and can be popularized to the prediction of residual stress, surface hardness and cutting force and the like in the milling process.

The invention provides a vehicle running track reconstruction method based on multiple probability matching under sparse sampling, which is characterized in that a historical data statistics sparse sampling point tolerance distribution is used, and a search area is determined; then a candidate match object (road section or intersection) is searched in a region of search, and can be divided into various types according to the characteristics of the candidate object, if no match object is in the search area, the sampling point is not considerate, if only one object is in the search area, then the sampling point couples to the only object, if various candidate objects is in the search area, a double layer probability matching model is used for further processing; the double layer probability matching model can calculate the coupling probability of each possible track according to matching probability of the sampling point and the selection probability of the reasonable path, and the track with utmost possible probability can be selected for being taken as a reconstruction track of the sparse sampling point. The vehicle running track reconstruction method can reduce the matching error of the sparse sampling data, and can effectively increase the precision and speed of reconstructed vehicle running track in a complex road net.

The invention discloses three-directional dynamic performance test equipment for a vehicle suspension leaf spring, and the application thereof. The test equipment comprises a power source, a test bed and a software control system. The test bed comprises a base, four stand columns and a fixing plate. A steel plate spring suspension is inverted, coiled lugs at the two ends thereof are fixed on a plate spring bearer 1 and a plate spring bearer 2. The bottoms of the plate spring bearer 1 and the plate spring bearer 2 are matched with sliding rails on the base and fixed on the sliding rails through a guide rail locking device. An inverted simulated vehicle axle is fixed above the middle part of the steel plate spring suspension. The side surface of the steel plate spring suspension is horizontally provided with a longitudinal loading mechanism. The side surface of the simulated vehicle axle is horizontally provided with a transverse loading mechanism, and a vertical loading mechanism connected with the fixing plate is arranged above the simulated vehicle axle. The power source provides power, and controls the longitudinal loading mechanism, the transverse loading mechanism and the vertical loading mechanism to conduct the three-direction synchronous loading operation onto the steel plate spring suspension by adopting the static step-by-step loading method and the dynamic harmonic excitation method through the software control system.

The invention relates to a hierarchical FPGA layout and wiring method based on a multi-level method and empowerment hypergraph. A mathematical model of a logical netlist in a hierarchical FPGA layout and wiring process is constructed by using empowerment hypergraph; circuit logic units are represented as nodes in the empowerment hypergraph; wiring among the circuit units is expressed as overrides in the empowerment hypergraph. The multi-level method is adopted as a hierarchical FPGA layout and wiring method to effectively meet the higher requirements of VLSI on the operating efficiency and processing capacity. The method can gradually reduce the scale of problems and the time complexity of methods by bottom up cluster stage and also can process details of problems level by level, increasing solution accuracy of methods by means of top-down projection optimization so as to be naturally combined with hierarchical features of researched objects. By means of the hierarchical FPGA layout and wiring method based on the multi-level method and empowerment hypergraph, the time complexity of FPGA physical design can be effectively reduced and the design capability and performance of FPGA are increased.

The invention relates to a well-constrained pre-stack elastic parameter inversing method for modulating supplemented subspace, belonging to the field of seismic log. The method provided by the invention has the advantages that: the computation time is shortened so that the running time is shortened and the cost is reduced; the processing parameters can be adjusted so that a better processing result can be obtained; the frequency-increasing data wave group detailed information is not abundant so that the wave group characteristics of original seismic events and the interlaminar information of original profiles are maintained and the resolution of the profiles is enhanced; the undue dependence on a stratified model is avoided to ensure that the information of combined reconstruction beside the well is preferably fitted with the log information, and the non-stratified information contained in seismic data can be fully reflected outside the well; therefore, the problem of matching the seismic data of reservoir stratums (stratums such as fluvial facies reservoir stratum, carbonatite pore and fissure and hole intensive belt and the like ) with reticular characteristics with the well information is solved.

The invention discloses a driving assistance system and method based on augmented reality display technology. The solution recognizes the target vehicle in real time and its relationship with the vehicle itself, and at the same time forms a driving assistance correction based on the driver's perspective image based on the driver's perspective image. information, and then render and form a corrected driving assistance image based on this, and display the corrected driving assistance image in the driver's perspective through an augmented reality display system. Based on this, the driving assistance scheme is based on the real-time correction of auxiliary information based on the driver's perspective, and the auxiliary information is associated with the real driving environment through the head-up display technology, which effectively solves the problems existing in the information prompt of the existing driving assistance system.

