548results about How to "Optimize location" patented technology

The invention provides an energy-saving navigation method and system for a combined fleet under intelligent control, and relates to the technical field of data processing, and the method comprises the steps: collecting environment data and ship state data of fleet navigation in real time, carrying out the preprocessing, removing redundant data, obtaining a navigation data set, and obtaining a navigation data set according to the navigation data set; calculating a channel influence value, a sea condition influence value and a wake flow influence value, determining a resistance influence value of each ship according to the values, calculating the required power of each ship, obtaining a required power data set, calculating the compensation power of each ship, analyzing the limitation of the channel on the compensation power of the ships, balancing the distribution of the compensation power among the ships, and obtaining an energy-saving scheme. And the compensation power of each ship is adjusted in real time, the navigation efficiency of the fleet is monitored, execution data are obtained, whether the navigation efficiency reaches preset efficiency or not is analyzed, the resistance influence value of each ship is updated, and a power distribution scheme is adjusted. The propulsive power of the fleet can be intelligently controlled, and energy consumption is saved.

The invention relates to the technical field of logistics automation, in particular to a full-automatic stacking method and system based on machine vision and path planning, and the method comprises the following steps: based on three-dimensional point cloud data of goods, extracting point cloud coordinates, normal vectors and curvature values of the surface of the goods, calculating the geometric segmentation range of point cloud edge features, and calculating the geometric segmentation range of the point cloud edge features; and calculating a fitting relationship between the boundary size and curvature distribution. According to the method, the surface point cloud coordinates, the normal vector and the curvature value are extracted based on the three-dimensional point cloud data, the accuracy of geometric feature description of the complex cargo surface is enhanced, the geometric center and the variance range are reasonably determined through spatial distribution analysis and feature set classification, the accuracy and stability of shape classification are improved, and the accuracy and stability of shape classification are improved through gravity center and size deviation calculation. The position and pressure distribution of the contact point are optimized, the space priority analysis of the grabbing point and the obstacle point is combined, the path planning and obstacle point elimination strategy is optimized, the path conflict is reduced, and the flexibility and efficiency of logistics operation are improved.

The invention belongs to the field of building surveying and mapping, and particularly discloses a building three-dimensional defect detection method, device and equipment based on multi-sensor fusion, and the method comprises the steps: obtaining data detected by a laser radar, an IMU, a wheel speed meter and image capturing equipment; fusing the data observed by the laser radar, the IMU and the wheel speedometer based on the ESKF, and determining the speed and the pose of the vehicle-mounted acquisition equipment; obtaining a three-dimensional point cloud model under a world coordinate system by combining the speed, the pose and the point cloud data observed by the laser radar; generating a corresponding three-dimensional Gaussian function according to the three-dimensional point cloud model, projecting the three-dimensional Gaussian function in a world coordinate system to a coordinate system of an image capturing device in combination with a pose, and performing microrasterization to obtain a preliminarily rendered image; and constructing a loss function in combination with a visual image observed by an image capturing device, optimizing the three-dimensional Gaussian function, and iterating to obtain a rendered three-dimensional visual model. According to the invention, fusion positioning and high-precision mapping of the building are realized in combination with multiple sensors.

The invention discloses a position deployment and resource allocation method for multi-unmanned aerial vehicle communication. The method comprises the following operation steps: S1, initializing parameters and a model; s2, modeling: modeling for unmanned aerial vehicle position deployment and resource allocation problems; s3, splitting the problem by using a block coordinate descent method, and splitting the mixed integer non-convex problem by using the block coordinate descent method; s4, user association and the three-dimensional position of the unmanned aerial vehicle, wherein the user association and the three-dimensional position of the unmanned aerial vehicle are obtained through an ant lion algorithm; s5, transmitting power of the unmanned aerial vehicle, and optimizing the transmitting power of the unmanned aerial vehicle by using a successive convex approximation technology; and S6, an iterative optimization algorithm is carried out. Under the condition of multi-unmanned aerial vehicle deployment, the transmission rate requirement of the ground users can be met at the same time, the position deployment and resource allocation of the multiple unmanned aerial vehicles are optimized, the transmission rate is maximized, the system throughput can be improved, and the lowest rate requirement of all the ground users can be met.