The invention discloses a safety cut-off type remotely-controlled intelligent mass flow rate gas meter and a management system thereof, and belongs to a gas metering device. The gas meter comprises a microcomputer controller, a micro-electro-mechanical system metering unit, a valve control circuit, a gas working condition collecting and processing unit and a communication module. The micro-electro-mechanical system metering unit accesses to the microcomputer controller through a signal collection unit and a signal processing unit sequentially. The microcomputer controller is connected with a cut-off valve through the valve control circuit and is also connected with the communication module. The safety cut-off type remotely-controlled intelligent mass flow rate gas meter and the management system thereof have the advantages that a mass flow rate metering principle is adopted, and mechanical transmission components are omitted, so that metering problems caused by mechanical aging are avoided, and metering accuracy is guaranteed; a temperature correction function is achieved through mass flow rate metering, a correction device does not need to be arranged externally to compensate temperature and pressure, and the whole meter is small in size, high in metering accuracy and high in reliability.

The invention provides a space-time proximity search-based mobile trace sequence mode quick mining method. The method comprises the following steps of based on data preprocessing of spatial transformation, at first, performing time and space division on the primary mobile trace data, obtaining a corresponding time space sequence on the basis that the mobile trace data is matched with a time space, building a directed un-weighted digraph corresponding to a two-dimensional geometric space in a time space space, and obtaining a corresponding time space sequence set on the basis that a top point of the un-weighted digraph is matched with the time space sequence; mining a mobile trace sequence mode on the basis of depth-first traversal, in a depth-first traversal process, performing mode increasing in a space-time proximity search-based way, and calculating mobile trace sequence mode support degree by using relational operation of the time space sequence set of the top point. Compared with the prior art, the method has the advantages of high mining speed and high efficiency.

The invention discloses a plug and socket adapter, which is provided with a plug part used as power input and a socket part used as power output. The plug part is provided with four movable plugs of different standards, which are distributed in the adapter in the cross direction; each plug is provided with an upper fixed position and a lower fixed position; when the conductive inserted pins of the plugs move out of the adapter to enter an input state, conducting strips on the plugs and a connection conductor are in reliable contact with the conductive inserted pins by larger elastic force, so as to realize electrical connection; and when the conductive inserted pins do not move out of the adapter, the conducting strips of the plugs and the connection conductor are in a separation state of no electrical connection. The plugs are mutually restricted to move through two sliding rods at the inner part thereof, so as to ensure that more than one plug cannot move to extend simultaneously; an output jack of the adapter can be inserted into the plugs of different standards, so as to realize switch connection between the electric appliance plug of different standards and power sockets, thereby solving the matching problem of the electric appliance plug of different standards and the power sockets.

The invention relates to a time-frequency analysis method based on an improved matching pursuit algorithm. The time-frequency analysis method comprises the steps of constructing a complex analysis signal of a seismic signal, and determining instantaneous phases and optimal master frequencies at the arrival time and the delayed time; calculating the master frequency and the phase of a time delay position, and determining an atom form according to the master frequency and the phase which are used as Ricker wavelet parameters; calculating an instantaneous amplitude of a wavelet under a wavelet energy normalization condition; matching an atomic amplitude according to a given percentage, and subtracting a matching wavelet which is in maximum correlation with the seismic signal from a seismic channel after four key parameters such as the atom arrival time, the atom master frequency, the atom phase and the atom amplitude are determined to obtain a residual signal, and carrying out recursion iteration on the residual signal within a certain threshold range to finish decomposition of original signal; stacking the time frequencies of all the matching wavelets to obtain a time frequency spectrum of the seismic signal. According to the time-frequency analysis method, the accuracy of atom master frequency matching is guaranteed under the condition that the calculation frequency of matching pursuit time frequency analysis is improved, so that the problem of discontinuity of an inphase axis on the section of a seismic frequency division body is solved.