The invention provides an otoscope image processing system for establishing database model analysis based on deep learning, and relates to the technical field of image processing, the otoscope image processing system comprises an acquisition layer, a processing layer, an extraction layer, a modeling layer and an analysis layer, the processing layer adopts an AI image expansion algorithm to carry out fusion splicing and interference elimination processing on acquired images, and the extraction layer adopts a mixed feature extraction method to extract color, texture and shape features of the images processed by the processing layer and introduce MPEG-7 descriptors to express the features; according to the method, otoscope images of a patient are collected, features and feature values of the images are extracted, a focus global shared image library is constructed through deep learning modeling, the focus global shared image library is compared with the otoscope images of the patient for training, and corresponding focuses are determined, so that different ear diseases can be automatically identified and diagnosed by learning and analyzing a large amount of ear image data, and the diagnosis accuracy is improved. And more accurate and timely diagnosis information is provided for doctors.

The invention provides a rail shuttle vehicle with a leveling structure, relates to the field of rail shuttle vehicles, and solves the problems that in the prior art, leveling can be carried out only by adjusting the lifting position, but when goods are inserted into the upper portion of a rail through a forklift to be placed, due to the difference of manual operation, the labor intensity of workers is lowered, and the labor intensity of the workers is lowered. The problem that when the shuttle vehicle lifts the goods and then transfers the goods, gap difference exists between the left end and the right end of the goods and the guardrails on the left side and the right side is solved, and if the difference is too large, the problem that the goods incline and collide with the guardrails due to the unbalanced gravity center when the shuttle vehicle lifts the goods and then transfers the goods is solved. By means of the design, the weighing structure, the leveling structure, the supporting structure and the like are matched, on the premise that the conveying efficiency is guaranteed, the position of conveyed goods can be optimized as much as possible, and collision between the conveyed goods and a guardrail is avoided.

The invention provides an engineering drawing generation method and device, electronic equipment and a storage medium, and the engineering drawing generation method comprises the steps: importing a drawing template according to the type of a part; placing at least one view of the part in the drawing template according to a view layout rule; the initial position of a mark is determined according to a mark position rule, the mark is created in the drawing template according to the initial position, and the mark is used for marking the characteristics of the part; determining an annotation to be optimized from the annotations; inputting the feature information of the marked features of the to-be-optimized marks into a machine learning model to obtain an optimized position output by the machine learning model; and updating the position of the to-be-optimized label on the drawing template according to the optimized position. According to the scheme, the engineering drawing generation efficiency can be improved.

The invention discloses a large-aperture precision automatic lathe with a Y structure, and relates to the technical field of precision automatic lathes. The device specifically comprises a base, the top of the base is provided with a first sliding rail, a second sliding rail and a third sliding rail, the exterior of the second sliding rail is slidably connected with a material receiving mechanism, the exterior of the third sliding rail is slidably connected with a conveying mechanism, and the top of the base is fixedly connected with a supporting seat; the large-aperture precision automatic lathe with the Y structure further comprises a power tool turret used for adjusting the height and the angle where a tool is located, the power tool turret is slidably connected to the outer portion of the first sliding rail and comprises a first workbench, a first sliding way is formed in the first workbench, a first sliding plate is slidably connected to the interior of the first sliding way, and a second sliding plate is slidably connected to the interior of the first sliding plate. The top of the first sliding plate is fixedly connected with an inclined frame, and the first workbench is slidably connected to the outer portion of the first sliding rail. According to the large-aperture precision automatic lathe with the Y structure, the purpose of improving the use efficiency of equipment is achieved.

The invention relates to the technical field of optical property testing, in particular to a method for measuring and analyzing imaging illumination distribution, which comprises the following steps of: shooting uniform diffuse reflection white screens one by one by using an imaging tester, controlling exposure parameters and focal length to ensure that images are clear, gradually adjusting a shooting angle to cover the whole imaging area, collecting imaging data of each angle to generate a multi-angle imaging data set; comparing the image gray value in the multi-angle imaging data set with a preset gray reflectivity curve, adjusting the gray value matching standard curve pixel by pixel, and calculating the reflectivity for each pixel to obtain a pixel reflectivity matrix. According to the method, the accuracy of illumination effect evaluation is improved, the adaptability and the real-time adjustment capability of a complex illumination system are enhanced, and the practicability and the economical efficiency of illumination design are promoted.

The invention relates to the technical field of power systems, in particular to a two-stage wind storage coordinated planning method and device considering source load uncertainty, and the method comprises the steps: obtaining distributed wind power planning data and distributed energy storage planning data; based on the distributed wind power planning data and the distributed energy storage planning data, establishing a two-stage wind storage coordinated planning scheme considering the source load uncertainty; the two-stage wind storage coordinated planning scheme is input into a target model, the target model outputs respective target access positions and target capacities of the wind power plant and the energy storage equipment, the target model is established based on a target ant lion algorithm, and an adaptive Levy flight mechanism and a golden sine algorithm are introduced into position updating of the target ant lion algorithm. Therefore, the problems of output uncertainty, voltage out-of-limit, power grid loss increase, operation cost increase and the like of the distributed power supply in related technologies are solved.

The invention discloses a wind power prediction method and system based on an improved sparrow algorithm, and relates to the technical field of wind power generation, and the method comprises the steps: collecting and preprocessing the historical operation data of a wind power plant, and constructing a wind power prediction model; the method comprises the following steps: introducing Tent chaotic mapping into a traditional sparrow search algorithm, and introducing adaptive parameters into the Tent chaotic mapping to obtain a preliminary improved sparrow search algorithm; integrating Gaussian mutation operation to obtain a final improved sparrow search algorithm; and using the final improved sparrow search algorithm to optimize the wind power prediction model, and using the optimized wind power prediction model to predict the wind power. According to the invention, through multi-level algorithm improvement and optimization strategies, the problem that a traditional sparrow search algorithm is easy to fall into local optimum is successfully solved; by introducing Tent chaotic mapping and adaptive parameters, the initial population position is optimized, and the global search capability is improved; gaussian mutation operation is integrated, population diversity is maintained, and the capability of jumping out of local optimum is enhanced.

The invention discloses a life history review multi-mode cognitive training method based on generative artificial intelligence. The method comprises the following steps: step 1, determining a cognitive state; step 2, pre-measuring; step 3, performing intervention; 4, intervention feedback and post-test are carried out; 5, comparing effects; 6, iterative optimization is carried out; according to the life history review multi-mode cognitive training method based on the generative artificial intelligence, the artificial intelligence technology is used for assisting intervention, the training effect can be improved, the personalized requirement can be met, the cognitive function of participating old people can be improved by stimulating self-propagated body memory, life integration and completion can be achieved, and the method is suitable for popularization and application. The life quality is improved, time convenience, place convenience and personnel convenience are achieved, selectivity and flexibility of service personnel are expanded, medicine taking and nerve stimulation are not involved, physiological invasiveness is avoided, and worries of intervention objects and family members of the intervention objects on side effects are reduced.

The invention belongs to the technical field of testing devices, and discloses a maintenance testing device for a vacuum valve and a testing method thereof.The maintenance testing device comprises a first vacuum pressure gauge, a second vacuum pressure gauge, a vacuum cavity, a mass flow meter, a control box, a gas pressure adjusting and switching jig and a connector; the first vacuum pressure gauge and the second vacuum pressure gauge are both installed at the top of the vacuum cavity, the switching jig and the connector are installed at one end of the vacuum cavity, the bearing assembly is arranged below the switching jig and the connector, the supporting frame is arranged below the vacuum cavity, and the mass flow meter, the control box and the gas pressure adjusting device are installed in the supporting frame. Through the testing device, off-line valve detection can be carried out, pressure control testing and position control can be conveniently carried out on the valve, the testing efficiency of the valve is improved, the testing device further has the advantage of being small in occupied area, and the testing device can be matched with different jigs to operate valves of different specifications, so that the adaptability of the device is improved.