The invention relates to a firewall technique, and particularly discloses a method for service matching of messages by means of an access control list (ACL). The method includes that a firewall classifies all IP addresses of the messages, the IP addresses of N types are obtained, the ACL is respectively distributed for the IP addresses of N types, N ACLs are obtained, and the N ACLs respectively record service types which need to be executed by the messages corresponding to the IP address of each type. When receiving the messages, the firewall finds the corresponding ACL in the N ACLs for matching according to the IP addresses of the messages, and therefore the service types which need to be executed by the messages are obtained. The firewall sends the messages to a corresponding service processing module for processing according to the service types which need to be executed by the messages. By means of the technical scheme, when the firewall processes the messages, the ACL needs to be matched only once, and therefore people can know what services the messages need to carry out. By means of the method, the speed of processing the messages is greatly increased.

The invention discloses a high-transmissivity conductive glass for a touch screen and a process for producing the same. The high-transmissivity conductive glass for the touch screen comprises a glass substrate; the surface of the glass substrate is sequentially provided with a silicon dioxide film plating layer and a tin indium oxide film plating layer; the silicon dioxide film plating layer is positioned in an inner layer; the tin indium oxide film plating layer is positioned in an outer layer; a niobium pentoxide film plating layer is arranged between the glass substrate and the silicon dioxide film plating layer; a process flow comprises that: the qualified glass substrate is selected and cleaned; the cleaned glass substrate is sent into a film plating machine; the surface of the glass substrate is subjected to film plating processing; a finished product plated with a film is taken out from the film plating machine; the finished product is subjected to performance detection; and the qualified finished product is packaged and enters a warehouse. The high-transmissivity conductive glass utilizes good insulation and stable refractive index of columbium pentoxide and silicon dioxide and can improve the visible light transmittance of the conductive glass to 94 percent above; and a reasonable process course is favorable for improving controllability of operation and stability of product quality and can meet requirement of large-batch production.

Aiming at defects of an existing measuring technology, the invention provides a no-parking vehicle weight information collection and matching system and method. The system comprises a lane vehicle weight information monitoring module, a tyre identification module, an ultrasonic monitoring module and an information processing module. The method comprises ten steps. The no-parking vehicle weight information collection and matching system and method has the advantages that the hardware environment aiming at multiple lanes is provided, all modules are combined and configured reasonably, and the problems in the prior art that a vehicle needs to be led to an individual lane, the construction amount is large, and the traffic flow speed is low are overcome.

The invention discloses a pedestrian re-identification method. The method comprises steps of pedestrian characteristic extraction and pedestrian characteristic tolerance, for pedestrian characteristic extraction, image color histograms are extracted through employing sliding windows, main colors are expanded, statistics of appearance frequency of each color mode is carried out at each sliding window, sum of relatively larger frequencies is taken as characteristic output of the color, traversal of an integral image is carried out through the sliding windows, and characteristics are formed after normalization; for more generalization matching, a search source is extracted from characteristics of a full body to a half body; for tolerance calculation, characteristic dimensions with a non-zero search image characteristic vector and to-be-searched-target characteristics are taken as an Euclidean distance, and interference of background factors under a complex scene is further reduced. The method is advantaged in that re-identification under the complex scene is carried out, properties of strong transportability for scene change, stable algorithm and fast speed are realized, a problem of poor quality of monitoring videos and to-be-searched databases can be effectively solved, and strong practicality is realized.

The embodiment of the invention relates to the technical field of face tracking, and discloses a face tracking method, device and terminal. The face tracking method comprises the following steps of: acquiring one or more human face images including faces in a first video frame image in a video frame image sequence; identifying a face image to be tracked including a face to be tracked in the face image; extracting an image region to be detected including a human face from a subsequent video frame image of the video frame image sequence; calculating a similarity between the image region to be detected and the face image to be tracked; when there is an image region to be detected whose similarity is greater than a preset threshold value, marking the image to be detected visually in a video frame image. By the above mode, the embodiment of the invention can reduce the calculation amount of face tracking, thereby improving the efficiency.