The invention relates to the technical field of mixed tower hoisting, in particular to auxiliary equipment for hoisting operation of mixed tower duct pieces of a wind generating set, which comprises a fixed seat, two first electric hydraulic cylinders are fixedly connected to the top of one end of the fixed seat, and a mounting seat is fixedly connected to the tops of the two first electric hydraulic cylinders; the hoisting device comprises a mounting base, a hoisting mechanism is arranged at the top of the mounting base, a second electric hydraulic cylinder is fixedly connected to one side of the mounting base, a positioning mechanism is fixedly connected to one end of the second electric hydraulic cylinder, and a safety lock device is arranged on one side of the positioning mechanism. Rotation adjustment is conducted through an electric rotating seat on a mounting fixing seat, so that a hoisting mechanism rotates, and therefore the hoisting operation of the mixed tower duct piece of the wind generating set is facilitated, and through cooperation among a first supporting arm, a second supporting arm and a third supporting arm, the third supporting arm is matched with a third electric telescopic rod when supporting adjustment is conducted; therefore, the position of the electric clamp on the first driving motor can be conveniently adjusted, and the mixed tower duct piece of the wind generating set can be conveniently hoisted.

The utility model discloses an aluminum cover measuring device convenient for positioning, which comprises a bottom frame and a rotating disc, the rotating disc is movably arranged at the center of the top of the bottom frame, left support frames are symmetrically arranged at the top end of the bottom frame on one side of the rotating disc, and sliding arms are arranged at the tops of the left support frames. A connecting frame is mounted on the outer wall of the side, close to the rotating disc, of the sliding arm, a left air cylinder is arranged at the top end of the connecting frame, a right supporting frame is mounted at the top end of the bottom frame on the other side of the rotating disc, and a right air cylinder is mounted at the top of the right supporting frame. According to the utility model, the aluminum caps can be conveniently and continuously conveyed for rotary measurement, conveying and collection, the movement control adjustment can be conveniently and rapidly carried out, the time for switching between the aluminum caps during measurement is shortened, the aluminum caps can be conveniently and better picked and conveyed, and the efficiency of large-batch measurement of the aluminum caps is improved; and the convenience of collecting the measured aluminum caps is improved.

The utility model discloses a compressor and refrigeration equipment. The compressor comprises a shell, a motor assembly, a crankshaft, a spring and a supporting assembly. The crankshaft protrudes upwards to form a matching part; the supporting assembly comprises a motor bearing, and the motor bearing is provided with an assembling hole. The matching part is rotationally arranged in the assembling hole, the upper end face of the matching part is located below the plane where the upper end face of the motor bearing is located, a first oil storage cavity located above the upper end face of the matching part is formed in the assembling hole, and the maximum distance between the upper end face of the matching part and the lower end of the spring is H1 in the direction of the central axis, the minimum distance between the upper end face of the matching part and the upper end face of the motor bearing is H2, and H2 / H1 is larger than or equal to 0.04 and smaller than or equal to 0.5. The first oil storage cavity is defined between the upper end face of the matching part and the upper end face of the motor bearing, the oil blocking effect of the spring is combined, the lubricating performance can be guaranteed, the oil spitting rate can be reduced, and the reliability of the compressor can be improved.

The invention discloses an ardealite-based road base material and a preparation method thereof, and the material comprises the following raw materials by mass: 84-92% of ardealite, 4-8% of magnesium oxide, 1-3% of magnesium chloride, 1-2% of mineral powder, 0.5-1% of cement, 0.25-0.5% of gypsum, 0.25-0.5% of sodium bicarbonate, 0.25-0.5% of a polymer nanocomposite and 0.25-0.5% of a modifier. Wherein the modifier comprises ferrous sulfate and graphene oxide; the polymer nano composite material comprises nano silicon dioxide and an acrylic emulsion. Through the combined effect of the polymer nano composite material and the modifier, based on a series of principles of improving the surface performance of phosphogypsum particles, optimizing the form and aggregation position of the five-phase product, forming a composite water-resisting layer and the like, the cementing efficiency of the five-phase product is improved, and the technical problems of low strength and poor water stability of phosphogypsum are fundamentally solved.

The embodiment of the invention discloses an upper limb exoskeleton robot data glove, a power assisting system and a method. The data glove comprises a pressure acquisition palm which comprises a plurality of thin film pressure sensors, the positions of the thin film pressure sensors are set according to a pressure change contour map of the palm part in the human body carrying process, and the pressure acquisition palm is used for acquiring pressure signals of different parts of the palm; the electrical unit comprises an MCU (Microprogrammed Control Unit) and a wireless radio frequency module; when the wireless radio frequency module does not establish communication with the controller of the robot, the wireless radio frequency module enters a low-power-consumption monitoring state, and the MCU stops receiving the pressure signal; in response to a starting instruction of the controller, the wireless radio frequency module enters a timing sending state, and the MCU sends the pressure signal to the controller through the wireless radio frequency module; the buffering and anti-skidding glove comprises an upper-layer buffering cushion and a lower-layer buffering cushion which cover the two sides of the pressure collecting palm and the two sides of the electric unit.

The utility model relates to the technical field of road engineering material production and processing, in particular to a bagasse fiber shearing device, which is characterized in that a plurality of arc-shaped cutters with single cutting edges are connected onto a main shaft to form a blade group, so that bagasse fibers can be effectively cut, the quality of the bagasse fibers is further improved, the quality fluctuation is reduced, and the service life of the bagasse fibers is prolonged. Meanwhile, the blade set is made of the 3Cr13 stainless steel material, the problem of heating of a cutter in the bagasse fiber machining and producing process is solved, in addition, due to the fact that the blades of the blade set are reasonable in cutting edge angle and thickness, the blade set can be used for machining bagasse fibers, and the machining efficiency of the bagasse fibers is greatly improved. In addition, the position of the motor is optimized, the belt is adopted for transmitting power, the problem that water enters the motor in the bagasse fiber preparation process is solved, the service life of the device is prolonged, and the safety of the device is improved.

The invention relates to the field of unmanned aerial vehicle coverage control and image quality optimization, and discloses an image quality optimization control method for covering an aerial photography area by a multi-unmanned aerial vehicle system, which comprises the following steps: S1, establishing an image quality function based on pixel density and camera view angle, the description module is used for describing the coverage effect of the multi-unmanned-aerial-vehicle system in the convex polygon area; s2, task area division: dividing the task area of each unmanned aerial vehicle by adopting an extended Voronoi segmentation method; and S3, designing a distributed controller, and realizing local optimal deployment of the unmanned aerial vehicle based on the designed distributed controller. A new image quality function is introduced, and the coverage control of the multi-unmanned aerial vehicle system is optimized by combining the pixel density and the lens distortion, so that the defect that the characteristics of an optical camera are not fully considered in the prior art is overcome, and the optimal deployment of the unmanned aerial vehicle is realized. And the quality of the aerial image and the complete coverage of the target area are obviously improved.

The utility model relates to the technical field of dehumidifiers, in particular to a vertical window type dehumidifier which comprises an indoor shell and an outdoor shell, the indoor shell is arranged on the indoor side, the outdoor shell is arranged on the outdoor side, an air inlet and an air outlet are formed in the indoor shell, the air inlet is formed in the side edge of the indoor shell, and the air outlet is formed in the top of the indoor shell. An air inlet is formed in the indoor shell, an evaporator, a condenser and a wind wheel assembly are arranged in the indoor shell, the evaporator is arranged on one side of the air inlet, the evaporator and the condenser are oppositely arranged, the wind wheel assembly comprises a volute, a cross-flow wind wheel and a motor, the motor and the cross-flow wind wheel are both arranged in the volute, the motor drives the cross-flow wind wheel to rotate, and a compressor and an electric control box are arranged in the indoor shell. According to the vertical window type dehumidifier, the air outlet is formed in the top of the indoor shell, so that the range of the air outlet of the dehumidifier is enlarged, airflow is prevented from directly blowing a human body, and the airflow circulation effect of the air outlet is improved.