The invention discloses a humanoid robot foot plate mechanism with multiple degrees of freedom, which belongs to the technical field of robots and comprises a central fixing plate and four foot plates. Two connecting plates are respectively hinged on each of the front side and the rear side of the central fixing plate, and each connecting plate is correspondingly connected with one of the foot plates, so that the four foot plates are respectively positioned on the left front side, the right front side, the left rear side and the left rear side of the central fixing plate. A torsion spring is mounted on a rotating shaft of each hinge. When the various foot plates in the foot plate mechanism contact with an uneven ground, a certain angle is formed between each foot plate and the corresponding connecting plate according to curvature of the ground surface contacting with the foot plate due to the effect of the corresponding torsion spring, and accordingly, a spatial supporting surface with at least four contact points is formed by the foot plate and the ground; and when the foot plates leave away from the ground, initial states of the foot plats are restored under the effects of the torsion spring. The humanoid robot foot plate mechanism is simple in structure, the foot plates can adaptively fit with an optional rough ground without being driven, the problem of matching the foot plates with the uneven ground is solved, and the characteristic and a function of automatically adapting to concave and convex changing ground surfaces and shapes are realized.

The invention relates to a solar photovoltaic heat pump system, which comprises a solar photovoltaic electricity generation system, a recycle cooling system and a heat pump hot water system. A waterside inlet of an evaporator is connected with an inlet branch of a condenser through a branch, a fourth temperature control valve is arranged in the middle part, a cooler is pasted on the back of a photovoltaic component, an outlet of the cooler is respectively connected with a hot water storage tank and a constant-temperature water tank through a second temperature control valve and a first temperature control valve, a left side branch in the lower part of the hot water storage tank is connected with the cooler through a first recycle water pump, a right side branch in the upper part of the hot water storage tank is connected with the waterside inlet of the evaporator through a second recycle water pump and a third temperature control valve, an outlet of the evaporator is connected with the lower right side of the hot water storage tank through a pipe, the waterside inlet of the evaporator is connected with a third recycle water pump and the constant water tank in series through the pipe, a refrigeration loop of the evaporator is connected with a regenerator and is connected with an air entry and an exhaust outlet of a compressor through a liquid storage tank, and the inlet and the outlet of the condenser is connected with the evaporator entry through the regenerator and the electronic expansion valve.

In view of a defect in the conventional measurement technology, the invention provides a system and method for acquiring and matching the weights of nonstop vehicles in multiple lanes. The system comprises a lane vehicle weight information monitoring module, a tire identification module, a supersonic monitoring module, and an information processing module. The method comprises ten steps. The system and the method have technical effects of providing a hardware environment for multiple lanes and solving a problem that vehicles are required to be guided to an independent lane in the prior art and thus causes large construction load and slow vehicle speed by reasonably combining and configuring various modules.

The invention discloses a multi-channel T / R assembly testing device and method. The multi-channel T / R assembly testing device comprises a received-transmitted signal separation network, and is characterized in that the received-transmitted signal separation network comprises at least one combiner, each shunting end of the combiner is connected with a transmission output / reception input end of a multi-channel T / R assembly through a four-port network, and transmission input / reception output ends of the multi-channel T / R assembly are connected with a T / R assembly performance testing instrument through an instrument distribution network; combining ends of the combiners are also connected with the T / R assembly performance testing instrument through the instrument distribution network; the instrument distribution network is further connected with a signal source, and the signal source is used for providing input signals for the multi-channel T / R assembly; both the received-transmitted signal separation network and the instrument distribution network are connected with a controller; and the four-port network comprises two operating states, wherein one of the operating states is to form two vertical microwave channels, and the other operating state is to form two transverse microwave channels.

The invention relates to a structure and a method for hanging and installing a bottom suspension device of a high speed motor train unit. The bottom suspension device is hung on a crossbeam of a train body undercarriage, the crossbeam of the train body undercarriage is provided with an installation part, the bottom suspension device is correspondently provided with an installation seat, the installation part is provided with a suspension hole, the installation seat is provided with an installation hole, a suspension bolt sequentially penetrates through the suspension hole in the crossbeam of the train body undercarriage and the installation hole in the bottom suspension device from top to bottom, a gasket and a shock absorber are sequentially arranged in the installation holes in a penetrating manner, the gasket and the shock absorber are sleeved on the suspension bolt, the shock absorber is fixedly connected with the installation seat, a protection supporting plate is also sleeved on the bottom of the shock absorber, and the bottom of the protection supporting plate is fixed in a locking manner through a tightening nut. By adopting the structure and the method, under the situation that the original light-weight train body structure is not changed, the installation of the bottom suspension device can be modified, the modification cost is low, the period is short, and the structure and the method are suitable for modifying the train from a multi-point rigid connection to the resilient structure.