The invention discloses a coating preparation and a preparation method thereof. The coating preparation comprises a quick-release layer, a slow-release layer and a coating material, wherein the quick-release layer and the slow-release layer are coated with the coating material; the coating preparation is prepared by the following steps: S1, preparing the quick release layer; s2, preparing a sustained-release layer; s3, preparing a coating material; and S4, preparing the coating preparation. The coating preparation provided by the invention can improve the position and speed of drug release, increase the stability of the drug, prevent the compatibility change of the drug, control the position of drug release, cover the bitter taste and bad smell of the drug, and improve the appearance of the drug. According to the method for preparing the coating preparation, the problems of migration of active pharmaceutical ingredients in the tabletting process, breakage of a coating film and crushing of the medicine in the transportation and storage processes can be avoided, the stability of the active pharmaceutical ingredients is further guaranteed, the production efficiency of the medicine can be improved, the product quality is guaranteed, and the production cost is reduced. The production cost is reduced; meanwhile, the environment-friendly requirement is met.

The invention provides a high-precision numerical control machine tool linear motor direct drive type heat dissipation device, a heat dissipation plate comprises a shell and a plurality of air passing units, a series of round hole sleeves are arranged on the front end face and the rear end face of the shell side by side, a shaft sleeve positioning frame is fixed in the inner wall of each pair of round hole sleeves, and sealing covers are fixed at the two ends of a core tube of each air passing unit; a rotary sleeve ring groove and a magnetic ring groove are formed in the two ends of the core pipe respectively, the rotary sleeve ring groove is sleeved with the shaft sleeve positioning frame, a fixed magnetic ring is sleeved with the magnetic ring groove, a sealing outer pipe is fixed to the middle section of the core pipe in a sealed mode to form an annular sealing cavity, and the annular sealing cavity is filled with phase change materials in a sealed mode. A circulating cavity defined by the shell and the core pipe is filled with fluid heat-conducting media, and overturning magnets consistent in magnetic direction are installed on the inner sides of the linear guide rails respectively. According to the device, the characteristics of airflow cooling, phase change heat absorption and movement overturning are comprehensively utilized, so that heat management of the machine tool under the high-speed and high-precision working condition is more effective and accurate.

The utility model relates to the technical field of welding tools, in particular to an automobile seat part welding tool. Comprising a bottom plate, a positioning column and an auxiliary mechanism, the auxiliary mechanism comprises a supporting plate, a linear guide rail, an abutting frame, a transmission lead screw, a servo motor and a clamping device, during machining, the clamping device and the abutting frame are matched to clamp a workpiece, meanwhile, the action stroke of the clamping device can be automatically adjusted, then the servo motor acts to drive the transmission lead screw to rotate, and under cooperation of the linear guide rail, the workpiece is clamped. According to the automobile seat part welding device, the abutting frame and the clamping device can vertically move, height position adjustment is carried out, and therefore when automobile seat parts are welded, position adjustment can be conveniently carried out, and welding machining of automobile seats of different specifications is facilitated.

The polishing equipment comprises a working table, two strip-shaped through grooves are formed in the surface of the working table, two concentric-square-shaped fixing plates are connected to the inner walls of the strip-shaped through grooves in a sliding mode, and limiting grooves are formed in the surface of the working table in a bilateral symmetry mode; a square sliding block is slidably connected to the inner wall of the limiting groove through a first adjusting mechanism, a supporting frame is fixedly connected to the surface of the square sliding block, a T-shaped block is slidably connected to the surface of the supporting frame through a second adjusting mechanism, and a polishing assembly is fixedly connected to the lower end of the T-shaped block. By arranging a first adjusting mechanism, the position of a square sliding block in a limiting groove can be conveniently adjusted, so that the position of a supporting frame can be adjusted, by arranging a second adjusting mechanism, the position of a T-shaped block can be conveniently adjusted, so that the position of a polishing assembly can be adjusted, and through mutual cooperation of the first adjusting mechanism and the second adjusting mechanism, the polishing efficiency is improved. And convenience is provided for polishing and renovating different positions or part of the surface of the metal plate.

The utility model relates to the technical field of vertical lathes, and discloses a numerical control vertical lathe which comprises a box body, a clamping assembly is arranged on the upper portion of the box body, a water tank is formed in the box body, a first water pipe is fixedly connected in the box body, a first motor is fixedly connected to the upper side in the box body, and a wheel disc is fixedly connected to the driving end of the first motor. A water pump is fixedly connected into the water tank, the top of the water pump is fixedly connected to the lower end of the first water pipe, a C-shaped pipe is fixedly connected to the top of the box body, and connecting pipes are fixedly connected to the peripheries of the front end and the rear end of the right side of the C-shaped pipe. According to the cleaning device, through cooperation of the first water pipe, the C-shaped pipe, the spray head, the connecting pipe, the second water pipe, the first motor, the water pump, the screen box and the water tank, collection of chippings and filtering and recycling of cleaning water are completed. And through cooperation of the clamp, the spiral disc, the second motor, the worm gear, the worm and the rotating rod, a machined workpiece can be clamped.

The invention relates to an electric appliance fault simulation test bench for a pure electric bus, and the test bench integrates all subsystems of the pure electric bus through a rack system. Comprising a test bed assembly, a power battery system, a high-voltage power supply system, a cockpit control system, a power driving system, a braking system, a steering system, a light signal system, an air conditioning system, a cooling system, a low-voltage power distribution system, a BMS battery management system, an OBD automobile fault diagnosis system, an LPDS fault injection module, a remote monitoring system and a whole automobile control system. All high and low voltage wire harnesses and communication wire harnesses are connected according to the use state of the whole vehicle, high voltage electricity is supplied to the rack system through external three-phase electricity transformation processing, 24V low voltage electricity is supplied through a storage battery, and the rack system completely simulates the low-speed state operation of the whole vehicle. According to the invention, rapid reproduction and solution simulation verification of various faults can be realized, dependence on manpower and material resources such as vehicles, sites and drivers is reduced, efficiency is improved, and cost is reduced.

The invention discloses an electronic expansion valve and an air conditioning system, and relates to the technical field of electronic expansion valves.The electronic expansion valve comprises a first valve needle and a valve port assembly, the valve port assembly comprises a connecting base, a valve port ring and a pressing sleeve, the connecting base comprises a limiting part, a connecting part located below the limiting part and a hollow inner cavity, and the valve port ring is arranged in the inner cavity; the valve port ring is arranged in the inner cavity and abuts against the limiting part, the pressing sleeve is connected with the connecting part, the valve port ring and the limiting part axially press the valve port ring, the valve port ring is provided with a valve port communicated with the inner cavity, the first valve needle is movably arranged on the connecting base, and the second valve needle is movably arranged on the connecting base. And a flow path through which the connecting seat is communicated with the valve port is opened and closed. The technical scheme provided by the invention aims to solve the problems of separation and internal leakage of the sealing ring caused by insufficient limiting of the sealing ring by a valve port piece under the condition of a large-diameter valve port of the electronic expansion valve.

The invention discloses a manual semen collection device for sheep semen collection and a semen collection method of the manual semen collection device, and particularly relates to the technical field of sheep semen collection. The manual semen collection device comprises an operation table, two symmetrically-distributed surrounding plates are fixedly connected to the middle of the front side of the upper end of the operation table, and three handrails are fixedly connected to the left side and the right side of the middle of the upper end of the operation table in a linear array; the upper ends of the six handrails are jointly and fixedly connected with a blocking shed, a sperm taking device is fixedly installed in the middle of the rear side of the upper end of the operation table, and leg placing assemblies are fixedly installed at the rear ends of the two handrails located on the rear side. According to the manual semen collection device for sheep semen collection and the semen collection method of the manual semen collection device, semen collection work is facilitated through the arranged semen collection device, the semen collection state and the semen storage state can be switched, during semen collection, one end of the semen collection device can be aligned to the vagina position of an ewe, and the other end of the semen collection device corresponds to the penis position of a ram; and the mating position of the ram and the ewe can be simulated conveniently, so that the subsequent sperm collection efficiency is improved.