The invention discloses a networked intelligent warehouse status detection control system, and the system comprises a network information layer, an on-site management layer, and an on-site control layer, which are divided into three standard industrial networks from the top to the bottom. The information layer comprises at least one remote computer. The on-site management layer comprises at least one on-site management and control computer and at least one on-site measurement and control host. The on-site control layer comprises at least one measurement and control extension set and terminal equipment or an instrument in communication with the measurement and control extension set. The remote computer is in communication connection with the on-site management and control computer through a network based on a TCP / IP network protocol. The on-site management and control computer is in wired or wireless communication connection with the measurement and control extension set through a USB or a WIFI or a network interface. The measurement and control extension set is in bus data connection or communication connection with the terminal equipment or instrument. The network architecture tends to flatness and standardization, thereby improving the system reliability.

The invention relates to a heat pipe photovoltaic hot water composite system combined with a thermoelectric plate. The system comprises a whole-plate photovoltaic hot water module, a semiconductor double-layer heat exchange header, a photovoltaic and electric power control system and a water tank. The double-layer heat exchange header comprises two layers, i.e., a direct heat exchange layer and asemiconductor heating layer. On a clear day, circulating water flows through the direct heat exchange layer and the semiconductor heating layer, hot water is produced, the temperature of a photovoltaic cell is reduced and the photoelectric conversion efficiency is increased. On a somber day, the circulating water only flows through the semiconductor heating layer; the thermoelectric plate works; the water temperature is obviously raised by the heat pump effect of the thermoelectric plate; compared with the output of the hot water of a common PV (photovoltaic) / T (temperature) system, the output of the hot water is greatly increased; the temperature of the photovoltaic cell is lower and the photoelectric conversion efficiency is higher. The invention has the characteristic that the heat pipe photovoltaic hot water composite system can be miniaturized. The relationship between electric power and the output of the hot water can be regulated according to the weather and the requirement. The utilizing efficiency and the quality of solar energy are improved. Meanwhile, the dependence on an external power supply is reduced and the application range of the system is enlarged.

A laser sputtering ionization cold focusing orthogonal time-of-flight mass spectrometer relates to a mass spectrometer. Provided is a laser sputtering ionization cold-focus orthogonal time-of-flight mass spectrometer that matches a laser ionization source with a mass spectrometer, removes interference peaks, provides clear spectrograms, and analyzes solid samples without a standard sample. A laser, a focusing lens group, a sampling probe rod, a two-dimensional mobile platform, an ion source cavity, a main cavity, a sampling cone, a radio frequency multipole rod, a skimmer cone, an ion lens group and a time-of-flight mass analyzer are provided. The laser and focusing lens are set outside the ion source cavity, and the sample injection probe, two-dimensional mobile platform and sampling cone are set inside the ion source cavity; the wall of the ion source cavity is equipped with quartz windows, vacuum ports and valves; the main cavity A vacuum port is set on the wall of the body cavity, and the skimmer, radio frequency multi-stage rod and ion lens group are arranged in the main cavity; the sampling probe rod, two-dimensional mobile platform and sampling cone are the same as the skimmer cone, radio frequency multi-stage rod and ion lens group. axis.

The invention provides a preparation method for flame-retardant and weather-resistant modified ABS resin. The modified ABS resin comprises the following materials in part by weight: 50 to 80 parts of ABS resin, 20 to 50 parts of ASA resin, 10 to 25 parts of brominated flame retardant, 2 to 5 parts of auxiliary flame retardant, 0.1 to 0.8 part of antioxidant, 0.1 to 0.5 part of lubricant, 0.1 to 0.5 part of ultraviolet light absorber, 0.1 to 0.5 part of light stabilizer and 2 to 10 parts of compatible toughening toughening agent. After all the materials are weighed in a proportion, adding the materials to a blender, evenly blending the materials, and then extruding the materials to obtain a finished product by utilizing an extruder. The modified ABS resin prepared by the method has the advantages that the mechanical property and the processing property are consistent with those of the ABS resin, and the flame-retardant and weather-resistant properties of the resin are improved.